| C/N和pH值对高温好氧反硝化菌产N2O的影响研究 |
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| 引用本文： | 张苗,黄少斌,肖先念.C/N和pH值对高温好氧反硝化菌产N2O的影响研究[J].环境工程学报,2012,6(1):275-279. |
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| 作者姓名： | 张苗 黄少斌 肖先念 |
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| 作者单位： | 1. 华南理工大学环境科学与工程学院,广州510006／污染控制与生态修复广东省普通高等学校重点实验室,广州510006
2. 华南理工大学环境科学与工程学院,广州510006／污染控制与生态修复广东省普通高等学校重点实验室,广州510006／华南理工大学制浆造纸工程国家重点实验室,广州510006 |
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| 基金项目： | 广东省科技厅项目（2011B010100029，2011B090400284）；广东省经济和信息化委员会资助项目（20100106-3）；广州市番禺区科技和信息化局资助项目（2011-专02-4-23） |
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| 摘 要： | 以50℃高温、好氧条件下能进行高效好氧反硝化的菌株TAD1为研究对象,在不同C/N和pH值培养条件下,对其24 h的反硝化效率和反硝化过程中N2O的逸出量进行了研究。结果显示,C/N和pH值对菌株TAD1的反硝化效率和N2O产生量有明显影响.菌株TAD1最适宜的C/N为9,pH值为7,此时反硝化效率达到99.12%,N2O产生量仅为3.35×10-2 mg/L,N2 O转化率为0.045%,反硝化产物以氮气为主。另外,菌株TAD1不适宜在酸性条件下生长,pH值为6时反硝化效率为83.18%,N2O产生量为13.88×10-2 mg/L,是pH值为7时的4.14倍,是pH值为8时的5.07倍。
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| 关 键 词： | 高温 好氧反硝化 C/N pH值 氧化亚氮 |
Effect of C/N ratio and pH on nitrous oxide production of themophic aerobic denitrifier |
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| Zhang Miao,Huang Shaobin and Xiao Xiannian.Effect of C/N ratio and pH on nitrous oxide production of themophic aerobic denitrifier[J].Techniques and Equipment for Environmental Pollution Control,2012,6(1):275-279. |
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| Authors: | Zhang Miao Huang Shaobin and Xiao Xiannian |
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| Institution: | 1,2(1.College of Environmental Science and Engineering,South China University of Technology,Guangzhou 510006,China; 2.The Key Laboratory of Environmental Protection and Eco-Remediation of Guangdong Regular Higher Education Institutions,Guangzhou 510006,China; 2.State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510006,China) |
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| Abstract: | Under different C/N ratios and pH,the experiment investigated the nitrogen removal efficiency and nitrous oxide production of thermophic aerobic denitrifier strain TAD1.The results indicated that the nitrogen removal efficiency and nitrous oxide production were influenced by C/N ratio and pH.The nitrogen removal efficiency was up to 99.12%,and nitrous oxide production was only 3.35×10-2 mg/L,N2O conversion rate was 0.045%,the major end production of denitrification was nitrogen under the optimum C/N ratio of 9 and pH 7.Additionally,acidity was not favorable for aerobic denitrification between 6 and 8 in pH,the nitrogen removal efficiency was 83.18% with pH 6,and the production of nitrous oxide was up to 13.88×10-2 mg/L,which was 4.14 times higher than that of pH 7 and 5.07 times higher than that of pH 8. |
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| Keywords: | themophic aerobic denitrification C/N ratio pH nitrous oxide |
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