Title:
BACKWASHABLE FILTRATION APPARATUS AND METHOD OF BACKWASHING FILTRATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2003/037477
Kind Code:
A1
Abstract:
A method of backwashing a filtration apparatus (1), which comprises allowing a compressed gas to backflow from the secondary side (5) of the filtration apparatus (1), to thereby generate bubbles in the fluid to be filtered in the primary side (4) of the filtration apparatus (1) and disperse a material in a gel form and&sol or viscous material captured by the filter element (3) of the filtration apparatus (1) into the fluid to be filtered in the primary side (4), and then discharging the dispersed material in a gel form and&sol or viscous material from the filtration apparatus (1) together with the fluid to be filtered in the primary side (4). The method allows the backwash of a filtration medium with a filtration apparatus being installed, which leads to the achievement of filtration of a fluid to be filtered containing a lot of a material in a gel form or viscous material.
Inventors:
SAKAMOTO ATSUSHI (JP)
KATAOKA HISAYUKI (JP)
KATAOKA HISAYUKI (JP)
Application Number:
PCT/JP2002/011387
Publication Date:
May 08, 2003
Filing Date:
October 31, 2002
Export Citation:
Assignee:
PALL CORP (US)
SAKAMOTO ATSUSHI (JP)
KATAOKA HISAYUKI (JP)
SAKAMOTO ATSUSHI (JP)
KATAOKA HISAYUKI (JP)
International Classes:
B01D29/21; B01D41/04; B01D65/02; (IPC1-7): B01D29/07; B01D29/66; B01D39/16; B01D65/02
Domestic Patent References:
| WO1997024169A2 | 1997-07-10 |
Foreign References:
| EP0648524A1 | 1995-04-19 | |||
| JPS618192A | 1986-01-14 | |||
| JPH05168866A | 1993-07-02 | |||
| JP2001340732A | 2001-12-11 |
Attorney, Agent or Firm:
Shamoto, Ichio (New Ohtemachi Bldg. 2-1 Ohtemachi 2-chome Chiyoda-ku, Tokyo, JP)
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