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  • 张潇,何觉聪,邓杰帆,黄振山,张再利,樊青娟,魏在山.膜生物反应器处理乙二醇乙醚有机废气[J].环境工程学报,2019,13(9):2209-2216.DOI:10.12030/j.cjee.201901005    [点击复制]
  • ZHANG Xiao,HE Juecong,DENG Jiefan,HUANG Zhenshan,ZHANG Zaili,FAN Qingjuan,WEI Zaishan.Gas-phase 2-ethoxyethanol removal by membrane biofilm reactor[J].,2019,13(9):2209-2216.DOI:10.12030/j.cjee.201901005   [点击复制]
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膜生物反应器处理乙二醇乙醚有机废气
张潇1, 何觉聪2, 邓杰帆2, 黄振山1, 张再利1, 樊青娟1, 魏在山1
0
(1.中山大学环境科学与工程学院,广州 510275;2.东莞市环境科学研究所,东莞 523009)
摘要:
针对水性涂料使用过程产生的乙二醇乙醚有机废气,通过膜生物反应器进行处理,考察了进气浓度、停留时间、液体喷淋量以及循环液pH对净化性能的影响;研究了膜生物反应器降解乙二醇乙醚废气动力学;采用16S rRNA、宏基因组测序技术对微生物群落结构及功能基因进行了分析。结果表明,适宜的运行条件为停留时间10 s,循环液pH 7.60,喷淋密度1.2 m3·(m2·h)−1;生化降解乙二醇乙醚的最大反应速率为666.67 g·(m3·h)−1;经过2次进气负荷的提高,反应器中的优势菌属发生变化,由30 d的Methyloversatilis、90 d的MethyloversatilisPseudomonas变为145 d的ThaueraFlavobacterium。膜生物反应器能够高效降解乙二醇乙醚有机废气,去除率可达99.6%,本研究为处理水性涂料产生的醇醚类有机废气提供了参考。
关键词:  膜生物反应器  挥发性有机物(VOCs)  水性涂料  乙二醇乙醚
DOI:10.12030/j.cjee.201901005
投稿时间:2019-01-02
基金项目:东莞市社会科技发展重点项目(2017507101425)
Gas-phase 2-ethoxyethanol removal by membrane biofilm reactor
ZHANG Xiao1, HE Juecong2, DENG Jiefan2, HUANG Zhenshan1, ZHANG Zaili1, FAN Qingjuan1, WEI Zaishan1
(1.School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China;2.Dongguan Institute of Environmental Science, Dongguan 523009, China)
Abstract:
In this study, membrane biofilm reactor (MBfR) was used to treat waste gases containing 2-ethoxyethanol emitted from water-based painting works. The effects of operating parameters such as inlet concentration, residence time, liquid spray density and pH of circulating liquid on the purification performance of MBfR were investigated, as well as the degradation kinetics of 2-ethoxyethanol. The 16S rRNA and macronomic sequencing technologies were used to analyze the structure and functional genes of microbial community. The results show that the optimal residence time, pH of circulating liquid and spray density were 10 s, 7.6 and 1.2 m3·(m2·h)-1, respectively. The maximum reaction rate of 2-ethoxyethanol was 666.67 g·(m3·h)-1. The increase of inlet load affects to the shift of the microbial community structure in MBfR. The predominant genera changed from Methyloversatilis at 30 d,Methyloversatilis and Pseudomonas at 90 d, to Flavobacterium and Thauera at 145 d. The experimental results show that MBfR could effectively degrade 2-ethoxyethanol with the removal efficiency up to 99.6%. It provides reference for treating alcohol-ethers waste gas produced by water-based painting.
Key words:  membrane biofilm reactor  volatile organic compounds (VOCs)  water-based painting  2-ethoxyethanol