Cationic Polyacrylamide (CPAM) is a linear high-molecular-weight compound, typically appearing as white granules or powder. It possesses several outstanding characteristics:
High charge density: It exhibits excellent flocculation performance on negatively charged colloids, rapidly adsorbing onto and neutralizing the surface charges of suspended particles, thereby forming large, dense flocs.
Superior dewatering capability: Widely used in sludge dewatering, CPAM effectively reduces sludge moisture content and significantly enhances dewatering efficiency.
Broad pH tolerance: It maintains consistent performance across a wide pH range, ensuring reliable operation under varying acidity or alkalinity conditions.
Strong stability: Its performance is highly stable and minimally affected by external factors.
CPAM is commonly employed in municipal wastewater treatment, industrial effluent processing, and solid-liquid separation applications in industries such as papermaking and food production, where it substantially improves overall treatment efficiency.
Product Introduction：
Cationic polyacrylamide (CPAM) is a water-soluble, linear high-molecular-weight organic polymer synthesized by copolymerizing cationic monomers with acrylamide monomers. It carries a positive charge and contains various reactive functional groups that can form hydrogen bonds through affinity and adsorption with numerous substances. CPAM primarily functions to flocculate negatively charged colloids and offers capabilities such as turbidity removal, decolorization, adsorption, and adhesion. Depending on its physical form, the product is available as either solid granules or emulsion, with solid granules being the most widely used form in the market today.
Product Advantages：
Excellent solubility: Highly water-soluble and fully dissolves even in cold water.
Highly efficient and cost-effective: Only a small amount of the product is required to achieve significant flocculation—typically just 0.01 to 10 ppm (0.01 to 10 g/m³)—to deliver optimal performance.
Excellent synergistic effect: When used in combination with inorganic flocculants (such as polyferric sulfate, polyaluminum chloride, iron salts, etc.), it demonstrates significantly enhanced performance.
Effective charge neutralization and rapid settling: Carrying a positive charge, it neutralizes negatively charged suspended particles, enabling them to settle quickly. During solid-liquid separation in wastewater treatment, it significantly enhances the settling rate of suspended solids.
High sludge dewatering efficiency: It significantly improves sludge dewatering performance and reduces the moisture content of the resulting filter cake. During dewatering, it forms large, robust flocs that do not adhere to filter cloths, remain intact during pressure filtration, and produce a relatively thick cake with a final moisture content below 80%.
Wide pH applicability: It performs effectively over a broad pH range (2–9) and is suitable for treating wastewater and sludge under weakly acidic conditions.
Service Industries：
Water treatment industry
Sludge dewatering: Suitable for dewatering municipal wastewater sludge, urban sewage sludge, paper mill sludge, and other industrial sludges. By selecting the appropriate product grade based on sludge characteristics, it effectively facilitates dewatering prior to pressure filtration.
Municipal and organic wastewater treatment: It demonstrates remarkable effectiveness in treating various high-organic-content wastewaters, including those from grain alcohol production, papermaking, municipal sewage treatment plants, breweries, monosodium glutamate (MSG) manufacturing, sugar refining, livestock feed processing, and textile dyeing and finishing industries. Its performance is several to dozens of times superior to that of anionic or nonionic polyacrylamide, as well as inorganic coagulants.
Drinking water treatment: Used as a flocculant for treating surface water (e.g., river or stream water) in municipal drinking water production, it requires a low dosage, delivers excellent results, and is cost-effective. Its performance is further enhanced when used in combination with inorganic flocculants.
Papermaking industry: It can be used as a dry-strength additive, retention aid, and drainage (filtration) aid, significantly improving paper quality, reducing costs, and enhancing the production capacity of paper mills. It is also effective in whitewater treatment and exhibits pronounced flocculation performance during the deinking process.
Textile dyeing industry: Used for decolorization and purification of dye solutions, significantly enhancing the treatment efficiency of dyeing wastewater.
Mineral processing industry: Used in ore flotation and concentrate dewatering to improve ore grade and recovery rate.
Oilfield industry: Used as an oilfield chemical additive, such as a clay anti-swelling agent and a thickening agent in acidizing treatments.
Other industries: It can also be used in food processing, construction, metallurgy, seafood processing and fermentation, kitchen waste treatment, and livestock farming (e.g., pig and cattle rearing).
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