不同生物覆盖层厚度对甲烷氧化的影响研究  

Effect of bio-cover thicknesses on methane oxidation in landfill

作　　者：杨文静[1] 董世魁[1] 张相锋[1] 朱磊[1] 陆文静[2] 王洪涛[2] 

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]清华大学环境科学与工程系,北京100084

出　　处：《环境污染与防治》2010年第7期20-24,共5页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No.50808017);国家“863计划”项目(No.2007AA06Z350)

摘　　要：利用和强化垃圾填埋场生物覆盖层的甲烷氧化能力是控制垃圾填埋场温室气体排放的一种经济和有效的手段。以陶粒和堆肥复合基质生物覆盖层为研究对象,采用实验室模拟柱试验方法对不同厚度(30～80 cm)生物覆盖层的甲烷氧化行为进行为期4个月的研究。试验结果表明,不同厚度生物覆盖层的甲烷氧化速率以30 cm厚度最佳;生物覆盖层氧气的空间分布与柱中甲烷氧化活动有显著的交互影响;以碳同位素(δ13C)测得80 cm生物覆盖层中甲烷的氧化率为41.73%。Methane oxidation in bio cover of landfill was an economic and effective measure for greenhouse emission control. In this paper, simulated column experiments were conducted to investigate the effect of bio-cover thickness on methane oxidation behavior. 6 simulated columns were filled with 30, 40, 50, 60, 70, 80 cm of compost-ceramsite matrix, the methane oxidation rate and oxidation efficiency during 4 months of experiment period were monitored. The results showed that 30 cm was an optimal thickness for methane oxidation, there had significant mutual influence between space distribution of oxygen and methane oxidation, and the methane oxidation rate of 41.73% was obtained by carbon isotope （δ^13 C） detection.

关 键 词：生物覆盖层 甲烷氧化速率 覆盖层厚度 同位素测定 

分 类 号：X705[环境科学与工程—环境工程]