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

doi:10.7523/j.ucas.2024.015

Abstract

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

CLC Number:

X172

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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