Title: Design of tests for quantifying sewer leakages by the QUEST-C method 
Resource Type: document --> technical publication --> proceedings / conference paper(s) 
Country: EU Projects 
Year of publication: 2004 
Availability: 6th International Conference on Urban Drainage Modelling proceedings, Dresden, Germany, 15-17 September 2004 
Author 1/Producer: Prigiobbe, V. 
Other Authors/Producers: Giulianelli, M. 
Author / Producer Type: EC Project 
Report / download web link (=direct link): http://www.insa-lyon.fr/Laboratoires/URGC-HU/apuss/nrl_037_d ...  
Format (e.g. PDF): PDF 
EUGRIS Keyword(s): Water and sanitation-->Water and sanitation
Water and sanitation-->Water and sanitation Overview
Water and sanitation-->Water supply
Water resources and their management -->Water resources and their management Overview
 
Short description: The structural state of sewer pipes is a crucial problem in urban areas because infiltrations and exfiltrations can occur and consequently contaminate the surface and deep water bodies, respectively. In this paper the application of a new method to quantify the sewer leakages (called exfiltrations) with tracers during dry weather is discussed. This method, called QUEST-C (Quantification of Exfiltration from Sewers with the help of Tracers-Continuous Dosing), developed by EAWAG (CH) within the European project APUSS, allows to estimate the exfiltrations by a mass balance of chemical tracers dosed continuously in a wastewater stream of operating sewers. 
Long description: In the paper, we sum up our experience from a number of field experiments in order to discuss the application of the method in the field, critically: (i) planning of the experiments; (ii) the reliability of the obtained results; (iii) the overall applicability of the method in an urban area. Finally, some findings with regard to the practical application and recommendations are presented for the future development of the method. 
Link to Project(s): APUSS Assessing infiltration and exfiltration on the performance of urban sewer systems
 
Submitted By: Dr Stefan Gödeke WhoDoesWhat?      Last update: 01/07/2007