Polyacrylamide is a high-molecular-weight polymer. Consequently, its preparation and dosing are susceptible to external factors. Therefore, today we shall discuss how to achieve optimal results during preparation and dosing, along with key considerations to bear in mind.
Polyacrylamide finds extensive application in wastewater treatment as a water treatment chemical. Market expansion, production volume growth, and application breadth have all increased. Moreover, its utility extends beyond water treatment. Currently, polyacrylamide in China is extensively employed across industries including petroleum extraction, water treatment, and papermaking. Petroleum extraction represents a significant consumer market domestically. Projections indicate that over the coming years, the product's application and market presence across major industries will broaden considerably. Furthermore, usage volumes are anticipated to exhibit a sustained upward trend. Against this backdrop, what considerations should be observed when utilising polyacrylamide?
Polyacrylamide is typically supplied as a solid product, necessitating dissolution prior to use. During preparation, one may observe white particles in the solution, which may persist even after prolonged stirring. This occurs when the correct method is not followed. It is important to note that chemical agents must be prepared according to the required dosage during dissolution and formulation. In the common process of preparing coagulants, many individuals, seeking to save time, add the solid or liquid agent directly into the container in one go, relying on thorough stirring for dissolution. While these products are water-soluble, improper handling can lead to the formation of white particles. This directly impacts the efficacy of the application.
Therefore, prior to dosing, verify that the agitator is functioning correctly. Additionally, ensure clean tap water is used when dissolving polyacrylamide. Furthermore, during dosing, ensure the product granules are thoroughly dispersed. Avoid placing them too close to the agitator, as the mixing speed near the inner edge is relatively slow. Adding the product in this area may impede the agitator's mixing efficiency. The optimal addition point is where the water flow is rapid, as this location also facilitates more thorough dissolution. After complete addition, continue thorough mixing until the solution transforms into a fully colourless, transparent viscous liquid. Only then is the preparation complete, yielding a product with optimal performance.
