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:
May. 19, 1987
Filed:
Oct. 17, 1985
Applicant:
Inventors:
Kiyoshi Minami, Tokyo, JP;
Tsuyoshi Horiyama, Tokyo, JP;
Assignee:
Shimizu Construction Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ; C12P / ;
U.S. Cl.
CPC ...
210603 ; 210617 ; 210928 ; 435167 ; 4819 / ;
Abstract
A methane fermentation process for processing an evaporator condensate of a waste fluid from a pulp production system is disclosed. The process comprises the pre-treatment step of adding an acid into the evaporator condensate to settle and coagulate inhibitors for methane fermentation, removing the inhibitors, and thereafter neutralizing the waste fluid deprived of the inhibitors; and the fermentation step of allowing the effluent from the pre-treatment step to flow through a methane fermentation bio-reactor where the effluent undergoes fermentation to generate methane.