国家自然科学基金(51978485,52100058);中国博士后科学基金(2021TQ0246,2021M692422)
厌氧氨氧化(anaerobic ammonium oxidation,anammox)工艺被认为是当前污水生物脱氮领域最经济的处理工艺,有利于实现污水处理厂的能源自给。厌氧氨氧化菌是该工艺的核心功能微生物。以厌氧氨氧化菌为主导微生物形成的厌氧氨氧化颗粒污泥具有沉速大、污泥持留能力强及对不利环境抵抗能力强等突出优势,是实现厌氧氨氧化工艺最有前景的污泥形态。本论文围绕厌氧氨氧化颗粒,介绍了厌氧氨氧化菌的特性、种类及代谢途径,综述了厌氧氨氧化颗粒污泥的形成假说及与厌氧氨氧化颗粒污泥聚集密切相关的胞外聚合物(extracellular polymeric substance,EPS)和群体感应研究现状,并对今后厌氧氨氧化颗粒的研究进行了展望,以期为后续厌氧氨氧化颗粒的研究及厌氧氨氧化颗粒工艺的优化提供参考。
Anaerobic ammonium oxidation (anammox) process is the most economical bioprocess for nitrogen removal from wastewater at present, which is conducive to the energy neutral of wastewater treatment plants. Anammox bacteria play a major role in this process. Anammox granular sludge, formed with anammox bacteria, is the most promising sludge form for anammox process, owing to the high settling rate, strong retention capacity, and strong resistance to environmental stresses. Focusing on anammox granules, this paper introduced the characteristics, species, and metabolic pathways of anammox bacteria, and the formation mechanism of anammox granular sludge, and reviewed the extracellular polymeric substance (EPS) and quorum sensing, which are closely related to the aggregation of anammox granular sludge. Moreover, we summarized the future research directions of anammox granules. This review is expected to serve as a reference for the subsequent research on anammox granules and the regulation of anammox process.
王伟刚,王彤,樊宇菲,王亚宜. 厌氧氨氧化颗粒污泥聚集机制研究进展[J]. 微生物学通报, 2022, 49(5): 1927-1940
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