Eutrophication of raw water

摘要

The present invention provides an efficient and effective purification treatment method of raw water including algae.;The raw water is treated as an upward flow by using a filter material made of a foamed plastic which has a particle size of 0.5 to 15 mm and a space ratio of about 60 to 80% as a carrier, and at the same time coagulation of the SS and immobilization of the eluting phosphorus And 0.5 to 5 mg / 1 of an inorganic flocculant is poured to purify the eutrophied raw water.