准好氧填埋结构耗氧半径的确定  

Determination of oxygen consuming radius in semi-aerobic landfilling structure

作　　者：刘玉强[1] 黄启飞[1] 董路[1] 王琪[1] 

机构地区：[1]中国环境科学研究院,北京100012

出　　处：《中国环境科学》2006年第B07期19-22,共4页China Environmental Science

基　　金：国家"863"项目(2001AA644010)

摘　　要：依据准好氧填埋的原理构建了填埋试验装置.在准好氧填埋结构中,空气通过渗滤液收集主管道和竖直通风管道在垃圾层进行扩散,并在这些管道周围形成好氧区,在空气扩散不到的地方为厌氧区.依据氧气浓度在垃圾层内的不同来决定它在垃圾层内的分布状态.并通过对单独的一根竖直通风管道进行氧气浓度插值分析,判断氧气通过竖直通风管道在垃圾层内的影响区域.结果表明,氧气的浓度分布顺序为上层>中层>下层.确立了本实验条件下准好氧填埋的好氧区域,通过二次曲面进行拟合,得到它的水平耗氧半径为7.3m,竖直耗氧半径为3.5m.Landfill test installation was established according to the semi-aerobic landfilling theory. Air could diffuse along the main leach ate collection pipe and vertical ventiduct in garbage layer. The aerobic area was formed around these pipes, and the anaerobic area was the place where air could not diffuse. The distribution state of oxygen concentration in the garbage layer was determined according to different oxygen concentration in the layer, and through inserting value analysis of oxygen concentration carried out in a single vertical ventiduct, the influence area of oxygen in the garbage layer through the vertical ventiduct was judged. The distribution of oxygen concentration possessed the sequence of upper-layer〉middle-layer〉under-layer. Under the conditions of this test, the aerobic area of semi-aerobic landfill was determined; and its horizontal oxygen consuming radius was 7.3m and its vertical radius was 3.5m through concord imitation.

关 键 词：准好氧填埋 填埋气 甲烷 耗氧半径 

分 类 号：X705[环境科学与工程—环境工程]