Systems and methods for treating activated carbon used in treatment of water and wastewater containing PFAS are disclosed. A vapor phase granular activated carbon (GAC) column or an internal combustion engine may be fluidly connected downstream of a thermal oxidation process to polish a vapor phase effluent associated with reactivation.
Disclosed are a system and method for the generation of hydrogen from a source of liquid comprising water. The system comprises a high fluid velocity electrolyzer comprising an inlet and an outlet, the inlet of the high fluid velocity electrolyzer fluidly connected to the source of liquid, and a gas fractionation system fluidly connected to the outlet of the high fluid velocity electrolyzer.
A conditioning system for a filter module is disclosed. The conditioning system may generally include an inlet, a heat exchanger, a magnetically levitated pump, a channel provided to bypass the heat exchanger, a controller, an outlet, and a base. The system may have components lined with corrosion-resistant materials. A method of conditioning a filter module is also disclosed. The method may generally include measuring TOC in a source of ultrapure water, heating the ultrapure water, rinsing a filter module with the heated water, flushing the filter module with ambient temperature water, and repeating the rinsing with heated water and flushing with ambient temperature water. A method of facilitating conditioning of the filter module is also disclosed. The method may generally include providing a portable filter module conditioning system and providing instructions for installation or use.
Modified activated carbon is disclosed for use in water treatment. In at least some embodiments, activated carbon may be treated with a positively-charged surfactant, i.e. a quaternary ammonium-based surfactant, to promote the removal of poly- and perfluoroalkyl substances from water.
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 system for the treatment of phosphate-containing wastewater comprises a pretreatment subsystem including a mixing chamber configured to mix a potassium-based salt with the wastewater to precipitate K2SiF6 from the wastewater, a solids-liquid separator to separate the precipitated K2SiF6 from the wastewater and form a pretreated wastewater, and a mixing chamber to dilute the pretreated wastewater with raw wastewater, and a filtration subsystem including a first filtration configured to receive the pretreated wastewater and remove particles to form a first effluent, a second filtration unit remove divalent ions from the first effluent and form a second effluent, and a third filtration unit configured to remove additional dissolved solids from the second effluent and form a third effluent suitable for discharge to the environment.
Systems and methods for treating water containing PFAS are disclosed. Plasma activated excited gas is encapsulated with nanobubbles in water comprising PFAS to be treated. Liquid-phase reaction of the PFAS with the encapsulated plasma activated excited gas at the air-water interface of the nanobubbles is promoted. The PFAS can be concentrated upstream of the plasma reactor. A foam fractionation process may be used in conjunction with the plasma reactor to facilitate PFAS removal.
Evoqua Water Technologies Limited (United Kingdom)
Inventor
Griffis, Joshua
Dukes, Simon P
Beddoes, Paul
Rogers, Peter G
Abstract
An electrochlorination system comprises a source of feed fluid, a product fluid outlet, and a plurality of electrochemical cells connected fluidically between the source of feed fluid and the product fluid outlet. The system is configured to operate at least one of the plurality of electrochemical cells at one of a first current density or a first flow rate, and to operate another of the plurality of electrochemical cells at a second current density or second flow rate different from the respective first current density or first flow rate.
Systems and methods for recovering ammonia from an aqueous solution are disclosed. The systems include a plurality of modules arranged in series, each module having a plurality of membranes, each membrane having a lumen side and a shell side. The plurality of modules include a lead module having a shell inlet fluidly connected to a source of the aqueous solution, an end module having a lumen inlet fluidly connected to a source of an acidic solution, and an optional intermediate module positioned between the lead module and the end module. The methods include directing the aqueous solution to the lead module and directing the acidic solution to the end module to produce an effluent and a product containing ammonium.
A method of separating perfluoroalky l and/or polyfluoroalkyl substances (PFAS) from water contaminated with at least one perfluoroalkyl and/or polyfluoroalkyl substance and containing dissolved solids. At least one non-polar solvent and/or polar aprotic solvent is added and mixed into the contaminated water to form a solvent/water solution. The water is separated from the solvent/water solution. The at least one perfluoroalkyl and/or polyfluoroalkyl substance migrates to the at least one non-polar solvent and/or polar aprotic solvent and the dissolved solids crystallize during mixing of the solvent/water solution and/or separation of the water. The precipitated solids are separated from the at least one non-polar solvent and/or polar aprotic solvent containing the at least one perfluoroalkyl and/or polyfluoroalkyl substance. Also, further subjecting the at least one non-polar organic solvent and/or polar aprotic organic solvent containing the at least one perfluoroalkyl and/or polyfluoroalkyl substance to supercritical water oxidation (SCWO).
An apparatus for diffusing wastewater into a clarifier is disclosed. The apparatus has a rotationally symmetric hollow body having a plurality of flow distributors positioned about a perimeter of the rotationally symmetric hollow body and a baffle extending around a bottom end portion of the rotationally symmetric hollow body. The apparatus is dimensioned to fit within an influent well of the clarifier and be connectable to the clarifier on a top end portion of the rotationally symmetric hollow body. A wastewater treatment system including a clarifier and the apparatus is disclosed. A method of retrofitting a circular clarifier by providing the apparatus is also disclosed.
A method of treating water in a water treatment system comprises introducing water to be treated into the water treatment system to produce a defined quantity of treated water having a defined quality metrics, receiving data indicative of one or more operating parameters of one or more unit operations of the water treatment system, determining a probability that the water treatment system will be able to produce and maintain production of treated water meeting the defined quality and the defined quantity metrics based on the received data, generating a risk assessment score based on the probability, and displaying the risk assessment score to a user.
G06Q 10/04 - Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
A water purification system is disclosed which, includes a reverse osmosis (RO) system or component that is connectable to a city or other outside water feed that is capable of responding to and compensating for low or no feed water pressure coming into the RO system to ensure the outgoing supply of purified water is provided consistently and at a minimum water pressure. This can be accomplished without the need for communication with another device or system-wide facility, such as a hospital, or a pharmaceutical or semiconductor manufacturing system, requiring a constant water supply.
A method for removing one or more azoles from wastewater of a semiconductor production facility includes obtaining copper from the wastewater and introducing an oxidizer into the wastewater to produce hydroxyl radicals from the oxidizer to react with the one or more azoles, wherein the copper catalyzes the production of the hydroxyl radicals from the oxidizer.
A method for removing organic compounds from a copper-containing solution includes producing the copper-containing solution from a mixture of wastewater from a copper chemical mechanical polishing (CMP) operation of a semiconductor manufacturing facility and a concentrated copper waste stream (CCW) from the semiconductor manufacturing facility, and introducing an oxidizer into the copper-containing solution, the copper catalyzing production of hydroxyl radicals from the oxidizer that react with the organic compounds.
