Anion polyacrylamide (APAM) is a water-soluble polymer polymer. Anion polyacrylamide is mainly used for flocculation settlement, precipitation and clarification treatment, such as wastewater from steel plant, electroplating plant wastewater, metallurgical wastewater, coal washing wastewater, sludge dehydration, drinking water clarification and purification treatment, etc.

Because anion polyacrylamide's molecular chain contains a certain number of polar groups, it can absorb the water suspended solid particles. Between the particle bridge or particles through charge neutralization, it can form a large flocculation, so it can accelerate the settlement of particles in the suspension, there is very obvious to accelerate the solution clarification, promote filtration and other effects.