升流缺氧/好氧脱氮工艺处理生活污水的研究  

Up-flow Anoxic /Oxic Process for Nitrogen Removal in Domestic Sewage Treatment

作　　者：汪翠萍[1] 魏拓[1,2] 郑明霞[1] 王凯军[1] 

机构地区：[1]清华大学环境学院环境模拟与污染控制国家重点联合实验室,北京100084 [2]中国矿业大学<北京>化学与环境工程学院,北京100083

出　　处：《中国给水排水》2014年第5期88-91,共4页China Water & Wastewater

基　　金：国家高技术研究发展计划(863)项目(2011AA060901)

摘　　要：对传统A/O工艺和升流缺氧/好氧(UA/O)脱氮工艺处理城市生活污水的效果进行了对比研究。结果表明,在HRT、SRT、DO、pH值、混合液回流比、污泥回流比、好氧段MLSS等运行参数相同的情况下,A/O和UA/O两组工艺对COD的去除效果相当,平均去除率分别为88%和89%;对NH3-N的去除效果也相差不大,平均去除率分别为90%和92%;但UA/O工艺对TN的去除效果更好,平均去除率为57%,比A/O工艺高了12%。另外,在进水水质波动较大的情况下,UA/O工艺的抗冲击负荷能力更强,出水水质更稳定。The efficiencies of up-flow anoxic/oxic （UA/O） and conventional A/O process for mu- nicipal domestic sewage treatment were studied comparatively. The results showed that under the same operating parameters, such as HRT, SRT, DO, pH, mixed-liquor return ratio, sludge return ratio and oxie MLSS, the A/O process and the UA/O process had similar COD removal efficiencies, and the aver- age COD removal rates were 88% and 89%, respectively. There was not much difference in NH3 - N removal efficiency between the two processes, the average NH3 - N removal rates were 90% and 92% , respectively. The UA/O process achieved 57% of the average TN removal rate, which was 12% higher than the A/O process. The UA/O process had stronger shock load resistance and more stable effluent quality when fluctuation in influent quality was large.

关 键 词：A O工艺 升流缺氧 好氧工艺 城市生活污水 脱氮 

分 类 号：X703[环境科学与工程—环境工程]