Polyaluminium Chloride (PAC) is not a one-size-fits-all solution. Different water sources and treatment objectives require specific grades of PAC to achieve optimal performance. NINGBO INNO PHARMCHEM CO.,LTD offers a range of PAC products, and understanding their distinctions is key to making an informed choice for efficient water treatment. This guide aims to clarify the different types of PAC and their ideal applications.

The primary differentiator among PAC grades often relates to their Al2O3 content, basicity, and the manufacturing process (e.g., spray-dried vs. drum-dried). These factors directly influence the product's solubility, flocculation efficiency, and the final quality of the treated water.

Drinking Water Grade PAC: This is arguably the most critical application, demanding the highest purity and lowest levels of impurities. Drinking water grade PAC typically has a high Al2O3 content and a precisely controlled basicity. The manufacturing process often involves spray drying, which results in a fine powder with low water insolubles, ensuring excellent solubility and minimal residue. Selecting a certified drinking water grade PAC is essential for public health.

Industrial Wastewater Grade PAC: While still highly effective, industrial PAC grades may have slightly higher levels of water-insoluble matter or different basicity ranges tailored for specific industrial effluents. These grades are designed to handle the complex and often highly contaminated wastewater from sectors like textiles, paper manufacturing, mining, and chemical production. The key is to match the PAC's properties to the specific pollutants present in the wastewater.

Key Parameters for Selection:

  • Al2O3 Content: A higher Al2O3 content generally indicates a more concentrated and potent coagulant.
  • Basicity (%): This parameter influences the charge density and effectiveness of the PAC. Higher basicity usually means better performance in certain applications.
  • Water Insolubles: Lower water-insoluble content is preferred, especially for drinking water, as it ensures better solubility and less sludge formation.
  • Manufacturing Process: Spray-dried PAC generally offers faster dissolution and finer particle size compared to drum-dried PAC, making it preferable for sensitive applications.

NINGBO INNO PHARMCHEM CO.,LTD advises that when selecting a PAC product, it is important to consider the raw water quality, the specific contaminants to be removed, the required water quality after treatment, and the overall treatment objectives. Factors like pH, temperature, and the presence of other chemicals in the water also play a role.

By understanding these distinctions and consulting with knowledgeable suppliers like NINGBO INNO PHARMCHEM CO.,LTD, industries and municipalities can choose the most effective Polyaluminium Chloride grade. This strategic selection optimizes treatment efficiency, reduces costs, and ensures the delivery of clean, safe water.