安徽农业科学2012，Vol.40Issue(33)：16325-16327,3.
不同氨氮浓度对部分亚硝化过程中N2O释放的影响
Effects of Different Concentrations of Ammonia Nitrogen on N2O Emission in the Process of Partial Nitrification
摘要
Abstract
[Objective] The study aimed +to discuss the effects of different concentrations of ammonia nitrogen on N20 emission in the process of partial nitrification. [Method] By using a sequencing batch biofilm reactor (SBBR) under intermittent aeration, the influences of various concentrations of influent ammonia nitrogen on nitrous oxide ( N20) emission from partial nitrification were analyzed. [ Result] When the concentration of influent ammonia nitrogen varied from 200 to 400 mg/L, the changing trends of DO and ORP value were consistent during the process of partial nitrification, and the concentration ratio of NO2~ -N to NH4+ -N in the effluent reached 1:1, with lower NO3 -N level. In addition , ammonia nitrogen concentration in the influent had a significant effect on N2 0 emission in the process of partial nitrification, that is, the higher the ammonia nitrogen concentration, the more the N2O emission. When ammonia nitrogen concentration was 400 mg/L, N2O emission was up to about 37 mg. [Conclusion] N2O emission in the process of partial nitrification might be related to the concentration of NH4+ and NO2-.关键词
氨氮/部分亚硝化/SBBR/N2OKey words
Ammonia nitrogen/ Partial nitrification/ SBBR/ N2O分类
农业科技引用本文复制引用
田琳,孔强,张建,苗明升..不同氨氮浓度对部分亚硝化过程中N2O释放的影响[J].安徽农业科学,2012,40(33):16325-16327,3.基金项目
国家水体污染控制与治理科技重大专项(2008ZX07209-006,2009ZX07210-009). （2008ZX07209-006,2009ZX07210-009）
