In municipal sewage treatment plants, cationic polyacrylamide is commonly used for the clarification and dewatering processes. When it comes to the degumming or flocculation stage, the concentration of the polyacrylamide solution is typically adjusted to between 0.1% and 0.3% in the dosing system. This solution is then mixed with the sludge by a pump, which feeds the mixture into a centrifuge or filter press for effective dehydration. Throughout the process, operators continuously monitor the performance based on the quality of the resulting sludge and site-specific conditions. Adjustments are made in real-time to ensure optimal results and efficiency. The key is to maintain the right balance, as too high or too low a concentration can affect the overall performance of the treatment process. This hands-on approach ensures that the system operates at its best under varying operational conditions.
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