Reverse osmosis water purification systems

Details Reverse osmosis water purification systems Reverse osmosis water purification systems

1990-03-20

1991-04-09

Spear, Frank

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Fluid current controlled cyclic system

210134, 210136, 2102572, B01D 6108

Patent

active

050062344

ABSTRACT:
A reverse osmosis water purification system has a feed water line and outlets for reject and product water. Instead of wasting the reject water by allowing it to flow to a drain, the reject water is returned to the water feed line downstream of the reverse osmosis system so that is can be used for other purposes. A section of the water feed line has a flow restrictor which estabishes a dynamic pressure drop. Feed water for the reverse osmosis system is taken off the feed line upstream of the restrictor and reject water is returned downstream of the restrictor, thereby reducing the water wastage due to the reverse osmosis process.

REFERENCES:
patent: 4190537 (1980-02-01), Tohdreau
patent: 4604194 (1986-08-01), Ehtingh
patent: 4743366 (1988-05-01), Burrows
patent: 4909934 (1990-03-01), Brown et al.

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