Anionic polyacrylamide (APAM) is a water-soluble polymer, mainly used for flocculation and sedimentation of various industrial wastewater, precipitation and clarification, such as iron and steel plant wastewater, electroplating plant wastewater, metallurgical wastewater, coal washing wastewater and other wastewater treatment, sludge dewatering and so on. It can also be used for clarification and purification of drinking water. Because of its molecular chain contains a certain number of polar groups, it can adsorb the suspended solid particles in water, make the bridge between particles or through the charge neutralization to make the particles coalesce to form large flocs, so it can accelerate the sedimentation of the particles in the suspension, and it has the effect of accelerating the clarification of the solution, and promoting the filtration, etc. It can also be used in clarification and purification of drinking water.
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