Patents Assigned to Veolia Water Solutions & Technologies Support
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Patent number: 11267736Abstract: Process for treating an aqueous fluid whereby a biogas is produced in an installation comprising a bioreactor and a separate container, the process comprising (i) a bioreactor feeding stage; (ii) a batch reaction stage, wherein biogas is formed and formed biogas is temporarily stored in the separate container, and at least one further stage (iii) comprising a settling stage and/or an aqueous fluid effluent discharge stage, wherein the biogas stored in the separate container is used to reduce fluctuations in a biogas exit flow from the installation. An installation for carrying out the process and the use thereof.Type: GrantFiled: September 20, 2018Date of Patent: March 8, 2022Assignee: Veolia Water Solutions & Technologies SupportInventors: Santiago Pacheco-Ruiz, Jeronimus Gerardus Maria Van Der Lubbe, Thierry Alphonse Arnaud
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Patent number: 11230479Abstract: The present invention relates to a system and process for treating a feedwater wherein the system includes at least one RO or nanofiltration unit that receives a feed under high pressure and produces a concentrate that is directed to and held at low pressure in a concentrate accumulator. Generally the permeate or the inlet feedwater is maintained at a constant flow rate. Periodically the system is switched from a mode 1 or normal operating process to a mode 2 where the concentrate is drained from the concentrate accumulator. However, in mode 2, the feedwater is still directed into the system and through the RO or nanofiltration unit which produces the permeate and the concentrate.Type: GrantFiled: January 8, 2018Date of Patent: January 25, 2022Assignee: Veolia Water Solutions & Technologies SupportInventors: Bernard Roy Mack, Dale L. Wynkoop
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Patent number: 11230478Abstract: A method for treating produced water in a system for treating wastewater is disclosed. The system includes a reverse osmosis unit for removing dissolved solids. The reverse osmosis unit produces a permeate and concentrate. To reduce the fouling potential of the membranes associated with the reverse osmosis unit and/or to increase membrane lifetime and/or to increase system recovery, at least a portion of the concentrate is recycled and mixed with the wastewater stream at a point upstream of the reverse osmosis unit.Type: GrantFiled: December 3, 2018Date of Patent: January 25, 2022Assignee: Veolia Water Solutions & Technologies SupportInventors: John A. Korpiel, LNSP Nagghappan, Brad Biagini
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Publication number: 20220017392Abstract: Water treatment method for simultaneous abatement of carbon, nitrogen and phosphorus, implemented in a sequencing batch moving bed biofilm reactor (SBMBBR) comprising carriers suitable for the development of a biofilm. The method comprises sequences of successive treatments, each treatment sequence comprising: an initial phase of anaerobic treatment, said initial phase of anaerobic treatment being followed by at least one aerobic/anoxic cycle consisting of: an aerobic treatment phase so as to obtain an ammonium ion concentration that does not pass below a threshold concentration of ammonium ions; and a phase in which the biofilm is placed, at least locally, under anoxic conditions, this phase being concomitant with or posterior to said aerobic treatment phase; the threshold concentration of ammonium ions being calculated to allow the development of Anammox microorganisms during the phase in which the biofilm is placed, at least locally, under anoxic conditions.Type: ApplicationFiled: December 2, 2019Publication date: January 20, 2022Applicant: Veolia Water Solutions & Technologies SupportInventors: Aude FOURCANS, Philippe ZOZOR, Tristan GERMAIN, Hugues HUMBERT, Romain LEMAIRE
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Publication number: 20210355012Abstract: The present invention relates to a mainstream deammonification process for removing ammonium from wastewater that suppresses NOB growth and produces a sludge having good settling characteristics, the process comprising: clarifying the wastewater stream in a primary clarifier (12) and producing a primary effluent; directing a first portion of the primary effluent to a biological treatment reactor (14) and removing carbon to produce treated wastewater; directing treated wastewater into an integrated fixed film activated sludge (IFAS) deammonification reactor (16) integrating nitritation and anammox processes and that is provided with intermittent aeration; directing a second portion of the primary effluent to the IFAS deammonification reactor (16) by-passing the biological treatment reactor (14), and injecting this second portion only during periods of air off and refraining from injecting during periods of air on, directing the IFAS deammonification reactor (16) effluent to a secondary clarifier (18) and produType: ApplicationFiled: October 8, 2019Publication date: November 18, 2021Applicant: Veolia Water Solutions & Technologies SupportInventors: Romain Lemaire, Hong W. Zhao
