Effect of landfill conditions on the characteristics of the production and stabilization of municipal solid waste landfill

The landfill conditions affect the production and stabilization of municipal solid waste(MSW) landfills.Experiments used an aerobic landfill bioreactor,anaerobic landfill bioreactor,semi-aerobic landfill reactor and conventional anaerobic landfill reactor.Critical parameters,such as the solid mass(VS,BDM,cellulose and C/L),leachate(CODcr,BOD5,B/C,TN,NH3-N) and landfill gas(CH4 and CO2),were varied to evaluate the production and stabilization of MSW for different conditions.The results show that the bioreactor landfill accelerates degradation and enhances stabilization of the MSW.In aerobic landfill bioreactor,the degradation rates of VS,BDM and cellulose were 57.5%,71.4% and 93%.The stabilization time was shortened to 60% of that with the anaerobic landfill bioreactor.Leachate recirculation also accelerates degradation of the organic compounds in the leachate.The removal rates of CODcr and BOD5 were 96% and 99% after 189 days in the aerobic landfill bioreactor or after 596 days in the anaerobic landfill bioreactor.The removal rates of TN and NH3-N were 96% and 99% in the aerobic landfill bioreactor.The anaerobic landfill bioreactor enhanced the methane production also.The greenhouse gases were greatly reduced in the aerobic landfill bioreactor and the semi-aerobic landfill reactor.