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曝气扰动对泥水界面硝化-反硝化性能的影响

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沈叔云, 何岩, 黄民生, 顾佩弟, 饶应福, 姚丽平, 张一璠. 曝气扰动对泥水界面硝化-反硝化性能的影响[J]. 环境工程学报, 2014, 8(10): 4153-4158.
引用本文: 沈叔云, 何岩, 黄民生, 顾佩弟, 饶应福, 姚丽平, 张一璠. 曝气扰动对泥水界面硝化-反硝化性能的影响[J]. 环境工程学报, 2014, 8(10): 4153-4158.
shu
Shen Shuyun, He Yan, Gu Peidi, Rao Yingfu, Yao Liping, Zhang Yifan, . Effects of aerating disturbances on nitrification-denitrification at sediment-water interface[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4153-4158.
Citation: Shen Shuyun, He Yan, Gu Peidi, Rao Yingfu, Yao Liping, Zhang Yifan, . Effects of aerating disturbances on nitrification-denitrification at sediment-water interface[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4153-4158.
shu

曝气扰动对泥水界面硝化-反硝化性能的影响

  • 1.

    上海市城市化生态过程与生态恢复重点实验室, 上海 200241

  • 2.

    华东师范大学资源与环境学院, 上海 200241

  • 3.

    上海港城滴水湖建设管理有限公司, 上海 201303

  • 基金项目:

    国家自然科学基金资助项目（41101471，51278192，4100-1347）

    上海市科委社会发展重点项目（12231201900）

    中央高校基本科研业务费专项资金资助

    上海市优秀学科带头人计划资助项目（11XD1402100）

  • 中图分类号: X522

Effects of aerating disturbances on nitrification-denitrification at sediment-water interface

  • 1.

    Shanghai Key Laboratory of Urbanization and Ecological Restoration, Shanghai 200062, China

  • 2.

    School of Resources and Environment Science, East China Normal University, Shanghai 200062, China

  • 3.

    Shanghai Harbour City Development(group)Co.Ltd, Shanghai 201303, China

  • Fund Project:

  • 摘要: 采用自制河道模拟装置，探讨了曝气扰动深度为10、15、25和35 cm时泥水界面硝化-反硝化的耦合性能，目的为曝气治理黑臭河道装置的优化实施和解决“氮超标”难题提供参考。结果表明，随扰动深度增加，泥水界面紊动程度呈现先下降后增加的趋势，其中泥水界面处扰动深度为10 cm时流态最激烈（Re 为3 044），扰动深度为25 cm时流态最平缓（Re为1 713）；与静止对照工况对比，曝气扰动促进了NH4+-N的硝化转化，4种曝气条件稳定时上覆水氨氮浓度都在0.50 mg/L以下，表明曝气有利于对底泥释放氨氮的控制；复氧速率与硝化速率随扰动深度的增加而减小；从总氮的控制角度来看，曝气扰动深度为25 cm时最有利于硝化-反硝化作用的耦合，上覆水总氮削减率达到51.5%，泥水界面硝化率与反硝化率分别达到（41.6±3.1）%和（32.1±0.7）%。
    Abstract: In this research,a home-made river-simulated setup was used to investigate the coupling of nitrification-denitrification at sediment-water interface with different aerating depths of 10 cm,15 cm,25 cm and 35 cm,which could provide references for the optimized fix-up of aerators and tackling the problem of nitrogen excess in treating malodorous river.Results showed that the turbulence at sediment-water interface decreased firstly and then increased with the increasing of disturbance depth.Among them,the turbulence level at sediment-water interface was the highest (Re= 3 044) with the aeration disturbance depth of 10 cm,while the turbulence degree was the lowest (Re=1 713) with the aeration depth of 25 cm.Compared with the controlled condition,the aerated disturbances could facilitate the nitrification processes and reduce the ammonium level of the overlying water to a relatively low degree (below 0.50 mg/L),which indicated that aeration could manipulate the release of endogenous ammonium.Additionally,the reoxygenation rate and nitrification rate increased with the decrease of aerated depths.Comparatively,the disturbance depth of 25 cm could be deemed as the relatively optimized condition in terms of the effective nitrification–denitrification.On this running,the reduction of total nitrogen in the overlying water could reach 51.5% and the rate of nitrifying and denitrifying at sediment-water interface were (41.6±3.1)% and (32.1±0.7)%,respectively.
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  • 收稿日期:  2013-10-13
  • 刊出日期:  2014-09-28
沈叔云, 何岩, 黄民生, 顾佩弟, 饶应福, 姚丽平, 张一璠. 曝气扰动对泥水界面硝化-反硝化性能的影响[J]. 环境工程学报, 2014, 8(10): 4153-4158.
引用本文: 沈叔云, 何岩, 黄民生, 顾佩弟, 饶应福, 姚丽平, 张一璠. 曝气扰动对泥水界面硝化-反硝化性能的影响[J]. 环境工程学报, 2014, 8(10): 4153-4158.
shu
Shen Shuyun, He Yan, Gu Peidi, Rao Yingfu, Yao Liping, Zhang Yifan, . Effects of aerating disturbances on nitrification-denitrification at sediment-water interface[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4153-4158.
Citation: Shen Shuyun, He Yan, Gu Peidi, Rao Yingfu, Yao Liping, Zhang Yifan, . Effects of aerating disturbances on nitrification-denitrification at sediment-water interface[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4153-4158.
shu

曝气扰动对泥水界面硝化-反硝化性能的影响

  • 1.  上海市城市化生态过程与生态恢复重点实验室, 上海 200241
  • 2.  华东师范大学资源与环境学院, 上海 200241
  • 3.  上海港城滴水湖建设管理有限公司, 上海 201303
  • 收稿日期:  2013-10-13
基金项目:

国家自然科学基金资助项目（41101471，51278192，4100-1347）

上海市科委社会发展重点项目（12231201900）

中央高校基本科研业务费专项资金资助

上海市优秀学科带头人计划资助项目（11XD1402100）

摘要: 采用自制河道模拟装置，探讨了曝气扰动深度为10、15、25和35 cm时泥水界面硝化-反硝化的耦合性能，目的为曝气治理黑臭河道装置的优化实施和解决“氮超标”难题提供参考。结果表明，随扰动深度增加，泥水界面紊动程度呈现先下降后增加的趋势，其中泥水界面处扰动深度为10 cm时流态最激烈（Re 为3 044），扰动深度为25 cm时流态最平缓（Re为1 713）；与静止对照工况对比，曝气扰动促进了NH4+-N的硝化转化，4种曝气条件稳定时上覆水氨氮浓度都在0.50 mg/L以下，表明曝气有利于对底泥释放氨氮的控制；复氧速率与硝化速率随扰动深度的增加而减小；从总氮的控制角度来看，曝气扰动深度为25 cm时最有利于硝化-反硝化作用的耦合，上覆水总氮削减率达到51.5%，泥水界面硝化率与反硝化率分别达到（41.6±3.1）%和（32.1±0.7）%。

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