RESEARCH ON OPTIMIZATION OF SAFE WATER DELIVERY AND WATER QUALITY CONTROL OF SEWAGE SYSTEM BASED ON INTEGRATED CATCHMENT MANAGEMENT (ICM)

Use the ICM model as a tool to investigate, analyze and summarize the basic data of the sewage system to form a sewage system database to construct the sewage pipe network model topology. Use the model checking tool to check and carry out the error data in the pipe network during the model building process. The second re-survey makes the topology of the model more accurate. Determine the relevant parameters of the model through on-site investigations, query relevant information and relevant literature, use the basic data provided by relevant departments to set the flow process line and delimit the population of the catchment area, and use the measured daily cumulative flow data of the pumping station and the sewage treatment plant. The average value of the influent water quality index is used to calibrate and check the model, and build a credible hydraulic model and water quality model of the sewage pipe network. The checked sewage pipe network model is used to evaluate the current status of the sewage system. The current water delivery capacity of the pipe network is analyzed from the three perspectives of pipeline overload status, flow rate, and pump station operating status. The pipeline is at full load or even Overload operation, the current operating state is poor. A simulation comparison of different sediment depths shows that the clogging seriously affects the water delivery capacity and regulation and storage capacity of the pipeline network.