Polyacrylamide (PAM) is a water-soluble polymer, insoluble in most organic solvents, has good flocculation sex, can reduce the friction resistance between liquid, by ion characteristic points can be divided into non-ionic and anionic, cationic and amphoteric four types. Application of PAM in water treatment industry mainly includes the raw water treatment, wastewater treatment and industrial water treatment three aspects. In the raw water treatment, PAM and activated carbon, can be used to the life of suspended particles in water coagulation and clarification; In sewage treatment. PAM can be used for sludge dewatering; In industrial water treatment, PAM is mainly used for formula. In the raw water treatment, organic flocculants PAM instead of inorganic flocculants, even if they don't transform sedimentation pond, water purification ability also can increase more than 20%. ? industrial wastewater treatment