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首页> 外文会议>2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring >Effect of Dissolved Oxygen on Removal of Nitrate in Laboratory Columns Packed with Solid Organic Carbon
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Effect of Dissolved Oxygen on Removal of Nitrate in Laboratory Columns Packed with Solid Organic Carbon

机译：溶解氧对固体有机碳填充实验柱中硝酸盐去除的影响

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摘要

Effect of dissolved oxygen (DO) on removal of nitrate from groundwater was studied in laboratory columns packed with solid organic carbon. DO was measured at different height in the column to clarify that there were conditions, aerobic and anoxic, in the column. The paper reactor was not more sensitive than the cotton reactor in the DO effect. the cotton denitrification rate was 0.5181 mgN/(L¡¤h) and the paper denitrification rate was 2.2333 mgN/(L¡¤h) in 0-8 cm of the column with the influent DO 5 mg/L, and the cotton denitrification rate was 5.7823 mg N/(L¡¤h)and the paper denitrification rate was 8.4135 mg N/(L¡¤h) in 0-8cm of the column with the influent DO 1 mg/L. The effect of DO on the rate of denitrification was studied in a column that was maintained at the HRT 9.0h, influent nitrate concentrations 22.6mg N/L in the cotton reactor and influent nitrate concentrations 45.2mg N/L in the paper reactor and DO 0~8 mg/L. The total N removal rate of the two reactors was 100% and had not nitrite.
机译：在装有固体有机碳的实验室色谱柱中研究了溶解氧（DO）对地下水中硝酸盐去除的影响。在色谱柱的不同高度处测量DO，以澄清色谱柱中存在有氧和缺氧条件。在DO效应中，纸反应器不比棉反应器敏感。进水DO 5 mg / L的色谱柱在0-8 cm处的棉反硝化率为0.5181 mgN /（L·h），纸的反硝化率为2.2333 mgN /（L·h）。进水为1 mg / L的色谱柱在0-8cm柱中脱氮率为5.7823 mg N /（L·h），纸面脱氮率为8.4135 mg N /（L·h）。在维持HRT 9.0h，棉反应器中进水硝酸盐浓度为22.6mg N / L以及纸反应器和DO中进水硝酸盐浓度为45.2mg N / L的色谱柱中研究了DO对反硝化速率的影响。 0〜8 mg / L。两个反应器的总氮去除率是100％，并且没有亚硝酸盐。

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