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Title:
WASTEWATER TREATMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2012/029284
Kind Code:
A1
Abstract:
A wastewater treatment method in an embodiment includes: mixing primary aggregates made of magnetic substances and a dispersion medium to make a suspension; and passing the suspension through a filter to allow the primary aggregates to remain on the filter and to form a secondary aggregate made of an aggregate of the primary aggregates. Further, the wastewater treatment method in the embodiment includes; passing wastewater through the secondary aggregate to remove suspended solids and oil in the wastewater; dispersing the secondary aggregate in a dispersion medium to decompose the secondary aggregate into the primary aggregates and to wash the primary aggregates; and collecting the primary aggregates with magnetic separation.

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Inventors:
FUKAYA TARO (JP)
MURAI SHINJI (JP)
FUJIEDA SHINETSU (JP)
TSUJI HIDEYUKI (JP)
SUZUKI AKIKO (JP)
KOHNO TATSUOKI (JP)
Application Number:
PCT/JP2011/004813
Publication Date:
March 08, 2012
Filing Date:
August 30, 2011
Export Citation:
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Assignee:
TOSHIBA KK (JP)
FUKAYA TARO (JP)
MURAI SHINJI (JP)
FUJIEDA SHINETSU (JP)
TSUJI HIDEYUKI (JP)
SUZUKI AKIKO (JP)
KOHNO TATSUOKI (JP)
International Classes:
C02F1/28; B01D35/06; B01J20/06; B01J20/26; B01J20/28; B03C1/00; B03C1/01
Domestic Patent References:
WO2008008897A22008-01-17
Foreign References:
US3803033A1974-04-09
US3923651A1975-12-02
US4201831A1980-05-06
JPH09327611A1997-12-22
JPH07102238A1995-04-18
Attorney, Agent or Firm:
SAKURA PATENT OFFICE, p.c. (1 Kandata-cho 2-chome, Chiyoda-k, Tokyo 46, JP)
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Claims:



 
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