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. 22, 1980
Filed:
Sep. 14, 1978
Applicant:
Inventors:
Assignee:
The Agency of Industrial Science and Technology, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02C / ;
U.S. Cl.
CPC ...
210-6 ; 210-8 ; 210 12 ; 210 16 ;
Abstract
The present invention relates to a process for digestion treatment of organic wastes that are difficult to digest, with a high efficiency and an improved recovery rate of methane. The wastes, before subjected to anaerobic treatment, are heated at 55.degree.-75.degree. C. within an acid or alkaline solution for dissolving digestible ingredients and the insoluble ingredients are eliminated before being transferred to an anaerobic digestion step. By exercising a pre-treatment for dissolving and separating digestible ingredients, the size of the container will be minimized as a result of the shortened time required for digestion and the recovery rate of methane will be improved.