polyaluminium chloride
Polyaluminium Chloride: The High-Performance Water Treatment Solution
Polyaluminium Chloride (PAC) is an advanced inorganic polymer coagulant widely used in water treatment processes. With its superior performance compared to traditional coagulants, PAC has become the preferred choice for drinking water purification, industrial wastewater treatment, and sewage treatment applications.
Product Advantages
- High purification efficiency with rapid flocculation
- Wider applicable pH range (5-9) than conventional coagulants
- Lower dosage requirements compared to aluminum sulfate
- Produces less sludge volume
- Minimal impact on water pH
- Excellent removal of turbidity, color, and organic matter
Technical Specifications
| Parameter | Standard | Premium Grade | Industrial Grade |
|---|---|---|---|
| Al2O3 content (%) | ≥28-30 | 30-31 | 28-29 |
| Basicity (%) | 45-90 | 70-85 | 45-65 |
| Density (20°C g/cm3) | ≥1.15 | 1.18-1.22 | 1.15-1.18 |
| pH (1% solution) | 3.5-5.0 | 3.8-4.5 | 3.5-5.0 |
| Insoluble matter (%) | ≤1.5 | ≤1.0 | ≤1.5 |
Application Guidelines
For optimal results with Polyaluminium Chloride:
- Determine water quality characteristics through jar tests
- Typical dosage ranges from 5-50 mg/L depending on water conditions
- Dilute PAC solution to 5-10% concentration before adding to treatment system
- Maintain proper mixing conditions (rapid mix for 1-3 minutes followed by slow mix)
- Adjust pH if necessary to achieve optimal coagulation (ideal range 6.5-7.5)
Polyaluminium Chloride FAQ
Q: What is the main difference between Polyaluminium Chloride and traditional aluminum sulfate?
A: Polyaluminium Chloride has a pre-polymerized structure that provides faster coagulation, better floc formation, and wider pH adaptability compared to aluminum sulfate. PAC produces denser flocs that settle faster and creates less residual aluminum in treated water.
Q: How should Polyaluminium Chloride be stored?
A: Polyaluminium Chloride should be stored in a cool, dry, and well-ventilated area away from incompatible materials. Liquid PAC should be kept in corrosion-resistant containers between 5-30°C. Solid PAC has excellent shelf life (2+ years) when properly sealed to prevent moisture absorption.
Q: Is Polyaluminium Chloride safe for drinking water treatment?
A: Yes, food-grade Polyaluminium Chloride meets strict international standards for drinking water treatment (including NSF/ANSI Standard 60 certification). It effectively removes contaminants while maintaining low residual aluminum levels well below regulatory limits (typically <0.1 mg/L).
Comparison with Other Coagulants
| Feature | PAC | Alum | Ferric Chloride |
|---|---|---|---|
| Optimal pH range | 5-9 | 6.5-7.5 | 3.5-6.0 |
| Dosage required | Low | High | Medium |
| Sludge production | Low | High | Medium |
| Corrosiveness | Low | Medium | High |
With over two decades of industry experience, we've refined our Polyaluminium Chloride manufacturing process to deliver consistent, high-performance products tailored to specific water treatment requirements. Our PAC solutions help clients achieve superior water quality while optimizing treatment costs.