Even without modifying the sedimentation tank, water purification capacity can be increased by more than 20%. Therefore, at present, many large and medium-sized cities use PAM as a supplement when their water supply is poor or their water quality is poor. Iron salts are high and polyacrylamide is added to aid coagulation when it is very difficult. Under normal circumstances, the main drug concentration of 10%. In sewage treatment, the use of PAM can increase the reuse rate of water recycling, polyacrylamide concentration of 1 ‰. Polyacrylamide is PAM PAM in the water treatment industry applications include raw water treatment, and the treated water PH value and alkalinity decreased slightly, sewage treatment and industrial water treatment three aspects. The main agent in the raw water treatment is polyaluminum chloride. PAM can be used for sludge dewatering; in industrial water treatment, it is mainly used as a prescription medicament. PAM can be used together with activated carbon to coagulate and clarify suspended particles in domestic water. In sewage treatment, In the raw water treatment, with organic flocculant PAM instead of inorganic flocculants, to adapt to a wide range of water. Easy to quickly form a large alum, precipitation performance. Suitable PH value range (5-9). Low water temperature, can still maintain a stable precipitation effect. Alkalinity than other aluminum salts. Aluminum chloride wide range of applications