Abstract

The present disclosure provides method of monitoring a plurality of processes in an urban water cycle. The method comprises the steps of: defining an event having impact on a process activity of at least one process, defining a time-period, defining a first data set representing at least one expected process activity under impact of the event, the first data set comprising interrelated values of expected process activity and point in time in the time-period, determining a second data set representing actual process activity in the time-period, the actual process activity being the process activity under impact of the event, comparing the second data set representing actual process activity with the first data set representing expected process activity. Based thereon, a notification relating to the process activity for the at least one process is generated, if a deviation between the first data set and the second data set exceeds a predetermined threshold value in the time-period.

IPC Classes  ?

• C02F 1/00 - Treatment of water, waste water, or sewage
• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
• C02F 3/12 - Activated sludge processes
• C02F 11/147 - Treatment of sludgeDevices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
• C02F 101/10 - Inorganic compounds
• C02F 101/16 - Nitrogen compounds, e.g. ammonia
• G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators

Abstract

A rotary disc filter is provided with a guided, high pressure media cleaning system that includes an elongated shaft that extends along one side of a series of filter discs or extends along a portion of one side of the disc filter. The lance guide is configured to receive and support a lance having a series of nozzles. In the course of a high pressure media cleaning operation, the lance and lance guide moves along the shaft from one cleaning position to another. In each cleaning position, the lance projects from the lance guide into an open space adjacent filter media on the filter discs. High pressure cleaning solution is dispersed from the nozzles of the lance onto the filter media while the filter discs are rotated.

IPC Classes  ?

• B01D 33/21 - Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with hollow filtering discs transversely mounted on a hollow rotary shaft
• B01D 33/46 - Regenerating the filter material in the filter by scrapers, brushes or the like acting on the cake-side of the filtering element
• B01D 33/80 - Accessories

Abstract

The invention relates to a sludge dewatering facility and to a sludge dewatering method using such a facility, the facility comprising a sludge dewatering device (20) and at least one suction line (500, 60), wherein the first and second plates (21a, 21b) of the sludge dewatering device (20) define a chamber configured to accept a sludge to be dehydrated (B), wherein first and second electrodes are configured to set up an electric field within the chamber, wherein the chamber is provided with at least one discharge port configured to discharge a filtrate (Fa, Fb), wherein the chamber is provided with at least one suction port connected to the at least one suction line (50, 60), and wherein the at least one suction line (50, 60) comprises at least one pump (59) and at least one gas treatment unit (52, 62).

IPC Classes  ?

• C02F 11/15 - Treatment of sludgeDevices therefor by de-watering, drying or thickening by treatment with electric, magnetic or electromagnetic fieldsTreatment of sludgeDevices therefor by de-watering, drying or thickening by treatment with ultrasonic waves
• C02F 11/00 - Treatment of sludgeDevices therefor
• C02F 11/122 - Treatment of sludgeDevices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
• B01D 25/164 - Chamber-plate presses, i.e. the sides of the filtering elements being clamped between two successive filtering plates
• B01D 25/28 - Leaching or washing filter cakes in the filter
• B01D 25/30 - Feeding devices
• B01D 35/06 - Filters making use of electricity or magnetism
• B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
• B01D 53/18 - Absorbing unitsLiquid distributors therefor
• B01D 53/52 - Hydrogen sulfide
• B01D 53/58 - Ammonia
• B01D 53/68 - Halogens or halogen compounds
• B01J 19/30 - Loose or shaped packing elements, e.g. Raschig rings or Berl saddles, for pouring into the apparatus for mass or heat transfer

Abstract

The invention relates to a biofilm support element for a biological wastewater treatment plant, the support element consisting of a lignocellulosic plant compound having irregularities and/or grooves, or a portion of such a compound, this compound or this portion of compound having been previously washed, dried and treated in order to be waterproofed and to have sufficient density to be maintained in suspension and in motion in the water. The invention also relates to a method for treating a lignocellulosic plant compound having irregularities and/or grooves, or a portion of such a compound, in order to obtain a support element as previously defined, the method comprising the following steps: - a washing step; - a heat treatment step, leading to weight loss of 10% to 30%; - a step of impregnation with at least one waterproofing compound; and - a drying step, the heat treatment step being able to be carried out before or simultaneously with the waterproofing step.

IPC Classes  ?

• C02F 3/10 - PackingsFillingsGrids
• C02F 3/00 - Biological treatment of water, waste water, or sewage
• C02F 3/08 - Aerobic processes using moving contact bodies

Abstract

The invention pertains to a bio-carrier to carry a biofilm in a moving bed biofilm reactor (MBBR), the carrier being a particle comprising dehydrated sludge. The use of a bio-carrier in a MBBR process to purify a liquid from contaminants is disclosed and a method of manufacture of a bio-carrier is provided.

IPC Classes  ?

• C02F 3/10 - PackingsFillingsGrids
• C02F 1/24 - Treatment of water, waste water, or sewage by flotation
• C02F 3/08 - Aerobic processes using moving contact bodies
• C02F 3/12 - Activated sludge processes
• C02F 11/12 - Treatment of sludgeDevices therefor by de-watering, drying or thickening
• C02F 11/122 - Treatment of sludgeDevices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
• C02F 11/127 - Treatment of sludgeDevices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
• C02F 11/13 - Treatment of sludgeDevices therefor by de-watering, drying or thickening by heating
• C02F 11/14 - Treatment of sludgeDevices therefor by de-watering, drying or thickening with addition of chemical agents
• C02F 11/143 - Treatment of sludgeDevices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
• C02F 11/147 - Treatment of sludgeDevices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances

Abstract

The invention relates to a facility for the treatment of a fluid, comprising a reactor (1) that accommodates a bed of adsorbent media particles, means (2) for injecting and distributing fluid to be treated, which means are in the bottom part of said reactor (1) and are intended to form an ascending flow of fluid within said reactor (1) and allow said bed of adsorbent media particles to be fluidised and expanded, and means (3) for recovering the fluid that has passed within said bed of adsorbent media particles fluidised in this way, characterised in that said reactor (1) is a closed reactor that forms an enclosure making it possible to implement said treatment under pressure, said enclosure having a bottom (11) that accommodates said means (2) for injecting and distributing the fluid to be treated, a substantially cylindrical central body (12) forming a fluidisation column, a substantially cylindrical peripheral body (14) defining an annular chamber (15) around said substantially cylindrical central body (12) delimiting a fluidisation column, said annular chamber (15) accommodating at least one layer of a granular or pulverulent material, a curved cover (13) forming a baffle making it possible to transform said ascending flow into a homogeneous descending flow and to direct said descending flow towards said recovery means (3) via said annular chamber (15).

IPC Classes  ?

• C02F 1/28 - Treatment of water, waste water, or sewage by sorption

Abstract

Method for treating water for the purpose of reducing the content of organic matter, of micropollutants and of pathogenic agents therein, comprising the supplying of water to be treated directly into a membrane reactor containing at least one filtration membrane and an adsorbent material, stirring the mixture of water and adsorbent, and extracting treated water, characterised in that the adsorbent material consists of micrograins of activated carbon having a real density of at least 0.45, a settling velocity of 30 to 50 m/H, a specific surface area of 400 to 2500 m2/g, and an average particle size of between 600 and 1300 μm, less than 5% by volume of said grains having a size of less than 400 μm, in that the concentration of said activated carbon micrograins in said membrane reactor is maintained between 5 and 100 g/L, and in that no other granular or particulate material other than the activated carbon micrograins is used in said reactor, the stirring of said mixture of water and activated carbon micrograins in the membrane reactor being at least partially carried out by air injection into said mixture at a rate of 30 to 60 Nm3/m2·H and being sufficiently vigorous to avoid the deposit of activated carbon micrograins on said at least one filtration membrane

IPC Classes  ?

• C02F 9/00 - Multistage treatment of water, waste water or sewage
• B01D 61/04 - Feed pretreatment
• B01D 61/16 - Feed pretreatment
• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• B01J 20/34 - Regenerating or reactivating
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• C02F 1/78 - Treatment of water, waste water, or sewage by oxidation with ozone
• C02F 101/30 - Organic compounds
• C02F 103/34 - Nature of the water, waste water, sewage or sludge to be treated from the chemical industry not provided for in groups

Abstract

A process for removing selenium from water is described. Through a biological reduction process, selenium +6 species are reduced to selenium +4 species. A coagulant is mixed with the water and as a result, solids having complexation binding sites are formed. The reduced selenium +4 species is adsorbed onto the complexation binding sites of the solids. Thereafter, the solids having adsorbed selenium +4 species is separated from the water and ultimately separate from the process. The resulting effluent is subjected to a second biological treatment under aerobic conditions which converts residual selenium and organo-selenium to selenate.

IPC Classes  ?

• C02F 9/00 - Multistage treatment of water, waste water or sewage
• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
• C02F 3/30 - Aerobic and anaerobic processes
• C02F 101/10 - Inorganic compounds
• C02F 101/30 - Organic compounds

Abstract

The present invention relates to a process for reducing hardness and organic matter concentrations in water. The water being treated is directed into and through an upflow reactor containing a media. As the water moves up the reactor, the media is fluidized. At least one softening reagent is added to the water in the reactor, resulting in an increase in pH and the precipitation of hardness. The precipitated hardness compounds are attached on the media. To enhance the reduction of organic matter in the water, a coagulant is mixed with the water upstream of the softening reactor. As the water flows upwardly through the reactor, the coagulant reacts with organic particles in the water, causing the organic particles to bind and form floc. Downstream of the reactor, the water is subjected to a filtration process that removes the floc containing the organic matter.

IPC Classes  ?

• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
• C02F 5/06 - Softening water by precipitation of the hardness using calcium compounds
• C02F 101/20 - Heavy metals or heavy metal compounds
• C02F 101/30 - Organic compounds

Abstract

A rotary disc filter designed to remove suspended solids from wastewater is provided with a high pressure media cleaning system. The high pressure media cleaning system comprises a sectioned manifold that extends along the side of an array of disc-shaped filter units. The sectioned manifold includes a plurality of hydraulic sections with each hydraulic section isolated from the other hydraulic section or sections. Communicatively connected to each hydraulic section is a plurality of spray bars that include nozzles. The spray bars communicatively connected to a particular hydraulic section is designated to clean only a section of the filter units at any one time. Pressurized water is supplied to one hydraulic section at a time. The pressurized water enters the hydraulic section and from the hydraulic section flows through the respective spray bars communicatively connected thereto and out the nozzles of the spray bars and in the process cleans filter media that form a part of the filter unit of a particular filter unit section.

