An emergy-LCA analysis of municipal solid waste management
An emergy-LCA analysis of municipal solid waste management
复制标题
城市固体废物管理的能值生命周期评价分析
DOI：
10.1016/j.resconrec.2016.12.003
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发表时间：
2017
影响因子：
13.2
通讯作者：
Ulgiati Sergio
中科院分区：
文献类型：
--
作者：
Liu Gengyuan;Hao Yan;Dong Liang;Yang Zhifeng;Zhang Yan;Ulgiati Sergio
废物管理是一种具体做法，旨在减少废物对环境的影响，增加材料和能源回收。北京市固体废物收集和处理系统在采用能够实现更好处理效果的新技术方面进展缓慢。目前对不同处理技术进行生态-经济评价的目的是从投资中获得最大的实际利益，并确保根据不同的源头分类收集和运输率将废物流对环境的影响降到最低。对北京市垃圾分类收运、卫生填埋、流化床焚烧、堆肥等4种处理方式进行了比较。结果表明，随着源头分离率（SSR）的增加，回收材料和分类废物的产量也随之增加。高SSR和分离运输率（STR）可以使回收更有益：但是，如果采用一种以上的方法，就有可能以最小化成本和损失的方式组织不同的步骤。本研究应用能值-生命周期评价方法，评估输入与输出流程的环境影响，并提出流程改善建议。该集成提供了一种定量和定性评估成本和效益的方法，以实现有意识和健全的城市固体废物管理。
Waste management is a specific practice aimed at reducing the effects of waste materials on the environment and increasing material and energy recovery. The Beijing Municipal Solid Waste Collection and Treatment System has been slow to adopt new technologies capable to enable better treatment results. The aim of the present ecological-economic evaluation of different treatment technologies is to achieve the maximum practical benefits from investments and to ensure the minimum environmental impacts of waste flows based on variable source-separated collection and transportation rates. This paper compared four garbage treatment systems, including separate collection and transportation, sanitary landfills systems, fluidized bed incineration system, and the composting system in Beijing. Results show that as far as the Source Separation Rate (SSR) increased, the yield of recycled materials and sorted waste also rose. High SSR and Separated Transportation Rate (STR) could make recycling more beneficial: however, if more than one approach is applied, it is possible to organize the different steps in a way that minimizes costs and losses. A joint emergy-LCA method is applied in this study to assess the environmental impact of input and output flows and suggest process improvement. The integration offers a way to quantitatively and qualitatively assess costs and benefits, for aware and sound MSW management.