根据的指导,结合生命周期评价技术方法和LandGEM模型,对苏州市生活垃圾填埋和焚烧处理的生命周期过程进行了碳足迹核查.详细列出了垃圾处理过程中可能的温室气体排放源,计算各排放源的电耗或能耗,并通过与温室气体排放系数相乘最终转化为苏州市生活垃圾处理温室气体排放量.结果表明:苏州市填埋处理1 t生活垃圾整个生命周期过程中温室气体的排放量(以CO2当量计)为1 942.47 kg,焚烧处理为-180.87 kg.按照目前苏州市生活垃圾处理权重进行分配,可得苏州市处理1 t生活垃圾整个生命周期过程中温室气体的排放量(以CO2当量计)为880.80 kg.在整个核查过程中,考虑了在填埋和焚烧处理时发电对温室气体带来的减量效应.%Based on the “PAS2050 Standards” guidance combined with life cycle assessment methodologies and LandGEM models,the carbon footprint of the whole life cycle of landfill and incineration for household solid waste in Suzhou were calculated. Every possible source of greenhouse gas emissions from household solid waste disposal was listed in detail, and electricity consumption and other energy consumption from individual sources were calculated. They were then converted to CO2-equivalent greenhouse gas emissions by multiplying by greenhouse gas emissions coefficients. It was concluded that greenhouse gas emissions in CO2equivalent of one ton of household solid waste in Suzhou throughout the life cycle is 1942.47 kg by landfill and is - 180. 87 kg by incineration. Calculated with the current solid waste disposal ratio, greenhouse gas emissions in CO2-equivalent of one ton of solid waste in Suzhou throughout the life cycle is 880. 80 kg. The reductions of CO2 emissions from electricity generation in disposal of solid waste were also taken into account.
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