A liquid composition for improving the flowability and/or rheology of a coke slurry solution, comprising a lignosulfonate derivative, a surfactant and one or more synergistic additives, and methods of use thereof.
An iron or aluminum-ore based composite and method of preparing the composite by (a) contacting a plurality of iron or aluminum ore particles with at least one water-soluble binding polymer to form an agglomeration, and (b) forming a composite.
A method of improving effluent brine quality, the method (i) providing a mud wash solvent comprising a hydrocarbon having a specific gravity less than that of a desalter brine to be treated; and (ii) adding the mud wash solvent to a mud wash stream of a desalter system to provide a treated effluent brine.
C10G 31/08 - Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for by treating with water
C02F 1/26 - Treatment of water, waste water, or sewage by extraction
C02F 1/68 - Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
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
C10G 33/04 - De-watering or demulsification of hydrocarbon oils with chemical means
Provided herein are compositions and methods for scavenging metals in industrial aqueous and non-aqueous streams, wherein the compositions and methods comprise the use of an effective amount of reaction products of hydrocarbon sweetening processes, wherein the reaction products comprise products of the reaction of hydrogen sulfide and hydrogen sulfide scavengers.
C02F 1/68 - Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
B01J 20/22 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising organic material
C02F 101/20 - Heavy metals or heavy metal compounds
C02F 103/10 - Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
C02F 103/16 - Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
C02F 103/18 - Nature of the water, waste water, sewage or sludge to be treated from the wet purification of gaseous effluents
C02F 103/34 - Nature of the water, waste water, sewage or sludge to be treated from the chemical industry not provided for in groups
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
Stillage solids concentration methods are disclosed wherein a solids concentration aid is added to a process stream mixture in a corn to ethanol process. The solids concentration aid may comprise a cationic polymer coagulant or flocculant or both, a starch, based coagulant or flocculant or a biologically derived (i.e., plant or animal origin) coagulant or flocculant. Acrylamide / quaternary ammonium copolymers and homopolymeric polydiallyldimethyl ammonium chloride polymers are noteworthy examples of suitable solids concentration aids.
An antifouling dispersant composition having an alcohol polyoxyethylene (EO) ether (EO number 1-14), represented by the general formula
An antifouling dispersant composition having an alcohol polyoxyethylene (EO) ether (EO number 1-14), represented by the general formula
An antifouling dispersant composition having an alcohol polyoxyethylene (EO) ether (EO number 1-14), represented by the general formula
wherein R is an alkyl with about 3-20 carbon atoms; and n is 1-14.
C07C 7/20 - Use of additives, e.g. for stabilisation
C02F 5/10 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
C02F 103/02 - Non-contaminated water, e.g. for industrial water supply
C08G 65/00 - Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
(1) Water filtration apparatus; water purification apparatus; reverse osmosis membrane; reverse osmosis filtration units; membranes, filters, brackish water reverse osmosis filter elements, and apparatus for use in water filtration, process separation, drinking water and wastewater treatment applications; apparatus and installations for lighting, heating, cooling, steam generating, cooking, drying, ventilating, water supply and sanitary purposes
Water filtration apparatus; water purification apparatus; reverse osmosis membrane; reverse osmosis filtration units; membranes, filters, brackish water reverse osmosis filter elements, and apparatus for use in water filtration, process separation, drinking water and wastewater treatment applications; apparatus and installations for lighting, heating, cooling, steam generating, cooking, drying, ventilating, water supply and sanitary purposes; all as far as included in class 11.
Water filtration apparatus; water purification apparatus; reverse osmosis membrane; reverse osmosis filtration units; membranes, filters, brackish water reverse osmosis filter elements, and apparatus for use in water filtration, process separation, drinking water and wastewater treatment applications; apparatus and installations for lighting, heating, cooling, steam generating, cooking, drying, ventilating, water supply and sanitary purposes
14.
UNDERDRAIN FOR MEDIA VESSEL AND METHOD OF CLEANING
An underdrain system for a media pressure vessel has a set of removable pipe sections located between an external header and the bottom of a vessel. Septa extend upwards from the removable pipe sections into the vessel. The header is attached to the bottoms of the removable pipe sections. Each pipe section, and its associated septum, may be removed individually. To clean the vessel, after media is removed from the vessel the pipe sections are removed sequentially while the header remains otherwise attached to the vessel. While a pipe section is removed, its associated septum is removed so that solids can be removed from the annulus between the septum and the vessel. In this way, media can be cleaned from the annuli without moving the external header or entering the vessel.
A method of preventing fouling in a quench system or charge gas compressor of an ethylene plant comprising adding to the system and/or compressor a dispersant chemistry comprising an effective amount of a reaction product formed by reaction of reactants (A), (B), and (C), wherein (A) comprises an alkyl substituted phenol of the structure Formula (I), (B) comprises a polyamine of the structure, Formula (II), and (C) comprising an aldehyde of the structure, Formula (III).
C10G 75/04 - Inhibiting corrosion or fouling in apparatus for treatment or conversion of hydrocarbon oils, in general by addition of antifouling agents
16.
UNDERDRAIN AND SEPTA FOR MEDIA VESSEL AND METHOD OF CLEANING
An underdrain system for a media pressure vessel has a set of removable pipe sections located between an external header and the bottom of a vessel. Septa extend upwards from the removable pipe sections into the vessel by up to 16 inches. The septa may have diameters of 6 inches or more. The header is attached to the bottoms of the removable pipe sections. Each pipe section, and its associated septum, may be removed individually. To clean the vessel. after media is removed from the vessel the pipe sections are removed sequentially while the header remains otherwise attached to the vessel. While a pipe section is removed. its associated septum is removed so that solids can be removed from the annulus between the septum and the vessel. In this way. media can be cleaned from the annuli without moving the external header or entering the vessel.
