Polyaluminium Chloride - China Polyaluminium Chloride Manufacturers Suppliers Factory

Product Overview

Polyaluminium Chloride (PAC) is an inorganic polymer coagulant ([Al2(OH)nCl6-n]m) engineered for colloidal destabilization, turbidity reduction, and suspended solids precipitation in aqueous systems. Unlike traditional coagulants such as aluminum sulfate (alum) or ferric chloride, PAC operates across a broader raw water pH range (5.0 to 9.0) and leaves lower residual dissolved aluminum concentrations in treated effluent.

Ecolink manufactures solid (spray-dried powder) and liquid PAC grades tailored for municipal potable water treatment, industrial wastewater clarification, and paper manufacturing. Production utilizes high-purity aluminum hydroxide feedstocks via controlled catalytic polymerization, ensuring low heavy metal profiles and dependable coagulation kinetics.

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Product Specifications

Solid PAC (Spray-Dried Powder)

Parameter / Specification	Target Value / Limit
Appearance	Golden yellow or white fine powder
Alumina (Al2O3) Content	>= 30%
Basicity	45% - 85%
pH (1% Aqueous Solution)	3.5 - 5.0
Water-Insoluble Matter	<= 0.3%
Iron (Fe) Content	<= 0.5% (Yellow grade) / <= 0.05% (White grade)
Heavy Metals (as Pb)	<= 0.001%

Liquid PAC

Parameter / Specification	Target Value / Limit
Appearance	Amber to clear yellow liquid
Alumina (Al2O3) Content	10% - 17%
Basicity	40% - 85%
pH (20 deg C)	0.5 - 2.0
Density (20 deg C, g/cm3)	>= 1.20

Key Features

Rapid Flocculation Kinetics:

Pre-polymerized aluminum chains bridge suspended particles instantly, accelerating settling velocity by 30% to 50% compared to standard aluminum sulfate.

Wide pH Operability:

Maintains strong coagulation performance at raw water pH levels between 5.0 and 9.0, reducing the need for secondary pH adjustment chemicals.

Low Residual Metal Ions:

Controlled reaction parameters limit residual dissolved aluminum concentrations in finished municipal drinking water.

Dense Sludge Formation:

Produces compact, lower-volume flocs, reducing downstream mechanical dewatering and sludge disposal expenditures.

Low Insoluble Residue:

Spray-drying manufacturing technology minimizes filter-clogging impurities (<= 0.3%), protecting diaphragm and peristaltic dosing pumps from premature wear.

Applications

Application Sector	Function / Objective	Recommended Grade
Municipal Drinking Water	Removal of turbidity, natural organic matter (NOM), and colloidal particles.	White PAC (Al2O3 >= 30%, Low Fe)
Industrial Wastewater	Treatment of effluent from pulp & paper mills, textile dyeing, and electroplating plants.	Yellow PAC (Al2O3 28% - 30%)
Sludge Conditioning	Enhancing capillary suction time (CST) and mechanical dewatering efficiency in belt presses or centrifuges.	Liquid PAC / Solid PAC
Paper Manufacturing	Internal sizing agent and drainage retention aid to improve paper sheet formation and wet strength.	Solid PAC (High Basicity)

Product Selection Guide

Selecting the appropriate PAC grade requires evaluating raw water chemistry and treatment objectives:

Determine Purity Requirements:

Choose White PAC (Low Iron) for municipal drinking water treatment, cosmetics, or high-purity industrial processes where iron staining or heavy metal accumulation must be strictly avoided.

Choose Yellow PAC for heavy industrial wastewater treatment and general municipal effluent clarification where cost-efficiency is prioritized.

Evaluate Delivery Form:Solid Powder (25 kg bags / Big bags): Ideal for long-distance transport, low-frequency replenishment, or facilities with dedicated dilution and makeup tank systems.

Jar Testing: Contact our technical team to receive representative sample kits (1 kg) for onsite jar testing to determine optimal dosage rates (mg/L) and basicity parameters for your specific raw water matrix.

Manufacturing & Quality Control

Production Process
Ecolink manufactures PAC via a reaction-controlled catalytic synthesis method using aluminum hydroxide powder and hydrochloric acid. The synthesis takes place in glass-lined reaction vessels under automated temperature and pressure monitoring to maintain consistent basicity (45% to 85%). Solid grades are processed through an industrial spray-drying tower to ensure uniform particle size distribution and immediate cold-water solubility.

