Improved simultaneous nitrification-denitrification in fixed-bed baffled bioreactors treating mariculture wastewater: Performance and microbial community behaviors
文献类型： 外文期刊
作者： Guo, Peng 1 ; Wang, Qiong 1 ; Ni, Lingfang 2 ; Xu, Silong 3 ; Zheng, Daoqiong 2 ; Wang, Yi 1 ; Cai, Fang 1 ; Cui, Mingyu 1 ; Zheng, Zhiwei 6 ; Gao, Xiuqing 1 ; Zhang, Dongdong 2 ;
作者机构： 1.Hubei Acad Agr Sci, Inst Agr Prod Proc & Nucl Agr Technol Res, Wuhan 430064, Peoples R China
2.Zhejiang Univ, Inst Marine Biol & Pharmacol, Ocean Coll, Zhoushan 316021, Zhejiang, Peoples R China
3.Xi An Jiao Tong Univ, Sch Chem, Xian 710049, Peoples R China
4.Xi An Jiao Tong Univ, Xian Key Lab Sustainable Energy Mat Chem, Xian 710049, Peoples R China
5.Three Gorges Univ, Coll Biol & Pharm, Yichang 443002, Peoples R China
6.Shanghai Yuming Technol Co Ltd, Shanghai 201802, Peoples R China
关键词： Mariculture wastewater; Biofilm; Fixed -bed baffled bioreactors; Simultaneous nitrification -denitrification; Microbial community
期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：11.4； 五年影响因子：10.6 ）
ISSN： 0960-8524
年卷期： 2023 年 385 卷
页码：
收录情况： SCI
摘要： As mariculture develops, wastewater treatment becomes crucial. In this study, fixed-bed baffled reactors (FBRs) packed with carbon fiber (CFBR) or polyurethane (PFBR) as biofilm carriers were used for mariculture wastewater treatment. Under salinity shocks between 0.10 and 30.00 g/L, the reactors showed efficient and stable nitrogen removal capacities, and the maximum NH4+-N removal rates were 107.31 and 105.42 mg/(L & sdot;d) for CFBR and PFBR, respectively, with an initial NH4+-N concentration of 120.00 mg/L. Further, in the independent aerobic chambers of the FBRs for nitrogen removal, taxa enrichment varied depending on the biofilm carrier, and the assembly process was more deterministic in CFBR than in PFBR. Two distinct clusters representing the spatial distribution of the adhering and deposited sludge in CFBR and the front and rear compartments in PFBR were noted. Furthermore, microbial interactions were more numerous and stable in CFBR. These findings improve the application prospects of FBRs in mariculture wastewater treatment.
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