| 有机物对亚硝化颗粒污泥中功能菌活性的影响 |
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| 引用本文： | 王书永,钱飞跃,王建芳,沈耀良.有机物对亚硝化颗粒污泥中功能菌活性的影响[J].环境科学,2017,38(1):269-275. |
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| 作者姓名： | 王书永 钱飞跃 王建芳 沈耀良 |
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| 作者单位： | 苏州科技大学环境科学与工程学院, 苏州 215009,苏州科技大学环境科学与工程学院, 苏州 215009;江苏省环境科学与工程重点实验室, 苏州 215009;江苏高校水处理技术与材料协同创新中心, 苏州 215009,苏州科技大学环境科学与工程学院, 苏州 215009;江苏省环境科学与工程重点实验室, 苏州 215009;江苏高校水处理技术与材料协同创新中心, 苏州 215009,苏州科技大学环境科学与工程学院, 苏州 215009;江苏省环境科学与工程重点实验室, 苏州 215009;江苏高校水处理技术与材料协同创新中心, 苏州 215009 |
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| 摘 要： | 为探明易降解有机物短期冲击对全自养亚硝化颗粒污泥(PNG)中不同功能菌活性的影响,本研究采用多批次连续实验,系统考察了PNG在有机物胁迫与恢复阶段,氮素转化性能与溶解氧(DO)利用情况的演化规律.结果表明,基质C/N比越高,亚硝态氮比累积速率q(NO-2-N)]的降幅就越大.期间,异养菌(He B)活性的增强,加快了PNG对DO的消耗速率,使得氧亲和力较差的亚硝酸盐氧化菌(NOB)活性得到了有效抑制.当重新采用无机碳源配水时,q(NO-2-N)数值明显增大,同时He B与NOB的活性均处于较低水平.因此,易降解有机物对全自养PNG系统的冲击具有一定可逆性,该过程有助于巩固氨氧化菌(AOB)的相对优势,提升亚硝化反应的稳定性.
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| 关 键 词： | 亚硝化颗粒污泥 易降解有机物 氨氧化菌 亚硝酸盐氧化菌 异养菌 功能菌活性 |
| 收稿时间： | 2016/7/12 0:00:00 |
| 修稿时间： | 2016/8/29 0:00:00 |
Impact of Biodegradable Organic Matter on the Functional Microbe Activities in Partial Nitrification Granules |
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| WANG Shu-yong,QIAN Fei-yue,WANG Jian-fang and SHEN Yao-liang.Impact of Biodegradable Organic Matter on the Functional Microbe Activities in Partial Nitrification Granules[J].Chinese Journal of Environmental Science,2017,38(1):269-275. |
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| Authors: | WANG Shu-yong QIAN Fei-yue WANG Jian-fang and SHEN Yao-liang |
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| Institution: | School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China,School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Jiangsu Key Laboratory of Environmental Science and Engineering, Suzhou 215009, China;Jiangsu High Education Collaborative Innovation Center of Water Treatment Technology and Material, Suzhou 215009, China,School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Jiangsu Key Laboratory of Environmental Science and Engineering, Suzhou 215009, China;Jiangsu High Education Collaborative Innovation Center of Water Treatment Technology and Material, Suzhou 215009, China and School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Jiangsu Key Laboratory of Environmental Science and Engineering, Suzhou 215009, China;Jiangsu High Education Collaborative Innovation Center of Water Treatment Technology and Material, Suzhou 215009, China |
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| Abstract: | To explore the short-term impact of biodegradable organic matter on the activities of different functional microbes in autotrophic partial nitrification granular sludge (PNG),the variations of both nitrogen transformation performance and dissolved oxygen (DO) uptake of PNG were investigated in this study,by carrying out successive batch tests with and without the organics stressing.The results showed that the higher the C/N ratio,the lower the specific nitrite accumulation rate of q(NO2--N).Meanwhile,the increase of heterotrophic bacteria (HeB) activities caused the fast DO uptake by PNG,which could effectively suppress nitrite oxidizing bacteria (NOB) with the low oxygen affinity.When inorganic substrate culture was employed in the following phase,both HeB and NOB showed low activities,with significant increase in q(NO2--N).In short,the adverse effects of biodegradable organic matter on the performance of PNG system were partially reversible,which could benefit to enhance the advantage of ammonium oxidizing bacteria (AOB) and improve the stability of partial nitrification reaction. |
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| Keywords: | partial nitrification granules biodegradable organic matter ammonium oxidizing bacteria nitrite oxidizing bacteria heterotrophic bacteria(HeB) functional microbe activities |
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