Transport diphasic de l'oxygène en milieu poreux : approche de modélisation et de validation expérimental sur filtres plantés de roseaux à écoulement vertical | Diphasic oxygen transport in porous media: modeling approach, and vertical flow constructed wetlands experimental validation
2010
Petitjean, Anne | Wanko, A. | Forquet, N. | Mose, R.
Oxygen renewal, as a prominent phenomenon for aerobic bacteria activity, deeply impacts VFCW treatment efficiency. We introduce MIGRA, a new model able to simulate oxygen transfer in VFCW. It is based on a realistic two-phase flow module, that allows us to describe various loading sequences, and a transport module. The multi-component transport module is able to deal with convection/diffusion phenomena, inter-phase (air-water) mass exchange, and first-order kinetics. It is validated with analytical solutions and data from an experimental VFCW (column). We show the benefits of a two-phase flow modeling using a comparison with HYDRUS.
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