An underdrain system for a media pressure vessel has a set of removable pipe sections located between an external header and the bottom of a vessel. Septa extend upwards from the removable pipe sections into the vessel. The header is attached to the bottoms of the removable pipe sections. To clean the vessel, the pipe sections are removed. While a pipe section is removed, its associated septum is removed so that solids can be removed from the annulus between the septum and the vessel. In this way, media can be cleaned from the annuli without moving the external header or entering the vessel. A cleaning mechanism includes an elongated member with a spray nozzle that may be moved within the vessel. The cleaning mechanism may be used to removed media adhered to the walls of the vessel, for example while the septa are removed.
A corrosion inhibiting composition for use in inhibiting the corrosion of the internal metallic surfaces of the equipment used in the processing of crude oil at temperatures between 350°F and 790°F comprising adding to the crude oil a corrosion inhibiting amount of a composition comprising (a) an organophosphorus chemistry; and (b) a dispersant chemistry.
C10G 7/10 - Inhibiting corrosion during distillation
C10G 75/02 - Inhibiting corrosion or fouling in apparatus for treatment or conversion of hydrocarbon oils, in general by addition of corrosion inhibitors
19.
METHOD FOR PRODUCING POLYMERS WITH LOW RESIDUAL ACRYLAMIDE AND APPLICATION THEREOF
Provided herein are methods of reducing a residual acrylamide monomer content present in an acrylamide-based polymer emulsion comprising adding a treatment agent to the acrylamide-based polymer emulsion. Further provided herein are methods of preparing an acrylamide-based emulsion polymer comprising polymerizing a mixture comprising acrylamide monomers to form an acrylamide-based polymer emulsion; and adding a treatment agent to the acrylamide-based polymer emulsion.
A treatment composition having anti-foulant and anti-corrosion properties is provided. The composition having a fatty amine and a diacid, where the diacid is a succinic acid or a linear saturated dicarboxylic acid having the formula: HO2C(CH2)nCO2H where n is a positive integer of at least 6. A method for treating dilution steam generator system is also provided.
Provided herein is a method of preparing a metal ion scavenger comprising adding an effective amount of a piperazine derivative to a polyamine and epihalohydrin condensation reaction. Further provided herein is a method of treating aqueous and non-aqueous streams comprising adding a metal ion scavenger prepared by adding an effective amount of a piperazine derivative to a polyamine and epihalohydrin condensation reaction to the aqueous and non-aqueous streams.
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
22.
FUNCTIONALIZED POLYMERS FOR THE REMOVAL OF SOLUBLE AND INSOLUBLE TRANSITION METALS FROM WATER
A functionalized polymeric composition having a backbone, and at least one compound having at least one thiol-functional group or at least one amino-functional group. A method of preparing a functionalized polymeric composition, the method (i) providing a backbone; and (ii) reacting the backbone with an amino-thiol compound to obtain a functionalized polymeric composition. A method for removing metals from an aqueous stream, the method (i) providing a functionalized polymeric composition; (ii) adding the functionalized polymeric composition to an aqueous stream comprising a plurality of metal contaminants; (iii) allowing the polymeric composition to react with the metal contaminants to form an insoluble complex; and (iv) allowing the insoluble complex to settle out of solution or remove the insoluble complex through filtration.
Wastewater with high ammonia concentration is pre-treated before discharging it into a wastewater treatment plant treating lower strength wastewater, for example an activated sludge plant treating municipal sewage. The high strength wastewater is pre-treated to oxidize ammonia by contact with a fixed film supported on gas transfer membranes in a membrane aerated biofilm reactor. The pre-treatment may be a batch or continuous process. The pre-treatment can be controlled to remove ammonia to about the point of material alkalinity depletion. One or more parameters such as alkalinity, pH, or membrane exhaust oxygen concentration can be monitored to determine if alkalinity depletion has occurred or is about to occur. In some examples, the high strength wastewater is blended with wastewater having less ammonia and more alkalinity, for example municipal sewage or primary effluent. In some examples, the high strength wastewater is a liquid fraction of one or more sludges.
A multistage nanofiltration (NF) system for filtering a solute from a feed solution where a downstream NF stage is more permissive to the solute than an upstream NF stage. In some examples. the nanofiltration system includes a plurality of nanofiltration stages in series, where each nanofiltration stage is more permissive to the solute than the nanofiltration stage that is immediately upstream.
B01D 61/00 - Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltrationApparatus, accessories or auxiliary operations specially adapted therefor
B01D 53/22 - 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 diffusion
A water treatment system has an ozonation unit (12), a biological sensor (16) and optionally a biological treatment unit (14). The biological sensor (16) measures the biodegradability of organic contaminants after ozonation. The biological sensor (16) may be a bio-electrochemical sensor that produces an electrical signal related to the metabolic activity of bacteria on an electrode of the sensor. The biological sensor (16) may be connected to a controller (18) adapted to adjust one or more operating parameters of the ozonation unit (12) or the biological treatment unit (16) or both. A method of treating water, and a method of controlling a water treatment process, using a biological sensor to measure the biodegradability of water are further described. The measurement may be used to adjust an upstream ozonation process or a downstream biological treatment process. The systems and methods may be used to remove refractory organic compounds or organic micro-pollutants from secondary or tertiary effluent from a municipal or industrial wastewater plant.
A composition for corrosion control in aqueous systems, the composition providing a formulation of a concentrated aluminum corrosion inhibitor; and (i) a polycarboxylic acid polymer, (ii) a sulfonic acid polymer, (iii) a combination of a polycarboxylic acid and a polysulfonic acid, (iv) an organic phosphonate, (v) a combination of a phosphonate and a polycarboxylic acid, or (vi) a combination of a phosphonate and a polysulfonic acid. A method for corrosion control in aqueous systems, the method providing a concentrated formulation, the concentrated formulation having an aluminum corrosion inhibitor and (i) a polycarboxylic acid polymer, (ii) a sulfonic acid polymer, (iii) a combination of a polycarboxylic acid and a polysulfonic acid, (iv) an organic phosphonate, (v) a combination of a phosphonate and a polycarboxylic acid, or (vi) a combination of a phosphonate and a polysulfonic acid; and delivering the concentrated formulation to an aqueous stream.
