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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 water treatment agent, uniquely formulated by combining Polyaluminum Chloride (PAC) with additional functional substances such as aluminum salts, iron salts, or organic flocculants. This innovative approach harnesses the synergistic effects of diverse components, effectively overcoming the limitations of traditional PAC, especially in tackling low-turbidity wastewater and addressing challenges in decolorization and heavy metal removal. The primary advantage of CPAC lies in its ability to deliver superior flocculation and multifunctional purification.
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While conventional PAC relies on electrical neutralization + adsorption bridging, CPAC is designed to confront multiple pollutants, including suspended solids, colloids, organic matter, and heavy metals in complex water environments. By incorporating secondary and tertiary components, such as iron salts, CPAC enhances its net capture capabilities, establishing itself as an upgraded flocculant solution in the water treatment sector. For those searching for reliable suppliers and manufacturers in China, our CPAC stands out as a premier choice, blending innovation with effectiveness for all your water treatment needs.
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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.
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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
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What is Compound Poly Aluminium Chloride (CPAC) and how does it differ from standard PAC?
CPAC is an advanced coagulant formulated by combining standard Poly Aluminium Chloride (PAC) with additional agents such as iron salts, activated carbon, 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 can simultaneously address turbidity, heavy metals, color, and organic pollutants through multi-effect synergy.
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What types of wastewater is CPAC most suitable for treating?
CPAC is suitable for a wide range of industrial and municipal wastewater, including high-turbidity wastewater (coal washing, mining), high-organic-load wastewater (printing and dyeing, food processing), heavy metal-containing wastewater (electroplating, chemical plants), papermaking and mining effluent, and municipal sewage requiring advanced treatment.
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How effective is CPAC at removing heavy metals such as Cr⁶⁺ and Cu²⁺?
When CPAC is compounded with sulfides (for complexing heavy metals) and iron salts (for netting and precipitation), it achieves a high heavy metal removal rate. This makes it particularly effective for electroplating wastewater containing Cr⁶⁺, Cu²⁺, and other toxic metal ions that standard PAC cannot adequately address.
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Does CPAC produce less sludge compared to standard PAC?
Yes. CPAC formulations that include composite components such as diatomite enhance the compactness of flocs during coagulation. This results in a sludge volume reduction of approximately 20%–30% compared to single PAC treatment, which directly lowers subsequent pressure filtration costs and overall operational expenses.
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How should CPAC be stored to maintain its effectiveness?
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 dry conditions with relative humidity not exceeding 60% to prevent moisture absorption and caking, which could affect its coagulation performance.
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Is water quality testing required before using CPAC, and why?
Yes, water quality testing is strongly recommended before use. Parameters such as pH, COD, and heavy metal content must be measured so that the CPAC formula can be precisely adjusted to match the wastewater characteristics. For example, acidic wastewater requires a higher proportion of iron salts in the formulation to ensure optimal coagulation and treatment efficiency.
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