Polyaluminium Chloride (PAC) is a cornerstone chemical in water treatment, valued for its exceptional coagulating properties. To harness its full potential and ensure safety, proper usage and storage are critical. This guide, provided by a leading Polyaluminium Chloride manufacturer and supplier, outlines best practices for handling this versatile compound.

Usage of Polyaluminium Chloride (PAC):

PAC can be applied in two primary ways: direct addition or as a pre-configured solution. The most effective method and dosage are typically determined through jar tests, which simulate specific water conditions. These tests help identify the optimal PAC grade and concentration for your particular application, whether it's for drinking water treatment, industrial wastewater, or other processes.

1. Direct Addition: This involves adding the PAC product, usually in powder form, directly to the water body being treated. The dosage should be carefully controlled based on jar test results. For large-scale operations, specialized dosing equipment ensures accurate and consistent application.

2. Solution Preparation: For enhanced dispersion and potentially more uniform contact, PAC can be dissolved in water to create a solution. It's advisable to use treated or demineralized water for preparing the solution. Slowly add PAC to the water while stirring continuously until it is fully dissolved. Prepared solutions should ideally be used within 24 hours to maintain their efficacy.

Key Considerations During Usage:

  • pH Control: PAC is effective within a specific pH range. Ensure the water's pH is within the optimal range for coagulation. If necessary, adjust the pH using appropriate alkaline or acidic substances.
  • Mixing and Stirring: Proper mixing is essential for ensuring PAC contacts all suspended solids. Mechanical stirring or aeration for 1-3 minutes at a controlled speed (10-35 r/min) is typically recommended to promote flocculation.
  • Dosing Sequence: When used in conjunction with other treatment chemicals, PAC is generally added first, followed by coagulant aids. Always follow specific process guidelines or consult with technical experts.
  • Water Temperature: While PAC is effective across a range of temperatures, colder water may require slightly adjusted dosages or longer contact times for optimal flocculation.

Storage of Polyaluminium Chloride:

Proper storage is crucial to maintain the quality and effectiveness of PAC. As a chemical that can be sensitive to environmental factors, adhering to storage guidelines preserves its performance:

  • Sealed Storage: Store PAC in a dry, cool, and well-ventilated area. Keep containers tightly sealed to prevent moisture absorption and oxidation, which can lead to caking and reduced efficacy. Avoid contact with incompatible materials.
  • Moisture-Proofing: PAC powder is hygroscopic. Protect it from humidity and avoid direct contact with the ground. Use moisture-proof materials for isolation, and regularly check for any signs of caking.
  • Avoid Heat and Sunlight: Prolonged exposure to direct sunlight or high temperatures can cause clumping and affect product performance. Keep PAC away from heat sources.
  • Safety Precautions: Always follow relevant safety regulations during storage and handling. Wear appropriate personal protective equipment, such as gloves and eye protection. Ensure safety warning signs are clearly visible in the storage area.

By following these usage and storage guidelines, you can ensure that your Polyaluminium Chloride performs optimally, providing efficient and reliable water treatment solutions. As a trusted Polyaluminium Chloride supplier, we are always available to provide technical support and answer any questions you may have. Contact us to learn more about our products and how to buy Polyaluminium Chloride for your specific needs.