IPC Classes  ?

• B01D 33/46 - Regenerating the filter material in the filter by scrapers, brushes or the like acting on the cake-side of the filtering element
• B01D 33/50 - Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
• B01D 33/21 - Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with hollow filtering discs transversely mounted on a hollow rotary shaft
• B01D 33/80 - Accessories

Abstract

11111iAiA2Ai11ii0i0') characterising the state of the membranes for filtering a volume of liquid.

IPC Classes  ?

• G06Q 10/20 - Administration of product repair or maintenance
• B01D 61/12 - Controlling or regulating
• B01D 65/02 - Membrane cleaning or sterilisation
• B01D 65/10 - Testing of membranes or membrane apparatusDetecting or repairing leaks
• C02F 1/00 - Treatment of water, waste water, or sewage
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• G06Q 50/06 - Energy or water supply

Abstract

The present invention relates to a biological filtration process for water loaded with nitrogenous pollutants in order to reduce the global nitrogen content of said water, characterised in that it comprises a first step of nitritation and filtration carried out in a first aerated biological reactor, a second step of deammonification, denitrification and filtration carried out in a second non-aerated biological reactor, and a step of evaluation of the ratio of the nitrite content to the ammoniacal nitrogen content of the water at the outlet of the first reactor. When this ratio is greater than a predetermined stoichiometry value, the process according to the invention comprises a step of addition of water to be treated to the water originating from the first reactor so as to obtain, at the inlet of the second reactor, a mixture having a ratio of the nitrite content to the ammoniacal nitrogen content that is close to the stoichiometric ratio of the Anammox reaction.

IPC Classes  ?

• C02F 3/30 - Aerobic and anaerobic processes
• C02F 3/00 - Biological treatment of water, waste water, or sewage
• C02F 3/08 - Aerobic processes using moving contact bodies
• C02F 3/10 - PackingsFillingsGrids
• C02F 3/34 - Biological treatment of water, waste water, or sewage characterised by the microorganisms used

Abstract

The invention pertains to a water filter unit with an integrated lifting system, comprising a water filter, at least two lifting pillars, at least two sleeves and a slide connector wherein the sleeves are attached at the corners of the water filter, the length axis of the sleeves being perpendicular to the mounting surface of the water filter, the lifting pillars are arranged to fit inside the sleeves, wherein the length axis of the lifting pillars coincide with the length axis of the sleeves, such that the sleeves may slide along the lifting pillars, thereby forming at least two lifting pillar and sleeve pairs, wherein the at least two pairs are connected to at least one lifting aid for lifting the water filter unit from an operative position to a raised position, and the slide connector comprises a filter side connector connected to the water filter unit arranged for connection to an external source thereby forming a fluid connection between the water filter unit and the external source when the water filter unit is lowered into the operative position. Furthermore, the invention discloses a lifting system for a water filter unit.

IPC Classes  ?

• B01D 33/80 - Accessories
• B01D 33/06 - Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
• B01D 33/21 - Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with hollow filtering discs transversely mounted on a hollow rotary shaft

Abstract

The invention relates to a water treatment method comprising a step of injecting ozone by a Venturi effect into the water to be treated, immediately followed by a step of ozone saturation of the water to be treated, a step of bringing the ozonated water to be treated into a reactor comprising a fluidised bed of activated carbon particles, a step of placing the ozonated water to be treated in contact with the activated carbon particles according to a flow of water ascending in the reactor, a step of discharging the water treated in this way. The invention also relates to a facility comprising an activated carbon reactor, means for bringing the water to be treated into the reactor, means for discharging the treated water, a means for injecting ozone into the water by a Venturi effect and a means for saturating the water with ozone mounted directly, or as a bypass, on the means for bringing water into the reactor.

IPC Classes  ?

• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 1/20 - Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
• C02F 1/78 - Treatment of water, waste water, or sewage by oxidation with ozone

Abstract

The invention relates to a method for treating dirty overflow water in order to separate suspended matter and insoluble granular material that is heavier than water. This method involves a degassing step (1), two steps of liquid-solid separation within a hydrocyclone (4) and a recirculation cylinder (5), and a step of recirculating the water to be treated, carried out by a hydroejector (3).

IPC Classes  ?

• B01D 21/26 - Separation of sediment aided by centrifugal force
• B04C 3/00 - Apparatus in which the axial direction of the vortex remains unchanged
• C02F 1/00 - Treatment of water, waste water, or sewage
• C02F 1/38 - Treatment of water, waste water, or sewage by centrifugal separation
• G05D 11/00 - Control of flow ratio
• C02F 1/56 - Macromolecular compounds

IPC Classes  ?

• B01D 24/12 - Downward filtration, the filtering material being supported by pervious surfaces
• B01D 24/46 - Regenerating the filtering material in the filter

Abstract

System and process for cleaning media in a vessel includes directing a cleaning liquid into the vessel. A fluidizing pump draws the cleaning liquid from the vessel and returns a portion of the cleaning liquid to a fluidizing nozzle that is directed downwardly into the vessel. The fluidizing nozzle discharges the cleaning liquid in a jet stream that contacts the media causing the media to move upwardly in the vessel and become fluidized. The media is continuously fluidized and agitated for a time. In the process, contaminants associated with the media are separated and become contained in the cleaning liquid. During this process, most of the media is confined while within the vessel.

IPC Classes  ?

• B01D 36/00 - Filter circuits or combinations of filters with other separating devices
• B01D 24/12 - Downward filtration, the filtering material being supported by pervious surfaces
• B01D 24/46 - Regenerating the filtering material in the filter

Abstract

The present invention is a semi-batch, multi-phase reverse osmosis process for treating water containing silica which aims to achieve recovery rates of 90% and higher without requiring chemical intensive pretreatment.

IPC Classes  ?

• B01D 61/02 - Reverse osmosisHyperfiltration
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• C02F 101/10 - Inorganic compounds

Abstract

A carrier to carry a biofilm in a moving bed biofilm reactor (MBBR) having has improved stability against environmental stresses. The carrier comprises a carrier material, wherein the carrier material comprises at least one high density polyethylene having a bimodal molecular weight distribution, whereby the carrier material has a bimodal or a multimodal molecular weight distribution. Also provided is use of the carrier in a moving bed biofilm reactor (MBBR) process.

IPC Classes  ?

• C02F 3/08 - Aerobic processes using moving contact bodies
• C02F 3/10 - PackingsFillingsGrids

Abstract

A method and apparatus for a Coanda effect-induced tube settler assembly lamellae cleaning system for raw water or semi-potable drinking water treatment clarifier. A tangential compressed air source is injected from compressed air tubes near J-shaped support deflector beams. The combined high pressure air from a high pressure fixed air grid and waste water fluid flow stream in a main waste water stream to be clarified, creates a Coanda-effect fluid inducing turbulence when used in conjunction with cross-sectionally J-shaped deflector beams. This combined fluid flowstream provides hydrodynamic cleaning pressure axially through the tubes' lumen of the tube settler assembly within a clarifier cell basin enclosure.

IPC Classes  ?

• B08B 5/02 - Cleaning by the force of jets, e.g. blowing-out cavities

Goods & Services

Wastewater treatment apparatus and installations using a suspended biofilm implanted on biosourced substrates; biological reactors for treatment of wastewater using a suspended biofilm implanted on biosourced substrates; all these goods enabling the implementation of a sustainable wastewater treatment technology in that this technology fosters the use of renewable resources; none of the aforesaid goods concerning beverage dispensers and their parts nor tap water filters. Wastewater treatment services via a process using a suspended biofilm implanted on biosourced substrates, these services enabling the implementation of a sustainable wastewater treatment technology in that this technology fosters the use of renewable resources; none of the aforesaid services concerning beverage dispensers and their parts nor tap water filters.

Goods & Services

Nutshell filters used in industrial wastewater treatment installations for removing oil from industrial wastewater.

Abstract

The present disclosure provides method of monitoring a plurality of processes in an urban water cycle. The method comprises the steps of: defining an event having impact on a process activity of at least one process, defining a time-period, defining a first data set representing at least one expected process activity under impact of the event, the first data set comprising interrelated values of expected process activity and point in time in the time-period, determining a second data set representing actual process activity in the time-period, the actual process activity being the process activity under impact of the event, comparing the second data set representing actual process activity with the first data set representing expected process activity. Based thereon, a notification relating to the process activity for the at least one process is generated, if a deviation between the first data set and the second data set exceeds a predetermined threshold value in the time-period.

IPC Classes  ?

• G05B 23/02 - Electric testing or monitoring

Abstract

The present disclosure provides a method of regenerating an adsorptive medium comprising granules. The method comprises the steps of: adding, in a first step, at least one of dissolved ferrous iron and manganese(II) ions to an aqueous medium comprising the adsorptive medium, and adding, in a second step after expiry of the first step, an oxidant to the adsorptive medium. The first step and the second step are repeated as alternating steps.

IPC Classes  ?

• B01J 20/34 - Regenerating or reactivating
• B01J 20/04 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
• B01J 20/08 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group comprising aluminium oxide or hydroxideSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group comprising bauxite
• B01J 20/06 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption

Abstract

The present disclosure provides method of monitoring a plurality of processes in an urban water cycle. The method comprises the steps of: defining an event having impact on a process activity of at least one process, defining a time-period, defining a first data set representing at least one expected process activity under impact of the event, the first data set comprising interrelated values of expected process activity and point in time in the time-period, determining a second data set representing actual process activity in the time-period, the actual process activity being the process activity under impact of the event, comparing the second data set representing actual process activity with the first data set representing expected process activity. Based thereon, a notification relating to the process activity for the at least one process is generated, if a deviation between the first data set and the second data set exceeds a predetermined threshold value in the time-period.

IPC Classes  ?

