High Performance Polyaluminium Chloride (PAC) for Drinking Water Purification

Product Specification

Product Title

Polyaluminium Chloride (PAC) - High Performance Coagulant for Water Treatment & Effluent Purification

English Description

Polyaluminium Chloride, abbreviated as PAC, with the general chemical formula [Al₂(OH)ₙCl₆₋ₙ]ₘ, is a high-efficiency inorganic polymeric coagulant. This product exists in an intermediate state between AlCl₃ and Al(OH)₃, formed through hydroxyl bridge polymerization, characterized by a highly charged, polynuclear complex structure. As a core chemical in modern water treatment technology, PAC is widely used in critical fields such as drinking water purification, industrial wastewater treatment, municipal sewage treatment, paper sizing, and precision casting, owing to its exceptional properties: broad pH adaptability, rapid formation of dense flocs, fast settling速度, high efficiency in removing turbidity and color, low dosage requirements, and low corrosivity.

In-Depth Analysis of Core Applications:

1. The Guardian of Safe Drinking Water Purification: PAC is the preferred coagulant for water treatment plants and advanced drinking water treatment. It efficiently removes suspended particles, colloidal substances, microorganisms, natural organic matter (e.g., humic acids), and some heavy metals from raw water, significantly reducing effluent turbidity, color, and COD. The flocs formed are coarse and dense with excellent settling properties. Furthermore, the residual aluminum content in treated water is controllable, complying with national drinking water hygiene standards (e.g., GB5749), making it key to ensuring safe and clear water supply.

2. The Versatile Performer in Industrial and Municipal Wastewater Treatment: PAC demonstrates strong versatility in treating various industrial wastewaters (e.g., from papermaking, textile dyeing, electroplating, food processing, pharmaceuticals, and petrochemicals) and municipal sewage. For difficult-to-treat wastewater with high concentrations, high color, and complex compositions, PAC effectively breaks emulsions, removes phosphorus, reduces COD, and eliminates heavy metal ions through charge neutralization and adsorption bridging. This lays a solid foundation for subsequent biological treatment or compliance discharge.

3. The Quality Assistant in the Paper Industry: In papermaking processes, PAC is extensively used as a neutral sizing precipitant and retention/drainage aid. It improves the retention of fine fibers and fillers, enhancing paper formation, strength, and dewatering properties while reducing white water concentration. This saves raw materials and minimizes environmental pollution.

4. Innovative Applications in Other Fields: It serves as a shell hardening agent in precision casting; a raw material for antiperspirants in cosmetics; an astringent in pharmaceuticals; and plays important roles in leather tanning and oil-water separation processes.

This product comes in various forms, including liquid (light yellow to reddish-brown) and solid (flake, powder). The liquid form is convenient for use, suitable for automated dosing systems; the solid form facilitates transportation and storage. We offer multiple specifications based on Basicity (B value) and Alumina (Al₂O₃) content, and can provide product selection optimization and complimentary lab testing tailored to customers' specific water characteristics. As a professional manufacturer of water treatment chemicals, we possess a complete quality control system and stable supply capacity. We are committed to providing our global clients with cost-optimal PAC products and comprehensive technical services to jointly address water treatment challenges.