Title:
METHOD AND APPARATUS FOR TREATING ORGANIC WASTE WATER
Document Type and Number:
Japanese Patent JP3672175
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To treat organic waste water containing organic matter, nitrogen and phosphorus in consideration of energy saving, the recovery of a useful substance and the utilization of the useful substance as resources.
SOLUTION: Initial sedimented sludge separated in a first solid-liquid separation tank 1 or conc. sludge 11 thereof is dehydrated by a dehydrator 4 and the obtained dehydrated cake is burnt in a cake combustion process 7 and excessive sludge separated in a final solid-liquid separation tank 3 or concentrated sludge 31 thereof is digested in an anaerobic fermentation process 5 and phosphorus and nitrogen are recovered from the digested sludge formed in the anaerobic fermentation process 5 in a form of magnesium ammonium phosphate.
Inventors:
Takao Hagino
Akira Watanabe
Akira Watanabe
Application Number:
JP29390799A
Publication Date:
July 13, 2005
Filing Date:
October 15, 1999
Export Citation:
Assignee:
Ebara Corporation
International Classes:
C02F3/12; C02F11/04; C02F11/06; C02F11/12; (IPC1-7): C02F11/04; C02F3/12; C02F11/06; C02F11/12
Domestic Patent References:
| JP6071297A | ||||
| JP10314757A | ||||
| JP56121691A | ||||
| JP56150494A | ||||
| JP59092092A | ||||
| JP60227897A | ||||
| JP61271097A | ||||
| JP63084696A |
Attorney, Agent or Firm:
Shohei Oguri
Hironori Honda
Toshimitsu Ichikawa
Takeshi Takamatsu
Yuriko Hamada
Hagino Taira
Kiyotaka Sasaki
Toshio Fukasawa
Zenichi Soeda
Hironori Honda
Toshimitsu Ichikawa
Takeshi Takamatsu
Yuriko Hamada
Hagino Taira
Kiyotaka Sasaki
Toshio Fukasawa
Zenichi Soeda