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376Polyaluminium Chloride (PAC) Product Overview Polyaluminium Chloride (PAC) is an inorganic high-molecular coagulant used in water treatment. It is formed through the bridging effect of hydroxide ions and polymerization of polyvalent anions, resul
Polyaluminium Chloride (PAC) is an inorganic high-molecular coagulant used in water treatment. It is formed through the bridging effect of hydroxide ions and polymerization of polyvalent anions, resulting in a substance with a large molecular weight and high charge density.
PAC is primarily used for the purification of drinking water, industrial water, and various types of wastewater and sewage. It is effective in deodorization, sterilization, decolorization, and corrosion inhibition. It shows significant performance in treating industrial wastewater containing iron, chromium, manganese, zinc, phenol, sulfur, and fluoride.
| Parameter | Specification |
|---|---|
| Appearance | White, yellow, or brown granules or powder |
| Al₂O₃ Content (%) | ≥ 26–28 |
| Basicity (%) | 40–90 |
| Density (g/cm³) | — |
| Insoluble Matter in Water | ≤ 1.5% |
| Packaging | 25 kg per kraft paper bag or white woven bag |
Primary Uses:
Water treatment and flocculation agent
Suitable for purifying drinking water and special water sources, including the removal of iron, cadmium, fluoride, and floating oil
Effective in industrial wastewater treatment, such as textile dyeing wastewater
Widely used in industries such as papermaking, pharmaceuticals, leather tanning, and more
Additional Industrial Applications:
As a sizing agent in papermaking
As a fast-setting agent in cement
As a hardener in precision casting
As an adhesive in refractory materials
In refining glycerin, fabric wrinkle resistance, cosmetics, and pharmaceuticals
PAC is typically available in solid form. Liquid forms are colorless to light yellow or brownish transparent/semi-transparent liquids. Solid PAC is highly hygroscopic and may clump, but it dissolves easily in water. The recommended solution concentration for use is around 10%. It is a cationic high-polymer flocculant widely used in wastewater treatment.
Rapid floc formation with strong activity and good filtration performance
Does not require alkaline additives, and performance remains stable even after moisture absorption
Broad pH adaptability (optimal pH range: 7–9; applicable range: 4–14)
Wide range of applications
Low salt residue in treated water
When combined with Polyferric Sulfate, it can effectively remove heavy metals and radioactive contaminants from water
Preparation:
Prepare a 5%–10% solution by dissolving in water. Stir thoroughly for uniform mixing.
Dosage:
Dosage varies depending on the quality of the water being treated. Determine the optimal dosage through small-scale trials based on the turbidity of the wastewater.
Operating Conditions:
Effective within a pH range of 4–14, with an optimal range of 7–9.