Systems for water treatment are disclosed. The systems include a housing, at least one endblock dimensioned to be positioned within the housing, and a gasket having a face and a lip extending from the face, the face dimensioned to be positioned between the endblock and an active area of the water treatment, and the lip dimensioned to be positioned over an outer edge of the endblock adjacent to the housing to form a seal. The system also includes an o- ring dimensioned to be positioned between the lop and an internal side of the housing. The gasket and o-ring are rated in operation to withstand a static pressure of at least up to 100 psi.
B01D 65/00 - Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
C02F 1/469 - Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
16.
HIGH FLUID VELOCITY CELL DESIGN FOR THE ELECTROCHEMICAL GENERATION OF HYDROGEN AND CARBON DIOXIDE
Apparatuses for the generation of carbon dioxide and hydrogen from a water having a carbonate species are disclosed. The apparatus includes an anodic compartment having an anode disposed on a first side of the anodic compartment and a cathodic compartment having a cathode disposed on a first side of the cathodic compartment. The apparatus further includes a first cation permeable fluidic separator disposed on a second side of the anodic compartment and a second cation permeable fluidic separator disposed on a second side of the cationic compartment. A center compartment is defined between the first cation permeable fluidic separator and the second cation permeable fluidic separator. The apparatus further includes a flow control system configured to independently control flow of water through each of the anodic compartment, the cathodic compartment, and the center compartment. Methods of generating hydrogen, carbon dioxide, and oxygen from seawater using the apparatus are also disclosed.
C25B 1/04 - Hydrogen or oxygen by electrolysis of water
C25B 9/21 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof with diaphragms two or more diaphragms
Systems for water desalination are disclosed. The systems include a source of non-potable water, a low pressure nanofiltration device, a first electrodialysis unit, a second electrodialysis unit, and recycle conduits. Methods of water desalination including directing non-potable water to a low pressure nanofiltration device, a first electrodialysis unit, and a second electrodialysis unit are also disclosed. Methods of facilitating water desalination by providing a water desalination system are also disclosed.
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
A method of treating wastewater from a renewable fuel production comprises anaerobically digesting the wastewater to produce digestate and sludge, aerobically treating the digestate to produce an effluent and a second sludge, separating the effluent into a first filtrate and a first reject, treating the sludge, second sludge, and first reject in a solids-liquid separation apparatus to produce recovered water, directing the recovered water into the mixing tank, filtering the first filtrate in a nanofiltration unit to produce a second filtrate and a second reject, filtering the second filtrate in a first reverse osmosis unit to produce a third filtrate and a third reject, filtering the third reject in a second reverse osmosis unit to produce a fourth filtrate and a fourth reject, combining the third filtrate and fourth filtrate to form a product water, and combining the second reject and the fourth reject into a combined reject for disposal.
A method of retrofitting a filter plate including a filtration zone and a frame surrounding the filtration zone for use in a filter press. The frame of the filter plate is altered to removably receive a filtrate cartridge, the filtrate cartridge constructed and arranged to facilitate flow out of a filtration chamber of the filter press associated with the filtration zone to a discharge port. The filtrate cartridge is inserted in the frame. Related filter plates and filter presses are also disclosed.
Methods of treating water containing PFAS are disclosed. The methods include dosing water containing PFAS with a removal material, e.g., adsorption media, to promote loading of the removal material, e.g., adsorption media, with PFAS. The methods include producing a slurry stream including the PFAS-loaded removal material. e.g., adsorption media. The methods include subjecting the slurry stream to a supercritical water oxidation (SCWO) process. The SCWO process is driven at least in part by a predetermined calorific value of the removal material, e.g., adsorption media. Systems for treating water containing PFAS are also disclosed. Systems include a contact reactor containing removal material. e.g., adsorption media; a source of water comprising PFAS fluidly connected to an inlet of the contact reactor; a separation system fluidly connected downstream of the contact reactor; and SCWO reactor fluidly connected downstream of the separation system.
Systems for treating water containing PFAS are disclosed. Systems include a PFAS separation stage including a vessel and an ion exchange resin having an affinity for PFAS positioned within the vessel. Systems further include an ion exchange resin regeneration stage with a source of an ion exchange resin regeneration solution including a surfactant. The ion exchange resin regeneration stage is configured to dose spent ion exchange resin with a volume of the ion exchange resin regeneration solution to remove PFAS from the spent ion exchange resin and regenerate the ion exchange resin. Methods of treating water including PFAS with regeneration of a spent ion exchange resin are disclosed. Methods of facilitating regeneration of a spent ion exchange resin are also disclosed.
A method of removing iron from a wastewater stream including chemical mechanical polishing wastewater from which an azole compound has been previously removed by a Fenton's reaction. The method comprises adding an iron-containing chemical to the wastewater stream to form an iron-dosed wastewater stream, adjusting a pH of the iron-dosed wastewater stream to a pH at which an iron compound precipitates from the iron-dosed wastewater stream, and performing solid/liquid separation on the pH-adjusted iron-dosed wastewater stream to separate the pH-adjusted iron-dosed wastewater stream into a low iron treated water stream and a high iron waste product including the iron compound.
Methods of stabilizing virgin ion exchange resin material are provided. The methods include cleansing the virgin ion exchange resin material with a preparation comprising a non-ionic detergent. The methods include cleansing the virgin ion exchange resin material with a preparation comprising an alcohol solvent. The methods include rinsing virgin ion exchange resin material with deoxygenated water, the methods include introducing the cleansed/rinsed virgin ion exchange resin material into a gas impermeable vessel and hermetically sealing the vessel. The methods include introducing an oxygen scavenging material into the gas impermeable vessel, and hermetically sealing the vessel. A method of facilitating water treatment in a site in need thereof by providing a cleansed virgin ion exchange resin material in deoxygenated water is also disclosed.
A high-solids wastewater treatment system is disclosed. The wastewater treatment system includes a ballasted reactor, a solids-liquid separation subsystem, a pre-treatment subsystem, a ballast feed subsystem, and a ballast recovery subsystem. The high-solids wastewater treatment system can include a reaction tank, a thickener, and a filter press. A method of treating high-solids wastewater is also disclosed. The method includes contacting a wastewater feed with a coagulant or flocculant, thickening the dosed wastewater, treating the effluent with a ballast, settling the treated wastewater, and conveying the ballasted sludge to the wastewater feed, dosed wastewater, or treated wastewater. The wastewater feed may have more than 500 mg/L of total suspended solids. The wastewater feed may contain inorganic solids.
