化工进展2015，Vol.34Issue(12)：4198-4202,5.DOI:10.16085/j.issn.1000-6613.2015.12.011
限氧条件下亚硝化的稳定运行及动力学
Stable operation and kinetics of partial nitrification under limited oxygen concentration
摘要
Abstract
The effects of ammonium nitrogen loading rate,free ammonia and free nitrous acid on ammonium nitrogen removal efficiency,nitrite accumulation ratio and nitrite nitrogen accumulation rate were studied with a sequencing batch reactor under limited oxygen concentration(0.2—0.3mg/L). The substrate inhibition kinetics of ammonium oxidizing bacteria was also analyzed. The fluctuations of performance of reactor were observed due to the influence of shock loading and inhibition of high free ammonia when ammonium nitrogen loading was gradually improved. The recovery process was slower with higher load. Ammonium nitrogen loading rate of 3.60kg/(m3·d) and nitrite nitrogen accumulation rate of 2.98kg/(m3·d) were attained with nitrite accumulation ratio maintained at around 85%. High free ammonia(24.4—85.8mg/L)and limited dissolved oxygen are the main factors to achieve stable partial nitrification. The Haldane model was used to describe the substrate inhibition of partial nitrification and the results show that the maximum specific ammonium nitrogen oxidizing rate is 6.71gN/(gVSS·d). Affinity constant and inhibition constant for free ammonia are 3.2mg/L and 27.8mg/L,respectively.关键词
序批式反应器/亚硝化/高氨氮废水/限氧/基质抑制模型Key words
sequencing batch reactor(SBR)/partial nitrification/ammonium-rich wastewater/limited oxygen concentration/substrate inhibition kinetic model分类
资源环境引用本文复制引用
胡晓娜,戴晓虎,曹达文,陈文静,杨殿海..限氧条件下亚硝化的稳定运行及动力学[J].化工进展,2015,34(12):4198-4202,5.基金项目
国家水体污染控制与治理科技重大专项项目(2013ZX07315-001). （2013ZX07315-001）
