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Guide to Selecting the Correct Poly Aluminum Chloride

Nov. 09, 2023

Guide to Selecting the Correct Poly Aluminum Chloride

Poly Aluminum Chloride (PAC) is a commonly used water treatment chemical with various applications, including coagulation and flocculation in wastewater treatment. Selecting the correct PAC for your specific needs is crucial for achieving optimal results. Here's a comprehensive guide to help you make the right choice:

1. Understand Your Water Treatment Requirements

Define the specific requirements of your water treatment process. Identify the impurities, contaminants, or substances you need to remove from the water. Understanding your treatment goals will guide you in selecting the PAC formulation that best addresses your needs.

2. Assess the Water Characteristics

Examine the characteristics of the water you are treating, including pH levels, temperature, turbidity, and the nature of impurities. Different PAC formulations are designed to perform optimally under specific water conditions. Matching the product to your water characteristics is essential for effective treatment.

Poly Aluminum Chloride

3. Determine Coagulation and Flocculation Requirements

Consider whether your water treatment process requires a PAC product with coagulant properties, flocculant properties, or both. Coagulants are effective in destabilizing particles, while flocculants aid in the formation of larger flocs for easier sedimentation and filtration.

4. PAC Formulation Types

Understand the different PAC formulations available, such as liquid, powder, or granular forms. The choice between formulations depends on factors like ease of handling, dosing requirements, and the specific demands of your water treatment system.

5. Aluminum Content and Basicity

Consider the aluminum content and basicity of the PAC product. The aluminum content influences the coagulation performance, while basicity affects the pH stability of the solution. Balancing these factors is crucial for achieving efficient and stable water treatment results.

6. Compliance with Regulatory Standards

Ensure that the selected PAC product complies with local and international regulatory standards for water treatment chemicals. Verify that the product meets the required purity levels and is suitable for use in your specific application, such as drinking water treatment or industrial processes.

7. Dosage and Application Method

Determine the optimal dosage of PAC for your water treatment process. Consider the application method, whether it's through direct dosing, dilution, or in combination with other chemicals. Understanding the dosage requirements and application method is crucial for achieving cost-effective and efficient treatment.

8. Supplier Reputation and Support

Choose a reputable supplier with a track record of providing high-quality PAC products. Consider factors such as the supplier's reputation, technical support, and the availability of relevant documentation, including product specifications and safety data sheets.

9. Pilot Testing

If possible, conduct pilot testing with small-scale applications before full-scale implementation. Pilot testing allows you to assess the performance of the selected PAC product under real-world conditions, ensuring that it meets your treatment objectives effectively.

10. Regular Monitoring and Adjustments

Implement a monitoring program to assess the ongoing performance of the selected PAC. Regularly analyze treated water to ensure that the desired water quality standards are maintained. Make adjustments to dosage or formulation as needed based on monitoring results.


Selecting the correct Poly Aluminum Chloride is a critical step in ensuring effective water treatment. By considering your specific treatment requirements, water characteristics, formulation types, compliance with standards, and other factors outlined in this guide, you can make an informed decision that aligns with your water treatment goals.

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