Water treatment systems including electrically-driven and pressure-driven separation apparatus configured to produce a first treated water suitable for use as irrigation water and a second treated water suitable for use as potable water from one of brackish water and saline water and methods of operation of same.
Self-cleaning electrochemical cells, systems including self-cleaning electrochemical cells, and methods of operating self-cleaning electrochemical cells are disclosed. The self-cleaning electrochemical cell can include a plurality of concentric electrodes disposed in a housing, a fluid channel defined between the concentric electrodes, and an electrical connector positioned at a distal end of a concentric electrode and electrically connected to the electrode. The electrical connectors may be configured to provide a substantially even current distribution to the concentric electrode and minimize a zone of reduced velocity occurring downstream from the electrical connector. The electrical connector may be configured to cause a temperature of an electrolyte solution to increase by less than about 0.5° C. while transmitting at least 100 W of power.
An apparatus for wasting flocculant sludge from a clarifier is provided including a wasting pipe fluidly connectable to a waste conduit, a manifold fluidly connectable to the wasting pipe, an upper header for collecting the flocculant sludge fluidly connectable to the manifold, a return sludge pipe fluidly connectable to a return sludge well, a lower header for collecting settled sludge fluidly connectable to the return sludge pipe, and a drive mechanism for rotating the upper header and the lower header about a center axis. A wastewater treatment system is provided including the clarifier fluidly connectable to a source of a mixed liquor and the apparatus for wasting flocculant sludge. A method of separating settled sludge from a clarifier is provided including withdrawing flocculant sludge and withdrawing settled sludge. A method of retrofitting a clarifier is also provided including providing the manifold, the upper header, and the drive mechanism.
Systems and methods for treating contaminated water are provided. The systems may include at least three resin adsorbers, wherein a first and second resin adsorber are on-line and a third resin adsorber is selectively off-line from the first and second on-line resin adsorbers, and wherein the at least three resin adsorbers are fluidly couplable to a source of contaminated water containing at least one recalcitrant organic contaminant (e.g., 1, 4-dioxane). At least one heated recirculation tank may be fluidly coupled to an inlet of the third resin adsorber and configured to regenerate the third resin adsorber, and at least one air stripping unit may be fluidly coupled to an outlet of the third resin adsorber, wherein the at least one air stripping unit is configured to remove at least a portion of the at least one recalcitrant organic contaminant from heated water from the third resin adsorber.
Methods of monitoring water treatment systems by obtaining measurements of water treatment system parameters and transmitting the measurements to a local controller and cloud-based platform are disclosed. Systems for monitoring water treatment systems are also provided. The systems include at least one sensor positioned to measure a parameter of the water treatment system, a treatment module operably connected to the at least one sensor, and a local controller operably connected to the treatment module and a cloud-based platform. Methods of retrofitting water treatment systems by providing the treatment module and local controller are also disclosed.
H04W 4/38 - Services specially adapted for particular environments, situations or purposes for collecting sensor information
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
A method of treating selenium-containing wastewater comprises performing anoxic biological treatment of the selenium-containing wastewater to produce a first liquid including a residual dissolved selenium species, introducing an oxidant into the first liquid to form an oxidant-treated first liquid, introducing a coagulant into the oxidant-treated first liquid to form a second liquid having selenium-containing solids, and removing the selenium-containing solids from the second liquid in a solids-liquid separation operation.
A method of operating a sequencing batch reactor process includes introducing wastewater to be treated into the sequencing batch reactor, and selectively removing a portion of biological flocs from the wastewater in the sequencing batch reactor that settles at a slower rate than another portion of biological flocs in the sequencing batch reactor.
A method of operating a sequencing batch reactor process includes introducing wastewater to be treated into the sequencing batch reactor and subjecting the wastewater to treatment in the sequencing batch reactor in an aerated anoxic mode in in which a quantity of oxygen is supplied at a level insufficient to meet a biological oxygen demand of the wastewater, but sufficient to cause simultaneous nitrification and denitrification reactions to occur in the wastewater.
An electrochemical separation device includes a first electrode, a second electrode, and a cell stack including a plurality of sub-blocks each having alternating depleting compartments and concentrating compartments and each including frame and channel portions disposed between the first electrode and the second electrode. An internal seal formed of a first material is disposed between and in contact with the channel portions between adjacent sub-blocks in the cell stack and configured to prevent leakage between depleting compartments and concentrating compartments in the adjacent sub-blocks. An external seal formed of a second material having at least one material parameter different from the first material is disposed between and in contact with the frames of the adjacent sub-blocks in the cell stack and configured to prevent leakage from an internal volume of the electrochemical separation device to outside of the electrochemical separation device.
B01D 65/00 - Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
C02F 1/469 - Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
36.
Pulsed power supply for sustainable redox agent supply for hydrogen abatement during electrochemical hypochlorite generation
A method of operating an electrochemical cell including introducing an aqueous solution into the electrochemical cell, applying a current across an anode and a cathode to produce a product, monitoring the voltage, dissolved hydrogen, or a condition of the aqueous solution, and applying the current in a pulsed waveform responsive to one of the measured parameters is disclosed. An electrochemical system including an electrochemical cell including an anode and a cathode, a source of an aqueous solution having an outlet fluidly connectable to the electrochemical cell, a sensor for measuring a parameter, and a controller configured to cause the anode and the cathode to apply the current in a pulsed waveform responsive to the parameter measurement is disclosed. Methods of suppressing accumulation of hydrogen gas within the electrochemical cell are also disclosed. Methods of facilitating operation of an electrochemical cell are also disclosed.
An electrochemical cell including a first chamber having an anode, a second chamber having a cathode, at least one ionic connection between the first chamber and the second chamber, such that liquid electrolyte from the first chamber is prevented from mixing with liquid electrolyte in the second chamber is provided. The first chamber and the second chamber can be arranged in parallel and positioned remotely from each other. An electrochemical system including the electrochemical cell, and first and second sources of saline aqueous solutions is also provided. Water treatment systems are also provided. A method of operating an electrochemical cell including introducing first and second saline aqueous solutions into first and second chambers of the electrochemical cell, and applying a current across the anode and the cathode to generate first and second products, respectively is also provided. A method of facilitating operation of an electrochemical cell is also provided.
A vertical flow dry media scrubber comprises four vertically aligned dry media beds and air plenums alternately disposed above and below each of the four vertically aligned dry media beds. The plurality of air plenums include contaminated air plenums including contaminated air inlets positioned in the walls of a lowermost one of the contaminated air plenums and an uppermost one of the contaminated air plenums, respectively, and treated air plenums including treated air outlets positioned in the walls of a lowermost one of the treated air plenums, an uppermost one of the treated air plenums, and a centrally located one of the treated air plenums, respectively, the treated air plenums disposed on vertically opposite sides of one of the contaminated air plenums, the contaminated air plenums disposed on vertically opposite sides of one of the treated air plenums.
