1. Spatio-temporal variation of landfill gas in pilot-scale semi-aerobic and anaerobic landfills over 5 years.
- Author
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Wu, Xiaohui, Yue, Bo, Huang, Qifei, Wang, Qi, Lin, Ye, Zhang, Wei, and Yan, Zhuoyi
- Subjects
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ANAEROBIC digestion , *LANDFILL gases , *SOLID waste , *CARBON dioxide , *SEWAGE sludge digestion - Abstract
Variation of CH 4 , CO 2 , and O 2 concentrations in layers of different depths in semi-aerobic and anaerobic landfills was analyzed over a period of 5 years. The results showed that most of the municipal solid waste became basically stable after 5 years of landfill disposal. In the upper and middle layer, the concentration of CH 4 in the semi-aerobic landfill was significantly lower than that in the anaerobic landfill in different landfill periods, while in the lower layer, there was little difference in the CH 4 concentration between the semi-aerobic and anaerobic landfills. The average concentration of CH 4 and CO 2 in the anaerobic landfill was always higher than that in the semi-aerobic landfill, while the O 2 concentration showed an opposite variation in different landfill periods. This was related to the aerobic reaction of landfill waste around the perforated pipe in the semi-aerobic landfill, which inhibited effective landfill gas generation. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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