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:
Jul. 12, 1988
Filed:
May. 30, 1986
Applicant:
Inventors:
Assignee:
Noell GmbH, , US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ; C02F / ;
U.S. Cl.
CPC ...
210617 ; 210605 ; 210611 ; 210 93 ; 210150 ; 210202 ; 210247 ; 2102571 ; 210261 ; 210903 ; 435182 ;
Abstract
Process for recovering nitrate from surface and ground water, in particular drinking water, by means of biological denitrification, in which the nitrates contained in the water are reduced to gaseous nitrogen in a reactor by means of a biocatalyst having immobilized cells trapped in a gel or polymer. The 'micrococcus denitrificans' that is preferably used requires for its metabolism added hydrogen and carbon that is present in the water in the form of dissolved carbon dioxide. Using a biocatalyst of immobilized cells and of the bacterial strain used, expensive after-purification is unnecessary because of increased bacterial count in the pure water outlet, and no undesirable by-products are formed.