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Impacts of organics on the microbial ecology of wastewater anammox processes: Recent advances and meta-analysis
Water Research ( IF 11.4 ) Pub Date : 2021-01-06 , DOI: 10.1016/j.watres.2021.116817
Rui Xiao , Bing-Jie Ni , Sitong Liu , Huijie Lu

Anaerobic ammonium oxidation (anammox) represents a promising technology for wastewater nitrogen removal. Organics management is critical to achieving efficient and stable performance of anammox or integrated processes, e.g., denitratation-anammox. The aim of this systematic review is to synthesize the state-of-the-art knowledge on the multifaceted impacts of organics on wastewater anammox community structure and function. Both exogenous and endogenous organics are discussed with respect to their effects on the biofilm/granule structure and function, as well as the interactions between anammox bacteria (AnAOB) and a broad range of coexisting functional groups. A global core community consisting of 19 taxa is identified and a co-occurrence network is constructed by meta-analysis on the 16S rDNA sequences of 149 wastewater anammox samples. Correlations between core taxa, keystone taxa, and environmental factors, including COD, nitrogen loading rate (NLR) and C/N ratio are obtained. This review provides a holistic understanding of the microbial responses to different origins and types of organics in wastewater anammox reactors, which will facilitate the design and operation of more efficient anammox-based wastewater nitrogen removal process.



中文翻译:

有机物对废水厌氧氨氧化工艺微生物生态学的影响:最新进展和荟萃分析

厌氧铵氧化(厌氧氨)是一种有前途的废水脱氮技术。有机物管理对于实现厌氧氨氧化或一体化工艺(例如反硝化-厌氧氨)的有效和稳定的性能至关重要。本系统综述的目的是综合了解有机物对废水厌氧菌群落结构和功能的多方面影响的最新知识。讨论了外源性有机物和内源性有机物对生物膜/颗粒结构和功能的影响,以及厌氧细菌(AnAMOB)与多种共存官能团之间的相互作用。确定了一个由19个分类单元组成的全球核心社区,并通过对149个废水厌氧菌样品的16S rDNA序列进行荟萃分析,构建了共现网络。获得了核心分类单元,基石分类单元和环境因素之间的相关性,包括COD,氮负荷率(NLR)和C / N比。这篇综述提供了对废水厌氧反应器中不同来源和有机物类型的微生物响应的整体理解,这将有助于设计和运行更高效的基于厌氧氨气的废水脱氮工艺。

更新日期:2021-01-15
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