Liquid treatment such as dewatering of sludge

Details Liquid treatment such as dewatering of sludge Liquid treatment such as dewatering of sludge

1986-10-02

1988-09-27

Fisher, Richard V.

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210741, 210805, 210751, 210 97, 2101952, B01D 1300, B01D 3704

Patent

active

047740027

ABSTRACT:
A method of treating a liquid, for example dewatering a sludge by ultrafiltration, in which the liquid is caused to flow repeatedly along a permeable walled tube (22) so that a filtrate passes through the wall of the tube, the progress of the treatment being monitored by monitoring the pressure difference between the ends of the tube (22). The method has enabled sludges of widely varying compositions to be dewatered to produce products of uniform viscosity, suitable for subsequent immobilization by cementation.

REFERENCES:
patent: 3794169 (1974-02-01), Sisk et al.
patent: 3846295 (1974-11-01), Gibbs
patent: 3950249 (1976-04-01), Eger et al.
patent: 3992301 (1976-11-01), Shippey et al.
patent: 4113504 (1978-09-01), Chen et al.
patent: 4113614 (1978-09-01), Rollo et al.
patent: 4191182 (1980-03-01), Popovich et al.
patent: 4420398 (1983-12-01), Castino
patent: 4487689 (1984-12-01), Galaj

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