• G05B 23/02 - Electric testing or monitoring

Goods & Services

Wastewater treatment services via a process using a suspended biofilm implanted on biosourced substrates, these services enabling the implementation of a sustainable wastewater treatment technology in that this technology fosters the use of renewable resources; none of the aforesaid services concerning beverage dispensers and their parts nor tap water filters Wastewater treatment apparatus and installations using a suspended biofilm implanted on biosourced substrates; biological reactors for treatment of wastewater using a suspended biofilm implanted on biosourced substrates; all these goods enabling the implementation of a sustainable wastewater treatment technology in that this technology fosters the use of renewable resources; none of the aforesaid goods concerning beverage dispensers and their parts nor tap water filters

Abstract

The present invention relates to a system or process for anaerobically treating wastewater. The system employs a pre-treatment unit that includes an MBBR having biomass supported on biofilm carriers. The biomass hydrolyzes or leads to a level of hydrolysis of particulate matter and acidifies the wastewater. In the process, the biomass yields relatively high acid production rates while employing a relatively short hydraulic retention time.

IPC Classes  ?

• C02F 3/28 - Anaerobic digestion processes

Abstract

The invention relates to a facility for the treatment of a fluid, comprising a reactor (1) that accommodates a bed of adsorbent media particles, means (2) for injecting and distributing fluid to be treated, which means are in the bottom part of said reactor (1) and are intended to form an ascending flow of fluid within said reactor (1) and allow said bed of adsorbent media particles to be fluidised and expanded, and means (3) for recovering the fluid that has passed within said bed of adsorbent media particles fluidised in this way, characterised in that said reactor (1) is a closed reactor that forms an enclosure making it possible to implement said treatment under pressure, said enclosure having a bottom (11) that accommodates said means (2) for injecting and distributing the fluid to be treated, a substantially cylindrical central body (12) forming a fluidisation column, a substantially cylindrical peripheral body (14) defining an annular chamber (15) around said substantially cylindrical central body (12) delimiting a fluidisation column, said annular chamber (15) accommodating at least one layer of a granular or pulverulent material, a curved cover (13) forming a baffle making it possible to transform said ascending flow into a homogeneous descending flow and to direct said descending flow towards said recovery means (3) via said annular chamber (15).

IPC Classes  ?

• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• B01D 24/36 - Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed fluidised during the filtration

Abstract

The invention relates to a facility for the treatment of a fluid, comprising a reactor (1) that accommodates a bed of adsorbent media particles, means (2) for injecting and distributing fluid to be treated, which means are in the bottom part of said reactor (1) and are intended to form an ascending flow of fluid within said reactor (1) and allow said bed of adsorbent media particles to be fluidised and expanded, and means (3) for recovering the fluid that has passed within said bed of adsorbent media particles fluidised in this way, characterised in that said reactor (1) is a closed reactor that forms an enclosure making it possible to implement said treatment under pressure, said enclosure having a bottom (11) that accommodates said means (2) for injecting and distributing the fluid to be treated, a substantially cylindrical central body (12) forming a fluidisation column, a substantially cylindrical peripheral body (14) defining an annular chamber (15) around said substantially cylindrical central body (12) delimiting a fluidisation column, said annular chamber (15) accommodating at least one layer of a granular or pulverulent material, a curved cover (13) forming a baffle making it possible to transform said ascending flow into a homogeneous descending flow and to direct said descending flow towards said recovery means (3) via said annular chamber (15).

IPC Classes  ?

• B01D 24/36 - Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed fluidised during the filtration
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption

Abstract

A modular water and/or sludge treatment system, wherein the modules comprise a floor module PM comprising an upper surface S capable of receiving items of equipment, an inner housing E provided under the upper surface capable of receiving at least one other item of equipment and a connecting zone Z provided with fluid or electrical connection means. The upper surface S of the floor is partially or completely removable to allow temporary access to the housing E provided under the upper surface S.

IPC Classes  ?

• C02F 9/00 - Multistage treatment of water, waste water or sewage

Abstract

A method for treating an aqueous fluid comprising a biodegradable organic substance in an installation comprising an upflow bioreactor containing a sludge bed, said sludge bed comprising biomass, an external separator, and a conditioning tank, the method comprising: treating the fluid in the conditioning tank; feeding the treated fluid into a lower part of the bioreactor and forming biogas; withdrawing the fluid from an upper part of the bioreactor, which withdrawn fluid comprises biomass; feeding the aqueous fluid withdrawn from the upper part of the bioreactor into the external separator wherein the aqueous fluid comprising the biomass is separated into a liquid phase, and a fluid phase enriched in biomass; returning said fluid phase enriched in biomass from the external separator to the bioreactor; and returning a part of said liquid phase to the conditioning tank.

IPC Classes  ?

• C02F 3/28 - Anaerobic digestion processes
• C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
• C12M 1/107 - Apparatus for enzymology or microbiology with means for collecting fermentation gases, e.g. methane
• C12M 1/00 - Apparatus for enzymology or microbiology

Goods & Services

Units for water clarification by flotation, namely, clarification and concentration machines for use in treatment of liquids in the nature of water, waste water and industrial water; fixed and movable apparatus, devices and installations for distributing, treating, purifying, and filtering water and waste water namely, water and waste water treatment, purification, and filtration apparatus; fixed and movable apparatus, devices and installations for the treatment and purification of water using clarification, flotation, flocculation and decantation; fixed and movable apparatus, devices and installations for purifying water, waste water, urban waste and industrial process water

Abstract

A process for treating an aqueous fluid comprising a biodegradable organic substance the process comprising a bioreactor unit batch feeding stage, wherein the aqueous fluid that is to be treated is fed into a bioreactor unit; a batch reaction stage, wherein the aqueous fluid is microbiologically treated and biogas is produced in the bioreactor unit; a degassing unit feeding stage, wherein an aqueous suspension comprising microbiologically treated aqueous fluid and biomass is withdrawn from the bioreactor unit and fed batch-wise into a degassing unit; and a semi-continuous biomass separator unit feeding stage, wherein the degassed aqueous suspension is withdrawn from the batch degassing unit and fed into a biomass separator.

IPC Classes  ?

• C02F 1/20 - Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
• C02F 11/04 - Anaerobic treatmentProduction of methane by such processes
• C02F 11/12 - Treatment of sludgeDevices therefor by de-watering, drying or thickening
• C02F 3/28 - Anaerobic digestion processes
• C02F 9/00 - Multistage treatment of water, waste water or sewage

Goods & Services

Parts of water or waste water treatment plants, namely, media on which microorganisms develop for the purpose of removing polyatomic chemical elements, these media being used in biological reactors; water or waste water treatment plants, namely, water filtration and purification systems for removing non-metal polyatomic chemical elements; biological reactors for the treatment of water or waste water through processes using media on which microorganisms develop for the purpose of removing non-metal polyatomic chemical elements. Treatment of water or waste water by biological reactors featuring media on which microorganisms develop for the purpose of removing non-metal polyatomic chemical elements.

Abstract

A process for removing selenium from water is described. Through a biological reduction process, selenium +6 species are reduced to selenium +4 species. A coagulant is mixed with the water and as a result, solids having complexation binding sites are formed. The reduced selenium +4 species is adsorbed onto the complexation binding sites of the solids. Thereafter, the solids having adsorbed selenium +4 species is separated from the water and ultimately separate from the process. The resulting effluent is subjected to a second biological treatment under aerobic conditions which converts residual selenium and organo-selenium to selenate.

IPC Classes  ?

• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
• C02F 3/30 - Aerobic and anaerobic processes
• C02F 9/00 - Multistage treatment of water, waste water or sewage

Abstract

A process for removing selenium from water is described. Through a biological reduction process, selenium +6 species are reduced to selenium +4 species. A coagulant is mixed with the water and as a result, solids having complexation binding sites are formed. The reduced selenium +4 species is adsorbed onto the complexation binding sites of the solids. Thereafter, the solids having adsorbed selenium +4 species is separated from the water and ultimately separate from the process. The resulting effluent is subjected to a second biological treatment under aerobic conditions which converts residual selenium and organo-selenium to selenate.

IPC Classes  ?

• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
• C02F 101/10 - Inorganic compounds
• C02F 3/30 - Aerobic and anaerobic processes
• C02F 103/10 - Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities

Goods & Services

installation of water and wastewater treatment equipment design services in the field of water and wastewater treatment equipment

Abstract

A method for treating water for the purpose of reducing the content of organic matter, of micropollutants and of pathogenic agents which comprises supplying water to be treated directly into a membrane reactor containing at least one filtration membrane and an adsorbent material, stirring the mixture of water and adsorbent material and extracting treated water, characterized in that the adsorbent material consists of micrograins of activated carbon having a true density of at least 0.45, a settling velocity of 30 to 50 m/h, a specific surface area of 400 to 2500 m2/g and an average particle size of between 600 and 1300 µm, less than 5% by volume of said grains having a size of less than 400 µm, in that the concentration of activated carbon micrograins in the reactor is maintained between 5 and 100 g/l, and in that no other granular or particulate material other than the activated carbon micrograins is used in the reactor, the stirring of said mixture of water and micrograins in the reactor being at least partially carried out by air injection into the mixture at a rate of 30 to 60 Nm3/m2/h and being sufficiently vigorous to avoid the deposit of activated carbon micrograins on said at least one filtration membrane.

IPC Classes  ?

• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• B01D 61/14 - UltrafiltrationMicrofiltration
• C02F 1/78 - Treatment of water, waste water, or sewage by oxidation with ozone
• C02F 101/30 - Organic compounds
• C02F 103/34 - Nature of the water, waste water, sewage or sludge to be treated from the chemical industry not provided for in groups

Abstract

Method for treating water for the purpose of reducing the content of organic matter, of micropollutants and of pathogenic agents therein, comprising the supplying of water to be treated directly into a membrane reactor containing at least one filtration membrane and an adsorbent material, stirring the mixture of water and adsorbent, and extracting treated water, characterised in that the adsorbent material consists of micrograins of activated carbon having a real density of at least 0.45, a settling velocity of 30 to 50 m/H, a specific surface area of 400 to 2500 m2/g, and an average particle size of between 600 and 1300 ?m, less than 5% by volume of said grains having a size of less than 400 ?m, in that the concentration of said activated carbon micrograins in said membrane reactor is maintained between 5 and 100 g/L, and in that no other granular or particulate material other than the activated carbon micrograins is used in said reactor, the stirring of said mixture of water and activated carbon micrograins in the membrane reactor being at least partially carried out by air injection into said mixture at a rate of 30 to 60 Nm3/m2.H and being sufficiently vigorous to avoid the deposit of activated carbon micrograins on said at least one filtration membrane.

