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. 13, 1984
Filed:
Sep. 22, 1983
Applicant:
Inventors:
Assignee:
Degremont, Hauts de Seine, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ; C12M / ;
U.S. Cl.
CPC ...
210603 ; 210617 ; 210150 ; 48111 ; 4819 / ; 435167 ; 435314 ;
Abstract
Waste water to be treated is introduced into a filter including granular material for supporting the biomass resulting from an anaerobic treatment operation. During such treatment operation biogas is formed, and the waste water being treated and the granular material supporting the biomass are continuously circulated by injecting a portion of the biogas into a tube extending vertically upwardly through the filter.