Anionic polyacrylamide

Anionic polyacrylamide is mainly used for enhanced flocculation of sewage. It is characterized by high polymer electrolyte in neutral and alkaline media, sensitive to salt electrolyte, and can be cross-linked with high valence metal ions to form insoluble gel. It is mainly used for domestic production water, industrial and municipal sewage treatment, and can also be used for dehydration of inorganic sludge.

The three major application areas of anionic polyacrylamide are:

In the casting and metal manufacturing industries, it is used for purifying gas washing water for open hearth furnaces, clarifying wastewater from powder metallurgy and acid washing plants, purifying electrolytes, and clarifying electroplating waste liquids

In mining, it is used for coal washing water clarification and flotation tailings, fine coal filtration, tailings (slag) dewatering, flotation tailings clarification, concentrate thickening and filtration, potassium alkali hot melt and flotation processing fluid clarification, fluorite and barite flotation tailings clarification, raw salt water used for salt processing, sludge dewatering clarification, and phosphate mine recovery water treatment.

In urban and industrial wastewater treatment, it is used to improve the removal efficiency of suspended solids, BOD, and phosphate in wastewater. Adding 0.25mg/L hydrolyzed polyacrylamide to the primary wastewater sedimentation tank can increase the removal rates of suspended solids and BOD to 66% and 23%, respectively; Adding 0.3mg/L anionic polyacrylamide to the secondary wastewater treatment sedimentation tank can increase the removal rates of suspended solids and BOD to 87% and 91%, respectively, while the phosphorus removal efficiency increases from 35% to 91%. In the treatment of drinking water and domestic wastewater, it is used for surface clarification, clarification of flushing wastewater, and adjustment of filtrate.

Introduction to solubility of anionic polyacrylamide preparation:

1. For sewage sedimentation, it is recommended to mix a concentration of 0.1%

2. First, evenly sprinkle the powder into tap water and stir at a medium speed of 40-60 revolutions per minute to fully dissolve the polymer in the water before use.

3. During the experiment, 100ml of wastewater was taken, and 10% polyacrylamide solution was added with slow stirring. PAM solution was slowly added dropwise using a syringe, with 0.5ml each time. The appropriate dosage was determined based on the size of the generated alum flowers, the compactness of the flocs, the clarity of the supernatant, the settling rate, and the dosage.