碳氮比对短程硝化反硝化的影响  

Study on the Shortcut Nitrification Process under the Effect of Carbon Nitrogen Radio

作　　者：傅金祥[1] 徐岩岩[1] 

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2009年第4期728-731,共4页Journal of Shenyang Jianzhu University：Natural Science

基　　金：辽宁省科技厅计划项目(2007219010);沈阳建筑大学市政与环境省级重点实验室开放基金项目(HJ-200603)

摘　　要：目的碳氮比是影响短程硝化反硝化生物脱氮工艺系统的主要因素之一,为了找到适合短程硝化反硝化的ρ(C)/ρ(N).方法采SBR反应器,用传统活性污泥作为种泥驯化污泥,以模拟生活污水为处理对象,进行动态试验并通过改变系统的ρ(C)/ρ(N),考察ρ(C)/ρ(N)对系统典型周期中氮元素的变化、NO2--N积累率的影响及系统运行周期内氮的缺失原因.结果试验表明,系统稳定运行期间,ρ(C)/ρ(N)=4.37时,氨氮去除率为80.59%,亚硝酸盐氮的积累率为87.31%;ρ(C)/ρ(N)=6.1时,氨氮去除率为82.8%,亚硝酸盐氮的积累率为88.45%;ρ(C)/ρ(N)=8.2时,氨氮去除率为72.5%,亚硝酸盐氮的积累率为77.65%.结论短程硝化反硝化所需的ρ(C)/ρ(N)不是越高越好,它应该控制在6左右.ρ（C）/ρ（N） is one of the primary influnencing factors in the denitrogenation system of short-nitrification-denitrification biology. With the traditional activated sludge as the acclimated sludge of seed sludge in the SBR reactor and with simulated domestic wastewater as treatment object, the changes of nitrogen element in the typical cycle and NO2^- -N accumulation rate in the system are investigated by changing the dy-namic test system ρ（C）/ρ（N）, and the causes of nitrogen deficiency during system operation cycle are discussed. The results show that when the system is in stable operation and ρ（C）/ρ（N） = 4. 37, the degradation rate of ammonia-nitrogen is 80. 59 % and NO2-N accumulation rates are 87.31% ; when ρ（C）/ρ（N） =6. 1, the degradation rate of ammonia-nitrogen is 82. 8% and NO2^--N accumulation rates are 88.45% ;when ρ（C）/ρ（N） = 8.2, the degradation rate of ammonia-nitrogen is 72. 5 % and NO2^-N accumulation rates are 77.65 %. The influence of system degradation rate of TN and pH of different ρ（C）/ρ（N）） are also investigated. The demand of ρ（C）/ρ（N） is not the higher the better but it needs to be controlled about at 6.

关 键 词：SBR 传统活性污泥 模拟生活污水 ρ(C)/ρ(N) 

分 类 号：TU991.2[建筑科学—市政工程]