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Publication number: 20210322929Abstract: A high recovery variable volume reverse osmosis system where the volume of concentrate cycled through the RO system is reduced in response to recovery levels increasing. By reducing the volume of concentrate cycled through the RO system, this reduces the cycle time of highly saturated concentrate passing through the RO system. Reducing the cycle time of concentrate passing through the RO system tends to minimize or reduce membrane scaling.Type: ApplicationFiled: August 13, 2019Publication date: October 21, 2021Applicant: Veolia Water Solutions & Technologies SupportInventors: Bernard Roy MACK, Kevin ROLLINGS
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Patent number: 11122783Abstract: A device (1) for separating segments (2) in a tank. The tank system includes a circular tank system with water flow for the farming of fish, said device being movable and comprising a plurality of preferably two element units, which are joined so as to form a V-shape seen from above. Further, the invention comprises the use of the device for the farming of edible fish.Type: GrantFiled: August 2, 2017Date of Patent: September 21, 2021Assignee: VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT, SASInventor: Bent Urup
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Publication number: 20210206661Abstract: Plant (1) intended for the treatment of a fluid (15) by passage of an upflow (90) of said fluid (15) through a bed of adsorbent media particles (13). The plant (1) comprises a reactor (2) intended to contain the bed of adsorbent media particles (13), comprising: a means for injecting and distributing fluid to be treated, disposed at the bottom part, for forming the upflow (90) of fluid (15) within the reactor (2) and enabling the fluidization and expansion of said bed of adsorbent media particles (13); a means for recovering treated fluid; a means for deflecting fluid (20) disposed at the top part, intended for reducing the speed of the upflow (90) of fluid (15) and enabling the formation of a tranquil zone (27), said means for recovering treated fluid being disposed downstream from said tranquil zone (27).Type: ApplicationFiled: May 22, 2019Publication date: July 8, 2021Applicant: Veolia Water Solutions & Technologies SupportInventor: Abdelkader Gaid
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Publication number: 20210163327Abstract: A process for treating frac flowback that contains barium, naturally occurring radioactive materials (NORM) and hardness for minimizing the amount of sludge produced that contains hazardous levels of NORM by employing a dual stage precipitation process. In the first stage a sulfate source is mixed with the frac flowback and barium sulfate and NORM is precipitated, the frac flowback is subjected to a solids-liquid separation process to produce a first effluent and a first sludge. In the second stage hardness is precipitated from the first effluent by addition of an alkali reagent, said first effluent is also subjected to solids-liquid separation producing a second effluent and a second sludge. The first sludge is recycled and mixed with the frac flowback and the sulfate source in a sufficient amount to maintain the NORM concentration in the second sludge at or below a threshold level.Type: ApplicationFiled: July 8, 2019Publication date: June 3, 2021Applicant: Veolia Water Solutions & Technologies SupportInventors: Kashi Banerjee, Charles Blumenschein, Hillary Kronebusch, Sarah Petrovich
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Patent number: 11021385Abstract: Sludge dewatering device that makes it possible to achieve a high degree of dryness while retaining a limited energy consumption and limited industrial risks, comprising at least one first plate (21a) equipped with a first electrode (23a), and at least one second plate (21b) equipped with a second electrode (23b), wherein the first and second plates (21a, 21b) define a chamber (22) configured for receiving a sludge to be dewatered (10a), wherein the first and second electrodes (23a, 23b) are configured for establishing an electric field within the chamber (22), wherein the chamber (22) is equipped with at least one discharge port (32, 34), provided in the bottom third of the chamber (22), configured for discharging a filtrate (15a, 16a), and wherein the chamber (22) is equipped with at least one injection port (33), provided in the top third of the chamber (22), configured for injecting the pressurized purge fluid (11a) into the chamber (22).Type: GrantFiled: October 11, 2016Date of Patent: June 1, 2021Assignee: VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORTInventors: Laetitia Maillet, Benjamin Herbreteau, Vincent Georgeaud
