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运用生命周期分析(LCA)方法,对广州市生活垃圾高温有氧静态堆肥系统进行分析,计算出全生命周期的资源消耗和环境影响潜值,同时与垃圾焚烧典型工艺的LCA数据进行对比。结果表明,堆肥处理的环境影响负荷为0.023PET90,资源消耗系数为9.238mPET90。环境影响类型中光化学臭氧合成造成的影响最大,占环境总影响的43.8%。与焚烧处理方式相比,高温有氧静态堆肥的环境总影响较小,环境影响负荷相比于焚烧减少20.3%,在降低酸化的影响方面有较为显著的作用。
The life cycle analysis (LCA) method was used to analyze the high-temperature aerobic composting system of municipal solid waste in Guangzhou. The resource consumption and environmental impact potential of the whole life cycle were calculated and compared with the LCA data of a typical waste incineration process. The results showed that the environmental impact load of composting treatment was 0.023PET90, and the resource consumption coefficient was 9.238mPET90. The type of environmental impact of photochemical ozone synthesis caused the greatest impact, accounting for 43.8% of the total environmental impact. Compared with the incineration treatment, the static environmental impact of high temperature aerobic composting is less, and the environmental impact load is reduced by 20.3% compared with that of incineration, which plays a significant role in reducing the impact of acidification.