中文摘要：

采用3组人工配水的单级自养脱氮生物膜反应器，对比研究了曝气方式及碳源对系统N2O排放量和排放特征的影响。结果显示，1号、2号和3号反应器在一个运行周期内N2O累积排放量和N2O转化率分别为13．69、14．28、2．51mg和1．36％、1．49％、0．236％。连续曝气的1号反应器与间歇曝气的2号反应器相比，其N2O累积释放量、N2O转化率相近。进水含有机碳源的3号反应器N2O累积释放量、N2O转化率约为进水不舍有机碳源的2号反应器的1／6。曝气方式对N2O排放特征影响较大，连续曝气的1号反应器N2O累积排放量持续增加，N2O平均排放速率和溶解态N2O质量浓度表现为先升高至最大值后持续下降。间歇曝气的2号反应器N2O排放量主要来自曝气段，N2O平均排放速率和溶解态N2O质量浓度整体呈现出先升高后降低的趋势。与其他生物脱氮工艺相比，单级自养脱氮工艺N2O转化率较低。

英文摘要：

Three single autotrophic denitrification biofilm reactors with artificial water are applied to study the influence of aeration treatments and carbon source on the N2O emission and N2O emission characteristics. The results show that the accumulative N2O emission amount and the conversion rate of N2O of reactor 1,2 and 3 in an operation cycle are 13. 69,14. 28,2. 51 mg, and 1. 36%,1. 49%, 0. 236%,respectively. The comparative results of reator 1 （continuous aeration） with reactor 2 （intermittent aeration） show their accumulative N2O emission amounts and N2O conversion rates are similar. The accumulative N2O emission amount and the N2O conversion rate of reactor 3 （organic carbon） are about 1/6 of those of reactor 2（without organic carbon）. Aeration treatments have great influence on N2O emission characteristics, for reactor 1, the accumulative N2O emission amount increases persistently, the mean N2O emission rate and dissolved N2O concentration performance continue to decline after the first rise to the maximum. For reactor 2, N2O emissions are mainly in aeration period. The mean N2O emission rate and dissolved N2O concentration reduce after first increase. The N2O conversion rate of single autotrophic nitrogen removal process is lower than those of other biological denitrification processes.