N_2H_4强化厌氧氨氧化机理及动力学特性  

THE MECHANISM AND DYNAMIC CHARATERISTIC OF N_2H_4 ENHANCING ANAEROBIC AMMONIUM OXIDATION(ANAMMOX) PROCESS

作　　者：蔡庆[1,2] 丁佳佳[3] 

机构地区：[1]重庆工程职业技术学院矿业与环境工程学院,402260 [2]重庆大学环境科学系,400030 [3]重庆市环境科学研究院,重庆401147

出　　处：《水处理技术》2015年第5期73-77,共5页Technology of Water Treatment

基　　金：重庆市教委科学技术研究项目(KJ1403202)

摘　　要：在SBR反应器中接种全自养脱氮污泥成功启动厌氧氨氧化过程,总氮去除速率和总氮去除效率分别达到(0.711±0.021)kg/(m3·d)和(88.6%±1.6%)。向受到高浓度NO2-抑制的反应器进水中长期添加N2H4,系统脱氮性能迅速恢复,总氮去除速率增加到(0.833±0.027)kg/(m3·d),同时NO3-产生量减少约21%。添加适量N2H4可提供额外的电子供体强化细胞增殖,增加厌氧氨氧化速率的同时减少NO3-的产生,因此可快速解除NO2-的抑制。采用Andrews抑制方程描述N2H4对厌氧氨氧化过程的影响,拟合结果表明N2H4半饱和常数为0.68 mg/L,N2H4抑制常数为26.96 mg/L。Inoculating with completely autotrophic nitrogen removal （CANON） sludge, anaerobic ammonium oxidation （ANAMMOX） process was successfully started-up in SBR. The total nitrogen removal rate and the total nitrogen removal efficiency reached （0.711 ±0.021） kg/（m^3 .d） and （88.6%±1.6%）, respectively. The long-term N2H4 addition to ANAMMOX SBR inhibited by NO2- recovered and even enhanced their nitrogen removal capacity. The total nitrogen removal rate increased to （0.833±0.027） kg/ （m^3. d）, and the production of NO3- reduced about 21%.simultaneously. Extra electron donor for the growth of bacteria was provided through N2H4 addition, enhancing the rate of the ANAMMOX process and reducing the production of NO3-, and therefore the inhibition of NO2- was restored rapidly. Andrews inhibition model was used to describe the effect of N2H4 on ANAMMOX process. The curve fitting result showed that the half-saturation coefficient and the inhibition coefficient of N2H4 were 0.68 mg/L and 26.96 mg/L, respectively.

关 键 词：厌氧氨氧化 N2H4 强化 动力学特性 

分 类 号：X703[环境科学与工程—环境工程]