Bacteriostatic activated carbon filter

Details Bacteriostatic activated carbon filter Bacteriostatic activated carbon filter

1988-09-14

1990-02-06

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

210679, 210694, C02F 128

Patent

active

048986763

ABSTRACT:
Polymerized salts of polymerizable anionic monomers with cationic germicides are chemically grafted onto activated carbon in a manner to form a permanent, covalent bond thereon. The grafting of such germicides onto the activated carbon imparts permanent bacteriostatic properties thereto and the resulting bacteriostatic activated carbon can be used for the purification of drinking water over prolonged periods of time. The passage of contaminated water across this activated carbon chemically grafted with the polymerized salt of the cationic germicide results in purification of the water which remains free of elevated bacteria counts often associated with "first flush" effluents. Mere absorption of such or any germicide into the pores of the activated carbon results in desorption and leaching out of the germicide into the effluent.

REFERENCES:
patent: 3325402 (1967-06-01), Erskine
patent: 3698931 (1972-10-01), Horowitz

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