Patents Assigned to Veolia Water Solutions & Technologies Support
  • Publication number: 20200290910
    Abstract: 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: Application
    Filed: February 15, 2017
    Publication date: September 17, 2020
    Applicant: Veolia Water Solutions & Technologies Support
    Inventors: Kashi Banerjee, Srikanth Muddasani, David E. Parker, Bernard Roy Mack
  • Publication number: 20200290911
    Abstract: 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: Application
    Filed: May 15, 2017
    Publication date: September 17, 2020
    Applicant: Veolia Water Solutions & Technologies Support
    Inventors: Cédric Crampon, Malik Djafer, Éric Buibelin
  • Patent number: 10773986
    Abstract: A method of treating produced water, such as frac flowback, that includes pre-treating the produced water which is followed by a crystallization process that produces a condensate that typically includes ammonia and benzene. The ammonia and benzene concentration is reduced by biologically nitrifying and denitrifying the condensate. This produces an effluent that is directed to a solids-liquid separation process that removes suspended solids. The solids-liquid separation process produces another effluent that is subjected to a benzene polishing process that further reduces the benzene concentration of the effluent produced by the solids-liquid separation process.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: September 15, 2020
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Brad Biagini, Charles Blumenschein, Caroline Dale, Hillary Kronebusch
  • Patent number: 10773213
    Abstract: A filtration apparatus (10) for treating a fluid comprises a vessel (12), a first partition plate (18) dividing the vessel into first and second chambers (22, 26) and defining a through hole (40), and a filtration module (30) located within the second chamber (26) and including a body section (32) defining an outer diameter which is greater than the diameter of the through hole (40) in the first partition plate (18). The apparatus (10) further comprises a reducing connector (36) having a first end secured to the body section (32) of the filtration module (30) and a second end sealed relative to the through hole (40) in the first partition plate (18) to permit communication between the filtration module (30) and the first chamber (22). In a disclosed embodiment the apparatus (10) includes a second partition plate (20) such that the vessel is divided into first, second and third chambers (22, 24, 26), wherein the filtration module (30) is mounted between the partition plates (18, 20).
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: September 15, 2020
    Assignee: Veolia Water Solutions & Technologies Support
    Inventor: Neville Ernest Lange
  • Publication number: 20200282345
    Abstract: 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: Application
    Filed: March 6, 2019
    Publication date: September 10, 2020
    Applicant: Veolia Water Solutions & Technologies Support
    Inventors: Johan Gustav Alexander Jibert, Emil Svensson, Filip Thysell, Per Larsson
  • Publication number: 20200277210
    Abstract: The present invention relates to a process for in-situ cleaning of a gas-liquid separator of an anaerobic bioreactor, comprising directing a gas flow in the bioreactor in order to create a scouring effect from turbulent fluid flows resulting in the cleaning of at least a part of the gas-liquid separator. The invention further relates to a process for treating a fluid aqueous waste stream, wherein use is made of the in-situ cleaning process. The invention further relates to a bioreactor suitable for carrying out a process according to the invention.
    Type: Application
    Filed: January 6, 2016
    Publication date: September 3, 2020
    Applicant: Veolia Water Solutions & Technologies Support
    Inventor: Robertus Johannes FRANKIN
  • Patent number: 10759685
    Abstract: The present invention concerns a process for treating waters containing at least two different dissolved inorganic salts which do not precipitate and/or crystallize in the same conditions by precipitation and ballasted flocculation, in which the ballast is produced in situ.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: September 1, 2020
    Assignee: VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT
    Inventors: Charles D. Blumenschein, Stephanie Mauchaufee, Eric Barbier
  • Patent number: 10752520
    Abstract: A water or wastewater treatment process that includes a dissolved air flotation process for removing suspended solids from influent water or mixed liquor. In one process, the dissolved air flotation process is carried out in the absence of adding a coagulant or a flocculant, but yet produces TSS removal efficiencies comparable to those achieved by conventional dissolved air flotation processes that employ a coagulant and a flocculant. In other processes, a coagulant and/or a flocculant is added directly to the mixing zone of a dissolved air flotation system or is added via a pressurized white water injection system. In another process, the use of a coagulant and a flocculant is useful in removing TSS and reducing the concentration of phosphorus in the water being treated.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: August 25, 2020
