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何媛, 王宇晖, 宋新山. 电极强化人工湿地处理污水脱氮的效果[J]. 环境工程学报, 2016, 10(9): 4867-4872. doi: 10.12030/j.cjee.201504007
引用本文: 何媛, 王宇晖, 宋新山. 电极强化人工湿地处理污水脱氮的效果[J]. 环境工程学报, 2016, 10(9): 4867-4872. doi: 10.12030/j.cjee.201504007
shu
HE Yuan, WANG Yuhui, SONG Xinshan. Wastewater denitrification by construct wetlands with electrode intensification[J]. Chinese Journal of Environmental Engineering, 2016, 10(9): 4867-4872. doi: 10.12030/j.cjee.201504007
Citation: HE Yuan, WANG Yuhui, SONG Xinshan. Wastewater denitrification by construct wetlands with electrode intensification[J]. Chinese Journal of Environmental Engineering, 2016, 10(9): 4867-4872. doi: 10.12030/j.cjee.201504007
shu

电极强化人工湿地处理污水脱氮的效果

  • 1.

    东华大学环境科学与工程学院, 上海 201620

  • 基金项目:

    国家自然科学基金青年科学基金（51309053）

  • 中图分类号: X703

Wastewater denitrification by construct wetlands with electrode intensification

  • 1.

    School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China

  • Fund Project:

  • 摘要: 将电极与人工湿地耦合，创新性地构建了复合电极人工湿地高效反硝化脱氮装置，提高对污水中总氮和COD的去除效果。为了确定复合电极人工湿地比普通人工湿地脱氮效果更优，研究了碳氮比、进水总氮浓度、水力停留时间、电流强度等因素对复合电极人工湿地和人工湿地脱氮效果的影响。研究结果表明：在室温20~25℃，pH=7.5条件下，引入电极的人工湿地有更好的去除效果，较普通人工湿地总氮脱除效率可高出5.41%。并且确定了复合电极人工湿地的最佳运行条件为碳氮比=0.75，水力停留时间=48 h，进水总氮浓度=75 mg·L-1，电流强度=10 mA。在此条件下，总氮去除率可达53.34%。
    Abstract: Electrode-biofilm was coupled innovatively with constructed wetlands (CWs) in this experiment to increase the removal efficiency of TN and COD. For this purpose, a highly effective denitrification reactor electrode-constructed wetlands (E-CWs) were installed. The effects of the C/N ratio, influent total nitrogen load, HRT, and electric current intensity on the denitrification rate were compared between the E-CWs and CWs to improve the determination of the removal efficiency of E-CWs. The results indicated that E-CWs have superior removal efficiency at air temperatures of 20 to 25℃ and pH of 7.5, with the TN removal efficiency being 5.41% higher than CWs. The optimal C/N ratio, HRT, influent total nitrogen load, and the electric current intensity were 0.75, 48 h, 75 mg·L-1, and 10 mA, respectively. In addition, the TN removal efficiency reached 53.34%.
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  • 收稿日期:  2015-06-06
  • 刊出日期:  2016-09-10
何媛, 王宇晖, 宋新山. 电极强化人工湿地处理污水脱氮的效果[J]. 环境工程学报, 2016, 10(9): 4867-4872. doi: 10.12030/j.cjee.201504007
引用本文: 何媛, 王宇晖, 宋新山. 电极强化人工湿地处理污水脱氮的效果[J]. 环境工程学报, 2016, 10(9): 4867-4872. doi: 10.12030/j.cjee.201504007
shu
HE Yuan, WANG Yuhui, SONG Xinshan. Wastewater denitrification by construct wetlands with electrode intensification[J]. Chinese Journal of Environmental Engineering, 2016, 10(9): 4867-4872. doi: 10.12030/j.cjee.201504007
Citation: HE Yuan, WANG Yuhui, SONG Xinshan. Wastewater denitrification by construct wetlands with electrode intensification[J]. Chinese Journal of Environmental Engineering, 2016, 10(9): 4867-4872. doi: 10.12030/j.cjee.201504007
shu

电极强化人工湿地处理污水脱氮的效果

  • 1. 东华大学环境科学与工程学院, 上海 201620
  • 收稿日期:  2015-06-06
基金项目:

国家自然科学基金青年科学基金（51309053）

摘要: 将电极与人工湿地耦合，创新性地构建了复合电极人工湿地高效反硝化脱氮装置，提高对污水中总氮和COD的去除效果。为了确定复合电极人工湿地比普通人工湿地脱氮效果更优，研究了碳氮比、进水总氮浓度、水力停留时间、电流强度等因素对复合电极人工湿地和人工湿地脱氮效果的影响。研究结果表明：在室温20~25℃，pH=7.5条件下，引入电极的人工湿地有更好的去除效果，较普通人工湿地总氮脱除效率可高出5.41%。并且确定了复合电极人工湿地的最佳运行条件为碳氮比=0.75，水力停留时间=48 h，进水总氮浓度=75 mg·L-1，电流强度=10 mA。在此条件下，总氮去除率可达53.34%。

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