Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1993-01-04
1994-04-05
Nessler, Cynthia L.
Liquid purification or separation
Processes
Ion exchange or selective sorption
210670, 210 88, 210 98, 210142, B01D 1504
Patent
active
053002300
ABSTRACT:
A method is disclosed for the cyclic regeneration of a water softening system having a plurality of parallel water treatment units, N, each containing a water softening treatment bed which requires periodic regeneration. The method entails first calculating a volume of water to be treated per cycle, V.sub.s, by dividing the capacity of the smallest capacity treatment unit by N. Water is then treated with all the treatment units until V.sub.s water has been treated by any of said units. Once V.sub.s water has been treated by any of the units, an arbitrarily selected first unit is subjected to regeneration while water is treated with all the remaining units. The process is continued by sequentially selecting the next remaining treatment unit for regeneration once another V.sub.s volume of water has been treated by any of the units.
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Brane Earl P.
Tucker David L.
Nessler Cynthia L.
Wm. R. Hague, Inc.
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