Abstract
High nitrous oxide (N2O) and nitrite (NO2--N) emission limit the application of the partial nitrification (PN) technology. A novel aerated vertical flow constructed wetland (VFCW) using waste gas from PN process was designed to enhance nitrogen removal and reduce N2O and NO2--N in PN process. Compared with unaerated VFCW, NH4+-N and TN removal efficiencies in aerated VFCW were significantly improved by 118.48% and 78.14%, respectively. Furthermore, the aerated wetland mode can effectively eliminate the problem of high NO2--N and N2O pollution. After VFCW purification, the NO2--N concentration was reduced from 17.07 mg/L to 0.34 mg/L. Meanwhile, the N2O removal rate could reach 88.72%. Microbial analysis showed that the higher microbial community abundance and more fully nitrification and denitrification process were found in aerated VFCW, led to its reduced NO2--N and N2O emission.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
