| 水力停留时间对活性污泥系统的硝化性能及其生物结构的影响 |
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| 引用本文： | 李红岩,张昱,高峰,余韬,杨敏.水力停留时间对活性污泥系统的硝化性能及其生物结构的影响[J].环境科学,2006,27(9):1862-1865. |
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| 作者姓名： | 李红岩 张昱 高峰 余韬 杨敏 |
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| 作者单位： | 1. 中国科学院生态环境研究中心环境水质学国家重点实验室,北京,100085
2. 中国建筑设计研究院机电院给排水所,北京,100044 |
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| 基金项目： | 国家自然科学基金国际合作项目(20521140076);国家杰出青年科学基金项目(50525824) |
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| 摘 要： | 利用微生物呼吸醌指纹谱图结合传统分析方法研究了水力停留时间(HRT从30 h逐步缩短至5 h)对活性污泥硝化性能及种群结构的影响.结果表明,对于NH4+-N浓度为500 mg·L-1的废水,在HRT≥20 h时,氨氮去除率可达98%以上.若继续缩短HRT,污泥流失严重,尽管进水NH4+-N浓度降低,出水NH4+-N和NO2
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| 关 键 词： | 水力停留时间 硝化菌 硝化 微生物呼吸醌 活性污泥法 |
| 文章编号： | 0250-3301（2006）09-1862-04 |
| 收稿时间： | 2005-09-24 |
| 修稿时间： | 2005-09-242005-11-26 |
Effects of Hydraulic Retention Time(HRT) on Nitrification Performance and Microbial Community of Conventional Activated Sludge(CAS) |
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| LI Hong-yan,ZHANG Yu,GAO Feng,YU Tao and YANG Min.Effects of Hydraulic Retention Time(HRT) on Nitrification Performance and Microbial Community of Conventional Activated Sludge(CAS)[J].Chinese Journal of Environmental Science,2006,27(9):1862-1865. |
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| Authors: | LI Hong-yan ZHANG Yu GAO Feng YU Tao and YANG Min |
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| Institution: | 1. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China,1. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China,2. China Architecture Design & Research Group, Mechanical Electrical Plumbing Design & Research Institute Plumbing Design Department, Beijing 100044, China,1. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China,1. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China |
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| Abstract: | A conventional activated sludge system was used to treat the ammonium-bearing inorganic wastewater for 260 days under decreased HRTs. When treating 500 mg x L(-1) NH4+ -N wastewater, over 98% ammonia removal could be obtained at HRT > or =20 h. Sharp washout of biomass occurred when HRT was further decreased, resulting in the accumulation of ammonium and nitrite. Changes in the community structure were monitored by microbial quinone and conventional analytical methods. Quinone profiles indicated that ammonia-oxidizing bacteria (AOB) in beta-Protevbacteria and Nitrobacteria in alpha-Proteobacteria were the predominant species to oxidize ammonia and nitrite, respectively. The number of AOB decreased with the reduction of biomass in bioreactor, while that of nitrite-oxidizing bacteria (NOB) changed little and fluctuated at 10(5) CFU x L(-1) |
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| Keywords: | hydraulic retention time(HRT) nitrifiers nitrification microbial quinine conventional activated sludge system |
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