Rigid filter plate and method for producing same

Details Rigid filter plate and method for producing same Rigid filter plate and method for producing same

1987-07-24

1988-11-08

Spitzer, Robert

Liquid purification or separation

Particulate material type separator, e.g., ion exchange or...

With multi-layer beds

210291, 210504, 2105101, B01D 3920

Patent

active

047832614

ABSTRACT:
An improved rigid filter plate for use in sludge dewatering or oil and water separation is characterized by a lower layer of relatively large material and an upper layer of relatively smaller material bonded thereto, with grains of sand interspersed within the upper layer and bonded to the material making up the upper layer. The device yields high efficacy in sludge dewatering and oil and water separation, while requiring a low level of cleaning and maintenance, yet is resistant to damage from mechanical cleaning when cleaning is necessary. An efficient and economical method of producing the device is also disclosed herein.

REFERENCES:
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patent: 3292788 (1966-12-01), Schwarz
patent: 4186100 (1980-01-01), Mott
patent: 4340478 (1982-07-01), Stannard et al.
patent: 4381998 (1983-05-01), Roberts et al.
patent: 4441997 (1984-04-01), Fields
patent: 4452698 (1984-06-01), Roberts et al.
patent: 4564450 (1986-01-01), Piper et al.
patent: 4661258 (1987-04-01), Phillips
patent: 4689150 (1987-08-01), Abe et al.
patent: 4692248 (1987-09-01), Stannard et al.

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