公开(公告)号：US11242271B2

公开(公告)日：2022-02-08

申请号：US16307551

申请日：2017-06-05

Applicant: Evoqua Water Technologies, LLC

Inventor： Rohan Wikramanayake ,  Raymond G. Pepin ,  Thomas Miles

IPC: C02F1/52 ,  C02F3/12 ,  C02F1/56 ,  C02F1/66 ,  C02F3/00 ,  C02F101/20

Abstract: A system for treating metal-contaminated wastewater includes a primary treatment sub-system, a secondary treatment sub-system, and a tertiary treatment sub-system. The tertiary treatment sub-system includes a reactor tank, a source of ballast material, a source of coagulant, a solids-liquid separator, and a controller configured to recycle ballasted solids from the solids-liquid separator to the reactor tank an amount sufficient to generate metal hydroxide floc in the reactor tank to reduce a concentration of dissolved metal in the reactor tank.

公开(公告)号：US11772993B2

公开(公告)日：2023-10-03

申请号：US17575057

申请日：2022-01-13

Applicant: Evoqua Water Technologies LLC

Inventor： Rohan Wikramanayake ,  Raymond G. Pepin ,  Thomas Miles

IPC: C02F3/12 ,  C02F1/52 ,  C02F1/56 ,  C02F1/66 ,  C02F3/00 ,  C02F101/20

CPC classification number: C02F3/1226 ,  C02F1/5209 ,  C02F1/5236 ,  C02F1/56 ,  C02F1/66 ,  C02F2003/003 ,  C02F2101/20 ,  C02F2209/06 ,  C02F2305/12 ,  Y02W10/10

Abstract: A system for treating metal-contaminated wastewater includes a primary treatment sub-system, a secondary treatment sub-system, and a tertiary treatment sub-system. The tertiary treatment sub-system includes a reactor tank, a source of ballast material, a source of coagulant, a solids-liquid separator, and a controller configured to recycle ballasted solids from the solids-liquid separator to the reactor tank an amount sufficient to generate metal hydroxide floc in the reactor tank to reduce a concentration of dissolved metal in the reactor tank.

公开(公告)号：US20220135455A1

公开(公告)日：2022-05-05

申请号：US17575057

申请日：2022-01-13

Applicant: Evoqua Water Technologies LLC

Inventor： Rohan Wikramanayake ,  Raymond G. Pepin ,  Thomas Miles

IPC: C02F3/12

Abstract: A system for treating metal-contaminated wastewater includes a primary treatment sub-system, a secondary treatment sub-system, and a tertiary treatment sub-system. The tertiary treatment sub-system includes a reactor tank, a source of ballast material, a source of coagulant, a solids-liquid separator, and a controller configured to recycle ballasted solids from the solids-liquid separator to the reactor tank an amount sufficient to generate metal hydroxide floc in the reactor tank to reduce a concentration of dissolved metal in the reactor tank.

公开(公告)号：US20190194048A1

公开(公告)日：2019-06-27

申请号：US16307551

申请日：2017-06-05

Applicant: EVOQUA WATER TECHNOLOGIES LLC

Inventor： Rohan Wikramanayake ,  Raymond G. Pepln ,  Thomas Miles

IPC: C02F3/12

CPC classification number: C02F3/1226 ,  C02F1/5209 ,  C02F1/5236 ,  C02F1/56 ,  C02F1/66 ,  C02F2003/003 ,  C02F2101/20 ,  C02F2209/06 ,  C02F2305/12 ,  Y02W10/15

Abstract: A system for treating metal-contaminated wastewater includes a primary treatment sub-system, a secondary treatment sub-system, and a tertiary treatment sub-system. The tertiary treatment sub-system includes a reactor tank, a source of ballast material, a source of coagulant, a solids-liquid separator, and a controller configured to recycle ballasted solids from the solids-liquid separator to the reactor tank an amount sufficient to generate metal hydroxide floc in the reactor tank to reduce a concentration of dissolved metal in the reactor tank.