在同步硝化反硝化过程中PHB和氧消耗率对N2O排放的影响.pdfVIP

Bioresource Technology 113 (2012) 232–238 Contents lists available at SciVerse ScienceDirect Bioresource Technology journal homepage: www.elsevier .com/locate/biortech Effect of PHB and oxygen uptake rate on nitrous oxide emission during simultaneous nitrification denitrification process Wenlin Jia a, Jian Zhang a,⇑, Huijun Xie b, Yujie Yan a, Jinhe Wang a,c, Yongxin Zhao a, Xiaoli Xu a a Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan, China b Environmental Research Institute, Shandong University, Jinan, China c School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, China a r t i c l e i n f o a b s t r a c t Article history: Simultaneous nitrification denitrification (SND) process was achieved in a SBR system to evaluate the Received 2 September 2011 impacts of intracellular carbon source PHB and oxygen uptake rate (OUR) on nitrous oxide (N2O) emis- Received in revised form 24 October 2011 sion. Compared with the sequential nitrification and denitrification (SQND) process, SND process signif- Accepted 25 October 2011 icantly improved the nitrogen removal. N2O emission during SND process was much higher than the Available online 10 November 2011 SQND process. The amount of N2O emission was 26.85 mg N per cycle in SND process, which was almost four times higher than that in SQND process. About