China CPAC Suppliers: Multifunctional Composite Polyaluminum Chloride Factory for Advanced Water Treatment Solutions

Composite Polyaluminum Chloride (CPAC) is an advanced multifunctional water treatment agent developed by combining various functional substances, such as aluminum salts, iron salts, and organic flocculants, with Polyaluminum Chloride (PAC). This innovative solution harnesses the synergy effect of its diverse components to overcome the limitations of traditional PAC, which often struggles with low-turbidity wastewater and does not effectively address decolorization and heavy metals simultaneously. CPAC is designed to achieve efficient flocculation and multifunctional purification for various water quality issues.
Unlike conventional PAC, which primarily relies on electrical neutralization + adsorption bridging, CPAC incorporates secondary and tertiary components—like iron salts—to enhance its ability to capture pollutants. This makes it a superior choice for tackling complex water pollution problems, including suspended solids, colloids, organic matter, and heavy metals. As a leading **water treatment solution from China**, our CPAC is manufactured in our state-of-the-art factory, positioning us as top **suppliers** in the industry.

Product Description

Core Features

1. Multi-effect synergy to address the "shortcomings" of single PAC

  • Complete the pH adaptation range: The optimal pH for single PAC is 6-9, while CPAC can extend the applicable pH to 4-11 by adding iron salts (such as polyferric sulfate) or organic bases (such as polyacrylamide), adapting to highly acidic (such as mine wastewater) or highly alkaline (such as papermaking black liquor) scenarios;
  • Enhanced Decolorization/Heavy Metal Removal: For printing and dyeing wastewater (containing dye pigments) or electroplating wastewater (containing Cr6+, Cu2+), CPAC can be compounded with activated carbon (adsorbing pigments) or sulfides (complexing heavy metals), with a high heavy metal removal rate;
  • Reduce sludge production: Composite components (such as diatomite) can enhance the compactness of flocs, with the sludge volume reduced by 20%-30% compared to single PAC, thereby reducing the subsequent pressure filtration cost.
Compound Poly Aluminium Chloride (4)

2. Adapt to complex water quality, covering over 90% of industrial scenarios

Through "Modularization compounding" design, CPAC can flexibly adjust the formula according to different wastewater characteristics, for example:

  • High turbidity wastewater (such as coal washing and mining wastewater): Compound high polymerization degree PAC (Al₂O₃ ≥ 15%) + diatomite (enhanced filtration), turbidity removal rate ≥ 98%;
  • High organic wastewater (such as printing and dyeing, food processing wastewater): Compound activated carbon (adsorbing COD) + polyacrylamide (coagulant aid), with a COD removal rate ≥ 50%;
  • Heavy metal-containing wastewater (such as electroplating and chemical wastewater): compounded sodium sulfide (complexing heavy metals) + iron salt (netting and precipitation).
Compound Poly Aluminium Chloride (5)
Applicable Scenarios
Advanced Treatment of Municipal Sewage
Decolorization and COD Reduction of Printing and Dyeing Wastewater
Removal of Heavy Metals from Electroplating Wastewater
Recycling of Papermaking / Mining Wastewater
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application (5)
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Precautions for Use
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Water quality testing first: Before use, it is necessary to test the pH, COD, and heavy metal content of wastewater, and adjust the CPAC formula based on the data (for example, acidic wastewater requires an increase in the proportion of iron salts).
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Storage Conditions: Liquid type should be stored sealed in a cool place (temperature ≤ 30°C), solid type should be stacked to prevent moisture (humidity ≤ 60%), and the shelf life of the liquid type is 12 months.
Frequently Asked Questions
What is Compound Poly Aluminium Chloride (CPAC) and how does it differ from standard PAC?
CPAC is an enhanced coagulant formulated by combining standard Poly Aluminium Chloride (PAC) with additional components such as iron salts, activated carbon, diatomite, or polyacrylamide. Unlike single PAC, which works optimally in a pH range of 6–9, CPAC can be engineered to treat wastewater across a much broader pH range of 4–11, making it suitable for highly acidic or highly alkaline industrial effluents.
What types of wastewater is CPAC most effective for?
CPAC is highly effective for a wide range of industrial and municipal wastewater types, including high-turbidity wastewater (coal washing, mining), high-organic-load wastewater (printing and dyeing, food processing), heavy metal-containing wastewater (electroplating, chemical plants), papermaking black liquor, and municipal sewage requiring advanced treatment.
How does CPAC help reduce sludge production compared to single PAC?
Composite components such as diatomite in CPAC enhance the compactness and density of flocs formed during coagulation. This results in a sludge volume reduction of approximately 20%–30% compared to using single PAC alone, which significantly lowers the cost and effort required for subsequent pressure filtration and sludge disposal.
What should be checked before using CPAC in a wastewater treatment system?
Before applying CPAC, it is essential to conduct a comprehensive water quality analysis of the wastewater, including measurement of pH levels, COD (Chemical Oxygen Demand), and heavy metal concentrations. These data points are used to select and adjust the appropriate CPAC formula — for example, acidic wastewater may require a higher proportion of iron salts in the compound.
What are the correct storage conditions for CPAC products?
Liquid CPAC should be stored in sealed containers in a cool environment with a temperature not exceeding 30°C, and has a shelf life of 12 months. Solid CPAC should be stored in dry conditions with relative humidity not exceeding 60% to prevent moisture absorption and caking, which could affect its performance.
Can CPAC achieve high removal rates for heavy metals and COD simultaneously?
Yes. Through its modular compounding design, CPAC can be tailored to simultaneously address multiple contaminants. For heavy metal-containing wastewater, compounding with sodium sulfide and iron salts enables effective complexing and precipitation of metals such as Cr⁶⁺ and Cu²⁺. For high-organic wastewater, adding activated carbon and polyacrylamide can achieve a COD removal rate of 50% or higher in a single treatment step.

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