Title:
WASTE WATER TREATMENT METHOD
Document Type and Number:
Japanese Patent JP2009050780
Kind Code:
A
Abstract:
To provide a waste water treatment method which is satisfactory in a filtration operation performance in a water treatment using a biological treatment tank.
In the waste water treatment method, one or two or more hollow fiber membrane elements 10 are dipped in the biological treatment tank 100, air is diffused from an air diffusion means 133 inside the hollow fiber membrane elements 10, when filtering by the hollow fiber membrane elements 10 and when diffusing air into the biological treatment tank 100 during filtration, and air is diffused from air diffusion means 122, 125 outside the hollow fiber membrane elements 10 for filtering operation.
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Inventors:
HAMADA TOYOZO
Application Number:
JP2007218812A
Publication Date:
March 12, 2009
Filing Date:
August 24, 2007
Export Citation:
Assignee:
DAICEL CHEM
International Classes:
B01D65/08; B01D63/02; B01D65/02; C02F1/44; C02F3/12
Attorney, Agent or Firm:
Satoshi Furuya
Takahiko Mizobe
Shinji Mochida
Yoshitsune Kazumasa
Takahiko Mizobe
Shinji Mochida
Yoshitsune Kazumasa