Installation and maintenance of flow gauging stations to assess wastewater dilution in small creeks is expensive. The method outlined in this paper provides a flexible and cheap alternative for situations with dilution factors smaller than 10 and unambiguous flow direction. It is shown that conductivity profiles from three sampling locations enable accurate identification of the dilution factor with an uncertainty of ±10–30%. Furthermore, much insight can be gained on the temporal behavior of both, the receiving water and the wastewater treatment system by combined analysis of conductivity and temperature data. In this case study the data also enabled identification and tracking down of illegal polluters.
Research Article|April 01 2009
Assessing wastewater dilution in small rivers with high resolution conductivity probes
1Swiss Federal Institute of Aquatic Science and Technology, Eawag CH-8600, Dübendorf, Switzerland E-mail: email@example.com
2The University of Queensland, Advanced Water Management Centre (AWMC), Qld 4072, Australia
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Water Sci Technol (2009) 59 (8): 1593-1601.
Christoph Ort, Hansruedi Siegrist; Assessing wastewater dilution in small rivers with high resolution conductivity probes. Water Sci Technol 1 April 2009; 59 (8): 1593–1601. doi: https://doi.org/10.2166/wst.2009.174
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