B01D 29/50 - 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
B01D 39/02 - Loose filtering material, e.g. loose fibres
B01D 53/74 - General processes for purification of waste gasesApparatus or devices specially adapted therefor
B01D 53/00 - 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
B01D 24/00 - Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
A mobile, modular water treatment system for the production of ultrapure water includes a storage tank, an actinic radiation treatment apparatus disposed on a mobile platform, an electrically driven water treatment apparatus disposed on the mobile platform, downstream of the actinic radiation treatment apparatus, an ion exchange media apparatus disposed on the mobile platform downstream of the electrically driven water treatment apparatus, and a pressure driven filtration sub-system disposed on the mobile platform downstream of the ion exchange media apparatus. The pressure driven filtration sub-system outputs the ultrapure water and is connectable to a water distribution system for a point of use and for recirculation of a portion of the ultrapure water to the storage tank.
A method of treating a wastewater having an ammonia concentration that is toxic to anaerobic bacteria includes introducing the wastewater into an anaerobic biological treatment vessel to produce a digestate, introducing a portion of the digestate into an ammonia removal sub-system to produce an effluent having a lower ammonia concentration than the digestate, diluting the wastewater introduced into the anaerobic biological treatment vessel by introducing a portion of the effluent from the ammonia removal sub-system into the anaerobic biological treatment vessel with the wastewater, and regulating the flow rate of the portion of the effluent from the ammonia removal sub-system to cause the portion of the effluent to be introduced into the anaerobic biological treatment vessel in an amount sufficient to form an anaerobic biological treatment vessel influent having an ammonia concentration lower than an ammonia concentration that is toxic to anaerobic bacteria in the anaerobic biological treatment vessel.
C02F 1/04 - Treatment of water, waste water, or sewage by heating by distillation or evaporation
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
A method for providing treated water comprises introducing water to be treated into a water treatment system, treating the water to be treated in the water treatment system to produce a treated water, measuring a quality parameter of the treated water, and determining an amount of contaminant removed from the water to be treated over a predetermined period of time from a totalized flow of the treated water and an average difference in the quality parameter between the treated water and the water to be treated over the predetermined period of time.
Methods of treating water having organic contaminants are disclosed. The methods include performing a first treatment on the water effective to oxidize a predetermined amount of the organic contaminant and electrochemically treating the water. The methods include introducing a hydrogen peroxide (H2O2) containing reagent into the water, allowing the H2O2 containing reagent to react with the organic contaminant for a reaction time effective to oxidize a predetermined amount of the organic contaminant, and electrochemically treating the water. Systems for treating water are also disclosed. The systems include an electrochemical cell, a source of an H2O2 containing reagent upstream from the electrochemical cell, and a controller operable to regulate a reaction time of the H2O2 containing reagent in the water and a potential applied to the electrochemical cell.
Systems and methods for treating water containing PFAS are disclosed. Adsorption media may be used to remove PFAS from water. Supercritical carbon dioxide (sCO2) may be used to release PFAS from loaded adsorption media to form an extractant mixture. The PFAS may then be separated from the extractant mixture for downstream storage or destruction
Techniques and systems for neutralizing discharge waters from ballast and/or cooling water biocidal treatment and disinfection systems are provided. The systems utilize oxidation reduction potential control to regulate the dechlorination of a biocidal agent to allowable discharge levels in ship buoyancy systems and ship cooling water systems.
Electrochemical water treatment devices are disclosed. The device includes an electrochemical separation module fluidly connectable to the source of water to be treated. The electrochemical separation module includes a first electrode, a second electrode, and a plurality of dilution compartments. Each of the dilution compartments includes a first region of ion exchange media having a first average particle size, a second region of ion exchange media having a second average particle size, and a third region of ion exchange media having a third average particle size. A volume of the second region of ion exchange media being greater than or equal to a total volume of the first and third regions of ion exchange media. Methods of facilitating treatment of water containing weakly ionized species, e.g., dissolved boron containing species and dissolved silica containing species, are disclosed. Electrochemical separation modules are also disclosed.
C02F 1/469 - Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
A system and method of treating wastewater. In one embodiment, the system comprises a biological reactor fluidly connected to a source of wastewater and having a treated wastewater outlet, a fixed film biological reactor connected to the source of wastewater and having a fixed film effluent outlet, and a ballasted system fluidly connected to the fixed film effluent outlet. The ballasted system may comprise a ballast reactor tank configured to provide a ballasted effluent, and a source of ballast material fluidly connected to an inlet of the ballast reactor tank. The system may further comprise a bypass line having an inlet fluidly connected to the source of wastewater, a first outlet fluidly connected to the ballasted system, and a second outlet fluidly connected to the fixed film biological reactor, the bypass line configured to bypass the fixed film biological reactor.
Systems and methods for water treatment involving use of a magnetic ballast material to facilitate settling operations are provided. Magnetic ballast material is recovered downstream of clarification with a magnetic drum for reuse. At least one in-line magnetic recovery device augments the recovery of magnetic ballast material.
Systems and methods for treating water containing TOC and PFAS are disclosed. An electrochemical cell may be used to concentrate the PFAS via foam fractionation. The electrochemical cell may destroy TOC and some PFAS compounds. A downstream mineralization process may destroy PFAS compounds in the foam fraction.
According to various aspects and embodiments, a system and method for two-stage filtration is provided. The system includes an inlet fluidly connectable with wastewater, a first stage filter assembly that is fluidly connectable with the inlet and has a rotary drum with a filter surface configured for radially inward fluid flow, a second stage filter assembly that is fluidly connectable with the first stage filter and has a plurality of filter discs configured for radially outward fluid flow, and an outlet fluidly connectable with filtrate generated by the second stage disc filter assembly.
B01D 36/02 - Combinations of filters of different kinds
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 33/23 - Construction of discs or component sectors thereof
B01D 33/39 - Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in parallel connection concentrically or coaxially
B01D 33/41 - Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in series connection
B01D 33/46 - Regenerating the filter material in the filter by scrapers, brushes or the like acting on the cake-side of the filtering element
B01D 33/50 - Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
A reverse osmosis (RO) system is described that is connected to a dialysis machine and is capable of using heated purified water to clean and disinfect an external connection section or portion disposed between the RO systems and the dialysis unit (or any other external heat tolerant device) without forming a closed loop system between both systems before and during a heat forward process. This can be accomplished without the need for direct/indirect or wired/wireless communication with the dialysis unit or the need to introduce a chemical cleaner or process that would require further rinsing after chemical disinfection.
