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Water Practice & Technology © CSIRO 2006 |
doi10.2166/wpt.2006.020
Practical aspects, experiences and strategies by using
UV/VIS sensors for long-term sewer monitoring
G. Gruber 1, J.-L. Bertrand-Krajewski 2, J. De Beneditis 2, M. Hochedlinger 1, W. Lettl 3
1Institute of Urban Water Management and Landscape Water Engineering,
Graz University of Technology, Stremayrgasse 10/I, A-8010 Graz, Austria
2URGC, INSA de Lyon, 34 avenue des Arts, 69621 Villeurbanne cedex, France
3s::can Messtechnik GmbH, Herminengasse 10, A-1020 Vienna, Austria (www.s-can.at)
ABSTRACT
An explosion-proof UV/VIS sensor has been available even in sewer systems for some years for simultaneous measurement of CODeq, filtered CODeq, TSSeq and nitrateeq. This sensor allows in-situ real-time measurements with no sampling, no sample preparation and no reagents. Three case studies are presented in this paper using this UV/VIS sensor for long-term sewer monitoring issues whereby two different installation strategies are applied. The pros and cons of both different installation solutions are compared and different calibration results during dry and wet weather conditions and long-term operational sewer monitoring experiences are given in this paper.
Keywords: sewer process, pollutant transport, on-line monitoring, sewer monitoring, data collection, UV/VIS spectrometer, CSO control
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