文献类型：期刊文献

英文题名：Effects of hydraulic retention time and proteins on sludge toxicity for 4-chlorophenol wastewater treatment in sequencing batch reactors

作者：Zhao, Jianguo[1];Li, Yahe[2];Chen, Xiurong[3];Wang, Lu[3];Xu, Yan[3]

机构：[1]Zhengzhou Univ Light Ind, Henan Collaborat Innovat Ctr Environm Pollut Cont, Sch Mat & Chem Engn, Zhengzhou, Henan, Peoples R China;[2]Ningbo Univ, Key Lab Appl Marine Biotechnol, Key Lab Marine Biotechnol Zhejiang, Minist Educ, Ningbo, 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：2019

卷号：33

期号：2

起止页码：158

外文期刊名：WATER AND ENVIRONMENT JOURNAL

收录：;EI(收录号：20184105933886);WOS:【SCI-EXPANDED(收录号:WOS:000467382800001)】；

基金：This study was financially supported by the Natural Science Foundation (No. 51378207) and the Special S&T Project on Treatment and Control of Water Pollution (No. 2014ZX07202-011-002) in China.

语种：英文

外文关键词：4-chlorophenol wastewater; sludge toxicity; HRT; protein identification; SBR

摘要：Due to the higher uncertainty of environmental risk for pollutants' treatment by activated sludge, 10 mg/L influent 4-chlorophenol (4-CP) treated via a sequencing batch reactor (SBR) was used as acclimated SBR. Another SBR was used as control SBR without 4-CP. The effects of hydraulic retention time (HRT) and proteins on sludge toxicity for 4-CP treatment were analysed, and compared to the control SBR. Results showed that the sludge toxicity in acclimated SBR was significantly higher than that of the control SBR. Shortening HRT from 12 to 8 hours was beneficial to degrade 4-CP and lower sludge toxicity. The identified highly expressed protein of ABC transporter co-existed in control and acclimated SBRs, while other proteins of TonB-dependent receptor, heat shock 70 kDa protein and superoxide dismutase in acclimated sludge were overexpressed relative to the control sludge, which played an important function in degrading 4-CP, resisting 4-CP toxicity and eliminating sludge toxicity.