Methods of treating wastewater with a sequencing batch reactor (SBR) system having a plurality of SBRs are disclosed. The methods include operating each of the reactors in a batch flow mode, which includes controlling dissolved oxygen in the reactor to a concentration insufficient to meet a biological oxygen demand of the wastewater, but sufficient to cause simultaneous nitrification and denitrification reactions. The methods include determining an anticipated flow rate, selecting one or more reactor(s) capable of receiving wastewater in a continuous flow mode, and responsive to the anticipated flow rate being greater than one tolerated by the reactors, operating the selected reactor(s) in a continuous flow mode. Sequencing batch reactor systems including a plurality of SBRs, each having an aerator, a loading subsystem, and a controller are also disclosed.
Electrochemical treatment for the removal of poly- and perfluorolkyl substances from water is disclosed. An electrochemical cell may include a Magnéli phase titanium oxide electrode.
Techniques and systems for neutralizing discharge waters from ballast and/or cooling water biocidal treatment and disinfection systems are provided. The systems utilize, inter alia, oxidation reduction potential control to regulate the dechlorination of an electrocatalytically generated biocidal agent to allowable discharge levels in ship buoyancy systems and ship cooling water systems.
Methods for facilitating the treatment of potable water containing PFAS are disclosed. A water treatment system involving a plurality of vessels including granular activated carbon or ion exchange resin may be configured. The water treatment system may be arranged on a mobile platform, and the mobile platform may be positioned near a source of the potable water containing PFAS.
Systems and methods for treating water containing per- and polyfluoroalkyl substances (PFAS) are disclosed. A bioreactor and a supercritical water oxidation (SCWO) system may be implemented to provide a complete chain of separation and destruction of PFAS to treat contaminated water. Adsorption media, such as activated carbon, may be added to facilitate the removal of PFAS from water. The bioreactor first produces an activated sludge containing the adsorbed PFAS, followed by the SCWO system.
The present invention is directed to wall box for hemodialysis interface having two isolated zones. The first zone is a clean interface zone having sources of purified water and dialysis fluids. The second zone is a waste interface zone comprising waste connectors and a waste drain.
A sensor assembly having a housing including a plurality of compartments, an actuator for selectively hermetically sealing or fluidly connecting the plurality of compartments, a plurality of sensors each positioned in a corresponding compartment, and a receiver is disclosed. A method of monitoring a parameter of a fluid in a remote location is also disclosed. The method includes deploying the sensor assembly to the remote location, fluidly connecting a first sensor to the fluid, transmitting to an external controller data including values for the measured parameter of the fluid, and operating the actuator to fluidly connect a second sensor responsive to the operating interval of the first sensor trending to expiration. A sensing system having a sensor assembly and an external controller is also disclosed. A method of facilitating monitoring a parameter of the fluid in a remote location by providing the sensor assembly is also disclosed.
Water filtration systems are disclosed. The water filtration systems include a regenerative media filter vessel comprising a housing, an inlet, and an outlet, a diffuser fluidly connected to the inlet and disposed within the regenerative media filter vessel, and at least one pump configured to direct water through the water filtration system. The housing of the regenerative media filter vessel comprises a concave lower portion centered about a vertical axis of the vessel. The position of the diffuser along a height of the regenerative media filter vessel is determined by at least a ratio of the height to an inner diameter of the regenerative media filter vessel and a radius of curvature of the concave lower portion. A regenerative media filter including a diffuser having asymmetrically spaced apertures is also disclosed.
B01D 24/08 - Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being clamped between pervious fixed walls the filtering material being supported by at least two pervious coaxial walls
C02F 1/00 - Treatment of water, waste water, or sewage
C02F 1/28 - Treatment of water, waste water, or sewage by sorption
G06F 30/17 - Mechanical parametric or variational design
G06F 30/28 - Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
Environmental control apparatus, namely, fitted protective arch supported retractable fabric covers specially adapted for rectangular waste water treatment basins to collect fumes, control odors, reduce heat loss, eliminate algae growth, and protect contents for waste water and potable water applications
64.
APPARATUS, SYSTEM AND METHOD FOR PFAS REMOVAL AND MINERALIZATION
Systems and methods for treating water containing PFAS are disclosed. Adsorption media may be used to remove PFAS from water, including GAC and ion exchange resins. An eluent may release PFAS from loaded adsorption media to form a waste stream. An internal combustion engine may be used to mineralize PFAS in the waste stream.
C02F 1/42 - Treatment of water, waste water, or sewage by ion-exchange
B01J 20/22 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising organic material
B01J 20/30 - Processes for preparing, regenerating or reactivating
C02F 1/28 - Treatment of water, waste water, or sewage by sorption
C02F 9/20 - Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems
Trailer mounted system, namely, water treatment apparatus specially incorporated into trailers for mobile and rapid deployment for use in the demineralization of water streams.
66.
SYSTEM AND METHOD FOR TREATMENT OF BIOMASS CONTAINING WASTEWATER FOR RENEWABLE ENERGY
A method of treating biomass and ammonia-containing wastewater comprises anaerobically digesting the wastewater to produce a digestate, oxidizing dissolved sulfides in the digestate, mixing the digestate to form a mixed liquid, filtering the mixed liquid to produce a first filtrate, removing ammonia from the first filtrate to produce an ammonia-depleted filtrate, removing organic contaminants and divalent ions from the ammonia-depleted filtrate by nanofiltration to produce an organic-containing second retentate and an organic-depleted second filtrate, removing additional organic contaminants from the organic-containing second retentate by a second nanofiltration operation to produce a third filtrate and a third retentate, removing inorganic ionic species from the organic-depleted second filtrate by reverse osmosis to produce a fourth filtrate and a fourth retentate, combining the third filtrate and the fourth retentate, and removing additional inorganic ionic species from the combined third filtrate and fourth retentate by a second reverse osmosis operation.
A method of treating wastewater comprises performing biological treatment of the wastewater to generate a sludge, adding a ballasting agent to the sludge to form a ballasted sludge, and performing solid-liquid separation of a first portion of the ballasted sludge using a dissolved air flotation process to form a solids-rich concentrated sludge and a solids-lean effluent.
An electrodeionization device includes a spacer comprising a first inlet port, a first outlet port, a first plurality of first flow channels configured to direct fluid in a first direction from the first inlet port to the first outlet port, and a second flow channel in series fluid communication with the first plurality of first flow channels between the first inlet port and first outlet port and configured to direct fluid in a second direction different from the first direction from the first inlet port to the first outlet port.