C23F 11/18 - Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using inorganic inhibitors
C02F 5/10 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
C02F 5/14 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
C02F 103/02 - Non-contaminated water, e.g. for industrial water supply
29.
SYSTEM AND METHOD OF NON-PRESSURIZED SAMPLE CONVEYANCE
Various implementations include a system and methods for capture and transfer of a liquid sample from a process to a sample analysis device. In particular, a sample of fluid can be contained in a non-pressurized line and first and second air-operated valves may prevent the fluid from flowing through the line. A third air-operated valve may be positioned on a stub-out of the non-pressurized line between the first and second air-operated valves. A sample line, also configured to contain a sample of the fluid, can extend between the third air-operated valve and a sample analysis device to transfer the sample of fluid to the sample analysis device. A first pneumatic valve can control air flow to the first and second air-operated valves; a second pneumatic valve can control air flow to the third air-operated valve; and a third pneumatic valve can control low-pressure air injected into the sample line.
Various implementations include a reversible flow sampler including a housing, a housing cover, and a shuttle. The housing defines a sampler chamber with an inlet and an outlet, a first opening, and a second opening. The shuttle is movably disposed within the housing and coupled to the housing cover. The shuttle has a first shuttle position and a second shuttle position. In the first shuttle position, the shuttle fluidly connects the first opening with the sample chamber inlet and fluidly connects the second opening with the sample chamber outlet. In the second shuttle position, the shuttle fluidly connects the second opening with the sample chamber inlet and fluidly connects the first opening with the sample chamber outlet.
2322n22n 22n3144) alkyl, R5 is hydroxy substituted alkyl or alkylene having from 1 to 6 carbon atoms or a monomer comprising non-ionic hydroxyl groups selected from the group consisting of PEG-OH and others having 1 to 10 repeats; wherein c and d are positive integers; and e is a non-negative integer.
C02F 5/10 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
A product and method for reducing fouling of a vinyl aromatic monomer including a first composition comprising an effective amount of one or more dispersants and a second composition comprising an effective amount of one or more polymerization inhibitors, an effective amount of one or more polymerization retarders, or combinations thereof.
C23F 11/10 - Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
C02F 5/10 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
Provided herein are methods for real-time monitoring of one or more industrial fluids for ionic species that involve analyzing a sample of the one or more industrial fluids using a system including a capillary electrophoresis device and a processor; detecting, by way of a detector, one or more ionic species in the sample; and generating, in real-time, by way of the processor, an ionic species data profile for the sample.
A method of minimizing popcorn polymer seed formation, the method adding a treatment composition to a monomer containing system. A method for inhibiting popcorn polymer growth, the method adding a treatment composition to a monomer containing system, wherein the treatment composition comprises a quinone methide, a quinone methide derivative, or a quinone methide analogue based compound, and wherein the system comprises popcorn seed or polymer.
The present disclosure provides an electrodialysis stack that may be used for the treatment of an electrically conductive solution. The stack includes two electrodes (at least one is a recessed electrode), a plurality of ion-transport membranes and stack spacers. The membranes and spacers are arranged between the electrodes to define electrodialysis cell pairs. The stack includes an electrically insulated zone that extends substantially from a distribution manifold past the recessed edge of the electrode and substantially from the recessed electrode to the opposite electrode for a distance that is about 8% to 100% of the total distance between the electrodes. The overlap distance that the electrically insulated zone extends past the recessed edge of the electrode is calculated as:
The present disclosure provides an electrodialysis stack that may be used for the treatment of an electrically conductive solution. The stack includes two electrodes (at least one is a recessed electrode), a plurality of ion-transport membranes and stack spacers. The membranes and spacers are arranged between the electrodes to define electrodialysis cell pairs. The stack includes an electrically insulated zone that extends substantially from a distribution manifold past the recessed edge of the electrode and substantially from the recessed electrode to the opposite electrode for a distance that is about 8% to 100% of the total distance between the electrodes. The overlap distance that the electrically insulated zone extends past the recessed edge of the electrode is calculated as:
distance in cm=(0.062 cm−1)*(exp(−60/total cp)*(area in cm2 of the manifold ducts of the concentrated stream at the recessed edge)+/−10%.
An immersed membrane cassette has a high tank intensity achieved by one or more of: reduced module to module gap; using structural hollow tubing in at least parts of a frame in place of separate permeate and/or air pipes; and, using vertical permeate port connections. The cassette has a tank intensity over 650 m2/m2. The cassette may be combined with a fine screen. This specification also describes an immersed membrane module having a permeate port and/or connector on the top of a header. The permeate connection between the module and a permeate collection tube may be vertical, i.e. perpendicular to the length of the header. A piston seal may be used between the permeate port of the header and the permeate collection tube. The permeate collection tube may be a horizontal structural member on the periphery of a frame that holds the module.
A method for cleaning a water filtration membrane, the method having at least an alkaline cleaning step, wherein the method includes a first enzyme solution comprising a polypeptide having carbohydrase activity, and a second enzyme solution comprising a polypeptide having protease activity.
A method for inhibiting polymerization, gum formation and fouling of an atypical, high temperature ethylene fractionation train comprising treating the atypical, high temperature ethylene fractionation train with a composition including effective amounts of one or more quinone methides of the formula (I) wherein R1, R2, and R3 are independently selected from the group consisting of H, —OH, —SH, —NH2, alkyl, cycloalkyl, heterocyclo, and aryl; or one or more phenylene diamines, optionally, in combination with one or more hindered phenols.
Wastewater is treated though primary treatment of the water by way of a micro-sieve to produce a primary effluent and primary sludge. There is secondary treatment of the primary effluent by way of a membrane bioreactor (MBR) or an integrated fixed film activated sludge (IFAS) reactor to produce a secondary effluent and a waste activated sludge. The micro-sieve may have openings of 250 microns or less, for example about 150 microns. In a process, a gas transfer membrane is immersed in water. Pressurized air flows into the gas transfer membrane. An exhaust gas is withdrawn from the gas transfer membrane and used to produce bubbles from an aerator immersed in the water.