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Patent number: 11008240Abstract: The instant application is directed towards methods for removing sulfide from a wastewater stream. The pH of the wastewater stream is adjusted to between 7.0 and 8.0. A first oxidizing agent is mixed with the wastewater stream, oxidizing the sulfide to elemental sulfur. The wastewater stream is then softened by mixing lime with the wastewater stream. The addition of lime further raises the pH of the wastewater stream to 10.0 or higher, and converts the elemental sulfur to soluble sulfide (S2-) and/or thio-sulfate. Calcium carbonate is precipitated and sulfide (S2-) and/or thio-sulfate is adsorbed thereon. Thereafter, the wastewater stream is directed to a solids-liquid separation process, which separates the calcium carbonate and adsorbed sulfide (S2-) and/or thio-sulfate from the wastewater stream. The solids-liquid separator produces an effluent that includes residual elemental sulfur.Type: GrantFiled: February 15, 2017Date of Patent: May 18, 2021Assignee: Veolia Water Solutions & Technologies SupportInventors: Kashi Banerjee, Srikanth Muddasani, David E. Parker, Bernard Roy Mack
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Patent number: 11000791Abstract: A rotary disc filter includes one or more filter discs secured to a rotary drum and include a series of circumferentially spaced backwash guides disposed in the filter disc. During backwashing, the backwash guides function to engage a mixture of backwash and suspended solids and guide or direct the mixture to a sludge trough disposed in the disc filter. The backwash guides generally assure that a greater percentage of the backwash and suspended solids mixture end up in the solids trough.Type: GrantFiled: March 6, 2019Date of Patent: May 11, 2021Assignee: Veolia Water Solutions & Technologies SupportInventors: Johan Gustav Alexander Jibert, Emil Svensson, Filip Thysell, Per Larsson
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Patent number: 10981820Abstract: Sludge dewatering process assisted by flocculating reactant, said process comprising an injection of flocculating reactant into the sludge and a step of dewatering said sludge, characterized in that it comprises a preliminary step that consists in mixing said sludge in a mixer (4) comprising a cylindrical chamber (4a) equipped with blades (4c) rotatably mounted on a shaft (4b) rotating at a speed of rotation of between 500 rpm and 4000 rpm, so as to destructure the sludge and reduce the viscosity thereof, and in discharging the sludge from said mixer (4) via a network (11) to said dewatering step, and in that it comprises a step of depressurizing said mixer (4) and said network giving rise to the lysis, by cavitation, of said sludge, said depressurizing step being carried out over a period of at least 0.1 second. Corresponding plant.Type: GrantFiled: May 15, 2017Date of Patent: April 20, 2021Assignee: Veolia Water Solutions & Technologies SupportInventors: Cédric Crampon, Malik Djafer, Éric Guibelin
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Publication number: 20210094851Abstract: The present invention provides a method of controlling a wastewater treatment plant. The plant comprises at least one process tank and an aeration structure configured for aeration of the at least one process tank. The method comprises alternating steps of increasing aeration to the at least one process tank when a first event occurs, wherein the first event is one of when a first threshold value of a first tank parameter is reached and when a first predetermined time period has expired, and decreasing aeration to the at least one process tank when a second event occurs, wherein the second event is one of when a second threshold value of a second tank parameter is reached and when a second predetermined time period has expired.Type: ApplicationFiled: June 29, 2018Publication date: April 1, 2021Applicant: Veolia Water Solutions & Technologies SupportInventors: Anna Katrine Vangsgaard, Romain Louis Gilles Lemaire, Bartholomeus Franciscus Smets, Sara Elisabet Margareta Ekström
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Patent number: 10961836Abstract: The present invention is concerned with the treatment of produced water, that may be obtained from a chemically enhanced oil recovery process using viscosity-increasing polymeric compounds. Said treatment comprises particularly the steps of obtaining a produced water, such as from an oil-water mixture recovered from an oil-bearing formation, wherein the produced water comprises the viscosity-increasing polymeric compounds; and, of directing the produced water to a specific filtration device, and subjecting the produced water to filtration, for obtaining a retentate stream and a permeate stream. Said process allows particularly obtaining a permeate comprising the viscosity-increasing polymeric compounds, said permeate being substantially free of suspended solids, free oil and emulsified oil.Type: GrantFiled: October 9, 2015Date of Patent: March 30, 2021Assignee: Veolia Water Solutions & Technologies SupportInventors: Mouloud Hendou, Camille Sagne, Cedrick Favero, Ludwig Gil, Christophe Rivas
