Method and apparatus for drying sludge using movable plates

Details Method and apparatus for drying sludge using movable plates Method and apparatus for drying sludge using movable plates

1985-09-26

1987-05-12

Fisher, Richard V.

Liquid purification or separation

Processes

Separating

210772, 210808, 210387, 210399, 210400, 34 15, 34217, 34242, B01D 2902, B01D 3700, C02F 1112

Patent

active

046648135

ABSTRACT:
A method and apparatus for dewatering and drying sludge. A pair of upper and lower members form a closed chamber into which sludge is poured. Sidewalls of the upper member are pressed against the lower member to seal the chamber. Compressed air supplied at a pressure P.sub.1 to a continuous groove in the lower edge of the sidewalls flows across the sloped inside surfaces of the sidewalls and supplements air supplied to the chamber at a somewhat lower pressure level P.sub.2, the combined pressures P.sub.1 and P.sub.2 in said chamber forcing liquid from said sludge through porous media in the bottom of the chamber. Air from the continuous groove aids in releasing the dried sludge from the chamber when the upper and lower members are separated.

REFERENCES:
patent: 3443695 (1969-05-01), O'Neill
patent: 3899426 (1975-08-01), Hirs
patent: 4267060 (1981-05-01), Miller

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