Guolan New Materials (Shandong) Co., Ltd. is one of the leading manufacturers and suppliers of pac for wastewater treatment in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to wholesale bulk top-quality pac for wastewater treatment from our factory.
Products Description
Wastewater-grade liquid polyaluminium chloride (PAC, CAS: 1327-41-9) is specifically optimized for industrial and municipal wastewater treatment. Yellowish-brown liquid with Al₂O₃ ≥8.0%, basicity 20.0–98.0%, and density ≥1.12 g/cm³. As a liquid product, it dilutes directly into automatic dosing systems, eliminating dust and concentration fluctuations associated with solid dissolution.
Upon dosing, PAC rapidly hydrolyzes into polynuclear aluminum hydroxyl complexes that remove colloids, turbidity, color, and COD through three synergistic mechanisms: charge neutralization, bridging adsorption, and sweep flocculation. Compared to traditional monomolecular coagulants such as aluminum sulfate, PAC achieves higher removal efficiency with lower dosage and shorter retention time, producing denser, faster-settling flocs. The wastewater grade is specifically optimized for high-turbidity, high-color, high-COD wastewater, and performs even better when combined with PAM as flocculant aid.
Guolan New Materials produces wastewater-grade liquid PAC under our ISO 9001:2015-certified system, with additional testing for water-insoluble matter and heavy metals on every batch. We have deep expertise in municipal sewage, dyeing, papermaking, mining, and oilfield wastewater processes, and provide jar testing guidance, optimal dosage determination, and PAM compatibility recommendations. With 25,000 tons annual capacity, we support long-term stable supply for large-scale wastewater treatment projects.
Technical Specifications
|
Parameter |
Specification |
|
CAS Number |
1327-41-9 |
|
EINECS |
215-477-2 |
|
HS Code |
282732 |
|
Chemical Formula |
[Al₂(OH)ₙCl₆₋ₙ]ₘ |
|
Appearance |
Yellowish-brown liquid |
|
Al₂O₃ Mass Fraction, wt% |
≥8.0 |
|
Density (20°C), g/cm³ |
≥1.12 |
|
Basicity, % |
20.0–98.0 |
|
Water-Insoluble Matter, wt% |
≤0.4 |
|
pH (10 g/L aqueous solution) |
3.5–5.0 |
|
Iron (Fe), wt% |
≤1.5 |
|
Effective pH Range |
5.0–9.0 |
|
Executive Standard |
Q/GL 011-2024 |
Key Strengths
- Triple Flocculation Mechanism for High Efficiency - Three synergistic mechanisms work together: (1) Charge neutralization - positively charged polynuclear aluminum species neutralize negatively charged colloids (clay, organic matter, dyes) and destabilize them; (2) Adsorption bridging - hydrolyzed polymer chains adsorb multiple particles and bridge them into large, dense flocs; (3) Sweep flocculation - Al(OH)₃ precipitate enmeshes suspended particles during settling. Higher efficiency than traditional aluminum sulfate with lower dosage.
- Liquid Form for Automatic Dosing - Liquid form can be directly diluted and dosed continuously via metering pumps, eliminating dissolution tanks, mixers, and aging basins. Especially suited for fully automated dosing systems at wastewater treatment plants, reducing manual labor and dust issues.
- Wide Wastewater Applicability - Effective pH range of 5.0–9.0 provides good performance across municipal sewage, textile dyeing effluent, papermaking white water, mining tailings, and oilfield produced water. Can be combined with PAM to further improve settling speed and sludge dewatering performance.
- Low Insolubles Prevents Clogging - Water-insoluble matter ≤0.4% prevents clogging of dosing lines and nozzles during continuous operation. Suitable for 24/7 automatic dosing at wastewater plants, reducing equipment maintenance and cleaning frequency.
- Full Technical Support - Our technical team provides jar test guidance, optimal dosage determination, pH adjustment recommendations, and PAM compatibility solutions. We support customers from laboratory trials through full-scale commissioning of wastewater flocculation processes.
- Reliable Bulk Supply - With 25,000 tons annual capacity, we support long-term supply contracts for large municipal wastewater plants and industrial treatment projects. Domestic supply by bulk tank truck; export by FCL and LCL sea freight.
Key Applications
Municipal Sewage Treatment
Primary clarification and secondary effluent polishing at municipal wastewater treatment plants. Removes suspended solids, colloids, partial COD, and color. Combined with PAM, it enhances sludge settling and dewatering efficiency.
