Patents Assigned to Veolia Water Solutions & Technologies Support
  • Patent number: 9828262
    Abstract: A method of removing barium, calcium, strontium, and magnesium from frac flowback. A sulfate reagent and carbonate reagent are mixed with the frac flowback, causing barium, calcium, strontium, and magnesium to precipitate. The precipitants are crystallized and the resulting frac flowback and crystals are separated into relatively heavy solids and a stream of relatively light solids. The stream of relatively light solids is subjected to a further separation process that produces sludge that is recycled to aid in the crystallization process and a treated effluent which is recycled to the fracking operation or collected and used in another fracking operation.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: November 28, 2017
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Charles D. Blumenschein, Mark W. Hess, Kashi Banerjee
  • Publication number: 20170327387
    Abstract: Method and installation of thermal hydrolysis of sludges implementing a group of thermal hydrolysis reactors (71,72,73,74) characterized in that it comprises successions of cycles, each of these successions of cycles being dedicated to one of said thermal hydrolysis reactors, each cycle comprising: a step a) for conveying a batch of non-preheated sludges to be treated into a thermal hydrolysis reactor (71,72,73,74), said step for conveying comprising the continuous passage of the sludges of said batch of sludges into a dynamic mixer (3) into which recovery steam is injected; a step b) for injecting live steam into said thermal hydrolysis reactor (71,72,73,74) containing said batch of sludges so as to increase the temperature and the pressure prevailing in this reactor; a step c) of thermal hydrolysis of the batch of sludges in the thermal hydrolysis reactor; a step d) for emptying the content of the batch of hydrolyzed sludges of said thermal hydrolysis reactor towards a recovery vessel (13), and for concomit
    Type: Application
    Filed: October 30, 2015
    Publication date: November 16, 2017
    Applicant: Veolia Water Solutions & Technologies Support
    Inventors: Julien CHAUZY, Malik DJAFER, Cedric CRAMPON
  • Publication number: 20170312764
    Abstract: The present invention relates to a hydrocyclone which includes: a body (10) defining a hollow inner recess (11), said hollow inner recess (11) having an upper portion having a cylindrical cross-section (110) extended by a lower portion having a frusto-conical cross-section (111), the diameter of said frusto-conical cross-section (111) decreasing towards the lower portion of said body (10); an intake (12) for a mixture of liquid and solids leading into said cylindrical portion (110); an underflow outlet (13), for discharging said solids essentially separated from said liquid, wherein said underflow outlet is in communication with the lower end of said inner recess (11); an overflow outlet (15), for discharging said liquid essentially separated from said solids, wherein said overflow outlet is in communication with the upper end of said inner recess (11).
    Type: Application
    Filed: November 27, 2015
    Publication date: November 2, 2017
    Applicant: VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT
    Inventors: Jacques ROBERT, Thomas THOUVENOT, Nathalie VIGNERON-LAROSA
  • Publication number: 20170297924
    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 co-agulant 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: Application
    Filed: September 29, 2015
    Publication date: October 19, 2017
    Applicant: Veolia Water Solutions & Technologies Support
    Inventors: Abdelkader GAID, Malik DJAFER, Delia PASTORELLI
  • Publication number: 20170297940
    Abstract: Method and plant for treating water implementing a contact vessel (21) for putting water into contact with a granular adsorbent material and a clarification, granular adsorbent material is constituted by agglomerates of active carbon particles, said agglomerates having an average size of 200 ?m to 600 ?m and a specific surface area of 800 to 1000 m2/g, a screen (9) being provided in the upper part of the contact vessel (21) comprising a layer of porous material having a thickness of 1 to 5 mm and a cut-off threshold of 100 ?m to 200 ?m, said contact vessel (21) having a hopper-shaped lower part (21a), purging means (21b) and stirring means (22) to stir the content of the upper part of this contact vessel (21) without stirring the content of the lower hopper-shaped part.
    Type: Application
    Filed: April 13, 2017
    Publication date: October 19, 2017
    Applicant: Veolia Water Solutions & Technologies Support
    Inventors: Philippe SAUVIGNET, Abdelkader GAID
  • Publication number: 20170291839
    Abstract: A process for converting ammonium (NH4+) of a mainstream of a wastewater plant to dinitrogen gas (N2), including the consecutive steps of i.) removing biodegradable carbon compounds in the mainstream, ii.) converting ammonium (NH4+) in the mainstream to nitrite (NO2?) in an aerated biological process containing ammonium oxidizing bacteria (AOB) in a nitration vessel (133a-133d); and iii.) denitrifying the resulting stream from step ii.) to dinitrogen gas in an anammox vessel (200). Growth of nitrite oxidizing bacteria (NOB) in step ii.) is prevented by periodically subjecting the bacteria in said nitration vessel (133a-133d) to water suppressing growth of nitrite oxidizing bacteria (NOB).
