A system and method are disclosed for control of feast and famine conditions in continuous-flow biological nutrient removal processes to drive intensification of the activated sludge wastewater treatment process. For control of feast conditions, an upfront anaerobic zone is equipped with a biosensor to monitor real-time soluble biodegradable carbon uptake rate. Readings from the biosensor are received in a controller, which makes adjustments to operation of the anaerobic zone when readings deviate beyond said threshold limits. In one aspect return activated sludge to the anaerobic zone is modulated via an automated flow control device. Famine conditions in downstream process zones are also monitored and controlled.
A METHOD AND APPARATUS FOR THE GENERATION OF COLLOIDAL GAS APHRONS (CGA) FOR THE REMOVAL AND CONCENTRATION OF PER- AND POLYFLUOROALKYL SUBSTANCES (PFAS)
PFAS (Per- and polyfluoroalkyl substances) contained in water are remediated by a process in which colloidal as aphrons (CGAs) are generated under shear and with surfactants, either added to the liquid or inherent in the PFAS. Preferably a pump is used to generate the CGAs, to move CGAs and liquid through the system, and to induce gas or air into the pump. The resulting foam that rises to the surface is comprised of various small bubbles, producing a very large surface area effective in attracting PFAS by surface adsorption, and when the foam is removed a small volume of liquid highly concentrated in PFAS can be efficiently destroyed by various known destruction techniques. The method is effective to remove PFOS.
01 - Chemical and biological materials for industrial, scientific and agricultural use
07 - Machines and machine tools
11 - Environmental control apparatus
37 - Construction and mining; installation and repair services
40 - Treatment of materials; recycling, air and water treatment,
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Chemicals for use in industry and science; chemicals for the treatment, processing and purifying of water, drinking water or waste water; chemical preparations in the nature of filtering materials used in water, drinking water and waste water.
(2) Water and wastewater processing machinery and equipment, namely, clarifiers, dissolved air flotators, aerators, sedimentation drivers, thickeners, travelling screens separators, digester covers, mixers, flocculators, trough skimmers, and rotary distributors.
(3) Regulating accessories for water supply, namely, appliances and installations for heating, steam generating, refrigerating, and ventilating of water supply; water purification units; water distillation units; water demineralization units; apparatus and installations for the treatment of surface water and artesian water to create drinking water or ultra-pure water; apparatus and installations for purifying household and industrial waste water; apparatus and installations for water treatment using reserve osmosis processes; filters as parts of household and industrial installations; apparatus and installations for filtering liquids, namely, water, drinking water and waste water; parts for the aforesaid equipment, apparatus and installations. (1) Repair and construction building and rebuilding services in the fields of water and wastewater processing facilities and equipment, namely, installation, start-up, maintenance, servicing and repair of apparatus and installations for the treatment, processing, purifying and recycling of water, drinking water and wastewater.
(2) Water treatment services; Water treatment and purification; rental of commercial water filters; rental of water purification equipment; wastewater treatment.
(3) Services for others in the fields of designing, planning, engineering, and implementation of project management of the treatment, processing, purifying and recycling of water, drinking water and waste water.
01 - Chemical and biological materials for industrial, scientific and agricultural use
07 - Machines and machine tools
11 - Environmental control apparatus
37 - Construction and mining; installation and repair services
40 - Treatment of materials; recycling, air and water treatment,
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Chemicals for use in industry and science; chemicals for the treatment, processing and purifying of water, drinking water or waste water; chemical preparations in the nature of filtering materials used in water, drinking water and waste water.
(2) Water and wastewater processing machinery and equipment, namely, clarifiers, dissolved air flotators, aerators, sedimentation drivers, thickeners, travelling screens separators, digester covers, mixers, flocculators, trough skimmers, and rotary distributors.
(3) Regulating accessories for water supply, namely, appliances and installations for heating, steam generating, refrigerating, and ventilating of water supply; water purification units; water distillation units; water demineralization units; apparatus and installations for the treatment of surface water and artesian water to create drinking water or ultra-pure water; apparatus and installations for purifying household and industrial waste water; apparatus and installations for water treatment using reserve osmosis processes; filters as parts of household and industrial installations; apparatus and installations for filtering liquids, namely, water, drinking water and waste water; parts for the aforesaid equipment, apparatus and installations. (1) Repair and construction building and rebuilding services in the fields of water and wastewater processing facilities and equipment, namely, installation, start-up, maintenance, servicing and repair of apparatus and installations for the treatment, processing, purifying and recycling of water, drinking water and wastewater.
(2) Water treatment services; Water treatment and purification; rental of commercial water filters; rental of water purification equipment; wastewater treatment.
(3) Services for others in the fields of designing, planning, engineering, and implementation of project management of the treatment, processing, purifying and recycling of water, drinking water and waste water.
01 - Chemical and biological materials for industrial, scientific and agricultural use
07 - Machines and machine tools
40 - Treatment of materials; recycling, air and water treatment,
11 - Environmental control apparatus
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Chemicals for use in industry and science; chemicals for the treatment, processing and purifying of water, drinking water or waste water; chemical preparations in the nature of filtering materials used in water, drinking water and waste water water and wastewater processing machinery and equipment, namely, clarifiers, dissolved air flotators, aerators, sedimentation drivers, thickeners, travelling screens separators, digester covers, mixers, flocculators, trough skimmers, and rotary distributors. Water treatment services; Water treatment and purification; rental of commercial water filters; rental of water purification equipment; wastewater treatment. regulating accessories for water supply, namely, appliances and installations for heating, steam generating, refrigerating, and ventilating of water supply; water purification units; water distillation units; water demineralization units; apparatus and installations for the treatment of surface water and artesian water to create drinking water or ultra-pure water; apparatus and installations for purifying household and industrial waste water; apparatus and installations for water treatment using reserve osmosis processes; filters as parts of household and industrial installations; apparatus and installations for filtering liquids, namely, water, drinking water and waste water; parts for the aforesaid equipment, apparatus and installations. repair and construction building and rebuilding services in the fields of water and wastewater processing facilities and equipment, namely, installation, start-up, maintenance, servicing and repair of apparatus and installations for the treatment, processing, purifying and recycling of water, drinking water and wastewater. engineering and design consulting services in the fields of water and water treatment processing facilities and equipment; scientific and technological services, namely, research and design in the fields of the treatment, processing, purifying and recycling of water, drinking water and waste water; consulting services for others in the fields of designing, planning, engineering, and implementation of project management of the treatment, processing, purifying and recycling of water, drinking water and waste water.
