Method for separating solid particles from a liquid

Details Method for separating solid particles from a liquid Method for separating solid particles from a liquid

1991-08-16

1993-10-05

Dawson, Robert A.

Liquid purification or separation

Processes

Separating

210780, 210784, 210791, 210391, B01D 2428

Patent

active

052501981

ABSTRACT:
An improved method for separating solid particles from liquids, such as dewatering and thickening of sludge collected in a container (1), involves the use of at least one drainage unit (9) having doubled screened jacket walls (25, 26) defining a dewatering chamber (10). The liquid relieved of solids within the chamber is subjected to a turbulent motion acting against said screened jacket walls for obstruction of the solids deposition at the wall surfaces of the chamber facing the sludge in the container. The turbulent motion is obtained by a forced fluid F introduced in the chamber through one or more tubes (30, 31). The fluid may favorably be in form of compressed air or water returned from the reject system (14, 16).

REFERENCES:
patent: 3954613 (1976-05-01), Worldidge
patent: 4867870 (1989-09-01), Kettlety et al.
patent: 5094731 (1992-03-01), Ramsey et al.
patent: 5147354 (1992-09-01), Heck
New Swedish Technology, vol. 8, No. 1, p. 2.

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