Ensuring access to safe and clean drinking water is a global imperative, and chemical treatment plays a vital role in achieving this. Among the arsenal of water treatment chemicals, Polyaluminum Chloride (PAC) has emerged as a highly effective and widely used coagulant. Specifically, the white, food-grade variant of PAC, often sourced from reputable China manufacturers, offers distinct advantages for potable water production. As a dedicated supplier, we understand the critical nature of this application and are committed to providing a product that meets the highest standards of purity and performance.

Polyaluminum Chloride, identified by its CAS number 1327-41-9, is an inorganic polymer that acts as a primary coagulant. Its mechanism involves neutralizing the negative surface charges of suspended colloidal particles in raw water. This charge neutralization allows these particles to destabilize and begin to aggregate. As these aggregates grow, they form larger, settleable masses known as flocs. The effectiveness of PAC in this process is significantly influenced by its composition, including its basicity and the absence of harmful impurities.

Why White PAC for Drinking Water?

While yellow PAC is a robust coagulant for industrial wastewater, white PAC is the preferred choice for drinking water treatment due to its enhanced purity. The production process for white PAC typically yields a product with lower levels of contaminants and a more consistent chemical composition. This is crucial because any residual elements from the coagulant could potentially be introduced into the finished drinking water. By choosing a high-purity, food-grade white PAC from a trusted supplier, municipalities and water treatment facilities can be assured that they are using a product that minimizes these risks.

The benefits of using white PAC in drinking water treatment are numerous:

  • Superior Turbidity Removal: White PAC effectively clumps together fine suspended particles that cause turbidity, leading to clearer water.
  • Enhanced Color Removal: It efficiently removes dissolved organic matter that contributes to water color.
  • Reduced Sludge Production: Compared to older coagulants like aluminum sulfate, PAC generally produces less sludge, simplifying disposal and reducing operational costs.
  • Efficient Flocculation: It forms dense, rapidly settling flocs, which improves the efficiency of sedimentation and filtration stages.
  • pH Stability: White PAC operates effectively within a specific pH range, typically 3.5-5.0, which can sometimes be more easily managed than with other coagulants.

Sourcing and Application Guidance

When seeking to buy white Polyaluminum Chloride, it is essential to partner with a reliable manufacturer and supplier. We provide PAC that adheres to international standards, ensuring its suitability for potable water applications. Our product's specifications, including its high Al2O3 content and controlled basicity, are designed for maximum efficiency.

The application of PAC in drinking water treatment involves carefully controlled dosing. A jar test is the recommended method to determine the optimal dosage for your specific raw water source. This test helps identify the concentration of PAC that yields the best flocculation and sedimentation without over-dosing, which could affect the final pH or introduce excess aluminum into the treated water. Proper mixing and allowing adequate contact time are also critical for effective floc formation.

As a leading chemical supplier, we are committed to supporting the vital work of ensuring safe drinking water. If your facility requires a reliable source of high-quality white Polyaluminum Chloride, we invite you to contact us for a quote. Our team is ready to assist you in procuring the right product for your needs, ensuring the health and safety of the communities you serve.