抄録
N2O has been caused more and more attention because of its green-house effect. Microbial activity in biosphere is regarded as an important N2O source. Therefore, to make clear and modify the activity of microorganisms is of fundamental importance to control N2O emission from microorganisms, especially, in Wasetwater treatment situations. In the paper, based on investigation, heterotrophic, nitrate respiring and nitrate reducing microorganisms were emphasized as those being able to produce N2O, besides traditional nitrifiers and denitrifiers. There are different pathways of N2O emission for different organisms under different conditions. The possible mechanisms of N2O yielding were detailed in the paper accompanying with the description of various factors affecting N2O emission. Then, current situation of research on control of N2O emission from wastewater treatment was described and analyzed for making clear the trend of research on N2O emission control in waste water treatment field.