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Publication number: 20210087087Abstract: Process for treating an aqueous fluid whereby a biogas is produced in an installation comprising a bioreactor and a separate container, the process comprising (i) a bioreactor feeding stage; (ii) a batch reaction stage, wherein biogas is formed and formed biogas is temporarily stored in the separate container, and at least one further stage (iii) comprising a settling stage and/or an aqueous fluid effluent discharge stage, wherein the biogas stored in the separate container is used to reduce fluctuations in a biogas exit flow from the installation. An installation for carrying out the process and the use thereof.Type: ApplicationFiled: September 20, 2018Publication date: March 25, 2021Applicant: Veolia Water Solutions & Technologies SupportInventors: Santiago PACHECO-RUIZ, Jeronimus Gerardus Maria VAN DER LUBBE, Thierry Alphonse ARNAUD
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Patent number: 10946318Abstract: The invention relates to a filter panel (1) for a drum filter (2) which is used for filtering off solid particles from a liquid. The filter panel (1) comprises a first side (3) being adapted to be attached to a drum (4) of said drum filter (2), a second side (5) being adapted to receive a filter cloth (6), and a plurality of through holes (7) extending from said first side (3) to said second side (5), each hole (7) defining one or more side walls (8). The filter panel (1) is characterized in that at least one of said holes (7) comprises an inclined side wall (8). The invention also relates to a drum filter (2) for filtering liquid.Type: GrantFiled: June 21, 2016Date of Patent: March 16, 2021Assignee: Veolia Water Solutions & Technologies SupportInventors: Filip Thysell, Emil Svensson, Kjell-Ake Svensson, Per Larsson
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Patent number: 10941046Abstract: The present invention relates to a process for producing sodium bicarbonate crystals. Sodium carbonate derived from TRONA ore is mixed with a treated mother liquor produced in a downstream process to form a sodium carbonate solution. The sodium carbonate solution is subjected to a crystallization process that produces sodium bicarbonate crystals. The sodium bicarbonate crystals are separated from the sodium carbonate solution to form a mother liquor that includes silica. To remove the silica in the mother liquor, the mother liquor is directed to a reactor where an aluminum salt is mixed with the mother liquor to precipitate hydrous aluminum oxide which adsorbs silica thereon. The hydrous aluminum oxide with adsorbed silica is removed from the mother liquor. This produces the treated mother liquor that is mixed with the sodium carbonate and which forms the sodium carbonate solutions.Type: GrantFiled: September 13, 2017Date of Patent: March 9, 2021Assignee: Veolia Water Solutions & Technologies SupportInventors: Bernard Roy Mack, Kashi Banerjee
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Publication number: 20210024396Abstract: The present invention relates to a method of treating sludge containing phosphorus, ammonia and magnesium and enhancing the dewaterability of the sludge. The sludge is directed into a biological fermenter operated under anaerobic conditions. By controlling the temperature of the sludge in the fermenter or the hydraulic retention time of the sludge in the fermenter, phosphorus, ammonia and magnesium is released from the solids in the sludge into a liquid forming a part of the sludge. Sludge from the fermenter is subjected to a solids-liquid separation process that produces a concentrated sludge and a liquid. The concentrated sludge or separated solids is directed to a thermal hydrolysis reactor that thermally hydrolyzes the concentrated sludge. After thermally hydrolyzing the concentrated sludge, the concentrated sludge is directed to an anaerobic digester that anaerobically digests the concentrated sludge.Type: ApplicationFiled: December 18, 2018Publication date: January 28, 2021Applicant: Veolia Water Solutions & Technologies SupportInventors: Hong W. Zhao, Sudhakar Viswanathan, Luther G. Wood, Brad Mrdjenovich, Richard W. DiMassimo, James McQuarrie
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Publication number: 20200376437Abstract: A filtration apparatus for treating a fluid comprises a vessel, a first partition plate dividing the vessel into first and second chambers and defining a through hole, and a filtration module located within the second chamber and including a body section defining an outer diameter which is greater than the diameter of the through hole in the first partition plate. The apparatus further comprises a reducing connector having a first end secured to the body section of the filtration module and a second end sealed relative to the through hole in the first partition plate to permit communication between the filtration module and the first chamber. In a disclosed embodiment the apparatus includes a second partition plate such that the vessel is divided into first, second and third chambers, wherein the filtration module is mounted between the partition plates.Type: ApplicationFiled: August 17, 2020Publication date: December 3, 2020Applicant: Veolia Water Solutions & Technologies SupportInventor: Neville Ernest Lange