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Updated: Jul 6, 2025

Capturing Flow-weighted Water and Suspended Particulates from Agricultural Canals During Drainage Events
Published on: November 7, 2017
Flow field and sediment removal in a stormwater sump utilizing internal structures
Chunling Wang1, David Z Zhu2, Biao Huang3
1School of Civil Engineering and Architecture, Taizhou University, Taizhou, Zhejiang 318000, China; School of Civil and Environmental Engineering, Ningbo University, Ningbo, Zhejiang 315200, China
Abstract:
This study investigated the hydraulic characteristics of stormwater sumps and their design optimization for sediment retention using physical experiments. Particle image velocimetry was utilized to measure the flow field, and the use of internal structures was investigated for improving solids retention. Results indicate that these internal structures can significantly improve the sediment removal efficiency of suspended solids with an average size of 125 μm, resulting in an efficiency improvement of 20-30%. Additionally, a modified Péclet number was proposed to more accurately evaluate the sediment removal efficiency of stormwater sumps, and recommendations were provided for further improving and optimizing sump design. This study provides insights into the hydraulic characteristics of stormwater sumps and has important implications for optimizing and designing particle removal systems for various industrial and environmental applications.
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