Title:
METHANE FERMENTATION METHOD AND METHANE FERMENTATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/071013
Kind Code:
A1
Abstract:
Disclosed is a methane fermentation method and a methane fermentation device which can maintain a high decomposition rate in a short time without having a complex device configuration. Methane fermentation is performed using a methane fermentation device having: a first sludge concentration measurement means (10) which measures the sludge concentration of a fermented liquid in a methane fermentation tank (2); a second sludge concentration measurement means (20) which measures the sludge concentration of a prescribed portion of a sludge sediment liquid formed by a gravity sedimentation means (3); and a control device (100) which compares the sludge concentration measured by the first sludge concentration measurement means (10) and the sludge concentration measured by the second sludge concentration measurement means (20), and controls the amounts of liquid such that the sludge concentration of the liquid returned to the methane fermentation tank (2) via a return line (L2) is higher than the sludge concentration of the fermented liquid in the methane fermentation tank (2), and such that the sludge concentration of the liquid discharged via a discharge line (L6) is lower than the sludge concentration of the fermented liquid in the methane fermentation tank (2).
Inventors:
TOMIUCHI Yoshimasa (3-1, Toranomon 4-chome, Minato-k, Tokyo 29, 〒1056029, JP)
Application Number:
JP2010/071820
Publication Date:
June 16, 2011
Filing Date:
December 06, 2010
Export Citation:
Assignee:
METAWATER Co., Ltd. (3-1 Toranomon 4-chome, Minato-ku Tokyo, 29, 〒1056029, JP)
メタウォーター株式会社 (〒29 東京都港区虎ノ門四丁目３番１号 Tokyo, 〒1056029, JP)
University of Sumatera Utara (JI. Universitas No.46 Komplek USU Medan, ID)
メタウォーター株式会社 (〒29 東京都港区虎ノ門四丁目３番１号 Tokyo, 〒1056029, JP)
University of Sumatera Utara (JI. Universitas No.46 Komplek USU Medan, ID)
International Classes:
B09B3/00; C02F11/04
Attorney, Agent or Firm:
MATSUI Shigeru (2nd Floor, Ginza Chuo Bldg.,16-5, Ginza 8-chome, Chuo-k, Tokyo 61, 〒1040061, JP)