| 间歇曝气对硝化菌生长动力学影响及NO_2~-积累机制 |
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| 引用本文： | 蒋轶锋,陈浚,王宝贞,陈建孟.间歇曝气对硝化菌生长动力学影响及NO_2~-积累机制[J].环境科学,2009,30(1). |
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| 作者姓名： | 蒋轶锋 陈浚 王宝贞 陈建孟 |
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| 作者单位： | 蒋轶锋,陈浚,陈建孟,JIANG Yi-feng,CHEN Jun,CHEN Jian-meng(浙江工业大学生物与环境工程学院,杭州,310032);王宝贞,WANG Bao-zhen(哈尔滨工业大学市政与环境工程学院,哈尔滨,150090)
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| 基金项目： | 国家自然科学基金，浙江省重大科技专项项目，杭州市重大科技攻关项目 |
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| 摘 要： | 采用间歇曝气方法处理低氨氮浓度生活污水,在SRT 10、 5、 2.5和1.25 d条件下,SBR反应器出水中NO-2含量(以N计,下同)为18、 19、 14和5 mg/L,积累率达到73%、 85%、 91%和78%,而连续曝气SBR仅为14%、 21%、 31%和34%;同时氨氮去除率维持在97%、 95%、 76%和39%,与连续曝气SBR的92%、 97%、 71%和47%相当.对硝化菌的生长动力学分析表明,在间歇曝气硝化系统中,氨氧化菌(AOB)可以通过产率系数(YAOB)的增加来提高自身在反应器中的绝对生物量,并补偿因间歇曝气引起的比底物利用速率下降,从而使比增殖速率(μm)和NH+4的氧化速率不变.与此相反,亚硝酸盐氧化菌(NOB)却不具备这种补偿特性,导致其μm和对NO-2氧化速率降低,引起了NO-2在出水中积累.
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| 关 键 词： | 短程硝化 动力学 间歇曝气 亚硝酸盐(NO-2) |
Effect of Intermittent Aeration on Growth Kinetics of Nitrifiers and Mechanism for NO_2~- Accumulation |
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| JIANG Yi-feng,CHEN Jun,WANG Bao-zhen,CHEN Jian-meng.Effect of Intermittent Aeration on Growth Kinetics of Nitrifiers and Mechanism for NO_2~- Accumulation[J].Chinese Journal of Environmental Science,2009,30(1). |
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| Authors: | JIANG Yi-feng CHEN Jun WANG Bao-zhen CHEN Jian-meng |
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| Institution: | 1.College of Biological and Environmental Engineering;Zhejiang University of Technology;Hangzhou 310032;China;2.College of Municipal and Environmental Engineering;Harbin Institute of Technology;Harbin 150090;China |
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| Abstract: | In order to investigate shortcut nitrification,an intermittent-aeration SBR was employed to treat the domestic wastewater containing low concentration of NH_4~+.The results shows that under the SRTs of 10,5,2.5 and 1.25 d,NO_2~- produced in effluent were built up to 18,19,14 and 5(mg/L),respectively,with accumulation ratio of 73%,85%,91% and 78% respectively.As to the continuousaeration SBR,however,the NO_2~- accumulation ratios were only 14%,21%,31% and 34%.In addition,the corresponding removals of NH~+_4 ... |
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