A system and method are disclosed for control of feast and famine conditions in continuous-flow biological nutrient removal processes to drive intensification of the activated sludge wastewater treatment process. For control of feast conditions, an upfront anaerobic zone is equipped with a biosensor to monitor real-time soluble biodegradable carbon uptake rate. Readings from the biosensor are received in a controller, which makes adjustments to operation of the anaerobic zone when readings deviate beyond said threshold limits. In one aspect return activated sludge to the anaerobic zone is modulated via an automated flow control device. Famine conditions in downstream process zones are also monitored and controlled.
A system and method are disclosed for control of feast and famine conditions in continuous-flow biological nutrient removal processes to drive intensification of the activated sludge wastewater treatment process. For control of feast conditions, an upfront anaerobic zone is equipped with a biosensor to monitor real-time soluble biodegradable carbon uptake rate. Readings from the biosensor are received in a controller, which makes adjustments to operation of the anaerobic zone when readings deviate beyond said threshold limits. In one aspect return activated sludge to the anaerobic zone is modulated via an automated flow control device. Famine conditions in downstream process zones are also monitored and controlled.
A system and method to control mixed liquor fermentation in a continuous-flow biological wastewater treatment process that removes organic matter, nitrogen and/or phosphorus provides for real-time adjustment of anaerobic solids retention time to initiate, optimize or cease mixed liquor fermentation in the anaerobic zone. Control is in response to signals from biological sensors monitoring microbial activity. Sufficient volatile fatty acids (VFAs) for the biological treatment process are generated endogenously, without bringing in sludge from primary sedementaiton or elsewhere. Efficiency of the process is increased, resulting in a smaller plant footprint requirement.
A system and method to control mixed liquor fermentation in a continuous-flow biological wastewater treatment process that removes organic matter, nitrogen and/or phosphorus provides for real-time adjustment of anaerobic solids retention time to initiate, optimize or cease mixed liquor fermentation in the anaerobic zone. Control is in response to signals from biological sensors monitoring microbial activity. Sufficient volatile fatty acids (VFAs) for the biological treatment process are generated endogenously, without bringing in sludge from primary sedementaiton or elsewhere. Efficiency of the process is increased, resulting in a smaller plant footprint requirement.
General electrotechnology equipment, namely, electro-oxidation, electro-coagulation, and electro-disinfection equipment; water and wastewater treatment and processing, PFAS removal, concentration, destruction and polishing equipment, machinery and systems for filtration, foam fractionation, electro-oxidation and adsorption.
(1) General electrotechnology equipment, namely, electro-oxidation, electro-coagulation, and electro-disinfection equipment; water and wastewater treatment processing, engineering, machinery, PFAS removal, concentration, destruction and polishing related equipment and systems, for filtration, foam fractionation, electro-oxidation and adsorption.
General electrotechnology equipment, namely, electro-oxidation, electro-coagulation, and electro-disinfection equipment; water and wastewater treatment processing, engineering, machinery, PFAS removal, concentration, destruction and polishing related equipment and systems, for filtration, foam fractionation, electro-oxidation and adsorption
14.
Acoustic Particle Counter for Nanoparticles in Liquids
In semiconductor manufacture requiring ultra high purity water, particles of specified sizes are detected using acoustic particle detection capable of detecting nanoparticles. A sensor unit receives a flow of water, with the pressure and rate of flow to the sensor controlled closely. In each sensor unit is a measurement cell to receive a continuous flow of water, with a transducer module engaged with the cell to deliver an acoustic pulse at a known level of intensity as the liquid flows through the cells, the acoustic pulse acting on the liquid at a focus zone to cause cavitation in the event a particle of size detectable at that intensity is present. A waveform emitter/receiver connected to the sensor unit sends high-frequency, high-voltage signal to the transducer module to cause the acoustic pulse, and it also receives a waveform echo indicating a cavitation event. The system is controlled by a microprocessor.
In semiconductor manufacture requiring ultra high purity water, particles of specified si zes are detected using acoustic particle detection capable of detecting nanoparticles. A sensor unit receives a flow of water, with the pressure and rate of flow to the sensor controlled closely. In each sensor unit is a measurement cell to receive a continuous flow of water, with a transducer module engaged with the cell to deliver an acoustic pulse at a known level of intensity as the liquid flows through the cells, the acoustic pulse acting on the liquid at a focus zone to cause cavitation in the event a particle of si ze detectable at that intensity is present. A waveform emitter/receiver connected to the sensor unit sends high-frequency, high-voltage signal to the transducer module to cause the acoustic pulse, and it also receives a waveform echo indicating a cavitation event. The system is controlled by a microprocessor.
PFAS (Per- and polyfluoroalkyl substances) contained in water are remediated by a process in which colloidal as aphrons (CGAs) are generated under shear and with surfactants, either added to the liquid or inherent in the PFAS. Preferably a pump is used to generate the CGAs, to move CGAs and liquid through the system, and to induce gas or air into the pump. The resulting foam that rises to the surface is comprised of various small bubbles, producing a very large surface area effective in attracting PFAS by surface adsorption, and when the foam is removed a small volume of liquid highly concentrated in PFAS can be efficiently destroyed by various known destruction techniques. The method is effective to remove PFOS.
A method for manufacturing wastewater filtration plates uses a flowable composition including pre-ceramic raw material. The flowable composition is extruded to form a thin plate preform. Carbon-containing material is included in the flowable composition and/or added to the surface of the thin plate perform during or after extrusion thereof. The carbon- containing material is preformed carbon filaments or carbon-fiber precursor material. The thin plate preform is subjected to elevated temperatures to convert the pre-ceramic raw material into porous ceramic with carbon filaments embedded therein or disposed on the surface of the finished ceramic plate.
A method for manufacturing wastewater filtration plates uses a flowable composition including pre-ceramic raw material. The flowable composition is extruded to form a thin plate preform. Carbon-containing material is included in the flowable composition and/or added to the surface of the thin plate perform during or after extrusion thereof. The carbon-containing material is preformed carbon filaments or carbon-fiber precursor material. The thin plate preform is subjected to elevated temperatures to convert the pre-ceramic raw material into porous ceramic with carbon filaments embedded therein or disposed on the surface of the finished ceramic plate.
B01D 24/00 - Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
B01D 39/20 - Other self-supporting filtering material of inorganic material, e.g. asbestos paper or metallic filtering material of non-woven wires
A dual drum screen system for wastewater has a first, inner drum positioned within a second, outer drum. Wastewater is filtered first by a filter screen of the inner drum, then by a finer filter screen of the outer drum. Both drums rotate together on a central shaft with a common drive system.
