Process for removal of trihalocarbons from water

Details Process for removal of trihalocarbons from water Process for removal of trihalocarbons from water

1986-09-26

1988-02-16

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

210691, C02F 128

Patent

active

047253614

ABSTRACT:
Water contaminated with a trihalocarbon is passed through a first or second bed containing particles of an activated composite adsorbent comprising alumina and zeolite. The trihalocarbon is adsorbed onto the particles, thereby reducing trihalocarbon concentration in the water. The adsorbed trihalocarbon is reacted with air or steam at an elevated temperature in order to regenerate the adsorbent particles for reuse. Gaseous HCl produced in the reaction with air or steam may be adsorbed in a third bed containing adsorbent agglomerates.

REFERENCES:
patent: 3130007 (1964-04-01), Breck
patent: 3732326 (1973-05-01), Chen
patent: 3899310 (1975-08-01), Chi et al.
patent: 3917544 (1975-11-01), Michel
patent: 4374654 (1983-02-01), McCoy
patent: 4549966 (1985-10-01), Beall
Bouwer et al., "Removal of Trace Chlorinated Organic Compounds by Activated Carbon Fixed-Film Bacteria", Environ. Sci. Technol., vol. 16, No. 12, 1982, pp. 836-843.
Kelleher et al., "Investigation of Volatile Organics Removal", Journal of New England Water Works Association, 95, No. 2, 1981, pp. 119-133.

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