Aluminum Chlorohydrate (ACH)

Compared to traditional flocculants (such as alum, aluminum sulfate, conventional polyaluminum chloride (PAC), and ferric chloride), ACH flocculants offer advantages in their unique chemical structure (high basicity, high degree of polymerization, and high cationic charge density), significantly improving water treatment efficiency, applicability, effectiveness, and environmental friendliness.

• Efficiency and cost-effectiveness: Low dosage, fast reaction, and low sludge production.
• Application range: Wide pH adaptability (4.0-9.5), resistant to low temperatures and high turbidity.
• Effluent quality: Low residual aluminum, stable pH, and excellent water quality.
• Operating environment: Good solubility, low corrosion resistance, and simple equipment maintenance.

• Highly Efficient Flocculation Performance. Aluminum chlorohydrate (ACH) quickly hydrolyzes in water to form positively charged polynuclear complex ions. These ions effectively neutralize negatively charged suspended particles, colloidal substances, and organic matter. Through charge neutralization, adsorption bridging, and sweep flocculation, these particles rapidly combine into larger flocs, making subsequent sedimentation or filtration easier. As a result, ACH serves as an important flocculant in various water treatment processes.
• Wide pH Adaptability. ACH maintains good flocculation performance across a relatively wide pH range, typically 5–9. Therefore, operators can use it under different water quality conditions without making excessive pH adjustments. This flexibility simplifies treatment procedures and helps reduce operating costs.
• Excellent Water Purification Performance. ACH treatment can significantly reduce turbidity, color, COD (chemical oxygen demand), and certain heavy metal ions in water, thereby improving overall water quality. In addition, aluminum chlorohydrate can help remove algae and other microorganisms during water treatment, contributing to improved water quality and safety. Its effectiveness against specific microorganisms depends on the treatment conditions.
• Low Toxicity and Biosafety. Although aluminum chlorohydrate may irritate the skin and eyes, proper handling helps minimize exposure risks. Furthermore, its environmental impact depends on dosage, water chemistry, and treatment conditions. When operators follow recommended procedures and control residual aluminum levels, ACH can support effective water treatment while helping prevent adverse effects on treated water.
• Stability and Easy Storage. Aluminum chlorohydrate powder offers convenient storage and transportation under suitable conditions. Similarly, its aqueous solution generally maintains good stability and resists precipitation or stratification when properly prepared and stored. These characteristics make product handling and routine use more convenient.
• Wide Range of Applications. Beyond water treatment, ACH also serves other industrial and commercial purposes. In the cosmetics industry, manufacturers use it as an active ingredient in antiperspirant products to help reduce perspiration. Additionally, certain formulations have applications in pharmaceutical and topical products. In papermaking, ACH can function as a retention and drainage aid, helping improve production efficiency and paper quality.
• Environmental Considerations and Sustainability. ACH can support more efficient water treatment and help facilities meet applicable discharge or reuse requirements when they select suitable dosages and treatment processes. Moreover, operators can combine it with other water treatment chemicals to optimize purification performance and operating costs. Its overall environmental impact depends on raw materials, production methods, chemical consumption, and sludge management.