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Spatial variability of the characteristics of combined wet weather pollutant loads in Paris.

Abstract : An on-site observatory of urban pollutant loads in combined sewers has been created in Paris in order to investigate wet weather pollutant loads at different spatial scales. This observatory is composed of six urban catchments, covering areas from 41 to 2581ha. For a wide range of parameters including suspended solids (SS), volatile suspended solids (VSS), chemical oxygen demand (COD), biochemical oxygen demand (BOD5), total organic carbon (TOC), total Kjeldahl nitrogen (TKN), metals (Cd, Cu, Pb, Zn), aliphatic hydrocarbons and polycyclic aromatic hydrocarbons (AHs and PAHs), this article serves to evaluate the potential scale effect on wet weather flow (WWF) quality. Although the extensive data set compiled herein has emphasized the high variability in WWF quality from one rain event to the next, no scale effect could be observed for a given rain event on pollutant concentrations, distributions between dissolved and particulate phases, pollutant contents and loads. Such results are of prime importance since they suggest (i) no spatial scale influence on WWF quality for the considered catchments and (ii) similar dominant sources and transfer processes at the various spatial scales.
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https://hal-enpc.archives-ouvertes.fr/hal-00676417
Contributeur : Régis Moilleron <>
Soumis le : lundi 5 mars 2012 - 11:57:45
Dernière modification le : samedi 24 octobre 2020 - 14:32:04

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Mounira Kafi-Benyahia, Johnny Gasperi, R. Moilleron, Marie-Christine Gromaire, Ghassan Chebbo. Spatial variability of the characteristics of combined wet weather pollutant loads in Paris.. Water Research, IWA Publishing, 2008, 42 (3), pp.539-49. ⟨10.1016/j.watres.2007.08.008⟩. ⟨hal-00676417⟩

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