两种填埋结构中氨氮的空间变化规律研究  

Experimental study on spatial characteristics of NH_3-N in leachate in municipal solid waste landfill

作　　者：王晓龙[1] 黄启飞[1] 呼世斌[2] 庞香蕊[1] 

机构地区：[1]中国环境科学研究院,北京100012 [2]西北农林科技大学资源环境学院,杨凌712100

出　　处：《环境工程学报》2008年第10期1398-1402,共5页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(50508042);“十一五”科技支撑计划课题(2006BAC02A19)

摘　　要：依据准好氧填埋和厌氧填埋的原理,构建了准好氧和厌氧填埋的实验室模拟装置,研究了2种填埋结构渗滤液中氨氮的空间分布规律。结果表明,准好氧填埋结构3层渗滤液中氨氮浓度都呈不断稳定下降的趋势,29周时上层、中层和下层渗滤液中氨氮浓度分别从填埋初的931.8、1796和3019 mg/L下降到25.6、328.9和820.1 mg/L;厌氧填埋结构3层渗滤液中氨氮浓度下降趋势不明显且波动性较大。准好氧填埋与厌氧填埋结构渗滤液中氨氮浓度表现出明显的空间层次效应,为下层>中层>上层。Semi-aerobic and anaerobic landfilling experiment installations were constructed according to semi-aerobic landfilling and anaerobic landfilling theories to study the distribution of NH3-N. The result showed that the concentration of NH3-N in three layers in leachate of semi-aerobic landfill reduced steadily. Within 29 week, the concentration of NH3-N of leachate in upper-layer, middle-layer and under-layer were decreased from 931.8, 1 796 and 3 019 mg/L in the origination to 25.6, 328.9 and 820. 1 mg/L respectively. There was no obvious decreasing trend of NH3-N in anaerobic landfill. Spatial differences of the levels of NH3-N in the leachate were found to be significant both in the semi-aerobic landfill and in the anaerobic landfill, which were lined with under-layer 〉 middle-layer 〉 upper-layer.

关 键 词：准好氧填埋 垃圾渗滤液 空间层次效应 

分 类 号：X703[环境科学与工程—环境工程]