IPC Classes  ?

• B01D 61/14 - UltrafiltrationMicrofiltration
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• C02F 1/78 - Treatment of water, waste water, or sewage by oxidation with ozone

Goods & Services

Sludge dewatering units [machines] for industrial and municipal use. Wastewater treatment apparatus or installations (fixed or movable) for industrial and municipal use; apparatus or installations (fixed or movable) for sludge treatment for industrial and municipal use; apparatus or installations (fixed or movable) for sludge dewatering for industrial and municipal use; apparatus or installations (fixed or movable) for drying sludge for industrial and municipal use; apparatus or installations (fixed or movable) for dewatering sludge through the use of an electric field for industrial and municipal use.

Goods & Services

walnut shell water filters used in industrial wastewater treatment installations to remove oil from industrial wastewater

Abstract

The present invention relates to a side stream deammonification process where deammonification is performed by a non-continuous flow integrated fixed film activated sludge sequencing batch reactor (IFAS SBR) without the need of employing an external clarifier. More particularly, the present invention entails a single reactor designed to operate as an IFAS SBR or a moving bed bioreactor (MBBR). With the design of the single tank, the two operation modes, MBBR and IFAS SBR, are interchangeable depending on the treatment needs.

IPC Classes  ?

• C02F 3/12 - Activated sludge processes
• C02F 3/08 - Aerobic processes using moving contact bodies
• C02F 9/00 - Multistage treatment of water, waste water or sewage
• C02F 3/30 - Aerobic and anaerobic processes

Abstract

A system and process for concentrating a lithium stream is disclosed. The lithium stream is directed to a reverse osmosis unit which produces a concentrate containing lithium compounds. The RO concentrate is directed through two pressure retarded osmosis (PRO) modules connected in series. The two PRO modules further concentrate the RO concentrate and at the same time yield a diluted brine that is effective to drive an energy recovery device. The RO concentrate leaving the PRO modules is directed to an osmotically assisted reverse osmosis (OARO) module which also further concentrates the RO concentrate.

IPC Classes  ?

• C22B 26/12 - Obtaining lithium
• C22B 3/22 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means
• C22B 3/42 - Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• C22B 9/02 - Refining by liquating, filtering, centrifuging, distilling or supersonic wave action

Goods & Services

(1) Unités de déshydratation des boues [machines] pour usage industriel et municipal. (2) Appareils ou installations (fixes ou mobiles) pour le traitement des boues pour usage industriel et municipal; appareils ou installations (fixes ou mobiles) pour la déshydratation des boues pour usage industriel et municipal; appareils ou installations (fixes ou mobiles) pour le séchage des boues pour usage industriel et municipal; appareils ou installations (fixes ou mobiles) pour la déshydratation des boues par l'utilisation d'un champ électrique pour usage industriel et municipal.

Goods & Services

machines, namely Sludge dewatering plants, For industrial use and For municipal use. Sludge treatment apparatus or installations (fixed or mobile) For industrial use and for municipal use; Sludge dewatering apparatus or installations (fixed or mobile) For industrial use and for municipal use; Sludge drying apparatus or installations (fixed or mobile) For industrial use and for municipal use; Sludge dewatering apparatus or installations (fixed or mobile) for use in an electric field For industrial use and for municipal use.

Goods & Services

Sludge electro-dewatering units being drying machines for industrial and municipal use, not heated, namely, sludge dryers in the nature of drying machines using electrical fields and sludge filters being parts of electrodewatering units being drying machines using electrical fields, not heated Fixed and moveable wastewater treatment apparatus and installations for industrial and municipal use; fixed and moveable wastewater treatment apparatus and installations for sludge treatment for industrial and municipal use; fixed and moveable wastewater treatment apparatus and installations for sludge dewatering for industrial and municipal use; fixed and moveable wastewater treatment apparatus and installations for drying sludge for industrial and municipal use; fixed and moveable wastewater treatment apparatus and installations for dewatering sludge through the use of an electric field for industrial and municipal use

Abstract

Method for treating water to reduce the dissolved silica content thereof, the method being characterised in that it comprises at least one step of adsorbing the dissolved silica, the step consisting in passing the water through a reactor housing an adsorbent granular material consisting of grains of iron hydroxide (III) and/or iron oxyhydroxide (III) and at least one step of regenerating the adsorbing power of the granular material, the step consisting in bringing the granular material into contact with a base and at least one chloride.

IPC Classes  ?

• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 1/00 - Treatment of water, waste water, or sewage
• B01J 20/06 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• B01J 20/34 - Regenerating or reactivating

Abstract

The present invention relates to a process for reducing hardness and organic matter concentrations in water. The water being treated is directed into and through an upflow reactor containing a media. As the water moves up the reactor, the media is fluidized. At least one softening reagent is added to the water in the reactor, resulting in an increase in pH and the precipitation of hardness. The precipitated hardness compounds are attached on the media. To enhance the reduction of organic matter in the water, a coagulant is mixed with the water upstream of the softening reactor. As the water flows upwardly through the reactor, the coagulant reacts with organic particles in the water, causing the organic particles to bind and form floc. Downstream of the reactor, the water is subjected to a filtration process that removes the floc containing the organic matter.

IPC Classes  ?

• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
• C02F 5/02 - Softening water by precipitation of the hardness
• C02F 101/20 - Heavy metals or heavy metal compounds
• C02F 101/30 - Organic compounds

Abstract

The present invention relates to a process for reducing hardness and organic matter concentrations in water. The water being treated is directed into and through an upflow reactor containing a media. As the water moves up the reactor, the media is fluidized. At least one softening reagent is added to the water in the reactor, resulting in an increase in pH and the precipitation of hardness. The precipitated hardness compounds are attached on the media. To enhance the reduction of organic matter in the water, a coagulant is mixed with the water upstream of the softening reactor. As the water flows upwardly through the reactor, the coagulant reacts with organic particles in the water, causing the organic particles to bind and form floc. Downstream of the reactor, the water is subjected to a filtration process that removes the floc containing the organic matter.

IPC Classes  ?

• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
• C02F 5/02 - Softening water by precipitation of the hardness

Abstract

The present invention relates to a process for biological filtration of water loaded with nitrogenous pollutants with a view to reducing the global nitrogen content of said water, characterized in that It comprises a first step of nitritation and filtration carried out in an aerated first biological reactor, a second step of deammonification, denitrification and filtration carried out in a non-aerated second biological reactor, and a step of evaluation of the ratio of the nitrite content to the ammoniacal nitrogen content of the water at the outlet of the first reactor. When this ratio is greater than a predetermined stoichiometry value, the process according to the invention comprises a step of addition of water to be treated to the water originating from the first reactor so as to obtain, at the inlet of the second reactor, a mixture having a ratio of the nitrite content to the ammoniacal nitrogen content which is close to the stoichiometric ratio of the anammox reaction.

IPC Classes  ?

• C02F 3/30 - Aerobic and anaerobic processes
• C02F 3/06 - Aerobic processes using submerged filters
• C02F 3/08 - Aerobic processes using moving contact bodies

Abstract

The present invention relates to a process for biological filtration of water loaded with nitrogenous pollutants with a view to reducing the global nitrogen content of said water, characterized in that It comprises a first step of nitritation and filtration carried out in an aerated first biological reactor, a second step of deammonification, denitrification and filtration carried out in a non-aerated second biological reactor, and a step of evaluation of the ratio of the nitrite content to the ammoniacal nitrogen content of the water at the outlet of the first reactor. When this ratio is greater than a predetermined stoichiometry value, the process according to the invention comprises a step of addition of water to be treated to the water originating from the first reactor so as to obtain, at the inlet of the second reactor, a mixture having a ratio of the nitrite content to the ammoniacal nitrogen content which is close to the stoichiometric ratio of the anammox reaction.

IPC Classes  ?

• C02F 3/06 - Aerobic processes using submerged filters
• C02F 3/08 - Aerobic processes using moving contact bodies
• C02F 3/30 - Aerobic and anaerobic processes

Abstract

The present invention relates to a method of treating frac water containing barium, magnesium, scale-inhibiting compounds and suspending solids and reducing the effectiveness of the scale-inhibiting compounds that tend to prevent barium and magnesium from precipitating.

IPC Classes  ?

• C02F 9/00 - Multistage treatment of water, waste water or sewage
• C02F 1/00 - Treatment of water, waste water, or sewage
• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
• C02F 1/58 - Treatment of water, waste water, or sewage by removing specified dissolved compounds
• C02F 1/04 - Treatment of water, waste water, or sewage by heating by distillation or evaporation
• C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
• C02F 1/68 - Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water

Abstract

The present invention entails a method of treating an ion exchange regenerant stream containing selenate and removing the selenate from the regenerant stream through an oxidation-reduction process where selenate is reduced to selenite and the selenite is adsorbed onto an adsorbent which, in one embodiment, comprises iron oxide or iron oxy hydroxide. In particular, the method includes catalytically reducing the selenate to selenite in a selenate reduction reactor by reacting iron powder with the selenate in the presence of a nickel powder, which functions as a catalyst, to form selenite which is then adsorbed onto the iron oxide or iron oxy hydroxide.

IPC Classes  ?

• C02F 1/42 - Treatment of water, waste water, or sewage by ion-exchange
• C02F 9/00 - Multistage treatment of water, waste water or sewage
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• C02F 1/70 - Treatment of water, waste water, or sewage by reduction
• C02F 101/10 - Inorganic compounds

Abstract

Method for making surface water drinkable, which method is aimed at reducing the suspended matter content, turbidity, organic matter content and colour of the water, and is characterised in that it comprises: ●a step of nanofiltering the water (2) through at least one nanofiltration membrane (2) which has a breakdown capacity between 800 Da and 2000 Da, preferably between 800 and 1000 Da, the nanofiltration step leading to the acquisition of a permeate (7) and a concentrate (5), ●wherein the nanofiltration step is carried out with a conversion rate greater than 95%, ●the method being carried out without any step of adding an anti-scaling agent or any step of remineralising the permeate.

