| 流态对活性污泥硝化性能及菌群结构的影响 |
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| 引用本文： | 于莉芳,潘瑞玲,彭党聪,裴立影,郭瑜,王彬斌.流态对活性污泥硝化性能及菌群结构的影响[J].环境工程学报,2014,8(9):3563-3566. |
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| 作者姓名： | 于莉芳 潘瑞玲 彭党聪 裴立影 郭瑜 王彬斌 |
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| 作者单位： | 西安建筑科技大学环境与市政工程学院, 西安 710055;西安建筑科技大学环境与市政工程学院, 西安 710055;西安建筑科技大学环境与市政工程学院, 西安 710055;西安建筑科技大学环境与市政工程学院, 西安 710055;西安建筑科技大学环境与市政工程学院, 西安 710055;西安建筑科技大学环境与市政工程学院, 西安 710055 |
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| 基金项目： | 国家自然科学基金青年科学基金项目（51208414）；陕西省教育厅重点实验室项目（11JS055）；陕西省教育厅专项（12JK0650）；西安建筑科技大学校青年基金（QN1118）；西安建筑科技大学人才基金（RC0924） |
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| 摘 要： | 生化反应器流态会影响基质分布,从而影响反应器内微生物的性能与菌群结构。在相同氮负荷下运行SBR和CSTR以对比分析2种典型流态(推流式和完全混合式)对活性污泥中硝化菌性能及其菌群结构的影响。结果表明,SBR中,氨氧化速率(AUR)和亚硝酸盐氧化速率(NUR)分别为(16.55±2.05)mg N/(L·g VSS·h)和(15.33±2.02)mg N/(L·g VSS·h),CSTR中AUR和NUR分别为(10.13±0.73)mg N/(L·g VSS·h)和(9.34±2.56)mg N/(L·g VSS·h);SBR中,氨氧化菌(AOB)和亚硝酸盐氧化菌(NOB)含量分别为(3.4±0.3)%和(5.4±1.2)%,优势菌分别为Nitrosomonas europaea-Nitrosococcus mobilis lineage和Nitrobacter,CSTR中,AOB和NOB含量分别(3.1±0.4)%和(6.8±1.1)%,优势菌分别为Nitrosospira和Nitrospira。虽然2个流态下的硝化菌含量接近,但推流式的硝化速率比完全混合式高64%,这是因为推流式更有利于反应速率较快的r-strategist(Nitrosomonas europaea-Nitrosococcus mobilis lineage和Nitrobacter)生存,而完全混合式则更利于反应速率较慢K-strategist(Nitrosospira和Nitrospira)生存。
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| 关 键 词： | 流态 菌群结构 硝化性能 |
| 修稿时间： | 7/3/2013 12:00:00 AM |
Effect of flow pattern on nitrifiers community and nitrification rates of nitrifying activated sludge process |
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| Yu Lifang,Pan Ruiling,Peng Dangcong,Pei Liying,Guo Yu and Wang Binbin.Effect of flow pattern on nitrifiers community and nitrification rates of nitrifying activated sludge process[J].Techniques and Equipment for Environmental Pollution Control,2014,8(9):3563-3566. |
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| Authors: | Yu Lifang Pan Ruiling Peng Dangcong Pei Liying Guo Yu and Wang Binbin |
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| Institution: | School of Environmental & Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;School of Environmental & Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;School of Environmental & Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;School of Environmental & Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;School of Environmental & Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;School of Environmental & Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China |
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| Abstract: | A nitrifying sequencing batch reactor (SBR) and completely stirred tank reactor (CSTR) were operated to investigate the effect of two typical flow patterns (plug flow and complete mixing) on nitrifiers community and nitrification rates of nitrifying activated sludge. The results showed that, the ammonium utilized rate (AUR) and nitrite utilized rate (NUR) in the SBR were (16.55±2.05)mg N/(L·g VSS·h) and (15.33±2.02)mg N/(L·g VSS·h), respectively, the AUR and NUR in the CSTR were (10.13±0.73)mg N/(L·g VSS·h) and (9.34±2.56)mg N/(L·g VSS·h), respectively. In the SBR, the percentage of ammonia oxidizing bacteria (AOB) and nitrite oxidizing bacteria (NOB) were (3.4±0.3)% and (5.4±1.2)%, the dominant AOB and NOB were Nitrosomonas europaea-Nitrosococcus mobilis lineage and Nitrobacter.While in the CSTR, the percentage of ammonia oxidizing bacteria (AOB) and nitrite oxidizing bacteria (NOB) were (3.1±0.4)% and (6.8±1.1)%, the dominant AOB and NOB were Nitrosospira and Nitrospira spp. Compareal to complete mixing, plug flow had a similar nitrifiers population, but the nitrification rate was 64% higher, these may be due to that the rapid growth r-strategist was much more adaptive to plug flow, while the slow growth K-strategist was more adaptive to the complete mixing. |
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| Keywords: | flow pattern community structure nitrification activity |
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