Title:
廃水処理システムとその処理方法
Document Type and Number:
Japanese Patent JP5189688
Kind Code:
B1
Abstract:
This wastewater treatment system comprises: an anaerobic region to which wastewater that has not passed through a sedimentation tank, i.e., wastewater in which solids having a small size and a low specific gravity are contained as such without being separated therefrom as raw sludge, is supplied first; and an oxygen-free region and an aerobic region which have been consecutively formed by causing the regions to communicate with each other through the openings of a partition as channels. In the system and method, the percentage of return sludge is kept at 30-60%, the concentration of active sludge (mixed liquor suspended solid (MLSS)) is kept at 2,600-5,000 mg/L, excluding 5,000 mg/L, and the concentration of bacteria belonging to the genus Bacillus is kept at 108-1010 cells/mL.
Inventors:
Makoto Kojima
Application Number:
JP2012105977A
Publication Date:
April 24, 2013
Filing Date:
May 07, 2012
Export Citation:
Assignee:
Makoto Kojima
International Classes:
C02F3/34; C12N1/20
Domestic Patent References:
| JP2007105631A | 2007-04-26 | |||
| JP2007105630A | 2007-04-26 | |||
| JP2011067730A | 2011-04-07 | |||
| JP2010155189A | 2010-07-15 | |||
| JP2009214037A | 2009-09-24 | |||
| JP2006212483A | 2006-08-17 | |||
| JP2005329301A | 2005-12-02 | |||
| JPH1133590A | 1999-02-09 | |||
| JP2009142786A | 2009-07-02 |
Attorney, Agent or Firm:
Nozomi Watanabe
Haruko Sanwa
Hideaki Ito
Haruko Sanwa
Hideaki Ito