The environmental burdens comparision between composting and thermal hydrolysis used in the restaurant garbage recovery process
In recent years, there have been remarkable development in the recovery process of restaurant garbage in China following the active attitude of government and the announcement of several policies for effective restaurant garbage management. To evaluate the environmental impacts of restaurant garbage recovery process, Life Cycle Assessment (LCA) was used to compare two recovery processes composting and thermal hydrolysis and estimated energy consumption and pollutant emissions. The results show that the efficient process was different in each impact category, it was evaluated that composting makes greater contribution to global warming, reaching 337.7 kg CO2 eq./ kg. In contrast, thermal hydrolysis imposed more impact in ecotoxicity due to the large energy consumption. But the total environmental impacts of thermal hydrolysis is about 62.5% times compared to composting as a result of less effect on the other three categories: acidification, eutrophication, and global warming. Obviously, thermal hydrolysis is an effective recovery process with less environmental burdens.
composting thermal hydrolysis environmental burdens restaurant garbage Life Cycle Assessment
Chen Ting Jin Yiying Li Yangyang Li Huan Si Baoxin Nie Yongfeng
Department of Environmental Sciences and Engineering, Tsinghua University, Beijing 100084, China
国际会议
The 3rd International Conference on Waste Management and Technology(第三届固体废物管理与技术国际研讨会)
北京
英文
405-414
2008-11-05（万方平台首次上网日期，不代表论文的发表时间）