| 低浓度氨氮硝化过程中影响因素的研究 |
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| 引用本文： | 李娟英,赵庆祥.低浓度氨氮硝化过程中影响因素的研究[J].环境污染与防治,2006,28(1):11-13,24. |
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| 作者姓名： | 李娟英 赵庆祥 |
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| 作者单位： | 1. 上海水产大学生命科学与技术学院,上海,200090;华东理工大学资源与环境工程学院,上海,200237
2. 华东理工大学资源与环境工程学院,上海,200237 |
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| 摘 要： | 一般来说硝化细菌对环境条件的变化比较敏感,而在低浓度氨氮系统中,硝化细菌对环境条件变化的敏感度比高浓度系统更大,而且其影响规律也有所不同.用富集培养的硝化细菌就温度、pH和碱度对高、低浓度氨氮硝化的影响做了研究.结果表明,低浓度氨氮硝化的温度系数(θ＝1.105)大于高浓度(θ＝1.099),温度对低浓度氨氮硝化的影响较高浓度大;偏碱性的环境更有利于低浓度氨氮硝化的进行,因此低浓度氨氮硝化的最优pH和Alk/N值都较高浓度高.和温度相比,pH和碱度是影响低浓度氨氮硝化过程的主要因素.
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| 关 键 词： | 硝化 温度 pH 碱度 |
| 收稿时间： | 2005-06-15 |
| 修稿时间： | 2005-06-15 |
NH3Effects of factors affecting nitrification at low ammonia concentration |
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| Li Juanying,Zhao Qingxiang.NH3Effects of factors affecting nitrification at low ammonia concentration[J].Environmental Pollution & Control,2006,28(1):11-13,24. |
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| Authors: | Li Juanying Zhao Qingxiang |
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| Institution: | 1. College of Aqua-life Science and Technology , Shanghai Fisheries University, Shanghai 200090 ; 2. Dept. of Environmental Engineering , East China University of Science and Technology , Shanghai 200237 |
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| Abstract: | Nitrifying bacteria are very sensitive to the changes of environmental conditions, especially at a low ammonia concentration environment. Effects of temperature, pH and alkalinity on nitrification were determined using enriched nitrifying bacteria. The temperature effect was slightly greater at NH3-N = 3 vs. 100 mg/L. The alkaline condition was favorable to achieve complete nitrification at a low ammonia concentration, pH and alkalinity had greater impacts than temperature on nitrification at low ammonia concentration. |
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| Keywords: | Nitrification Temperature pH Alkalinity Free ammonia |
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