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零价铁与甲醇支持的生物-化学法去除富氧水中的硝酸盐氮

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黄国鑫, 刘菲, 黄园英, 王晓宏, 邹静, 时满. 零价铁与甲醇支持的生物-化学法去除富氧水中的硝酸盐氮[J]. 环境工程学报, 2014, 8(10): 4254-4260.
引用本文: 黄国鑫, 刘菲, 黄园英, 王晓宏, 邹静, 时满. 零价铁与甲醇支持的生物-化学法去除富氧水中的硝酸盐氮[J]. 环境工程学报, 2014, 8(10): 4254-4260.
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Huang Guoxin, Liu Fei, Huang Yuanying, Wang Xiaohong, Zou Jing, Shi Man. Nitrate-nitrogen removal from oxygen rich water by a combined biological-chemical approach supported by zero-valent iron and methanol[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4254-4260.
Citation: Huang Guoxin, Liu Fei, Huang Yuanying, Wang Xiaohong, Zou Jing, Shi Man. Nitrate-nitrogen removal from oxygen rich water by a combined biological-chemical approach supported by zero-valent iron and methanol[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4254-4260.
shu

零价铁与甲醇支持的生物-化学法去除富氧水中的硝酸盐氮

  • 1.

    中国肉类食品综合研究中心, 北京 100068

  • 2.

    中国地质大学(北京)水资源与环境工程北京市重点实验室, 北京 100083

  • 3.

    国家地质实验测试中心, 北京 100037

  • 4.

    华北制药集团爱诺有限公司, 石家庄 052165

  • 基金项目:

    中国地质调查局项目（1212011121171）

    国家国际科技合作项目（0102010DFA92800）

    北京市优秀人才培养资助项目（2012D001055000001）

    中国博士后科学基金面上项目（2013M541111）

  • 中图分类号: X523

Nitrate-nitrogen removal from oxygen rich water by a combined biological-chemical approach supported by zero-valent iron and methanol

  • 1.

    China Meat Research Center, Beijing 100068, China

  • 2.

    Beijing Key Laboratory of Water Resources & Environmental Engineering, China University of Geosciences(Beijing), Beijing 100083, China

  • 3.

    National Research Center for Geoanalysis, Beijing 100037, China

  • 4.

    North China Pharmaceutical Group Aino Co., Ltd., Shijiazhuang 052165, China

  • Fund Project:

