Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1997-03-28
1999-02-02
Woo, Jay H.
Liquid purification or separation
Processes
Ion exchange or selective sorption
210284, 210507, 210508, 210692, 210694, 210908, C02F 128
Patent
active
058660097
ABSTRACT:
The invention aims to provide an apparatus for purifying water containing organic halides therein improved so as to substantially achieve perfect removal of organic halides from water which has conventionally been considered to be impossible. The object set forth above is achieved, according to the invention, by an apparatus for purifying water containing organic halides therein characterized in that particles, fibers, nonwoven fabric, porous body or sintered body containing hydroxycarboxylic acid or polymer thereof having a chemical structure expressed by general formula: ##STR1## where R1-R6 are identical or different and represent hydrogen atom, hydroxyl-, carboxyl-, amino-, cyano- or alkyl-group having 1-5 carbons, p represents a natural number 1-10, and q and r represent an integer 0-10) as a main ingredient is used as organic halide adsorbent; and a residual concentration of organic halides in water can be decreased to the order of ppb.
REFERENCES:
patent: 4276179 (1981-06-01), Soehngen
patent: 4859559 (1989-08-01), Trout
patent: 5300685 (1994-04-01), Scates et al.
patent: 5460792 (1995-10-01), Rosenbaum
patent: 5645374 (1997-07-01), Lesage et al.
Morrison Betsey J.
Woo Jay H.
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