Journal
WATER RESEARCH
Volume 191, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.watres.2021.116817
Keywords
Anammox; Exogenous organics; Endogenous organics; Core taxa; Co-occurrence network
Funding
- Major Science and Technology Program for Water Pollution Control and Treatment [2017ZX07206-002]
- National Key R&D Program of China [2019YFC0408800]
- Fundamental Research Funds for the Central Universities [2020FZZX001-06]
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Organics management is crucial for the efficient and stable performance of anammox or integrated processes like denitratation-anammox. This systematic review synthesizes the state-of-the-art knowledge on the multifaceted impacts of organics on wastewater anammox community structure and function, providing insights for the design and operation of more efficient anammox-based wastewater nitrogen removal processes.
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. (C) 2021 Elsevier Ltd. All rights reserved.
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