Degradation of Refuse in Hybrid Bioreactor Landfill  

作　　者：YAN LONG YU-YANG LONG HAI-CHUN LIU AND DONG-SHENG SHEN 

机构地区：[1]Department of Environmental Engineering, Zhejiang University, Hangzhou 310029, Zhejiang, China, [2]Department of Environmental Engineering, Jinan University, Guangzhou 510632, Guangdong, China [3]Yangzhou Vocational College of Environment and Resources, Yangzhou 225127, Jian gsu, China

出　　处：《Biomedical and Environmental Sciences》2009年第4期303-310,共8页生物医学与环境科学（英文版）

基　　金：supported by the National Natural Science Foundation of China (No. 50478083);the Key Project of Science and Technology Plan of Zhejiang Province (No. 2006C23071);the Key Project of Science and Technology Plan of Hangzhou City (No.20061123B09)

摘　　要：Objective To explore the process of refuse decomposition in hybrid bioreactor landfill. Methods The bioreactor landfill was operated in sequencing of facultative-anaerobic and aerobic conditions with leachate recirculation, pH, COD, and ammonia in the leachate and pH, biodegradable organic matter （BDM）, and cation exchange capacity （CEC） in refuse were detected. Results CEC increased gradually with the degradation of refuse, which was negatively correlated with BDM. COD and ammonia in the leachate was declined to 399.2 mg L^-1 and 20.6 mg N L^-1, respectively, during the 357-day operation. The respective concentrations of ammonia and COD were below the second and the third levels of current discharge standards in China. Conclusion The refuse is relatively stable at the end of hybrid bioreactor landfill operation. Most of the readily biodegradable organic matter is mineralized in the initial phase of refuse degradation, whereas the hard-biodegradable organic matter is mainly humidified in the maturity phase of refuse degradation.Objective To explore the process of refuse decomposition in hybrid bioreactor landfill. Methods The bioreactor landfill was operated in sequencing of facultative-anaerobic and aerobic conditions with leachate recirculation, pH, COD, and ammonia in the leachate and pH, biodegradable organic matter （BDM）, and cation exchange capacity （CEC） in refuse were detected. Results CEC increased gradually with the degradation of refuse, which was negatively correlated with BDM. COD and ammonia in the leachate was declined to 399.2 mg L^-1 and 20.6 mg N L^-1, respectively, during the 357-day operation. The respective concentrations of ammonia and COD were below the second and the third levels of current discharge standards in China. Conclusion The refuse is relatively stable at the end of hybrid bioreactor landfill operation. Most of the readily biodegradable organic matter is mineralized in the initial phase of refuse degradation, whereas the hard-biodegradable organic matter is mainly humidified in the maturity phase of refuse degradation.

关 键 词：REFUSE DEGRADATION Hybrid bioreactor landfill 

分 类 号：X705[环境科学与工程—环境工程]