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

1. What Is Basic Aluminum Chloride (BAC)?

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

2. Why Is BAC More Efficient Than Traditional Coagulants?

Stronger Flocculation Performance

The trivalent aluminum ions (Al³⁺) in BAC have a higher degree of polymerization and charge density. This enables them to rapidly neutralize the charges of colloidal particles in water, forming larger and denser flocs that settle faster.

Wider Applicable pH Range

Compared to traditional coagulants like aluminum sulfate or ferric chloride, BAC performs efficiently across a broad pH range (pH 4.5–9.0), making it less sensitive to water quality fluctuations.

Lower Sludge Production

BAC requires a smaller dosage to achieve the same or better coagulation effect, and it generates 30%–50% less sludge compared to conventional coagulants. This translates to significant cost savings in sludge treatment and disposal.

Excellent Solubility and Easy Handling

Available as a yellow to light brown liquid or powder, BAC dissolves easily and is convenient to store, transport, and apply—particularly well-suited for automated dosing systems.

Clearer Water and Lower Turbidity

Treated water shows visibly improved clarity, with significantly reduced turbidity and color. BAC is particularly effective in applications where water quality is critical, such as in drinking water treatment or advanced water reuse systems.

3. Typical Applications of BAC

-Industrial Wastewater Treatment
Ideal for wastewater from industries such as chemicals, electroplating, dyeing, papermaking, and more.

-Municipal Wastewater Treatment
Used as a primary coagulant or in combination with other treatment chemicals in municipal sewage plants.

      -Drinking Water Purification
      Effective in removing turbidity and impurities in raw water sources, especially during the rainy season or emergency water supply situations.

      -Reclaimed Water Treatment
      Enhances the purification of recycled water, improves effluent quality, and reduces overall treatment costs.

4. Conclusion: Choose BAC for Smarter, Cleaner Water Treatment

With its high efficiency, low dosage, and reduced sludge generation, Basic Aluminum Chloride (BAC) is becoming the preferred choice over traditional inorganic coagulants.

It offers a smarter, more sustainable solution for modern water treatment needs.

Whether you’re treating industrial wastewater or producing clean drinking water, BAC delivers excellent performance and cost savings.