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Title:
有機性廃液の処理方法および処理装置
Document Type and Number:
Japanese Patent JP4266329
Kind Code:
B2
Abstract:

To provide a treatment method and a treatment device for an organic waste liquid, by which the dissolvability of sludge is efficiently improved, simultaneously, phosphorous present in the sludge is eluted, the generation of digestion gas is promoted, the amount of the sludge to be treated is reduced, and further, phosphorous is recovered.

The organic waste liquid to be caused to flow-in is subjected to ozone treatment and is next subjected to alkali treatment, and thereafter, an organic waste liquid after modification is separated into a solid and a solution. The solid after the separation is introduced into an anaerobic digestor chamber and is subjected to anaerobic digestion, and further, phosphorous is recovered from the solution after the separation. The digested sludge in the anaerobic digestor chamber is discharged, and the discharged digested sludge may be subjected to the treatment of dispersion and modification. It is also possible that the discharged digested sludge is subjected to solid-liquid separation, and the obtained concentrated sludge is subjected to the treatment of dispersion and modification.

COPYRIGHT: (C)2005,JPO&NCIPI


Inventors:
Toshiyuki Kamiya
Junji Hirotsuji
Naoki Nakatsugawa
Nozomi Yasunaga
Application Number:
JP2003176102A
Publication Date:
May 20, 2009
Filing Date:
June 20, 2003
Export Citation:
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Assignee:
Mitsubishi Electric Corporation
International Classes:
C02F11/04; C02F11/00; C02F11/06; C02F11/14
Domestic Patent References:
JP2001179285A
JP8039096A
JP11028445A
JP2003071487A
JP2001025796A
JP2002336896A
JP2002159998A
JP2002186996A
JP58074191A
JP4326998A
JP9094596A
JP9099292A
JP56010400A
Attorney, Agent or Firm:
Sota Asahina
Kei Saki
Fumio Akiyama
Hiromu Tanaka



 
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