PURPOSE: To improve a sterilization effect for a bacteria that exists in water to be treated in a water treating system.
CONSTITUTION: The water is taken from a lake or river 100 in a channel pond 111, and added with a floculant 110 to make micro suspended matters in the water into floc in a floc forming pond 112, and it is induced to a coagulator pond 113, and subjected to sedimentation, then, it is filtered in a sand filter pond 114. Treatment up to such step is a conventional clean water treating process. In addition to that a magnetization processor 1 is arranged at the preceding stage of an ozone processor 2. The water filtered by the sand filter pond 114 is subjected to magnetization treatment by the magnetization device 1, and then is subjected to ozone treatment by blowing ozonized air from an ozone generator 3 in an ozone reaction tank 2. The water treated with ozone treatment is purified by a bio-activated carbon tower 5, and it is sterilized by a chlorine 115 in a treating water tank 116, then, it is supplied as city water via a water supply pump 117.
Next Patent: CIRCULATION ADJUSTING DEVICE FOR BATHING HOT WATER