Detection of Exfiltration in Sewer Systems with Tracers

Conference Paper (2019)
Author(s)

B. Stegeman (TU Delft - Sanitary Engineering)

JG Langeveld (Partners4UrbanWater, TU Delft - Sanitary Engineering)

T.A. Bogaard (TU Delft - Water Resources)

F.H.L.R. Clemens (Deltares, TU Delft - Sanitary Engineering)

Research Group
Sanitary Engineering
Copyright
© 2019 B. Stegeman, J.G. Langeveld, T.A. Bogaard, F.H.L.R. Clemens
DOI related publication
https://doi.org/10.1007/978-3-319-99867-1_141
More Info
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Publication Year
2019
Language
English
Copyright
© 2019 B. Stegeman, J.G. Langeveld, T.A. Bogaard, F.H.L.R. Clemens
Research Group
Sanitary Engineering
Bibliographical Note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.@en
Pages (from-to)
820-824
ISBN (print)
978-3-319-99866-4
ISBN (electronic)
978-3-319-99867-1
Reuse Rights

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

Due to the ageing of our underground wastewater infrastructure, leakage of sewers and pressure mains and subsequent infiltration or exfiltration are becoming an increasingly important issue. Herein, we present a novel method to detect and potentially quantify exfiltration from sewer systems under variable flow conditions; the DEST method. The DEST method is based on the principle of setting up a mass balance of a tracer substance. At an upstream point a tracer is injected in a sewer with a constant rate for a certain period, subsequently downstream high frequent time discrete grab samples are combined with discharge measurements to complete the mass balance. The method is applied on a sewer section in Loenen (NL) to investigate its feasibility. Two different tracers are used; Lithium chloride and Deuterium. Preliminary results indicate that both tracers show similar behaviour at the downstream measurement point. Final lab results are expected at the end of March, allowing in depth analysis of the experimental results with a focus on the measurement uncertainty.

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