Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1980-07-31
1982-03-16
Bashore, S. Leon
Liquid purification or separation
Processes
Ion exchange or selective sorption
210 961, 525334, B01D 4102
Patent
active
043200109
ABSTRACT:
A method and apparatus for initiating the regeneration cycle of an ion exchange resin type water softener based upon the movement of the "hardness front" through the resin bed as water being treated is passed therethrough. Electrical probes are provided at predetermined longitudinally spaced locations and the difference in potential between the probes is measured, as is the rate of change of this potential with respect to time. It is found that as the hardness front passes between the probes, a detectable change in potential occurs which may be applied to an electronic circuit for generating a control signal which may initiate the regeneration cycle of the water softener subsequent to the arrival of the hardness front in the zone between the probes.
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Sutherland George K.
Tucci Mario A.
Bashore S. Leon
Haugen Orrin M.
Lander F. H.
Nikolai Thomas J.
Sys-Tec, Inc.
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