通过生命周期评价(LCA)的方法,对上海市某区生活垃圾处理现状及4个不同可选处理方案的温室气体(GHG)排放量进行了分析。结果表明,当前该区生活垃圾处理系统的GHG排放总量为776.42 t CO2eq.,其中填埋、焚烧和堆肥分别占33%、39%和20%,其...通过生命周期评价(LCA)的方法,对上海市某区生活垃圾处理现状及4个不同可选处理方案的温室气体(GHG)排放量进行了分析。结果表明,当前该区生活垃圾处理系统的GHG排放总量为776.42 t CO2eq.,其中填埋、焚烧和堆肥分别占33%、39%和20%,其他处理单元仅占8%。通过4个可选方案的对比表明,采取垃圾分类收集、资源回收、厌氧消化和堆肥残渣焚烧处置等措施可有效降低该区生活垃圾处理系统的GHG排放,其中综合了上述4类措施的优化方案四的GHG减排量最高,达44%。此外,敏感性分析数据表明,生活垃圾的厌氧消化比例对GHG减排影响比较显著,因此厌氧消化可作为可生化垃圾的优先处理技术。展开更多
Solid waste is a promising renewable fuel that can substitute conventional fuel. According to the researchers, thermoconversion of solid waste such as municipal solid waste or residual household waste (RHW) is benefic...Solid waste is a promising renewable fuel that can substitute conventional fuel. According to the researchers, thermoconversion of solid waste such as municipal solid waste or residual household waste (RHW) is beneficial to society. However, due to its heterogeneity, the gasification of RHW is more complex. This review article discusses the steps that RHW must undergo before its thermoconversion and the state of the art of solid waste gasification. First, characterisation methods of RHW are surveyed. Second, the properties of RHW, the production lines of refuse derived fuel (RDF) from RHW, the influence of RDF composition and operating parameters such as equivalence ratio and temperature are reviewed. Moreover, RDF gasification products, scientific barriers and proposed solutions are evaluated. In conclusion, concerning emissions, costs and technical aspects related to each thermochemical process, it can be said that gasification is a promising technique for the recovery of RHW. However, studies on cogasification of waste and biomass on a pilot-industrial scale are still scarce and synergistic effects of this cogasification need to be clarified.展开更多
文摘通过生命周期评价(LCA)的方法,对上海市某区生活垃圾处理现状及4个不同可选处理方案的温室气体(GHG)排放量进行了分析。结果表明,当前该区生活垃圾处理系统的GHG排放总量为776.42 t CO2eq.,其中填埋、焚烧和堆肥分别占33%、39%和20%,其他处理单元仅占8%。通过4个可选方案的对比表明,采取垃圾分类收集、资源回收、厌氧消化和堆肥残渣焚烧处置等措施可有效降低该区生活垃圾处理系统的GHG排放,其中综合了上述4类措施的优化方案四的GHG减排量最高,达44%。此外,敏感性分析数据表明,生活垃圾的厌氧消化比例对GHG减排影响比较显著,因此厌氧消化可作为可生化垃圾的优先处理技术。
文摘Solid waste is a promising renewable fuel that can substitute conventional fuel. According to the researchers, thermoconversion of solid waste such as municipal solid waste or residual household waste (RHW) is beneficial to society. However, due to its heterogeneity, the gasification of RHW is more complex. This review article discusses the steps that RHW must undergo before its thermoconversion and the state of the art of solid waste gasification. First, characterisation methods of RHW are surveyed. Second, the properties of RHW, the production lines of refuse derived fuel (RDF) from RHW, the influence of RDF composition and operating parameters such as equivalence ratio and temperature are reviewed. Moreover, RDF gasification products, scientific barriers and proposed solutions are evaluated. In conclusion, concerning emissions, costs and technical aspects related to each thermochemical process, it can be said that gasification is a promising technique for the recovery of RHW. However, studies on cogasification of waste and biomass on a pilot-industrial scale are still scarce and synergistic effects of this cogasification need to be clarified.
