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Integrated modelling of river Zenne using OpenMI

par Shrestha, N. K.;Leta, O. T.;De Fraine, B.;Van Griensven, T.;Garcia Armisen, Tamara ;Ouattara, Koffi Nouho ;Servais, Pierre ;Bauwens, Willy
Editeur scientifique Hinkelmann, R.;Nasermoaddeli, M. H.;Liong, S. Y.;Savic, D.;Fröhle, P.;Daemrich, K. F.
Référence International Conference on Hydroinformatics HIC 2012(14th -18th July, 2012: Hamburg, Germany), Proceedings of the 10th International Conference on Hydroinformatics HIC 2012, IWA
Publication Publié, 2012

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Résumé :

Despite large investments made for the management of theBrussels’ sewer systems, the river Zenne still receives high loads of pollutants, especially considering the small size of thisreceiving water. An interuniversity, multidisciplinary research project‘Good Ecological Statusof theriver Zenne (GESZ)’was therefore launched to evaluate the effects of the wastewatermanagement plans in the river basin on the ecological functioning of the river. Hereto, differentwater quantity and quality processes were considered: the hydrology in the river basin, thehydraulics in the river and in the sewers, erosion and sediment transport and faecal bacteriatransport and decay. To this purpose, existing models are being used (the SWAT for thehydrology and the erosion, the SWMM for the hydraulics) and new simulators have beendeveloped for the sediment transport and for the faecal bacteria. For the integration of thesemodels and to allow a flexible selection of the different models, it was decided to opt for theOpenMI platform. This paper discusses the early results of this integrated modelling of the riverZenne using OpenMI, considering the hydrologic model, the hydraulic model, the sedimenttransport model and a model describing the faecal bacteria dynamics. Results are presented for Escherichia coli( E.coli), taken as an indicator bacteria. The results indicate that the interactionsbetween the sediments and the bacteria should be taken into account by the modelling.