Overview
EF-PAC, or Polyaluminium Chloride (PAC), is an inorganic polymer coagulant widely used in water treatment and industrial applications. It is known for its high efficiency in removing suspended solids and organic matter from water. EF-PAC is favored over traditional coagulants like alum due to its lower residual aluminum content and broader pH tolerance. The compound is synthesized through the polymerization of aluminum chloride and hydroxide, resulting in a highly effective coagulant. Its polymeric structure allows for better charge neutralization and flocculation, making it ideal for treating both drinking water and industrial wastewater.
Physical and Chemical Properties
EF-PAC typically appears as a yellowish or white powder, depending on its purity and manufacturing process. It is highly soluble in water, forming a clear or slightly turbid solution. The density of EF-PAC is approximately 1.2 g/cm³, and it exhibits excellent stability under various pH conditions. One of the key properties of EF-PAC is its high coagulation efficiency, which is attributed to its polymeric structure. This structure provides a high positive charge density, enabling effective neutralization of negatively charged colloidal particles in water. Additionally, EF-PAC produces less sludge compared to traditional coagulants, reducing disposal costs.
Main Applications
EF-PAC is primarily used in water treatment processes, including the purification of drinking water, industrial wastewater, and sewage. Its ability to remove turbidity, color, and organic contaminants makes it a preferred choice for municipal and industrial water treatment plants. Beyond water treatment, EF-PAC is also employed in the paper manufacturing industry as a retention and drainage aid. It helps improve paper quality by enhancing fiber retention and reducing water content in the paper pulp. Other applications include use in the textile industry for dye fixation and in the oil industry for oil-water separation.
Safety and Storage
While EF-PAC is generally considered safe for use, proper handling and storage are essential to prevent health risks. Direct contact with skin or eyes can cause irritation, and inhalation of dust should be avoided. Workers should use protective equipment such as gloves, goggles, and masks when handling the chemical. EF-PAC should be stored in a cool, dry place, away from moisture and incompatible substances like strong acids or bases. The storage area should be well-ventilated to prevent the accumulation of dust. Proper labeling and containment are also critical to ensure safe handling and transportation.
B2B Procurement Guide
When procuring EF-PAC for industrial or municipal use, buyers should prioritize quality and reliability. Key factors to consider include the purity of the product, coagulation efficiency, and the supplier's certifications. It is advisable to request product samples and conduct pilot tests to evaluate performance under specific conditions. Price negotiations should take into account the volume of purchase, with bulk orders typically attracting discounts. Buyers should also verify the supplier's logistics capabilities to ensure timely delivery. Establishing long-term partnerships with reputable suppliers can help secure consistent quality and favorable terms.