基于CALMIM程序的典型填埋场甲烷释放规律分析

发布时间：2019-02-16 09:19

【摘要】：运用CALMIM程序对我国3个典型填埋场的甲烷释放量进行了模拟,分析了气候因素、覆盖层表面植被覆盖率以及甲烷氧化对填埋场甲烷释放的影响.结果表明,江村沟填埋场甲烷释放量明显高于老港填埋场和天子岭填埋场,且上海老港填埋场甲烷释放量高于杭州天子岭填埋场;季节因素(如温度、降水)对填埋场甲烷释放影响非常明显,在不考虑氧化情况下,江村沟填埋场最大甲烷释放量出现在8月份,为94 kg/m3,最低甲烷释放量出现在11月份,为65 kg/m3,而天子岭填埋场最大甲烷释放量出现在1月份,为14 kg/m3,最小甲烷释放量出现在9月,为6kg/m3;覆盖层表面植被的存在可以减小甲烷的释放,但甲烷减小的趋势并不是很明显;当覆盖层中最大甲烷氧化速率为50μg CH4gsoil-1d~(-1)时,不考虑甲烷氧化情况下甲烷释放量为考虑甲烷氧化情况下甲烷释放量的6.36倍,当最大甲烷氧化速率大于100μg CH4gsoil-1d~(-1)时,甲烷释放量接近于零.
[Abstract]:The methane emission from three typical landfills in China was simulated by CALMIM program, and the effects of climate factors, vegetation coverage on the overburden and methane oxidation on methane release from landfill sites were analyzed. The results showed that the methane emission from Jiangcugou landfill was significantly higher than that from Laogang landfill and Tianziling landfill, and the methane emission from Shanghai Laogang landfill was higher than that from Hangzhou Tianziling landfill. Seasonal factors (such as temperature and precipitation) have a very obvious effect on methane release from landfills. Without considering oxidation, the maximum methane emission of Jiangcugou landfill appears in August, and the lowest methane emission of 94 kg/m3, occurs in November. The maximum methane emission of Tianziling landfill was 65 kg/m3, in January, and the minimum methane emission of 14 kg/m3, appeared in September, which was 6 kg / m ~ (3); The presence of vegetation on the surface of the overburden can reduce the release of methane, but the trend of the decrease of methane is not obvious. When the maximum oxidation rate of methane in the coating is 50 渭 g CH4gsoil-1d~ (-1), the methane emission under the condition of not considering the oxidation of methane is 6.36 times higher than that under the condition of considering the oxidation of methane. When the maximum oxidation rate of methane is more than 100 渭 g CH4gsoil-1d~ (-1), the methane emission is close to zero.
【作者单位】：浙江大学建筑工程学院;台州学院建筑工程学院;
【基金】：国家重点基础研究发展计划(973计划)资助项目(2012CB719806) 国家自然科学基金资助项目(41672288,51278452,51478427,51578356,51008274) 中央高校基本科研业务费专项资金资助项目(2014QNA4019) 浙江省公益性技术研究资助项目(2015C31005)
【分类号】：X701;X705

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