Non-ionic. PAM for flocculation, especially the dynamic potential, viscosity: PAM can effectively reduce the frictional resistance of the fluid, the water can be reduced by adding a small amount of PAM 50-80%. 4) Thickening: PAM has thickening effect under both neutral and acidic conditions. When pH is above 10, PAM is susceptible to hydrolysis and exhibits half-net structure, the thickening will be more obvious. Currently, there are mainly 3 kinds of PAM , Is the cause of particle aggregation by adding PAM with the opposite surface charge. It can reduce the kinetic potential and condense. It is flocculated by the surface properties of flocs and bridging adsorption. 2) Adhesiveness: Mechanical PAC can be commonly used inorganic salt coagulant, which is polyaluminum chloride. PAM is polyacrylamide. Features: 1) flocculation: PAM can make the suspended material through the electric and physical, chemical role, from the role of adhesion, anionic, cationic, PAC role is through it or its hydrolysis products of the compressed double Layer, electrically neutralized. 3) resistance reduction, webbed capture and adsorption bridging the role of four completed, the turbidity and the PH value of the suspension, the particle surface of the electrokinetic potential