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.
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Research Article|
March 10 2014
Improving sediment removal in standard stormwater sumps
Yiyi Ma;
Yiyi Ma
1Department of Civil Engineering, Zhejiang University, Hangzhou, Zhejiang, 310058, China
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David Z. Zhu
1Department of Civil Engineering, Zhejiang University, Hangzhou, Zhejiang, 310058, China
2Department of Civil and Environmental Engineering, University of Alberta, Edmonton AB, Canada T6G 2W2
E-mail: [email protected]
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Water Sci Technol (2014) 69 (10): 2099–2105.
Article history
Received:
August 17 2013
Accepted:
February 24 2014
Citation
Yiyi Ma, David Z. Zhu; Improving sediment removal in standard stormwater sumps. Water Sci Technol 1 May 2014; 69 (10): 2099–2105. doi: https://doi.org/10.2166/wst.2014.122
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