Title: Stable isotopes of water as a natural tracer for infiltration into urban sewer systems 
Resource Type: document --> technical publication --> proceedings / conference paper(s) 
Country: EU Projects 
Year of publication: 2003 
Availability: Kracht O., Gresch M., de Bénedittis J., Prigiobbe V., Gujer W. Stable isotopes of water as a natural tracer for infiltration into urban sewer systems, Geophysical Research Abstracts, Vol. 5, 07852, 2003, 2p. 
Author 1/Producer: Kracht O. 
Other Authors/Producers: Gresch M., de Bénedittis J., Prigiobbe V., Gujer W. 
Author / Producer Type: EC Project 
Report / download web link (=direct link): http://www.insa-lyon.fr/Laboratoires/URGC-HU/apuss/nrl_011_s ...  
Format (e.g. PDF): PDF 
EUGRIS Keyword(s): Water resources and their management -->Water resources and their management Overview
 
Short description: An adequate understanding of the hydraulic interaction between leaky sewers and groundwater is essential for the sustainable management of both sewer systems and aquifers in urbanized areas. Undesirable infiltration of groundwater into sewers can contribute over 50% of the total discharge and is detrimental to treatment plant effi- ciency. On the other hand, in many European cities groundwater surface levels seem to be particularly controlled by the drainage effect of permeable sewer systems. However, nowadays methods for the quantification of these exchange processes are still subject to considerable uncertainties due to their underlying assumptions. The frequently used assumption that the night time minimum in the diurnal wastewater hydrograph is equal to the 'parasitic discharge' has to be reconsidered to today’s patterns of human life as well as to the long residence time of wastewater in the sewer networks of modern cities. 
Link to Project(s): APUSS Assessing infiltration and exfiltration on the performance of urban sewer systems
 
Submitted By: Dr Stefan Gödeke WhoDoesWhat?      Last update: 14/02/2006