A water quality model POND for eutrophication and pollutant removal in urban stormwater runoff detention ponds has been developed. The numerical simulation model is a relatively simple, one-dimensional deterministic water quality model consisting of a set of differential equations. Included are processes describing the removal and accumulation of dissolved and particulate constituents as well as processes concerning the yearly cycle of phytoplankton growth and nutrient transformations. The input to the pond is based on runoff quality data and a historical rainfall record.
The model has been used to simulate eutrophication and removal of phosphorus and heavy metals in an urban runoff detention pond. Especially the importance of the pond volume, i.e. the residence time of the runoff water in the pond, for pollutant removal and eutrophication has been analysed. Simulations were carried out based on measured runoff quality data and a 33 years of rainfall record. Dry, normal and wet years and summers were selected for the analysis.
Performance Analysis of Urban Runoff Quality Control Ponds By Continuous Simulation
