Filtration system

Details Filtration system Filtration system

1992-02-13

1993-06-22

Sever, Frank

Liquid purification or separation

Processes

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

210652, 210798, B01D 6120, B01D 6508

Patent

active

052214796

ABSTRACT:
A dead-end type filtration system wherein a bulk (or bulk suspension) comprising a fluid containing suspended matters is filtered through a micro-filter membrane to separate the fluid form the suspended matters, back wash is periodically carried out under such conditions that pressure on the transmitted fluid side of the filter membrane is higher than pressure on the bulk side thereof, and back wash liquid together with the suspended matters desorbed form the liter membrane is discharged from the filtration system to the outside, characterized by that said filter membrane has an anisotropic structure where the pore diameters of the filter membrane are changed continuously or discontinuously in the thickness direction of the filter membrane, and the pore diameters on one side of the filter membrane are different from those on other side thereof.

REFERENCES:
patent: 3886066 (1975-05-01), Chen et al.

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