Process for the batch filtering of suspensions

Details Process for the batch filtering of suspensions Process for the batch filtering of suspensions

1978-05-02

1980-07-08

Gilreath, Stanley N.

Presses

Methods

With pre-enclosing in textile

100 37, 100101, 100120, 100207, 210 77, B30B 506, B30B 1530

Patent

active

042111625

ABSTRACT:
For the batch filtration of suspensions by application of external pressure, after the pressing of the suspension in the press-chamber space and before entrance of the resultant press cake into at least one subsequent press-chamber space the structure of the press cake is changed by shearing forces and the press cake is curved and at least partially torn apart. In the case of municipal sludge the flaked sludge is subjected in a first pressing zone to slow increase of pressure and a pressure of up to about 1 bar and then is subjected in at least one following press zone to a pressure increase which is more rapid than in the first press zone, up to a pressure of about 3 bars.

REFERENCES:
patent: 3232219 (1966-02-01), Gunkel
patent: 3942433 (1976-03-01), Wohlfarter
patent: 4019431 (1977-04-01), Bastgen

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