C02F 1/469 - Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
69.
USE OF FLOTATION FOR SEPARATION AND THICKENING OF BALLASTED SLUDGE
A method of treating wastewater comprises performing biological treatment of the wastewater to generate a sludge, adding a ballasting agent to the sludge to form a ballasted sludge, and performing solid-liquid separation of a first portion of the ballasted sludge using a dissolved air flotation process to form a solids-rich concentrated sludge and a solids-lean effluent.
A method of operating a sequencing batch reactor process includes introducing wastewater to be treated into the sequencing batch reactor and subjecting the wastewater to treatment in the sequencing batch reactor in an aerated anoxic mode in in which a quantity of oxygen is supplied at a level insufficient to meet a biological oxygen demand of the wastewater, but sufficient to cause simultaneous nitrification and denitrification reactions to occur in the wastewater.
An electrochemical separation device includes a first electrode, a second electrode, a cell stack including alternating depleting compartments and concentrating compartments disposed between the first electrode and the second electrode, an inlet manifold configured to introduce a fluid to one of the depleting compartments or the concentrating compartments an outlet manifold, and one or more of a fluid flow director disposed within the inlet manifold and having a surface configured to alter a flow path of the fluid introduced into the inlet manifold and direct the fluid into the one of the depleting compartments or the concentrating compartments, and a second fluid flow director disposed within the outlet manifold and having a surface configured to alter a flow path of the fluid introduced into the outlet manifold via one of the depleting compartments or the concentrating compartments.
An apparatus for wasting flocculant sludge from a clarifier is provided including a wasting pipe fluidly connectable to a waste conduit, a manifold fluidly connectable to the wasting pipe, an upper header for collecting the flocculant sludge fluidly connectable to the manifold, a return sludge pipe fluidly connectable to a return sludge well, a lower header for collecting settled sludge fluidly connectable to the return sludge pipe, and a drive mechanism for rotating the upper header and the lower header about a center axis. A wastewater treatment system is provided including the clarifier fluidly connectable to a source of a mixed liquor and the apparatus for wasting flocculant sludge. A method of separating settled sludge from a clarifier is provided including withdrawing flocculant sludge and withdrawing settled sludge. A method of retrofitting a clarifier is also provided including providing the manifold, the upper header, and the drive mechanism.
A method for treating a waste stream from a copper CMP process including dissolved copper and abrasive particles having a number weighted mean size of less than 0.75 μm includes introducing the waste stream into a feed tank, flowing the waste stream from the feed tank into an ultrafiltration module, filtering the waste stream through a membrane of the ultrafiltration module to form a solids-lean filtrate, directing the solids-lean filtrate from the ultrafiltration module through an ion exchange unit to remove dissolved copper and produce a treated aqueous solution having a lower copper concentration than the copper concentration of the waste stream, backwashing the membrane ultrafiltration module to remove the slurry solids from the membrane of the ultrafiltration module, and combining the removed slurry solids with the treated aqueous solution to form a combined discharge stream having a copper concentration suitable for discharge into the environment.
A method of increasing operational efficiency of a power plant includes determining an average rate of accumulation of scale-forming compounds in a cooling water source, directing water from the cooling water source having a first concentration of scale forming compounds through a treatment system to produce a treated water having a lower concentration of scale-forming components than the first concentration by operating the treatment system with operating parameters selected such that a rate of removal of the scale-forming components from the water in the treatment system is greater than the average rate of accumulation of the scale-forming components, directing the treated water back into the cooling water source, and circulating water including the treated water from the cooling water source through a cooling system of the power plant.
C02F 9/00 - Multistage treatment of water, waste water or sewage
C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
C02F 1/469 - Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
C02F 1/50 - Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
C02F 1/70 - Treatment of water, waste water, or sewage by reduction
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
C02F 103/02 - Non-contaminated water, e.g. for industrial water supply
76.
PFAS TREATMENT USING GAC, REACTIVATION AND THERMAL DESTRUCTION
Systems and methods for treating activated carbon used in treatment of water and wastewater containing PFAS are disclosed. A vapor phase granular activated carbon (GAC) column or an internal combustion engine may be fluidly connected downstream of a thermal oxidation process to polish a vapor phase effluent associated with reactivation.
C02F 1/02 - Treatment of water, waste water, or sewage by heating
B01D 53/02 - 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 adsorption, e.g. preparative gas chromatography
C02F 1/00 - Treatment of water, waste water, or sewage
C02F 1/28 - Treatment of water, waste water, or sewage by sorption
C02F 1/74 - Treatment of water, waste water, or sewage by oxidation with air
77.
PFAS TREATMENT USING GAC, REACTIVATION AND THERMAL DESTRUCTION
Systems and methods for treating activated carbon used in treatment of water and wastewater containing PFAS are disclosed. A vapor phase granular activated carbon (GAC) column or an internal combustion engine may be fluidly connected downstream of a thermal oxidation process to polish a vapor phase effluent associated with reactivation.
B01D 53/02 - 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 adsorption, e.g. preparative gas chromatography
C02F 1/00 - Treatment of water, waste water, or sewage
C02F 1/02 - Treatment of water, waste water, or sewage by heating
C02F 1/28 - Treatment of water, waste water, or sewage by sorption
C02F 1/74 - Treatment of water, waste water, or sewage by oxidation with air
78.
AUTONOMOUS CHEMICAL DOSING SYSTEM AND METHODS OF USE THEREOF
A wastewater treatment management system including a plurality of monitoring stations, a treating station for introducing a treating agent to wastewater, and a principal processing facility for controlling a dose of the treating agent. A system configured to treat a wastewater stream collection system including a source of a treating agent, a metering valve, a sensor, and a controller operatively connected to the metering valve and the sensor. A non-transitory computer-readable medium including instruction that instruct a controller to perform a method of controlling addition of a treating agent into a wastewater stream collection system. A controller for a system configured to treat odor and control corrosion in a wastewater stream collection system that is operatively connectable to a metering valve for administering a treating agent to a wastewater stream collection system.
Electrochemical water treatment devices are disclosed. The device includes a feed inlet fluidly connectable to a source of water including dissolved silica and a chlorine-containing compound and an electrochemical separation module fluidly connectable to the feed inlet. The electrochemical separation module includes a dilution compartment, a concentration compartment, an ion exchange membrane positioned between the dilution and concentration compartment, and first and second electrodes. A first portion of a volume of the dilution compartment includes a first ion exchange media positioned proximate to the feed inlet. A second portion of the volume of the dilution compartment includes a second ion exchange media positioned distal to the feed inlet. The first ion exchange media has a greater resistance to the chlorine-containing compound than the second ion exchange media. Methods of reducing a concentration of dissolved silica in water are disclosed. Methods of facilitating treatment of water containing dissolved silica are disclosed.
