Comparison between controlled landfill reactor and conditioned landfill bioreactor  

作　　者：LUOFeng CHENWan-zhi SONGFu-zhong LIXiao-peng ZHANGGuo-qing 

机构地区：[1]CollegeofResourceandEnvironmentalScience,ChongqingUniversity,Chongqing400044,China [2]ChongqingEnvironmentalProtectionBureau,Chongqing400010,China [3]ChongqingConstructionCommittee,Chongqing400010,China

出　　处：《Journal of Environmental Sciences》2004年第5期874-880,共7页环境科学学报（英文版）

基　　金：ChongqingEnvironmentalProtectionBureauofChina(No.2 0 0 2 1 9)

摘　　要：Bioreactor landfills allow a more active landfill management that recognizes the biological, chemical and physical processes involved in a landfill environment. The laboratory-scale simulators of landfill reactors treating municipal solid wastes were studied, the effect of solid waste size, leachate recirculation, nutrient balance, pH value, moisture content and temperature on the rate of municipal solid waste(MSW) biodegradation were determined, and it indicated the optimum pH value, moisture content and temperature decomposing MSW. The results of waste biodegradation were compared with that of the leachate-recirculated landfill simulator and conservative sanitary landfill simulator. In the control experiment the antitheses of a decreasing trend of the organic load, measured as biological oxygen demand and chemical oxygen demand, was shown. An obvious enhancement of effective disposal from conservative sanitary landfill(CSL) simulator, to the leachate-recirculated landfill(LRL) simulator and to the conditioned bioreactor landfill(CBL) simulator would be noted, through displaying the compared results of solid waste settlement, heavy metal concentration in leachate, methane production rate, biogas composition, BOD and COD as well as their ratio.Bioreactor landfills allow a more active landfill management that recognizes the biological, chemical and physical processes involved in a landfill environment. The laboratory-scale simulators of landfill reactors treating municipal solid wastes were studied, the effect of solid waste size, leachate recirculation, nutrient balance, pH value, moisture content and temperature on the rate of municipal solid waste(MSW) biodegradation were determined, and it indicated the optimum pH value, moisture content and temperature decomposing MSW. The results of waste biodegradation were compared with that of the leachate-recirculated landfill simulator and conservative sanitary landfill simulator. In the control experiment the antitheses of a decreasing trend of the organic load, measured as biological oxygen demand and chemical oxygen demand, was shown. An obvious enhancement of effective disposal from conservative sanitary landfill(CSL) simulator, to the leachate-recirculated landfill(LRL) simulator and to the conditioned bioreactor landfill(CBL) simulator would be noted, through displaying the compared results of solid waste settlement, heavy metal concentration in leachate, methane production rate, biogas composition, BOD and COD as well as their ratio.

关 键 词：landfill bioreactor METHANOGENESIS methane production municipal solid waste leachate recirculation biodegradation of solid waste specific methanogenic activity(SMA) 

分 类 号：X705[环境科学与工程—环境工程]