ASBR厌氧氨氧化反应器的快速启动及脱氮原理分析  

Fast start-up and denitrified principle analysis of ANAMMOX in ASBR

作　　者：王晓霞[1] 于德爽[1] 李津[1] 李宁宁[1] 刘保妍[1] 赵丹[1] 李伟刚[1] 

机构地区：[1]青岛大学环境科学与工程系,青岛266071

出　　处：《环境工程学报》2012年第6期1834-1840,共7页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(51078191)

摘　　要：以城市生活污水为基本水质进行配水,采用ASBR研究了厌氧氨氧化反应器的快速启动过程及脱氮性能。实验条件如下:T为(35±1)℃、HRT为24 h、pH为7.2～7.5,进水NH4+-N、NO2--N浓度为40～160 mg/L,TN负荷为0.08～0.34 kg TN/(m3.d),按2∶1比例混合接种好氧短程硝化污泥和厌氧氨氧化污泥,经49 d运行成功启动厌氧氨氧化反应器,并实现稳定运行。实验结果表明:稳定运行期NH4+-N、NO2--N去除率分别达96%和98%;NH4+-N、NO2--N去除量与NO3--N生成量比值为1∶1.05∶0.29,较为接近理论值;成功启动的反应器出水pH高于进水;系统TN去除率平均值为79.7%;反应器内存在反硝化与厌氧氨氧化的协同作用,实现了部分COD去除;污泥由深棕色絮状变成红褐色颗粒状,经SEM扫描电镜观察污泥菌群种类单一,多为球状菌,有漏斗状缺口,具有典型氨氧化菌形态特征。With the influent water distribution based on the municipal sewage, the fast start-up and denitrification performance of ANAMMOX reaction in ASBR was studied. The experimental conditions were as follows： the temperature of （35 ± 1 ）℃, HRT of 24 hours, influent pH of 7.2 - 7.5, influent NH4＋ -N and NO2--N con- centrations of both 40 -160 mg/L, TN volumetric load of 0.08 -0.34 kg TN/（m3 · d）. Inoculating the mixture of aerobic short-cut nitrification sludge and anaerobic ammonium oxidation sludge with the proportion of 2： 1, the AN- AMMOX reaction was successfully started-up in 49 days and realized a stable operation. The experimental results show that at the stable state the average NH4＋ -N,N02--N removal rates were 96% and 98%, respectively; the ratio of NH4 -N,NO2- -N removal and NO3--N formation was 1： 1.05： 0.29, which was very close to the theoretical value. After been started-up, the reactor＇ s effluent pH value was higher than influent, the average TN removal rate was 79.7%. The synergistic effect of denitrifying and ANAMMOX realized part of COD removal; the sludge changed from floeeulent dark-brown to granular red-brown, the dominant flora bacteria was mostly spherical with a funnel- shaped gap, it had the typical characteristic of ammonia-oxidizing bacteria.

关 键 词：ASBR 厌氧氨氧化 启动 脱氮原理 颗粒污泥 

分 类 号：X703.1[环境科学与工程—环境工程]