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Communication dans un congrès

Biofiltration for the on-site management of micropollutants in urban runoff: lessons from a field study

Abstract : The present work focuses on lessons learned from the monitoring of total and dissolved concentrations of a wide range of micropollutants (TM, PAH, BPA, AP, PAE) in a biofiltration swale (BFS) treating runoff from a suburban highway during 15 rain events over a 14 month period. This study showed the ability of biofiltration to improve runoff quality with respect to micropollutants, especially those associated with the particulate phase. However, both smaller runoff particle sizes and the formation of cracks in the filter media were associated with degraded particle retention during some events. In addition, materials commonly used in biofilter construction (asphalt, geomembranes, drains and filter fabric), were shown to be sources of BPA, AP and PAE, which led to degraded performance for these pollutants, and should thus be avoided in biofilter design wherever possible. Finally, significant overflow from the studied system limited its annual load reductions significantly, underlining the importance of good hydrologic design in pollutant load removal.
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https://hal-enpc.archives-ouvertes.fr/hal-02065497
Contributeur : Kelsey Flanagan <>
Soumis le : mardi 12 mars 2019 - 17:04:21
Dernière modification le : dimanche 25 octobre 2020 - 06:31:26
Archivage à long terme le : : jeudi 13 juin 2019 - 15:56:23

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  • HAL Id : hal-02065497, version 1

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Kelsey Flanagan, Philippe Branchu, Lila Boudahmane, Emilie Caupos, Dominique Demare, et al.. Biofiltration for the on-site management of micropollutants in urban runoff: lessons from a field study. International Sponge City Conference, Sep 2018, Xi'an, China. ⟨hal-02065497⟩

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