Poly Aluminium Chloride (PAC)
Manufacturer & Supplier
High-performance inorganic polymer coagulant designed to accelerate floc formation and reduce sludge volume in municipal drinking water, industrial wastewater, and paper mill effluent.
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Powder & Liquid Formulations (Al₂O₃ Content 10%-31%)
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Drinking Water Grade & Industrial Grade Available
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Maintains Flocculation Efficiency in 5°C-30°C Water Temps
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Stable Export Supply to 50+ Countries
Product Overview
Molecular Formula
[Al₂(OH)nCl₆−n]m
Appearance
Yellow / White / Brown Powder
Standard Packaging
25kg PP Bags / 1000kg Jumbo
MOQ & Supply
1 Ton MOQ / Bulk Export Ready
Raw Water → PAC Dosing → Rapid Flocculation → Clear Effluent
What is Poly Aluminium Chloride?
Poly Aluminium Chloride (PAC) is a highly efficient, pre-polymerized inorganic coagulant. Unlike basic aluminum sulfate which requires alkalinity in the water to form flocs, PAC contains highly charged polymeric aluminum species that neutralize colloidal charges instantly upon dosing.
This chemical structure allows plant operators to achieve target turbidity levels (< 0.5 NTU for drinking water) with significantly lower chemical dosages.
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Faster Floc Formation Forms dense, fast-settling flocs within 3-5 minutes, reducing clarifier retention time.
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Wider pH Adaptability Maintains high coagulation efficiency across a pH range of 5.0 to 9.0 without requiring excessive pH adjustment chemicals.
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Lower Sludge Generation Reduces sludge volume by up to 30% compared to traditional alum, lowering disposal costs.
Poly Aluminium Chloride Product Types
We manufacture specific PAC grades tailored to the purity requirements and budget constraints of different treatment scenarios.
White PAC (High Purity)
- • Al₂O₃ Content: ≥ 29.5%
- • Water Insoluble: ≤ 0.1%
- • Spray dried manufacturing process
- • Free from heavy metals (Food/Pharma grade)
Yellow PAC (Standard)
- • Al₂O₃ Content: 28% - 30%
- • Basicity: 40% - 90%
- • Roller dried or spray dried options
- • Excellent cost-to-performance ratio
Brown PAC (Industrial)
- • Al₂O₃ Content: 26% - 28%
- • Water Insoluble: ≤ 1.5%
- • Roller dried manufacturing
- • High iron content aids in rapid settling
Poly Aluminium Chloride Specifications
| Technical Item | White PAC (Drinking Grade) | Yellow PAC (Standard Grade) | Brown PAC (Industrial Grade) |
|---|---|---|---|
| Al₂O₃ Content (%) | ≥ 29.5 | 28.0 - 30.0 | 26.0 - 28.0 |
| Basicity (%) | 40.0 - 90.0 | 40.0 - 90.0 | 40.0 - 90.0 |
| pH Value (1% water solution) | 3.5 - 5.0 | 3.5 - 5.0 | 3.5 - 5.0 |
| Water Insoluble Matter (%) | ≤ 0.1 | ≤ 1.0 | ≤ 1.5 |
| Appearance | Milky White Powder | Light Yellow / Yellow Powder | Brown / Dark Yellow Powder |
Facing Water Treatment Challenges?
Common Operational Issues
- ✕ Slow sedimentation in low-temperature winter water, causing clarifier bottlenecks.
- ✕ High sludge production from traditional coagulants, increasing filter press and disposal costs.
- ✕ Narrow pH range requires continuous dosing of caustic soda or lime to maintain coagulation.
- ✕ Poor water clarity and residual aluminum exceeding regulatory limits.
Changs Chemical PAC Solutions
- ✓ Rapid flocculation accelerates settling velocity, increasing plant throughput without infrastructure upgrades.
- ✓ Reduced sludge volume by forming compact, dense flocs with lower water retention.
- ✓ Wide pH adaptability (5.0-9.0) eliminates or drastically reduces the need for pH adjustment chemicals.
- ✓ Lower chemical dosage required compared to Alum, lowering overall operational expenditure (OPEX).
Poly Aluminium Chloride Applications
Formulated to meet specific purity and performance requirements across diverse industrial sectors.
Drinking Water Treatment
White PAC effectively removes turbidity, algae, and color while keeping residual aluminum below 0.2mg/L.
View SolutionMunicipal Wastewater
Yellow PAC rapidly reduces COD, BOD, and suspended solids (SS) in primary sedimentation tanks.
View SolutionIndustrial Circulating Water
Prevents scale and sludge buildup in cooling towers and heat exchangers.
View SolutionPaper Industry
Acts as a sizing precipitant and retention aid, improving paper strength and reducing machine downtime.
View SolutionTextile & Dyeing
Highly effective in decolorizing dyeing wastewater and breaking down complex organic compounds.
View SolutionMining & Coal Washing
Brown PAC accelerates the separation of coal powder and water, allowing for efficient water recycling.
View SolutionWhy Choose Weifang Changs Chemical
Direct manufacturer sourcing guarantees stable batch-to-batch consistency and protects your project margins.
PAC vs Aluminum Sulphate
While Aluminum Sulphate (Alum) has been a traditional standard, plant operators are increasingly migrating to Poly Aluminium Chloride. Because PAC is pre-polymerized, it bypasses the initial hydrolysis step required by Alum, resulting in immediate charge neutralization.
Conclusion: PAC generally provides higher treatment efficiency and lower overall operating costs (OPEX) due to reduced dosage and sludge management savings.
👉 Learn More About Aluminum Sulphate| Comparison Factors | Poly Aluminium Chloride (PAC) | Aluminum Sulphate (Alum) |
|---|---|---|
| Flocculation Speed | Faster (3-5 mins) | Slower (10-15 mins) |
| Chemical Dosage | Lower (approx. 30-50% less) | Higher |
| Optimal pH Range | Wider (5.0 - 9.0) | Narrow (5.5 - 7.5) |
| Sludge Volume | Lower (dense flocs) | Higher (fluffy, high water content) |
| Alkalinity Consumption | Low (rarely needs lime) | High (often requires alkalinity addition) |
Strict Quality Assurance
As a chemical supplier to municipal water plants, we understand that out-of-spec coagulants can lead to regulatory fines and plant shutdowns. Every 25MT batch is sampled and tested before container loading.
- Raw Material Inspection: Bauxite and hydrochloric acid purity verification.
- Production Monitoring: Automated temperature and polymerization tracking.
- Batch Testing: Al₂O₃, basicity, and heavy metal limits verified via spectrometry.
- Third-party Inspection: SGS or BV testing available upon buyer request.
Packaging & Shipping Parameters
25kg Standard Bag
Double-layer packaging: Inner PE liner with outer PP woven bag to prevent moisture absorption during transit.
1000kg Jumbo Bag
FIBC bags with discharge spouts, ideal for automated dosing silos in large municipal plants.
Container Loading
20-25 MT per 20ft FCL depending on palletization requirements. Shrink-wrapped pallets available.
Frequently Asked Questions
What is Poly Aluminium Chloride used for?
What Al₂O₃ content should I choose?
Is PAC suitable for drinking water?
How much PAC should be added? (Dosage)
Can I get free samples before placing a bulk order?
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