HRT对厌氧膜生物反应器处理含硒废水效能的影响研究  

Effects of HRT on performance of anaerobic membrane bioreactor in dealing with selenium-containing wastewater

作　　者：张高荣 刘爽 蒙智健 彭逸香 李茂炎 蒋敏敏 张媛媛 ZHANG Gao-rong;LIU Shuang;MENG Zhi-jian;PENG Yi-xiang;LI Mao-yan;JIANG Min-min;ZHANG Yuan-yuan(School of Life and Environmental Sciences,Guilin University of Electronic Technology,Guilin 541004,China)

机构地区：[1]桂林电子科技大学生命与环境科学学院,广西桂林541004

出　　处：《现代化工》2025年第4期190-196,共7页Modern Chemical Industry

基　　金：广西自然科学基金项目(2024GXNSFBA010299);广西科技基地和人才专项(桂科AD20297007)。

摘　　要：采用厌氧膜生物反应器(AnMBR)进行含硒废水处理,考察水力停留时间(HRT)对反应器处理效能和膜污染特征的影响及其作用机制。结果表明,该反应器在处理15.8 mg Se/L亚硒酸盐时的最佳水力停留时间为36 h,稳定后去除率可达99%以上。SEM-EDS及XRD分析结果表明,还原产物硒单质呈球状或棒状,微观结构呈不易被生物利用的六角形。微生物分析结果表明,反应后的主要优势菌为Acinetobacter、Brevundimonas、Rhizobium及Acidovorax,参与亚硒酸盐还原的主要功能酶包括DMSO还原酶、富马酸还原酶、亚硫酸盐还原酶、硝酸盐还原酶及谷胱甘肽还原酶。In this study,an anaerobic membrane bioreactor(AnMBR)is used for the treatment of selenium-containing wastewater.The impact of hydraulic retention time(HRT)on the treatment performance of AnMBR and membrane fouling characteristics as well as their underlying mechanism are investigated.It is found that the optimal HRT is 36 h for the reactor in treating with 15??8 mg Se/L selenite,in which the removal efficiency of selenite can exceed 99%after it runs stably.SEM-EDS and XRD analysis indicate that the bio-reduction product,Se 0 particles,are in spherical or rod-like shapes with a hexagon micro-structure which is biologically stable.Microbiological analysis manifests that Acinetobacter,Brevundimonas,Rhizobium,and Acidovorax play a dominant role after treating with selenium-containing wastewater.Main functional reductases potentially involved in the reduction of selenite are those encoding DMSO reductase,fumarate reductase,sulfite reductase,nitrate reductase and glutathione reductase.

关 键 词：厌氧膜生物反应器(AnMBR) 含硒废水 亚硒酸盐 水力停留时间(HRT) 膜污染 

分 类 号：X52[环境科学与工程—环境工程]