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
42 - Scientific, technological and industrial services, research and design
Goods & Services
Pump lift station units, namely, liquid pumps for liquid treatment units. pH adjustment units, namely, solution feeders for treating fluids by automatically injecting a predetermined concentration of acid or base solution for pH control. Apparatus and installations for the handling and treatment of industrial fluids, waste and wastewater, namely, biological deactivation units in the nature of thermal and chemical sterilization units for water treatment, heavy metal and fluoride removal units in the nature of water purification units, chemical and solvent collection units in the nature of wastewater collection tanks, chemical and solvent dispensing units in the nature of wastewater dispensing tanks, fluid cooling units for industrial purposes and associated parts, piping and controls in the nature of wastewater purification apparatus, installation and tanks. Engineering, design, installation, startup and commissioning consulting services in the fields of industrial fluid, waste and wastewater handling and treatment processing facilities, installations and apparatus
A sealing system for a covered tank, particularly a fixed gas-sealing tank in a wastewater treatment system, includes a thrust ring positioned just inside the tank rim, secured to a series of radial beams for the cover. Preferably supported on corbels anchored to the interior tank wall, the thrust ring has an outwardly extending generally horizontal flange that overlies the edge of the tank rim. To this flange and to the top of the tank rim is secured a flexible membrane seal, around the periphery of the tank. The membrane seal is easily installed, reliable as a seal, and can be efficiently replaced when needed.
A screening panel for an apparatus for removing solid material from a flowing liquid, where the screening panel is mountable to a conveyor of the apparatus for travel around an endless path passing into and out of the flowing liquid. The screening panel is molded from a polymeric material and provided with a plurality of apertures each extending through the screening panel from a first major surface to an opposing second major surface. The apertures each have a tapered hexagonal cross-section.
B01D 33/067 - Construction of the filtering drums, e.g. mounting or sealing arrangements
B01D 33/11 - Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
B01D 33/048 - Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are pervious for filtering with endless filtering bands
B01D 33/333 - Filters with filtering elements which move during the filtering operation with individual filtering elements moving along a closed path
Membranes for filtration of water; membranes for filtration
of water, namely filters for drinking water, filters for
waste water, filters for sludge water and filters for water
filtering units for domestic, commercial and industrial use.
A vertical motion mixer has a drive mechanism with two axes of guidance for vertical motion. A reciprocating yoke is fixedly secured to the driving shaft for the mixer, without any guide bearing for the mixer driving shaft. The mixer drive unit is of compact and simplified design with minimal moving parts, and including drive gearing with planetary gears to minimize wear during reciprocating movement.
B01F 31/00 - Mixers with shaking, oscillating, or vibrating mechanisms
B01F 31/441 - Mixers with shaking, oscillating, or vibrating mechanisms with stirrers performing an oscillatory, vibratory or shaking movement performing a rectilinear reciprocating movement
Silicon carbide flat sheet filtration membranes are supported on one piece manifold/end cap structures. Ends of a large number of the parallel flat plate membranes are fitted into elongated end cap slots that are part of a single molded manifold/end cap structure, such a structure being at each end of the series of membranes. In addition, a one piece external frame module can be provided to receive the gang of flat plate membranes with attached manifold/end caps. In the event of a damaged plate, the plate can be removed and replaced along with a special end cap repair section. This provides advantages over prior arrangements with individual end caps for each module or potting of the flat plates into a box or chamber.
(1) Membrane filtration units for water treatment apparatus; water filtering apparatus, namely, membrane modules for removing dissolved and suspended materials from liquids, and replacement cartridges and filters therefor
In a wastewater treatment process or other water treatment process, wherein ceramic membranes are employed to filter liquid not being treated in a biological process, ozone gas is injected and dissolved into the membrane influent for the purpose of preventing fouling of the membranes, while also enhancing pathogen removal. Ozone concentration as injected is at a concentration greater than 2 mg/l, preferably at least about 5 mg/l.
A liquid level control system, which may be used with a clarifier in a sewage treatment plant, manages liquid level of an upstream basin by controlling liquid flow in or out of a system that may use a midstream device to equally distribute flow in or out of the basin. This headloss inducing device creates a non-linear relationship between upstream liquid level to be controlled and the lesser downstream liquid level behind the gate or valve. Without the use of electrical controls, the systems of the invention include a gate or valve with counterforces that manage the outflow stream of liquid while accounting for the non-linear head loss created by the midstream device, thus reaching a desired liquid level range for all system flowrates.
G05D 9/00 - Level control, e.g. controlling quantity of material stored in vessel
E02F 5/10 - Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditchesDredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for making or assembling conduits or for laying conduits or cables
32.
Biomass selection and control for continuous flow granular/flocculent activated sludge processes
A continuous flow granular/flocculent sludge wastewater process selects for granule biomass capable of nitrogen and phosphorus removal and controls granule size and concentration of granular and flocculent sludge for optimal nutrient, organic, and solids removal in a smaller footprint. A series of biological process zones lead to a secondary clarifier. Mixed liquor sludge, preferably from an aerobic zone, goes through a classifier or separator processing flow from the aerobic zone, to the secondary clarifier. In a sidestream process that can be included a portion of sludge preferably from an aerobic zone goes through a classifier or separator to selectively produce a granular-rich effluent, and the clarifier may also have a separator to further concentrate granular biomass, most of which is cycled back to an initial multi-stage anaerobic process zone. The anaerobic zone is structured and operated to encourage growth of granules in subsequent process zones.
A continuous flow granular/flocculent sludge wastewater process selects for granule biomass capable of nitrogen and phosphorus removal and controls granule size and concentration of granular and flocculent sludge for optimal nutrient, organic, and solids removal in a smaller footprint. A series of biological process zones lead to a secondary clarifier. Mixed liquor sludge, preferably from an aerobic zone, goes through a classifier or separator processing flow from the aerobic zone, to the secondary clarifier. In a sidestream process that can be included a portion of sludge preferably from an aerobic zone goes through a classifier or separator to selectively produce a granular-rich effluent, and the clarifier may also have a separator to further concentrate granular biomass, most of which is cycled back to an initial multi-stage anaerobic process zone. The anaerobic zone is structured and operated to encourage growth of granules in subsequent process zones.
A continuous flow granular/flocculent sludge wastewater process selects for granule biomass capable of nitrogen and phosphorus removal and controls granule size and concentration of granular and flocculent sludge for optimal nutrient, organic, and solids removal in a smaller footprint. A series of biological process zones lead to a secondary clarifier. Mixed liquor sludge, preferably from an aerobic zone, goes through a classifier or separator processing flow from the aerobic zone, to the secondary clarifier. In a sidestream process that can be included a portion of sludge preferably from an aerobic zone goes through a classifier or separator to selectively produce a granular-rich effluent, and the clarifier may also have a separator to further concentrate granular biomass, most of which is cycled back to an initial multi-stage anaerobic process zone. The anaerobic zone is structured and operated to encourage growth of granules in subsequent process zones.
