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曝气对水平潜流人工湿地水力特性的影响

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白少元, 丁彦礼, 解庆林, 游少鸿, 许健, 杨宗魁. 曝气对水平潜流人工湿地水力特性的影响[J]. 环境工程学报, 2014, 8(8): 3304-3308.
引用本文: 白少元, 丁彦礼, 解庆林, 游少鸿, 许健, 杨宗魁. 曝气对水平潜流人工湿地水力特性的影响[J]. 环境工程学报, 2014, 8(8): 3304-3308.
shu
Bai Shaoyuan, Ding Yanli, Xie Qinglin, You Shaohong, Xu Jian, Yang Zongkui. Effect of aeration on hydraulic characteristics of horizontal subsurface flow constructed wetlands[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3304-3308.
Citation: Bai Shaoyuan, Ding Yanli, Xie Qinglin, You Shaohong, Xu Jian, Yang Zongkui. Effect of aeration on hydraulic characteristics of horizontal subsurface flow constructed wetlands[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3304-3308.
shu

曝气对水平潜流人工湿地水力特性的影响

  • 1.

    桂林理工大学广西矿冶与环境科学实验中心, 桂林 541004

  • 2.

    广西环境污染控制理论与技术重点实验室, 桂林 541004

  • 基金项目:

    广西科学研究与技术开发计划项目（桂科攻1140002-1-2）

    广西自然科学基金资助项目（2013GXNSFBA019210）

    广西危险废物处置产业化人才小高地项目

  • 中图分类号: X703.1

Effect of aeration on hydraulic characteristics of horizontal subsurface flow constructed wetlands

  • 1.

    Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment, Guilin University of Technology, Guilin 541004, China

  • 2.

    Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin 541004, China

  • Fund Project:

  • 摘要: 通过构建曝气及未曝气潜流人工湿地小试实验系统，以NaCl为示踪剂开展示踪实验，研究曝气对人工湿地水力特性的影响。实验结果表明，两对比系统均存在不同程度的短流及死区现象，短流主要发生在床体表层，而死区则存在于床体底层。其中未曝气人工湿地系统的流场分布不均匀现象较为严重，示踪剂滞留在床体底层难以回收，系统水力效率较低（0.56）。比较而言，由于气流对水体的扰动作用，曝气对人工湿地系统水力效率有明显改善作用，减缓了床体表层水流速度，提高了示踪剂回收率，缩小了死区的范围，曝气人工湿地系统的水力效率为0.75。
    Abstract: In order to investigate the effect of artificial aeration on the hydraulic characteristics of the subsurface flow constructed wetlands (HSCWs), NaCl tracer tests were carried out in two parallel small-scale HSCWs with and without aeration. The results indicated that short-circuited flow paths and dead-zones presented in both of the two HSCWs in different levels. The short-circuited flow paths mainly existed in the surface layer, while dead-zones presented in the bottom layer. The uneven water flow distribution was obviously in the HSCW without aeration, caused the low tracer recovery and low hydraulic efficiency (0.56). In contrast, hydraulic performance was improved significantly with the presence of aeration for the disturbing of air flow. A reduction of the surface flow rate, a increasing of the tracer recovery rate and a decreasing of dead-zones were observed in the aerated HSCWs, and the hydraulic efficiency was 0.75.
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    [2] Cooper D., Griffin P., Cooper P. F. Factors affecting the longevity of sub-surface horizontal flow systems operating as tertiary treatment for sewage effluent. In: Vymazal, J., Wastewater Treatment, Plant Dynamics and Management in Constructed and Natural Wetlands. Backhuys Publishers, Leiden, The Netherlands, 2008
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  • 收稿日期:  2013-10-28
  • 刊出日期:  2014-07-31
白少元, 丁彦礼, 解庆林, 游少鸿, 许健, 杨宗魁. 曝气对水平潜流人工湿地水力特性的影响[J]. 环境工程学报, 2014, 8(8): 3304-3308.
引用本文: 白少元, 丁彦礼, 解庆林, 游少鸿, 许健, 杨宗魁. 曝气对水平潜流人工湿地水力特性的影响[J]. 环境工程学报, 2014, 8(8): 3304-3308.
shu
Bai Shaoyuan, Ding Yanli, Xie Qinglin, You Shaohong, Xu Jian, Yang Zongkui. Effect of aeration on hydraulic characteristics of horizontal subsurface flow constructed wetlands[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3304-3308.
Citation: Bai Shaoyuan, Ding Yanli, Xie Qinglin, You Shaohong, Xu Jian, Yang Zongkui. Effect of aeration on hydraulic characteristics of horizontal subsurface flow constructed wetlands[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3304-3308.
shu

曝气对水平潜流人工湿地水力特性的影响

  • 1.  桂林理工大学广西矿冶与环境科学实验中心, 桂林 541004
  • 2.  广西环境污染控制理论与技术重点实验室, 桂林 541004
  • 收稿日期:  2013-10-28
基金项目:

广西科学研究与技术开发计划项目（桂科攻1140002-1-2）

广西自然科学基金资助项目（2013GXNSFBA019210）

广西危险废物处置产业化人才小高地项目

摘要: 通过构建曝气及未曝气潜流人工湿地小试实验系统，以NaCl为示踪剂开展示踪实验，研究曝气对人工湿地水力特性的影响。实验结果表明，两对比系统均存在不同程度的短流及死区现象，短流主要发生在床体表层，而死区则存在于床体底层。其中未曝气人工湿地系统的流场分布不均匀现象较为严重，示踪剂滞留在床体底层难以回收，系统水力效率较低（0.56）。比较而言，由于气流对水体的扰动作用，曝气对人工湿地系统水力效率有明显改善作用，减缓了床体表层水流速度，提高了示踪剂回收率，缩小了死区的范围，曝气人工湿地系统的水力效率为0.75。

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