Annular module for filtering a pressurized liquid by reverse osm

Details Annular module for filtering a pressurized liquid by reverse osm Annular module for filtering a pressurized liquid by reverse osm

1987-05-13

1989-04-11

Fisher, Richard V.

Liquid purification or separation

Casing divided by membrane into sections having inlet

Coiled membrane

210443, 210492, 2104971, B01D 1300, B01D 2906

Patent

active

048204137

ABSTRACT:
The invention relates to an annular module for filtration by reverse osmosis of a liquid under pressure. This module comprises a support formed by a tubular spool (1) having a central open volume along the entire spool height and provided with a slit (4) issuing into its peripheral face and extending along a generatrix. This slit communicates with a duct (5) formed in the thickness of the spool and issuing outside thereof at the end of a stud (3). The reverse osmosis filtration membranes (6, 7) are helically wound around the spool; the inner turn of the membranes are impermeably fastened on the peripheral surface of the spool in such a manner that the slit (4) enters between the two membranes of said inner turn.

REFERENCES:
patent: 3857785 (1974-12-01), Martinez
patent: 4452696 (1984-06-01), Lopez
patent: 4476022 (1984-10-01), Doll
patent: 4517085 (1985-05-01), Driscoll et al.
patent: 4548714 (1985-10-01), Kirwin, Jr. et al.

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