In a wastewater treatment system, a clarifier has a submerged effluent launder, with a sloped, submerged plate that allows clarified liquid to exit through submerged openings. The sloped surface tends to accumulate solids, which can lead to algae growth. Typical internal scum collection system equipment prevents any efficient way to clear the accumulated sludge off the launder surface because of interferences. As disclosed here, a scum discharge area or box is placed external to the clarifier in one embodiment. Scum is wiped from a vertical surface of the launder assembly, above the sloped launder surface, and swept over a scum beach at one position in the clarifier, to drop into a lower trough and the flow out through the clarifier wall to a drop out box or scum discharge area. This allows for a rake-attached, sweeping launder wiper to be moved with the clarifier's rake to remove the accumulation of sludge from the launder's submerged surface, without elaborate moving parts. The sludge is swept back to settle in the clarifier, improving effluent quality by preventing sludge from exiting along with clarified water. In another embodiment the scum discharge box is internal, as a low-profile vertically disposed channel against the inside clarifier wall, leading to an existing scum pipe through the clarifier wall.
In a municipal sewage treatment system, a biological process tank, typically an anaerobic digestion process, has a flexible, inflated membrane cover. At least one draft tube mixer is installed on the tank, interrupting the gas supported cover with a platform having a flat base and may have upwardly extending sides that generally follow the contour of the inflated cover. The draft tube is connected to the platform and preferably supported on the floor of the tank. The mixer mechanism can be lifted out of the draft tube without escape of gas from the inflated cover.
In a wastewater treatment plant a rag seeding tank is included in a process drain to collect hair and fibers which have passed through headworks of the plant. The hair and fibers tend to join together into large masses downstream of the headworks and can be damaging to process zones, particularly membrane zones. The rag seeding tank includes cartridges filled with surfaces that fibers and hair will attach to, so that hair/fiber rags grow in the seeding tank and are removed therefrom rather than causing problems downstream.
B01D 29/48 - Edge filtering elements, i.e. using contiguous impervious surfaces of spirally or helically wound bodies
B01D 29/56 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
B01D 29/60 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor integrally combined with devices for controlling the filtration
The invention relates to an apparatus for providing ultrapure water, in particular ultrapure water for use in semiconductor fabrication.
This apparatus comprises at least one cylindrical reactor with an inner cylindrical shell, an outer cylindrical shell and a channel-like volume between inner shell and outer shell.
said channel-like volume is provided for flowing water through the reactor.
wastewater treatment units consisting mainly of tanks, inclined plate settlers, fine bubble diffusers, air blowers, and associated pumps, electrical wiring and pipework, for the biological treatment of domestic and industrial wastewater
43.
System for monitoring operation of thickeners and clarifiers
A thickener/clarifier system includes a thickener/clarifier and one or more sensors measuring respective process or operating parameters of the thickener/clarifier(s) during operation thereof. The sensors are operatively coupled via hard-wired connections and possibly via 4-20 mA converters to one or more wireless transmitters. At least one wireless receiver receives the wireless signal(s) from the transmitter(s). At least one display is hard-wire coupled to the receiver(s) for displaying a magnitude of each process or operating parameter measured.
A split stabilizer bearing for a mast of a rotary distributor includes a split cylindrical housing, a split filament wound bushing, a plurality of polytetrafluoroethylene-coated carbon fiber ring seals, an annular split seal retainer, and multiple fasteners. The filament wound bushing is disposed inside the housing, along an inner surface thereof. The bushing has a backing layer of high-strength glass fiber and an inner sliding layer of polytetrafluoroethylene (PTFE) and polymer fiber, the two layers both embedded in a epoxy resin matrix. The carbon fiber ring seals are disposed on axially or longitudinally opposed sides of the bushing and along an inner side or surface of the cylindrical housing, preferably in respective annular recesses or offsets along the inner side or surface of the housing. The fasteners, nylon-patch locking screws or bolts, couple the bushing and the split seal retainer to the housing.
A continuous flow granular/flocculent sludge wastewater process selects for granule biomass capable of nitrogen and phosphorus removal and controls granule size and concentration of granular and flocculent sludge for optimal nutrient, organic, and solids removal in a smaller footprint. A series of biological process zones lead to a secondary clarifier. Mixed liquor sludge, preferably from an aerobic zone, goes through a classifier or separator processing flow from the aerobic zone, to the secondary clarifier. In a sidestream process that can be included a portion of sludge preferably from an aerobic zone goes through a classifier or separator to selectively produce a granular-rich effluent, and the clarifier may also have a separator to further concentrate granular biomass, most of which is cycled back to an initial multi-stage anaerobic process zone. The anaerobic zone is structured and operated to encourage growth of granules in subsequent process zones.
A clarifier of a wastewater treatment system is made more efficient and cost effective with an energy dissipating inlet (EDI) that removes the need for a conventional feedwell/EDI system. A central influent pipe has wastewater outlet ports under the liquid surface, the ports being surrounded by an efficient EDI surrounding the center pipe and extending outwardly therefrom. The EDI receives influent flow and directs the sludge outwardly and generally downwardly at reduced flow velocity. Series of baffles in the EDI help slow the flow velocity and disperse the sludge. In another embodiment a faucet-type EDI has discharge openings that disperse the sludge downwardly after it has flowed through sets of baffles above. Significant cost reductions in material and installation are realized by elimination of the conventional feedwell/EDI system.
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
portable laboratory sink that collects laboratory wastewater in an integrated tank and pumps it to a desired location using pre-programmed logic from the control panel enclosed underneath the sink portable sink that collects industrial and laboratory wastewater in an integrated tank and pumps it to a desired location using pre-programmed logic from the control panel enclosed underneath the sink
The invention relates to a method for treating fluoride-containing, in particular HF containing wastewater to remove fluoride and to a corresponding apparatus. In the new method calcium carbonate is reacted in a reaction step at an acidic pH≤4 with the fluoride in the wastewater to form calcium fluoride particles. Then, in a subsequent filtration step said calcium fluoride particles are separated by a porous membrane from the treated wastewater. The inventive apparatus comprises at least one reaction container/tank for reacting calcium carbonate at an acidic pH≤4 with fluoride in the wastewater to form calcium fluoride particles, as well as at least one porous membrane, in particular at least one porous ceramic membrane for separating calcium fluoride particles from the treated wastewater in a filtration step.
C04B 35/56 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides
C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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
B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus
C04B 35/565 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides based on silicon carbide
C02F 1/00 - Treatment of water, waste water, or sewage
Waste treatment machines that use heat or chemicals to kill living microorganisms, biological waste and cell waste generated by various industrial commercial manufacturing processes
37 - Construction and mining; installation and repair services
Goods & Services
Consulting services for the construction of water treatment and purification plants, solid waste treatment plants and other municipal infrastructure facilities
51.
