Title:
散水濾床中で同時硝化・脱窒を用いる排水処理方法
Document Type and Number:
Japanese Patent JP4474500
Kind Code:
B2
Abstract:
The invention concerns a method and installation for the treatment of excess sludge derived from biological wastewater treatment plants. The method is characterized in that it consists of associating at least one digestion step (4) and at least one wet oxidation step (2) of said sludge, said wet oxidation step being conducted at a temperature of between 50° C. and 180° C. and at a pressure of between 2 and 40 bar.
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Inventors:
Michele Payrodeau
Le Tarek, Xavier
Le Tarek, Xavier
Application Number:
JP2000590953A
Publication Date:
June 02, 2010
Filing Date:
December 23, 1999
Export Citation:
Assignee:
Oteve Societe Anonym
International Classes:
C02F3/34; C12M1/00; C02F3/00; C02F3/06; C02F3/08; C02F3/30; C12M1/36; C12M1/40; C12N1/00; C12N11/08
Domestic Patent References:
| JP3024280B2 | ||||
| JP10151475A | ||||
| JP1022039B2 |
Attorney, Agent or Firm:
Shoichi Okuyama
Arihara Koichi
Matsushima Tetsuo
Hidefumi Kawamura
Naomi Yoshida
Ayako Nakamura
Fukagawa Eri
Satoshi Morimoto
Arihara Koichi
Matsushima Tetsuo
Hidefumi Kawamura
Naomi Yoshida
Ayako Nakamura
Fukagawa Eri
Satoshi Morimoto