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:
Mar. 10, 1981
Filed:
May. 30, 1979
Applicant:
Inventors:
Assignee:
O T V (Omnium de Traitements et de Valorisation), Courbevoie, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210614 ; 210617 ; 210760 ;
Abstract
In a biological water purification process polluted water, including surface water to be made potable, sewage water or industrial water, is percolated through a submerged fixed bed of granular material such as activated carbon, chamottes, raw clays, etc., with an oxygenated gas being upwardly injected at an intermediate level of the bed. The water and gas delivery rates are controlled to satisfy the following relations: ##EQU1## wherein Q.sub.1 is the delivery of oxygenated gas in m.sup.3 /hr,
Moreaud, Henri. (1981). Water purification process (U.S. Patent No. 4255266). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4255266
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile