文献类型：期刊文献

英文题名：Effects of 4-chlorophenol wastewater treatment on sludge acute toxicity, microbial diversity and functional genes expression in an activated sludge process

作者：Zhao, Jianguo[1];Li, Yahe[2];Li, Yu[1];Yu, Zeya[3];Chen, Xiurong[3]

机构：[1]Zhengzhou Univ Light Ind, Sch Mat & Chem Engn, Henan Collaborat Innovat Ctr Environm Pollut Cont, Zhengzhou 450001, Henan, Peoples R China;[2]Ningbo Univ, Key Lab Marine Biotechnol Zhejiang, Minist Educ, Key Lab Marine Biotechnol, Ningbo 315211, Zhejiang, Peoples R China;[3]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China

年份：2018

卷号：265

起止页码：39

外文期刊名：BIORESOURCE TECHNOLOGY

收录：;EI(收录号：20182505335661);WOS:【SCI-EXPANDED(收录号:WOS:000439467300006)】；

基金：This study was financially supported by the Natural Science Foundation (No. 51378207) in China, and the Scientific and Technological Key Project of Henan Province, China (No. 182102410094).

语种：英文

外文关键词：Sludge acute toxicity; Microbial diversity; Functional genes expression; 4-Chlorophenol wastewater

摘要：In this study, the effects of 4-chlorophenol (4-CP) wastewater treatment on sludge acute toxicity of luminescent bacteria, microbial diversity and functional genes expression of Pseudomonas were explored. Results showed that in the entire operational process, the sludge acute toxicity acclimated by 4-CP in a sequencing batch bioreactor (SBR) was significantly higher than the control SBR without 4-CP. The dominant phyla in acclimated SBR were Proteobacteria and Firmicutes, which also existed in control SBR. Some identified genera in acclimated SBR were responsible for 4-CP degradation. At the stable operational stages, the functional genes expression of Pseudomonas in acclimated SBR was down-regulated at the end of SBR cycle, and their expression mechanisms needed further research. This study provides a theoretical support to comprehensively understand the sludge performance in industrial wastewater treatment.