|本期目录/Table of Contents|

[1]蒋沁芮,杨暖,吴亭亭,等.生物电化学脱氮技术研究进展[J].应用与环境生物学报,2018,24(02):408-414.[doi: 10.19675/j.cnki.1006-687x.2017.05038]
 JIANG Qinrui,YANG Nuan,WU Tingting,et al.Nitrogen removal from wastewater using the bioelectrochemical technology: a review[J].Chinese Journal of Applied & Environmental Biology,2018,24(02):408-414.[doi: 10.19675/j.cnki.1006-687x.2017.05038]





Nitrogen removal from wastewater using the bioelectrochemical technology: a review
1中国科学院成都生物研究所 成都 610041 2中国科学院大学 北京 100049
JIANG Qinrui YANG Nuan WU Tingting LI Daping
1 Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China 2 University of Chinese Academy of Sciences, Beijing 100049, China
bioelectrochemistry wastewater treatment denitrification ammoxidation denitrifying bacteria nitrifying bacteria
生物电化学系统(BES)因兼有污染物去除与能量回收等优点,近年来已成为环境污染治理领域的关注热点. 对生物电化学技术在脱氮方面的基本原理、含氮污染物的转化途径进行综述,主要的生物脱氮过程包括阴极反硝化、阳极氨氧化以及阴极同步硝化反硝化等,而非生物脱氮过程包括NH3/NH4+的跨膜转移、氨气逃逸等. 总结已报道的BES中主要脱氮微生物及其脱氮机制,BES中多数反硝化菌属于变形菌门(Proteobacteria);硝化细菌主要是亚硝化菌属(Nitrosomonas)和硝化杆菌属(Nitrobacter);在同步硝化反硝化过程中,电极上的硝化、反硝化菌有明显的分层现象. 最后阐述了生物电化学脱氮技术在生活污水、渗滤液、地下水处理等领域的最新应用研究,通过改变反应器构型以及运行模式等条件构建不同BES处理各类污水,以达到去除污染物同时回收电能或资源的目的. 基于目前BES的优势,认为减少脱氮中间产物(NO2-?-N、N2O)的积累及扩大BES规模对电能输出和污染物去除效果的影响将是未来的研究方向. (图3 表2 参66)
Bioelectrochemical system (BES) has recently received a considerable attention in the field of environmental protection, as it is capable of removing contaminants and recovering energy simultaneously. The principles of nitrogen removal and the transformation pathways, which include cathodic denitrification, anodic ammoxidation, and simultaneous nitrification and denitrification (SND,) involved in the BES are summarized. Furthermore, the removal of abiotic nitrogen, which includes the transmembrane process of NH3/NH4+ and ammonia escape, and the microorganisms involved in nitrogen removal have also been reviewed. Proteobacteria was identified as the dominant phylum in the denitrification biocathode, whereas the majority of nitrifying bacteria were closely related to Nitrosomonas and Nitrobacter. Additionally, a notable stratification was observed between the nitrifying and denitrifying bacteria constituting the biofilm at the bioelectrode during SND. Moreover, an overview of the recent application researches, such as in the treatment of domestic wastewater, leachate, and groundwater, has been provided. The BESs with different reactor configurations or operation modes are established to treat wastewater in order to remove contaminants and recover energy or resources. Furthermore, the prospective and challenges involved in the BES development are briefly discussed. The increase in the use of BESs in the future is expected to decrease the level of intermediates (NO2-?-N, N2O) during nitrogen removal, and the effect on energy generation and removal efficiency.


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更新日期/Last Update: 2018-04-25