Monitoring and characterising the solids loading dynamics to drainage systems via gully pots

Rietveld, M.W.J.; Clemens, F.H.L.R.; Langeveld, J.G.

doi:10.1080/1573062X.2021.1925706

Monitoring and characterising the solids loading dynamics to drainage systems via gully pots

Title

Monitoring and characterising the solids loading dynamics to drainage systems via gully pots

Author

Rietveld, M.W.J. (TU Delft Sanitary Engineering)
Clemens, F.H.L.R. (Deltares; Norwegian University of Science and Technology (NTNU))
Langeveld, J.G. (TU Delft Sanitary Engineering; Partners4UrbanWater)

Date

2021

Abstract

Runoff (re)mobilises solids and their associated pollutants from streets and transports them via gully pots to the drainage system. As the solids negatively impact the performance of the drainage systems, knowledge on the solids loading in terms of mass and composition is essential. However, monitoring data on the solids loading, in particular, covering all seasons and a number of sites, is scarce. This article presents the results of a monitoring campaign on the solids loading to a drainage system via 52 gully pots over a period of 2 years at a sampling rate of once per 3–4 weeks. The loading shows a maximum during the tree phases ‘leaf growth’ and ‘full capacity’ and is correlated with the rain intensity during these phases. The organic fraction and D₅₀ of the solids are correlated with leaf abscission. The settling velocity of the particles <1800 µm is strongly correlated with their organic fraction.

Subject

catch basin
Gully pot
solids
urban drainage
wash-off

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http://resolver.tudelft.nl/uuid:4c6c1579-da78-4c10-917d-8a86f0d06a75

DOI

https://doi.org/10.1080/1573062X.2021.1925706

ISSN

1573-062X

Source

Urban Water Journal, 18 (9), 699-710

Part of collection

Institutional Repository