For businesses involved in industrial water treatment, selecting the right coagulant is paramount. Polyaluminum Chloride (PAC) has emerged as a leading solution, offering superior efficiency and cost-effectiveness. As a dedicated manufacturer and supplier of PAC in China, we understand the critical needs of procurement managers and R&D scientists. This guide will help you understand what makes PAC a preferred choice and how to buy effectively.

What is Polyaluminum Chloride (PAC)?

Polyaluminum Chloride (PAC) is an inorganic polymer coagulant widely used in water purification. It works by neutralizing the negative charges of suspended particles in water, causing them to aggregate into larger flocs. These flocs then settle out of the water more easily, leading to clearer and cleaner water. Its efficiency makes it a preferred alternative to traditional coagulants like aluminum sulfate, offering lower dosage requirements and reduced sludge production.

Key Applications in Industry

PAC finds extensive application across various sectors:

  • Industrial Wastewater Treatment: This is perhaps PAC's most significant role. It is highly effective in treating effluents from industries such as coal washing, paper manufacturing, textiles, and metal processing. For coal washing wastewater, PAC helps remove high concentrations of suspended solids and fine coal particles, ensuring compliance with discharge regulations.
  • Drinking Water Purification: High-purity PAC is crucial for municipal drinking water treatment, effectively removing turbidity, color, and harmful microorganisms.
  • Paper Industry: PAC acts as a retention and drainage aid, improving paper quality and production efficiency.
  • Urban Sewage Treatment: It plays a vital role in clarifying municipal wastewater before discharge or reuse.

Why Choose PAC from a China Manufacturer?

When looking to buy Polyaluminum Chloride, partnering with a reputable manufacturer in China offers distinct advantages:

  • Cost-Effectiveness: Chinese manufacturers often provide competitive pricing, especially for bulk orders, making PAC an economically viable solution for large-scale operations.
  • Production Capacity: China boasts significant production capacity, ensuring a stable and reliable supply chain for industrial users.
  • Quality and Consistency: Leading manufacturers adhere to strict quality control standards (e.g., ISO certifications, GB standards) to deliver consistent product quality with specified Al2O3 content and low insoluble matter.

What to Look for When Buying PAC: Key Specifications

When sourcing PAC, pay close attention to these critical specifications:

  • Al2O3 Content: Typically ranges from 29% to 31%, indicating the concentration of active aluminum oxide. Higher content generally means higher efficiency.
  • Basicity: This refers to the degree of polymerization and is usually between 40-90%. Higher basicity often correlates with better performance.
  • Water-Insoluble Matter: A low percentage (e.g., <0.6%) is desirable for efficient dissolution and to prevent clogging of equipment.
  • Appearance: PAC is commonly available as a yellow or light yellow powder. White PAC, though more expensive, offers higher purity for sensitive applications like food processing or drinking water.

How to Source Effectively: Partnering with a Reliable Supplier

To ensure you purchase Polyaluminum Chloride that meets your needs, consider these steps:

  1. Identify Reputable Manufacturers/Suppliers: Look for suppliers with established production facilities, certifications (ISO, REACH, WQA), and positive customer testimonials. A strong supplier will provide detailed COAs (Certificates of Analysis) and MSDS (Material Safety Data Sheets).
  2. Request Samples: Always request samples to conduct your own jar tests and verify performance in your specific water conditions before placing a large order.
  3. Inquire About Pricing and Logistics: Get quotes for bulk purchases and clarify shipping terms, lead times, and packaging options (e.g., 25kg bags). Understanding the full cost, including freight, is crucial for budgeting.
  4. Consult Technical Support: Engage with the supplier's technical team to discuss your application and ensure you select the most appropriate PAC grade and dosage.

By understanding these factors, procurement managers and R&D scientists can confidently select and buy Polyaluminum Chloride from reliable China suppliers, ensuring efficient and cost-effective industrial water treatment.