公开(公告)号：US20240059590A1

公开(公告)日：2024-02-22

申请号：US18270137

申请日：2020-12-31

Applicant: Veolia Environnement

Inventor： Romain Gandre ,  Bi Chen

IPC: C02F1/42 ,  C02F1/44 ,  B01J41/05 ,  B01J41/14 ,  B01J49/57 ,  B01J49/07

CPC classification number: C02F1/42 ,  C02F1/441 ,  B01J41/05 ,  B01J41/14 ,  B01J49/57 ,  B01J49/07 ,  C02F2303/16 ,  C02F2001/422 ,  C02F2103/365

Abstract: Method implementing resins for treating organic compounds in industrial wastewaters, said method comprising the steps of: during treatment cycles, pumping an industrial wastewater into a reactor containing an ion-exchange resin, letting said organic compounds being captured onto said resin and obtaining a treated wastewater at an outlet of said reactor; during regeneration cycles for restoring removal capacity of said resin, stopping said pumping of said industrial wastewater into said reactor, pumping a regeneration liquid into said reactor, letting said regeneration liquid desorb the organic compounds captured onto the resin, and obtaining an eluate containing said desorbed organic matter; recycling said eluate for using it as said regeneration liquid, characterized in that said resin is a strong base anionic ion exchange resin, and said regeneration liquid is an hypersaline solution.

公开(公告)号：US11760661B2

公开(公告)日：2023-09-19

申请号：US16759108

申请日：2018-10-24

Applicant: DDP SPECIALTY ELECTRONIC MATERIALS US, LLC. ,  DDP SPECIALTY ELECTRONIC MATERIALS US 8, LLC ,  DDP SPECIALTY ELECTRONIC MATERIALS US 5, LLC.

Inventor： Andrew M. Savo ,  Jay A. Miers, Jr. ,  Donna Deflavis ,  William Carlin ,  Matthew J. Roth

IPC: C02F1/42 ,  B01J49/07 ,  B01J49/06 ,  B01J39/04 ,  B01J39/20 ,  B01J41/04 ,  B01J41/14 ,  C08F212/08 ,  C08F212/36

CPC classification number: C02F1/42 ,  B01J39/04 ,  B01J39/20 ,  B01J41/04 ,  B01J41/14 ,  B01J49/06 ,  B01J49/07 ,  C08F212/08 ,  C08F212/36 ,  C02F2001/422 ,  C02F2001/425 ,  C02F2001/427 ,  C02F2303/16

Abstract: Provided is a process for treating water, wherein the water comprises dissolved ions that comprise an undesired cation, wherein the processes comprises



(a) providing a collection of specified polymeric beads

wherein 90% or more of the beads by volume are uniform beads;


(b) then passing the water through a bed of the collection of polymeric beads to exchange the undesired ion for ions (iv),
(c) then passing a regeneration solution comprising dissolved ions (v) of the same species as ions (iv) through the bed of the collection of polymeric beads to exchange ions (v) for the undesired ions.

公开(公告)号：US20220259077A1

公开(公告)日：2022-08-18

申请号：US17738082

申请日：2022-05-06

Applicant: Emerging Compounds Treatment Technologies, Inc.

Inventor： Steven E. Woodard ,  John C. Berry ,  Michael G. Nickelsen

IPC: C02F1/42 ,  B01D15/36 ,  B01D15/20 ,  B01J41/05 ,  B01J41/12 ,  B01J47/026 ,  B01J49/07 ,  B01J49/57

Abstract: A system for removing PFSAs and PFCAs from contaminated water using regenerable anion exchange resins includes at least one first anion exchange resin vessel which receives a flow of water contaminated with PFSAs and PFCAs. A first anion exchange resin vessel includes a first regenerable anion exchange resin therein which removes a majority of the PFSAs from the flow of water contaminated with PFSAs and PFCAs and produce a flow of water having a majority of the PFSAs removed. A second anion exchange resin vessel receives the flow of water having a majority of the PFSAs removed. The at least one second anion exchange resin vessel includes a second regenerable anion exchange resin therein which removes a majority of the PFCAs from the flow of water having a majority of PFSAs removed and produce a flow of treated water having a majority of the PFSAs and PFCAs removed.

公开(公告)号：US11227698B2

公开(公告)日：2022-01-18

申请号：US16772352

申请日：2018-12-14

Applicant: Electricite de France

Inventor： Christophe Bourgeois ,  Estelle Rioury

IPC: G21C19/30 ,  B01J49/07 ,  B01J39/05 ,  B01J49/53 ,  B01J41/07 ,  B01J49/06 ,  B01J47/02 ,  G21C17/02 ,  B01J49/57 ,  B01J47/022 ,  G21C17/022

Abstract: The present invention relates to a method for identifying the unit causing a raw water leak in a condenser of a thermal power plant consisting of n units.

公开(公告)号：US10752522B2

公开(公告)日：2020-08-25

申请号：US16105356

申请日：2018-08-20

Applicant: CHEMTREAT, INC.

