Effect of PHB and oxygen uptake rate on nitrous oxide emission during simultaneous nitrification denitrification process.
Effect of PHB and oxygen uptake rate on nitrous oxide emission during simultaneous nitrification denitrification process.
复制标题
DOI：
10.1016/j.biortech.2011.10.095
复制
发表时间：
2012-06
影响因子：
11.4
通讯作者：
W. Jia;Jing Zhang;H. Xie;Yujie Yan;Jinhe Wang;Yongxin. Zhao;Xiaoli Xu
中科院分区：
文献类型：
--
作者：
W. Jia;Jing Zhang;H. Xie;Yujie Yan;Jinhe Wang;Yongxin. Zhao;Xiaoli Xu
Simultaneous nitrification denitrification (SND) process was achieved in a SBR system to evaluate the impacts of intracellular carbon source PHB and oxygen uptake rate (OUR) on nitrous oxide (N2O) emission. Compared with the sequential nitrification and denitrification (SQND) process, SND process significantly improved the nitrogen removal. N2O emission during SND process was much higher than the SQND process. The amount of N2O emission was 26.85mg N per cycle in SND process, which was almost four times higher than that in SQND process. About 7.05% of the removed nitrogen during SND process was converted to N2O-N. N2O emission had great relations with the OUR and the OUR could reflect the N2O emission trend more exactly than the DO concentration. At the aerobic stage of SND, the simultaneous denitrification could carried out using PHB as the carbon source and N2O emission increased because of the slow degradation of PHB.
