Pretreatment filter press dewatering system

Details Pretreatment filter press dewatering system Pretreatment filter press dewatering system

1975-11-17

1977-11-22

Granger, Theodore A.

Liquid purification or separation

Serially connected distinct treating with or without storage...

Diverse

210386, 210400, 210526, B01D 3302

Patent

active

040595277

ABSTRACT:
An improved water removal in a filter press used in sludge treatment processes, typically in a sewage plant, is provided through the addition of a pretreatment stage where water is removed to an appreciable extent. The filter press pretreatment system is based upon continuously circulating filter pockets into which flocculant-treated sludge has been added, a significant amount of the water from the thus clarified sludge being removed through the combination of the use of this pretreatment and in this pretreatment using filter pockets of variable volume.

REFERENCES:
patent: 2907447 (1959-10-01), Offutt et al.
patent: 3230866 (1966-01-01), Branders et al.
patent: 3458046 (1969-07-01), Passavant
patent: 3595400 (1971-07-01), Peterson
patent: 3615011 (1971-10-01), Eakins

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