    Type: Application
    Filed: September 24, 2015
    Publication date: October 12, 2017
    Applicant: Veolia Water Solutions & Technologies Support
    Inventors: Magnus Christensson, Thomas Welander, Maria Piculell
  • Patent number: 9758398
    Abstract: A process and system for determining injection rate of treatment chemicals to eliminate or reduce downstream noxious gas emissions in a wastewater collection system. The process and system provides for treatment chemical injection at a pumping station or directly on a force main wherein dosage is calculated based on current and historical data relative to the pumping station.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: September 12, 2017
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Vincent Parez, Jean-Luc Million
  • Publication number: 20170247999
    Abstract: 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: Application
    Filed: October 9, 2015
    Publication date: August 31, 2017
    Applicant: Veolia Water Solutions & Technologies Support
    Inventors: Mouloud HENDOU, Camille SAGNE, Cedrick FAVERO, Ludwig GIL, Christophe RIVAS
  • Publication number: 20170233271
    Abstract: A process for producing PHA comprises obtaining biomass produced in the course of biologically treating a first wastewater source containing RBCOD. The biomass is to be exploited with a second wastewater source having a different RBCOD content from the first wastewater source in order to accumulate and thereby produce PHA. Before subjecting the biomass to a PHA accumulation process, the biomass PHA accumulation potential is enhanced via an acclimation process with the second wastewater source. During acclimation, the biomass is subjected to repeated feast-famine periods. During each feast period, the biomass is exposed to a fraction of the second wastewater source. The RBCOD uptake and/or biomass respiration rate is directly or indirectly measured during each feast period. The famine period is maintained for a period of time that is at least two times greater than the length of time of the proceeding feast period.
    Type: Application
    Filed: August 6, 2015
    Publication date: August 17, 2017
    Applicant: VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT
    Inventors: Alan Gideon Werker, Simon Olof Harald Bengtsson, John Markus Hjort, Fernando Morgan-Sagastume, Mauro Majone, Francesco Valentino
  • Publication number: 20170225986
    Abstract: A biofilm process is disclosed for treating wastewater containing readily biodegradable dissolved organic matter GP (measured as chemical oxygen demand or COD) and producing surplus biomass from the biofilm process that includes an enhanced polyhydroxyalkanoate (PHA) content. The process comprises directing a wastewater influent containing the readily biodegradable COD (RBCOD) into a biofilm unit process.
    Type: Application
    Filed: July 31, 2015
    Publication date: August 10, 2017
    Applicant: VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT
    Inventors: Alan Gideon Werker, Lamija Karabegovic, Luca Markus Quadri, Monica Vanessa Arcos Hernandez, Carl Anton Borje Karlsson
  • Publication number: 20170210647
    Abstract: A method or process is provided for removing selenate from an ion-exchange or an adsorption media regenerant stream. The regenerant stream is processed in a nanofiltration membrane which produces a permeate and a reject stream containing the selenate. A reducing agent, such as iron, is mixed with the reject stream and this gives rise to an oxidation-reduction reaction that reduces the selenate to selenite. Thereafter, the method includes adsorbing the selenate onto an adsorbent, such as hydrous iron oxide. The adsorbent and adsorbed selenite is removed from the reject stream via a solids-liquid separation process.
    Type: Application
    Filed: January 17, 2017
    Publication date: July 27, 2017
    Applicant: VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT
    Inventors: Kashi Banerjee, Herve Buisson
  • Patent number: 9688555
    Abstract: A method of biologically treating wastewater and, at the same time, incorporating processes that aim to increase the PHA accumulation potential of biomass used in the treatment of the wastewater. The method includes biologically treating the wastewater and enhancing PHA accumulation potential of the biomass by subjecting the biomass to a primary feast-famine process where the biomass is subjected to repeated cycles of feast and primary famine conditions. From time-to-time, the method entails deviating from the primary feast-famine process to a secondary famine process. The secondary famine process comprises subjecting the biomass to secondary famine conditions for a period of time that is substantially greater than the average time period of the primary famine conditions.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: June 27, 2017
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Alan Gideon Werker, Fernando Morgan-Sagastume, Simon Olof Harald Bengtsson, Maria da Graca Ejarque Albuquerque Cordeiro Pereira
  • Publication number: 20170157540
    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: Application
    Filed: December 3, 2015
    Publication date: June 8, 2017
    Applicant: Veolia Water Solutions & Technologies Support
    Inventors: Emil SVENSSON, Kjell-Ake SVENSSON, Per LARSSON
  • Patent number: 9656895
    Abstract: Method for treating a fluid aqueous waste stream comprising a biodegradable organic substance, comprising—feeding said stream into a bioreactor containing a fluid which contains biomass;—reacting the biodegradable organic substance with the biomass in the bioreactor under essentially anaerobic conditions;—taking a first flow from the bioreactor and using the first flow as a feed to a membrane filtration unit, in which said feed is subjected to filtration, thereby forming a permeate stream and a retentate stream;—returning the retentate stream to the bioreactor;—taking a second flow from the bioreactor as feed to a sludge treatment unit, in which sludge treatment unit the second flow is separated into a third flow, having an increased organic substance content compared to the second flow, and a fourth flow, having a decreased organic substance content compared to the second flow.
