| 异养硝化菌的分离及脱氮特性研究 |
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| 引用本文： | 游海,颜家保,许龙龙,杨洋,余永登.异养硝化菌的分离及脱氮特性研究[J].燃料与化工,2013(3):42-45. |
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| 作者姓名： | 游海 颜家保 许龙龙 杨洋 余永登 |
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| 作者单位： | 武汉科技大学化学工程与技术学院 |
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| 基金项目： | 湖北省教育厅产学研重点项目(CXY2009B002);武汉市供需对接项目(200951624497) |
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| 摘 要： | 从活性污泥中分离得到异养硝化菌株Y1，该菌的最优硝化条件：C／N为9．6，温度为30％，初始pH为9．0，摇床转速为250r／min。在此条件下，初始浓度为152．88mg／L的氨氮经8h降解后浓度降低到4．02mg／L，硝化过程中未发现中间产物亚硝酸氮和硝酸氮积累。菌株Y．不仅具有异养硝化作用，还能以硝酸氮作为唯一氮源进行好氧反硝化作用，40h内对初始浓度为196mg／L的NO3--N降解率为99．05％。
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| 关 键 词： | 异养硝化 好氧反硝化 脱氮特性 |
Research of separation and denitrification for heterotrophic nitrifier |
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| You Hai Yan Jiabao Xu Longlong Yang Yang Yu Yongdeng.Research of separation and denitrification for heterotrophic nitrifier[J].Fuel & Chemical Processes,2013(3):42-45. |
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| Authors: | You Hai Yan Jiabao Xu Longlong Yang Yang Yu Yongdeng |
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| Affiliation: | You Hai Yan Jiabao Xu Longlong Yang Yang Yu Yongdeng ( College of Chemical Engineering and Technology,Wuhan Univiersity of Science and Technology,Wuhan 430081,China) |
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| Abstract: | This paper introduces the heterotrophic nitrifier strain Y1 separated from activated sludge, with optimized nitrifying conditions of C/N 9.6, temperature 30℃ ,initial pH value 9.0 and shaking speed 250rpm,under which the 152.88mg/L NH4 -N get degraded to 4.02mg/L in 8 hours,without accumulation of intermediate products, such as nitrite and nitrate. It is also found that the bacterial strain Y1 acts as heterotrophic nitrification,but also have the ability to use NO3 -N as sole nitrogen source in aerobic conditions for denitrification,with rate of 99.05% as degradation within 40 hours for initial concentration of 196mg/L NO3- -N. |
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| Keywords: | Heterotrophic nighrification Aerobic denitrifieation Denitrification behaviors |
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