IPC Classes  ?

• C02F 9/00 - Multistage treatment of water, waste water or sewage
• B01D 61/02 - Reverse osmosisHyperfiltration
• B01D 69/02 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or propertiesManufacturing processes specially adapted therefor characterised by their properties
• B01D 61/14 - UltrafiltrationMicrofiltration
• B01D 61/58 - Multistep processes
• B01D 71/68 - PolysulfonesPolyethersulfones

Abstract

The invention pertains to a water filter unit (2000) with an integrated lifting system (1000), comprising a water filter(600), at least two lifting pillars (100), at least two sleeves (200) and a slide connector (400), wherein the sleeves (200) are attached at the corners of the water filter (600), the length axis of the sleeves being perpendicular to 5 the mounting surface of the water filter (600), the lifting pillars (100) are arranged to fit inside the sleeves (200), wherein the length axis of the lifting pillars (100) coincide with the length axis of the sleeves (200), such that the sleeves (200) may slide along the lifting pillars (100), thereby forming at least two lifting pillar and sleeve pairs, wherein the at least two pairs are connected to at least one lifting aid for lifting the water filter 10 unit (2000) from an operative position to a raised position, and the slide connector (400) comprises a filter side connector (401) connected to the water filter unit (2000) arranged for connection to an external source thereby forming a fluid connection between the water filter unit (2000) and the external source when the water filter unit (2000) is lowered into the operative position. Furthermore, the invention discloses a lifting 15 system (1000) for a water filter unit (2000).

IPC Classes  ?

• B01D 29/96 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor in which the filtering elements are moved between filtering operationsParticular measures for removing or replacing the filtering elementsTransport systems for filters
• B01D 35/30 - Filter housing constructions

Abstract

The invention pertains to a water filter unit (2000) with an integrated lifting system (1000), comprising a water filter(600), at least two lifting pillars (100), at least two sleeves (200) and a slide connector (400), wherein the sleeves (200) are attached at the corners of the water filter (600), the length axis of the sleeves being perpendicular to 5 the mounting surface of the water filter (600), the lifting pillars (100) are arranged to fit inside the sleeves (200), wherein the length axis of the lifting pillars (100) coincide with the length axis of the sleeves (200), such that the sleeves (200) may slide along the lifting pillars (100), thereby forming at least two lifting pillar and sleeve pairs, wherein the at least two pairs are connected to at least one lifting aid for lifting the water filter 10 unit (2000) from an operative position to a raised position, and the slide connector (400) comprises a filter side connector (401) connected to the water filter unit (2000) arranged for connection to an external source thereby forming a fluid connection between the water filter unit (2000) and the external source when the water filter unit (2000) is lowered into the operative position. Furthermore, the invention discloses a lifting 15 system (1000) for a water filter unit (2000).

IPC Classes  ?

• B01D 29/96 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor in which the filtering elements are moved between filtering operationsParticular measures for removing or replacing the filtering elementsTransport systems for filters
• B01D 35/30 - Filter housing constructions

Abstract

Installation for the pressurised filtration of liquid with a view to producing drinking water, comprising at least one membrane-based drinking-water production unit (MPU), each MPU comprising: a plurality of filtration blocks each containing a bundle of pressure tubes mounted in parallel, each pressure tube accommodating at least two membrane-based filtration modules with spiral membranes or hollow-fibre membranes mounted in series, means (20) for feeding the liquid that is to be filtered, means for removing the filtered liquid, and means (30) for removing the concentrate, characterised in that the membranes of the filtration modules are of at least two different types selected from the group consisting of reverse-osmosis membranes and low-pressure reverse-osmosis membranes (4-6), on the one hand, and nanofiltration membranes (1-3) on the other hand, and in that at least one MPU comprises means (21-26) making it possible to alter the order in which the blocks of pressure tubes that it groups together are supplied with fluid. The method consists in supplying the filtration blocks of at least one MPU in a first order of supply in which the tubes containing nanofiltration membranes are at the head of the MPU and then in supplying the pressure tubes in a second order of supply in which the pressure tubes containing reverse-osmosis membranes or low-pressure reverse-osmosis membranes are at the head of the MPU.

IPC Classes  ?

• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• B01D 63/02 - Hollow fibre modules
• B01D 63/10 - Spiral-wound membrane modules
• C02F 103/08 - Seawater, e.g. for desalination

Abstract

a) and which is separated from said contact tank by a vertical wall (8), and means for discharging floated sludge, characterised in that said contact tank (3) is provided along said flotation tank (6) and delimits a single contact zone for said water to be treated with said white water, and in that said supply means for water to be treated (4) are configured to distribute the water to be treated in said contact tank according to a longitudinal water supply flow, the water distribution flow in the flotation tank being perpendicular to said water supply flow in said contact tank.

IPC Classes  ?

• C02F 1/24 - Treatment of water, waste water, or sewage by flotation
• B01D 21/00 - Separation of suspended solid particles from liquids by sedimentation
• B01D 21/24 - Feed or discharge mechanisms for settling tanks

Abstract

The invention relates to a water treatment method comprising a step of injecting ozone by a Venturi effect into the water to be treated, immediately followed by a step of ozone saturation of the water to be treated, a step of bringing the ozonated water to be treated into a reactor comprising a fluidised bed of activated carbon particles, a step of placing the ozonated water to be treated in contact with the activated carbon particles according to a flow of water ascending in the reactor, and a step of discharging the water treated in this way. The invention also relates to a facility comprising an activated carbon reactor, means for bringing the water to be treated into the reactor, means for discharging the treated water, means for injecting ozone into the water by a Venturi effect and means for saturating the water with ozone mounted directly, or as a bypass, on the means for bringing water into the reactor.

IPC Classes  ?

• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 1/78 - Treatment of water, waste water, or sewage by oxidation with ozone

Abstract

The invention relates to a water treatment method comprising a step of injecting ozone by a Venturi effect into the water to be treated, immediately followed by a step of ozone saturation of the water to be treated, a step of bringing the ozonated water to be treated into a reactor comprising a fluidised bed of activated carbon particles, a step of placing the ozonated water to be treated in contact with the activated carbon particles according to a flow of water ascending in the reactor, and a step of discharging the water treated in this way. The invention also relates to a facility comprising an activated carbon reactor, means for bringing the water to be treated into the reactor, means for discharging the treated water, means for injecting ozone into the water by a Venturi effect and means for saturating the water with ozone mounted directly, or as a bypass, on the means for bringing water into the reactor.

IPC Classes  ?

• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 1/78 - Treatment of water, waste water, or sewage by oxidation with ozone

Abstract

A rotary disc filter having a backwash system that includes a series of feed pipes that project into and between successive filter discs that are mounted on a rotatable drum. Connected to an outer terminal end portion of the feed pipes is a series of nozzle holders. Each nozzle holder includes a main conduit, a series of branch conduits that project outwardly from the main conduit, and a connector for connecting the nozzle holder to a respective feed pipe. A series of detachable nozzles are secured to the outer terminal ends of the branch conduits.

IPC Classes  ?

• B01D 33/50 - Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
• B01D 33/15 - Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces

Abstract

A method is disclosed for concentrating and purifying an eluate brine and producing a purified lithium compound. An extraction eluate, rich in lithium, is directed to a nanofiltration unit or a softening process that removes sulfate and/or calcium and magnesium. Permeate from the nanofiltration unit or the effluent from the softening process is directed through an electrodialysis unit. As the lithium-rich solution moves through the electrodialysis unit, lithium, sodium and chloride ions pass from the solution through a cation-transfer membrane and an anion-transfer membrane to concentrate compartments. A dilute stream is directed through the concentrate compartments and collects the lithium, sodium and chloride ions. The electrodialysis unit also produces a product stream which contains non-ionized impurities, such as silica and/or boron. Concentrate from the electrodialysis unit is subject to a precipitation process that produces a lithium compound that is subsequently subjected to a purification process.

IPC Classes  ?

• C01D 15/08 - CarbonatesBicarbonates
• B01D 9/00 - Crystallisation
• B01D 15/36 - Selective adsorption, e.g. chromatography characterised by the separation mechanism involving ionic interaction, e.g. ion-exchange, ion-pair, ion-suppression or ion-exclusion
• B01D 61/02 - Reverse osmosisHyperfiltration
• B01D 61/42 - ElectrodialysisElectro-osmosis
• B01D 61/44 - Ion-selective electrodialysis
• B01D 61/58 - Multistep processes
• B01J 47/12 - Ion-exchange processes in generalApparatus therefor characterised by the use of ion-exchange material in the form of ribbons, filaments, fibres or sheets, e.g. membranes
• C02F 9/00 - Multistage treatment of water, waste water or sewage
• C02F 1/04 - Treatment of water, waste water, or sewage by heating by distillation or evaporation
• C02F 1/42 - Treatment of water, waste water, or sewage by ion-exchange
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• C02F 1/469 - Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities

Abstract

The present invention relates to a system and process for treating a feedwater wherein the system includes at least one RO or nanofiltration unit that receives a feed under high pressure and produces a concentrate that is directed to and held at low pressure in a concentrate accumulator. Generally the permeate or the inlet feedwater is maintained at a constant flow rate. Periodically the system is switched from a mode 1 or normal operating process to a mode 2 where the concentrate is drained from the concentrate accumulator. However, in mode 2, the feedwater is still directed into the system and through the RO or nanofiltration unit which produces the permeate and the concentrate.

IPC Classes  ?

• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• B01D 61/06 - Energy recovery
• B01D 61/12 - Controlling or regulating
• B01D 61/02 - Reverse osmosisHyperfiltration

Goods & Services

Wastewater treatment and filtration installations, these goods used for adapting and optimizing purified water recovery. Wastewater treatment and filtration services, these services used for adapting and optimizing purified water recovery. Providing software for remote and on-site monitoring of wastewater filtration installations aimed at increasing filtration process efficiency.

Abstract

The invention pertains to a carrier to carry a biofilm in a moving bed biofilm reactor (MBBR) having improved stability against environmental stresses. The carrier comprises a carrier material, wherein the carrier material comprises at least one high density polyethylene having a bimodal molecular weight distribution, whereby the carrier material has a bimodal or a multimodal molecular weight distribution. Also provided is use of the carrier in a moving bed biofilm reactor (MBBR) process.

