| 零价铁去除地下水硝酸盐的影响因素 |
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| 引用本文： | 何珊,张永祥,唐超群,王慧峰.零价铁去除地下水硝酸盐的影响因素[J].水资源保护,2013,29(6):70-74. |
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| 作者姓名： | 何珊 张永祥 唐超群 王慧峰 |
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| 作者单位： | [1]北京工业大学建筑工程学院,北京100124 [2]北京市朝阳区水务局,北京100123 |
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| 基金项目： | 国家水体污染控制与治理科技重大专项（2009ZX07212003） |
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| 摘 要： | 通过静态试验考察零价铁去除地下水硝酸盐的影响因素。结果表明：酸洗预处理可有效提高铁屑对NO-3-N的去除效果;NO-3-N初始质量浓度增加,NO-3-N去除率下降,平均去除速率升高;铁碳比为1∶2时,反应结束时NO-3-N质量浓度最低,且活性炭可吸附反应产物NH＋4-N,降低反应产生的碱度;实际地下水去除NO-3-N效果显著,试验结束时pH维持在10以下,其共存离子对pH值的变化有一定缓冲作用。
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| 关 键 词： | 零价铁 地下水 硝酸盐 影响因素 |
| 修稿时间： | 2013/11/25 0:00:00 |
Factors in using zero-valent iron to remove nitrate in groundwater |
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| HE Shan,ZHANG Yongxiang,TANG Chaoqun,WANG Huifeng.Factors in using zero-valent iron to remove nitrate in groundwater[J].Water Resources Protection,2013,29(6):70-74. |
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| Authors: | HE Shan ZHANG Yongxiang TANG Chaoqun WANG Huifeng |
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| Affiliation: | HE Shan;ZHANG Yongxiang;TANG Chaoqun;WANG Huifeng;College of Architecture and Civil Engineering,Beijing University of Technology;Water Service Bureau of Chaoyang District of Beijing City; |
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| Abstract: | Factors in using zero-valent iron to remove nitrate in groundwater were studied through static experiments.The results show that pickling pretreatment can effectively improve the removal effect of NO-3-N.The removal rate of NO-3-N declined and the average removal rate of NO-3-N increased when the initial concentration of NO-3-N increased.The concentration of NO-3-N was at its lowest at the end of the reaction when the ratio of Fe0/ C was 1： 2,and activated carbon could adsorb the reaction product NH＋4-N,which reduced the alkalinity of reaction.The effect of NO-3-N reduction in actual groundwater was significant： the pH value was below 10 when the experiment was finished,and coexisting ions had a certain buffering effect on the change of the pH value. |
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| Keywords: | zero-valent iron groundwater nitrate influencing factors |
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