Effect of UV on De-NOx performance and microbial community of a hybrid catalytic membrane biofilm reactor

International Conference on Energy Engineering and Environmental Protection 2017

能源学;生态环境科学

Chen, Zhouyang^1,2 ; Huang, Zhensha^1,2 ; He, Yiming^1,2 ; Xiao, Xiaoliang^1,2 ; Wei, Zaishan^1,2

School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou

510275, China^1

Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou

510275, China^2

关键词: Betaproteobacteria;    Catalytic Membrane;    Gammaproteobacteria;    Microbial communities;    Microbial community structures;    Nitrification and denitrification;    Nitrogen metabolism;    Sequencing method;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/121/3/032024/pdf
DOI  :  10.1088/1755-1315/121/3/032024

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The hybrid membrane catalytic biofilm reactor provides a new way of flue gas denitration. However, the effects of UV on denitrification performance, microbial community and microbial nitrogen metabolism are still unknown. In this study, the effects of UV on deNOxperformance, nitrification and denitrification, microbial community and microbial nitrogen metabolism of a bench scale N-TiO2/PSF hybrid catalytic membrane biofilm reactor (HCMBR) were evaluated. The change from nature light to UV in the HCMBR leads to the fall of NO removal efficiency of HCMBR from 92.8% to 81.8%. UV affected the microbial community structure, but did not change microbial nitrogen metabolism, as shown by metagenomics sequencing method. Some dominant phyla, such as Gammaproteobacteria, Bacteroidetes, Firmicutes, Actinobacteria, and Alphaproteobacteria, increased in abundance, whereas others, such as Proteobacteria and Betaproteobacteria, decreased. There were nitrification, denitrification, nitrogen fixation, and organic nitrogen metabolism in the HCMBR.