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The use of cationic, anionic and nonionic polyacrylamide. Polyacrylamide (PAM) is a linear water soluble polymer, is a water-soluble polymer compounds used in wide varieties of one, PAM and its derivatives can be used as efficient flocculant, thickening agent, paper strengthening agent and liquid drag reduction agent, which is widely used in water treatment, paper, petroleum, coal, mining, metallurgy, geology, textile, construction and other industrial sectors.
4.polyacrylamide charge density (ionic degree): that mean the quantity that the polyacrylamide will be positive charge or negative charge to get the best flocculent result if the caseof minimum quantity. the charge density is related to the type of sludge, municipal sludge is often a function of the content of organic matter in the sludge,the
