复合生物反应器亚硝酸型同步硝化反硝化  

Simultaneous Nitrification and Denitrification via Nitrite in a Sequence Hybrid Biological Reactor

作　　者：王建龙[1] 彭永臻[1] 王淑莹[1] 高永青[1] 刘莹[1] 

机构地区：[1]北京工业大学 环境与能源工程学院,北京100022

出　　处：《北京工业大学学报》2007年第12期1310-1314,共5页Journal of Beijing University of Technology

基　　金："十一五"科技支撑计划项目(2006BACl91303);高等学校博士学科点专项科研基金(20060005002);北京市属高等学校创新团队项目(05005013200504).

摘　　要：以实际生活污水为对象,利用有效容积为12L的间歇式复合生物反应器(填料体积填充比为30%),通过控制ρ(DO)稳定实现了亚硝酸型同步硝化反硝化脱氮.试验结果表明,在同步硝化反硝化条件下,随着ρ(DO)的升高,亚硝化率逐渐降低,总氮去除率也呈下降趋势.曝气结束,ρ(DO)>4 mg/L时,系统的亚硝化率和总氮去除率均小于50%;当ρ(DO)为2 mg/L,温度维持在(28±1)℃,硝化过程中亚硝化率始终维持在85%以上,ρ(NH_4^+ -N)去除率大于98%,总氮去除率在75%左右.因此,在试验条件下,只要控制曝气量,使得曝气结束时反应器内ρ(DO)为2 mg/L,就可实现稳定的亚硝酸型同步硝化反硝化生物脱氮.Hybrid biological reactor （HBR） was operated in a sequence, which available capacity was 12 L （filled media 30 %, v/ v）, simultaneous nitrification and denitrification （SND） via nitrite were achieved in a single reactor by controlling p （DO） （at the end of the aeration period） concentration. The result showed that： with the increase of ρ（DO）, the rate of the ρ（NO2^- -N）/ρ（NOx^- -N） and the removal efficiency of TN were decreased. When the p（DO）〉4 mg/L the rate of the ρ（NO2^- -N）/ρ （NOx^ -N） and the removal efficiency of p（TN） were less than 50%. The rate of the p（NO2^- -N）/ρ（NOx^- -N） above 85%, the removal efficiency of ρ（NH4＋ -N） was over 98%, and the removal efficiency of p（TN） was about 75%, by controlling ρ（DO） around 2 mg/L, and temperature at （28 ± 1）℃. In conclusion, stable nitrogen removal from wastewater by SND via nitrite at normal temperature could be achieved so long as ρ（DO） was controlled at 2 mg/L.

关 键 词：同步硝化反硝化 亚硝酸盐积累 复合生物反应器 脱氮 

分 类 号：X703.1[环境科学与工程—环境工程]