A wireless gateway is provided that is adapted to receive output data from a variety of connected devices such as pumps from a variety of different manufacturers. The gateway connects to each pump associated with an end user using a wired or wireless connection. The gateway receives output data from a pump in a first format that is specific to the type of pump or the manufacturer of the pump. The gateway then converts the output data into a second format based on knowledge about the type or manufacturer of the pump. The gateway then provides output data in the second format to a platform accessible by a service provider and the end user. The output data may be provided through a wired or wireless connection (e.g., cellular connection) between the gateway and a cloud-based platform used by the end user.
Fluid filtration apparatus, namely, membranes, filters, and filter elements for use in water filtration and fluid filtration for water
wastewater, oil and gas, dairy, food, beverage, minerals, pharmacological, medical, mining, and metallurgy separation processes
44.
MONITORING AND CONTROL OF UNWANTED POLYMER BY-PRODUCT GENERATED IN MONOMERS PRODUCTION, STORAGE, AND HANDLING USING INFRARED SPECTROSCOPY ANALYSIS
A method for monitoring and controlling unwanted polymer byproduct generated in a monomer production, storage, or handling process, for example polystyrene in a styrene production process, is described. The method comprises receiving a sample (115) taken during a monomer production process by a Fourier-Transform infrared spectrometer (120), performing an infrared spectroscopy analysis on the sample to generate spectral data (122) by the Fourier-Transform infrared spectrometer, and determining a percentage (119) of at least one polymer in the sample by mathematical correlative processing of the spectral data by a computing device (110).
G01N 21/3563 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solidsPreparation of samples therefor
45.
PROCESS FOR MANAGING WORMS IN MEMBRANE AERATED BIOFILM
An overgrowth of worms can reduce the effluent quality of a membrane aerated biofilm reactor. A method of controlling the growth of worms in a membrane aerated biofilm includes discontinuing all oxygen sources to a tank containing the biofilm and fluid flows flow into the tank. The tank is maintained in this idle condition for a period of time sufficient to kill at least some of the worms living in the biofilm. The method may be applied periodically to inhibit the formation of an excessive population of worms or retroactively to reduce an already excessive population of worms.
A by-pass control sleeve has circumferential protrusions along its outer surface. The protrusions of the by-pass control sleeve may be distributed along the length of the sleeve with constant diameter sections of the sleeve therebetween. The protrusions may be asymmetrical and/or may have a steep and/or concave curved forward face. A method of making a by-pass control sleeve comprises molding the protrusions on an outer surface of the sleeve. A method of installing the by-pass control sleeve comprises sliding the sleeve onto an end of a spiral wound membrane element. A combination of the by-pass control sleeve fixed to the spiral wound membrane element may be installed in a pressure housing.
The present disclosure provides a method for reducing or removing azole-based compounds from a wastewater, such as a semiconductor wastewater. The method includes adding a solution comprising transition metal (II) ions to a wastewater that includes an azole compound; and allowing the transition metal (II) ions and the azole compound in the wastewater to form a transition metal-azole complex in the wastewater. The transition metal ions may be Cu2+ions and/or Zn2+ ions.
The present disclosure provides a wastewater treatment system that includes at least one bioreactor tank growing a biomass therein. A nanofiltration, ultrafiltration, or microfiltration membrane is housed in the bioreactor tank. The membrane is in fluid communication with a liquid outlet to discharge a permeated-effluent. The membrane may be operated to filter a biologically-treated wastewater without substantially filtering the biomass growing in the bioreactor tank. For example, permeation through the membranes may be implemented only when the biomass is settled and the membranes are exposed to a substantially clear wastewater above the settled biomass. Alternatively, or in addition, the bioreactor tank may include a non-permeated-effluent outlet, and both non-permeated-effluent and membrane-permeated effluent may be produced simultaneously.
A diesel fuel composition having a diesel fuel blend and at least one additive is provided. A method for reducing biodiesel fuel filter blocking tendency (FBT) is provided, the method adding at least one fuel additive to a diesel fuel blend to obtain a diesel fuel composition. A method for reducing biodiesel fuel filter blocking tendency (FBT) is provided, the method adding a fuel additive combination to a diesel fuel blend to obtain a diesel fuel composition
C10L 1/196 - Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds derived from monomers containing a carbon-to-carbon unsaturated bond and a carboxyl group or salts, anhydrides or esters thereof
C10L 1/197 - Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds derived from monomers containing a carbon-to-carbon unsaturated bond and an acyloxy group of a saturated carboxylic or carbonic acid
C10L 1/222 - Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond
C10L 1/232 - Organic compounds containing nitrogen containing nitrogen in a heterocyclic ring
C10L 1/233 - Organic compounds containing nitrogen containing nitrogen in a heterocyclic ring containing nitrogen and oxygen in the ring, e.g. oxazoles
C10L 1/238 - Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
C10L 1/2383 - Polyamines or polyimines, or derivatives thereof
C10L 1/196 - Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds derived from monomers containing a carbon-to-carbon unsaturated bond and a carboxyl group or salts, anhydrides or esters thereof
C10L 1/197 - Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds derived from monomers containing a carbon-to-carbon unsaturated bond and an acyloxy group of a saturated carboxylic or carbonic acid
C10L 1/222 - Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond
C10L 1/232 - Organic compounds containing nitrogen containing nitrogen in a heterocyclic ring
C10L 1/233 - Organic compounds containing nitrogen containing nitrogen in a heterocyclic ring containing nitrogen and oxygen in the ring, e.g. oxazoles
C10L 1/238 - Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
C10L 1/2383 - Polyamines or polyimines, or derivatives thereof
A device for analyzing total organic carbon (TOC) within a fluid at a desired temperature can include one or more transfer modules, each including a first and second transfer plate. A first fluid channel is formed in the first transfer plate and a second fluid channel is formed in the second transfer plate. A CO2 permeable membrane is disposed between the first fluid channel and the second fluid channel and a temperature measurement device measures a temperature of a fluid within the first and/or second fluid channel. A temperature control system is configured to heat or cool the transfer plates. Heating or cooling the transfer plates heats or cools the fluid within the first and/or second fluid channel to the desired temperature. One or more conductivity sensors are configured to measure a conductivity of the fluid within the first and/or second fluid channel.