IPC Classes  ?

• C02F 3/08 - Aerobic processes using moving contact bodies
• C02F 3/10 - PackingsFillingsGrids
• B01J 19/30 - Loose or shaped packing elements, e.g. Raschig rings or Berl saddles, for pouring into the apparatus for mass or heat transfer
• G01N 11/16 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties by moving a body within the material by measuring damping effect upon oscillatory body
• C08L 23/04 - Homopolymers or copolymers of ethene

Abstract

The invention pertains to a carrier to carry a biofilm in a moving bed biofilm reactor (MBBR) having improved stability against environmental stresses. The carrier comprises a carrier material, wherein the carrier material comprises at least one high density polyethylene having a bimodal molecular weight distribution, whereby the carrier material has a bimodal or a multimodal molecular weight distribution. Also provided is use of the carrier in a moving bed biofilm reactor (MBBR) process.

IPC Classes  ?

• B01J 19/30 - Loose or shaped packing elements, e.g. Raschig rings or Berl saddles, for pouring into the apparatus for mass or heat transfer
• C02F 3/08 - Aerobic processes using moving contact bodies
• C02F 3/10 - PackingsFillingsGrids
• C08L 23/04 - Homopolymers or copolymers of ethene
• G01N 11/16 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties by moving a body within the material by measuring damping effect upon oscillatory body

Goods & Services

(1) Installations de traitement et de filtration des eaux usées permettant d'adapter et d'optimiser la récupération de l'eau purifiée (1) Services de traitement et de filtration des eaux usées, ces services permettant d'adapter et d'optimiser la récupération de l'eau purifiée. (2) Mise à disposition de logiciels informatiques non téléchargeables destinés à la surveillance à distance et sur site des installations de filtration des eaux usées afin d'accroître l'efficacité du processus de filtration.

Abstract

A method and apparatus for a Coanda effect-induced tube settler assembly lamellae cleaning system for raw water or semi-potable drinking water treatment clarifier. A tangential compressed air source is injected from compressed air tubes near J-shaped support deflector beams. The combined high pressure air from a high pressure fixed air grid and waste water fluid flow stream in a main waste water stream to be clarified, creates a Coanda-effect fluid inducing turbulence when used in conjunction with cross-sectionally J-shaped deflector beams. This combined fluid flowstream provides hydrodynamic cleaning pressure axially through the tubes' lumen of the tube settler assembly within a clarifier cell basin enclosure.

IPC Classes  ?

• B08B 5/02 - Cleaning by the force of jets, e.g. blowing-out cavities
• B08B 9/027 - Cleaning the internal surfacesRemoval of blockages
• C02F 1/00 - Treatment of water, waste water, or sewage
• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities

Abstract

the threshold concentration of ammonium ions being calculated to allow the development of Anammox microorganisms during the phase in which the biofilm is placed, at least locally, under anoxic conditions.

IPC Classes  ?

• C02F 3/30 - Aerobic and anaerobic processes
• C02F 3/08 - Aerobic processes using moving contact bodies
• C02F 101/10 - Inorganic compounds
• C02F 101/16 - Nitrogen compounds, e.g. ammonia

Abstract

A method and apparatus for a Coanda effect-induced tube settler assembly lamellae cleaning system for raw water or semi-potable drinking water treatment clarifier. A tangential compressed air source is injected from compressed air tubes near J-shaped support deflector beams. The combined high pressure air from a high pressure fixed air grid and waste water fluid flow stream in a main waste water stream to be clarified, creates a Coanda-effect fluid inducing turbulence when used in conjunction with cross-sectionally J-shaped deflector beams. This combined fluid flowstream provides hydrodynamic cleaning pressure axially through the tubes' lumen of the tube settler assembly within a clarifier cell basin enclosure.

IPC Classes  ?

• C02F 1/00 - Treatment of water, waste water, or sewage
• B08B 5/02 - Cleaning by the force of jets, e.g. blowing-out cavities
• B08B 9/027 - Cleaning the internal surfacesRemoval of blockages
• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities

Goods & Services

Apparatus, devices and units for water treatment and purification by filtration and coalescence process using aggregate fillers for de-oiling and removal of suspended solids from water. Water treatment and purification by filtration and coalescence process using aggregate fillers for de-oiling and removal of suspended solids from water.

Abstract

The present invention relates to a mainstream deammonification process for removing ammonium from wastewater that suppresses NOB growth and produces a sludge having good settling characteristics, the process comprising: clarifying the wastewater stream in a primary clarifier (12) and producing a primary effluent; directing a first portion of the primary effluent to a biological treatment reactor (14) and removing carbon to produce treated wastewater; directing treated wastewater into an integrated fixed film activated sludge (IFAS) deammonification reactor (16) integrating nitritation and anammox processes and that is provided with intermittent aeration; directing a second portion of the primary effluent to the IFAS deammonification reactor (16) by-passing the biological treatment reactor (14), and injecting this second portion only during periods of air off and refraining from injecting during periods of air on, directing the IFAS deammonification reactor (16) effluent to a secondary clarifier (18) and producing a secondary effluent and a clarifier underflow, and recycling at least a portion of the underflow to the IFAS deammonification reactor (16).

IPC Classes  ?

• C02F 9/00 - Multistage treatment of water, waste water or sewage
• C02F 3/30 - Aerobic and anaerobic processes
• C02F 3/00 - Biological treatment of water, waste water, or sewage
• C02F 3/08 - Aerobic processes using moving contact bodies
• C02F 3/10 - PackingsFillingsGrids
• C02F 1/00 - Treatment of water, waste water, or sewage
• C02F 101/10 - Inorganic compounds
• C02F 101/16 - Nitrogen compounds, e.g. ammonia

Goods & Services

Apparatus, devices and units for water treatment and purification by filtration and coalescence process using aggregate fillers for de-oiling and removal of suspended solids from water Water treatment and purification by filtration and coalescence process using aggregate fillers for de-oiling and removal of suspended solids from water

Abstract

A method for treating an aqueous fluid containing a biodegradable organic substance in an installation that includes an upflow bioreactor containing a sludge bed, wherein the sludge bed includes biomass, an external separator, and a conditioning tank. The method includes treating the fluid in the conditioning tank; feeding the treated fluid into a lower part of the bioreactor and forming biogas; withdrawing the fluid from an upper part of the bioreactor, which withdrawn fluid includes biomass; feeding the aqueous fluid withdrawn from the upper part of the bioreactor into the external separator, wherein the aqueous fluid that includes the biomass is separated into a liquid phase and a fluid phase enriched in biomass; returning the fluid phase enriched in biomass from the external separator to the bioreactor; and returning a part of the liquid phase to the conditioning tank.

IPC Classes  ?

• C02F 3/28 - Anaerobic digestion processes
• C02F 1/20 - Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
• C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
• C12M 1/107 - Apparatus for enzymology or microbiology with means for collecting fermentation gases, e.g. methane
• C12M 1/00 - Apparatus for enzymology or microbiology
• C02F 103/28 - Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
• C02F 103/32 - Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
• C02F 103/36 - Nature of the water, waste water, sewage or sludge to be treated from the chemical industry not provided for in groups from the manufacture of organic compounds

Abstract

A high recovery variable volume reverse osmosis system where the volume of concentrate cycled through the RO system is reduced in response to recovery levels increasing. By reducing the volume of concentrate cycled through the RO system, this reduces the cycle time of highly saturated concentrate passing through the RO system. Reducing the cycle time of concentrate passing through the RO system tends to minimize or reduce membrane scaling.

IPC Classes  ?

• B01D 65/08 - Prevention of membrane fouling or of concentration polarisation
• B01D 61/02 - Reverse osmosisHyperfiltration
• B01D 61/06 - Energy recovery
• B01D 61/08 - Apparatus therefor
• B01D 61/10 - AccessoriesAuxiliary operations
• B01D 61/12 - Controlling or regulating
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis

Abstract

The present invention relates to a system or process for anaerobically treating wastewater. The system employs a pre-treatment unit that includes an MBBR having biomass supported on biofilm carriers. The biomass hydrolyzes or leads to a level of hydrolysis of particulate matter and acidifies the wastewater. In the process, the biomass yields relatively high acid production rates while employing a relatively short hydraulic retention time.

IPC Classes  ?

• C02F 3/28 - Anaerobic digestion processes
• C02F 11/04 - Anaerobic treatmentProduction of methane by such processes

Abstract

Apparatus for separating grit from a grit-loaded liquid matrix while retaining organic solids in suspension, including an inlet for admitting liquid matrix into the apparatus, an outlet for removing grit-lite liquid matrix from the apparatus main chamber, and a vortex system for removing separated liquid matrix grit from the apparatus. The grit settling main chamber defines upper and lower subchambers communicating with each other through a central aperture. A fluid flow speed gradient is established between the apparatus fluid inlet and outlet. An Eddy type fluid dynamic component is added, providing combined enhanced coarse grit and fine organics discrimination and separation. The Eddy fluid dynamic component may consist of a trio of stationary fresh water supply force fed eductors. Each eductor produces a fresh water fluid flow interacting with the liquid matrix fluid flow inside the upper subchamber, whereby Eddy-type turbulences are generating promoting fine, liquid matrix grit particle separation from the liquid matrix.

IPC Classes  ?

• C02F 1/38 - Treatment of water, waste water, or sewage by centrifugal separation

Abstract

The invention relates to a method for treating an aqueous fluid comprising a biodegradable organic substance in an installation comprising an upflow bioreactor containing a sludge bed, said sludge bed comprising biomass, an external separator, and a conditioning tank, comprising - treating the fluid in the conditioning tank; - feeding the treated fluid into a lower part of the bioreactor and forming biogas; - withdrawing the fluid from an upper part of the bioreactor, which withdrawn fluid comprises biomass; - feeding the aqueous fluid withdrawn from the upper part of the bioreactor into the external separator wherein the aqueous fluid comprising the biomass is separated into a liquid phase, and a fluid phase enriched in biomass; - returning said fluid phase enriched in biomass from the external separator to the bioreactor; and - returning a part of said liquid phase to the conditioning tank.

IPC Classes  ?