Process aeration balance controller in wastewater treatment
An aeration balance controller in a wastewater treatment process allows for precise control of aeration medium in situations where the oxygen concentration must be controlled in more than one aeration zone or compartment, with reduced instrumentation. The system also has application controlling aeration media where the aeration of one or more zones may interfere with the stable control of aeration in another zone. This is accomplished by the use of two control schemes: one which determines the overall aeration effort required, and one or more controllers which adjust the balance between zones to equalize the process error from setpoint from zone to zone.
Combined Sewer Overflow (CSO) events require certain minimum treatment, before discharge, according to EPA regulations. However, these events are infrequent, and CSO treatment systems remain idle most of the time. Tertiary filtration is typically used to polish off the secondary treated water in order to remove suspended matter, phosphorous, etc. Tertiary systems are usually designed to handle design flows and remain active most of the time. These are two independent unit operations requiring major capital investment and operational expense. According to this invention an interchangeable system is able to switch a tertiary treatment reactor back and forth between two applications ensuring seamless operation, smooth transition and significant cost savings for treatment facilities.
A wastewater treatment system includes a biological treatment plant and an auxiliary, non-biological treatment plant. The auxiliary plant receives overflow, which can be sanitary sewer overflow, combined sewer overflow or strictly storm overflow. Treatment is by coagulation and membrane separation, removing most bacteria. Following treatment the outflow can be discharged to streams.
A submerged membrane unit has air diffusers located outside of the membrane area in plan view. The diffusers may be mounted in or below a diffuser case. The diffuser case may have walls to direct bubbles towards the membranes. The diffusers may be drop diffusers, for example as in a single drop diffuser assembly. The membrane unit may have polymeric or ceramic membranes, for example ceramic flat plate membranes. In an example, a rectangular shrouded membrane unit has a diffuser case below it that is rectangular in plan view but trapezoidal in side view, with drop diffusers located in the corners of the diffuser case. In a process of treating high strength wastewater, for example thickening or digesting waste sludge, a membrane unit optionally with ceramic plate membranes is immersed in the wastewater. The membranes are sparged with bubbles produced below but beside the membrane unit in a diffuser case.
In a hydraulic circuit including a ball circulation pump skid, a single pump, and a set of valves in a manifold of the ball circulation pump skid, the pump and valves are operated to move all fluid in the hydraulic circuit alternately along two paths through an operative device and a ball collection capsule in the manifold, so that none of the balls ever enter the pump. The first path enables (a) ball-containing fluid flow from the operative device to the ball collection capsule and (b) ball-free fluid flow from the ball collection capsule to the exactly one pump and back to the manifold. The second path provides for (c) ball-free fluid flow from the pump to the ball collection capsule and (d) ball-entraining flow from the ball collection capsule to the operative device.
B08B 9/057 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices being entrained discrete elements, e.g. balls, grinding elements, brushes
B08B 9/032 - Cleaning the internal surfacesRemoval of blockages by the mechanical action of a moving fluid, e.g. by flushing
B08B 3/10 - Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
A liquid level control system, which may be used with a clarifier in a sewage treatment plant, manages liquid level of an upstream basin by controlling liquid flow in or out of a system that may use a midstream device to equally distribute flow in or out of the basin. This headless inducing device creates a non- linear relationship between upstream liquid level to be controlled and the lesser downstream liquid level behind the gate or valve. Without the use of electrical controls, the systems of the invention include a gate or valve with counterforces that manage the outflow stream of liquid while accounting for the non- linear head loss created by the midstream device, thus reaching a desired liquid level range for all system flowrates.
37 - Construction and mining; installation and repair services
40 - Treatment of materials; recycling, air and water treatment,
Goods & Services
Water installations, apparatus and machines; parts and fittings for the aforesaid goods. Installation, maintenance and repair of water installations, apparatus and machines. Water treatment services.
58.
BIOMASS SELECTION AND CONTROL FOR CONTINUOUS FLOW GRANULAR/FLOCCULENT ACTIVATED SLUDGE PROCESSES
A continuous flow granular/flocculent sludge wastewater process selects for granule biomass capable of nitrogen and phosphorus removal and controls granule size and concentration of granular and flocculent sludge for optimal nutrient, organic, and solids removal in a smaller footprint. It includes anaerobic, anoxic, and aerobic process zones, a high soluble biodegradable COD loaded first reactor in anaerobic or anoxic zones, a granular sludge classifier with recycle of underflow granular sludge to the first reactor, a secondary clarifier to settle flocculent sludge and particulates and recycle of flocculent sludge from the secondary clarifier underflow to an aerobic process zone. Wasting of sludge from the two separate recycle lines controls the bioprocess flocculent and granular sludge concentrations and CRTs. Bypass around and recycle flow to the classifier to maintain desired flow under various influent flow conditions aid control of granule size. On/off mixer operation of anaerobic and anoxic reactors may be used.
A continuous flow granular/flocculent sludge wastewater process selects for granule biomass capable of nitrogen and phosphorus removal and controls granule size and concentration of granular and flocculent sludge for optimal nutrient, organic, and solids removal in a smaller footprint. It includes anaerobic, anoxic, and aerobic process zones, a high soluble biodegradable COD loaded first reactor in anaerobic or anoxic zones, a granular sludge classifier with recycle of underflow granular sludge to the first reactor, a secondary clarifier to settle flocculent sludge and particulates and recycle of flocculent sludge from the secondary clarifier underflow to an aerobic process zone. Wasting of sludge from the two separate recycle lines controls the bioprocess flocculent and granular sludge concentrations and SRTs. Bypass around and recycle flow to the classifier to maintain desired flow under various influent flow conditions aid control of granule size. On/off mixer operation of anaerobic and anoxic reactors may be used.
In a wastewater treatment system, a clarifier has a submerged effluent launder, with a sloped, submerged plate that allows clarified liguid to exit through submerged openings, The sloped surface tends to accumulate solids, which can lead to algae growth. Typical internal scum collection system eguipment prevents any efficient way to clear the accumulated sludge off the launder surface because of interferences. As disclosed here, a scum discharge area or box is placed external to the clarifier in one embodiment. Scum is wiped from a vertical surface of the launder assembly, above the sloped launder surface, and swept over a scum beach at one position in the clarifier, to drop into a lower trough and the flow out through the clarifier wall to a drop out box or scum discharge area, This allows for a rake- attached, sweeping launder wiper to be moved with the clarifier's rake to remove the accumulation of sludge from the launder's submerged surface, without elaborate moving parts. The sludge is swept back to settle in the clarifier, improving effluent guality by preventing sludge from exiting along with clarified water, In another embodiment the scum discharge box is internal, as a low- profile vertically disposed channel against the inside clarifier wall, leading to an existing scum pipe through the clarifier wall.
