全程氨氧化菌的发现、生态分布及其生理生化特性研究进展OACSTPCD

Since the twenty century,researchers believe that nitrification occurs cis-committed and consists of two biochemical reaction processes,ammonia oxidation and nitrification.This process is achieved through the synergistic and independent actions of two types of bacteria:ammonia-oxidizing bacteria and nitrite-oxidizing bacteria.However,the discovery of Comammox challenges this perception by demonstrating that nitrification can occur in a single step,where ammonia nitrogen is directly oxidized to nitrate nitrogen.This finding is significant in understanding the earth′s nitrogen cycle.Comammox bacteria possess unique advantages over typical nitrifying bacteria,such as their ability to thrive in oligotrophic conditions.Consequently,researchers have become interested in exploring the role of these complete ammonia oxidizer in wastewater treatment.This paper provides an overview of the discovery process of Comammox,its distribution pattern and abundance in various habitats,particularly in wastewater treatment system,as well as its physiological-biochemical property.Additionally,the paper offers insights into future research directions on Comammox in wastewater treatment system,aiming to enhance our understanding of this phenomenon.