... PH value is neutral or alkaline water, iron and steel plant waste water, waste water from electroplating factories, metallurgical wastewater, ... such as coal washing waste water sewage treatment , the best. Drinking water treatment: water plant in our country a lot ... more inorganic flocculants, organic pollution for the river water can be serious and I Inorganic Flocculant Cationic Polyacrylamide ...