| 摘要 |
PURPOSE: A sewage water treating method for river water is provided to supply economical and environmental river water without spending money for large scale building lands. CONSTITUTION: A sewage water treating method for river water comprises the following steps. Inorganic cohesion chemicals are put into sewage water to remove scum. Contaminants with a large ratio are precipitated using an inclination plate whose both ends are bent downward. The water to be treated is put into a biological reaction tank to remove an organic material and nutriments. The water to be treated is put into an electrolysis sterilization tank with an anode and a cathode to sterilize the water by flowing a current through the water. The amount of aeration is reduced by 50% at night to lower an F/M ratio and water to be treated successively increases in the morning to keep microorganisms. |
