摘要
膜曝气生物膜反应器(membrane aerated biofilm reactor,MABR)作为一种新型的污水处理技术,因其高效的氮去除能力和较低的N_(2)O排放水平而受到广泛关注。传统污水处理脱氮过程中,硝化反硝化阶段主要通过羟胺氧化、AOB反硝化、异养反硝化以及化学变化途径产生N_(2)O。MABR处理市政污水较传统曝气方式具有更低的N_(2)O排放潜力,主要得益于MABR特殊的底物异向扩散模式和无泡曝气方式,这会减少N_(2)O产生潜力及排放水平。该文总结了MABR在运行过程中N_(2)O产生与降低途径,讨论了N_(2)O产生和排放的影响因素及控制策略,并对今后研究MABR体系中N_(2)O排放进行了展望,以期说明MABR进一步工程应用在碳减排方面的优势。
The membrane aerated biofilm reactor(MABR),as a novel wastewater treatment technology,has garnered extensive attention for its high nitrogen removal performance and reduced nitrous oxide(N_(2)O)emissions.In the context of conventional biological nitrogen removal process,N_(2)O is produced through four main pathways,including hydroxylamine oxidation,AOB denitrification,heterotrophic denitrification,and chemical reactions.Remarkably,the MABR exhibits a lower potential for N_(2)O emission compared to traditional aeration methods.This decrease is primarily due to its unique substrate counter-diffusion mechanism and bubbleless aeration,which mitigate N_(2)O production potential and emission level.This paper summarizes the pathways of N_(2)O generation and reduction in MABR systems,discusses the influencing factors and control strategies of N_(2)O generation and emission,and looks forward to the future research directions for N_(2)O emission management in MABRs,thereby highlighting the advantages of MABR in further engineering application in carbon emission reduction.
作者
王亚宜
贺泰来
李佳
吴巧玉
汪涵
赵立功
WANG Yayi;HE Tailai;LI Jia;WU Qiaoyu;WANG Han;ZHAO Ligong(College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China;Shanghai Heyuan Environmental Science and Technology Co.,Ltd.,Shanghai 200020,China)
出处
《北京工业大学学报》
北大核心
2025年第3期350-358,共9页
Journal of Beijing University of Technology
基金
国家杰出青年科学基金资助项目(52225001)。
