Why Basic Aluminum Chloride (BAC) Is More Efficient Than Traditional Coagulants？

Basic Aluminum Chloride (BAC) is a new-generation, high-efficiency inorganic polymer coagulant that combines the properties of aluminum salts and alkaline compounds. By optimizing the hydrolysis forms of aluminum ions, BAC significantly improves coagulation efficiency. It is widely used in industrial wastewater treatment and drinking water purification.

Why Is BAC More Efficient Than Traditional Coagulants?

Stronger Flocculation Performance

Trivalent aluminum ions (Al³⁺) in BAC have higher polymerization and charge density, enabling rapid neutralization of colloidal particles and forming larger, denser flocs that settle quickly.

Wider Applicable pH Range

Unlike aluminum sulfate or ferric chloride, BAC works efficiently across pH 4.5–9.0, making it less sensitive to water quality fluctuations.

Lower Sludge Production

BAC requires a smaller dosage and produces 30%–50% less sludge than traditional coagulants, reducing sludge treatment and disposal costs.

Excellent Solubility and Easy Handling

Available in yellow to light brown liquid or powder, BAC dissolves easily and is convenient for storage, transportation, and automated dosing.

Clearer Water and Lower Turbidity

Treated water achieves visibly improved clarity and reduced turbidity, making BAC ideal for drinking water and advanced water reuse systems.

Typical Applications of BAC

• Industrial Wastewater Treatment: Effective for wastewater from chemicals, electroplating, dyeing, papermaking, and more.

• Municipal Wastewater Treatment: Applied as a primary coagulant or combined with other treatment agents.

• Drinking Water Purification: Removes turbidity and impurities from raw water, especially during rainy seasons or emergencies.

• Reclaimed Water Treatment: Enhances recycled water purification, improves effluent quality, and reduces overall costs.

Frequently Asked Questions (FAQ)

Q1: How does BAC differ from aluminum sulfate?
A1: BAC has higher polymerization and charge density, works in a wider pH range, requires less dosage, and produces less sludge.

Q2: Is BAC suitable for drinking water treatment?
A2: Yes, BAC is highly effective in drinking water purification, reducing turbidity and improving clarity.

Q3: How effective is BAC for industrial wastewater?
A3: BAC efficiently removes suspended solids and pollutants in chemical, electroplating, dyeing, and paper-making wastewater.

Q4: Does BAC increase treatment costs?
A4: While BAC may cost more per unit, overall operational costs are lower due to reduced dosage and sludge handling.

Q5: How should BAC be stored and transported?
A5: Store BAC in a cool, dry place. Liquid BAC should be protected from freezing, while powder BAC should be kept away from prolonged air exposure.

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