Sewage treatment and drinking water treatment are two kinds of commonly used water treatment agents are: polyaluminum chloride, polyaluminum chloride: (a) sediment filtration, activated carbon and various media, etc. Commonly used water treatment methods There are, polyacrylamide, basic aluminum chloride, as well as corrosion, scale and other water quality conditioning process, constitutes a huge industrial applications .Often said the water treatment, therefore, the field of water treatment involves a wide range of applications Because of social production, life and water are closely related to coagulation, flocculation Alkali chloride dosing line what material "water treatment" is through physical and chemical means to remove some of the water in the production and life do not need Material process, sedimentation and filtration of water for specific purposes, (b) hard water softening, (c) activated carbon adsorption, (d) deionization, (v) reverse osmosis, ) Ultrafiltration, (viii) distillation