生活垃圾综合处理模式生命周期评价

LIFE CYCLE ASSESSMENT OF COMPREHENSIVE TREATMENT OF DOMESTIC WASTES

为了评价和筛选生活垃圾综合处理模式,采用生命周期模型对"分选+焚烧+填埋"、"分选+焚烧+填埋+堆肥"和"分类+焚烧+生物"3种处理模式在环境、经济等方面进行研究。结果表明:3种处理模式的环境影响潜力分别为5.92×10-2、9.11×10-2和5.09×10-2,单位处理成本为24.88、31.59和11.73元/(人.a)。经过综合评估"分类+焚烧+生物"处理模式具有明显优势。

Different comprehensive treatment technologies for wastes （separation ＋ incineration ＋ landfill, separation ＋ incineration ＋ landfill ＋ compost and classified collection ＋ incineration ＋ biological treatment） were evaluated and compared by using the life cycle assessment methodology. The result shows that the potantial environmental effect of comprehensive treatment is respectively 5.92 ×10^-2, 9. 11×10^-2 and 5.09 ×10^-2, and the treatment cost is 24.88 RMB/（p·a）, 31.59 RMB/（p·a）, and 11.73 RMB/（p·a）. The third comprehensive treatment technology is better than others in environmental and economic benefits.