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Water Science & Technology Vol 66 No 1 pp 145–150 © IWA Publishing 2012 doi:10.2166/wst.2012.152

Monitoring the performance of a storm water separating manifold with distributed temperature sensing

J. G. Langeveld, C. de Haan, M. Klootwijk and R. P. S. Schilperoort

Royal Haskoning, Barbarossastraat 35, P.O. Box 151, 6500, AD, Nijmegen, The Netherlands E-mail: j.langeveld@royalhaskoning.com and Delft University of Technology, Department of Sanitary Engineering, Faculty of Civil Engineering and Geosciences, P.O. Box 5048, NL-2600, GA, Delft, The Netherlands
Municipality of Breda, P.O. Box 90156, NL-4800, RH, Breda, The Netherlands


Storm water separating manifolds in house connections have been introduced as a cost effective solution to disconnect impervious areas from combined sewers. Such manifolds have been applied by the municipality of Breda, the Netherlands. In order to investigate the performance of the manifolds, a monitoring technique (distributed temperature sensing or DTS) using fiber optic cables has been applied in the sewer system of Breda. This paper describes the application of DTS as a research tool in sewer systems. DTS proves to be a powerful tool to monitor the performance of (parts of) a sewer system in time and space. The research project showed that DTS is capable of monitoring the performance of house connections and identifying locations of inflow of both sewage and storm runoff. The research results show that the performance of storm water separating manifolds varies over time, thus making them unreliable.

Keywords: disconnection of impervious area; distributed temperature sensing (DTS); illicit connections; monitoring; storm water

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