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:
Mar. 19, 2002
Filed:
Apr. 18, 2000
Applicant:
Inventors:
John Van Newenhizen, Mundelein, IL (US);
Gene Verne Wayman, Fox River Grove, IL (US);
Assignee:
United States Filter Corporation, Palm Desert, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 4/900 ;
U.S. Cl.
CPC ...
B01J 4/900 ;
Abstract
An improved method for regenerating ion exchange resin in a treatment tank having a flow direction, which includes the steps of providing a supply of regenerant under pressure into the tank, and introducing the regenerant into the tank in an opposite flow direction to the treatment flow direction. In the preferred embodiment, the regenerant is a combination of CO which is mixed with water to form carbonic acid and citric acid. This mixture is then introduced into the treatment tank without storage.