Apparatus for the dewatering of sludge

Details Apparatus for the dewatering of sludge Apparatus for the dewatering of sludge

1978-04-19

1980-05-13

Castel, Benoit

Liquid purification or separation

Serially connected distinct treating with or without storage...

One unit inside another

210374, 210403, 100117, 100146, B04B 304

Patent

active

042027730

ABSTRACT:
Clarifier sludge is dewatered to a relatively low residual moisture content by passing it axially in one direction through an inner centrifuge drum in which initial dewatering takes place in a first centrifugal force field. Immediately thereafter the solids phase is introduced into an outer second drum having a diameter approximately twice that of the first and in which the solids are subjected to a centrifugal force field about twice as great as the first force field. In each drum the solids are displaced by wipers or scrapers (strippers) preferably of the worm type and the liquid is drawn from the drum at the opposite axial end from that at which the solids are removed.

REFERENCES:
patent: 3437209 (1969-04-01), Evans
patent: 3658182 (1972-04-01), Bye-Jorgensen et al.
patent: 3938434 (1976-02-01), Cox
patent: 4062776 (1977-12-01), Blok

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