A cord for supporting a biofilm has a plurality of yarns. At least one of the yarns comprises a plurality of hollow fiber gas transfer membranes. At least one of the yarns extends along the length of the cord generally in the shape of a spiral. Optionally, one or more of the yarns may comprise one or more reinforcing filaments. In some examples, a reinforcing yarn is wrapped around a core. A module may be made by potting a plurality of the cords in at least one header. A reactor may be made and operated by placing the module in a tank fed with water to be treated and supplying a gas to the module. In use, a biofilm covers the cords to form a membrane biofilm assembly.
A method to reduce or eliminate N-heterocycles, the method providing one or more environmentally benign chelators (EBCs) to an aqueous cooling system, the aqueous cooling system having at least one N-heterocycle in the presence of a halogenating or non-halogenating oxidizer. A method to reduce or eliminate AOX, the method providing one or more environmentally benign chelators (EBCs) to an aqueous cooling system, the aqueous cooling system having at least one AOX-containing species in the presence of a halogenating biocide.
C02F 1/68 - Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
C02F 5/10 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
C23F 11/10 - Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
C02F 1/72 - Treatment of water, waste water, or sewage by oxidation
A method of processing brine comprising lithium. The method may include providing a feed brine and a draw brine to a first forward osmosis (FO) module, the feed brine and/or the draw brine comprising lithium, and forming a feed brine concentrate and a dilute draw brine; and providing the dilute draw brine to a first nanofiltration (NF) module, and forming a first NF retentate, at least a portion of which is optionally recycled to the FO module, and forming a first NF permeate comprising at least a portion of the lithium. The method may additionally include providing a first brine to an initial NF module that is upstream of the first FO module, and forming the feed brine that is provided to the FO module, and forming an initial NF retentate, at least a portion of which is optionally recycled to the first FO module and/or the first NF module.
C22B 3/22 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means
B01D 61/00 - Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltrationApparatus, accessories or auxiliary operations specially adapted therefor
A composition providing a copper-carboxylic acid complex, the copper-carboxylic acid complex having a molar ratio of copper (Cu) to carboxylic acid that is between 1:0.1 and 1:1.5; and an asphalt composition. A method for scavenging hydrogen sulfide from asphalt, the method providing a composition comprising a copper-carboxylic acid complex having a molar ratio of copper (Cu) to carboxylic acid of the copper-carboxylic acid complex is between 1:0.1 and 1:1.5; and adding the composition to an asphalt composition.
Stillage solids concentration methods are disclosed wherein a solids concentration aid is added to a process stream mixture in a corn to ethanol process. The solids concentration aid may comprise a cationic polymer coagulant or flocculant or both, a starch based coagulant or flocculant or a biologically derived (i.e., plant or animal origin) coagulant or flocculant. Acrylamide/quaternary ammonium copolymers and homopolymeric polydiallyldimethyl ammonium chloride polymers are noteworthy examples of suitable solids concentration aids.
An iron or aluminum-ore based composite and method of preparing the composite by (a) contacting a plurality of iron or aluminum ore particles with at least one water-soluble binding polymer to form an agglomeration, and (b) forming a composite.
A spiral wound membrane module is suitable for use with high temperature water that may also have a high pH, for example steam injection produced water. The module uses a membrane with a polyphenylene sulfide (PPS) backing material. The feed spacer of the module may be made from polyphenylene sulfide (PPS) or ethylene chlorotrifluoroethylene (ECTFE). The permeate carrier may be made of a woven nylon (i.e. nylon 6, 6) fabric coated with high temperature epoxy. The core tube and anti-telescoping device may be made of polysulfone. In some examples, the module may be used at a temperature of up to 130° C. Optionally, the module may be used at a pH of 9.5 or more. In a filtration method, the module may be operated at a pressure in the range of 150 to 450 psi. The module may be operated at a generally constant pressure.
This specification describes membrane based filtration and softening systems and methods. A system has a microfiltration or ultrafiltration (MF/UF) membrane unit upstream of a nanofiltration or reverse osmosis (NF/RO) membrane unit, optionally with no intermediate tank. In some cases, the system and method may be used with feed water provided at municipal line pressure to the membranes. NF/RO permeate is collected in a tank and then pumped to a header. Treated water may be drawn from the header for use or recycled to the system, for example to backwash or flush one or both of the membrane units. In a combined process, NF/RO permeate flushes the feed side of the NF/RO unit and then backwashes the MF/UF unit. In another process, the MF/UF unit and NF/RO unit are filled with NF/RO permeate before being placed in a standby mode.
A method for inhibiting melanoidin formation in a yeast propagation process, the method provides for adding a treatment composition to a molasses substance present in a yeast propagation process, wherein the treatment composition comprises a lecithin. A composition for a yeast propagation process, the composition having a lecithin, and a molasses substance.
A method for inhibiting melanoidin formation in a yeast propagation process, the method provides for adding a treatment composition to a molasses substance present in a yeast propagation process, wherein the treatment composition comprises a lecithin. A composition for a yeast propagation process, the composition having a lecithin, and a molasses substance.
Devices and methods are disclosed for determination of conductivity without inorganic carbon contribution in aqueous process streams. In particular, devices and methods for determining the ionic conductivity of aqueous process streams containing dissolved CO2.
