Title:
MEMBRANE-SEPARATION ACTIVATED SLUDGE TREATMENT SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/051630
Kind Code:
A1
Abstract:
A membrane-separation activated sludge treatment system according to one embodiment of the present invention includes: a biological treatment tank that has an inlet and an outlet for organic matter-containing drainage and biologically treats the organic matter-containing drainage; a plurality of carriers provided to flow in the biological treatment tank and keep activated sludge sticking thereto; a first bubble supply mechanism disposed in the biological treatment tank to aerate the organic matter-containing drainage; a membrane separation mechanism disposed on the downstream side of the first bubble supply mechanism in the biological treatment tank; and a second bubble supply mechanism disposed below the membrane separation mechanism in the biological treatment tank to clean the membrane separation mechanism, and the average diameter of bubbles supplied by the second bubble supply mechanism is greater than the average diameter of bubbles supplied by the first bubble supply mechanism.
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Inventors:
SHINOZAKI TAKAFUMI (JP)
MORITA TORU (JP)
NISHIURA TAKAYUKI (JP)
MORITA TORU (JP)
NISHIURA TAKAYUKI (JP)
Application Number:
PCT/JP2017/026020
Publication Date:
March 22, 2018
Filing Date:
July 19, 2017
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
C02F3/12; B01D65/08; B01D71/36; C02F1/44; C02F3/08; C02F3/20
Domestic Patent References:
| WO2014192476A1 | 2014-12-04 |
Foreign References:
| JP2005087831A | 2005-04-07 | |||
| JP2007136389A | 2007-06-07 | |||
| JP2005193106A | 2005-07-21 | |||
| JP2014008421A | 2014-01-20 |
Attorney, Agent or Firm:
NAKATA Motomi et al. (JP)
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