Liquid purification or separation – Constituent mixture variation responsive – With membrane
Patent
1995-11-22
1997-07-15
Drodge, Joseph W.
Liquid purification or separation
Constituent mixture variation responsive
With membrane
2101952, 2102572, B01D 6112
Patent
active
056479735
ABSTRACT:
A filtration system comprising a reverse osmosis unit having an inlet thereto, a permeate outlet and a concentrate outlet wherein a first conduit extends from a source upstream of the reverse osmosis unit to the liquid inlet, a second conduit extends from the concentrate outlet wherein a flow control mechanism controls the amount of concentrate flow to the third and fourth conduits, the third conduit being connected to the first conduit while a conductivity sensor on the first conduit is mounted downstream of a point where the third conduit connects to the first conduit, the conductivity sensor being connected to the flow control mechanism to control the amounts of concentrate which are directed to the third and fourth conduits in accordance with the conductivity of the liquid. The arrangement allows one to approximate a measure of the total dissolved solid and thereby maximize the efficiency of the system and avoid unnecessary dumping of liquid to a drain.
REFERENCES:
patent: 4773991 (1988-09-01), Aid
patent: 4784771 (1988-11-01), Wathen et al.
patent: 5076913 (1991-12-01), Miller et al.
patent: 5244579 (1993-09-01), Horner et al.
Drodge Joseph W.
Fincham Eric
Master Flo Technology Inc.
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