B01D 61/48 - Apparatus therefor having one or more compartments filled with ion-exchange material
C02F 1/469 - Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
80.
ION EXCHANGE MEMBRANE COMPOSITION AND METHODS FOR THE CONCENTRATION OF PERFLUOROALKYL SUBSTANCES
Methods of treating a waste stream containing perfluoroalkyl substances (PFAS) are disclosed. The methods include directing the waste stream to a dilution compartment of an electrochemical separation device, directing a treatment stream to a concentration compartment of the electrochemical separation device, and applying a voltage across the electrodes to produce a dilute stream substantially free of the PFAS and a concentrate stream. At least one of the waste stream and the treatment stream comprises a water miscible organic solvent. Methods of concentrating PFAS from a wastewater are also disclosed. PFAS concentration systems are also disclosed. The systems include a column comprising an ion exchange resin and an electrochemical separation device having a dilution compartment fluidly connected to an outlet of the column. Methods of facilitating treatment of a waste stream containing PFAS are also disclosed.
C02F 1/469 - Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
C02F 1/42 - Treatment of water, waste water, or sewage by ion-exchange
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
Methods of treating wastewater with a sequencing batch reactor are disclosed. The methods include determining an anticipated flow rate of the wastewater and independently operating one or more reactor in a continuous flow mode responsive to the anticipated flow rate. Sequencing batch reactor systems are also disclosed. The systems include a plurality of reactors operating in parallel, a loading subsystem, a measuring subsystem, and a controller. The controller can be configured to independently operate each of the reactors in a batch flow mode or in a continuous flow mode responsive to the anticipated flow rate. Methods of retrofitting existing sequencing batch reactor systems and methods of facilitating treatment of wastewater with sequencing batch reactor systems are also disclosed.
A system for treating water for use in aquatics or recreational facilities is disclosed. The system includes a media filter vessel, a pressure sensor, and a monochromatic light source. A method of treating water for use in aquatics or recreational facilities is also disclosed. The method includes fluidly connecting a media filter vessel to a source of water for use in aquatics or recreational facilities, illuminating a media inside the media filter vessel, observing a monochromatic light source display a first indicator and observing a monochromatic light source display a second indicator. A method of retrofitting a media filter vessel is also disclosed. The method includes installing a pressure sensor on the media filter vessel, installing a monochromatic light source and operably connecting the monochromatic light source to a manual control and to the pressure sensor.
B01D 24/48 - Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof integrally combined with devices for controlling the filtration
B01D 24/02 - Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
B01D 24/46 - Regenerating the filtering material in the filter
Systems for water desalination are disclosed. The systems include a source of non- potable water, a low pressure nanofiltration device, a first electrodialysis unit, a second electrodialysis unit, and recycle conduits. Methods of water desalination including directing non- potable water to a low pressure nanofiltration device, a first electrodialysis unit, and a second electrodialysis unit are also disclosed. Methods of facilitating water desalination by providing a water desalination system are also disclosed.
C02F 1/469 - Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
C02F 9/00 - Multistage treatment of water, waste water or sewage
Systems and methods for treating water containing PFAS are disclosed. Plasma activated excited gas is encapsulated with nanobubbles in water comprising PFAS to be treated. Liquid-phase reaction of the PFAS with the encapsulated plasma activated excited gas at the air-water interface of the nanobubbles is promoted. The PFAS can be concentrated upstream of the plasma reactor. A foam fractionation process may be used in conjunction with the plasma reactor to facilitate PFAS removal.
A system for removing undesirable compounds from contaminated air includes a biofilter having an alkaline material introduction system and a fuzzy-logic based controller. A contaminant, such as hydrogen sulfide, is removed from contaminated air by passing the contaminated air through the biofilter.
Systems and methods for treating water containing PFAS are disclosed. Plasma activated excited gas is encapsulated with nanobubbles in water comprising PFAS to be treated. Liquid-phase reaction of the PFAS with the encapsulated plasma activated excited gas at the air-water interface of the nanobubbles is promoted. The PFAS can be concentrated upstream of the plasma reactor. A foam fractionation process may be used in conjunction with the plasma reactor to facilitate PFAS removal.
An apparatus for diffusing wastewater into a clarifier is disclosed. The apparatus has a rotationally symmetric hollow body having a plurality of flow distributors positioned about a perimeter of the rotationally symmetric hollow body and a baffle extending around a bottom end portion of the rotationally symmetric hollow body. The apparatus is dimensioned to fit within an influent well of the clarifier and be connectable to the clarifier on a top end portion of the rotationally symmetric hollow body. A wastewater treatment system including a clarifier and the apparatus is disclosed. A method of retrofitting a circular clarifier by providing the apparatus is also disclosed.
Systems for treating water, e.g., mobile deionization systems, are disclosed. The system includes a system inlet connectable to a source of water to be treated; a water distribution manifold connected to the system inlet and including a plurality of valves structured and arranged to provide a configurable flow path along the water distribution manifold; a plurality of water treatment vessels each having an inlet and an outlet connected to the water distribution manifold; and a system outlet connected to the outlet of a last of the plurality of water treatment vessels. The plurality of valves are selectively operable to provide for sections of the water distribution manifold to switch between flowing water into one or more of the plurality of water treatment vessels or receiving water from the one or more of the plurality of water treatment vessels. Methods of treating water using the systems are also disclosed.
C02F 1/42 - Treatment of water, waste water, or sewage by ion-exchange
C02F 1/00 - Treatment of water, waste water, or sewage
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
An apparatus for diffusing wastewater into a clarifier is disclosed. The apparatus has a rotationally symmetric hollow body having a plurality of flow distributors positioned about a perimeter of the rotationally symmetric hollow body and a baffle extending around a bottom end portion of the rotationally symmetric hollow body. The apparatus is dimensioned to fit within an influent well of the clarifier and be connectable to the clarifier on a top end portion of the rotationally symmetric hollow body. A wastewater treatment system including a clarifier and the apparatus is disclosed. A method of retrofitting a circular clarifier by providing the apparatus is also disclosed.
Systems for treating water, e.g., mobile deionization systems, are disclosed. The system includes a system inlet connectable to a source of water to be treated; a water distribution manifold connected to the system inlet and including a plurality of valves structured and arranged to provide a configurable flow path along the water distribution manifold; a plurality of water treatment vessels each having an inlet and an outlet connected to the water distribution manifold; and a system outlet connected to the outlet of a last of the plurality of water treatment vessels. The plurality of valves are selectively operable to provide for sections of the water distribution manifold to switch between flowing water into one or more of the plurality of water treatment vessels or receiving water from the one or more of the plurality of water treatment vessels. Methods of treating water using the systems are also disclosed.