G01N 27/27 - Association of two or more measuring systems or cells, each measuring a different parameter, where the measurement results may be either used independently, the systems or cells being physically associated, or combined to produce a value for a further parameter
G01N 27/333 - Ion-selective electrodes or membranes
A spiral wound membrane module has a brackish water RO or NF membrane combined with a permeate carrier having a narrow spacing between membrane contacting elements. The membrane may have water permeability (A-Value) of at least 8*10−5 cm/s/bar at 25° C. The membrane may have salt diffusion rate (B-Value) of at least 0.5*10−5 cm/s at 25° C. The permeate carrier may have a density of 54 wales per inch or more of a gap between adjacent ribs of 215 um or less. The permeate carrier may have a channel cross-sectional area of 16*10−9 m2 or more. Water is fed to the module at a high feed pressure, for example a pressure of at least 50 bar, optionally up to 120 bar. Retentate may be discharged at a concentration of 100 g/L, 130 g/L, or 150 g/L or more.
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
C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
67.
UNDERDRAIN AND SEPTA FOR MEDIA VESSEL AND METHOD OF CLEANING
An underdrain system for a media pressure vessel has a set of removable pipe sections located between an external header and the bottom of a vessel. Septa extend upwards from the removable pipe sections into the vessel by up to 16 inches. The septa may have diameters of 6 inches or more. The header is attached to the bottoms of the removable pipe sections. Each pipe section, and its associated septum, may be removed individually. To clean the vessel, after media is removed from the vessel the pipe sections are removed sequentially while the header remains otherwise attached to the vessel. While a pipe section is removed, its associated septum is removed so that solids can be removed from the annulus between the septum and the vessel. In this way, media can be cleaned from the annuli without moving the external header or entering the vessel.
B01D 24/14 - Downward filtration, the container having distribution or collection headers or pervious conduits
B01J 8/02 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with stationary particles, e.g. in fixed beds
B08B 9/02 - Cleaning pipes or tubes or systems of pipes or tubes
An underdrain system for a media pressure vessel has a set of removable pipe sections located between an external header and the bottom of a vessel. Septa extend upwards from the removable pipe sections into the vessel. The header is attached to the bottoms of the removable pipe sections. Each pipe section, and its associated septum, may be removed individually. To clean the vessel, after media is removed from the vessel the pipe sections are removed sequentially while the header remains otherwise attached to the vessel. While a pipe section is removed, its associated septum is removed so that solids can be removed from the annulus between the septum and the vessel. In this way, media can be cleaned from the annuli without moving the external header or entering the vessel.
C02F 1/00 - Treatment of water, waste water, or sewage
C02F 1/28 - Treatment of water, waste water, or sewage by sorption
B01J 8/02 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with stationary particles, e.g. in fixed beds
B08B 9/02 - Cleaning pipes or tubes or systems of pipes or tubes
An underdrain system for a media pressure vessel has a set of removable pipe sections located between an external header and the bottom of a vessel. Septa extend upwards from the removable pipe sections into the vessel. The header is attached to the bottoms of the removable pipe sections. To clean the vessel, the pipe sections are removed. While a pipe section is removed, its associated septum is removed so that solids can be removed from the annulus between the septum and the vessel. In this way, media can be cleaned from the annuli without moving the external header or entering the vessel. A cleaning mechanism includes an elongated member with a spray nozzle that may be moved within the vessel. The cleaning mechanism may be used to removed media adhered to the walls of the vessel, for example while the septa are removed.
C02F 1/00 - Treatment of water, waste water, or sewage
B08B 9/093 - Cleaning of containers, e.g. tanks by the force of jets or sprays
C02F 1/28 - Treatment of water, waste water, or sewage by sorption
B01J 8/02 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with stationary particles, e.g. in fixed beds
B08B 9/02 - Cleaning pipes or tubes or systems of pipes or tubes
An underdrain system for a media pressure vessel has a set of removable pipe sections located between an external header and the bottom of a vessel. Septa extend upwards from the removable pipe sections into the vessel. The header is attached to the bottoms of the removable pipe sections. Each pipe section, and its associated septum, may be removed individually. To clean the vessel, after media is removed from the vessel the pipe sections are removed sequentially while the header remains otherwise attached to the vessel. While a pipe section is removed, its associated septum is removed so that solids can be removed from the annulus between the septum and the vessel. In this way, media can be cleaned from the annuli without moving the external header or entering the vessel.
B01D 24/14 - Downward filtration, the container having distribution or collection headers or pervious conduits
B01J 8/02 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with stationary particles, e.g. in fixed beds
B08B 9/02 - Cleaning pipes or tubes or systems of pipes or tubes
An underdrain system for a media pressure vessel has a set of removable pipe sections located between an external header and the bottom of a vessel. Septa extend upwards from the removable pipe sections into the vessel. The header is attached to the bottoms of the removable pipe sections. To clean the vessel, the pipe sections are removed. While a pipe section is removed, its associated septum is removed so that solids can be removed from the annulus between the septum and the vessel. In this way, media can be cleaned from the annuli without moving the external header or entering the vessel. A cleaning mechanism includes an elongated member with a spray nozzle that may be moved within the vessel. The cleaning mechanism may be used to removed media adhered to the walls of the vessel, for example while the septa are removed.
B01D 24/14 - Downward filtration, the container having distribution or collection headers or pervious conduits
B01J 8/02 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with stationary particles, e.g. in fixed beds
B08B 9/02 - Cleaning pipes or tubes or systems of pipes or tubes
An underdrain system for a media pressure vessel has a set of removable pipe sections located between an external header and the bottom of a vessel. Septa extend upwards from the removable pipe sections into the vessel by up to 16 inches. The septa may have diameters of 6 inches or more. The header is attached to the bottoms of the removable pipe sections. Each pipe section, and its associated septum, may be removed individually. To clean the vessel, after media is removed from the vessel the pipe sections are removed sequentially while the header remains otherwise attached to the vessel. While a pipe section is removed, its associated septum is removed so that solids can be removed from the annulus between the septum and the vessel. In this way, media can be cleaned from the annuli without moving the external header or entering the vessel.
