Title:
SLOW FILTRATION DEVICE HAVING EXCELLENT ABILITY TO TREAT MICROORGANISMS
Document Type and Number:
WIPO Patent Application WO/2010/125662
Kind Code:
A1
Abstract:
Provided is a slow filtration device by which raw water collected from a river or underground can be treated to give drinkable water or the like within a short time after newly assembling. A slow filtration device comprising a sand filter layer, a raw water supply port and a discharge port, which is equipped with a net (15) being provided above the sand filter layer (13) in a filtration tank (11) so as to cover the sand filter layer (13) and serving as a support for the growth of algae; a heater (18) being provided just below the net (15) and maintaining the net (15) at a definite temperature; and an algae-rearing pump (16) being provided above the net (15) in the filtration tank (11) and irradiating light to the net (15) to promoting the growth of the algae.
Inventors:
MIYAZAKI TOYOFUMI (JP)
Application Number:
PCT/JP2009/058446
Publication Date:
November 04, 2010
Filing Date:
April 30, 2009
Export Citation:
Assignee:
MIYAZAKI TOYOFUMI (JP)
International Classes:
C02F3/32; B01D24/02; B01D24/46; B01D29/62
Domestic Patent References:
| WO2004035484A1 | 2004-04-29 |
Foreign References:
| JPS6064695A | 1985-04-13 | |||
| JPS53105053A | 1978-09-12 | |||
| JPH1128498A | 1999-02-02 | |||
| JPH03270793A | 1991-12-02 | |||
| JP2005185925A | 2005-07-14 | |||
| JP2008207154A | 2008-09-11 | |||
| JP2005288417A | 2005-10-20 | |||
| JP2004066217A | 2004-03-04 | |||
| US5032261A | 1991-07-16 | |||
| JPS5518227A | 1980-02-08 | |||
| JP2001025611A | 2001-01-30 | |||
| JP2005211804A | 2005-08-11 |
Attorney, Agent or Firm:
ISHII, Hisao et al. (JP)
Hisao Ishii (JP)
Hisao Ishii (JP)
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