Parameter Category | Specific Parameter | Typical Value/Description |
Basic Information | Chemical Name | Polyaluminium Chloride (PAC) |
| Chemical Formula | [Al₂(OH)ₙCl₆₋ₙ]ₘ (n=1-5, m≤10) |
| Appearance | Yellow/brown granular powder or light yellow liquid (liquid PAC) |
Physical Properties | Bulk Density (Powder) | 1.1 - 1.3 g/cm³ |
| Solubility | Easily soluble in water; no sediment after dissolution |
| pH Value (1% Aqueous Solution) | 3.5 - 5.0 (weakly acidic) |
Chemical Indices | Aluminium Oxide (Al₂O₃) Content | Solid PAC: ≥28%; Liquid PAC: ≥10% (industrial grade) |
Performance Parameters | Coagulation Speed | Rapid; forms flocs in 1-3 minutes under normal conditions |
| pH Adaptability | Effective in pH range 5.0 - 9.0 (wide adaptability) |
Safety & Storage | Hazard Class | Non-hazardous; mild corrosiveness to skin (avoid long-term direct contact) |
| Storage Condition | Store in dry, ventilated area; avoid moisture (powder PAC); prevent freezing (liquid PAC) |
2. Wastewater treatment: Polyaluminium chloride is used to remove harmful substances from industrial wastewater and domestic sewage, such as oil stains, dyes, petroleum substances and other organic pollutants. Due to its highly efficient removal capacity, polyaluminium chloride is often used in combination with other water treatment chemicals (such as coagulant AIDS and flocculation auxiliary agents) as a flocculant.
3. River water treatment: In cases of eutrophication and deterioration of water quality, polyaluminium chloride can be used to treat algal blooms and harmful substances in river water, improving water quality.
4. Pulp and paper industry: In the treatment of papermaking wastewater, polyaluminium chloride can effectively remove suspended solids, pulp fibers, and surfactants and other pollutants in water, reducing COD (Chemical Oxygen Demand) and BOD (Biological Oxygen Demand).
5. Chemical Industry: During the chemical production process, wastewater often contains pollutants such as acids, alkalis, salts and metal ions. Polyaluminium chloride can effectively remove these pollutants through flocculation, reducing water pollution.
6. Food industry: In the wastewater treatment of food processing industries such as sugar factories and wineries, polyaluminium chloride can remove suspended solids, color, and oils, etc.