WATER-PURIFICATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a purification method for water by which suspended solid causing cloudiness of water is removed and cloudiness of water is prevented. SOLUTION: Comparatively large refuse such as hair and dirt is removed by a prefilter composing sponge, wool or nonwoven fabric in the prefilter part. Physical adsorption for adsorbing suspension particles 35 of <=0.1μm particle diameter to the pores 43 of activated carbon 42 is performed by a microorganism filter. Biolodegration for taking soluble suspended solid 36 into microorganisms 44 of the activated carbon 42 is performed. Suspension particles 364 of 0.1-10μm particle diameter are stuck to a microorganism membrane 45 and a polymer membrane 46. Thereafter, suspension particles 33 having >=10μm particle diameter are removed by a main filter 14.