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Clément R., Oxarango L., Descloitres Marc. Contribution of 3-D time-lapse ERT to the study of leachate recirculation in a landfill. Waste Management, 2011, 31 (3), p. 457-467. ISSN 0956-053X
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doi:10.1016/j.wasman.2010.09.005
| Titre | Contribution of 3-D time-lapse ERT to the study of leachate recirculation in a landfill |
| Année de publication | 2011 |
| Type de document | Article référencé dans le Web of Science WOS:000287833800009 |
| Auteurs | Clément R., Oxarango L., Descloitres Marc. |
| Source | Waste Management, 2011, 31 (3), p. 457-467. ISSN 0956-053X |
| Résumé | Leachate recirculation is a key process in the operation of municipal waste landfills as bioreactors. It aims at increasing the moisture content to optimise the biodegradation. Because waste is a very heterogeneous and anisotropic porous media, the geometry of the leachate plume recirculation is difficult to delineate from the surface at the scale of the bioreactor site. In this study, 3-D time-lapse electrical resistivity tomography (ERT) was used to obtain useful information for understanding leachate recirculation hydrodynamics. The ERT inversion methodology and the electrode arrays were optimised using numerical modelling simulating a 3-D leachate injection scenario. Time-lapse ERT was subsequently applied at the field scale during an experimental injection. We compared ERT images with injected volumes to evaluate the sensitivity of time-lapse ERT to delineate the plume migration. The results show that time-lapse ERT can accomplish the following: (i) accurately locate the injection plume, delineating its depth and lateral extension; (ii) be used to estimate some hydraulic properties of waste. |
| Plan de classement | 062 ; 021 |
| Localisation | Fonds IRD [F B010053364] |
| Identifiant IRD | fdi:010053364 |
| Lien permanent | http://www.documentation.ird.fr/hor/fdi:010053364 |
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