深圳市玉龙坑垃圾填埋气体成分与产气规律研究

Study on LFG Generation Law and LFG Components of Yulongkeng Landfill Site in Shenzhen City

通过对现场抽气试验的数据整理及理论计算，得出了深圳市五龙坑垃圾填埋场的填埋气体成分及产气规律。结果表明，场区内填埋气体含量分别为CH4：62．1％，O2：1.1％，CO2：34．8％，其余气体：1．9％；理想条件下填埋场的产气量为188.7立方米／吨，垃圾产气率方程为Ri=21.5e-0.12i；根据产气速率方程计算了填埋场历年的产气量，结果表明填埋场目前正处于产气高峰期，整个产气过程约持续30年，填埋场才能达到稳定、无害化。

Through LFG extraction trial onsite in Shenzhen city, the rate of LFG generation andLFG component have been obtained for Yulongkeng landfill site. The results show that LFG was com-posed of CH4, O2, CO2, and other gas, the concentration of these gases were 62. 1%, 1. 1%' 34. 8 %,1. 9 % respectively. The gas output was 188. 7m3/t in ideal condition. The equation of LFG generation rate was Ri = 21. 5e-0. 12i. The calculation of LFG output per year shows that gas production is inpeak period at present. The gas production would last for about 30 years. When this processterminates, the site would be stable and harmless entirely.