The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 2020
Filed:
Sep. 13, 2017
Applicant:
Ecolab Usa Inc., St. Paul, MN (US);
Inventors:
Nicholas S. Ergang, Glen Ellyn, IL (US);
Daniel E. Schwarz, Naperville, IL (US);
Darlington Mlambo, Oswego, IL (US);
Bruce A. Keiser, Plainfield, IL (US);
Hung Ting Chen, Aurora, IL (US);
Assignee:
ECOLAB USA INC., St. Paul, MN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C02F 1/42 (2006.01); B01J 20/02 (2006.01); C02F 1/28 (2006.01); C02F 1/70 (2006.01); C02F 101/10 (2006.01); C02F 101/16 (2006.01); C02F 101/20 (2006.01);
U.S. Cl.
CPC ...
C02F 1/42 (2013.01); B01J 20/0229 (2013.01); B01J 20/0237 (2013.01); C02F 1/281 (2013.01); C02F 1/705 (2013.01); C02F 2001/425 (2013.01); C02F 2101/103 (2013.01); C02F 2101/106 (2013.01); C02F 2101/163 (2013.01); C02F 2101/20 (2013.01);
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 Ni, Cu, Fe, or Pd. 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.