The invention relates to an apparatus for providing ultrapure water, in particular ultrapure water for use in semiconductor fabrication. This apparatus comprises at least one cylindrical reactor with an inner cylindrical shell, an outer cylindrical shell and a channel-like volume between inner shell and outer shell. According to the invention - said inner cylindrical shell houses at least one UV emission device, - said outer cylindrical shell comprises at least one means for reflecting UV radiation, and - said channel-like volume is provided for flowing water through the reactor.
In a water treatment system, which may be a wastewater treatment plant, a single-inlet drum screen is installed with its rotation axis perpendicular to the pattern of flow in a channel. Retrofitting of an existing screening system with a different form of screen, residing in an existing concrete channel is described.
F16K 3/06 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing facesPackings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages
37 - Construction and mining; installation and repair services
Goods & Services
Construction services, namely, installation of utilities in the nature of water and wastewater treatment systems for industrial and municipal buildings
A reciprocating motion disk for mixing wastewater in a tank of a treatment plan is optimized for geometry, along with cycling speed and stroke length, to cause effective mixing velocity throughout the tank.
The invention relates to a method for treating fluoride-containing, in particular HF containing wastewater to remove fluoride and to a corresponding apparatus. In the new method calcium carbonate is reacted in a reaction step at an acidic pH ≤ 4 with the fluoride in the wastewater to form calcium fluoride particles. Then, in a subsequent filtration step said calcium fluoride particles are separated by a porous membrane from the treated wastewater. The inventive apparatus comprises at least one reaction container/tank for reacting calcium carbonate at an acidic pH ≤ 4 with fluoride in the wastewater to form calcium fluoride particles, as well as at least one porous membrane, in particular at least one porous ceramic membrane for separating calcium fluoride particles from the treated wastewater in a filtration step.
Combined Sewer Overflow (CSO) events require certain minimum treatment, before discharge, according to EPA regulations. However, these events are infrequent, and CSO treatment systems remain idle most of the time. Tertiary filtration is typically used to polish off the secondary treated water in order to remove suspended matter, phosphorous, etc. Tertiary systems are usually designed to handle design flows and remain active most of the time. These are two independent unit operations requiring major capital investment and operational expense. According to this invention an interchangeable system is able to switch a tertiary treatment reactor back and forth between two applications ensuring seamless operation, smooth transition and significant cost savings for treatment facilities.
In a water treatment system, which may be a wastewater treatment plant, a single-inlet drum screen is installed with its rotation axis perpendicular to the pattern of flow in a channel. Retrofitting of an existing screening system with a different form of screen, residing in an existing concrete channel is described.
B01D 33/067 - Construction of the filtering drums, e.g. mounting or sealing arrangements
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 33/76 - Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging the filter cake, e.g. chutes
B01D 33/11 - Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
C02F 1/00 - Treatment of water, waste water, or sewage
69.
MEMBRANE WASTEWATER TREATMENT OF COMBINED SEWER OVERFLOWS AND SANITARY SEWER OVERFLOWS
A wastewater treatment system includes a biological treatment plant and an auxiliary, non-biological treatment plant. The auxiliary plant receives overflow, which can be sanitary sewer overflow, combined sewer overflow or strictly storm overflow. Treatment is by coagulation and membrane separation, removing most bacteria. Following treatment the outflow can be discharged to streams.
A submerged membrane unit has air diffusers located outside of the membrane area in plan view. The diffusers may be mounted in or below a diffuser case. The diffuser case may have walls to direct bubbles towards the membranes. The diffusers may be drop diffusers, for example as in a single drop diffuser assembly. The membrane unit may have polymeric or ceramic membranes, for example ceramic flat plate membranes. In an example, a rectangular shrouded membrane unit has a diffuser case below it that is rectangular in plan view but trapezoidal in side view, with drop diffusers located in the corners of the diffuser case. In a process of treating high strength wastewater, for example thickening or digesting waste sludge, a membrane unit optionally with ceramic plate membranes is immersed in the wastewater. The membranes are sparged with bubbles produced below but beside the membrane unit in a diffuser case.
In an ion-exchange separation system, a single regeneration column provides for separation of anion and cation resins and the regeneration of both cation and anion resins with a very low level of cross-contamination. After regeneration most of the anion layer in the column is withdrawn, and most of the cation layer is withdrawn, but a portion of each layer adjacent to the interface between the layers remains in the column, to isolate these cross-contaminated portions from the regenerated resins. The withdrawn, regenerated anion and cation resins are placed back into the working vessel.
Rapid removal of settled solids in secondary clarifiers is critical in sewage treatment plants having nutrient removal permits, especially phosphorus, to prevent solids from surfacing after going aerobic and releasing phosphorus. Release of phosphorus could impact the plant's permit limit. This is addressed by the described design of rake blade flights and squeegees that quickly move solids on the clarifier floor to the sludge pickup tubes, usually in one revolution. In a preferred form the blade flights are curved and may be spiral in shape, causing gathered sludge to advance outwardly toward the pickup tube at each flight, usually in one revolution. Previous blade flights included angled linear sections that progressively move the sludge in incremental movements with each revolution of the clarifier mechanism.
Underdrain units in a sand medium or dual medium filtration system include efficient air, water and combined air/water cleaning. Air, water or both are delivered in backflow direction from a very low position on the underdrain unit, as well as water from a higher position, so as to effectively remove blocking contaminants on the outside the underdrain unit and in the surrounding filter media.
In a sludge thickener water/wastewater treatment system, sludge solids are recirculated with a mixer positioned in the influent column or offset from the center column and within the stilling well, in order to produce essentially constant sludge solids concentration in the sludge withdrawn from the thickener. This solves the problem of thickeners producing inconsistent underflow solids concentration and often exhibiting problems with binding of rake arms due to sometimes very high sludge concentrations. Also, dewatering steps that follow thickening typically require a relatively constant solids concentration for efficient operation.
A clarifier in a wastewater treatment plant is provided with a submerged launder for effluent, the launder preferably having an integral density current baffle and scum baffle. In one embodiment an existing launder is modified, with its vertical leg replaced with a sloped plate defining launder conduit triangular in cross section, and with a sloping portion of the plate forming a density current baffle. Openings in the sloped plate permit entry of effluent liquid, and the liquid level in a clarifier is controlled without an overflow weir plate. In another form submerged pipe with entry holes serves as the launder, with support brackets integral with a density current baffle. A third form of the launder is a box formed beneath the shelf of an existing internal launder in the clarifier, again with a density current baffle extending down from the box. In another version an existing launder is covered and sealed, and holes are drilled through the launder wall to admit effluent. A submerged launder avoids problems of algae buildup and the need for algae sweeps or frequent cleaning of the launder.
