一种新型垃圾填埋场生物覆盖层基质的甲烷氧化动力学研究  

Methane Oxidation Kinetics of A New Organic Cover for Landfill

作　　者：杨文静[1] 张相锋[1] 董世魁[1] 刘晓静[2] 温璐[1] 陆文静[3] 王洪涛[3] 

机构地区：[1]北京师范大学环境学院环境模拟与污染控制国家重点联合实验室,北京100875 [2]甘肃农业大学草业学院,兰州730070 [3]清华大学环境科学与工程系,北京100084

出　　处：《中国沼气》2010年第3期11-14,24,共5页China Biogas

基　　金：国家自然科学基金(50808017);国家863高技术计划(2007AA06Z350)

摘　　要：陶粒与堆肥的混合基质可作为氧化消减垃圾填埋气的材料。在实验室模拟条件下,分析了生物覆盖层基质的含水率、温度、初始甲烷浓度、初始氧气浓度等环境因子对甲烷氧化效率的影响,借助O rigin version 7.5软件进行生物覆盖层材料甲烷氧化动力学参数拟合,旨在为实际工程应用提供科学依据。试验结果表明:堆肥与陶粒的复合基质最佳含水率为40%时,甲烷的氧化速率达6.28μmolCH4.g-1h-1;覆盖层材料的最大甲烷氧化速率为Vm ax为9.10427μmolCH4g-1h-1,半速常数Km为3.45%。Organic cover matrix of eeramsite and compost could be used as materials to oxidize and eliminate landfill gas. Laboratory-scale experiment was made to analyze the effect of environmental factors, such as moisture content, tempera- ture, methane content, oxygen content of blo-eover matrix, on methane oxidation efficiency. Kinetic parameter fittings were done by dint of Origin version 7.5 software, aiming at providing scientific basis for practical engineering application. Results showed that the mixture of compost and ceramsite was the most appropriate bio-eover material for landfill. The methane oxidation rate reached to 6.28 μmolCH4·g^-1h^-1 when water content of bio-cover mixture was 40%. The largest methane oxi- dation rate Vmax was 9. 10427μmolCH4·g^-1h^-1, Km 3.45%.

关 键 词：陶粒 堆肥 甲烷氧化 动力学参数 

分 类 号：X705[环境科学与工程—环境工程] S216.4[农业科学—农业机械化工程]