Method and apparatus for fluid treatment by reverse osmosis

Details Method and apparatus for fluid treatment by reverse osmosis Method and apparatus for fluid treatment by reverse osmosis

1987-09-16

1989-03-21

Spear, Frank

Liquid purification or separation

Processes

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

210652, 2101952, B01D 1300

Patent

active

048140864

ABSTRACT:
Either of the two relatively large capacity tanks can be connected in a high pressure loop or system including a reverse osmosis membrane vessel and a circulating pump. When the pressure is high enough in this loop, product is drawn from the vessel. A feed pump supplies fluid to the tank not in the high pressure system for flushing that tank. The feed pump also supplies fluid to the input of a high pressure pump which provides make-up fluid to the high pressure system at a pressure sufficient to sustain reverse osmosis. The tanks are interchanged periodically. This system only has to provide high pressure fluid at a rate equivalent to the rate of withdrawal of product from the system.

REFERENCES:
patent: 4014787 (1977-03-01), Shorr
patent: 4243523 (1981-01-01), Pelmulder
patent: 4411781 (1983-10-01), Schnabel et al.
patent: 4579662 (1986-04-01), Jonsson

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