For the PAC products, is it always better to have low basicity?
Today let’s talk about something about the basicity of Polyaluminum Chloride(PAC) products. We all know, for the PAC products, basicity is also an important element in determining the final price. Then is it always better to use the low basicity PAC?
Well, basicity should be determined based on the specific application scenario; there’s no absolute “high” or “low” for best. The following are key criteria for determining effectiveness:
Application Scenario Determines Advantages and Disadvantages
Wastewater Treatment:
Highly turbid wastewater (such as printing and dyeing, and chemical wastewater) is more suitable for products with higher basicity, as they offer a more effective flocculation effect.
Using high-basicity products for low-turbidity water (such as drinking water) may cause turbidity, so a low-basicity product should be selected.
Production Cost:
Higher basicity reduces raw material consumption and reduces production costs. However, drinking water-grade products have higher environmental requirements, which can increase raw material costs.
Industry Standard Reference: The basicity of industrial-grade polyaluminum chloride is typically around 85-90%, while that of drinking water-grade products is around 45-60%.
Selection Principles
Water quality determines salinity: For high turbidity water, choose a high-basicity PAC; for low turbidity or drinking water, choose a low-basicity PAC.
Economic Considerations: High-basicity PAC offers lower costs, but a balance must be struck between effectiveness and stability.
Experimental Verification: Before practical application, the optimal salinity should be determined through pilot tests to avoid theoretical deviations.
