Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1995-06-07
1997-06-17
Nessler, Cynthia L.
Liquid purification or separation
Processes
Ion exchange or selective sorption
210142, 210269, 210279, C02F 142
Patent
active
056393776
ABSTRACT:
A method and apparatus for regenerating an ion exchange resin utilizing recycled solution or reused regeneration solution. At least one tank containing an ion exchange material is provided having a spaced first and second ports which define a fluid flow path through the ion exchange media. Water to be treated is introduced at an inlet and flows through the resin bed ultimately being discharged at the outlet. A polishing zone is located at the outlet which includes highly regenerated, uncontaminated resin. The media is regenerated in a multi-step process in which regeneration solution is introduced into the resin bed in two separate steps. In the first step, a first regeneration solution is introduced into the resin bed upstream from the polishing zone, flows in a countercurrent direction and is discharged through the inlet of the tank. A second regeneration fluid is introduced at the outlet of the tank and flows in a countercurrent direction through the entire resin bed. The first solution is introduced by an injection conduit that extends from a fitting located at the tank inlet and terminates in slots that open upstream of the polishing zone. Following the regeneration solution steps, the injection conduit is flushed and the entire bed rinsed, with rinse water, using several rinse steps.
REFERENCES:
patent: 654479 (1900-07-01), McNally
patent: 2692244 (1954-10-01), Kunin et al.
patent: 2773829 (1956-12-01), Hunting
patent: 2773830 (1956-12-01), Farmer et al.
patent: 2973097 (1961-02-01), Snider
patent: 3143500 (1964-08-01), Damgaard
patent: 3169110 (1965-02-01), Rudelick
patent: 3240699 (1966-03-01), Duff et al.
patent: 3317044 (1967-05-01), Marks
patent: 3402126 (1968-09-01), Cioffi
patent: 3517817 (1970-06-01), Hitzel
patent: 3617558 (1971-11-01), Jones
patent: 3618589 (1971-11-01), Tavani
patent: 3655587 (1972-04-01), Bouchard et al.
patent: 3711401 (1973-01-01), Hamilton et al.
patent: 3788960 (1974-01-01), Patil et al.
patent: 4039443 (1977-08-01), Tahara et al.
patent: 4163717 (1979-08-01), Blind et al.
patent: 4220531 (1980-09-01), Robison
patent: 4379855 (1983-04-01), Down et al.
patent: 4648976 (1987-03-01), Chen
patent: 5022994 (1991-06-01), Avery et al.
patent: 5069779 (1991-12-01), Brown et al.
patent: 5108616 (1992-04-01), Kunz
patent: 5116511 (1992-05-01), Green et al.
patent: 5346623 (1994-09-01), Kunz et al.
patent: 5348659 (1994-09-01), Kunz et al.
patent: 5415765 (1995-05-01), Banham et al.
Banham William S.
Cook Stephen W.
Stacy Larry W.
Kinetico Engineered Systems, Inc.
Nessler Cynthia L.
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