Progress on mechanisms and influence factors of N2O production in microbial nitrogen removal process from wastewater

被引：0

作者：

Chen H. ^{[1
]}

Wang Y. ^{[1
]}

Lü Y. ^{[1
]}

机构：

[1] Key Laboratory of Coal Science and Technology, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan, 030024, Shanxi

来源：

Huagong Jinzhan/Chemical Industry and Engineering Progress | 2016年 / 35卷 / 12期

关键词：

Biological nitrogen removal; Influence factors; Nitrous oxide; Wastewater treatment;

D O I：

10.16085/j.issn.1000-6613.2016.12.040

中图分类号：

学科分类号：

摘要：

Nitrous oxide(N2O) emitted during biological nitrogen removal process is a potent greenhouse gas and can result in the destruction of the ozone layer. This paper summarizes the mechanisms and influencing factors of N2O production during wastewater biological nitrogen removal process. Hydroxylamine oxidation and nitrifier denitrification are two main pathways to produce N2O for nitrification, and factors such as dissolved oxygen, ammonium nitrogen and nitrite mainly affect microbial activity or enzyme activity that influences indirectly N2O emission from nitrification process. Denitrification process is another important source for the production of N2O, and the quantity of N2O emission has a direct connection with nitrous oxide reductase, whose activities can be affected by factors such as dissolved oxygen, organic carbon, and nitrite. New biological nitrogen removal technologies have become potential sources of N2O, but further research on mechanisms of N2O production is needed. Although N2O emission is closely related to the changes of surrounding environment, the main cause for N2O emission is the effect of microbial actions and enzyme activities. The future research on the wastewater biological nitrogen removal process should focus on the control and reduction strategy of N2O, and shows some suggestions. © 2016, Chemical Industry Press. All right reserved.

引用

页码：4020 / 4025

页数：5

共 46 条

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