A method of treating water in a water treatment system after a replacement of an ion exchange bed includes introducing water to be treated into the ion exchange bed of the water treatment system to produce treated water, calculating a current exchange daily average flow rate of water through the water treatment system, calculating a cumulative daily average flow rate of water through the water treatment system, and determining an estimated number of days remaining to exhaustion of the ion exchange bed based on the current exchange daily average flow rate and the cumulative daily average flow rate.
Methods of treating water containing PFAS are disclosed. The methods include dosing water containing PFAS with a removal material, e.g., adsorption media, to promote loading of the removal material, e.g., adsorption media, with PFAS. The methods include producing a slurry stream including the PFAS-loaded removal material, e.g., adsorption media. The methods include subjecting the slurry stream to a supercritical water oxidation (SCWO) process. The SCWO process is driven at least in part by a predetermined calorific value of the removal material, e.g., adsorption media. Systems for treating water containing PFAS are also disclosed. Systems include a contact reactor containing removal material, e.g., adsorption media; a source of water comprising PFAS fluidly connected to an inlet of the contact reactor; a separation system fluidly connected downstream of the contact reactor; and SCWO reactor fluidly connected downstream of the separation system.
A water treatment system comprises an actinic radiation reactor, an electrochemical cell configured to produce hydrogen peroxide and having an outlet in fluid communication between a source of electrolyte and the actinic radiation reactor, and a source of oxygen in communication with an inlet of the electrochemical cell.
A system for treating a source of water contaminated with PFAS is disclosed. The system includes a PFAS separation stage having an inlet fluidly connectable to the source of water contaminated with PFAS, a diluate outlet, and a concentrate outlet and a PFAS elimination stage positioned downstream of the PFAS separation stage and having an inlet fluidly connected to an outlet of the PFAS separation stage, the elimination of the PFAS occurring onsite with respect to the source of water contaminated with PFAS, with the system maintaining an elimination rate of PFAS greater than about 99%. A method of treating water contaminated with PFAS is also disclosed. The method includes introducing contaminated water from a source of water contaminated with a first concentration of PFAS to an inlet of a
A system for treating a source of water contaminated with PFAS is disclosed. The system includes a PFAS separation stage having an inlet fluidly connectable to the source of water contaminated with PFAS, a diluate outlet, and a concentrate outlet and a PFAS elimination stage positioned downstream of the PFAS separation stage and having an inlet fluidly connected to an outlet of the PFAS separation stage, the elimination of the PFAS occurring onsite with respect to the source of water contaminated with PFAS, with the system maintaining an elimination rate of PFAS greater than about 99%. A method of treating water contaminated with PFAS is also disclosed. The method includes introducing contaminated water from a source of water contaminated with a first concentration of PFAS to an inlet of a
PFAS separation stage, treating the contaminated water in the PFAS separation stage to produce a product water substantially free of PFAS and a PFAS concentrate having a second PFAS concentration greater than the first PFAS concentration, introducing the PFAS concentrate to an inlet of a PFAS elimination stage; and activating the PFAS elimination stage to eliminate the PFAS in the PFAS concentrate. A method of retrofitting a water treatment system as described herein is also disclosed. The method includes providing a PFAS elimination module as described herein and fluidly connecting the PFAS elimination module downstream of a PFAS separation stage.
A water treatment system comprises a source of water including one or more contaminants, an electrocoagulation cell including a housing defining a fluid flow conduit, an anode disposed within the fluid flow conduit, and a cathode disposed within the fluid flow conduit, the housing including an inlet fluidly connectable to the source of water and an outlet, a solids/liquid separation system having an inlet fluidly connectable to the outlet of the housing of the electrocoagulation cell, a solids-rich outlet, and a solids-lean outlet, and a ballast feed system configured to deliver a ballast to the solids/liquid separation system.
Systems and methods for treating water may involve a first electrochemical separation module that includes at least one ion exchange membrane having a first set of performance characteristics, and a second electrochemical separation module that includes at least one ion exchange membrane having a second set of performance characteristics that is different than the first set of performance characteristics. Performance characteristics may relate to at least one of water loss, electrical resistance, and permselectivity. Staged treatment systems and methods may provide improved efficiency.
C02F 1/469 - Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
B01D 61/48 - Apparatus therefor having one or more compartments filled with ion-exchange material
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
98.
ENHANCING WATER TREATMENT RECOVERY FROM RETENTION POND AT FERTILIZER PLANTS
26266 from the wastewater and form a pretreated wastewater, and a mixing chamber to dilute the pretreated wastewater with raw wastewater, and a filtration subsystem including a first filtration configured to receive the pretreated wastewater and remove particles to form a first effluent, a second filtration unit remove divalent ions from the first effluent and form a second effluent, and a third filtration unit configured to remove additional dissolved solids from the second effluent and form a third effluent suitable for discharge to the environment.
C02F 1/00 - Treatment of water, waste water, or sewage
B01D 61/00 - Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltrationApparatus, accessories or auxiliary operations specially adapted therefor
A system for the treatment of phosphate-containing wastewater comprises a pretreatment subsystem including a mixing chamber configured to mix a potassium-based salt with the wastewater to precipitate K2SiF6 from the wastewater, a solids-liquid separator to separate the precipitated K2SiF6 from the wastewater and form a pretreated wastewater, and a mixing chamber to dilute the pretreated wastewater with raw wastewater, and a filtration subsystem including a first filtration configured to receive the pretreated wastewater and remove particles to form a first effluent, a second filtration unit remove divalent ions from the first effluent and form a second effluent, and a third filtration unit configured to remove additional dissolved solids from the second effluent and form a third effluent suitable for discharge to the environment.
B01D 61/00 - Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltrationApparatus, accessories or auxiliary operations specially adapted therefor
Methods of monitoring a chemical dosing subsystem for treating a fluid in a waste collection system are disclosed. The methods include deploying at least one sensor to the waste collection system, transmitting to an external controller data for a measured parameter of the fluid or treating agent, and comparing a treatment regimen determined responsive to the data to a reference protocol to determine whether the chemical dosing subsystem requires adjustment. Methods of treating a fluid in a waste collection system having a chemical dosing subsystem are also disclosed. Waste treatment management systems including a chemical dosing subsystem, a sensing subsystem, and an external controller are also disclosed. Methods of retrofitting a waste treatment management system are also disclosed.