• C02F 3/28 - Anaerobic digestion processes
• C12M 1/107 - Apparatus for enzymology or microbiology with means for collecting fermentation gases, e.g. methane
• C12M 1/00 - Apparatus for enzymology or microbiology
• C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
• C02F 103/32 - Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
• C02F 103/28 - Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
• C02F 103/34 - Nature of the water, waste water, sewage or sludge to be treated from the chemical industry not provided for in groups

Abstract

The invention relates to a method for treating an aqueous fluid comprising a biodegradable organic substance in an installation comprising an upflow bioreactor containing a sludge bed, said sludge bed comprising biomass, an external separator, and a conditioning tank, comprising - treating the fluid in the conditioning tank; - feeding the treated fluid into a lower part of the bioreactor and forming biogas; - withdrawing the fluid from an upper part of the bioreactor, which withdrawn fluid comprises biomass; - feeding the aqueous fluid withdrawn from the upper part of the bioreactor into the external separator wherein the aqueous fluid comprising the biomass is separated into a liquid phase, and a fluid phase enriched in biomass; - returning said fluid phase enriched in biomass from the external separator to the bioreactor; and - returning a part of said liquid phase to the conditioning tank.

IPC Classes  ?

• C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
• C02F 3/28 - Anaerobic digestion processes
• C12M 1/00 - Apparatus for enzymology or microbiology
• C12M 1/107 - Apparatus for enzymology or microbiology with means for collecting fermentation gases, e.g. methane

Abstract

Method and apparatus for biologically treating wastewater using a bioreactor (4) comprising a bed (12) of chemically inert aggregate in which emerged macrophytes (13) are rooted, characterised in that it comprises: - a preliminary dilution step consisting in diluting the water to be treated according to a dilution ratio between 8 and 50 and preferably between 10 and 20, - organising the supply to the bio-reactor (4) with, and the emptying of the bio-reactor of, water thus diluted according to tidal cycles lasting less than two hours, preferably less than one hour, during each of which at least one portion of the bed (12) of chemically inert aggregate is dewatered and then submerged by the water so as to provide, in the bed (12) of chemically inert aggregate, successive periods of aeration and non-aeration, - a step of evacuating the treated water, the preliminary dilution step consisting in diluting the water to be treated with water originating at least partially from the method.

IPC Classes  ?

• C02F 9/00 - Multistage treatment of water, waste water or sewage
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• C02F 1/76 - Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
• C02F 1/78 - Treatment of water, waste water, or sewage by oxidation with ozone
• C02F 3/30 - Aerobic and anaerobic processes
• C02F 3/32 - Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
• C02F 103/00 - Nature of the water, waste water, sewage or sludge to be treated

Abstract

The present invention relates to a process for treating an aqueous fluid comprising a biodegradable organic substance the process comprising - a bioreactor unit batch feeding stage, wherein the aqueous fluid that is to be treated is fed into a bioreactor unit; - a batch reaction stage, wherein the aqueous fluid is microbiologically treated and biogas is produced in the bioreactor unit; - a degassing unit feeding stage, wherein an aqueous suspension comprising microbiologically treated aqueous fluid and biomass is withdrawn from the bioreactor unit and fed batch-wise into a degassing unit; and - a semi-continuous biomass separator unit feeding stage, wherein the degassed aqueous suspension is withdrawn from the batch degassing unit and fed into a biomass separator.

IPC Classes  ?

• C02F 1/20 - Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
• C02F 3/28 - Anaerobic digestion processes
• C02F 11/04 - Anaerobic treatmentProduction of methane by such processes
• C02F 11/12 - Treatment of sludgeDevices therefor by de-watering, drying or thickening

Abstract

The present invention relates to a process for treating an aqueous fluid comprising a biodegradable organic substance the process comprising - a bioreactor unit batch feeding stage, wherein the aqueous fluid that is to be treated is fed into a bioreactor unit; - a batch reaction stage, wherein the aqueous fluid is microbiologically treated and biogas is produced in the bioreactor unit; - a degassing unit feeding stage, wherein an aqueous suspension comprising microbiologically treated aqueous fluid and biomass is withdrawn from the bioreactor unit and fed batch-wise into a degassing unit; and - a semi-continuous biomass separator unit feeding stage, wherein the degassed aqueous suspension is withdrawn from the batch degassing unit and fed into a biomass separator.

IPC Classes  ?

• C02F 3/28 - Anaerobic digestion processes
• C02F 11/04 - Anaerobic treatmentProduction of methane by such processes
• C02F 1/20 - Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
• C02F 11/12 - Treatment of sludgeDevices therefor by de-watering, drying or thickening

Abstract

a means for deflecting fluid (20) disposed at the top part, intended for reducing the speed of the upflow (90) of fluid (15) and enabling the formation of a tranquil zone (27), said means for recovering treated fluid being disposed downstream from said tranquil zone (27).

IPC Classes  ?

• C02F 1/28 - Treatment of water, waste water, or sewage by sorption

Abstract

A process for treating frac flowback that contains barium, naturally occurring radioactive materials (NORM) and hardness for minimizing the amount of sludge produced that contains hazardous levels of NORM by employing a dual stage precipitation process. In the first stage a sulfate source is mixed with the frac flowback and barium sulfate and NORM is precipitated, the frac flowback is subjected to a solids-liquid separation process to produce a first effluent and a first sludge. In the second stage hardness is precipitated from the first effluent by addition of an alkali reagent, said first effluent is also subjected to solids-liquid separation producing a second effluent and a second sludge. The first sludge is recycled and mixed with the frac flowback and the sulfate source in a sufficient amount to maintain the NORM concentration in the second sludge at or below a threshold level.

IPC Classes  ?

• C02F 9/00 - Multistage treatment of water, waste water or sewage
• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
• C02F 1/62 - Heavy metal compounds
• C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
• C02F 5/06 - Softening water by precipitation of the hardness using calcium compounds
• C02F 1/00 - Treatment of water, waste water, or sewage
• C02F 101/00 - Nature of the contaminant
• C02F 101/20 - Heavy metals or heavy metal compounds
• C02F 103/36 - Nature of the water, waste water, sewage or sludge to be treated from the chemical industry not provided for in groups from the manufacture of organic compounds

Abstract

The present invention provides a method of controlling a wastewater treatment plant. The plant comprises at least one process tank and an aeration structure configured for aeration of the at least one process tank. The method comprises alternating steps of increasing aeration to the at least one process tank when a first event occurs, wherein the first event is one of when a first threshold value of a first tank parameter is reached and when a first predetermined time period has expired, and decreasing aeration to the at least one process tank when a second event occurs, wherein the second event is one of when a second threshold value of a second tank parameter is reached and when a second predetermined time period has expired. The first and second tank parameters are selected from a group consisting of nitrate concentration, nitrite concentration, and ammonium concentration determined in the water in the at least one process tank, and the steps of increasing aeration and decreasing aeration are carried out to reduce N2O emissions from the plant.

IPC Classes  ?

• C02F 3/00 - Biological treatment of water, waste water, or sewage
• C02F 3/30 - Aerobic and anaerobic processes

Abstract

A system and process for concentrating a lithium stream is disclosed. The lithium stream is directed to a reverse osmosis unit which produces a concentrate containing lithium compounds. The RO concentrate is directed through two pressure retarded osmosis (PRO) modules connected in series. The two PRO modules further concentrate the RO concentrate and at the same time yield a diluted brine that is effective to drive an energy recovery device. The RO concentrate leaving the PRO modules is directed to an osmotically assisted reverse osmosis (OARO) module which also further concentrates the RO concentrate.

IPC Classes  ?

• C22B 3/22 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means
• C22B 26/12 - Obtaining lithium
• B01D 61/58 - Multistep processes
• C22B 3/42 - Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
• F03G 7/00 - Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
• B01D 61/22 - Controlling or regulating
• B01D 61/02 - Reverse osmosisHyperfiltration

Abstract

Process for treating an aqueous fluid whereby a biogas is produced in an installation comprising a bioreactor and a separate container, the process comprising (i) a bioreactor feeding stage; (ii) a batch reaction stage, wherein biogas is formed and formed biogas is temporarily stored in the separate container, and at least one further stage (iii) comprising a settling stage and/or an aqueous fluid effluent discharge stage, wherein the biogas stored in the separate container is used to reduce fluctuations in a biogas exit flow from the installation. An installation for carrying out the process and the use thereof.

IPC Classes  ?

• C02F 3/28 - Anaerobic digestion processes
• B01D 21/00 - Separation of suspended solid particles from liquids by sedimentation
• C02F 3/00 - Biological treatment of water, waste water, or sewage
• C02F 11/04 - Anaerobic treatmentProduction of methane by such processes
• C02F 103/32 - Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters

Abstract

The present invention relates to a method of treating frac water containing barium, magnesium, scale-inhibiting compounds and suspending solids and reducing the effectiveness of the scale-inhibiting compounds that tend to prevent barium and magnesium from precipitating.

IPC Classes  ?

• C02F 9/00 - Multistage treatment of water, waste water or sewage
• C02F 1/00 - Treatment of water, waste water, or sewage
• C02F 1/04 - Treatment of water, waste water, or sewage by heating by distillation or evaporation
• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
• C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
• C02F 1/68 - Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
• C02F 101/00 - Nature of the contaminant
• C02F 101/10 - Inorganic compounds

Abstract

The invention pertains to a bio-carrier to carry a biofilm in a moving bed biofilm reactor (MBBR), the carrier being a particle comprising dehydrated sludge. The use of a bio-carrier in a MBBR process to purify a liquid from contaminants is disclosed and a method of manufacture of a bio-carrier is provided.

IPC Classes  ?

