Title:
WASTEWATER TREATMENT METHOD AND WASTEWATER TREATMENT SYSTEM
Document Type and Number:
WIPO Patent Application WO/2014/200056
Kind Code:
A1
Abstract:
This wastewater treatment method involves adding nitrates and an alkali to wastewater and aerating the wastewater such that the oxidation-reduction potential in the biological treatment tank for biologically treating the wastewater is ±0mV or greater and the dissolved oxygen concentration is 1mg/L or less. Further, this wastewater treatment system for treating wastewater is provided with a biological treatment tank for biologically treating wastewater, a nitrate adding means for adding nitrates to the wastewater, and an alkali adding means for adding an alkali to the wastewater.
Inventors:
AKUTSU TAKEO (JP)
Application Number:
PCT/JP2014/065579
Publication Date:
December 18, 2014
Filing Date:
June 12, 2014
Export Citation:
Assignee:
MITSUBISHI HEAVY IND MECHATRONICS SYSTEMS LTD (JP)
International Classes:
C02F3/12; C02F3/34
Foreign References:
| JP2007117790A | 2007-05-17 | |||
| JP2000061488A | 2000-02-29 | |||
| JPS5211645A | 1977-01-28 | |||
| JPH09164399A | 1997-06-24 | |||
| JP2013034993A | 2013-02-21 | |||
| JP2000061497A | 2000-02-29 |
Attorney, Agent or Firm:
MORI Ryuichirou et al. (JP)
Woods Ryuichiro (JP)
Woods Ryuichiro (JP)
Download PDF:
Previous Patent: LEAF SPRING FRAME MEMBER
Next Patent: BONDED OPTICAL MEMBER, AND METHOD FOR PRODUCING SAME
Next Patent: BONDED OPTICAL MEMBER, AND METHOD FOR PRODUCING SAME