摘要
利用和强化填埋场终场覆盖层土壤的甲烷氧化能力是控制填埋场温室气体排放的一种经济和有效的手段.以杭州天子岭填埋场终场覆土为研究对象,采用柱实验方法对填埋场终场覆盖层的甲烷氧化行为进行模拟研究.实验结果表明,模拟柱整体甲烷氧化速率由实验初始的3.33mol·m-2·d-1增至8.33mol·m-2·d-1,表征了甲烷氧化菌群的生长与增殖;覆土层氧气的空间分布与其中的甲烷氧化活动有显著的交互影响,甲烷氧化活动在10～20cm深度最为强烈;整个实验过程中,甲烷氧化后转化为二氧化碳的比例为51%,其余的碳被微生物所固定.
Methane is one of the most important greenhouse gases, and methane emission from landfill takes a great part of total amount of released methane on the earth. To control methane emission from landfill site, one efficient and economical method is to use and enhance the methane oxidation capacity of landfill cover soil. In this paper, the methane oxidation behavior of the landfill cover soll is studied in a simulating column using the cover soll from the Tianziling landfill site of Hangzhou. The results show that the methane oxidation capacity of the cover soil in the column increased from 3.33 mol·m^-2·^-1 to 8.33 mol·m^-2·^-1 notrophic community has a significant from CH4 to CO2 is 51% during this during the experimental period, which indicates the multiplication of methanotrophic bacteria; the activity of methainfluence on O2 profile,the most intensive methane oxidation occurs in the layer 10 -20 cm; the transformation ratio experiment, and the left carbon source in CH4 is probably assimilated by microorganisms.
出处
《环境科学学报》
CAS
CSCD
北大核心
2006年第1期40-44,共5页
Acta Scientiae Circumstantiae
基金
国家"十五"863计划课题(No.2001AA644010
2003AA644020)~~
关键词
填埋场
覆盖层
甲烷氧化
柱实验
landfill
cover soil
methane oxidation
column experiment
