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China CPAC Suppliers - Advanced Composite Poly Aluminum Chloride Factory for Multifunctional Water Treatment
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China CPAC Suppliers - Advanced Composite Poly Aluminum Chloride Factory for Multifunctional Water Treatment
Composite Polyaluminum Chloride (CPAC) is an advanced multifunctional water treatment agent produced by leading suppliers in China. This innovative solution combines Polyaluminum Chloride (PAC) with additional functional substances, such as aluminum salts, iron salts, or organic flocculants. The primary advantage of CPAC lies in its ability to harness the synergy effect of these components, enabling effective flocculation and multifunctional purification that traditional PAC cannot achieve alone. Traditional PAC relies on electrical neutralization + adsorption bridging, but CPAC addresses a variety of complex pollution challenges, including suspended solids, colloids, organic matter, and heavy metals. By incorporating second and third components, such as iron salts that enhance net capture capability, CPAC is recognized as an upgraded flocculant. As a trusted product from a reputable factory, CPAC is the ideal choice for efficient water treatment solutions in diverse applications.
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.
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).
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
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
Q
What is Compound Poly Aluminium Chloride (CPAC) and how does it differ from standard PAC?
A:
CPAC is an enhanced coagulant formulated by combining standard Poly Aluminium Chloride (PAC) with additional agents such as iron salts, activated carbon, diatomite, or polyacrylamide. Unlike single PAC — which works optimally within a pH range of 6-9 — CPAC extends the effective pH range to 4-11 and offers improved performance for decolorization, heavy metal removal, and sludge reduction across a wider range of industrial wastewater types.
Q
What types of wastewater is CPAC most suitable for treating?
A:
CPAC is suitable for a broad range of industrial and municipal wastewater scenarios, including: high-turbidity wastewater (coal washing, mining), high-organic wastewater (printing and dyeing, food processing), heavy metal-containing wastewater (electroplating, chemical plants), papermaking and mining wastewater recycling, and advanced treatment of municipal sewage.
Q
How effective is CPAC at removing heavy metals from electroplating wastewater?
A:
When compounded with sodium sulfide (for complexing heavy metals such as Cr⁶⁺ and Cu²⁺) and iron salts (for netting and precipitation), CPAC achieves a high heavy metal removal rate from electroplating and chemical wastewater. The modular compounding design allows the formula to be tailored to specific heavy metal concentrations and types present in the wastewater.
Q
Does CPAC help reduce sludge production compared to standard PAC?
A:
Yes. Composite components such as diatomite in CPAC enhance the compactness of flocs during the coagulation process. This results in a sludge volume reduction of 20%-30% compared to single PAC treatment, which directly lowers the cost and effort associated with subsequent pressure filtration and sludge disposal.
Q
What should be done before using CPAC in a wastewater treatment system?
A:
Prior to application, it is essential to conduct thorough water quality testing to measure the pH level, COD concentration, and heavy metal content of the wastewater. Based on these results, the CPAC formula should be adjusted accordingly — for example, acidic wastewater (low pH) requires a higher proportion of iron salts in the compound to achieve optimal treatment performance.
Q
What are the correct storage conditions for CPAC, and what is its shelf life?
A:
Liquid CPAC should be stored in a sealed container 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 stacked packaging in a dry location where humidity does not exceed 60%, to prevent moisture absorption which can affect product quality and performance.
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