| 摘要: |
| 微生物脱氮是去除废水中含氮污染物质的重要方法，微生物的种类及其生存环境不同会导致其释放N2O的途径及机理具有差异性。本文系统地综述了脱氮过程产生N2O微生物的种类、特点及其释放N2O的多重途径，综合分析了参与N2O形成的相关酶类和影响N2O释放的关键因素，同时，提出了减缓生物脱氮过程释放N2O的相关措施，对未来脱氮工艺的优化与N2O释放的控制提供新思路。 |
| 关键词: N2O 脱氮微生物种类 N2O产生途径 酶类 |
| DOI：10.14188/j.ajsh.2021.01.003 |
| 分类号:Q89 |
| 基金项目:国家自然科学基金青年项目（42007223）；贵大专基合字（2019）04；黔教合KY字［2021］086 |
|
| The release mechanism of nitrous oxide during microbial nitrogen removal process and related measures to lower its emission |
|
HE Tengxia, CHEN Mengping, DING Chenyu, LI Zhu, LIU Yuting, WANG Jing
|
|
Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region （Ministry of Education）/Key Laboratory of Animal Genetics， Breeding and Reproduction in the Plateau Mountainous Region （Ministry of Education）， College of Life Sciences/Institute of Agro-bioengineering， Guizhou University， Guiyang 550025， Guizhou， China
|
| Abstract: |
| Biological nitrogen removal is an important method to remove nitrogen-containing pollutants in wastewater. However， the different types of microorganisms and their living environments would lead to differences in the ways and mechanisms of N2O emission. This article systematically reviews the types and characteristics of microorganisms that produce N2O， and the multiple pathways of N2O emission during nitrogen removal process. We comprehensively analyze the corresponding enzymes involved in the formation of N2O and key factors affecting N2O release. Meanwhile， some relevant measures are proposed to lower N2O emission in the biological denitrification process. This paper would provide new ideas for the optimization of the future biological denitrification process and the control of N2O release. |
| Key words: N2O denitrifying microbe N2O producing pathway enzyme |
