Measurement of hydro-thermal variation during decomposition of MSW in bioreactor landfill

摘要

Efficiency of municipal solid waste, MSW, bioreactor landfill primarily depends on the rate ofdecomposition, which can be accelerated by controlling hydro-thermal variations during thedecomposition process. Among the several techniques developed by researchers, frequencydomain reflectometery, FDR; time domain reflectometery, TDR, technique and thermocoupleshave been found to be quite useful for measuring the moisture content and temperature of the soilmass. However, suitability of these techniques for monitoring the moisture content andtemperature of the MSW in the landfill has not been explored by the earlier researchers. Withthis in view, investigations were carried out to assess the suitability and efficiency of FDR, TDRand thermocouples for continuous monitoring of the moisture content and temperature in theMSW bioreactor landfill. Pilot field and laboratory bioreactor landfills were developed fordisposal of the MSW. It has been demonstrated that FDR, TDR and thermocouples are quiteuseful for continuous monitoring of various decomposition reactions prevailing in the landfilland for controlling the hydro-thermal variations in it through scheduling of leachaterecirculation.