Traitement et analyse de séries chronologiques continues de ...
Traitement et analyse de séries chronologiques continues de ... Traitement et analyse de séries chronologiques continues de ...
Annexes CONCLUSION This work confirms the great interest and potential of long term continuous discharge and turbidity time series measured in sewer systems. Based on the analysis of 180 dry weather days and 239 storm events monitored in a combined sewer system, respectively in period 2007-2008 and period 2004- 2008, the main conclusions are the following ones: - Three distinct classes of dry weather days have been established, each one with specific daily discharge and turbidity profiles. - The variability within each class has been analysed and quantified. - No seasonal effect and no trend over the year have been detectable. - A method has been proposed to estimate the dry weather contributions to total storm event volumes and TSS and COD loads, accounting for the dynamics of both discharge and turbidity time series at short time step (2 minutes). The method is based on the identification of the most likely dry weather signals among a set of tested dry weather signals taken from the appropriate DWD class. - The selected signal is named the reference signal and its total uncertainty, including both measurement uncertainty and substitution uncertainty, is evaluated. The substitution uncertainty is estimated based on simulations of the method applied to measured dry weather days. - Analyses of time series, mean values and residuals indicate that the LPU is applicable to evaluate uncertainties. - For any storm event, the method allows calculating the total event TSS and COD loads, the contributions of dry weather and wet weather, and all associated uncertainties and 95 % confidence intervals. It has to be highlighted that despite the very rich and reliable data set from Ecully catchment used in this study, the results of the analysis might be different in different catchments and with different gauges. - The method will be used to calibrate storm weather quality models. ACKNOWLEDGMENTS This research was carried out within the OTHU research programme. The authors gratefully acknowledge SAFEGE for its financial support of the PhD thesis. REFERENCES Bertrand-Krajewski J. L., Barraud S., Lipeme Kouyi G., Torres A. and Lepot M. (2008). Mesurages en continu des flux polluants particulaires en réseaux d’assainissement urbains : enjeux, méthodes, exemple d’application (On-line monitoring of particulate pollutant loads in urban sewer systems : stakes, methods, example of application). La Houille Blanche, 4, 49-57. Dembélé, A., Becouze, C., Bertrand-Krajewski, J. L., Cren-Olivé, C., Barillon, B. and Coquery, M. (2009). Quantification des polluants prioritaires dans les rejets urbains de temps de pluie - Les premiers résultats du projet de recherche ESPRIT mené sur deux bassins versants (Assessment of fluxes of priority pollutants in urban wet weather discharges at the outlet of two catchments and in atmospheric fallouts. First results of the Esprit reseratch project). TSM - Techniques Sciences Méthodes, 4, 60-76. Fletcher, T.D. and Deletic, A.B. (2007). Statistical evaluation and optimisation of stormwater quality monitoring programmes. Water Science and Technology, 56(12), 1-9. Gruber, G., Winkler, S. and Pressl, A. (2005). Continuous monitoring in sewer networks an approach for quantification of pollution loads from CSOs into surface water bodies. Water Science and Technology, 52(12), 215-223. Lacour, C. (2009). Apport de la mesure en continu pour la gestion de la qualité des effluents de pluie en réseau d’assainissement (Interest of continuous monitoring for the control of water quality during wet weather in sewer systems). PhD thesis, Université Paris Est, France.
