城市污水PN/A工艺中NOB的控制策略研究进展  

Recent Progress of NOB Control Strategies in Sewage PN/A Process

作　　者：张亮[1] 李朝阳[1] 彭永臻[1] ZHANG Liang;LI Zhaoyang;PENG Yongzhen(National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology,Beijing University of Technology,Beijing Key Laboratory of Water Quality Science and Water Environment Recovery Engineering,Beijing 100124,China)

机构地区：[1]北京工业大学城镇污水深度处理与资源化利用技术国家工程实验室,水质科学与水环境恢复工程北京市重点实验室,北京100124

出　　处：《北京工业大学学报》2022年第4期421-429,共9页Journal of Beijing University of Technology

基　　金：国家自然科学基金面上资助项目(51978007);北京市科学技术委员会科技计划资助项目(Z181100005518006)。

摘　　要：一体化短程硝化-厌氧氨氧化(partial nitritation and anammox, PN/A)工艺具有曝气能耗低、无须有机碳源等优点,是目前城市污水脱氮技术的研究热点.城市污水PN/A工艺的稳定运行有赖于对系统中亚硝酸盐氧化菌(nitrite oxidizing bacteria, NOB)增殖的有效控制,NOB的过度增殖会增加出水NO;并对脱氮功能微生物产生竞争性抑制,降低PN/A系统的脱氮效果和稳定性.综述了城市污水PN/A工艺中NOB控制策略的研究进展,重点论述了选择抑制性物质投加、选择性排泥以及外源生物强化等策略对NOB的控制效果与机理.强化城市污水PN/A工艺中NOB控制,宜进一步考察多种抑制策略的联合作用,并注重微生物基础理论的研究;开发新型组合工艺降低NOB增殖对系统脱氮效果的影响也是可行的发展方向.Single-stage partial nitritation and anammox(PN/A) process is one of the research hotspots in sewage nitrogen removal technologies since it has several advantages such as low aeration consumption and no need of organic carbon.For actual application of sewage single-stage PN/A process,stable operation is critical but highly affected by NOB proliferation.The overgrowth of NOB causes the increase of effluent nitrate concentration and compete out functional microorganisms for nitrogen removal,thereby seriously destroying nitrogen removal performance.The research progress of NOB control strategies in sewage single-stage PN/A process was reviewed.In particular,critical strategies including selective inhibitory substrate addition,selective biomass discharge and bio-augmentation were highlighted,and their effects and mechanisms were discussed.For future studies aiming at NOB control in sewage PN/A process,the combination of multiple inhibitory strategies and underlying microbial mechanism were suggested.In addition,developing novel combined process to reduce negative effects of NOB proliferation on nitrogen removal performance is also a feasible research direction.

关 键 词：NOB抑制 短程硝化-厌氧氨氧化 城市污水 厌氧氨氧化 氨氧化菌 生物脱氮 

分 类 号：X-1[环境科学与工程]