What is Poly Aluminum Chloride?

Poly Aluminum Chloride (PAC) is an inorganic polymer coagulant that has revolutionized water treatment processes worldwide. This high-efficacy coagulant and flocculant offers superior performance compared to traditional aluminum salts like alum, providing better turbidity removal, reduced sludge production, and wider pH adaptability.

Detailed Classification of PAC

1. By Basicity Level

Low-basicity PAC (30-50%): Suitable for specific industrial applications

Medium-basicity PAC (50-70%): Most commonly used in water treatment

High-basicity PAC (70-85%): Offers excellent coagulation with lower dosage

2. By Form

Liquid PAC: Ready-to-use solution for immediate application

Solid PAC: Powder or granular form for easy transportation and storage

3. By Application Grade

Industrial Grade: Contains slightly higher impurity levels, suitable for wastewater treatment

Drinking Water Grade: Ultra-pure formulation meeting international safety standards

Comprehensive Applications of PAC

Water Treatment Sector

Municipal Water Purification: Effectively removes suspended solids, organic matter, and microorganisms

Wastewater Treatment: Treats industrial and domestic wastewater to meet discharge standards

Swimming Pool Water Treatment: Maintains water clarity and hygiene

Industrial Applications

Paper Industry: Improves pulp drainage and paper quality

Textile Industry: Treats dyeing wastewater and removes color

Mining Industry: Separates minerals and treats tailings water

Oil Refining: Treats oily wastewater and facilitates oil-water separation

Technical Advantages of PAC

Enhanced Performance

Rapid Sedimentation: Forms dense flocs that settle quickly

Broad pH Range: Effective from pH 5.0 to 9.0 without adjustment

Low Temperature Adaptability: Maintains effectiveness in cold water conditions

Economic Benefits

Reduced Dosage: 30-50% lower dosage compared to traditional coagulants

Lower Sludge Production: Minimizes disposal costs

Reduced Alkali Consumption: Lower pH adjustment requirements

Mechanism of Action

Coagulation Process

Charge Neutralization: Positively charged PAC molecules neutralize negative charges on colloidal particles

Adsorption Bridging: Long polymer chains form bridges between particles

Sweep Flocculation: Aluminum hydroxide precipitates enmesh impurities during formation

Environmental Impact and Safety

Biodegradable: Breaks down into harmless components

Aluminum Residual: Lower residual aluminum levels compared to conventional coagulants

Safe Handling: Proper handling procedures minimize risks

Best Practices for PAC Application

Dosage Optimization

Jar Testing: Recommended to determine optimal dosage

Pilot Testing: Essential for large-scale applications

Continuous Monitoring: Adjust dosage based on water quality changes

Application Techniques

Direct Dosing: Adding PAC directly to water flow

Dilution Method: Pre-diluting for better distribution

Automatic Dosing Systems: For precise control and consistent results

Comparison with Traditional Coagulants

PAC outperforms traditional coagulants in:

Efficiency: Better turbidity and color removal

Cost-effectiveness: Lower overall treatment costs

Operational Simplicity: Easier handling and storage

Future Trends in PAC Technology

Nanotechnology Integration: Enhanced formulation for better performance

Smart Coagulants: Responsive to water quality changes

Green Manufacturing: Environmentally friendly production processes

Conclusion

Poly Aluminum Chloride stands as the premier choice for modern water treatment applications. Its exceptional performance as both a coagulant and flocculant, combined with economic and operational advantages, makes PAC indispensable for municipalities and industries seeking efficient water treatment solutions. As technology advances, PAC continues to evolve, offering even greater efficiency and environmental sustainability.

For expert guidance on selecting the right PAC product for your specific needs, contact our technical team today. We provide comprehensive support from product selection to application optimization, ensuring you achieve the best possible water treatment results.