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Industrial-grade PAC
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High-efficiency coagulant--Polyaluminium chloride
Polyaluminium chloride is an inorganic polymer coagulant. Due to the bridging effect of hydroxide ions and the polymerization of multivalent anions, it produces an inorganic polymer water treatment agent with a large molecular weight and a high charge.
Advantage of Polyaluminium chloride
This product can remove bacteria, odor, fluorine, aluminium, chromium, oil, turbidity, heavy metal salts, radioactive pollutants, and has a wide range of uses in the process of purifying various water sources. Such as:
● purification of drinking water,
● domestic sewage,
● industrial water, industrial wastewater,
● mines, oil field water injection,
● water purification, metallurgy, coal washing,
● leather and various chemical wastewater treatment;
● industrial production applications: papermaking, sizing, printing and dyeing, bleaching and dyeing, cement accelerator,
precision casting hardener, refractory adhesive, glycerin refining: cloth wrinkle prevention, medicine, cosmetics and other
industries, wastewater can be recycled.
● In the steelmaking industry, it is used for sewage separation with excellent results.
Difference Between 3 kinds of Polyaluminium Chloride:
Feature | Yellow Powder PAC | Yellow Granular PAC | Brown Granular PAC | Key Differences |
Appearance | yellow powder | yellow granules | brown granules | ▶Granule Integrity: Brown PAC has higher hardness for harsh transport. |
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Raw Materials | Bauxite +Calcium aluminate powder+ HCl | Bauxite +Calcium aluminate powder+ HCl | Bauxite +Calcium aluminate powder+ HCl | ▶Iron Content: Brown PAC uses iron-rich slag, boosting coagulation in acidic water. |
Production Process | Roller drying +Spray drying process | Roller drying | Roller drying | ▶Density: Brown PAC has 20% higher bulk density (0.95 g/cm³ vs. 0.75 g/cm³ for powder). |
Al₂O₃ Content(%) | 28-30 | 26-28 | 24-26 | ▶Active Ingredient: yellow powder PAC has 2-4% higher Al₂O₃ than brown. |
Basicity (%) | 60-90 | 60-90 | 60-90 | ▶Acid Tolerance: Low basicity allows brown PAC to work at pH 2-4. |
Water Insolubles | ≤0.6% | ≤0.8% | ≤0.75% | ▶Dissolution Speed: Powder: <5 min; Granules: 15-30 min (slow-release). |
Bulk Density | 0.65-0.75 g/cm³ | 0.75-0.85 g/cm³ | 0.90-1.0 g/cm³ | ▶Storage Efficiency: Brown PAC saves 30% storage space vs. powder. |
Primary Applications | •Urban sewage •Tap water •water works
| •Paper mills | •Coal mining acid water | ▶Niche Use: Brown PAC excels in acidic/high-SS wastewater where others fail. |
Advantages | •Fast dissolution | •Low dust | •Extreme pH stability | ▶Operational Benefit: Yellow granules reduce labor cost in windy outdoor plants. |
Instruction of Polyaluminium chloride:
1. Before use, add PAC to tap water at a concentration of 5%-10% and stir it to be fully dissolved .
2. The dosage can be determined by lab test based on the properties of the raw water and the amount of alum flowers formed.
3. Generally, it is used on the same day of preparation. It is normal to have a slight sediment.
Package and Storage of Polyaluminium chloride:
PAC is easy to absorb moisture, so it should be stored in cool and dry place, avoid from rain and sunlight, at the temperature no higher than 40 ℃.
