In situ innovative full scale instrumentation on bioreactor landfill.

Summary In order to produce more efficiently renewable energy in landfill from the municipal solid waste by biogas production and to enhance the degradation of the organic fraction of waste, landfill bioreactor using leachate recirculation is a promising management strategy. Bioreactors are based on an acceleration of in-situ waste biodegradation by reaching biochemical optimal moisture content with performing leachate injection Thus, a key need is to obtain a better understanding of leachate infiltration into the waste mass during recirculation events, but also of biodegradation process at waste deposit cell scale. During “Champs Jouault” research project, for the first time, combination of different methods of measurements is managed in the same place at field scale: Electrical Resistivity Tomography (ERT) for leachate diffusion. fiber optic lines for distributed temperature measurements for biodegradation study. Dielectric permittivity with Time domain transmission as indicator of moisture variations. Two time of sample recording are proposed: a short-monitoring to evaluate leachate flow (recirculation device) in waste mass and a long-term monitoring to study biodegradation process.