Standard sumps are an important component of our stormwater drainage system. Recently they have received significant attention as a stormwater pre-treatment device to remove sediment from stormwater runoff. The objective of this research is to explore some simple structures to be installed inside standard sumps to improve sediment removal efficiency. A number of structures were tested and two structures were found to be most effective in sediment removal. Both structures can increase the sediment removal rate by around 20–25% for sediment sizes of 80–140 μm and 110–170 μm under all tested flowrates, and 10–20% for sediment of 160–240 μm. The flow patterns in these structures were simulated using a numerical model, and the energy loss was also examined. The results of this study offer a new direction for the development of stormwater treatment devices.
Research Article|March 10 2014
Improving sediment removal in standard stormwater sumps
David Z. Zhu
David Z. Zhu
1Department of Civil Engineering, Zhejiang University, Hangzhou, Zhejiang, 310058, China2Department of Civil and Environmental Engineering, University of Alberta, Edmonton AB, Canada T6G 2W2
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