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. 07, 2002
Filed:
Nov. 29, 2000
Susumu Hasegawa, Kobe, JP;
Akira Akashi, Kobe, JP;
Kenji Katsura, Kobe, JP;
Masahiko Miura, Kobe, JP;
Takahiro Fukui, Kawanishi, JP;
Shinko Pantec Co., Ltd., Kobe, JP;
Abstract
A method and apparatus are disclosed for treating an organic waste water which are capable of utilizing compact equipment by reducing the quantity of a sludge to be treated. Organic waste water (A) is subjected to an aerobic biological treatment in a biological treatment tank ( ). Then, solution (B) obtained by the treatment in the biological treatment tank ( ) is solid-liquid separated into treated water (C) and sludge (D) in precipitation tank ( ). A portion of the sludge (D) separated in the precipitation tank ( ) is returned to the biological treatment tank ( ) through a route ( ). A portion (E) of the sludge separated in the precipitation tank ( ) is concentrated by a concentration device ( ). Thereafter, the concentrated sludge (E) is solubilized by thermophilic bacteria in a solubilizing tank ( ).