Quality Control Protocol
• In-Process Testing: Automated titration monitors basicity and alumina concentration at three-hour intervals during synthesis.
• Batch Release Testing: Every production lot undergoes third-party traceable testing for water-insoluble matter, heavy metal content (As, Pb, Cd, Cr), and pH.
• Retention Samples: Retained samples from every batch are archived for 24 months to ensure full traceability and lot consistency.
• Certifications: ISO 9001:2015 quality management system; NSF/ANSI Standard 60 certification for drinking water treatment chemicals.

Packaging & Supply Capacity

Packaging Options:
• Solid Powder: 25 kg polyethylene-lined woven bags; 1,000 kg jumbo/bulk bags (palletized and shrink-wrapped for marine transport).
• Liquid Solution: 1,350 kg IBC totes; bulk tanker trucks; 20-foot ISO containers.
• Supply Capacity: Annual production capacity of 120,000 metric tons. Maintained safety stock of 5,000 metric tons at regional distribution hubs ensures uninterrupted contract fulfillment.

Why Choose Ecolink

Direct Manufacturer Pricing:

Eliminates intermediary trader markups through direct mill-to-plant supply chain integration.

Batch Consistency:

Advanced automated reactor control limits Al2O3 variance to within plus or minus 0.2%, ensuring stable coagulant dosing performance.

Regulatory Compliance:

Full documentation packages provided, including REACH dossiers, Certificate of Analysis (COA), Safety Data Sheets (SDS), and NSF compliance certificates.

Logistics Expertise:

Hazardous and chemical shipping compliance supported by dedicated export coordinators experienced in container stuffing, port customs clearance, and modal transport optimization.

Frequently Asked Questions

Q: How does the basicity percentage of PAC affect water treatment performance?

A: Basicity measures the degree of neutralization of aluminum ions, typically ranging from 45% to 85%. Higher basicity grades (70% to 85%) contain pre-formed polymers that generate larger flocs faster, making them effective in cold or low-turbidity water. Lower basicity grades (45% to 55%) deliver a higher cationic charge density, which is advantageous for neutralizing stable colloidal suspensions in high-turbidity industrial wastewater.

Q: What is the shelf life of solid PAC powder, and how should it be stored?

A: Solid spray-dried PAC has a shelf life of 12 to 24 months when stored in unopened, original packaging. Because PAC is hygroscopic, it must be stored in a cool, dry, well-ventilated indoor warehouse away from moisture and direct sunlight. Pallets should be kept off concrete floors using wooden pallets.

Q: Can solid PAC powder be dissolved directly into the main water stream?

A: No. Solid PAC must be pre-dissolved in a dedicated makeup tank to create a clear aqueous solution (typically 5% to 10% concentration) before dosing. Direct addition of solid powder to process lines causes incomplete dissolution, clogged piping, and localized overdosing. Makeup water temperature should be maintained between 15 deg C and 30 deg C to ensure rapid dispersion.

Q: What equipment materials are compatible with liquid and dissolved PAC solutions?

A: Due to the acidic nature of PAC solutions (pH 0.5 to 5.0), material selection is critical. Compatible materials include PVC, CPVC, fiberglass-reinforced plastic (FRP), polyethylene (HDPE/LDPE), and rubber-lined steel. Avoid carbon steel, copper, brass, and standard 304 stainless steel, as they will experience severe corrosion upon contact.

Request a Quote

Ready to optimize your water treatment process or secure reliable annual supply contracts? Submit your specifications below to receive a competitive commercial quote and technical data package within 24 hours.
Required Information for Fast Quote:
• Grade Required (Solid Powder / Liquid, White / Yellow)
• Annual Volume / Order Quantity
• Destination Port or Delivery Address
• Target Application (Municipal Potable / Industrial Wastewater)
• Request Technical Quote & Free Sample Kit

Shandong Ecolink Technology Co., Ltd. is one of the most reliable polyaluminium chloride manufacturers and suppliers in China. We warmly welcome you to wholesale bulk high quality polyaluminium chloride from our factory. If you have any enquiry about cooperation, please feel free to email us.