Chiemchaisri Chart, Visvanathan Chettiyappan
Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, Bangkok, Thailand.
J Air Waste Manag Assoc. 2008 May;58(5):629-35. doi: 10.3155/1047-3289.58.5.629.
Open dumping and landfilling are the prevalent solid waste disposal practices in Thailand. Surveys on the disposal sites revealed the presence of 95 landfills and 330 open dumps. Methane emission potential at these sites was estimated by three methods. Results of the Intergovernmental Panel on Climate Change (IPCC) method, Landfill Gas Emission model (LandGEM), and closed flux chamber technique were compared. The methane emission potential of 366 Gg/yr using the IPCC method was higher than the estimations of the LandGEM and closed flux chamber method of 115 Gg/yr and 103 Gg/yr, respectively. An understanding of the methane emission potential initiated the analysis of upgrading the open dumps into landfills, adding landfills to meet the future needs and utilization of landfill gases. Upgrading the open dumps to landfills increased the methane emission rates and their utilization potential. Approximately 20 additional landfills may be required to meet future demands. Landfill gas (LFG) utilization appears to be feasible in the large-scale landfills.
露天倾倒和填埋是泰国普遍采用的固体废物处理方式。对处理场地的调查发现有95个垃圾填埋场和330个露天垃圾场。通过三种方法估算了这些场地的甲烷排放潜力。对政府间气候变化专门委员会（IPCC）方法、垃圾填埋气排放模型（LandGEM）和封闭式通量室技术的结果进行了比较。采用IPCC方法得出的甲烷排放潜力为每年366Gg，高于LandGEM方法估算的每年115Gg和封闭式通量室方法估算的每年103Gg。对甲烷排放潜力的了解促使人们对将露天垃圾场升级为垃圾填埋场、增加垃圾填埋场以满足未来需求以及利用垃圾填埋气进行分析。将露天垃圾场升级为垃圾填埋场提高了甲烷排放率及其利用潜力。可能需要额外增加约20个垃圾填埋场来满足未来需求。垃圾填埋气（LFG）的利用在大型垃圾填埋场似乎是可行的。
