Polyacrylamide models can be roughly divided into three: anionic, cationic, non-ionic. Anion is suitable for sewage flocculation, precipitation, precipitation, clarification, etc., can also be used for inorganic sludge dewatering. Cationic polyacrylamide is suitable for complex water flocculation, sedimentation, decolorization, clarification, municipal sludge dewatering, organic sludge dewatering, etc. Non-ionic polyacrylamide is suitable for soil water retention, weak acid s...