Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1994-03-09
1995-01-03
Nessler, Cynthia L.
Liquid purification or separation
Processes
Ion exchange or selective sorption
210269, 210275, 210279, 210283, 210288, 210290, 210670, C02F 142
Patent
active
053783700
ABSTRACT:
A water treatment tank for use in a water treatment or softening system is disclosed which is operative in a treatment mode to receive untreated water through an inlet port and to pass treated water through an outlet port, and which is operative in a backwash mode to receive wash water through the outlet port and to pass waste water through the inlet port. Treatment tank has a vessel having an interior cavity which is partitioned into a top headspace portion, and a middle treatment bed space portion, and a bottom headspace portion via the placement of a pair of distributor filters mounted within the interior cavity to extend between the side walls thereof. The filters are spaced-apart, respectively, from the top end wall to define therewith the top headspace portion and the bottom headspace portion. A standpipe is provided to extend between and in fluid communication with the outlet port and the bottom headspace portion for conveying treated water from the bottom headspace portion to the outlet port when the treatment bed is operated in the treatment mode, and for conveying wash water from the outlet port to the bottom head space portion when the treatment tank is operated in the backwash mode. The treatment bed space portion between the first and the second distributor filter is filled with an ion-exchange resin, and a portion of the top headspace portion is filled with a particulate filter medium supported by the first distributor filter. The unfilled portion of the top headspace portion defines a freeboard space to accommodate the expansion of the filter medium when the treatment tank is operated in the backwash mode.
REFERENCES:
patent: 661339 (1900-11-01), Grever
patent: 1211735 (1917-01-01), Magrath
patent: 2049530 (1936-08-01), Van Eweyk
patent: 2087442 (1937-07-01), Nack
patent: 3319791 (1967-05-01), Horne
patent: 3554377 (1968-09-01), Miller
patent: 3680701 (1972-08-01), Holca
patent: 3875053 (1975-04-01), Siegers
patent: 3960721 (1976-06-01), Heskett
patent: 4305826 (1981-12-01), Moses
patent: 4359384 (1982-11-01), Brane et al.
patent: 4379855 (1983-04-01), Down et al.
patent: 4642192 (1987-02-01), Heskett
patent: 4851122 (1989-07-01), Stanley
patent: 5050772 (1991-09-01), Brane et al.
patent: 5065901 (1991-11-01), Brane et al.
patent: 5089140 (1992-02-01), Brane et al.
patent: 5116491 (1992-05-01), Brane et al.
patent: 5122274 (1992-06-01), Heskett
patent: 5135654 (1992-08-01), Heskett
patent: 5157979 (1992-10-01), Brane et al.
patent: 5300230 (1994-04-01), Brane et al.
Brane Earl P.
Cornell Boyd J.
Nessler Cynthia L.
Wm. R. Hague, Inc.
LandOfFree
Water treatment tank does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Water treatment tank, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water treatment tank will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2209195