Method and apparatus for dewatering thickened sludge

Details Method and apparatus for dewatering thickened sludge Method and apparatus for dewatering thickened sludge

1976-12-21

1978-05-30

Sever, Frank

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

100 42, 100 90, 100187, 100218, 100223, 210 70, 210 73R, 210 77, 210 82, 210138, 210152, 210241, 210251, 210297, 210314, 210350, 210386, 210393, 210406, 210411, 210416R, 210455, B01D 3322, C02C 118

Patent

active

040922472

ABSTRACT:
Process for dewatering thickened sludge comprising the steps of depositing thickened sludge onto a porous support, partially dewatering the thickened sludge by establishing a vacuum within said porous support, compressing the partially dewatered sludge on said porous support at a pressure of from 1 to 10 kp/cm.sup.2 to further dewater the sludge and to form a sludge cake, compressing the sludge cake on the porous support at a pressure of from 10 to 300 kp/cm.sup.2 to further dewater the sludge cake and discharging the dewatered sludge cake from the porous support.

REFERENCES:
patent: 761686 (1904-06-01), Kirshner
patent: 3552454 (1971-01-01), Deming
patent: 3772144 (1973-11-01), Luthi et al.

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