Title:
DEVICE FOR SYNCHRONOUSLY REMOVING NITROGEN AND PHOSPHORUS IN MIXED MUNICIPAL SEWAGE AND FECAL SEWAGE BY USING A2/O-BIOMEMBRANE AND METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2012/010096
Kind Code:
A1
Abstract:
A device for synchronously removing nitrogen and phosphorus in mixed municipal sewage and fecal sewage by using A2/O-biomembrane is provided, which comprises an anaerobic tank (1), an anoxic tank (2), a first aerobic tank (3), a second aerobic tank (15) and a sedimentation tank (4) connected in turn. The second aerobic tank (15) is connected with the anoxic tank (2) through a pipeline (8) and a mixed-liquid reflux pump (9), and the sedimentation tank (4) is connected with the anaerobic tank (1) through a pipeline (7) and a sludge reflux pump (14). Suspended filling materials (11) are dispensed into the first aerobic tank (3) and the second aerobic tank (15) and the suspended filling materials are three-dimensional hollow light porous ceramisite. At the same time, a method for synchronously removing nitrogen and phosphorus in mixed municipal sewage and fecal sewage by using A2/O-biomembrane is also provided. In the method, by feeding the suspended filling materials into an aeration tank in the traditional A2O technology, carriers with the surface for attachment and growth of microorganism are provided, biomass in the aeration tank is increased, treating ability for waste water is improved and sewage bulking is overcome, and simultaneous existence attached phases and suspended phases in the aeration tank sufficiently exerts their superiority. On the premise that the volume of a reactor is not increased, the method intensifies a nitration reaction condition, improves the function of removing nitrogen and phosphorus in the traditional active sludge method technology, solves the contradiction of sludge age which exists in the nitrogen and phosphorus removing process of the traditional A2/O technology and has good water processing effect.
Inventors:
ZHOU SHAOQI (CN)
ZHOU XIAO (CN)
ZENG WU (CN)
ZHOU XIAO (CN)
ZENG WU (CN)
Application Number:
PCT/CN2011/077400
Publication Date:
January 26, 2012
Filing Date:
July 20, 2011
Export Citation:
Assignee:
UNIV SOUTH CHINA TECH (CN)
ZHOU SHAOQI (CN)
ZHOU XIAO (CN)
ZENG WU (CN)
ZHOU SHAOQI (CN)
ZHOU XIAO (CN)
ZENG WU (CN)
International Classes:
C02F9/14; C02F3/30
Foreign References:
| CN101935132A | 2011-01-05 | |||
| CN201753301U | 2011-03-02 | |||
| CN2576709Y | 2003-10-01 | |||
| KR100850488B1 | 2008-08-08 |
Other References:
ZENG WU ET AL.: "NITROGEN REMOVAL EFFECT OF MIXED WASTEWATER BY A2/O PROCESS PILOT PLANT", WATER TREATMENT TECHNOLOGY, vol. 34, no. 10, 31 October 2008 (2008-10-31), pages 53
LI YINBO ET AL.: "PILOT SCALE STUDY OF LOW CONCENTRATION MUNICIPAL WASTEWATER TREATMENT WITH A2/O", WATER TREATMENT TECHNOLOGY, vol. 35, no. 4, 30 April 2009 (2009-04-30), pages 74
LI YINBO ET AL.: "PILOT SCALE STUDY OF LOW CONCENTRATION MUNICIPAL WASTEWATER TREATMENT WITH A2/O", WATER TREATMENT TECHNOLOGY, vol. 35, no. 4, 30 April 2009 (2009-04-30), pages 74
Attorney, Agent or Firm:
YOGO PATENT & TRADEMARK AGENCY LIMITED COMPANY (CN)
广州粤高专利商标代理有限公司 (CN)
广州粤高专利商标代理有限公司 (CN)
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Claims: