Process for the dewatering of solids suspended in water and scre

Details Process for the dewatering of solids suspended in water and scre Process for the dewatering of solids suspended in water and scre

1989-11-03

1991-04-23

Hart, Charles

Liquid purification or separation

Processes

Including controlling process in response to a sensed condition

210770, 210788, 210197, 210145, 210415, 210488, 100117, C02F 100

Patent

active

050097954

ABSTRACT:
Solids contained in waste water are separated and dewatered by a separator comprising a cylindrical strainer basket and a rotary screw disposed in said basket. The screw terminates short of an outlet end of the basket. Waste water introduced into the separator is advanced by the screw until a solids slug is formed between a discharge end of the screw and a solids discharge formed by a cylindrical tube extending forwardly from the basket. About seventy to ninety-five percent of the slug is contained in the basket and is pressed laterally against a wall of the basket to promote the removal of water. The terminal portion of the screw tapers in order to maximize the compaction of the solids slug.

REFERENCES:
patent: 3235087 (1966-02-01), Andrews et al.
patent: 4200537 (1980-04-01), Lamort
patent: 4214377 (1980-07-01), Maffet
patent: 4260488 (1981-04-01), Condolios
patent: 4291619 (1981-09-01), Hunt et al.
patent: 4309291 (1982-01-01), Probstein et al.
patent: 4347134 (1982-08-01), Svehaug
patent: 4358371 (1982-11-01), Jameson
patent: 4520724 (1985-06-01), Castarelli
patent: 4818403 (1989-04-01), Nagaoka
"Verfahrenstechnik des Separienrens von Flussigmist" (Federal Research Institution for Agriculture, Braunschweig-Volkenrode, published in Grundl. Lantechnik, vol. 37 (1987), No. 3, pp. 98-107.

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