Textile Dyeing Wastewater
Color and COD removal pretreatment for dyeing effluent. PAC destabilizes dye colloids through charge neutralization, effectively reducing the load on subsequent biological treatment. Suitable for reactive, disperse, and other dye types.
Papermaking Effluent & White Water Recovery
Fiber recovery and white water closed-loop treatment in papermaking. Removes suspended solids, colloids, and pitch, improving white water reuse rates and reducing fresh water consumption.
Mining & Oilfield Effluent
Tailing water clarification in mining and oil-water separation in oilfield produced water. Removes suspended solids, oil, and heavy metals for water reinjection or discharge compliance. Combined with PAM, it significantly improves sludge dewatering efficiency.
FAQ
Q: Do you provide jar testing service for wastewater treatment?
A: Yes. Our technical team provides jar testing guidance and can recommend optimal PAC dosage, PAM dosage ratio, and pH adjustment based on your wastewater sample. Send us a water sample or your effluent quality data (COD, turbidity, color, pH), and we will propose a treatment recipe before you place a trial order.
Q: Can you support long-term supply contracts for wastewater plants?
A: Absolutely. With 25,000 tons annual capacity, we support long-term supply contracts for municipal wastewater treatment plants and industrial effluent systems. Domestic supply by bulk tank truck on scheduled delivery cycles; export by 200L drums, 1000L IBC totes, or full container loads.
Q: What industries have you supplied wastewater PAC to?
A: We have supplied liquid PAC to textile dyeing mills, papermaking plants, mining operations, oilfield produced water treatment, electroplating facilities, and municipal wastewater treatment plants. Our technical team has hands-on experience optimizing flocculation processes across diverse industrial wastewater types.
Q: What is the recommended PAC + PAM dosing sequence?
A: Dose PAC first during rapid mixing (30–60 seconds at high shear) to destabilize colloids and color particles, then add PAM during slow mixing (flocculation stage, 10–20 minutes at gentle agitation) to bridge small flocs into large, dense, rapidly settling flocs. This two-step sequence is critical for high-turbidity and high-color wastewater.
Q: How does it perform on dyeing wastewater color removal?
A: For reactive and disperse dye effluent, PAC effectively destabilizes dye colloids through charge neutralization, typically reducing color by 60–80% in the primary clarification stage. Combined with PAM and followed by biological treatment or activated carbon polishing, it helps meet discharge standards. Optimal dosage depends on dye type and concentration - jar testing is recommended.
Q: What is the typical dosage range for industrial wastewater?
A: Dilute 5–10 times before dosing. Municipal sewage: 20–60 mg/L; general industrial effluent: 50–200 mg/L; heavily polluted wastewater (high COD, high color): 200–500 mg/L. Always start with a jar test at your actual effluent quality, as dosage varies widely by industry, pollutant load, and desired effluent standard.
Why Choose Guolan New Materials?
- Optimized for High-Turbidity, High-Color Wastewater - Formulated for maximum charge neutralization and bridging efficiency on challenging effluent: textile dyeing, papermaking white water, mining tailings, and oilfield produced water. Produces dense, fast-settling flocs with shorter retention time than traditional aluminum sulfate.
- Liquid Form for 24/7 Automatic Dosing - No dissolving tank, no dust, no concentration fluctuation. Liquid PAC feeds directly from storage tank to metering pump, ideal for continuous automated dosing at 24/7 wastewater treatment plants. Low insoluble matter (≤0.4%) prevents dosing line and nozzle clogging.
- PAC + PAM Synergy Expertise - Our technical team specializes in optimizing the PAC coagulation + PAM flocculation two-step process. We help you tune dosage ratios, mixing speeds, and flocculation times to maximize solids removal, reduce sludge volume, and lower overall chemical cost per cubic meter of treated water.
- Cost-Effective Bulk Supply - 25,000-ton annual capacity and bulk tank truck domestic delivery lower per-unit chemical cost for high-consumption wastewater operations. We work with customers to align delivery schedules with production cycles, reducing inventory holding costs.
- Industry-Specific Technical Support - Deep experience across textile dyeing, papermaking, mining, oilfield, and municipal wastewater. We don't just sell chemicals - we help you solve specific effluent problems: color removal, COD reduction, sludge dewatering, and compliance with discharge standards.
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