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:
Nov. 26, 1991
Filed:
Mar. 30, 1990
Applicant:
Inventors:
Alan Y Li, Burr Ridge, IL (US);
James F Grutsch, Hammond, IN (US);
Kevin P O'Leary, Orland Hills, IL (US);
Assignee:
Chemical Waste Management, Inc., Oak Brook, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C02F / ; C02F / ;
U.S. Cl.
CPC ...
210606 ; 210607 ; 210616 ; 210625 ; 210764 ;
Abstract
An improved powdered adsorbent enhanced sludge process for the treatment of wastewater is disclosed that allows for in situ recovery of unregenerated powdered adsorbent. In situ recovery is performed by contacting a mixture of activated sludge and spent powdered adsorbent at disassociation conditions whereby cell lysis occurs. The cell lysis allows for physical separation of the spent powdered adsorbent from the activated sludge, thus allowing for recycle of adsorbent without the need for a regeneration process.