Assessing Infiltration and Exfiltration on the Performance of Urban Sewer Systems
Sewer systems constitute a very significant heritage in European cities. Their structural quality and functional efficiency are key parameters to guarantee the transfer of domestic and industrial wastewater to treatment plants without infiltration nor exfiltration. Infiltration of groundwater is particularly detrimental to treatment plant efficiency, while exfiltration of wastewater can lead to groundwater contamination.
The European research project APUSS (Assessing infiltration and exfiltration on the Performance of Urban Sewer Systems) was devoted to sewer infiltration and exfiltration questions. It was structured in three main Work Areas dealing respectively with i) the development of new measurement methods based on tracer experiments and accounting for detailed uncertainty analyses, ii) the implementation of models and software tools to integrate structural and experimental data and to facilitate data display, operational management and decision-making processes and iii) the integration of economic and operational questions by means of cost estimation, economic evaluation, performance indicators and multi-criteria methods applied to investment/rehabilitation strategies.
This final report describes the objectives, methods and main results for each Work Area. References to detailed methods, protocols, reports and tools are given in this final report which will be an invaluable source of information for all those concerned with the performance of urban sewer systems.
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New measurement methods Jorg Rieckermann Oliver Kracht and Willi Gujer
Inﬁltration and exﬁltration in house connections Claude Joannis
Sediment impacts and exﬁltration J Bryan Ellis and D Michael Revitt
The exﬁltration process and the colmation layer J Bryan Ellis D Michael Revitt
Test and ﬁeld applications of methods in Italy Valentina Prigiobbe
adsorption application APUSS project AquaBase aquifer backﬁll Berkhamsted Bertrand-Krajewski Bottrop calculated calibration catchment CCTV Chapter COD load colmation layer costs CSO tank Czech Republic deﬁned deﬁnition developed difﬁcult discharge dosing drains Dresden drinking water dry weather ﬂow efﬁciency efﬂuent evaluation Exfiltration exﬁltration losses exﬁltration rates experimental experiments ﬁeld Figure ﬁrst ﬂooding ﬂow rate foul sewage Gladbeck groundwater groundwater level house connections hydraulic identiﬁed impacts Infernetto inﬁltration and exﬁltration inﬂow inﬂuence investment strategy ISBN isotopic IWA Publishing leakage manhole matrix potential measurement campaign methodology Middlesex University monitoring operation peak pipe material pollutant loads Proc Quantiﬁcation QUEST QUEST-C rainfall ratio receiving water reference peaks RERAU Rhodamine WT Rieckermann sampling sediment sewer exﬁltration sewer network sewer pipe sewer reach signiﬁcant speciﬁc sub-catchment Thames Water Torraccia tracer tracer methods uncertainty Urban Drainage Urban Sewer Systems Urban Water values Villeurbanne wastewater water level WWTP