Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1984-05-03
1986-12-16
Spear, Frank
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210650, 210488, B01D 1300
Patent
active
046295690
ABSTRACT:
Depth filter for the separation of turbidities from liquids with permeation layers (2), in which the filter bed consists of a plurality of thin permeable membrane layers (3) which are arranged one after the other and in mutually spaced relationship perpendicularly to the principal flow direction and in which the individual membrane layers (3) contain macroholes (4) through which flows the principal proportion of the liquid throughput passing through the filter. The process for the separation of turbidities from liquids in the use of such a device makes a simple regeneration for the filter possible wherein the filter is regenerated by means of a short time cross-wise flushing of the filter bed with a superimposed upward or downward flow. In addition in the flushing phase the liquid may be exposed to an ultrasound blast.
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patent: 3238056 (1966-03-01), Pall et al.
patent: 3246767 (1966-04-01), Pall et al.
patent: 3353682 (1967-11-01), Pall et al.
Dorson, Jr. et al., Int. Pub. #WO82/03567, 10-1982.
Encyclopedia of Technical Chemistry, 4th Edition, vol. 2, Chapter on Filtration, pp. 154 to 198, 1972.
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