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- Title
Intensified simultaneous nitrification and denitrification performance in integrated packed bed bioreactors using PHBV with different dosing methods.
- Authors
Yang, Zhongchen; Sun, Haimeng; Wu, Weizhong
- Abstract
To explore an effective approach of simultaneous nitrification and denitrification in wastewater with low C/N ratios, integrated packed bed bioreactors based on poly(3-hydroxybutyrate-hydroxyvalerate) (PHBV) with different dosing methods were designed. The removal efficiency of NH4+-N in bioreactor with aeration was 88.62%, and higher NO3−-N removal efficiency was observed in bioreactor filled with grainy PHBV (95.21%) than bioreactor filled with strip PHBV (93.34%). Microbial study indicated that microbes harboring amoA and nirS genes preferred to attach on the surface of ceramsite, and significant differences in microbial community compositions at phylum and genus levels were observed. To summarize, it is feasible to utilize grainy PHBV for simultaneous and efficient removal of NH4+-N and NO3−-N from wastewater with low C/N ratios.
- Subjects
NITROGEN removal (Sewage purification); NITRIFICATION; DENITRIFICATION; PHYLA (Genus); MICROBIAL communities; BIOREACTORS
- Publication
Environmental Science & Pollution Research, 2020, Vol 27, Issue 17, p21560
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-020-08290-6