The invention pertains to a process for in-situ regeneration of activated carbon loaded with trihalomethane (THM). Based on the invention, this is achieved with alkaline hydrolysis of the THM with increased temperatures within the activated carbon in halogen-free, good water-soluble, or gaseous compounds. After completion of the chemical hydrolysis treatment, the activated carbon is cleared of reagents and reaction products by rinsing with water and diluted acids, and is then available for reloading in the untreated water flow. During the entire cleaning process, the activated carbon bed must not be moved.
C02F 1/28 - Treatment of water, waste water, or sewage by sorption
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
A debris filter has a housing, a filter screen mounted to the housing and disposed so as to extend across a flow path through the housing, a debris extractor mounted to the housing, and a splitter bar also mounted to the housing. The debris extractor and the filter screen are so mounted to the housing as to enable rotation of the filter screen and the debris extractor relative to one another. The debris extractor has a debris intake opening and the debris extractor and the splitter bar are so mounted to the housing that the intake opening is positionable adjacent to or in juxtaposition with the splitter bar with the splitter bar overlapping and shielding the intake opening.
B01D 29/68 - Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
B01D 29/03 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with flat filtering elements self-supporting
In a wastewater treatment system, a suction duct clarifier is converted to a suction pipe clarifier without penetrating existing concrete at the base of the tank. An elevated sludge collection box is added, positioned on the center column to rotate with rake arms, and a series of sludge riser pipes extend from the rake arms up into the sludge collection box for sludge delivery by hydraulic pressure differential. A sludge discharge downpipe is provided within the center/influent column for delivery of sludge from the collection box, and at the bottom of this pipe, above the tank floor, the discharge pipe exits through an opening in the center/influent column. At the outside of this opening is a sludge transfer box that receives sludge exiting the discharge pipe and conveys it down through the existing floor opening and to the existing under-floor RAS return pipe.
In an ion-exchange separation system, a single regeneration column provides for separation of anion and cation resins and the regeneration of both cation and anion resins with a very low level of cross-contamination. After regeneration most of the anion layer in the column is withdrawn, and most of the cation layer is withdrawn, but a portion of each layer adjacent to the interface between the layers remains in the column, to isolate these cross- contaminated portions from the regenerated resins. The withdrawn, regenerated anion and cation resins are placed back into the working vessel.
An orbital wastewater treatment system includes a tank assembly, at least one impeller, at least one flow-diversion mechanism, at least one actuator, optionally at least one sensor disposed in the tank assembly, and a control unit. The tank assembly has three treatment zones and pairs of passages between the first zone and the second zone and between the second zone and the third zone. The impeller disposed in the tank assembly moves mixed liquor under process about the tank assembly. Multiple flow-diversion mechanisms disposed at the passages between the zones of each pair control process conditions pursuant to a predetermined schedule and/or at least partially in accordance with input from the one or more sensors.
Phagotrophic algae are used in connection with aerobic or anaerobic digestion of solids, especially waste activated sludge (WAS), to more efficiently digest solids and to meet, over a shorter period of time, volatile solids standards and specific oxygen uptake rate requirements as well as pathogen reduction requirements.
Phagotrophic algae are used in connection with aerobic or anaerobic digestion of solids, especially waste activated sludge (WAS), to more efficiently digest solids and to meet, over a shorter period of time, volatile solids standards and specific oxygen uptake rate requirements as well as pathogen reduction requirements.
In a sewage treatment plant with a membrane bioreactor (MBR), raw untreated or partially treated wastewater (influent) and/or mixed liquor in the intensified process is superoxygenated. In a preferred form of the process the influent is superoxygenated such that membrane air scouring requirements are reduced. Influent may be fed to a swing zone where denitrification and nitrification occur simultaneously through process control. In one embodiment superoxygenation is conducted in an internal recycle stream of the mixed liquor, with oxygen content supersaturated preferably to over 300 parts per million. Due to the active evolution of oxygen gas from the supersaturated stream, occurring preferably by seeding the supersaturated stream with air bubbles, the supersaturated oxygen can serve the dual purposes of meeting process oxygen demands and providing part of air scouring requirements for the membranes.
In a wastewater treatment plant a clarifier is fitted with piping and a pump to withdraw settled sludge from the bottom of the tank upwardly through the tank's center column and radially out from the clarifier via an exit pipe above the liquid level. The exit pipe can be supported on a fixed walkway. At the bottom end of the central tower is a manifold device for collecting settled sludge, including an annular preferably cylindrical wall, a central pipe hub and at least one pipe branch extending from an opening in the cylindrical wall radially inwardly to the central hub. Sludge is drawn up through a vertical sludge return pipe by a pump located preferably above the tank's liquid level, drawing sludge into pipe branches of the manifold device and through the hub to the sludge return pipe, then out through the exit pipe.
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Electronic control system comprised of computer hardware and software, for industrial wastewater treatment systems, for enabling real-time remote access to said systems for remote service, modification, and control of said systems Technical support services, namely, remote monitoring of functioning and use of electrical equipment, namely, industrial wastewater treatment computer and network systems
90.
Process for treating water with a counter-current ion exchange unit including silica and boron concentatration monitoring and regeneration thereof
A process is described for treating water, in particular for obtaining ultrapure water, in which a decationized water stream is passed at least through a first strong base anion exchange bed and a second strong base anion exchange bed, which is arranged downstream, in particular directly downstream, of the first strong base anion exchange bed. Furthermore, a water treatment system and a counter-current ion exchange unit for carrying out such a process are described.
C02F 1/42 - Treatment of water, waste water, or sewage by ion-exchange
B01J 49/85 - Controlling or regulating devices therefor
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
B01J 41/05 - Processes using organic exchangers in the strongly basic form
B01J 47/022 - Column or bed processes characterised by the construction of the column or container
B01J 49/07 - Regeneration or reactivation of ion-exchangersApparatus therefor of fixed beds containing anionic exchangers
A debris filter has a housing, a filter screen mounted to the housing and disposed so as to extend across a flow path through the housing, a debris extractor mounted to the housing, and a splitter bar also mounted to the housing. The debris extractor and the filter screen are so mounted to the housing as to enable rotation of the filter screen and the debris extractor relative to one another. The debris extractor has a debris intake opening and the debris extractor and the splitter bar are so mounted to the housing that the intake opening is positionable adjacent to or in juxtaposition with the splitter bar with the splitter bar overlapping and shielding the intake opening.
B01D 29/03 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with flat filtering elements self-supporting
B01D 29/68 - Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
92.
