Water is a fundamental resource, and ensuring its purity is paramount. In the realm of water treatment, certain chemicals stand out for their efficacy and versatility. One such chemical is Polyaluminium Chloride (PAC). This article delves into the science behind PAC water treatment, explaining its mechanism of action, its crucial role as a coagulant, and its broad spectrum of applications.

Polyaluminium Chloride, often abbreviated as PAC, is an inorganic polymer coagulant. It is synthesized through the partial hydrolysis of aluminum chloride, resulting in high-molecular aluminum complexes. These complexes possess superior flocculation properties compared to traditional precipitants like aluminum sulfate. The key to PAC's effectiveness lies in its high cation charge. This positive charge allows it to attract and neutralize negatively charged particles suspended in water. As these particles aggregate, they form larger flocs, which can then be easily removed through sedimentation or filtration. This process significantly enhances water clarity and removes impurities such as turbidity, heavy metals, and organic substances.

The benefits of using PAC in water treatment are numerous. It boasts a wide pH range of effectiveness, typically between 5 and 8, making it adaptable to various water conditions without extensive pH adjustment. Furthermore, PAC is known for its efficient performance at low dosages, which translates to reduced chemical costs and less sludge generation compared to older coagulants. This cost-effectiveness, combined with its superior purification capabilities, makes PAC a preferred choice for many municipal and industrial water treatment facilities. It is also recognized for its ability to remove specific pollutants like phosphorus and heavy metals, further contributing to cleaner and safer water.

The applications of PAC extend across various sectors. In municipal drinking water treatment, it ensures the removal of harmful contaminants, providing safe and potable water. For industrial wastewater, PAC is instrumental in treating effluents from industries like paper and pulp, textiles, and oil refining, removing dyes, organic matter, and oil contaminants. Its use in the paper industry aids in pigment and filler retention, while in oil refining, it facilitates efficient oil-water separation. The versatility and effectiveness of Polyaluminium Chloride solidify its position as a cornerstone chemical in modern water purification and treatment strategies. If you're looking to enhance your water treatment processes, consider purchasing PAC from a reliable supplier to achieve optimal results and ensure compliance.