Application of Cationic Polyacrylamide ZETAG 8147 DL

ZETAG 8147 DL is a high-efficiency cationic polyacrylamide (CPAM) emulsion flocculant designed for advanced solid–liquid separation, sludge dewatering, and wastewater clarification. Its formulation features high molecular weight and medium-to-high cationic charge density, providing excellent charge neutralization, strong polymer bridging, and rapid floc formation. The liquid emulsion format ensures fast dissolution, easy handling, and stable performance across a wide range of industrial and municipal water treatment systems. ZETAG 8147 DL has found extensive application in municipal wastewater treatment, industrial effluent clarification, papermaking, food and beverage processing, mining, and oilfield water treatment.

1. Municipal Wastewater Treatment

ZETAG 8147 DL is widely applied in municipal sewage treatment plants for clarification and sludge conditioning. Domestic wastewater typically contains negatively charged organic matter, fine suspended solids, colloidal particles, and microorganisms that settle poorly without chemical assistance. ZETAG 8147 DL efficiently neutralizes the surface charges of these particles and promotes aggregation through polymer bridging, forming large, dense flocs.

In primary and secondary clarifiers, ZETAG 8147 DL enhances:

• Total suspended solids (TSS) removal

• Reduction of turbidity

• Settling rate of clarifiers

• Effluent stability for downstream biological treatment

For sludge conditioning, ZETAG 8147 DL is added prior to belt filter presses, centrifuges, screw presses, and plate-and-frame filter presses. It destroys the hydration layer around sludge particles, enabling water release and forming shear-resistant flocs. This results in higher sludge cake dryness, reduced sludge volume, lower disposal costs, and improved operational efficiency of dewatering equipment.

2. Industrial Wastewater Treatment

ZETAG 8147 DL is extensively applied in treating industrial wastewater from textile and dyeing, chemical manufacturing, pharmaceutical production, electroplating, leather processing, metallurgical, and food processing industries. Industrial effluents often contain complex mixtures of dyes, surfactants, oils, fine solids, and heavy metals, which are difficult to remove without chemical flocculation.

Textile and Dyeing Industry

Textile wastewater contains reactive dyes, pigments, surfactants, and fine fibers. ZETAG 8147 DL rapidly binds anionic dyes and fiber fines, producing compact flocs that improve color removal and turbidity reduction. The treated effluent has improved transparency and reduced chemical oxygen demand (COD), which enhances the efficiency of downstream biological treatment systems.

Electroplating and Metal Processing

Electroplating effluents contain heavy metals such as copper, nickel, chromium, and zinc. After chemical precipitation, fine metal hydroxide particles are difficult to settle. ZETAG 8147 DL aggregates these particles into dense flocs, improving sedimentation, filtration performance, and ensuring compliance with strict environmental discharge standards.

Chemical and Pharmaceutical Industry

Chemical and pharmaceutical wastewater contains fine organic particles, emulsified matter, and colloidal impurities. ZETAG 8147 DL enhances solid–liquid separation efficiency, reduces toxicity and organic loading to biological treatment units, and stabilizes the overall wastewater treatment process.

3. Sludge Dewatering and Conditioning

Sludge dewatering is one of the most critical applications for ZETAG 8147 DL. Activated sludge and industrial mixed sludge contain large amounts of bound water held by negatively charged organic compounds. ZETAG 8147 DL works by:

• Neutralizing surface charges of sludge particles

• Breaking the hydration layer

• Forming dense, shear-resistant flocs

This results in:

• Faster filtration and centrifugation rates

• Higher dry solids content in sludge cake

• Lower polymer consumption per ton of dry sludge

• Increased capacity and efficiency of dewatering equipment

It performs effectively on a variety of sludge types, including activated sludge, biological sludge, oily sludge, and mixed industrial sludge.

4. Papermaking Industry

In the pulp and paper industry, ZETAG 8147 DL serves as a retention aid, drainage aid, and papermaking sludge dewatering agent. It enhances the retention of fine fibers and fillers, such as calcium carbonate and kaolin clay, improves drainage on the wire section, and contributes to stronger paper formation and uniformity. For papermaking sludge, it significantly improves dewatering efficiency, reduces energy consumption during drying, and lowers disposal costs.

5. Food and Beverage Industry

Wastewater from the brewery, dairy, sugar, starch, beverage, and meat processing industries contains high concentrations of suspended solids, fats, oils, proteins, and carbohydrates. ZETAG 8147 DL efficiently flocculates and separates these pollutants. In dissolved air flotation (DAF) systems, it is often used with inorganic coagulants such as polyaluminum chloride (PAC) or aluminum sulfate to improve bubble attachment, flotation efficiency, and scum removal.

6. Mining and Oilfield Applications

ZETAG 8147 DL is applied in mining tailings thickening, mineral slurry clarification, and oilfield produced water treatment. It promotes rapid settling of fine mineral particles, producing high-density underflow and clear overflow suitable for reuse. In oilfield wastewater, it efficiently removes suspended solids, clay particles, and emulsified oil, enabling water reuse and environmentally compliant discharge.

7. Key Advantages

ZETAG 8147 DL provides:

• High flocculation efficiency at low dosage

• Strong, compact, and fast-settling flocs

• Excellent sludge dewatering performance

• Wide adaptability across pH ranges and wastewater types

• Good compatibility with inorganic coagulants

• Reduced operating and sludge disposal costs

Conclusion

ZETAG 8147 DL is a versatile, high-performance cationic polyacrylamide flocculant with outstanding performance in municipal wastewater treatment, industrial effluent clarification, sludge dewatering, papermaking, food processing, mining, and oilfield water treatment. Its strong charge neutralization, high molecular weight structure, and rapid floc formation allow significant improvements in solid–liquid separation efficiency, reduced chemical consumption, and lower operating costs. As environmental regulations become more stringent and sustainable water management becomes critical, ZETAG 8147 DL remains a reliable and cost-effective solution for modern water and sludge treatment systems.