摘要
分别构建无植物、宽叶香蒲和芦苇3组潜流人工湿地系统,研究潜流人工湿地对受到TCE(三氯乙烯)污染地下水的处理效果。实验结果表明:无植物湿地系统和芦苇湿地系统的出水TCE去除率波动较大,香蒲湿地系统出水TCE去除率相对稳定,其出水TCE平均去除率为77.7%,最大值为87.5%,最小值为70.7%。对于无植物湿地系统,湿地床中层和下层的TCE去除率相差较大,而该差异在香蒲和芦苇湿地系统中并不明显。在湿地系统中TCE沿水平方向的降解反应基本符合一级反应动力学模型。
The three kinds of subsurface flow constructed wetlands（ SFCW）（ without plants and with common cattail or reed）were used to investigate their purification capacities for TCE contaminated ground water. Experimental results indicated the removal of TCE in CW with common cattail was more stable than in other CWs and its average,maximal and minimum removal rates of TCE achieved to 77. 7%,87. 5%,70. 7%,respectively. In addition,only in CW without plants,the removal of TCE had changed obviously with the change of depth. The TCE degradation along the horizontal direction followed the first order reaction kinetics in these CWs.
出处
《环境工程》
CAS
CSCD
北大核心
2017年第1期15-19,共5页
Environmental Engineering
基金
国家自然科学基金项目(41430643)
关键词
潜流人工湿地
地下水TCE污染
去除效果
subsurface flow constructed wetland
TCE contaminated groundwater
removal efficiency