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Abdelkader Gaid, Malik Djafer, Delia Pastorelli
  • Patent number: 10729994
    Abstract: A disc filter includes a filtrate holding tank disposed below a series of disc-shaped filter members supported on a drum. Filtrate from the holding tank is used to backwash filter media on the disc-shaped filter members. Filtrate is discharged from the holding tank via a filtrate conduit. Bypass water is directed through a bypass conduit in the disc filter and mixed with the filtrate downstream of the filtrate holding tank. This assures that the filtrate used to backwash the filter media does not include bypass water.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: August 4, 2020
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Emil Svensson, Kjell-Ake Svensson, Per Larsson
  • Patent number: 10723643
    Abstract: A method or process for treating wastewater containing high organics, silica, boron, hardness, and suspended and dissolved solids. The method includes degasifying the wastewater for the removal of dissolved gases and thereafter chemically softening the wastewater. After the chemical softening step, the wastewater is directed through a media filter or membrane which removes additional solids and precipitants. Thereafter the wastewater is directed through a sodium ion exchange that further softens the wastewater. The effluent from the ion exchange is directed through a cartridge filter and the effluent from the cartridge filter is directed through one or more reverse osmosis units. At a selected phase of the process, prior to the wastewater reaching the reverse osmosis unit or units, the pH of the wastewater is raised and maintained such that the pH of the wastewater reaching a reverse osmosis unit is at a pH greater than 10.5.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: July 28, 2020
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Lnsp Nagghappan, John A. Korpiel
  • Patent number: 10669178
    Abstract: The present invention relates to a method for treating industrial water containing organic matter, said method comprising: a step of physical separation producing wastes and an effluent; a step of adsorption of at least one part of said organic matter present in said effluent on at least one adsorbent resin chosen from the group comprising the non-ionic cross-linked resins and the microporous carbon resins; a step of reverse osmosis filtration downstream from said adsorption step.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: June 2, 2020
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Mouloud Hendou, Camille Sagne
  • Patent number: 10662098
    Abstract: The invention pertains to a method (200, 300, 400) of at least partly removing at least one micropollutant from wastewater (104) comprising carbogenous compounds and at least one micropollutant.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: May 26, 2020
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Magnus Christensson, Thomas Welander
  • Publication number: 20200155972
    Abstract: The invention relates to a water treatment plant which comprises means (38) for supplying the water to be treated, means (31) for supplying coagulant reagent (21), a flocculation-decantation device (1) which has means (32) for dispensing the flocculant reagent, means (33) for distributing ballast, means (39d) for extracting decantation sludge and means (9) for discharging water that has been treated, a line (8) for supplying coagulated water to the flocculation-decantation device (1), means (24) for separating the ballast contained in the ballasted sludge followed by means (36) for recycling the ballast back into said flocculation-decantation device (1), characterised in that said device (1) comprises an outer tank (2) that has a first hopper (4), and at least one inner tank (3) that has a second hopper (5) and is arranged inside said outer tank (2); the inner tank (3) receiving the flocculant and the ballast and comprising stirring means (10), wherein a peripheral space is disposed between the inner tank (3)
    Type: Application
    Filed: June 25, 2018
    Publication date: May 21, 2020
    Applicant: Veolia Water Solutions & Technologies Support
    Inventors: Abdelkader GAID, Hervé PAILLARD, Philippe SAUVIGNET
  • Publication number: 20200131059
    Abstract: The invention relates to a water treatment plant comprising: means (1) for supplying water for treatment, wherein said water has been coagulated previously, a flocculation-decantation device (11) having means (5) for dispensing at least one flocculant reagent, means (6) for dispensing at least one ballast, means (20d) for extracting decantation sludge, means (9) for discharging the treated water, means (14) for separating said ballast contained in the ballasted sludge, and means (8) for recycling the ballast that has been cleaned in this manner back into the flocculation-decantation device (11), characterised in that: said flocculation-decantation device (11) has a single tank (12) in the lower portion of which a stirring mechanism (13) is arranged; wherein said single tank (2) comprises slats (10) in its upper portion; and said slats are separated from the stirring mechanism (13) by a distance “d” which is between approximately 0.5 metres and approximately 3 metres.
