Title:
排水処理装置
Document Type and Number:
Japanese Patent JP5190529
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a filtration device, which can efficiently purify even raw water with high SS concentration which contains many foreign substances while preventing clogging of a screen or filter medium as much as possible.SOLUTION: The filtration device includes: a filter medium support plate 42 provided at a lower portion inside an after-filtration container 40; the filter medium 43 filled above the filter medium support plate 42; a screw ribbon agitator 44 for filter medium agitation, which is provided at the center of the post-filtration container 40; a filtered water inflow portion 40b provided above a filling portion for the filter medium 43; and a backwash water inlet portion 40e and a cleaning drainage discharge portion 40f provided at a lower portion of the filtration container 40. The agitator 44 includes a rotating shaft 44a having an air passage inside, and a plurality of screw support members 44b protruded radially from the circumferential wall of the rotating shaft 44a to support a screw ribbon 44c, each of the screw support members including an air passage communicating with the air passage of the rotating shaft.
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| JPS51122941 | PROCESS FOR TREATING SEWAGE WATER |
Inventors:
Susumu Ishida
Yoshito Yamanishi
Yoshito Yamanishi
Application Number:
JP2011159333A
Publication Date:
April 24, 2013
Filing Date:
July 20, 2011
Export Citation:
Assignee:
Maesawa Industry Co., Ltd.
International Classes:
C02F3/08; B01D24/00; B01D24/44; B01D24/46; B01D29/00; B01D29/01; B01D29/62; B01D29/64; B01D29/66; B01D29/94; B01F27/96
Domestic Patent References:
| JP1210099A | ||||
| JP2001276864A | ||||
| JP11077075A | ||||
| JP9024212A | ||||
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Foreign References:
| WO2001083076A1 |
Attorney, Agent or Firm:
Kazuhiko Kido
Yoshihiko Kido
Yoshihiko Kido