Polyaluminum Chloride (PAC) is a versatile coagulant, but its effectiveness can vary significantly depending on the specific grade chosen and the intended application. Understanding the differences between the common PAC grades—white powder, yellow powder, and yellow-brown powder—is crucial for optimizing water treatment processes and achieving the desired outcomes, whether for industrial effluent or drinking water purification.

The primary distinction between these grades lies in their purity and the resulting color. White powder PAC is the highest purity form, typically used in applications where stringent quality standards are required. These include the paper industry, certain food processing applications (e.g., sugar refining), cosmetics, and the production of high-grade potable water. The low level of impurities ensures it meets sensitive industry requirements, a key aspect of White Powder PAC applications.

Yellow powder PAC is commonly employed for domestic water treatment and municipal sewage. It offers a good balance of performance and cost-effectiveness. Its slightly lower purity compared to white powder does not significantly compromise its efficacy in removing turbidity, suspended solids, and colloidal matter from drinking water sources. This makes it a popular choice for large-scale water purification projects.

Yellow-brown powder PAC is generally used for treating industrial wastewater, particularly effluents from industries like textile dyeing, papermaking, and electroplating. It is designed to handle higher contaminant loads and specific industrial pollutants. While effective, its use in potable water is typically restricted due to its higher impurity content.

When selecting a PAC grade for Industrial Water Treatment, several factors should be considered. The nature of the contaminants, the required water quality standards, and cost considerations all play a role. For instance, a paper mill might opt for white powder PAC to ensure minimal impact on paper brightness, while a textile factory might use yellow or yellow-brown powder PAC to tackle complex dye effluents.

The technical Polyaluminum Chloride properties such as Al2O3 content, basicity, and water-insoluble matter are critical indicators of performance. Manufacturers like NINGBO INNO PHARMCHEM CO.,LTD. provide detailed product specifications, allowing users to match the PAC grade to their specific treatment needs. The advantages of PAC over aluminum sulfate are often amplified when the correct PAC grade is selected, leading to better efficiency and cost savings.

For any organization looking to buy/purchase PAC, consulting with experienced suppliers is highly recommended. They can offer expert guidance on choosing the most appropriate grade, ensuring optimal performance and compliance. By carefully selecting the right Polyaluminum Chloride, businesses can significantly enhance their water treatment processes, contributing to both operational efficiency and environmental sustainability.