Effect of spent air reusing (SAR) on maturity and greenhouse gas emissions during municipal solid waste (MSW)composting--with different pile height

摘要：

　　As spent air holding high oxygen (O2) concentration (10%-20%) and heat energy from sealed composting reactor at high temperature period,it is feasible for waste degradation by aerobic microorganisms,and promotes composting piles temperature rising in composting process based on reusing spent air.In this study,a new method of spent air reusing (SAR) was applied in composting to investigate the improvement of the compost maturity and greenhouse gas (GHG) emissions with different composting pile height.The four different trials were researched in this paper.The conventional composting trial (T0) with 2.5 m pile height composting was used as the control,and T1,T2,T3 with 2.5 m,3.0 m,3.5 m pile height composting were operated under SAR method.The results showed that the compost under SAR trials had better quality and less GHG emissions than T0.Meanwhile,the composting treatment capacity increased by 40% and total GHG emissions reduced by 25.70% CO2-equivalent per ton composting materials.This study suggested SAR as a new method not only could increase the capacity ofMSW composting,but also reduce the GHG emissions.

关键词： Municipal solid waste Spent air reusing Compost maturity Greenhouse gas Composting pile height

作者: Hongyu Zhang Chunping Li Guoxue Li Bing Zang Qingyuan Yang

作者单位: College of Resource and Environmental Science, China Agriculture University, Beijing 100193, PR Chin Beijing Building Materials Academy of Science Research/State Key Laboratory of Solid Waste Reuse for College of Resource and Environmental Science, China Agriculture University, Beijing 100193, PR Chin

会议类型: 国际会议

会议名称: The Seventh International Conference on Waste Management and Technology(第七届固体废物管理与技术国际会议(ICWMT7))

会议地点: 北京

会议语种:英文

页码: 59-69

在线出版日期: 2012-09-05（万方平台首次上网日期，不代表论文的发表时间）