Some treatment ranges corresponding to different types of polyacrylamide
Cationic polyacrylamide exhibits positive charge in both acidic and alkaline media. It typically has a lower molecular weight than anionic or nonionic polyacrylamide, and its performance in clarifying sewage is mainly achieved through charge neutralization. The primary function of this type of flocculant is to flocculate negatively charged particles, providing turbidity removal and decolorization capabilities. In wastewater treatment from alcohol plants, monosodium glutamate plants, sugar refineries, meat processing plants, beverage factories, printing and dyeing plants, etc., the use of cationic polyacrylamide yields several times or even tens of times higher efficiency than the use of anionic polyacrylamide, nonionic polyacrylamide, or inorganic salts, as these types of wastewater generally carry negative charges.
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