Assessment of detection limits of fiber-optic distributed temperature sensing for detection of illicit connections

Assessment of detection limits of fiber-optic distributed temperature sensing for detection of illicit connections

Nienhuis, J.
De Haan, C.
Langeveld, J.G.
Klootwijk, M.
Clemens, F.H.L.R.

Civil Engineering and Geosciences

Water Management

2012-09-04

Distributed Temperature Sensing (DTS) with fiber-optic cables is a powerful tool to detect illicit connections in storm sewer systems. High frequency temperature measurements along the in-sewer cable create a detailed representation of temperature anomalies due to illicit discharges. The detection limits of the monitoring equipment itself are well-known, but there is little information available on detection limits for the discovery of illicit connections, as in sewers mixing and attenuation also plays an important role. This paper describes the results of full-scale experiments aiming to quantify the detection limits for illicit connections under various sewer conditions. Based on the results, a new monitoring setup for (partially) filled sewer conduits has been proposed.

DTS
illicit connections
detection limit
temperature monitoring
foul sewer
storm sewer

http://resolver.tudelft.nl/uuid:718734de-e33d-47f1-8472-6cf88f1d0528

IAHR/IWA Joint Committee Urban Drainage, Working Group on Data and Models

9th International Conference on Urban Drainage Modelling, Belgrade, Serbia, 4-6 September 2012

Institutional Repository

conference paper

(c) 2012 The Author(s)