Spatio-temporal variation of landfill gas in pilot-scale semi-aerobic and anaerobic landfills over 5 years
Xiaohui Wu
,
Bo Yue
,
Qifei Huang
,
Qi Wang
,
Ye Lin
,
Wei Zhang
,
Zhuoyi Yan
DOI:10.1016/j.jes.2016.09.015
Received June 29, 2016,Revised September 19, 2016, Accepted September 23, 2016, Available online November 06, 2016
Volume 29,2017,Pages 288-297
Variation of CH4, CO2, and O2 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 CH4 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 CH4 concentration between the semi-aerobic and anaerobic landfills. The average concentration of CH4 and CO2 in the anaerobic landfill was always higher than that in the semi-aerobic landfill, while the O2 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.
