摘要
通过土柱模拟实验比较了不同土壤对垃圾沥滤液中高浓度污染物NH4+-N和COD的去除效率。结果表明不同类型土壤对垃圾沥滤液的处理效果有明显差异。紫色土对沥滤液NH4+-N的去除效率可达到95%以上,COD去除率较低;腐殖土对COD去除率最高,出水NH+4-N含量随pH值的上升迅速下降;与腐殖土相比,黄壤对NH+4-N的去除效果较高,对COD的去除率较低。随进水次数增加,土柱对渗滤液中污染物的去除效率明显降低。
A simulated soil column experiment was performed to compare the efficiency of NH^＋4-N and COD removal from landfill leachate by different soils. Results showed that purple soil removed 95% of NH^＋4-N from landfill leachate, while the efficiency for removing COD was the lowest. Humus soil had the highest efficiency for COD removal, and the concentration of NH^＋4-N decreased with the increase of pH of effluent. Yellow soil had higher capacity to remove NH^＋4-N than that of humus soil, but had lower ability to remove COD. Efficiency of pollutant removal decreased with the increase of influent times.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2009年第1期52-54,共3页
Environmental Science & Technology
