The effectiveness of Polyacrylamide (PAM) as a flocculant, thickener, or process aid hinges critically on its correct application, including proper dissolution and precise dosage. NINGBO INNO PHARMCHEM CO.,LTD., as a leading polyacrylamide manufacturer in China, emphasizes the importance of these factors to ensure optimal performance for our clients. Understanding how to use PAM correctly is as vital as selecting the right type.

PAM, with CAS No. 9003-05-8, is typically supplied as a powder. It must be dissolved in clean water to form a solution before it can be effectively used in industrial processes. Direct addition of dry PAM to water or sludge can lead to clumping, reduced efficiency, and potential equipment blockages.

Key Steps for PAM Dissolution and Application:

  1. Water Quality for Dissolution: Use clean, preferably neutral, water free from excessive salts or impurities. Tap water is often suitable. Avoid strong acids or alkalis.
  2. Concentration of Solution: PAM solutions are typically prepared at concentrations ranging from 0.1% to 0.5%. The exact concentration can be optimized based on application and batch testing.
  3. Dissolution Process: Slowly sprinkle the PAM powder into agitated water. Moderate stirring speed (e.g., 200-400 rpm for mixing tanks) is crucial to prevent molecular chain breakage. Avoid over-agitation. Heating water slightly (below 60°C) can speed up dissolution, but excessively high temperatures can degrade the polymer.
  4. Maturation Time: Allow adequate time for the polymer chains to fully hydrate and uncoil. This 'maturation' period, often around 30-60 minutes, ensures maximum effectiveness.

Determining Optimal Polyacrylamide Dosage

Calculating the correct PAM dosage is critical and depends on several factors:

  • Application Type: Dosages vary significantly between water treatment, mining, oilfield operations, and papermaking. For instance, water treatment might require dosages in parts per million (ppm), while EOR can use much higher concentrations.
  • Water/Sludge Characteristics: The type and concentration of suspended solids, pH, temperature, and the presence of other chemicals in the water all influence the required PAM dosage.
  • Target Outcome: The desired level of clarity, dewatering efficiency, or viscosity modification will dictate the dosage.

Jar Testing is an indispensable tool for determining the optimal PAM dosage. By testing various PAM types and concentrations on small water samples, you can identify the most effective and economical dosage for your specific conditions. NINGBO INNO PHARMCHEM CO.,LTD. can provide guidance and support for conducting these tests.

Dosage Considerations for Key Industries:

  • Water Treatment: Typically requires very low dosages, often in the range of 0.5 to 5 ppm, depending on turbidity and particle load.
  • Mining: Higher dosages might be needed for efficient tailings dewatering and clarification, often ranging from tens to hundreds of kilograms per ton of dry solids, depending on the sludge characteristics.
  • Oil & Gas: For EOR and friction reduction, dosages can range from hundreds to thousands of ppm, depending on reservoir conditions and desired rheological properties.

As a reliable polyacrylamide supplier, NINGBO INNO PHARMCHEM CO.,LTD. is committed to helping you achieve the best results. We offer high-quality PAM products and the technical expertise to guide your application. When you buy polyacrylamide from us, you get a solution optimized for your industrial needs. Contact us for expert advice on PAM dosage and application and to discuss our competitive polyacrylamide price.