Annexes Lacour C., Joannis C. and Chebbo G. (2009). Assessment of annual pollutant loads in combined sewers from continuous turbidity measurements: sensitivity to calibration data. Water Research, 43(8), 2179-2190. Métadier, M. and Bertrand-Krajewski, J. L. (2009). From mess to mass: a methodology for calculating storm event pollution loads with their uncertainties, from continuous raw data. Proceedings of the 8th International Conference on Urban Drainage Modelling, Tokyo, Japan, 7-12 September, 8 p. Métadier, M. and Bertrand-Krajewski, J. L. (in press). Traitement de séries chronologiques de turbidité continues à court pas de temps pour l’estimation des masses de MES et de DCO rejetées en milieu urbain par temps de pluie (Use of continuous turbidity measurements for the assessment of event TSS and COD loads from urban sewer systems). La Houille Blanche, 2. Muschalla D., Schneider S., Schröter K., Gamerith V., Gruber G. (2008). Sewer modelling based on highly distributed calibration data sets and multi-objective auto-calibration schemes. Water Science and Technology, 27(10), 1547-1554. Ruban G., Joannis C. (2008). Évaluation de la précision des courbes d’étalonnage par la méthode de Monte Carlo : application à la turbidimétrie (Evaluation of calibration curve uncertainty using the Monte Carlo method: Application to turbidity measurement). Bulletin des Laboratoires des Ponts et Chaussées, 272, 33-43. Ruban, G., Joannis, C., Gromaire, M.-C., Bertrand-Krajewski, J. L. and Chebbo, G. (2008). Mesurage de la turbidité sur échantillons: application aux eaux résiduaires urbaines (Performing turbidity measurement on samples : application to urban wastewaters). TSM - Techniques Sciences Méthodes, 4, 61-74. Schilperoort, R.P.S., Dirksen, J., Langeveld, J.G. and Clemens, F.H.L.R. (2009). Assessing characteristic time and space scales of in-sewer processes by analysis of one year of continuous in-sewer monitoring data. Proceedings of the 8th International Conference on Urban Drainage Modelling, Tokyo, Japan, 7-12 September, 8 p.
- Page 358 and 359: Bibliographie Gupta K. et Saul Adri
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Annexes<br />
Lacour C., Joannis C. and Chebbo G. (2009). Assessment of annual pollutant loads in combined<br />
sewers from continuous turbidity measurements: sensitivity to calibration data. Water Research, 43(8),<br />
2179-2190.<br />
Métadier, M. and Bertrand-Krajewski, J. L. (2009). From mess to mass: a m<strong>et</strong>hodology for calculating<br />
storm event pollution loads with their uncertainties, from continuous raw data. Proceedings of the 8th<br />
International Conference on Urban Drainage Mo<strong>de</strong>lling, Tokyo, Japan, 7-12 September, 8 p.<br />
Métadier, M. and Bertrand-Krajewski, J. L. (in press). <strong>Traitement</strong> <strong>de</strong> <strong>séries</strong> <strong>chronologiques</strong> <strong>de</strong> turbidité<br />
<strong>continues</strong> à court pas <strong>de</strong> temps pour l’estimation <strong>de</strong>s masses <strong>de</strong> MES <strong>et</strong> <strong>de</strong> DCO rej<strong>et</strong>ées en milieu<br />
urbain par temps <strong>de</strong> pluie (Use of continuous turbidity measurements for the assessment of event TSS<br />
and COD loads from urban sewer systems). La Houille Blanche, 2.<br />
Muschalla D., Schnei<strong>de</strong>r S., Schröter K., Gamerith V., Gruber G. (2008). Sewer mo<strong>de</strong>lling based on<br />
highly distributed calibration data s<strong>et</strong>s and multi-objective auto-calibration schemes. Water Science<br />
and Technology, 27(10), 1547-1554.<br />
Ruban G., Joannis C. (2008). Évaluation <strong>de</strong> la précision <strong>de</strong>s courbes d’étalonnage par la métho<strong>de</strong> <strong>de</strong><br />
Monte Carlo : application à la turbidimétrie (Evaluation of calibration curve uncertainty using the<br />
Monte Carlo m<strong>et</strong>hod: Application to turbidity measurement). Bull<strong>et</strong>in <strong>de</strong>s Laboratoires <strong>de</strong>s Ponts <strong>et</strong><br />
Chaussées, 272, 33-43.<br />
Ruban, G., Joannis, C., Gromaire, M.-C., Bertrand-Krajewski, J. L. and Chebbo, G. (2008). Mesurage<br />
<strong>de</strong> la turbidité sur échantillons: application aux eaux résiduaires urbaines (Performing turbidity<br />
measurement on samples : application to urban wastewaters). TSM - Techniques Sciences Métho<strong>de</strong>s, 4,<br />
61-74.<br />
Schilperoort, R.P.S., Dirksen, J., Langeveld, J.G. and Clemens, F.H.L.R. (2009). Assessing characteristic time and<br />
space scales of in-sewer processes by analysis of one year of continuous in-sewer monitoring data. Proceedings of<br />
the 8th International Conference on Urban Drainage Mo<strong>de</strong>lling, Tokyo, Japan, 7-12 September, 8 p.
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