Cationic Polyacrylamide Flocculant Anionic Nonionic Polymer For Wastewater Treatment​

Polyacrylamide is non-toxic, high in molecular weight and strong in water solubility. It can introduce various ionic groups and adjust the molecular weight to obtain specific properties. It has good adhesion to many solid surfaces and dissolved substances. Suspended particles are adsorbed and bridged to flocculate suspended particles for easy filtration and separation.

Anionic polyacrylamide is used as an additive in pulp in the paper industry, and has good retention and drainage effects. When the molecular weight is greater than 3.5 million, it has a particularly good effect on the dispersion of long fiber pulp. In addition, it can also be used as a water treatment agent. In the petroleum industry, it is used as oilfield mud treatment agent, thickener, sedimentation aid, etc. It is used as a coal washing additive in the coal industry.

Cationic polyacrylamide is cationic, so it has strong flocculation and adsorption effects on anionic substances such as cellulose. As a retention aid in the paper industry, it can increase the retention rate of fillers and fine fibers; as a filter aid, it can flocculate the pulp and accelerate the filtration of the wet paper layer in the wire part of the paper machine; as a neutral sizing precipitant, it can Instead of part of alum, rosin gum is precipitated and adsorbed between fibers at higher pH. It can also accelerate the sedimentation of fibers in white water and the flocculation of suspended solids in pulp wastewater, which can be used for wastewater treatment in paper mills.

Molecular weight refers to the length of the molecular chain in the molecule. The molecular weight of polyacrylamide is between 5 million and 18 million. Generally speaking, the higher the molecular weight of polyacrylamide products, the greater the viscosity. However, when using, and It is not a product with a higher molecular weight, the better the use effect. Specifically, in use, the appropriate molecular weight should be determined according to the actual application industry, water quality, treatment equipment and other conditions.

The dissolved concentration of polyacrylamide is 0.1-0.3%, and non-ferrous containers should be used. Use clear water below 60℃, while stirring, sprinkle the flocculant into the water slowly and evenly, so that the flocculant can be fully stirred in the container together with the water. It can be used after 60 minutes of continuous stirring time, and can be extended when the water temperature is too low. The stirring time and the linear speed of the stirring blade depend on the container.