摘要：

对3种不同内部结构的潜流湿地的特性进行了研究。示踪试验的结果表明,3种湿地的HRT为:垂直折流湿地>水平折流湿地>常规湿地。在试验条件下,常规湿地对COD_Cr、NH₄⁺-N、TN、PO₄^3--P的去除率分别为76.5%、56.6%、54.4%和93.1%;水平折流湿地相应的去除率分别为88.8%、72.6%、65.8%和96.9%;垂直折流湿地相应的去除率分别为94.1%、82.6%、79.2%和99.6%;对4种污染物的去除效果均为:垂直折流湿地>水平折流湿地>常规湿地。

关键词: 水力停留时间, 常规湿地, 折流湿地

Abstract:

Experiments have been carried out to investigate the characteristics of three sub-surface constructed wetlands with different internal structures. The result of tracer experiment indicates that the HRT of the three wetlands is that vertically baffled flow wetland horizontal baffled flow wetland conventional wetland. The removals of COD_Cr,NH₄⁺-N,TN,PO₄^3--P of the conventional wetland are 76.5%,56.6%,54.4% and 93.1%,respectively,the corresponding removals of the horizontal baffled flow wetland are 88.8%,72.6%,65.8% and 96.9%,respectively,the corresponding removals of the vertical baffled flow wetland are 94.1%,82.6%,79.2% and 99.6%,respectively,and the removals of all the four pollutants are that vertical baffled flow wetland horizontal baffled flow wetlandconventional wetland.

Key words: hydralic retention time, conventional wetland, baffled flow wetland

中图分类号: 

• X703.1