C02F 1/00 - Treatment of water, waste water, or sewage
B08B 9/093 - Cleaning of containers, e.g. tanks by the force of jets or sprays
C02F 1/28 - Treatment of water, waste water, or sewage by sorption
B01J 8/02 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with stationary particles, e.g. in fixed beds
B08B 9/02 - Cleaning pipes or tubes or systems of pipes or tubes
This specification describes a membrane aerated biofilm reactor (MABR) and processes for nitritation, nitritation-denitritation or deammonification. The supply of oxygen through the gas-transfer membrane is limited to suppress the growth of nitrite oxidizing bacteria (NOB). Exhaust gas from an MABR unit may have an oxygen concentration of 4% or less. The process can optionally include one or more of: intermittent (batch) feed of process air; process air modulation; process air direction reversal; process air recycle; and, process air cascade flow. The process can optionally include adding a seed sludge containing anammox to a reactor, optionally after pre-treatment and selection. The process can optionally include pre-seeding an MABR media.
A treatment composition having anti-foulant and anti-corrosion properties is provided. The composition having a fatty amine and a diacid, where the diacid is a succinic acid or a linear saturated dicarboxylic acid having the formula: HO2C(CH2)nCO2H where n is a positive integer of at least 6. A method for treating dilution steam generator system is also provided.
C02F 5/12 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
C23F 11/02 - Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in air or gases by adding vapour phase inhibitors
C23F 11/10 - Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
C23F 11/10 - Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
C02F 5/12 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
C23F 11/02 - Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in air or gases by adding vapour phase inhibitors
C23F 14/02 - Inhibiting incrustation in apparatus for heating liquids for physical or chemical purposes by chemical means
A synergistic anti-scaling composition, the composition having a scale inhibitor; and a compatibility aid. A synergistic anti-scaling composition, the composition having a scale inhibitor combination, the combination providing (i) a polymer composition, and (ii) a phosphonate composition. A synergistic anti-scaling composition, the composition having a scale inhibitor combination providing (i) a polymer composition, and (ii) a phosphonate composition and a compatibility aid. A method for inhibiting scale formation, the method providing a synergistic anti-scaling composition, the composition having a scale inhibitor, and a compatibility aid; and providing the synergistic anti-scaling composition to an aqueous scaling environment.
An apparatus has a plurality of gas transfer membranes. The apparatus floats in water with the membranes submerged in the water. To treat the water, a gas is supplied to the membranes and is transferred to a biofilm supported on the membranes or to the water. Gas is also used to supply mixing or membrane scouring bubbles to the water. The mixing or scouring bubbles can be provided by a cyclic aeration or other gas supply system, which optionally provides gas at a variable pressure to the membranes in parallel or series with an aerator. Condensates can be removed from the membranes, and exhaust gasses from the membranes can be monitored, optionally through one or more dedicated pipes.
B01F 23/237 - Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
B01F 101/00 - Mixing characterised by the nature of the mixed materials or by the application field
C02F 103/06 - Contaminated groundwater or leachate
79.
CARBON MEASUREMENTS IN AQUEOUS SAMPLES USING OXIDATION AT ELEVATED TEMPERATURES AND PRESSURES CREATED BY RESISTIVE HEATING
Apparatus and methods for measuring the concentrations of organic and inorganic carbon, or of other materials in aqueous samples are described, having a reactor that is resistively heated by passing an electric current through the reactor.
G01N 21/3504 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
G01N 1/44 - Sample treatment involving radiation, e.g. heat
G01N 1/42 - Low-temperature sample treatment, e.g. cryofixation
G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups
B01L 3/00 - Containers or dishes for laboratory use, e.g. laboratory glasswareDroppers
80.
Method for minimizing fouling, corrosion, and solvent degradation in low-temperature refinery and natural gas processes
A method of oxygen scavenging, the method (i) providing an oxygen scavenger composition; and (ii) adding the oxygen scavenger composition to an aqueous feed and/or a hydrocarbon feed of a hydrocarbon processing system.
C10G 75/02 - Inhibiting corrosion or fouling in apparatus for treatment or conversion of hydrocarbon oils, in general by addition of corrosion inhibitors
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
C02F 1/20 - Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
C02F 1/68 - Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
C10G 75/04 - Inhibiting corrosion or fouling in apparatus for treatment or conversion of hydrocarbon oils, in general by addition of antifouling agents
Systems and methods use ion exchange to extract lithium from a lithium-containing feed solution such as a salar brine. Lithium ions are loaded into an ion exchange resin and then eluted while recharging the resin. Sodium hydroxide or sodium bicarbonate may be used to recharge the resin but are not directly mixed with the lithium-containing feed solution. An eluate stream is produced containing lithium hydroxide or lithium bicarbonate. Lithium hydroxide can be precipitated as lithium hydroxide or in a hydrate form. Lithium bicarbonate may be converted to lithium carbonate. The system and method optionally includes processing an eluate stream to recover one or more compounds for re-use in regenerating the resin bed.
C22B 3/42 - Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
B01J 39/05 - Processes using organic exchangers in the strongly acidic form
B01J 47/10 - Ion-exchange processes in generalApparatus therefor with moving ion-exchange materialIon-exchange processes in generalApparatus therefor with ion-exchange material in suspension or in fluidised-bed form
B01J 47/026 - Column or bed processes using columns or beds of different ion exchange materials in series
B01J 49/10 - Regeneration or reactivation of ion-exchangersApparatus therefor of moving beds
An antifoulant composition for a gas processing plant, the composition having a phosphonothioic ester; a non-ionic surfactant; and a film forming surfactant. A method for inhibiting fouling in a gas processing plant, the method (a) providing an antifoulant composition; and (b) adding the antifoulant composition to a hydrocarbon stream present in a gas processing plant.
C09K 8/524 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
C10G 75/04 - Inhibiting corrosion or fouling in apparatus for treatment or conversion of hydrocarbon oils, in general by addition of antifouling agents
A multistage nanofiltration (NF) system for filtering a solute from a feed solution where a downstream NF stage is more permissive to the solute than an upstream NF stage. In some examples, the nanofiltration system includes a plurality of nanofiltration stages in series, where each nanofiltration stage is more permissive to the solute than the nanofiltration stage that is immediately upstream.
