Experimental and theoretical assessment of the multi-domain flow behaviour in a waste body during leachate infiltration

Journal Article · Mon Aug 15 04:00:00 EDT 2011 · Waste Management

DOI:https://doi.org/10.1016/j.wasman.2011.03.003· OSTI ID:21578457

Tinet, A-J ^[1]; Oxarango, L ^[1]; Bayard, R; Benbelkacem, H ^[2]; Stoltz, G; Staub, M J; Gourc, J -P ^[1]

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1. Laboratoire d'etude des Transferts en Hydrologie et Environnement (LTHE), Universite de Grenoble, BP 53 38041, Grenoble Cedex 09 (France)
2. Universite de Lyon, INSA-Lyon, Laboratoire LGCIE, Bat. Carnot, 20 avenue A. Einstein, F-69621 Villeurbanne (France)

The optimisation of landfill operation is a key challenge for the upcoming years. A promising solution to improve municipal solid waste (MSW) management is the bioreactor technology. A meso-scale (around 1 m{sup 3}) experimental set-up was performed to study the effect of moisture control in low density conditions with different leachate injection operations and bioreactor monitoring including the use of a neutron probe. The moisture content distribution evolution demonstrates a multi-domain flow behaviour. A classic van Genuchten-Mualem description of the connected porosity proved insufficient to correctly describe the observed phenomena. A bimodal description of the connected porosity is proposed as solution and a connected/non-connected porosities numerical model was applied to the results. The model explains the experimental results reasonably well.

• OSTI ID: 21578457
• Journal Information: Waste Management, Journal Name: Waste Management Journal Issue: 8 Vol. 31; ISSN WAMAE2; ISSN 0956-053X
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
BIOREACTORS
DENSITY
MANAGEMENT
MOISTURE
MONITORING
NEUTRON PROBES
OPTIMIZATION
PHYSICAL PROPERTIES
POROSITY
PROBES
SANITARY LANDFILLS
SOLID WASTES
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES