Purification of liquids with treated filter aid material and act

Details Purification of liquids with treated filter aid material and act Purification of liquids with treated filter aid material and act

1979-09-17

1980-12-09

Therkorn, Ernest G.

Liquid purification or separation

Processes

Ion exchange or selective sorption

210504, 210505, 210508, 210694, 210777, B01D 3702

Patent

active

042383340

ABSTRACT:
A method and filter bed for removing impurities from liquids wherein the filter bed comprises a mixture of treated filter aid material and an active particulate material having opposite surface charges in aqueous suspension. The filter aid material has been treated to produce the desired surface charge. The identity of the active particulate material depends on the application. Examples are organic polymeric absorbents, zeolites, bentonite, zirconium oxide, zirconium phosphate, activated alumina, ferrous sulfide, activated carbon and diatomaceous earth.

REFERENCES:
patent: 3242073 (1966-03-01), Guebert
patent: 3250702 (1966-05-01), Levendusky
patent: 3352424 (1967-11-01), Guebert
patent: 3600329 (1971-08-01), Enriquez
Betz Handbook of Industrial Water Conditioning, 7th Edition, 1976, pp. 53-56.
Balthazar, J., "Belgian Experience with Powdered Resin Filter," Trib. Cebedeaux, Oct. 1969.
Balthazar, J. "Methodical Investigations of Continuous Condensate Purification with Powdered Resin Alluvial Filters," VGB Feed Water Convention 1971.
Balthazar, J. "Ion Purification of Condensates by Powdered Resin Filters," Laborelec, Report NI 1455.
Problems of Chemistry and Physics of Power Plants.
The Performance and Possibilities of Application of Filters Utilizing Powdered Ion Exchange Resins, Aug. 27, 1968.

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