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:
Dec. 24, 1991
Filed:
May. 01, 1991
Applicant:
Inventor:
Robert J Kamke, Mount Holly, NJ (US);
Assignee:
Zimpro Passavant Environmental Systems, Inc., Rothschild, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210754 ; 210756 ; 210765 ; 210766 ; 210917 ;
Abstract
A process for removing color and oxidizable organic matter from thermally conditioned sludge liquor is disclosed. The process comprises treating the liquor with 250 to 430 mg/l chlorine which removes 20 to 70 percent of the color and produces a chlorine residual in the liquor. The chlorine-treated liquor is mixed with a small volume of untreated thermal conditioning liquor to remove the chlorine residual, and the dechlorinated mixture is returned to the treatment plant influent for additional treatment.