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| 出水口位置对垂直潜流人工湿地净化的影响 | |
| 引用本文： | 秦爱国,蹇兴超,冯庆革,刘峥.出水口位置对垂直潜流人工湿地净化的影响[J].环境污染与防治,2010,32(3). |
| 作者姓名： | 秦爱国 蹇兴超 冯庆革 刘峥 |
| 作者单位： | 1. 桂林工学院资源与环境工程系,广西,桂林,541004 2. 广西壮族自治区建设厅,广西,南宁,530021 3. 广西大学环境学院,广西,南宁,530004 |
| 基金项目： | 广西科学研究与技术开发计划项目 |
| 摘 要： | 研究出水口位置对垂直潜流人工湿地净化的影响。垂直潜流人工湿地以间歇进水方式运行,进水水力负荷为0.125m3/(m2.d),进水来自南宁市琅东污水处理厂初沉池出水。研究结果表明,出水口位置对垂直潜流人工湿地净化有显著影响。与底部出水相比,中部出水的TN、SS和COD去除率分别提高了8.01%、8.48%、7.99%,出水NO-3-N质量浓度降低了9.38 mg/L;但NH+4-N去除率则降低了26.25%,TP去除率降低了21.21%。 |
| 关 键 词： | 垂直潜流人工湿地 出水口位置 饱和水层 |
Effect of the outlet position on the purification efficiency of vertical subsurface-flow constructed wetlands |
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| Abstract: | The aim of this investigation was to study the effect of the outlet position on the removal efficiency of vertical subsurface-flow constructed wetlands (VF CWs). Intermittent feeding was carried out with a hydraulic loading rate of 0. 125 m~3/(m~2 · d) in the experiment. The wetland was fed with settled urban wastewater, which was obtained from the primary sedimentation tank of Langdong sewage treatment plant. The results of the study indicated that the outlet position played a great role on the removal efficiency of VF CWs. Compared with the bottom outlet operation, the removal rate of the middle outlet operation increased by 8. 01 % , 8. 48% and 7. 99% for TN,SS, COD respectively, decreased by 26. 25% and 21. 21% for NH_4~+-N and TP respectively, and the mass concentrations of NO_3~- -N decreased 9. 38 mg/L. |
| Keywords: | vertical subsurface-flow constructed wetlands (outlet position saturated zone |
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