State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China E-mail:
College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China; Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan 030024, China.
Water Sci Technol. 2022 Oct;86(8):1927-1943. doi: 10.2166/wst.2022.305.
Biological nitrogen removal process is to convert organic nitrogen and ammonia nitrogen into nitrogen via a series of reactions by microorganisms, and is widely used in wastewater treatment for its costless, high-effective, secondary pollution-free characteristics. Quorum sensing (QS) is a communication mode for microorganisms to regulate bacteria's physiological behaviors in response to environmental changes. N-acyl-homoserine lactones (AHLs)-mediated QS system is widespread in nitrogen removal-related functional bacteria and promotes biological nitrogen removal performance by regulating bacteria behavior. Recently, there has been an increasingly investigated AHLs-mediated QS system in wastewater biological nitrogen removal process. Consequently, the AHLs-mediated QS system is considered a promising regulatory strategy in the biological nitrogen removal process. This article reviewed the QS mechanism in various nitrogen removal-related functional bacteria and analyzed its effect on biological nitrogen removal performance. Combined with the application research of the QS system for enhanced biological nitrogen removal, it further put forward some prospects and suggestions which are of practical significance in practical application.
生物脱氮工艺是利用微生物的一系列反应将有机氮和氨氮转化为氮气，因其具有成本低、高效、二次无污染等特点，被广泛应用于污水处理中。群体感应（QS）是微生物根据环境变化调节细菌生理行为的一种通讯方式。N-酰基高丝氨酸内酯（AHLs）介导的 QS 系统广泛存在于脱氮相关功能菌中，通过调节细菌行为来促进生物脱氮性能。最近，在废水生物脱氮过程中，越来越多地研究了 AHLs 介导的 QS 系统。因此，AHLs 介导的 QS 系统被认为是生物脱氮过程中一种很有前途的调控策略。本文综述了各种脱氮相关功能菌中的 QS 机制，并分析了其对生物脱氮性能的影响。结合 QS 系统在强化生物脱氮中的应用研究，进一步提出了一些具有实际应用意义的展望和建议。
