Mechanical dewatering process

Details Mechanical dewatering process Mechanical dewatering process

1978-03-29

1979-07-10

Feldman, Peter

Liquid purification or separation

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

Responsive to fluid flow

100 37, 100117, B01D 3702

Patent

active

041607325

ABSTRACT:
A process for mechanically dewatering fibrous organic waste such as sewage sludge. The underwatered waste is passed into the first end of a cylindrical dewatering zone having a porous outer wall. A helical blade rotated within the dewatering zone pressurizes the waste and moves it to the outlet at the second end of the dewatering zone. A filter media comprising a cylindrical substantially unagitated layer of fibrous material derived from the waste is retained within an annular space located between the outer edge of the helical blade and the inner surface of the porous wall.

REFERENCES:
patent: 1151186 (1915-08-01), Johnson
patent: 1772262 (1930-08-01), Naugle
patent: 3997441 (1976-12-01), Pamplin, Jr.

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