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. 03, 1998
Filed:
Oct. 15, 1996
Applicant:
Inventors:
Leonardus Hendrikus Vredenbregt, Arnhem, NL;
Andrea Agatha Potma, Arnhem, NL;
Gerrit Derk Enoch, Borne, NL;
Assignee:
N.V. Kema, Arnhem, NL;
Primary Examiner:
Int. Cl.
CPC ...
C02F / ; C02F / ;
U.S. Cl.
CPC ...
210611 ; 210612 ; 210631 ; 210903 ;
Abstract
The invention relates to a process for cleaning a waste water stream or the like, comprising: a desulphurization step, in the form of addition of a desulphurizing agent, and addition of a buffer; followed by a biodenitrification step carried out by micro-organisms which feed on the buffer remaining in the waste-water stream of the desulphurization step; wherein sulphur contamination and the like is removed in the desulphurization step and wherein nitrate contamination and the like as well an the buffer, are removed in the bio-denitrification step.