嗜热膜生物反应器烟气同时脱硝脱汞研究  

Simultaneous NO and Hg^0 removal in a thermophilic membrane biofilm reactor

作　　者：喻珊 黄振山 唐美如 裴金铃 张再利 樊青娟 魏在山 YU Shan, HUANG Zhenshan, TANG Meiru, PEI Jinling, ZHANG Zaili, FAN Qingjuan, WEI Zaishan(Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering Sun Yat-sen University, Guangzhou 51027)

机构地区：[1]中山大学环境科学与工程学院广东省环境污染控制与修复技术重点实验室,广州510275

出　　处：《环境科学学报》2018年第4期1418-1425,共8页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金(No.21677178)~~

摘　　要：采用嗜热膜生物反应器(TMBR)同时处理含NO和Hg0的烟气,结果发现,该反应器可实现100 d的长期稳定运行,NO和Hg0去除效率分别可达87.9%、82.4%.适宜运行条件为:喷淋量为60 m L·min^(-1),p H为6.5~8.0,气体停留时间GRT为9.3 s,COD/TN为2~4.同时,采用16S r DNA分析了TMBR微生物群落.结果表明,在属类别上优势菌种是Ureibacillus和Pseudoxanthomonas.Pseudoxanthomonas、Hydrogenophaga、Thauera、Bacillus、Paracoccus、Comamonas、Pseudomonas、Nitrosovibrio、Ochrobactrum属于脱硝类菌属;Pseudomonas和Halomonas与Hg2+转化有关.Pseudomonas同时具有反硝化和还原汞化合物能力.The simultaneous treatment of NO and Hg^0 has been achieved on the thermophilic membrane biofilm reactor（ TMBR） over 100-day operation period. The removal efficiency of NO was up to 87.9%,and the efficiency for Hg^0 was close to 82.4%. After a series of experiments,the optimal factors has been screened： the optimal spray rate of 60 m L·min^-1,p H of 6.5-8.0,GRT of 9.3 s and COD/TN with 2 - 4.Microbial community of TMBR was analyzed by 16 S r DNA,and the results showed that the dominant species were Ureibacillus and Pseudoxanthomonas at genus. Pseudoxanthomonas,Hydrogenophaga,Thauera,Bacillus,Paracoccus,Comamonas,Pseudomonas,Nitrosovibrio and Ochrobactrum were denitrified species. Pseudomonas and Halomonas were related to the transformation of Hg^2＋. Pseudomonas also had the capability of denitrification and reduction of mercury compounds.

关 键 词：嗜热膜生物反应器(TMBR) 一氧化氮 汞 微生物 

分 类 号：X701.3[环境科学与工程—环境工程]