  • 摘要: 针对富氧水中硝酸盐氮（NO3--N），采用零价铁（ZVI）和甲醇支持的生物-化学联合法开展了批实验研究，探讨了ZVI类型、CH3OH：N比、初始溶解氧（DO）浓度、初始NO3--N浓度和水温等5个因素对联合法除氧脱氮效果的影响。结果表明，ZVI的除氧能力由高至低依次为：ZVI-C（0.124 d）>ZVI-A（0.141 d）>ZVI-B（0.179 d）。ZVI支持的联合法NO3--N去除率由高至低依次为：ZVI-A（99.6%）>ZVI-C（95.3%）>ZVI-B（92.2%）。CH3OH：N≤3.5：1时，联合法去除3--N；CH3OH：N=10：1时，去除100%的NO3--N；CH3OH：N=200：1时，去除70.2%的NO3--N。当初始DO浓度介于3.6~5.3 mg/L之间时，联合法的NO3--N去除率介于98.8%~99.6%之间。在任意时刻，低底物浓度（5.2 mg/L）时的NO3--N去除率低于高浓度（21.1 mg/L）时的去除率；低底物浓度下完全脱氮所需时间比高浓度下长2 d。15.0℃时联合法需要7 d可以达到完全脱氮，然而在27.5℃时则需要5 d。低温时亚硝酸盐氮浓度最大值（4.4 mg/L）显著高于高温时的最大值（1.1 mg/L）。ZVI类型、CH3OH：N、初始NO3--N浓度和水温显著影响联合法的脱氮效果，而初始DO浓度对联合法的影响不大。
    Abstract: According to the target contaminant nitrate-nitrogen(NO3--N) in oxygen rich water,a combined biological-chemical denitrification approach supported by zero-valent iron(ZVI) and methanol was proposed.Batch tests were conducted to investigate effects of ZVI type,CH3OH:N ratio,initial dissolved oxygen(DO) concentration,initial NO3--N concentration and water temperature.The results indicated that different ZVI types showed different deoxygenation capacities in the order:ZVI-C(0.124 d)>ZVI-A(0.141 d)>ZVI-B(0.179 d).NO3--N removal by the combined approach increased in the order:ZVI-A(99.6%)>ZVI-C(95.3%)>ZVI-B(92.2%).At the CH3OH:N ratios of ≤3.5:1,3--N was removed; at the CH3OH:N ratio of 10:1,100% of NO3--N was removed; and at the CH3OH:N ratio of 200:1,70.2% of NO3--N was removed.NO3--N removal by the combined approach was in the range of 98.8%~99.6% when the initial DO concentration ranged from 3.6 to 5.3 mg/L.At any time point,NO3--N removal was lower at the low substrate concentration(5.2 mg/L) than at the high substrate concentration(21.1 mg/L).The time period for complete denitrification was 2 d longer at the low substrate concentration compared with the high concentration.It took 7 d to completely denitrify NO3--N at 15℃,and 5 d at 27.5℃.The maximum nitrite-nitrogen concentration of 4.4 mg/L was markedly higher at 15℃ than the maximum value of 1.1 mg/L at 27.5℃.ZVI type,CH3OH:N ratio,initial NO3--N concentration and water temperature had significant effects on the combined approach,whereas initial DO concentration exhibited nelegible effect.
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  • 收稿日期:  2013-07-17
  • 刊出日期:  2014-09-28
黄国鑫, 刘菲, 黄园英, 王晓宏, 邹静, 时满. 零价铁与甲醇支持的生物-化学法去除富氧水中的硝酸盐氮[J]. 环境工程学报, 2014, 8(10): 4254-4260.
引用本文: 黄国鑫, 刘菲, 黄园英, 王晓宏, 邹静, 时满. 零价铁与甲醇支持的生物-化学法去除富氧水中的硝酸盐氮[J]. 环境工程学报, 2014, 8(10): 4254-4260.
shu
Huang Guoxin, Liu Fei, Huang Yuanying, Wang Xiaohong, Zou Jing, Shi Man. Nitrate-nitrogen removal from oxygen rich water by a combined biological-chemical approach supported by zero-valent iron and methanol[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4254-4260.
Citation: Huang Guoxin, Liu Fei, Huang Yuanying, Wang Xiaohong, Zou Jing, Shi Man. Nitrate-nitrogen removal from oxygen rich water by a combined biological-chemical approach supported by zero-valent iron and methanol[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4254-4260.
shu

零价铁与甲醇支持的生物-化学法去除富氧水中的硝酸盐氮

  • 1. 中国肉类食品综合研究中心, 北京 100068
  • 2. 中国地质大学(北京)水资源与环境工程北京市重点实验室, 北京 100083
  • 3. 国家地质实验测试中心, 北京 100037
  • 4. 华北制药集团爱诺有限公司, 石家庄 052165
  • 收稿日期:  2013-07-17
基金项目:

中国地质调查局项目（1212011121171）

国家国际科技合作项目（0102010DFA92800）

北京市优秀人才培养资助项目（2012D001055000001）

中国博士后科学基金面上项目（2013M541111）

摘要: 针对富氧水中硝酸盐氮（NO3--N），采用零价铁（ZVI）和甲醇支持的生物-化学联合法开展了批实验研究，探讨了ZVI类型、CH3OH：N比、初始溶解氧（DO）浓度、初始NO3--N浓度和水温等5个因素对联合法除氧脱氮效果的影响。结果表明，ZVI的除氧能力由高至低依次为：ZVI-C（0.124 d）>ZVI-A（0.141 d）>ZVI-B（0.179 d）。ZVI支持的联合法NO3--N去除率由高至低依次为：ZVI-A（99.6%）>ZVI-C（95.3%）>ZVI-B（92.2%）。CH3OH：N≤3.5：1时，联合法去除3--N；CH3OH：N=10：1时，去除100%的NO3--N；CH3OH：N=200：1时，去除70.2%的NO3--N。当初始DO浓度介于3.6~5.3 mg/L之间时，联合法的NO3--N去除率介于98.8%~99.6%之间。在任意时刻，低底物浓度（5.2 mg/L）时的NO3--N去除率低于高浓度（21.1 mg/L）时的去除率；低底物浓度下完全脱氮所需时间比高浓度下长2 d。15.0℃时联合法需要7 d可以达到完全脱氮，然而在27.5℃时则需要5 d。低温时亚硝酸盐氮浓度最大值（4.4 mg/L）显著高于高温时的最大值（1.1 mg/L）。ZVI类型、CH3OH：N、初始NO3--N浓度和水温显著影响联合法的脱氮效果，而初始DO浓度对联合法的影响不大。

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