I. Introduction: Chinese name: the polyacrylamide English name: PAM implementation of standards: GB17514-2008 Specification: anionic cationic, non-ionic zwitterionic four models. The anionic polyacrylamide Profile 1, the field of application ( 1), industrial wastewater treatment. Especially on the pH value is neutral or alkaline, relatively large particles suspended in the water, at high concentrations, the positively charged sewage, such as steel mills, electroplating plants, metallurgical plants and coal preparation plant sewage treatment, the effect is very significant. (2) drinking water treatment. With the processing sediment, turbid water, Pharmacy with less, low cost, no secondary pollution. (3), paper additives. Can be used as long fiber paper dispersants, wet and dry enhancer, retention and drainage aids and papermaking wastewater flocculant.