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氨氧化微生物共代谢去除有机微污染物的研究进展
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Abstract:
本文综述了有机微污染物在污水厂中的去除，其中氨氧化过程对有机微污染物的去除有着促进作用，进而引出氨氧化微生物的共代谢研究。通过分析共代谢过程中的功能性酶以及转化产物的结构分析，了解污染物的去除命运以及影响去除的一些关键性因素，为此类污染物去除提供新思路。结果表明，氨氧化共代谢是污染物生物去除的主要方式，三种氨氧化微生物都在其中起到重要作用。氨单加氧酶作为共代谢转化的功能性酶，使得污染物发生羟基化而被去除。污水厂中的某些参数对共代谢过程存在影响，如氨氮浓度、温度、SRT等，通过优化相关参数达到污染物去除效率最大化。
This article provides an overview of the removal of organic micropollutants in wastewater treatment plants, with a focus on the promoting effect of the ammonia oxidation process on the removal of organic micropollutants, leading to the emergence of co-metabolic studies of ammonia- oxidizing microorganisms. By analyzing the functional enzymes involved in co-metabolism and the structural analysis of transformation products, the fate of pollutants during removal and some key factors influencing removal are understood, providing new insights for the removal of such pollutants. The results demonstrate that co-metabolism through ammonia oxidation is a primary pathway for biological removal of pollutants, and all three types of ammonia-oxidizing microorganisms play crucial roles in this process. Ammonia monooxygenase, as a functional enzyme in co-metabolic transformation, facilitates the hydroxylation of pollutants for their removal. Certain parameters in wastewater treatment plants have an impact on the co-metabolic process, such as ammonia nitrogen concentration, temperature, and solids retention time (SRT), and optimization of these parameters can maximize the efficiency of pollutant removal.
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