文献类型：期刊文献

英文题名：Performance and granular characteristics of salt-tolerant aerobic granular reactors response to multiple hypersaline wastewater

作者：Yao, Jinchi[1,2];Li, Wei[1,2,3];Ou, Dong[4];Lei, Lei[1,2];Asif, Muhammad[1,2];Liu, Yongdi[1,2,3]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Sch Resources & Environm Engn, Natl Engn Lab Ind Wastewater Treatment, Shanghai, Peoples R China;[3]Shanghai Inst Pollut Control & Ecol Secur, Shanghai, Peoples R China;[4]Jiaxing Univ, Coll Biol Chem Sci & Engn, Jiaxing, Peoples R China

年份：2021

卷号：265

外文期刊名：CHEMOSPHERE

收录：;EI(收录号：20205009613821);WOS:【SCI-EXPANDED(收录号:WOS:000603465000124)】；

基金：This work was supported by National Key Research and Development Program of China (2019YFC0408202), National Natural Science Foundation of China (51808223), Fundamental Research Funds for the Central Universities (JKB012014053, 50321022017009), Shanghai Educational Development Foundation (18CG34), Shanghai Rising-Star Program (20QC1400500).

语种：英文

外文关键词：Aerobic granular sludge; Composite hypersaline wastewater; Removal performance; Bacterial community

摘要：Aerobic granular sludge (AGS) technology has been recognized as a promising alternative to alleviate the osmotic stress of hypersaline wastewater. However, the response of AGS process to composite hypersaline wastewater on removal performance and populations was yet to be understood. In this work, two sequenced batch reactors were operated in parallel in absence (R0) and presence (R1) of high concentration sulfate as proxy for single and mixed salts (30 g salt.L-1) respectively. Results demonstrated that the presence of sulfate in hypersaline wastewater enhanced chemical oxygen demand (COD) and total nitrogen (TN) removals of 95.3% and 65.5% respectively with lower accumulations of nitrite. High-throughput 16 S rRNA gene sequencing technique elucidated that Denitromonas (31.6%) and Xanthomarina (17.0%) were the more dominant genera in AGS response to mixed salts with high sulfate and laid the biological basis for strengthening removal performance. The enrichment of halophilic Luteococcus (23.5%) in the AGS surface indicated the potential role of mixed salts in shaping the physical properties and surface population structure of AGS. Our work could facilitate the potential applications of AGS technology for industrial hypersaline wastewater treatment with complicated compositions. (C) 2020 Published by Elsevier Ltd.