20 million molecular weight anionic polyacrylamide for purification and flocculation of anionic PAM wastewater from manufacturers

Coagulants are usually added together with Aluminium chlorohydrate and polyacrylamide. The main principle of Aluminium chlorohydrate is electric neutralization to destabilize the colloid, and the main principle of polyacrylamide is adsorption bridging between particles. Generally, Aluminium chlorohydrate should be added to the mine water first, and then polyacrylamide should be added to destabilize the colloidal particles to a certain extent, creating favorable conditions for the flocculation of polyacrylamide; However, there are also special circumstances. If the turbidity of the effluent is high, polyacrylamide should be added first, and then Aluminium chlorohydrate should be added, so that polyacrylamide can play a full role in the high turbidity water first, adsorbing some colloidal particles to reduce the turbidity, and the remaining colloidal particles are destabilized by Aluminium chlorohydrate, and then absorbed by polyacrylamide, which can reduce the dosage of coagulant.

Adding chemical regulators (such as coagulants and coagulants) to sludge to coagulate and improve dewatering performance is currently the main method commonly used for sludge regulation. The coagulants used include inorganic coagulants and polymer electrolytes. The former is generally lime, ferric chloride, etc., while the latter includes organically synthesized polymer electrolytes (such as polyacrylamide, etc.) and inorganic polymer coagulants (such as polymeric Iron(III) sulfate, polyaluminum, etc.). Lime is usually used to adjust the pH value, and due to the formation of calcium carbonate from lime and bicarbonate in water, the particle structure of sludge is changed, the porosity of sludge is increased, and the filtration resistance is reduced. The dosage of chemical regulators can be calculated as a percentage (%) of the dry solid weight of sludge. The dosage of inorganic coagulants is about 7% to 20%, and the dosage of polymer electrolytes is below 1%.