Reducing nitrous oxide emission in wastewater systems by pathway regulation

氧化亚氮(N2O)是废水处理系统中生物脱氮过程中产生的一种强有力的温室气体。N2O的排放主要发生在曝气区，由于活跃的条带作用，氨氧化细菌(AOB)是在这种条件下产生N2O的主要贡献者。本项目旨在对AOB在混合养殖废水处理系统中产生N2O进行系统的研究。该项目旨在促进AOB在不同运行条件下产生N2O的基本知识，并提供一个可靠地估计废水处理系统N2O排放量的模拟工具以及减少排放的策略。

Nitrous oxide (N2O) is a potent greenhouse gas that can be produced during biological nitrogen removal in wastewater treatment systems. N2O emissions primarily occur in aerated zones due to active striping, and ammonia-oxidizing bacteria (AOB) are the major contributors to N2O production under such conditions. The project aims to carry out a systematic study on N2O production by AOB in mixed culture wastewater treatment systems. The project aims to advance the fundamental knowledge on N2O production pathways by AOB under different operational conditions, and deliver a modelling tool for reliably estimating N2O emission from wastewater treatment systems as well as strategies to reduce the emissions.