Filtration of liquid media under conditions of non-steady tangen

Details Filtration of liquid media under conditions of non-steady tangen Filtration of liquid media under conditions of non-steady tangen

1992-02-13

1993-08-31

Drodge, Joseph W.

Liquid purification or separation

Processes

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

137876, 21032169, 21032189, 210456, 210650, 95 46, 96 6, B01D 6502, B01D 6508

Patent

active

052406121

ABSTRACT:
Filterable liquid media are continuously filtered by circulating same in a closed circulation loop, to and tangentially through a filtration module provided therealong which confines at least one filtration membrane, e.g., a microfiltration, ultrafiltration or reverse osmosis membrane, and which includes a permeate outlet, and by adjusting the flowrate but not the driving pressure of circulating liquid medium, notably by means of an apertured and perforated rotating disc, as to establish a non-steady periodic pseudophysiological flow thereof, at least over the working face surfaces of the at least one membrane.

REFERENCES:
patent: 3648754 (1972-03-01), Sephton
patent: 4632756 (1986-12-01), Coplan et al.
patent: 4990526 (1991-02-01), Schmidt
patent: 4995977 (1991-02-01), Hilgendorff et al.
patent: 5105851 (1992-04-01), Fogelman
patent: 5120445 (1992-06-01), Colman
patent: 5132015 (1992-07-01), Down

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