公开(公告)号：US20250051201A1

公开(公告)日：2025-02-13

申请号：US18710765

申请日：2022-11-17

Applicant: Dow Global Technologies LLC

Inventor： Wu Chen ,  Lin Zhao ,  Jen-Hsiang Kao ,  Michael E. Uhl

IPC: C02F1/72 ,  C02F103/34

Abstract: A system for the treatment of oxidizable contaminants in wastewater includes a contaminant treatment vessel and a hydrogen peroxide supply unit. The hydrogen peroxide supply unit includes a hydrogen peroxide transfer line in fluid communication with the contaminant treatment vessel with an air-gap. A wastewater feed stream may also be in fluid communication with the contaminant treatment vessel. A contaminant treatment vessel effluent stream may also be in fluid communication with the contaminant treatment vessel. A method for the treatment of oxidizable contaminants in wastewater includes supplying wastewater to a contaminant treatment vessel, supplying hydrogen peroxide to the contaminant treatment vessel so that the supply is above the maximum filling level of the vessel in an air-gap, and contacting wastewater in the contaminant treatment vessel with hydrogen peroxide. Contacting wastewater with hydrogen peroxide reduces the concentration of oxidizable contaminants based on the concentration of oxidizable contaminants in the wastewater feed stream.

公开(公告)号：US11878296B2

公开(公告)日：2024-01-23

申请号：US17781950

申请日：2021-01-25

Applicant: Dow Global Technologies LLC

Inventor： Mrunmayi Kumbhalkar ,  Wu Chen ,  Brian Murdoch ,  Haifeng Shi ,  Lin Zhao

IPC: B01J38/72 ,  B01J27/26 ,  B01J27/28

CPC classification number: B01J38/72 ,  B01J27/26 ,  B01J27/28

Abstract: A process for separating a catalyst component from a catalyst-containing slurry by centrifugation including separating the catalyst component from the mother liquor of the catalyst-containing slurry using a stacked disc centrifuge equipped with an auto-discharging functionality. The solids discharge from the stacked disc centrifuge is enhanced by adding a washing solution to the bowl and the solids discharge chute of the stacked disc centrifuge.

公开(公告)号：US20230019789A1

公开(公告)日：2023-01-19

申请号：US17781950

申请日：2021-01-25

Applicant: Dow Global Technologies LLC

Inventor： Mrunmayi Kumbhalkar ,  Wu Chen ,  Brian Murdoch ,  Haifeng Shi ,  Lin Zhao

IPC: B01J38/72 ,  B01J27/26 ,  B01J27/28

Abstract: A process for separating a catalyst component from a catalyst-containing slurry by centrifugation including separating the catalyst component from the mother liquor of the catalyst-containing slurry using a stacked disc centrifuge equipped with an auto-discharging functionality. The solids discharge from the stacked disc centrifuge is enhanced by adding a washing solution to the bowl and the solids discharge chute of the stacked disc centrifuge.