摘要
城市生活垃圾和污水污泥是重要的城市固体废弃物,对环境质量和人体健康均造成重要影响。由于组成中可燃物比例高,对它们的能源化处置研究成为热点。本文系统应用了一种可持续的环境管理工具——生命周期评价软件Simapro,采用Impact 2002+和ReCiPe Endpoint 2016两种生命周期影响评价方法测算了垃圾和污水污泥单独焚烧的线性加和与垃圾、污水污泥混合焚烧两种处置方案的生命周期环境影响,揭示不同处置方案下的环境负荷,探究两种处置方案的优劣;同时,分析这两种生命周期影响评价方法的不确定性。研究结果表明:(1)城市生活垃圾和污水污泥的混合燃烧方案在化石能源消耗、气候变化和人体健康方面的有益影响均明显高于单独燃烧方案,混合燃烧方案不仅缓解能源压力,同时降低气候和健康压力;(2)对于本文方案,Impact 2002+方法的中间点影响类别和终点损害类别评价结果都比ReCiPe Endpoint 2016方法更能突出混合燃烧方案的环境影响优势,但ReCiPe Endpoint 2016方法的不确定性更小。上述结论可为垃圾和污水污泥能源化的全生命周期环境影响评价方法的选取提供参考和依据。
Municipal solid waste(MSW) and sewage sludge(SS) are important solid wastes of cities, which cause severe impacts on both environmental quality and human health. Due to the high proportion of combustible materials in their composition, research on their energy-based disposal has become a hot topic. In this study, a sustainable environmental management tool—life cycle assessment software Simapro was applied. The Impact 2002 + and ReCiPe Endpoint 2016methods were used to calculate the life cycle environmental impacts of simple summation and mixed incineration of MSW and SS. The advantages and disadvantages of the two treatment scenarios were explored. At the same time, the uncertainties of these two life cycle impact assessment methods for assessing municipal solid waste and sludge treatment were compared. The results show that:(1) The combined MSW and SS combustion scenario has higher beneficial effects on resource consumption and human health than the individual combustion solution;(2) For this scenario, both the midpoint impact category and the endpoint damage category evaluation results of the Impact 2002 + method are stronger than the ReCiPe Endpoint 2016 method in highlighting the combined combustion scheme, but the uncertainty of the latter is smaller. These conclusions provide a basis for the selection of the whole life cycle environmental impact evaluation methods for MSW and SS.
作者
张智慧
王媛
柴立和
李丽萍
李姣
朱荣杰
ZHANG Zhihui;WANG Yuan;CHAI Lihe;LI Liping;LI Jiao;ZHU Rongjie(School of Environmental Science and Engineering,Tianjin University,Tianjin 300350,China;Ecological Construction Investment Corporation of China Xiong’an Group,Baoding 071700,China)
出处
《资源科学》
CSSCI
CSCD
北大核心
2022年第4期860-870,共11页
Resources Science
基金
国家自然科学基金项目(41871211)
科技部政府间国际科技创新合作重点专项(2018YFE0106400)
天津市生态环境治理科技重大专项(18ZXSZSF00120)。
关键词
生命周期影响评价
城市生活垃圾
污水污泥
垃圾焚烧
能源化
life cycle impact assessment
municipal solid waste
sewage sludge
waste incineration
energy-based disposal
