Abstract
Matured nitrosation granules were inoculated to an anoxic-aerobic continuous-flow reactor at room temperature (17-19℃). The startup and stabilization of nitrosation with granules were studied. The results show that the nitrosation of the continuous-flow was successfully achieved with an average nitrite accumulation rate (NAR) above 95%. With the increase of the dissolved oxygen (DO) content from (3±0.2) to (4.5±0.2) mg·L-1 in the aerobic zone, the NAR remained above 95%. The effect of the hydraulic retention time (HRT) of the continuous-flow reactor was investigated. The short HRT (8.4 h) sped up the circulation of the sludge particles in the continuous-flow system such that the broken granular sludge could not be integrated in time, resulting in the deterioration of granular sludge settling and the loss of sludge granules. The performance of the system was restored with the increase of the HRT to 12.2 h and the continuous-flow system stabilized. The ammonia removal efficiency and NAR were 86.7% and 96.2% on day 166, respectively.
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.
