Polyacrylamide is a polymer with strong adsorption and flocculation capabilities. In sewage treatment, polyacrylamide can remove pollutants such as suspended solids, organic matter, and heavy metals in sewage through adsorption and flocculation. At the same time, polyacrylamide can also adjust the pH value of sewage and improve the chemical stability of wastewater. How is polyacrylamide used in sewage?
1.Sludge dewatering.
During the sewage treatment process, a large amount of sludge is generated. In order to reduce the volume and weight of the sludge, dewatering treatment is required. Polyacrylamide can be used as a sludge dewatering agent, through adsorption and flocculation, the water in the sludge is separated to achieve the effect of dewatering. At the same time, polyacrylamide can also improve the sedimentation performance of sludge and facilitate subsequent sludge treatment.
2.Removal of heavy metals.
Heavy metals are one of the important pollutants in sewage, which are very harmful to the environment and human health. Polyacrylamide can remove heavy metal ions from wastewater through adsorption. At the same time, polyacrylamide can also form stable complexes with heavy metal ions, reducing the solubility of heavy metal ions and making them easier to remove.
3.Removal of organic matter.
Organics are another important pollutant in sewage. Polyacrylamide can remove organic matter from wastewater through adsorption and flocculation. At the same time, polyacrylamide can also adjust the pH value of sewage, improve the chemical stability of sewage, and facilitate the subsequent removal and treatment of organic matter.