文献类型：期刊文献

英文题名：Effect of the addition of organic carbon sources on nitrous oxide emission in anaerobic-aerobic (low dissolved oxygen) sequencing batch reactors

作者：Li, Hongjing[1];Chen, Xiurong[2];Chen, Yinguang[3]

机构：[1]Fudan Univ, Dept Environm Sci & Engn, Shanghai 200433, Peoples R China;[2]E China Univ Sci & Technol, Sch Resource & Environm Engn, Shanghai 200237, Peoples R China;[3]Tongji Univ, Sch Environm Sci & Engn, Shanghai 200092, Peoples R China

年份：2010

卷号：4

期号：4

起止页码：490

外文期刊名：FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING IN CHINA

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000284776900014)】；

基金：This work was supported by the Shanghai Shuguang Scholarship (No. 05SG26) and the Postdoctoral Foundation of China (No. 20090450524).

语种：英文

外文关键词：anaerobic-aerobic (low dissolved oxygen); nitrous oxide (N2O) emitting rate; municipal wastewater; waste activated sludge; alkaline fermentation liquid

摘要：The effect of additional organic carbon sources on the production of nitrous oxide (N2O) in anaerobic-aerobic (low dissolved oxygen) real wastewater treatment system was investigated. In this paper, three laboratory-scale sequencing batch reactors (SBRs) (SBR-1, SBR-2 and SBR-3) were operating under an anaerobic-aerobic (low dissolved oxygen, 0.15-0.45 mg center dot L-1) configuration. The SBRs were 'long-term cultured' respectively with a single municipal wastewater sample, sodium acetate, and a waste-activated sludge alkaline fermentation liquid as the additional carbon sources of real wastewater. Off-gas analysis showed that N2O was emitted into the atmosphere during the aerobic (low dissolved oxygen) period in the three SBRs, and the order of N2O emission rate was SBR-2 > SBR-1 > SBR-3. It was observed that the higher poly-beta-hydroxyvalerate fraction of polyhydroxyalkanoates, the lower glycogen transformation and less nitrite accumulation was in SBR-3, while the opposite behavior was observed in SBR-2. Further research indicated that the interaction of the factors above potentially affected the N2O emission in the anaerobic-aerobic (low dissolved oxygen) system.