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Polyacrylamide / The equivalent of ZETAG 8115 DL cationic polyacrylamide from Chinafloc
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ZETAG 8115 DL cationic polyacrylamide is a high-efficiency, water-soluble polymer flocculant designed for demanding solid–liquid separation applications. It is widely applied in municipal wastewater treatment, industrial effluent treatment, sludge thickening and dewatering, pulp and paper processing, food industry wastewater, and selected construction and slurry treatment systems. With its optimized cationic charge density and high molecular weight, ZETAG 8115 DL cationic polyacrylamide delivers reliable flocculation performance across a wide range of sludge types and operating conditions.
ZETAG 8115 DL cationic polyacrylamide is typically supplied as a dry granular or bead-type polymer with excellent solubility and stable solution properties. The product is engineered to provide rapid dispersion, consistent dissolution, and strong floc formation. Its moderate to medium-high cationic charge makes ZETAG 8115 DL particularly suitable for treating negatively charged organic solids and biological sludges commonly encountered in wastewater treatment processes.
The performance of ZETAG 8115 DL cationic polyacrylamide is based on a synergistic combination of charge neutralization and polymer bridging. Most suspended solids in wastewater and sludge systems—such as activated sludge flocs, microbial biomass, organic colloids, fibers, and fine particulates—carry a net negative surface charge.
When ZETAG 8115 DL is introduced, the positively charged polymer chains adsorb onto these particles, neutralizing surface charges and reducing electrostatic repulsion. At the same time, the long polymer chains extend into the surrounding water phase and link multiple particles together. This results in the formation of large, dense, and shear-resistant flocs that settle quickly and release water efficiently under gravity or mechanical pressure.
In municipal wastewater treatment plants, ZETAG 8115 DL cationic polyacrylamide is extensively used for:
Waste activated sludge (WAS) conditioning
Primary sludge thickening
Mixed sludge thickening and dewatering
Clarification of secondary effluent
In gravity thickeners and clarifiers, ZETAG 8115 DL promotes rapid floc growth and improved settling rates, producing clear supernatant and higher sludge underflow concentrations. When applied in mechanical dewatering equipment such as belt filter presses, decanter centrifuges, screw presses, and rotary drum thickeners, ZETAG 8115 DL increases cake dry solids content and improves filtrate clarity. These improvements directly reduce sludge volume, hauling costs, and disposal expenses.
ZETAG 8115 DL cationic polyacrylamide is widely applied in industrial wastewater treatment systems containing high concentrations of organic or mixed suspended solids. Typical industries include:
Food and beverage processing
Meat, poultry, and seafood processing
Dairy, starch, sugar, and fermentation industries
Textile dyeing and finishing operations
Chemical and pharmaceutical manufacturing
In these applications, ZETAG 8115 DL effectively aggregates fine organic solids and biological residues, enabling efficient separation by sedimentation, flotation, or mechanical dewatering. It is frequently used in conjunction with inorganic coagulants such as ferric chloride, aluminum sulfate, or polyaluminum chloride to optimize clarification efficiency and overall effluent quality.
One of the primary applications of ZETAG 8115 DL cationic polyacrylamide is sludge thickening and dewatering. The polymer is compatible with a wide range of equipment, including:
Gravity belt thickeners
Belt filter presses
Decanter centrifuges
Screw presses
Chamber and membrane filter presses
ZETAG 8115 DL forms strong, well-structured flocs that resist shear forces during mixing and dewatering. The enhanced floc structure promotes rapid water release, resulting in higher dry solids content, improved sludge cake stability, and clearer centrate or filtrate.
In the pulp and paper industry, ZETAG 8115 DL cationic polyacrylamide is used for biological sludge dewatering, fiber and fines recovery, and clarification of whitewater systems. Its cationic nature allows strong adsorption onto negatively charged cellulose fibers, fillers, and organic contaminants. This improves solids retention, reduces fiber loss, enhances water reuse, and supports stable paper machine operation while reducing the environmental impact of effluent discharge.
ZETAG 8115 DL cationic polyacrylamide is particularly effective for sludges with high organic content, which typically retain water strongly and are difficult to dewater. In food processing and fermentation wastewater treatment, ZETAG 8115 DL improves floc cohesion and drainage behavior, leading to better dewatering performance and reduced sludge disposal volumes.
In construction and civil engineering projects, ZETAG 8115 DL cationic polyacrylamide may be applied to treat drilling slurries, foundation slurries, and industrial process slurries containing fine, negatively charged particles. The polymer accelerates solids aggregation and settling, enabling clarified water reuse on site and minimizing environmental discharge.
ZETAG 8115 DL cationic polyacrylamide is compatible with most commonly used coagulants, pH adjustment chemicals, and other flocculants. It can be applied as a standalone product or as part of a dual-chemical treatment program. Optimal results depend on correct dosage, appropriate dosing point, sufficient mixing for dispersion, and avoidance of excessive shear that may damage formed flocs.
Typical dosage levels of ZETAG 8115 DL cationic polyacrylamide range from 0.5 to 8 g/m³, depending on sludge characteristics, solids concentration, and dewatering equipment. The polymer is normally prepared as a 0.05–0.3% aqueous solution using clean water. Adequate hydration time and gentle mixing are essential to ensure full polymer activation and consistent performance.
In summary, ZETAG 8115 DL cationic polyacrylamide is a versatile and reliable flocculant for municipal and industrial wastewater treatment, sludge thickening and dewatering, pulp and paper processing, food industry effluents, and construction slurry treatment. Through effective charge neutralization and polymer bridging, ZETAG 8115 DL cationic polyacrylamide forms large, dense, and shear-resistant flocs that significantly enhance settling, clarification, and water removal efficiency. Its proven performance, adaptability, and compatibility with diverse treatment systems make ZETAG 8115 DL cationic polyacrylamide a trusted solution for modern solid–liquid separation challenges.
