| 具有铁氧化和好氧反硝化功能的Achromobacter denitrificans strain 2-5对序批式反应器生物脱氮性能及群落结构的影响 |
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| 引用本文： | 易宏学,李杰,王亚娥,赵炜,谢慧娜,张文莉,权海荣,慕浩,胡凯耀.具有铁氧化和好氧反硝化功能的Achromobacter denitrificans strain 2-5对序批式反应器生物脱氮性能及群落结构的影响[J].环境工程,2022,40(12):211-216. |
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| 作者姓名： | 易宏学 李杰 王亚娥 赵炜 谢慧娜 张文莉 权海荣 慕浩 胡凯耀 |
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| 作者单位： | 1. 兰州交通大学 环境与市政工程学院, 兰州 730070; |
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| 基金项目： | 国家自然科学基金"生物海绵铁体系中铁与微生物协同同步反硝化作用机制及其应用基础研究"(51768032) |
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| 摘 要： | 对1株具有铁氧化和好氧反硝化功能的反硝化无色杆菌2-5(Achromobacter denitrificans strain 2-5)强化SBR反应器脱氮性能与细菌群落结构的影响进行研究。结果表明:在SBR反应器中,添加Fe0和Achromobacter denitrificans strain 2-5能提高SBR反应器对NH4+-N和TN的去除效果,与普通SBR反应器相比,NH4+-N和TN的平均去除率分别提高了4.13%、15.73%。通过高通量测序分析,发现各反应器微生物群落结构组成存在差异。从门水平来看,变形菌门(Proteobacteria)、拟杆菌门(Bacteroidetes)、放线菌门(Actinobacteria)、厚壁菌门(Firmicutes)为优势菌门。添加Fe0和Achromobacter denitrificans strain 2-5使反应器中具有好氧反硝化功能的细菌多样性增加,强化了SBR反应器的脱氮效果,研究结果为Fe0促进好氧反硝化菌生长,强化污水脱氮提供了依据,有利于好氧反硝化菌的实际应用。
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| 关 键 词： | 好氧反硝化菌 零价铁 反硝化无色杆菌2-5 生物强化 群落结构 |
| 收稿时间： | 2021-12-31 |
EFFECTS OF ACHROMOBACTER DENITRIFICANS STRAIN 2-5 WITH IRON OXIDATION AND AEROBIC DENITRIFICATION FUNCTION ON BIOLOGICAL NITROGEN REMOVAL PERFORMANCE AND COMMUNITY STRUCTURE IN A SEQUENCING BATCH REACTOR |
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| Affiliation: | 1. School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;2. Northwest Research Institute of Engineering Investiga, Xi'an 710000, China;3. China Railway First Survey and Design Institute Group Co., Ltd, Xi'an 710000, China |
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| Abstract: | The effect of an Achromobacter denitrificans strain 2-5, with the function of iron oxidation and aerobic denitrification, on enhancing the denitrification performance of an SBR reactor and its bacterial community structure was studied in this paper. The results showed that the addition of Fe0 and Achromobacter denitricans strain 2-5 could improve the removal efficiency of NH4+-N and TN in the SBR reactor. Compared with the ordinary SBR reactors, the average removal rates of NH4+-N and TN were increased by 4.13% and 15.73%. Through high-throughput sequencing analysis, differences were found in the composition of microbial community structure in each reactor. At the phylum level, Proteobacteria, Bacteroidetes, Actinobacteria and Firmicutes were the dominant phyla. The addition of Fe0 and Achromobacter denitrificans strain 2-5 increased the diversity of bacteria with aerobic denitrification function in the reactor and strengthened the denitrification effect of the SBR reactor. The research results provide a theoretical basis for Fe0 to promote the metabolic growth of aerobic denitrifying bacteria and are conducive to the practical application of aerobic denitrifying bacteria. |
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