公开(公告)号：US10676376B2

公开(公告)日：2020-06-09

申请号：US15703028

申请日：2017-09-13

Applicant: ECOLAB USA INC.

Inventor： Nicholas S. Ergang ,  Daniel E. Schwarz ,  Darlington Mlambo ,  Bruce A. Keiser ,  Hung Ting Chen

IPC: C02F1/42 ,  B01J20/02 ,  C02F1/28 ,  C02F1/70 ,  C02F101/10 ,  C02F101/16 ,  C02F101/20

Abstract: Methods of modification of zero-valent iron (ZVI) to improve its performance in removing contaminants from a discharge stream. In some aspects, the methods include contacting ZVI-impregnated disks with solutions containing metal cations such as Ni2+, Cu2+, Fe2+, or Pd2+. In some aspects, a wastewater stream is treated with a metal cation solution, then passed over ZVI. Compositions for treating wastewater include ZVI that is modified with a metal cation solution.

公开(公告)号：US20180086650A1

公开(公告)日：2018-03-29

申请号：US15703028

申请日：2017-09-13

Applicant: ECOLAB USA INC.

Inventor： Nicholas S. Ergang ,  Daniel E. Schwarz ,  Darlington Mlambo ,  Bruce A. Keiser ,  Hung Ting Chen

IPC: C02F1/42 ,  B01J20/02

CPC classification number: C02F1/42 ,  B01J20/0229 ,  B01J20/0237 ,  C02F1/281 ,  C02F1/705 ,  C02F2001/425 ,  C02F2101/103 ,  C02F2101/106 ,  C02F2101/163 ,  C02F2101/20

Abstract: Methods of modification of zero-valent iron (ZVI) to improve its performance in removing contaminants from a discharge stream. In some aspects, the methods include contacting ZVI-impregnated disks with solutions containing metal cations such as Ni2+, Cu2+, Fe2+, or Pd2+. In some aspects, a wastewater stream is treated with a metal cation solution, then passed over ZVI. Compositions for treating wastewater include ZVI that is modified with a metal cation solution.