Inventor： William H Henderson ,  John Philip Richardson ,  Vladimir Djukanovic

IPC: C02F1/42 ,  B01J41/05 ,  B01J41/14 ,  B01J47/02 ,  B01J49/57 ,  B01J20/34 ,  B01J20/32 ,  B01J49/07 ,  B01J47/016 ,  B01J20/02 ,  C02F103/34 ,  C02F101/10 ,  C02F1/28 ,  C02F1/74

Abstract: Methods for removing a target selenium entity from fluids by treating the fluid with a rare earth impregnated media containing an immobilized rare earth. The methods including obtaining a contaminated fluid comprising water and dissolved selenate; contacting the feed fluid with a rare earth impregnated media for removal of at least a portion of the selenate from the feed fluid thereby forming a treated fluid comprising less selenium than the feed fluid.

公开(公告)号：US10287186B2

公开(公告)日：2019-05-14

申请号：US15566652

申请日：2016-04-13

Applicant: Ovivo Inc.

Inventor： Gensbittel Dominique

IPC: C02F1/42 ,  B01J47/04 ,  B01J49/07 ,  B01J49/09 ,  B01J49/50

Abstract: In an ion-exchange separation system, a single regeneration column provides for separation of anion and cation resins and the regeneration of both cation and anion resins with a very low level of cross-contamination. After regeneration most of the anion layer in the column is withdrawn, and most of the cation layer is withdrawn, but a portion of each layer adjacent to the interface between the layers remains in the column, to isolate these cross-contaminated portions from the regenerated resins. The withdrawn, regenerated anion and cation resins are placed back into the working vessel.

公开(公告)号：US09776892B2

公开(公告)日：2017-10-03

申请号：US14083945

申请日：2013-11-19

Applicant: Ovivo Luxembourg S.å.r.l.

Inventor： Dominique Gensbittel

IPC: C02F1/42 ,  B01J49/85 ,  B01D15/36 ,  B01J41/05 ,  B01J47/022 ,  B01J49/07 ,  C02F101/10 ,  C02F103/04

CPC classification number: C02F1/42 ,  B01D15/363 ,  B01J41/05 ,  B01J47/022 ,  B01J49/07 ,  B01J49/85 ,  C02F2001/422 ,  C02F2101/10 ,  C02F2101/108 ,  C02F2103/04 ,  C02F2301/08 ,  C02F2303/16

Abstract: A process is described for treating water, in particular for obtaining ultrapure water, in which a decationized water stream is passed at least through a first strong base anion exchange bed and a second strong base anion exchange bed, which is arranged downstream, in particular directly downstream, of the first strong base anion exchange bed. Furthermore, a water treatment system and a counter-current ion exchange unit for carrying out such a process are described.

公开(公告)号：US4282162A

公开(公告)日：1981-08-04

申请号：US115803

申请日：1980-01-28

Applicant: Jurgen Kuhls

Inventor： Jurgen Kuhls

IPC: B01D15/00 ,  B01D15/04 ,  B01J20/34 ,  B01J47/00 ,  B01J47/014 ,  B01J49/00 ,  B01J49/07 ,  C07C51/47 ,  C07C51/42 ,  C08F1/88

CPC classification number: B01J49/0013 ,  B01J47/003 ,  C07C51/47 ,  C08F6/16

Abstract: To elute fluorinated emulsifying acids, especially perfluoro-carboxylic acids, from basic anion exchangers a mixture of dilute mineral acid and polar organic solvents is used. The solvent should be miscible with water preferably to an extent of at least 40%. By this process the required amount of eluent and the time of elution can be reduced while simultaneously the amount of recovered emulsifying acid can be improved. The process is especially suitable for the recovery of fluorinated emulsifiers in the coagulation or concentration of fluoropolymer latices.

Abstract translation: 为了从碱性阴离子交换剂中洗脱含氟乳化酸，特别是全氟羧酸，使用稀无机酸和极性有机溶剂的混合物。 溶剂应与水混溶，优选至少为40％。 通过该方法，可以减少所需量的洗脱液和洗脱时间，同时可以提高回收的乳化酸的量。 该方法特别适用于在含氟聚合物胶乳的凝结或浓缩中回收氟化乳化剂。

公开(公告)号：US20210283593A1

公开(公告)日：2021-09-16

申请号：US16321609

申请日：2017-08-25

Applicant: John C. Rohanna

Inventor： John C. Rohanna

IPC: B01J49/57 ,  B01J49/07 ,  B01J47/016 ,  B01J41/05

Abstract: Provided is a method of removing sodium from a collection of sodium-laden resin beads comprising the steps of (a) providing the collection of sodium-laden resin beads, wherein the resin beads comprise one or more vinyl polymers having quaternary ammonium groups; wherein cation exchange resin, if present in the collection of resin beads, are present in an amount of 0 to 0.5% by weight based on the weight of the collection of resin beads; wherein 90 mole % or more of the quaternary ammonium groups are each associated with a hydroxide anion; wherein sodium is present in an amount of more than 100 ppb by weight, based on the weight of the collection of sodium-laden resin beads, and (b) bringing the collection of sodium-laden resin beads into contact with aqueous ammonium hydroxide to form a mixture (b).

公开(公告)号：US20210272711A1

公开(公告)日：2021-09-02

申请号：US16772352

申请日：2018-12-14

Applicant: Electricite de France

Inventor： Christophe Bourgeois ,  Estelle Rioury

IPC: G21C19/30 ,  B01J39/05 ,  B01J41/07 ,  B01J47/022 ,  B01J49/07 ,  B01J49/06 ,  B01J49/53 ,  B01J49/57 ,  G21C17/022

Abstract: The present invention relates to a method for identifying the unit causing a raw water leak in a condenser of a thermal power plant consisting of n units.