FIELD: chemistry.
SUBSTANCE: drinking water filter comprises an inlet being in fluid connection to an outlet, a halogen recovery system arranged between the presented inlet and outlet, a filtering material containing chitosan or its derivative and arranged between the presented halogen recovery system and outlet, and a cleaning barrier arranged between the presented filtering material and outlet. A method for water purification involves passing the water through the halogen recovery system, passing the water through the filtering material, and passing the water through a cleaning barrier. The water purification system comprises the inlet being in the fluid connection to the outlet, halogenated resin between the inlet and outlet, and halogenated chitosan between the above halogenated resin and outlet.
EFFECT: more effective water purification.
33 cl, 3 dwg, 7 ex, 6 tbl
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