Impacts of organics on the microbial ecology of wastewater anammox processes: Recent advances and meta-analysis

Rui Xiao; Bing-Jie Ni; Sitong Liu; Huijie Lu

doi:10.1016/j.watres.2021.116817

Impacts of organics on the microbial ecology of wastewater anammox processes: Recent advances and meta-analysis

Water Res. 2021 Mar 1:191:116817. doi: 10.1016/j.watres.2021.116817. Epub 2021 Jan 6.

Authors

Rui Xiao¹, Bing-Jie Ni², Sitong Liu³, Huijie Lu⁴

Affiliations

¹ Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou 310058, China.
² Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.
³ Department of Environmental Engineering, Peking University, Beijing 100871, China.
⁴ Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou 310058, China. Electronic address: luhuijie@zju.edu.cn.

PMID: 33461083
DOI: 10.1016/j.watres.2021.116817

Abstract

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.

Keywords: Anammox; Co-occurrence network; Core taxa; Endogenous organics; Exogenous organics.

Publication types

Meta-Analysis
Review
Systematic Review

MeSH terms

Ammonium Compounds*
Anaerobiosis
Bioreactors
Denitrification
Nitrogen
Oxidation-Reduction
Wastewater*

Substances

Ammonium Compounds
Waste Water
Nitrogen