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《Guangdong Agricultural Sciences》 2012-01
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Distribution rule of landfill gas in simulated semi-aerobic landfill

YANG Qiao-yan1,TIAN LI-ping2,HUANG Fei-yun1(1.School of Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 610031,China; 2.College of Maths Southwest Jiaotong University,Chengdu 610031,China)  
The changing situation of CH4 and CO2 among the landfill gas in different regions and different times was studied with the use of laboratory tests.According to the airway from different parts of the temperature and pH value of leachate trends,the factors aligned the aerobic landfill the impact of landfill gas were analyzed.The results showed that semi-aerobic landfill in the landfill gas in different regions contain a certain amount of CH4,but the proportion was significantly smaller than the anaerobic landfill,generally no more than 30% of the maximum;landfill gas CH4 and CO2 content with a lower upper features,stable lower proportion of CH4 landfill gas maintained at 20% to 30%,while the upper CH4 concentration was always less than 5%.Farther away from the airway,CH4 concentration was higher.The situation that the pH value was greater than 6.4 and 7.1 would help the production of CO2 and CH4,respectively,the maximum percentage content of 29% and 32%.
【CateGory Index】: X705
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