Improving sediment removal in standard stormwater sumps.
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.
Department of Civil Engineering, Zhejiang University, Hangzhou, Zhejiang, 310058, China E-mail: david.zhu@ualberta.ca.
Yiyi
Y
Ma
Department of Civil Engineering, Zhejiang University, Hangzhou, Zhejiang, 310058, China E-mail: david.zhu@ualberta.ca; Department of Civil and Environmental Engineering, University of Alberta, Edmonton AB, Canada T6G 2W2.
David Z
DZ
Zhu
D019015:Geologic Sediments; D011891:Rain; D014865:Waste Disposal, Fluid / Q000379:methods*; D014873:Water Pollutants
D014873:Water Pollutants