Title:
SLUDGE TREATMENT SYSTEM, WASTEWATER TREATMENT SYSTEM, SLUDGE TREATMENT METHOD AND WASTEWATER TREATMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2012/117595
Kind Code:
A1
Abstract:
Provided are: a sludge treatment system which is capable of reducing sludge without using a chemical agent such as an aqueous hypochlorous acid solution; a wastewater treatment system using the sludge treatment system; a sludge treatment method; and a wastewater treatment method. The sludge treatment system is provided with: an aeration tank (2) which serves as a biological treatment tank wherein wastewater such as sewage water or industrial wastewater that contains organic matter is subjected to organic matter decomposition by means of microorganisms; a sedimentation tank (3) for separating the mixture of water and sludge, said mixture being treated in the aeration tank (2), into sludge and treated water; and a sludge return path (4) which serves as a returning means for returning the sludge separated by the sedimentation tank (3) to the aeration tank (2), while applying a water hammer pressure to the sludge by a water hammer device (8) so as to destroy cell membranes of microorganisms in the sludge.
Inventors:
FUJITA EIJI (JP)
Application Number:
PCT/JP2011/070725
Publication Date:
September 07, 2012
Filing Date:
September 12, 2011
Export Citation:
Assignee:
FUJITA EIJI (JP)
International Classes:
C02F3/12; C02F11/00; C02F11/12
Foreign References:
| JP2004066057A | 2004-03-04 | |||
| JP2004313899A | 2004-11-11 | |||
| JPS63283799A | 1988-11-21 |
Attorney, Agent or Firm:
KATO, Hisashi et al. (JP)
Hisashi Kato (JP)
Hisashi Kato (JP)
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Claims:
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