    Type: Grant
    Filed: March 20, 2013
    Date of Patent: May 23, 2017
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Aurélie Grélot, Abraham Izaak Versprille
  • Patent number: 9650268
    Abstract: The invention relates to a water treatment device comprising a mixing tank comprising an inlet path (12) for an effluent to be treated, an optional inlet path (13) for reagents, a stirring source (14) for generating a turbulent stir in a given volume of said tank, an extraction path (15) for discharging sludge, and an extraction path (16) for treated effluent, and further comprising above and adjacent to the given volume, but below the treated-effluent outlet path, a settling structure (17) comprising a plurality of ducts extending from the bottom to the top and arranged in the form of a baffle so that no particle can flow through said layer along a rectilinear path.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: May 16, 2017
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Eric Barbier, Arnaud Genin
  • Publication number: 20170129785
    Abstract: Method for treating water by filtration on a bed of granular material in order to reduce its content in contaminants, said method comprising the steps for: making said water travel in transit in a reactor containing said bed in a upward flow at a speed that does not permit the fluidization of said bed but permits said material to migrate, as and when the filtration takes place, towards the lower part of said reactor, continuously removing a fouled granular material at the foot of the reactor, by means of a piping into which a gas is insufflated, said fouled granular material being constituted by granular material and contaminants adsorbed on said granular material; continuously or intermittently carrying out the physical cleansing of said fouled granular material thus removed, so as to obtain a cleansed granular material essentially rid of said contaminants; reinjecting the granular material thus cleansed into an upper part of said bed; characterized in that the granular material is an adsorbent granular mate
    Type: Application
    Filed: June 18, 2015
    Publication date: May 11, 2017
    Applicant: VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT
    Inventors: Abdelkader GAID, Philippe SAUVIGNET
  • Publication number: 20170129797
    Abstract: In order to treat a flow of waste water, there is applied to this flow, after at most an optional pre-treatment of screening/degritting or deoiling, a filtration treatment by means of microfiltration or ultrafiltration membranes, by causing the flow to circulate tangentially to the membranes at a velocity of at least 0.1 m/s, in the presence of an organic sequestering agent composed based on organic phosphate at a concentration that is effective for sequestering metal ions contained in the flow and minimizing the formation of calcium carbonate, with a differential pressure on either side of the membranes that is less than or equal to 5 bar.
    Type: Application
    Filed: June 23, 2015
    Publication date: May 11, 2017
    Applicant: Veolia Water Solutions & Technologies Support
    Inventors: Abdelkader GAID, Catherine DAINES-MARTINEZ, Sebastien LOGETTE, Christophe AMIEL
  • Patent number: 9630865
    Abstract: A method of treating wastewater includes removing BOD and ammonium from the wastewater. The wastewater is directed into a tank where it is mixed with mixed liquor or activated sludge from an activated sludge wastewater treatment system. The mixture of wastewater and mixed liquor or activated sludge forms a mixed liquor stream. The mixed liquor stream is directed to a ballasted flocculation system where suspended solids is removed from the wastewater. This produces a clarified effluent that is directed to a zeolite tank. Clarified wastewater from the ballasted flocculation system is directed into the zeolite tank and mixed with zeolite. Zeolite is effective to remove ammonium from the wastewater. Thus, the process as a whole is effective in removing suspended solids, soluble BOD as a result of mixing the mixed liquor or activated sludge with the wastewater, and ammonium.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: April 25, 2017
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Richard W. DiMassimo, Michael L. Gutshall, Abdelkader Gaid, Sandra Bernard
  • Publication number: 20170081202
    Abstract: A process is disclosed for recovering cyanide used to leach gold or silver from ore. In the course of leaching gold or silver from ore, a barren solution is generated. A portion of the barren solution containing sodium cyanide is recycled to the cyanidation process while blowdown from the barren solution is subjected to pre-treatment, UV photodissociation and pH adjustment. Ultimately, a volatile hydrocyanic acid is formed and is absorbed into a sodium hydroxide solution through the employment of a gas-filled membrane. This forms sodium cyanide that can be recycled and used in the cyanidation process to leach gold or silver from ore.
    Type: Application
    Filed: September 19, 2016
    Publication date: March 23, 2017
    Applicant: Veolia Water Solutions & Technologies Support
    Inventors: Kashi Banerjee, Herve Buisson
  • Publication number: 20160376175
    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: Application
    Filed: November 28, 2014
    Publication date: December 29, 2016
    Applicant: Veolia Water Solutions & Technologies Support
    Inventors: Thomas Welander, Maria Piculell