A multistage nanofiltration (NF) system for filtering a solute from a feed solution where a downstream NF stage is more permissive to the solute than an upstream NF stage. In some examples, the nanofiltration system includes a plurality of nanofiltration stages in series, where each nanofiltration stage is more permissive to the solute than the nanofiltration stage that is immediately upstream.
Verification plates for a bacterial endotoxin reader are provided, namely a temperature verification plate (TVP) and optical verification plate (OVP). The TVP has a body configured to be placed on a spindle of said reader and rotated by said spindle. The body has a temperature verification circuit with a temperature sensor and a temperature indicator. The temperature sensor is configured to measure a temperature of the body rotated by the spindle of the reader. The temperature indicator optically represents a value of the temperature measured by the temperature sensor. The temperature indicator is readable by an optical bench of the reader. The OVP has a body with a plurality of apertures located along a periphery that line up with an optical bench of the reader. Light produced by a light source of the reader can pass through the aperture and an intensity measured by a photodetector of the reader.
B01L 3/00 - Containers or dishes for laboratory use, e.g. laboratory glasswareDroppers
G01K 13/08 - Thermometers specially adapted for specific purposes for measuring temperature of moving solid bodies in rotary movement
G01K 3/04 - Thermometers giving results other than momentary value of temperature giving mean valuesThermometers giving results other than momentary value of temperature giving integrated values in respect of time
A water treatment system has an ozonation unit (12), a biological sensor (16) and optionally a biological treatment unit (14). The biological sensor (16) measures the biodegradability of organic contaminants after ozonation. The biological sensor (16) may be a bio-electrochemical sensor that produces an electrical signal related to the metabolic activity of bacteria on an electrode of the sensor. The biological sensor (16) may be connected to a controller (18) adapted to adjust one or more operating parameters of the ozonation unit (12) or the biological treatment unit (16) or both. A method of treating water, and a method of controlling a water treatment process, using a biological sensor to measure the biodegradability of water are further described. The measurement may be used to adjust an upstream ozonation process or a downstream biological treatment process. The systems and methods may be used to remove refractory organic compounds or organic micro-pollutants from secondary or tertiary effluent from a municipal or industrial wastewater plant.
A water treatment system has an ozonation unit (12), a biological sensor (16) and optionally a biological treatment unit (14). The biological sensor (16) measures the biodegradability of organic contaminants after ozonation. The biological sensor (16) may be a bio-electrochemical sensor that produces an electrical signal related to the metabolic activity of bacteria on an electrode of the sensor. The biological sensor (16) may be connected to a controller (18) adapted to adjust one or more operating parameters of the ozonation unit (12) or the biological treatment unit (16) or both. A method of treating water, and a method of controlling a water treatment process, using a biological sensor to measure the biodegradability of water are further described. The measurement may be used to adjust an upstream ozonation process or a downstream biological treatment process. The systems and methods may be used to remove refractory organic compounds or organic micro-pollutants from secondary or tertiary effluent from a municipal or industrial wastewater plant.
This specification describes systems and methods for removing a quaternary ammonium hydroxide, such as tetramethylammonium hydroxide (TMAH), from wastewater. The systems and methods may be located onsite at an electronics manufacturing and produce a TMAH solution for reuse. The system includes a membrane filtration unit, an ion exchange unit and an electrodialysis unit, for example a three-compartment electrodialysis unit. The process includes filtering wastewater to preferentially remove contaminants other than the quaternary ammonium hydroxide. The filtered water is treated through ion exchange to produce a regeneration stream with an increased concentration of quaternary ammonium cations. The regeneration stream is treated through electrodialysis to form a quaternary ammonium hydroxide solution.
C02F 9/00 - Multistage treatment of water, waste water or sewage
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
Provided herein are methods for real-time monitoring of one or more industrial fluids for ionic species that involve analyzing a sample of the one or more industrial fluids using a system including a capillary electrophoresis device and a processor; detecting, by way of a detector, one or more ionic species in the sample; and generating, in real-time, by way of the processor, an ionic species data profile for the sample.
Provided herein are methods for real-time monitoring of one or more industrial fluids for ionic species that involve analyzing a sample of the one or more industrial fluids using a system including a capillary electrophoresis device and a processor; detecting, by way of a detector, one or more ionic species in the sample; and generating, in real-time, by way of the processor, an ionic species data profile for the sample.
An antiscalant composition, the composition having a silica inhibitor composition, and a dispersant composition. A method for inhibiting scale formation in a membrane system, the method providing an antiscalant composition, the antiscalant composition having a silica inhibitor and a dispersant, and adding the antiscalant composition to an aqueous stream of an aqueous system.
C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
C02F 5/14 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
99.
HOLLOW FIBER IMMERSED MEMBRANE MODULE AND CASSETTE WITH HIGH PACKING DENSITY AND VERTICAL PERMEATE PORT CONNECTIONS
An immersed membrane cassette has a high tank intensity achieved by one or more of: reduced module to module gap; using structural hollow tubing in at least parts of a frame in place of separate permeate and/or air pipes; and, using vertical permeate port connections. The cassette has a tank intensity over 650 m2/m2. The cassette may be combined with a fine screen. This specification also describes an immersed membrane module having a permeate port and/or connector on the top of a header. The permeate connection between the module and a permeate collection tube may be vertical, i.e. perpendicular to the length of the header. A piston seal may be used between the permeate port of the header and the permeate collection tube. The permeate collection tube may be a a horizontal structural member on the periphery of a frame that holds the module.
A high salinity feed water such as seawater is treated to produce a reverse osmosis (RO) concentrate and an RO permeate. Optionally, some or all of the RO concentrate may be filtered to produce a nanofiltration (NF) permeate. Optionally, some feed water can also be filtered to produce NF permeate without first being concentrated by RO treatment. The NF permeate, or a blend of the RO permeate and NF permeate, may be used to produce a product water for injection into an oil-bearing reservoir to enhance oil recovery. Optionally, the product water may have salinity greater than the feedwater, or at least 30 g/L. The product water may have hardness of less than 20 mg/L.
