Performance Evaluation and Microbial Shift of Sequencing Batch Biofilm Reactor Treating Synthetic Mariculture Wastewater Under Different Dissolved Oxygen at Aerobic Phase

作     者：HUO Siyue LIU Wenjie ZHAO Changkun LU Shuailing WANGQianzhi SHE Zonglian ZHAO Yangguo ZHANG Zhiming GUO liang JI Junyuan JIN Chunji GAO Mengchun HUO Siyue;LIU Wenjie;ZHAO Changkun;LU Shuailing;WANG Qianzhi;SHE Zonglian;ZHAO Yangguo;ZHANG Zhiming;GUO liang;JI Junyuan;JIN Chunji;GAO Mengchun

作者机构：Key Lab of Marine Environment and EcologyMinistry of EducationOcean University of ChinaQingdao 266100China Shandong Provincial Key Laboratory of Marine Environment and Geological EngineeringQingdao 266061China College of Environmental Science and EngineeringOcean University of ChinaQingdao 266100China 

出 版 物：《Journal of Ocean University of China》 (中国海洋大学学报（英文版）)

年 卷 期：2023年第22卷第6期

页      面：1692-1701页

核心收录：

学科分类：0710[理学-生物学] 1007[医学-药学(可授医学、理学学位)] 100705[医学-微生物与生化药学] 07[理学] 0707[理学-海洋科学] 071005[理学-微生物学] 10[医学] 

基　　金：supported by the National Natural Science Foundation of China(No.52070172) the Fundamental Research Funds for the Central Universities(No.201964003) 

主　　题：SBBR mariculture wastewater DO concentration microbial activity microbial community 

摘      要：The impact of dissolved oxygen(DO)at aerobic phase on the nitrogen removal,extracellular polymeric substances(EPS),microbial activity and microbial community of sequencing batch biofilm reactor(SBBR)have been evaluated in treating mariculture *** oxygen uptake rate and nitrification rate declined with DO concentration from 3–4 to 1–1.5mgL^(-1),whereas the denitrification rate had an *** activities of nitrifying enzymes reduced with the decrease of DO concentration at aerobic phase,but those of denitrifying enzymes illustrated opposite *** nitrification and denitrification rates displayed the similar variation tendency with the relevant enzymatic activities as DO concentration *** protein(PN)and polysaccharide(PS)content in EPS decreased as DO concentration declined,whereas the PN/PS ratio *** microbial community showed obvious difference as DO concentration decreased from 3–4 to 1–1.5mgL^(-1).The microbial co-occurrence,keystone taxa and sig-nificant difference illustrated some variations at different DO concentrations.