ABSTRACT
The evaluation of the performance of sewage networks is currently a very important aspect of activities when deciding on their potential modernisation and/or reconstruction. Mechanistic models constitute a dedicated tool that allows forecasting the quantity and quality of wastewater. One of the frequently used models is SWMM (Storm Water Management Model). This chapter discusses design standards for sewer networks and provides parameters for evaluating the performance of drainage systems under hydraulic overload conditions. Sources of topographic data (land use), drainage systems (sewer network construction), and rainfall for developing mechanistic models are presented. The possibility of using remote sensing techniques to identify parameters requiring calibration was noted. The theoretical basis of model calibration and validation was discussed. Methods (GLUE + GSA) for identifying the parameters of mechanistic models that have a large impact on the modelled hydrograph and a negligible one, which makes it possible to reduce the number of calibrated parameters, are presented. SWMM is presented, and its capabilities are discussed from the field of forecasting the quantity and quality of wastewater in sewerage systems, which can include special devices and facilities, such as storm overflows, retention basins, wastewater pumping stations, and flow regulators.
