| pH对污水好氧处理过程N2O产生的影响 |
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| 引用本文： | 闫旭, 李琦路, 韩云平, 郭丽, 刘理涛, 孙剑辉. pH对污水好氧处理过程N2O产生的影响[J]. 环境工程学报, 2015, 9(7): 3240-3246. doi: 10.12030/j.cjee.20150727 |
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| 作者姓名： | 闫旭 李琦路 韩云平 郭丽 刘理涛 孙剑辉 |
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| 作者单位： | 1.河南师范大学环境学院, 黄淮水环境与污染防治教育部重点实验室, 河南省环境污染控制重点实验室, 新乡 453007; 2.中国科学院生态环境研究中心, 北京 100085; 3.新乡市环境保护监测站, 新乡 453000 |
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| 基金项目： | 国家自然科学基金资助项目(51408199) 河南省基础与前沿计划项目(142300410313) 河南省教育厅科学技术研究重点项目基础研究项目(14B610004) |
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| 摘 要： | 采用能够同时监测气态和溶解态N2O功能的污水好氧处理过程模拟装置,研究了不同pH条件下氨氧化细菌(AOB)好氧反硝化途径N2O的产生特点、污染物转化过程、胞内聚合物聚羟基脂肪酸酯(PHA)含量的变化以及它们之间的内在联系。结果表明,pH在6.5~8.0范围内,N2O产生量随pH的升高而减小。pH较低时,氧化亚氮还原酶活性受到抑制,导致好氧反硝化过程中产生的N2O大量积累并逸散;随着pH得升高,氧化亚氮还原酶活性增强,N2O产生量随之减少。
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| 关 键 词： | 温室气体 污水处理 氧化亚氮 pH 好氧反硝化 |
| 收稿时间： | 2015-03-04 |
Effect of pH value on N2O production in aerobic wastewater treatment process |
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| Yan Xu, Li Qilu, Han Yunping, Guo Li, Liu Litao, Sun Jianhui. Effect of pH value on N2O production in aerobic wastewater treatment process[J]. Chinese Journal of Environmental Engineering, 2015, 9(7): 3240-3246. doi: 10.12030/j.cjee.20150727 |
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| Authors: | Yan Xu Li Qilu Han Yunping Guo Li Liu Litao Sun Jianhui |
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| Affiliation: | 1.School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, China; 2.Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; 3.Xinxiang Environmental Monitoring Station, Xinxiang 453000, China |
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| Abstract: | A simulation device of aerobic wastewater treatment process was adopted,which could monitor the gaseous and dissolved N2O simultaneously.The N2O generation characteristics from aerobic denitrification approach of ammonia oxidizing bacteria (AOB),the conversion processes of pollutants and the content variation of the intracellular polymers polyhydroxyalkanoates (PHA) were studied under the conditions of different pH values.The interior relationships between them were also analyzed.Results showed that the N2O production decreased with pH value raised in the range of pH 6.5-8.0.Under the lower level of pH value,the N2O largely accumulated and released due to the activity of nitrous oxide reductase being restrained.With pH value increased,the activity of nitrous oxide reductase enhanced and the N2O production decreased. |
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| Keywords: | greenhouse gas wastewater treatment nitrous oxide pH value aerobic denitrification |
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