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- Title
Start-up and microbial community shift of partial nitrification-anammox process.
- Authors
ZHANG Xiaojing; ZHANG Han; ZHOU Yue; CHEN Zhao; ZHANG Nan; WEI Denghui
- Abstract
The ordinary activated sludge was inoculated in the SBR reactor, and the temperature was 22 ~ 26 °C, the pH was 7.8 to 8.0, the DO value was less than 0.1 mgL, and the ammonia nitrogen concentration in the feed water was 400 mgL. After 21 d, the nitrogen accumulation rate was stable above 95% and the partial nitrosation was started successfully ; then the conditions of ammonia nitrogen concentration, reaction time, water exchange ratio and other conditions were changed to stabilize the operation to 75 d; during the anaerobic ammonia oxidation start-up phase, the reaction time was adjusted to 7 hours of aeration and 16 hours of anaerobic, the total nitrogen removal rate reached more than 70% after 35 days, and the partial nitrosation-anaerobic ammonia oxidation process started successfully. In different stages of the reactor, the relative abundance of proteobacteria was reduced from 83.64% to 10.09% ; the relative abundance of floccus was increased from 1.63 % to 8.1 %.
- Subjects
MICROBIAL communities; NITROSATION; AMMONIA
- Publication
Journal of Light Industry, 2019, Vol 34, Issue 6, p56
- ISSN
2096-1553
- Publication type
Article
- DOI
10.3969/j.issn.2096-1553.2019.06.008