Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1992-07-02
1993-08-17
Drodge, Joseph W.
Liquid purification or separation
Processes
Ion exchange or selective sorption
55315, 210141, 210188, 210192, 210258, 210259, 210703, 210806, 4221863, 96142, 96136, C02F 900
Patent
active
052365956
ABSTRACT:
An improved filtration system involving the use of ultraviolet irradiation, ozonation, chlorination, reactive filtration media, chemical treatment, compressed air aeration, air emission control, and central flow control is described. The process system and apparatus of the present invention mainly include a liquid pump, an ultraviolet pretreatment means, a central flow control, an air emission control means, a reactive pressure filter, a process tank, at least one chemical feeder means, an ultraviolet post-treatment means, and an aeration means. The filter media are of reactive type, including diatomaceous earth, granular activated carbon, fibrous activated carbon, granular metal medium, greensand, neutralizing sand, silica sand, activated alumina, ion exchange resins, polymeric adsorbents, chemical treated adsorbents, manganese oxide, coal, porous plastic medium, porous stainless steel medium, porous ceramic medium, bacteriostatic filter medium, porous paper filter medium, porous carbon filter medium, coalescing filter medium, fiberglass filter medium, or combinations thereof. The process tank contains and handles regenerating chemicals, flocculating chemicals, filter aids, or recirculating water. The reactive filter media of this invention are regenerated by either chemical reactions or aeration for reuse to prolong the filter media's service life and to reduce the operation and maintenance costs. Said air emission control means is provided when compressed air aeration is applied to said pressure filter for regeneration of said reactive filter media. The apparatus of this invention is compact and simple, and can cost-effectively remove suspended, dissolved, volatile, radioactive and living contaminants from a contaminated liquid.
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Kurylko Lubomyr
Wang Lawrence K.
Wang Mu H. S.
Drodge Joseph W.
International Environmental Systems, Inc., USA
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