萘胁迫对SBR反应器处理性能及微生物群落的影响*

doi:10.7523/j.ucas.2024.015

摘要/Abstract

摘要： 本研究在实验室搭建了序批式反应器（sequencing batch reactor,SBR）,添加不同浓度的萘形成梯度浓度胁迫,反应器共计运行166 d,以探究萘胁迫对SBR反应器运行状况、胞外聚合物（extracellular polymeric substances,EPS）及微生物群落的影响。研究结果表明：1）萘胁迫提升了反应器反硝化性能,提高了总氮的去除率;2）萘胁迫促进了EPS的产生,尤其是其中的蛋白质类I、富里酸物质、腐殖酸物质;3）萘胁迫影响微生物群落多样性和物种组成,提升了萘降解基因丰度。

关键词: 多环芳烃, SBR反应器, 宏基因组, 萘降解

Abstract: This study built a sequencing batch reactor (SBR) in the laboratory, and added different concentrations of naphthalene to form gradient concentration stress. The reactor ran for a total of 166 days. The effects of naphthalene stress on the operating condition of the SBR reactor, extracellular polymeric substances (EPS), and microbial community were studied. The results showed that: 1) Naphthalene stress improved the denitrification performance and total nitrogen removal rate of the reactor; 2) Naphthalene stress promoted the production of EPS, especially protein I, fulvic acid and humic acid; 3) naphthalene stress affected the diversity and composition of microbial community and increased the abundance of naphthalene degrading genes.

Key words: polycyclic aromatic hydrocarbons, SBR reactor, metagenome, naphthalene degradation

中图分类号:

X172

郭潇潇, 李宗, 郭秋翠, 刘冰鑫, 常占坤, 曹冰, 刘新春. 萘胁迫对SBR反应器处理性能及微生物群落的影响^*[J]. 中国科学院大学学报, DOI: 10.7523/j.ucas.2024.015.

GUO Xiaoxiao, LI Zong, GUO Qiucui, LIU Bingxin, CHANG Zhankun, CAO Bing, LIU Xinchun. Effects of naphthalene stress on treatment performance and microbial community in SBR reactor[J]. Journal of University of Chinese Academy of Sciences, DOI: 10.7523/j.ucas.2024.015.

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萘胁迫对SBR反应器处理性能及微生物群落的影响^*

Effects of naphthalene stress on treatment performance and microbial community in SBR reactor

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