• C02F 3/12 - Activated sludge processes
• C02F 1/24 - Treatment of water, waste water, or sewage by flotation
• C02F 3/08 - Aerobic processes using moving contact bodies
• C02F 3/10 - PackingsFillingsGrids
• C02F 3/30 - Aerobic and anaerobic processes
• C02F 11/12 - Treatment of sludgeDevices therefor by de-watering, drying or thickening
• C02F 11/122 - Treatment of sludgeDevices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
• C02F 11/127 - Treatment of sludgeDevices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
• C02F 11/13 - Treatment of sludgeDevices therefor by de-watering, drying or thickening by heating
• C02F 11/14 - Treatment of sludgeDevices therefor by de-watering, drying or thickening with addition of chemical agents
• C02F 11/143 - Treatment of sludgeDevices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
• C02F 11/147 - Treatment of sludgeDevices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances

Abstract

The present invention relates to a method of treating sludge containing phosphorus, ammonia and magnesium and enhancing the dewaterability of the sludge. The sludge is directed into a biological fermenter operated under anaerobic conditions. By controlling the temperature of the sludge in the fermenter or the hydraulic retention time of the sludge in the fermenter, phosphorus, ammonia and magnesium is released from the solids in the sludge into a liquid forming a part of the sludge. Sludge from the fermenter is subjected to a solids-liquid separation process that produces a concentrated sludge and a liquid. The concentrated sludge or separated solids is directed to a thermal hydrolysis reactor that thermally hydrolyzes the concentrated sludge. After thermally hydrolyzing the concentrated sludge, the concentrated sludge is directed to an anaerobic digester that anaerobically digests the concentrated sludge.

IPC Classes  ?

• C02F 11/04 - Anaerobic treatmentProduction of methane by such processes
• C05F 17/60 - Heating or cooling during the treatment
• C05F 17/40 - Treatment of liquids or slurries
• C02F 9/00 - Multistage treatment of water, waste water or sewage
• C02F 3/12 - Activated sludge processes
• C02F 11/12 - Treatment of sludgeDevices therefor by de-watering, drying or thickening
• C02F 11/13 - Treatment of sludgeDevices therefor by de-watering, drying or thickening by heating
• C02F 11/18 - Treatment of sludgeDevices therefor by thermal conditioning
• C05F 7/00 - Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
• C02F 3/00 - Biological treatment of water, waste water, or sewage
• C02F 101/10 - Inorganic compounds
• C02F 101/16 - Nitrogen compounds, e.g. ammonia

Abstract

Method for treating water to reduce the dissolved silica content thereof, the method being characterised in that it comprises at least one step of adsorbing the dissolved silica, the step consisting in passing the water through a reactor housing an adsorbent granular material consisting of grains of iron hydroxide (III) and/or iron oxyhydroxide (III) and at least one step of regenerating the adsorbing power of the granular material, the step consisting in bringing the granular material into contact with a base and at least one chloride.

IPC Classes  ?

• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• B01J 20/06 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group
• B01J 20/34 - Regenerating or reactivating
• C02F 101/10 - Inorganic compounds
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• C02F 103/02 - Non-contaminated water, e.g. for industrial water supply

Abstract

The present invention entails a method of treating an ion exchange regenerant stream containing selenate and removing the selenate from the regenerant stream through an oxidation-reduction process where selenate is reduced to selenite and the selenite is adsorbed onto an adsorbent which, in one embodiment, comprises iron oxide or iron oxyhydroxide. In particular, the method includes catalytically reducing the selenate to selenite in a selenate reduction reactor by reacting iron powder with the selenate in the presence of a nickel powder, which functions as a catalyst, to form selenite which is then adsorbed onto the iron oxide or iron oxyhydroxide.

IPC Classes  ?

• B01D 15/04 - Separating processes involving the treatment of liquids with solid sorbentsApparatus therefor with ion-exchange materials as adsorbents
• B01J 20/30 - Processes for preparing, regenerating or reactivating
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 1/42 - Treatment of water, waste water, or sewage by ion-exchange
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• C02F 1/70 - Treatment of water, waste water, or sewage by reduction
• C02F 9/00 - Multistage treatment of water, waste water or sewage

Abstract

The present invention entails a method of treating an ion exchange regenerant stream containing selenate and removing the selenate from the regenerant stream through an oxidation-reduction process where selenate is reduced to selenite and the selenite is adsorbed onto an adsorbent which, in one embodiment, comprises iron oxide or iron oxyhydroxide. In particular, the method includes catalytically reducing the selenate to selenite in a selenate reduction reactor by reacting iron powder with the selenate in the presence of a nickel powder, which functions as a catalyst, to form selenite which is then adsorbed onto the iron oxide or iron oxyhydroxide.

IPC Classes  ?

• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 1/70 - Treatment of water, waste water, or sewage by reduction
• C02F 1/42 - Treatment of water, waste water, or sewage by ion-exchange
• C02F 9/00 - Multistage treatment of water, waste water or sewage
• C02F 101/10 - Inorganic compounds

Abstract

The present invention relates to a side stream deammonification process where deammonification is performed by a non-continuous flow integrated fixed film activated sludge sequencing batch reactor (IFAS SBR) without the need of employing an external clarifier. More particularly, the present invention entails a single reactor designed to operate as an IFAS SBR or a moving bed bioreactor (MBBR). With the design of the single tank, the two operation modes, MBBR and IFAS SBR, are interchangeable depending on the treatment needs.

IPC Classes  ?

• C02F 3/08 - Aerobic processes using moving contact bodies
• C02F 3/12 - Activated sludge processes
• C02F 3/30 - Aerobic and anaerobic processes

Abstract

The present invention relates to a side stream deammonification process where deammonification is performed by a non-continuous flow integrated fixed film activated sludge sequencing batch reactor (IFAS SBR) without the need of employing an external clarifier. More particularly, the present invention entails a single reactor designed to operate as an IFAS SBR or a moving bed bioreactor (MBBR). With the design of the single tank, the two operation modes, MBBR and IFAS SBR, are interchangeable depending on the treatment needs.

IPC Classes  ?

• C02F 3/12 - Activated sludge processes
• C02F 3/08 - Aerobic processes using moving contact bodies
• C02F 3/30 - Aerobic and anaerobic processes
• C02F 101/16 - Nitrogen compounds, e.g. ammonia

Abstract

Method for making surface water drinkable, which method is aimed at reducing the suspended matter content, turbidity, organic matter content and colour of the water, and is characterised in that it comprises: • a step of nanofiltering the water (2) through at least one nanofiltration membrane (2) which has a breakdown capacity between 800 Da and 2000 Da, preferably between 800 and 1000 Da, the nanofiltration step leading to the acquisition of a permeate (7) and a concentrate (5), • wherein the nanofiltration step is carried out with a conversion rate greater than 95%, • the method being carried out without any step of adding an anti-scaling agent or any step of remineralising the permeate.

IPC Classes  ?

• B01D 61/02 - Reverse osmosisHyperfiltration
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• B01D 61/04 - Feed pretreatment
• B01D 61/14 - UltrafiltrationMicrofiltration
• B01D 71/68 - PolysulfonesPolyethersulfones
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 1/78 - Treatment of water, waste water, or sewage by oxidation with ozone

Abstract

Method for making surface water drinkable, which method is aimed at reducing the suspended matter content, turbidity, organic matter content and colour of the water, and is characterised in that it comprises: a step of nanofiltering the water (2) through at least one nanofiltration membrane (2) which has a breakdown capacity between 800 Da and 2000 Da, preferably between 800 and 1000 Da, the nanofiltration step leading to the acquisition of a permeate (7) and a concentrate (5), wherein the nanofiltration step is carried out with a conversion rate greater than 95%, the method being carried out without any step of adding an anti-scaling agent or any step of remineralising the permeate.

IPC Classes  ?

• B01D 15/08 - Selective adsorption, e.g. chromatography
• B01D 61/14 - UltrafiltrationMicrofiltration
• B01D 61/16 - Feed pretreatment
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• C02F 1/78 - Treatment of water, waste water, or sewage by oxidation with ozone

Abstract

Installation for the pressurized filtration of liquid with a view to producing drinking water, comprising at least one membrane-based drinking-water production unit (MPU), each MPU comprising: a plurality of filtration blocks each containing a bundle of pressure tubes mounted in parallel, each pressure tube accommodating at least two membrane-based filtration modules with spiral membranes or hollow-fibre membranes mounted in series, means (20) for feeding the liquid that is to be filtered, means for removing the filtered liquid, and means (30) for removing the concentrate, characterized in that the membranes of the filtration modules are of at least two different types selected from the group consisting of reverse-osmosis membranes and low-pressure reverse-osmosis membranes (4-6), on the one hand, and nanofiltration membranes (1-3) on the other hand, and in that at least one MPU comprises means (21-26) making it possible to alter the order in which the blocks of pressure tubes that it groups together are supplied with fluid. The method consists in supplying the filtration blocks of at least one MPU in a first order of supply in which the tubes containing nanofiltration membranes are at the head of the MPU and then in supplying the pressure tubes in a second order of supply in which the pressure tubes containing reverse-osmosis membranes or low-pressure reverse-osmosis membranes are at the head of the MPU.

IPC Classes  ?

• B01D 61/58 - Multistep processes
• B01D 63/10 - Spiral-wound membrane modules
• B01D 61/12 - Controlling or regulating
• C02F 103/08 - Seawater, e.g. for desalination
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• B01D 63/02 - Hollow fibre modules
• B01D 61/02 - Reverse osmosisHyperfiltration

Abstract

A system for biologically treating wastewater comprising a rotating drum disposed within a tank. Biofilm carriers are contained in the drum. One or more hollow tube aerators are secured inside the drum to a perforated wall that forms a part of the drum. As the drum is rotated within the tank, the mixing of the biofilm carriers with the wastewater therein and the action of the hollow tubes aerates the wastewater in the rotating drum.

IPC Classes  ?

• C02F 3/08 - Aerobic processes using moving contact bodies
• C02F 3/10 - PackingsFillingsGrids
• C02F 3/00 - Biological treatment of water, waste water, or sewage

Abstract

A method for treating produced water in a system for treating wastewater is disclosed. The system includes a reverse osmosis unit for removing dissolved solids. The reverse osmosis unit produces a permeate and concentrate. To reduce the fouling potential of the membranes associated with the reverse osmosis unit and/or to increase membrane lifetime and/or to increase system recovery, at least a portion of the concentrate is recycled and mixed with the wastewater stream at a point upstream of the reverse osmosis unit.

IPC Classes  ?

• B01D 61/04 - Feed pretreatment
• B01D 65/08 - Prevention of membrane fouling or of concentration polarisation
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• C02F 103/10 - Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
• C02F 5/08 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
• B01D 61/02 - Reverse osmosisHyperfiltration
• B01D 61/06 - Energy recovery