| 表面流人工湿地处理污染河水的净化效果 |
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| 引用本文： | 张智超,王树谦.表面流人工湿地处理污染河水的净化效果[J].排灌机械工程学报,2018,36(3):209-214. |
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| 作者姓名： | 张智超 王树谦 |
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| 作者单位： | 1.河北工程大学水利水电学院, 河北 邯郸 056002; 2.河北省水资源高效利用工程技术研究中心, 河北 邯郸 056038 |
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| 摘 要： | 为了给永年洼高效净污人工湿地系统示范性工程提供技术支撑,试验研究了表面流人工湿地对受污染的滏阳河水主要污染物总氮(TN)和氨氮(NH+4-N)的净化效果.试验在邯郸永年降雨径流试验场开展,表面流人工湿地中试试验在水力负荷为430 mm/d、水力停留时间为0.5 d的条件下运行.结果表明,系统对TN和NH+4-N的平均去除率分别为51.89%和47.00%,对污染河水有良好的去除效果.在试验期间的进水水质下,发现此设置条件下的表面流人工湿地系统对TN和NH+4-N的最大处理负荷分别为8.95和2.16 mg/L,最大去除率分别为60.00%和56.48%.对TN和NH+4-N质量浓度沿程变化规律发现:溶解氧(DO)是影响湿地系统对TN和NH+4-N去除的关键因子;进一步分析得出NH+4-N的去除更易受DO的影响.NH+4-N质量浓度沿程变化趋势为在系统前段短暂小幅度升高,中前段大幅度下降,尾端趋于平稳;TN质量浓度全程均呈平稳下降趋势.
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| 关 键 词： | 表面流人工湿地 总氮 氨氮 平均去除率 浓度沿程变化 |
| 收稿时间： | 2017-05-31 |
Purification effects of surface flow constructed wetland in treating polluted river water |
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| ZHANG Zhichao,WANG Shuqian.Purification effects of surface flow constructed wetland in treating polluted river water[J].Journal of Drainage and Irrigation Machinery Engineering,2018,36(3):209-214. |
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| Authors: | ZHANG Zhichao WANG Shuqian |
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| Institution: | 1.School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan, Hebei 056002, China; 2.Hebei Province Effective Utilization of Water Resource Engineer Research Center, Hebei University of Engineering, Handan, Hebei 056038, China |
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| Abstract: | To provide technical support for a demonstration project-efficient pollutant removal surface flow constructed wetland system, purification effects of the system on main pollutants such as nitrogen(TN)and ammonia nitrogen(NH+4-N)in Fuyang River were studied. A pilot experiment was carried out in Yongnian rainfall runoff test field of Handan at 430 mm/d hydraulic load with 0.5 d hydraulic retention time. The results showed that the system was subject to 51.89% and 47.00% avera-ge removal rates for TN and NH+4-N, respectively, exhibiting a good purification effect on polluted river water body. Based on the inflow water body quality during the trial, it turned out that the maximum working loads of the system were 8.95 mg/L and 2.16 mg/L for TN and NH+4-N, and the corresponding maximum removal rates were 60.00% and 56.48%, respectively. The TN and NH+4-N concentrations along the course were examined. It was identified that dissolved oxygen(DO)was one of the key factors influencing TN and NH+4-N removal, especially for NH+4-N removal. The trend of NH+4-N concentration slightly increases in the upper course, significantly decreases in the middle and gets stable in the tail end. The TN concentration showed a steadily decreasing trend along the course. |
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| Keywords: | free surface wetland TN NH+4-N average removal rate concentration along the flow |
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