Cationic polyacrylamide (CPAM) is a water-soluble polymer polyelectrolyte, easily soluble in water, and insoluble in organic solvents such as ethanol and acetone. Its molecular chain has cationic groups and active adsorption groups. Through electrical neutralization and adsorption bridging, it reduces the zeta potential in water, destabilizes suspended particles and negatively charged water-soluble substances in the water, flocculates and forms larger Flocculant, the suspended matter is settled or floated up, so as to achieve the purpose of purifying water. It is suitable for wastewater treatment with high organic colloid content in industries such as dyeing, papermaking, food, construction, metallurgy, mineral processing, coal powder, oil field, aquatic product processing and fermentation.
Anionic polyacrylamide (APAM) is a copolymer of acrylamide and acrylate. It is a water-soluble linear polymer flocculant. It neutralizes the charge on the surface of suspended particles in water to promote particle flocculation, thereby destabilizing the particles in the water. The particles are adsorbed to each other under the bridging effect of the active gene of the polymer, and eventually form a larger floc. Mainly used for flocculation and sedimentation of various industrial wastewater, sedimentation and clarification treatment, such as wastewater treatment of steel plant wastewater, electroplating plant wastewater, metallurgical wastewater, coal washing wastewater, sludge dehydration, etc.
The molecular chain of non-ionic polyacrylamide products contains a certain amount of polar genes that can adsorb solid particles suspended in water, so that large flocs are formed between the particles. It accelerates the sedimentation of particles in suspension, has a very obvious effect of accelerating the clarification of the solution, and promotes filtration. It is widely used in the treatment of chemical industrial wastewater and waste liquid, and municipal sewage treatment. Especially when the sewage is weakly acidic, this product is more suitable.
Because zwitterionic polyacrylamide contains cationic groups and anionic groups in the molecule, it has the characteristics of general cationic flocculants and exhibits more excellent performance. This type of flocculant can be used in a wide range of PH values, with higher water filtration and lower cake water content, and can also be used for strong acid leaching of ores or recovery of valuable metals from metal-containing acid catalysts.
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With the development and application of selective flocculation process, polyacrylamide flocculant has been applied in t