Orbital wastewater treatment system and associated method of operating an orbital wastewater treatment system
An orbital wastewater treatment system generally including a tank assembly and at least one impeller in the tank assembly for moving mixed liquor under process about the tank assembly is provided with an wastewater inflow sensor, an impeller power meter, and a control unit for periodically and incrementally varying impeller speed and weir height in order to reduce energy consumption. Operating such a wastewater treatment system comprises flowing mixed liquor or wastewater into a treatment pool in the tank assembly, rotating the impeller within the pool to move the mixed liquor or wastewater, and adjusting, in concert, a rate of rotation of the impeller and a level or depth of the pool to reduce a rate of energy usage per unit inflow volume while maintaining at least one process parameter such as dissolved oxygen content substantially constant at a given level in the pool.
09 - Scientific and electric apparatus and instruments
Goods & Services
Waste water treatment apparatus, namely, a standard skid-mounted industrial pH neutralization unit designed for pH neutralizing, or pH adjustment of industrial process waste water
94.
Filtration tank with serially connected horizontal screens
A wastewater filtration device, the device including a tank having end walls, a first screen rotationally mounted adjacent one tank end wall, and a second screen rotationally mounted adjacent the other tank end wall, adjacent the fine screen. The device further includes an inlet in one end wall adjacent the fine screen and into the fine screen, and an outlet in the other end wall adjacent the second screen and out of the second screen. A dividing wall is between the first screen and the second screen, so that water in the inlet flows into the first screen, and then through the first screen out into the tank, around the dividing wall, and then through the second screen into the outlet.
B01D 33/073 - Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration
B01D 33/067 - Construction of the filtering drums, e.g. mounting or sealing arrangements
B01D 33/11 - Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
B01D 33/42 - Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in series connection concentrically or coaxially
B01D 33/50 - Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
95.
Orbital wastewater treatment system, method of operating same, and kit for modifying an orbital wastewater treatment system
An orbital wastewater treatment system includes a tank assembly, at least one impeller, a flow-diversion mechanism, an actuator, optionally at least one sensor disposed in the tank assembly, and a control unit. The tank assembly has an anoxic zone and an aerobic zone and passages between the two zones. The impeller is disposed in the tank assembly for aeration and for moving mixed liquor under process about the tank assembly. The flow-diversion mechanism is disposed at at least one of the passages between the aerobic and the anoxic zone. The actuator is operatively connected to the gate for regulating the flow state or configuration thereof in response to a signal generated by the control unit at least partially pursuant to a predetermined schedule and/or at least partially in accordance with input from the sensor.
A biological wastewater treatment system includes an equalization tank for sending a defined first portion of the wastewater to a submerged membrane filter. When the quantity of the received wastewater exceeds the defined first portion, a second portion of wastewater, formed from the wastewater that exceeds the defined first portion, is sent to a filtration process. The filtration process includes adding a flocculating agent to the second portion entering filtration, filtering the second portion, thereby producing retentive waste including flocculated material, and then sending the retentive waste to the submerged membrane filter.
A multistage immersion type membrane separator includes a liquid air separator, the liquid air separator including an outlet tube, an inlet tube, and a skirt. The outlet tube is cylindrical and has a outlet tube diameter, and the inlet pipe has an inlet pipe diameter of less than the outlet tube diameter. The inlet pipe is attached to and in communication with the outlet tube so that a mixed flow of air and liquid passing through the inlet tube is introduced into the outlet tube and flows circumferentially around the inside of the outlet tube. The inlet pipe is attached to the cylindrical outlet tube so that the inlet pipe is perpendicular to the outlet tube. The outlet tube has two ends, one end being closed and the other end being open. The skirt is attached to the outlet tube and is concentric with the outlet tube. The skirt is attached to the closed end of the outlet tube, and extends to just past the point of attachment of the inlet tube to the outlet tube. The skirt also has two open ends, and one open end penetrates through the closed end of the outlet tube.
An orbital wastewater treatment system includes a tank assembly, at least one impeller, a flow-diversion mechanism, an actuator, optionally at least one sensor disposed in the tank assembly, and a control unit. The tank assembly has an anoxic zone and an aerobic zone and passages between the two zones. The impeller is disposed in the tank assembly for aeration and for moving mixed liquor under process about the tank assembly. The flow-diversion mechanism is disposed at least one of the passages between the aerobic and the anoxic zone. The actuator is operatively connected to the gate for regulating the flow state or configuration thereof in response to a signal generated by the control unit at least partially pursuant to a predetermined schedule and/or at least partially in accordance with input from the sensor.
01 - Chemical and biological materials for industrial, scientific and agricultural use
07 - Machines and machine tools
11 - Environmental control apparatus
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Chemicals used in industry and science; chemicals for the
treatment, processing and purifying of water, drinking water
or waste water; filtering materials (chemical preparations). Water and/or wastewater processing machinery and equipment,
particularly clarifiers, dissolved air flotation, aerators,
sedimentation drivers, thickeners, travelling screens,
digestor covers, mixers, flocculators, trough skimmers, and
rotary distributors. Apparatus for heating, steam generating, refrigerating,
drying, ventilating, water supply and sanitary purposes;
apparatus and installations for the treatment, processing,
purifying and recycling of water, drinking water and waste
water, including clarifiers, dissolved air flotation,
mechanical aerators, sedimentation drivers, thickeners,
travelling screens, digestor covers, mixers, flocculators,
trough skimmers, and rotary distributors, the aforesaid
apparatus and installations being in particular for the
pharmaceutical industry, the food and drink industries, for
the manufacture of wafers and microchips and for municipal
drinking water and waste water treatment; water purification
units; water distillation units; water demineralization
units; apparatus and installations for the treatment of
surface water and artesian water to create drinking water or
ultra-pure water; apparatus and installations for purifying
household and industrial waste water; apparatus and
installations for water treatment using reverse osmosis
processes; filters (parts of household and industrial
installations); apparatus and installations for filtering
liquids, in particular water, drinking water or waste water;
parts for the aforesaid equipment, apparatus and
installations. Repair and construction rebuilding services in the fields of
water and/or wastewater processing facilities and equipment,
installation, assembly, commissioning, maintenance,
servicing and repair of apparatus and installations for the
treatment, processing, purifying and recycling of water,
drinking water and wastewater. Engineering and design consulting services in the fields of
water and/or wastewater treatment processing facilities and
equipment; scientific and technological services and
research and design relating thereto, industrial analysis
and research services, project development, planning and
engineering, all the above-mentioned services in the field
of the treatment, processing, purifying and recycling of
water, drinking water and waste water.
100.
Wastewater treatment method and system with ozonation for microconstituent removal
In a sewage treatment system, microconstituents, including personal care products and pharmaceutical materials, often difficult to degrade biologically, are removed by supersaturating the untreated wastewater feed with ozone. This breaks down refractory microconstituents into more readily biodegradable materials, subsequently treated preferably in an activated sludge membrane bioreactor process. The oxygen byproduct of ozonation is utilized by feeding the oxygen into an aerobic part of the plant to meet a portion of the biological demand, thereby increasing efficiency of ozone use in the process.
