In situ filter cleaning

Details In situ filter cleaning In situ filter cleaning

1996-12-10

1999-09-28

Fortuna, Ana

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210650, 210748, 204554, B01D 1504, B01D 6100

Patent

active

059582421

ABSTRACT:
A filter which can be cleaned in situ consists of a filter membrane (33), and fluid permeable electrodes (34, 35). The membrane may be one of the electrodes, or may be electrically non-conducting but integral with or in contact with one of the electrodes (34). The electrodes (34, 35) are separated from each other only by a fluid permeable electrically insulating sheet. This sheet may be less than 1 mm thick, and may be the filter membrane (33). The filter is cleaned by periodic brief applications of electric current between the electrodes (34, 35) so that gas is generated electrolytically, and the close spacing of the electrodes (34, 35) reduces the electric power required.

REFERENCES:
patent: 4167480 (1979-09-01), Mach
patent: 4331523 (1982-05-01), Kawasaki
patent: 4493756 (1985-01-01), Degren
patent: 4594138 (1986-06-01), Thompson
patent: 4623365 (1986-11-01), Bergman
patent: 5141714 (1992-08-01), Obuchi
patent: 5597479 (1997-01-01), Johnson

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