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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.:

US 10773973 B1

PDFFull Text
Date of Patent:
Sep. 15, 2020

Filed:

Mar. 08, 2013

Enhanced foam removal of total suspended solids and multiply charged cations from aqueous or aqueous/oil mixed phase via increased viscoelasticity

Applicant:

Ecolab Usa Inc., Saint Paul, MN (US);

Inventors:

Victor Fuk-Pong Man, St. Paul, MN (US);

Michael Charles Denoma, Vadnais Heights, MN (US);

Assignee:

Ecolab USA Inc., Saint Paul, MN (US);

Attorney:

McKee, Voorhees & Sease, PLC

Primary Examiner:

Michael A Salvitti

Int. Cl.
CPC ...
C02F 1/68 (2006.01); C02F 1/24 (2006.01); B03D 1/008 (2006.01); B03D 1/004 (2006.01); B03D 1/24 (2006.01); C02F 1/66 (2006.01); C02F 1/52 (2006.01); C02F 1/50 (2006.01); C02F 101/32 (2006.01); C02F 1/72 (2006.01); C02F 1/56 (2006.01); C02F 1/54 (2006.01); B03D 1/01 (2006.01); B03D 1/012 (2006.01); B03D 1/014 (2006.01);
U.S. Cl.
CPC ...
C02F 1/24 (2013.01); B03D 1/008 (2013.01); B03D 1/0043 (2013.01); B03D 1/24 (2013.01); C02F 1/68 (2013.01); B03D 1/01 (2013.01); B03D 1/011 (2013.01); B03D 1/012 (2013.01); B03D 1/014 (2013.01); B03D 2201/04 (2013.01); B03D 2203/006 (2013.01); C02F 1/50 (2013.01); C02F 1/5263 (2013.01); C02F 1/547 (2013.01); C02F 1/56 (2013.01); C02F 1/66 (2013.01); C02F 1/683 (2013.01); C02F 1/72 (2013.01); C02F 2101/325 (2013.01); C02F 2305/04 (2013.01);
Abstract

The present invention provides improved methods for purifying and/or removing multiply charged cations and suspended solids from water. In particular the process relates to an additive composition that has the appropriate surfactant characteristics for effectively removing multiply charged cations and suspended solids from an aqueous or oil/aqueous mixed phase via foam fractionation. According to the invention, a hydrophobically modified polymer that acts as an associative thickener is used in the presence of a source of alkalinity or anionic reactant as well as surfactant in appropriate ratios to facilitate multiply charged cation and suspended solids removal for water purification in any of a number of commercial, environmental and industrial applications.

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