公开(公告)号：US20200156968A1

公开(公告)日：2020-05-21

申请号：US16628623

申请日：2018-07-03

Applicant: CHEMTREAT, INC

Inventor： William Henderson ,  Vladimir Djukanovic ,  Nicholas Saymour

IPC: C02F1/52 ,  C02F1/66 ,  C02F101/14 ,  C02F101/10

Abstract: A method for treating water to remove a target analyte that includes adding to the water a rare earth metal salt and a coagulant, and then removing the target analyte from the water. The treatment composition can be added as a blend that includes die coagulant and the rare earth metal salt.

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：US11066313B1

公开(公告)日：2021-07-20

申请号：US16961829

申请日：2020-02-03

Applicant: CHEMTREAT, INC.

Inventor： Vladimir Djukanovic ,  Nicholas Seymour ,  William Henderson ,  Oleh Weres

IPC: C02F1/52 ,  C02F1/28 ,  B01J20/02 ,  C02F1/62 ,  C02F1/66 ,  C02F1/68 ,  B01J8/00 ,  B01D15/00 ,  C01G3/00 ,  C01G9/00 ,  C01G13/00 ,  C01G19/00 ,  C01G49/00 ,  C02F101/10 ,  C02F103/10 ,  C02F103/36

Abstract: Methods are disclosed for treating water containing a target anion to remove the target anion. The methods can include preparing a treatment composition solution that contains a metal treatment agent, adjusting the treatment composition solution to a first pH that is alkaline and then to a second pH that is acidic, and contacting the treatment composition solution with the water that contains the target anion.

公开(公告)号：US20250109051A1

公开(公告)日：2025-04-03

申请号：US18903343

申请日：2024-10-01

Applicant: CHEMTREAT, INC.

Inventor： Tom GURLEY, III ,  Jay Copeland ,  Vladimir Djukanovic

IPC: C02F5/14 ,  C02F101/36

Abstract: Methods for treating a water system to prevent scaling. The water system includes water that is prone to scaling and that is processed to remove an organic contaminant with a GAC system and/or an IX system. Antiscalant compositions can be selected to reduce the amount of antiscalant that is adsorbed or otherwise removed in the contaminant removal system so that a sufficient amount of antiscalant composition remains in the water stream.

公开(公告)号：US12103871B2

公开(公告)日：2024-10-01

申请号：US16628623

申请日：2018-07-03

Applicant: CHEMTREAT, INC

Inventor： William Henderson ,  Vladimir Djukanovic ,  Nicholas Seymour

IPC: C02F1/52 ,  C02F1/66 ,  C02F101/10 ,  C02F101/14

CPC classification number: C02F1/5209 ,  C02F1/5245 ,  C02F1/66 ,  C02F2101/103 ,  C02F2101/105 ,  C02F2101/106 ,  C02F2101/14 ,  C02F2209/06 ,  C02F2209/07

Abstract: A method for treating water to remove a target analyte that includes adding to the water a rare earth metal salt and a coagulant, and then removing the target analyte from the water. The treatment composition can be added as a blend that includes die coagulant and the rare earth metal salt.

公开(公告)号：US09890061B2

公开(公告)日：2018-02-13

申请号：US14874944

申请日：2015-10-05

Applicant: CHEMTREAT, INC.

Inventor： John Richardson ,  Vladimir Djukanovic ,  William Henderson

IPC: C02F1/28 ,  B01J20/02 ,  B01J20/30 ,  B01J20/12 ,  C02F101/10 ,  C02F1/00 ,  C02F1/24 ,  C02F1/38 ,  C02F1/42 ,  C02F1/44 ,  C02F1/52 ,  C02F1/66 ,  C02F1/68 ,  C02F1/72 ,  C02F101/14 ,  C02F101/22 ,  C02F101/36

CPC classification number: C02F1/288 ,  B01J20/0207 ,  B01J20/12 ,  B01J20/30 ,  B01J20/3204 ,  B01J20/3236 ,  B01J20/3242 ,  B01J20/3433 ,  B01J20/3475 ,  C02F1/004 ,  C02F1/24 ,  C02F1/281 ,  C02F1/38 ,  C02F1/42 ,  C02F1/44 ,  C02F1/52 ,  C02F1/66 ,  C02F1/683 ,  C02F1/72 ,  C02F2001/425 ,  C02F2101/103 ,  C02F2101/105 ,  C02F2101/14 ,  C02F2101/22 ,  C02F2101/36 ,  C02F2209/18 ,  C02F2303/16

Abstract: Methods for removing a target anion entity, such as a phosphate ion, from fluids by treating the fluid with a substrate containing an immobilized rare earth, the substrate being either a first loaded substrate including a first immobilized cationic rare earth, the first loaded substrate being formed by precipitating a rare earth in a clay such that the rare earth is fixed inside a porous structure of the clay and/or fixed on the surface of the clay; or a second loaded substrate comprising a second immobilized cationic rare earth that is bonded to the second loaded substrate via a chelating ligand.