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:
Apr. 05, 1988
Filed:
Apr. 03, 1987
Applicant:
Inventor:
Arnold Mulder, Kluutring, NL;
Assignee:
Gist Brocades N. V., , NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210603 ; 210617 ;
Abstract
Waste water containing sulfate and organic material is purified by anaerobic biological waste water treatment where at least 80% of the sulfate is converted into hydrogen sulfide in an acidification process and at least 70% of the resulting hydrogen sulfide is removed from the waste water.