Characterizing the behavior of stormwater sediment and its impact on the performance of the storm sewer
A. Hoornick (TU Delft - Civil Engineering & Geosciences)
J.G. Langeveld – Mentor (TU Delft - Sanitary Engineering)
J.P. van der Hoek – Graduation committee member (TU Delft - Sanitary Engineering)
Mark Nijman – Coach (Waternet)
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
Abstract
Stormwater runoff carries solids from streets to the storm sewer and waterbodies, causing sediment accumulation, reduced hydraulic capacity and water pollution. Urban stormwater management is essential, but limited information on sediment behavior and treatment methods hinders decision-making. This study investigated sediment characteristics in Amsterdam, revealing variations across the system, with finer material near the outfall. Settling velocities were lower at the end of the system and resuspension was more likely near the outfall. Monitoring sediment dynamics during rainfall events showed that high-intensity events can mobilize and transport solids. Deviations from standardized test protocols emphasize the need to consider sediment behavior when interpreting predictions. Recommendations include extensive sampling campaigns, collecting both sediment and water samples, refining sampling protocols and investigating resuspension and transportation processes.