    Type: Application
    Filed: June 25, 2018
    Publication date: April 30, 2020
    Applicant: Veolia Water Solutions & Technologies Support
    Inventors: Abdelkader GAID, Hervé PAILLARD, Philippe SAUVIGNET
  • Patent number: 10626024
    Abstract: The present invention concerns a nozzle for injecting pressurized water containing a dissolved gas, said nozzle comprising: a cylindrical intake chamber (20) for said water; a cylindrical expansion chamber (30) comprising a part (301) communicating with said intake chamber (20) by an orifice (401) and an outlet; a diffusion chamber (60) of truncated conical section communicating with the outlet of said expansion chamber (30) and widening out from said expansion chamber; said nozzle comprising means for putting the stream of water that flows out of said expansion chamber (30) into rotation.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: April 21, 2020
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Thomas Thouvenot, Nathalie Vigneron-Larosa, Nicolas Roux
  • Patent number: 10626034
    Abstract: A carrier element (1; 10; 20) for growth of biofilm thereon is designed for free-flowing in liquid to be purified and has surfaces (3; 13) for biofilm growth which are protected from the abrasion from other carrier elements or surfaces in a container containing the liquid to be purified by ridges (4; 12) having a height corresponding to a desired thickness of a biofilm intended to grow on the protected surfaces (3; 13). The ratio between the surfaces (3; 13) for biofilm growth and the area of the ridges ranges from 1:1 to 1:20.
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: April 21, 2020
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Thomas Welander, Maria Piculell
  • Publication number: 20200095146
    Abstract: The present invention concerns a method for biological treatment of carbon, nitrogen and optionally phosphorus in water, in a reactor system (1) comprising a sequencing batch reactor (SBR) (2) and a moving bed biofilm reactor (MBBR) (3). The method comprises a step (10) of filling said SBR reactor (2) with water to be treated (5), a step (20) of anoxic/aerobic biological treatment in said reactor system (1) and a step (30) of discharging treated water (35) from said SBR reactor (2). The anoxic/aerobic biological treatment step (20) comprises: a biological treatment (210) under largely anoxic conditions in the SBR reactor (2), producing a first effluent (215), a biological treatment (220) under aerobic conditions in the MBBR reactor (3), producing a second effluent (225), and a continuous recirculation of the first and second effluents. The present invention also concerns a corresponding facility.
    Type: Application
    Filed: May 22, 2018
    Publication date: March 26, 2020
    Applicant: Veolia Water Solutions & Technologies Support
    Inventors: Romain Lemaire, Tristan Germain, Daniel Lamarre
  • Patent number: 10589201
    Abstract: A frame-type disc filter (100) is provided with a bypass water collector (33) disposed adjacent an inlet to the disc filter. Influent water overflows the inlet into the bypass water collector. A conduit is communicatively connected to the bypass water collector for directing the bypass water from the frame-type disc filter to an effluent channel that is independent of the frame-type disc filter.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: March 17, 2020
    Assignee: Veolia Water Solutions & Technologies Support
    Inventor: Per Larsson
  • Publication number: 20200071204
    Abstract: The method and corresponding installation allow seawater to be biologically treated in order to purify it. The use of bioflocculation make it possible to avoid using exogenous coagulation and/or flocculation agents, allows a significant reduction in the clogging power of the water treated, allows an improvement of the yield and a reduction of the quantities of sludge produced to be treated then discharged.
    Type: Application
    Filed: December 28, 2017
    Publication date: March 5, 2020
    Applicant: Veolia Water Solutions & Technologies Support
    Inventors: Jerome LEPARC, Abdelkader GAID, Fabien VERGNOLLE
  • Publication number: 20200017383
    Abstract: The invention relates to a method for the treatment of a filtrate (1a-1c) from an anaerobic membrane bioreactor (2), comprising reducing the pH of the filtrate (1a) from the anaerobic membrane bioreactor and subjecting the filtrate having the reduced pH to a reverse osmosis treatment or a nanofiltration treatment (3), forming a reverse osmosis or nanofiltration permeate (4) and a reverse osmosis or nanofiltration concentrate (5) whilst keeping the filtrate (1a-1c) from the anaerobic membrane bioreactor (2) essentially anaerobic. The invention further relates to an installation suitable to carry out a method according to the invention and to a process for obtaining purified water and/or nutrients for plants or animals.
    Type: Application
    Filed: December 20, 2017
    Publication date: January 16, 2020
    Applicant: Veolia Water Solutions & Technologies Support
    Inventors: Barry Heffernan, Robertus Johannes Frankin