Achieving simultaneous removal of carbon and nitrogen by an integrated process of anaerobic membrane bioreactor and flow-through biofilm reactor  

作　　者：Xueshen Wu Chao Wang Depeng Wang Ahmed Tawfik Ronghua Xu Zhong Yu Fangang Meng 

机构地区：[1]School of Environmental Science and Engineering,Sun Yat-sen University,Guangzhou 510006,China [2]Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology,Guangzhou 510006,China [3]National Research Centre,Water Pollution Research Department,12622,Dokki,Cairo,Egypt [4]College of Life Sciences,Environmental Sciences Department,Kuwait University,P.O.5969,Safat 13060,Kuwait

出　　处：《Engineering Microbiology》2024年第1期18-27,共10页工程微生物学（英文）

基　　金：supported by the National Natural Science Foundation of China(nos.32161143031,22376228 and 52200081);the Fundamental Research Funds for the Central Universities(Sun Yat-sen University,23lgzy005).

摘　　要：In this study,a combined system consisting of an anaerobic membrane bioreactor(AnMBR)and flow-through biofilm reactor/CANON(FTBR/CANON)was developed to simultaneously remove carbon and nitrogen from synthetic livestock wastewater.The average removal efficiencies of total nitrogen(TN)were 64.2 and 76.4%with influent ammonium(NH4+-N)concentrations of approximately 200 and 500 mg/L,respectively.The COD removal efficiencies were higher than 98.0%during the entire operation.Mass balance analysis showed that COD and TN were mainly removed by the AnMBR and FTBR/CANON,respectively.The anammox process was the main nitrogen removal pathway in the combined system,with a contribution of over 80%.High functional bacterial activity was observed in the combined system.Particularly,an increase in the NH4+-N concentration considerably improved the anammox activity of the biofilm in the FTBR/CANON.16S rRNA high-throughput sequencing revealed that Methanosaeta,Candidatus Methanofastidiosum,and Methanobacterium were the dominant methanogens in the AnMBR granular sludge.In the CANON biofilm,Nitrosomonas and Candidatus Kuenenia were identified as aerobic and anaerobic ammonium-oxidizing bacteria,respectively.In summary,this study proposes a combined AnMBR and FTBR/CANON process targeting COD and nitrogen removal,and provides a potential alternative for treating high-strength wastewater.

关 键 词：Anaerobic membrane bioreactors ANAMMOX Bacterial community Livestock wastewater METHANOGENS Nitrogen removal 

分 类 号：X703[环境科学与工程—环境工程]