RE-PURIFICATION TREATMENT METHOD OF TAP WATER AND RE-PURIFICATION TREATMENT EQUIPMENT THEREFOR

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PROBLEM TO BE SOLVED : To provide a re-purification treatment method of tap water capable of easily re-purifying tap water in large quantities, and re-purification treatment equipment. SOLUTION : Tap water 10 is guided to an activated carbon adsorbing tank 2 filled with activated carbon having a particle size of a 0.1-2.5 mm to be subjected to activated carbon treatment and the activated carbon-treated water 12 is guided to a fine sand filtration device 3 to be subjected to microbial treatment. The tap water 10 before subjected to activated carbon treatment in the activated carbon adsorbing tank 2 may be subjected to aeration treatment in an aeration tank 1. The purified water 13 microbially treated in the fine sand filtration device 3 is stored in a water tank 4 to be subjected to ultraviolet sterilization treatment or chlorine injection treatment. The water of the water tank 4 is again returned to the activated carbon adsorbing tank 2 to be subjected to circulating water purifying treatment.