Poly Aluminum Chloride (PAC), also known as poly aluminium chloride, is a powerful and versatile chemical compound used in water treatment processes. PAC is manufactured by reacting aluminium hydroxide with hydrochloric acid or through partial neutralization of aluminium chloride solution.
PAC is widely recognized for its effectiveness in removing suspended solids, colloidal particles, organic matter, and contaminants from water sources. With its high charge density and larger molecular size, PAC promotes the formation of larger flocs, facilitating efficient sedimentation and filtration. This results in improved water clarity and reduced strain on downstream filtration systems.
One of the key advantages of PAC is its adaptability across a broad pH range, making it suitable for treating various water sources with different pH levels. It is commonly used in municipal drinking water treatment, wastewater treatment, and industrial process water treatment applications.
In municipal water treatment, PAC aids in the removal of impurities, including colour, odour, and natural organic matter (NOM), ensuring safe and aesthetically pleasing drinking water. In wastewater treatment, PAC effectively removes pollutants, oils, greases, heavy metals, and other contaminants, minimizing environmental impact.
PAC is also employed in industrial settings to control scaling and fouling, enhancing heat transfer efficiency and reducing energy consumption. By preventing the deposition of contaminants on heat exchange surfaces, PAC helps maintain optimal performance in industrial processes.
Furthermore, PAC exhibits excellent stability and has an extended shelf life compared to other coagulants. This characteristic reduces the frequency of chemical dosing, resulting in cost savings and improved operational efficiency.
With its remarkable properties and numerous advantages, PAC is a preferred choice for water treatment professionals and industries around the world. It plays a crucial role in ensuring the availability of clean and safe water, contributing to the sustainability and well-being of both human populations and the environment.