NINGBO INNO PHARMCHEM CO.,LTD. emphasizes that while Polyacrylamide (PAM) is a highly effective chemical for water treatment and various industrial applications, achieving optimal performance hinges on correctly determining its dosage. Incorrect dosage can lead to either insufficient treatment or wasted product, impacting both efficiency and cost-effectiveness. This guide outlines the key factors influencing PAM dosage determination.

The primary determinant of PAM dosage is the specific application and the characteristics of the water or medium being treated. In water purification, for example, the type and concentration of impurities, the pH of the water, and the temperature all influence how much PAM is needed. Generally, for raw water treatment, dosages can range from 0.03 to 0.4 mg/L. Higher turbidity or a greater concentration of suspended solids typically requires a higher PAM dosage to effectively flocculate all particles. Similarly, the type of PAM used plays a significant role. Cationic PAM, often used for sludge dewatering, might require different dosage levels compared to anionic PAM used in industrial wastewater clarification.

Factors such as the molecular weight and ionic charge density of the PAM product itself also dictate the optimal dosage. Higher molecular weight PAM generally offers better bridging capabilities, potentially allowing for lower dosages. Likewise, the ionic charge of the PAM needs to be compatible with the charge of the particles being treated; using a PAM with an inappropriate charge might require higher dosages or yield poor results. For instance, if the water contains predominantly negatively charged particles, a cationic PAM would be more effective, possibly at a lower dosage than an anionic PAM would be.

Process conditions, including mixing intensity and reaction time, are also critical. Effective dispersion of the PAM solution is essential for it to interact with the target particles. Insufficient mixing can lead to localized high concentrations of PAM, reducing its overall effectiveness and potentially requiring a higher initial dose to compensate. NINGBO INNO PHARMCHEM CO.,LTD. recommends conducting jar tests or pilot studies to fine-tune the PAM dosage for specific operational parameters. These tests involve varying the PAM concentration and observing the results—such as floc formation, settling speed, and water clarity—to identify the most efficient and cost-effective dosage. By carefully considering these factors and working with experienced suppliers like NINGBO INNO PHARMCHEM CO.,LTD., users can ensure they are maximizing the benefits of PAM in their water treatment and industrial processes.