The effectiveness of any water treatment process hinges on using the correct chemical. Polyaluminum Chloride (PAC) is a versatile and highly efficient coagulant, but its optimal performance depends on selecting the appropriate grade for the specific application. As a leading Polyaluminum Chloride manufacturer, we help our clients navigate the different PAC types available in the market, ensuring they achieve the best possible results.

Understanding the Different Grades of PAC
PAC products are typically differentiated by their physical form, color, and key chemical specifications such as Al₂O₃ content and basicity. The most common distinctions are:

  • Industrial Grade PAC: Often appearing as a yellow or dark brown powder or liquid, industrial grade PAC is widely used for treating industrial wastewater, including that from textile, paper, and mining industries. It is effective at removing suspended solids, color, and COD/BOD. Key specifications often include an Al₂O₃ content of 28-29%.
  • Drinking Water Grade PAC: This grade is typically white or light yellow and characterized by very high purity, with minimal insoluble matter and lower heavy metal content. It is specifically designed for the purification of municipal drinking water. Common specifications include 29-30% Al₂O₃ content and very low impurity levels. The white variety is often preferred for applications requiring the highest purity, such as food processing or pharmaceuticals.
  • Filter Grade PAC: This intermediate grade offers a balance of performance and cost, suitable for various water treatment applications where the highest purity of drinking water grade is not strictly required but superior performance to industrial grade is needed.

Key Specifications to Evaluate: Al₂O₃ Content and Basicity
When selecting a PAC product, procurement managers should pay close attention to:

  • Al₂O₃ Content: This indicates the amount of active aluminum oxide present, a key driver of coagulation efficiency. Higher Al₂O₃ content generally means a more concentrated and potent product. For instance, a 30% Al₂O₃ PAC is more potent than a 28% Al₂O₃ PAC.
  • Basicity: Basicity refers to the degree of polymerization of the aluminum species. It influences the charge density and the effectiveness of the PAC in neutralizing impurities. Higher basicity often means greater efficiency in floc formation and a wider effective pH range. Common basicity values range from 40% to 90%.
  • Water-Insoluble Matter: For drinking water applications, this should be as low as possible (typically <0.6% or even lower). For industrial applications, slightly higher levels (e.g., <1.0% or <1.5%) might be acceptable depending on the process.

Choosing the Right PAC Supplier
As a premier PAC supplier in China, we offer a comprehensive range of PAC products tailored for diverse needs. Whether you require industrial-grade PAC for wastewater treatment, high-purity white PAC for potable water, or a specialized grade for precision casting, we can provide the right solution. When you decide to buy Polyaluminum Chloride, consider factors like the supplier's manufacturing expertise, quality control processes, and ability to provide consistent product. Our technical team can assist you in selecting the optimal PAC grade based on your specific water quality parameters and application requirements.

Making an informed choice about the PAC grade will significantly impact your water treatment's effectiveness and cost-efficiency. Consult with us to ensure you are using the most suitable Polyaluminum Chloride for your operations.