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尉中伟, 王晓昌, 郑于聪, 葛媛, 李东辉, 赵泽宁. 水平潜流人工湿地脱氮功效中植物的作用[J]. 环境工程学报, 2015, 9(2): 595-602. doi: 10.12030/j.cjee.20150215
引用本文: 尉中伟, 王晓昌, 郑于聪, 葛媛, 李东辉, 赵泽宁. 水平潜流人工湿地脱氮功效中植物的作用[J]. 环境工程学报, 2015, 9(2): 595-602. doi: 10.12030/j.cjee.20150215
shu
Yu Zhongwei, Wang Xiaochang, Zheng Yucong, Ge Yuan, Li Donghui, Zhao Zening. Role of plants in horizontal subsurface flow constructed wetlands for nitrogen removal[J]. Chinese Journal of Environmental Engineering, 2015, 9(2): 595-602. doi: 10.12030/j.cjee.20150215
Citation: Yu Zhongwei, Wang Xiaochang, Zheng Yucong, Ge Yuan, Li Donghui, Zhao Zening. Role of plants in horizontal subsurface flow constructed wetlands for nitrogen removal[J]. Chinese Journal of Environmental Engineering, 2015, 9(2): 595-602. doi: 10.12030/j.cjee.20150215
shu

水平潜流人工湿地脱氮功效中植物的作用

  • 1.

    西安建筑科技大学环境与市政工程学院, 西北水资源与环境生态教育部重点实验室, 西安 710055

  • 基金项目:

    国家"水体污染控制与治理"科技重大专项(2013ZX07310-001)

    陕西省社发重点项目(2011KTZB03-03-03)

  • 中图分类号: X703

Role of plants in horizontal subsurface flow constructed wetlands for nitrogen removal

  • 1.

    Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China

  • Fund Project:

  • 摘要: 为了研究芦苇(Phragmites australis)在收割期前/后、湿地床体内部各个区域内、一年四季中在水平潜流人工湿地脱氮效用所起的作用,实验设置了有/无植物2组平行反应器。结果表明,芦苇在收割前/后对于水平潜流人工湿地脱氮效果均有促进作用,植物地上部分氮吸收量占湿地脱氮量的10.2%。在芦苇收割前/后(5月~9月、10月~次年5月),芦苇湿地日均脱氮量分别是无植物湿地的1.55倍与1.11倍。高、矮芦苇不同组织中总氮浓度分布趋势一致,2种芦苇各组织含量分别为:穗(28.69 g/kg) > 叶(13.69 g/kg) > 茎(5.31 g/kg)、穗(28.06 g/kg) > 叶(14.61 g/kg) > 茎(8.46 g/kg)。在湿地的各个沿程区域,总氮、氨氮累加去除率变化趋势一致,并且从反应器前部到尾部呈上升趋势,从上部到下部呈下降趋势。有芦苇湿地的脱氮效用优于无植物湿地,且底部氮积累含量也较少。一年四季中有芦苇湿地在各个季节脱氮量是无植物湿地的1.06~1.47倍。
    Abstract: In order to investigate the role of Phragmites australis in the horizontal subsurface flow constructed wetlands (CWs) for nitrogen removal under the conditions before and after the harvest, in each CW beds' regions and throughout the year, two parallel CW reactors were set up, one was planted with Phragmites and the other was unplanted. The conclusions were as follows, Phragmites had a positive impact on nitrogen removal both before and after harvest and the amount of nitrogen absorbed by above-ground parts of Phragmites accounted for 10.2% of the total nitrogen removal amount. Besides, during the period before harvest (May to September) and after harvest (October to May of the next year), the average daily nitrogen removal amount of the planted CW could amount to 1.55 times and 1.11 times than the unplanted CW, respectively. The total nitrogen distribution trend was consistent both in the tall and short Phragmites, which was listed as follows: spike (28.69 g/kg) > leaf (13.69 g/kg) > stem (5.31 g/kg) and spike (28.69 g/kg) > leaf (14.61 g/kg) > stem (8.46 g/kg). Meanwhile, in the regions of every CWs beds, the change trends of accumulated removal efficiency for total nitrogen and ammonia nitrogen were consistent, and the removal efficiency increased from the front to the tail as well as increasing from the bottom to the upper of the CWs systems. The nitrogen removal efficiency of the planted CW was better than unplanted CW, and there was less nitrogen accumulating at the bottom of the planted CW. The amount of nitrogen removal in the planted CW was 1.06~1.47 times of unplanted CW throughout the year.
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  • 收稿日期:  2014-03-26
  • 刊出日期:  2015-02-07
尉中伟, 王晓昌, 郑于聪, 葛媛, 李东辉, 赵泽宁. 水平潜流人工湿地脱氮功效中植物的作用[J]. 环境工程学报, 2015, 9(2): 595-602. doi: 10.12030/j.cjee.20150215
引用本文: 尉中伟, 王晓昌, 郑于聪, 葛媛, 李东辉, 赵泽宁. 水平潜流人工湿地脱氮功效中植物的作用[J]. 环境工程学报, 2015, 9(2): 595-602. doi: 10.12030/j.cjee.20150215
shu
Yu Zhongwei, Wang Xiaochang, Zheng Yucong, Ge Yuan, Li Donghui, Zhao Zening. Role of plants in horizontal subsurface flow constructed wetlands for nitrogen removal[J]. Chinese Journal of Environmental Engineering, 2015, 9(2): 595-602. doi: 10.12030/j.cjee.20150215
Citation: Yu Zhongwei, Wang Xiaochang, Zheng Yucong, Ge Yuan, Li Donghui, Zhao Zening. Role of plants in horizontal subsurface flow constructed wetlands for nitrogen removal[J]. Chinese Journal of Environmental Engineering, 2015, 9(2): 595-602. doi: 10.12030/j.cjee.20150215
shu

水平潜流人工湿地脱氮功效中植物的作用

  • 1. 西安建筑科技大学环境与市政工程学院, 西北水资源与环境生态教育部重点实验室, 西安 710055
  • 收稿日期:  2014-03-26
基金项目:

国家"水体污染控制与治理"科技重大专项(2013ZX07310-001)

陕西省社发重点项目(2011KTZB03-03-03)

摘要: 为了研究芦苇(Phragmites australis)在收割期前/后、湿地床体内部各个区域内、一年四季中在水平潜流人工湿地脱氮效用所起的作用,实验设置了有/无植物2组平行反应器。结果表明,芦苇在收割前/后对于水平潜流人工湿地脱氮效果均有促进作用,植物地上部分氮吸收量占湿地脱氮量的10.2%。在芦苇收割前/后(5月~9月、10月~次年5月),芦苇湿地日均脱氮量分别是无植物湿地的1.55倍与1.11倍。高、矮芦苇不同组织中总氮浓度分布趋势一致,2种芦苇各组织含量分别为:穗(28.69 g/kg) > 叶(13.69 g/kg) > 茎(5.31 g/kg)、穗(28.06 g/kg) > 叶(14.61 g/kg) > 茎(8.46 g/kg)。在湿地的各个沿程区域,总氮、氨氮累加去除率变化趋势一致,并且从反应器前部到尾部呈上升趋势,从上部到下部呈下降趋势。有芦苇湿地的脱氮效用优于无植物湿地,且底部氮积累含量也较少。一年四季中有芦苇湿地在各个季节脱氮量是无植物湿地的1.06~1.47倍。

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