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Volume 2018, Article ID 8429145, 9 pages
Review Article

Ammonia-Oxidizing Archaea (AOA) Play with Ammonia-Oxidizing Bacteria (AOB) in Nitrogen Removal from Wastewater

1Qingdao University of Technology, Qingdao 266033, China
2State and Local Joint Engineering Research Center of Municipal Wastewater Treatment and Resource Recycling, Qingdao 266033, China

Correspondence should be addressed to Zhixuan Yin; moc.kooltuo@niynauxihz

Received 3 May 2018; Accepted 17 July 2018; Published 13 September 2018

Academic Editor: Jin Li

Copyright © 2018 Zhixuan Yin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


An increase in the number of publications in recent years indicates that besides ammonia-oxidizing bacteria (AOB), ammonia-oxidizing archaea (AOA) may play an important role in nitrogen removal from wastewater, gaining wide attention in the wastewater engineering field. This paper reviews the current knowledge on AOA and AOB involved in wastewater treatment systems and summarises the environmental factors affecting AOA and AOB. Current findings reveal that AOA have stronger environmental adaptability compared with AOB under extreme environmental conditions (such as low temperature and low oxygen level). However, there is still little information on the cooperation and competition relationship between AOA and AOB, and other microbes related to nitrogen removal, which needs further exploration. Furthermore, future studies are proposed to develop novel nitrogen removal processes dominated by AOA by parameter optimization.