| Title: |
Measurement of infiltration rates in urban sewer systems by use of oxygen isotopes
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| Resource Type: |
document --> technical publication --> proceedings / conference paper(s)
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| Country: |
EU Projects
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| Year of publication: |
2004 |
| Availability: |
De Bénédittis J., Bertrand-Krajewski J.-L. Measurement of infiltration rates in urban sewer systems by use of oxygen isotopes, 4th International conference on 'Sewer Processes and Networks' proceedings, Madeira, Portugal, 22-24 November 2004, 8p.
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| Author 1/Producer: |
De Bénédittis J.
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| Other Authors/Producers: |
Bertrand-Krajewski J.-L.
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| Author / Producer Type: |
EC Project
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| Format (e.g. PDF): |
PDF
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EUGRIS Keyword(s): |
Water resources and their management -->Water resources and their management Overview
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| Short description: |
The paper presents the principle of a method to measure infiltration rates in sewer systems
based on the use of oxygen isotopes and its application in Lyon (France). In the urban area of
Lyon, significant differences in δ 18O that can reach 3 ‰ are observed between the oxygen
isotopic compositions of groundwater originating from Rhone, Saone and from their
associated alluvial aquifers. Drinking water supplying Lyon results mainly from pumping in
the Rhone alluvial aquifer. Therefore, in some areas, the difference of isotopic composition
between wastewater resulting from the consumption of drinking water and local groundwater
can be used to measure infiltration in sewer system. The application in the catchment of
Ecully shows that the infiltration flow rate presents strong fluctuations at hourly scale: it
varies between 15 and 40 m3/h. This variability could be explained by non constant
discharges of pumping and by variations of the water level in the sewer.
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Submitted By:
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Dr Stefan Gödeke WhoDoesWhat?
Last update: 14/02/2006
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