10.4122/1.1000001247 Jansons, K. German, J. Howes, T. Evaluating hydrodynamic behaviour and pollutant removal in various stormwater treatment pond configurations DTU Library, Technical University of Denmark (DTU) 2005 Mixing pollutant removal plug flow stormwater treatment pond The University of Queensland, Department of Chemical Engineering Chalmers University of Technology, Water Environment Transport en Conference presentation 10.4122/1.1000001248 text/xml 1 This research aims to establish a relationship between pond geometry and hydrodynamic behaviour. In this paper the mixing quality and pollutant removal efficiency of seven stormwater pond configurations are evaluated. Both two-dimensional depth averaged flow simulations (Mike 21) and a compartmental modelling approach are employed in this process. Outcomes of this study reveal the common design assumption that all stormwater treatment ponds are either plug flow or well mixed is flawed. Results also indicate that square configurations are more susceptible to the formation of mixing imperfections including stagnation, recirculation and short-circuiting than long narrow configurations. The presence of mixing imperfections were also found to adversely impact pond pollutant removal capacity.