Title:
METHOD AND APPARATUS FOR REDUCING VOLUME OF ORGANIC SLUDGE
Document Type and Number:
Japanese Patent JP3698419
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a new technique for reducing the volume of organic sludge such as waste sludge produced in an organic sewage biologically treating step at high speed in high efficiency with saved energy.
SOLUTION: The method for reducing the volume of organic sludge comprises a step to acid-ferment the organic sludge, a step to subject the acid-fermented organic sludge to solid-liquid separation, a step to solubilize the sludge separated by the solid-liquid separation and a step to digest the solubilized sludge anaerobically. The liquid separated by the solid-liquid separation can bye methane-fermented by immobilized methane bacteria or supplied to an anaerobic part or an oxygenless part of the step to treat organic sewage biologically or to a tank where the solubilized sludge is digested anaerobically.
More Like This:
| JPS5992098 | DISPOSAL OF WASTE LIQUOR CONTAINING ORGANIC SUBSTANCE |
| WO/1987/002349 | HEATER FOR INPUT SLUDGE TO A BIOGAS REACTOR |
Inventors:
Toshihiro Tanaka
Katsuyuki Kataoka
Akira Watanabe
Katsuyuki Kataoka
Akira Watanabe
Application Number:
JP2001174213A
Publication Date:
September 21, 2005
Filing Date:
June 08, 2001
Export Citation:
Assignee:
Ebara Corporation
International Classes:
C02F3/28; C02F11/00; C02F11/04; (IPC1-7): C02F11/04; C02F3/28; C02F11/00
Domestic Patent References:
| JP1224100A | ||||
| JP58143894A | ||||
| JP63077600A |
Attorney, Agent or Firm:
Shohei Oguri
Hironori Honda
Toshimitsu Ichikawa
Takeshi Takamatsu
Yuriko Hamada
Zenichi Soeda
Hironori Honda
Toshimitsu Ichikawa
Takeshi Takamatsu
Yuriko Hamada
Zenichi Soeda
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