Title:
BODおよび浮遊固形物を除去するための安定化凝集プロセスに活性汚泥を使用する方法およびそのシステム
Document Type and Number:
Japanese Patent JP2008534258
Kind Code:
A
Abstract:
A method and system for treating water or wastewater to remove both soluble BOD and suspended solids. The method entails a ballasted flocculation process where a flocculant and insoluble granular material is added to the water or wastewater to be treated causing solids in the water or wastewater to aggregate around the granular material to form ballasted floc particles. In a settling zone, ballasted floc particles form settled sludge and the settled sludge is separated from clarified effluent. At some point in the process, activated sludge, in the form of return activated sludge or mixed liquor, is mixed with the water or wastewater being subjected to the ballasted flocculation process. The addition of activated sludge enables the process to remove soluble BOD.
Inventors:
Dorati, James, Scott
Application Number:
JP2008503104A
Publication Date:
August 28, 2008
Filing Date:
March 22, 2006
Export Citation:
Assignee:
I. Kruger Incorporated
International Classes:
C02F3/12; C02F3/30
Domestic Patent References:
| JPS58214395A | 1983-12-13 |
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Katsunori Ando
Yukihiro Ikeda
Hajime Asamura
Katsunori Ando
Yukihiro Ikeda