A/O工艺生物除磷和好氧反硝化效果及影响因素研究  

Research on the Effect and Factors Influencing Biological Phosphorus Removal and Aerobic Denitrification by Using A/O Process

作　　者：李亚静[1] 孙力平[1] 

机构地区：[1]天津城市建设学院环境与市政工程系,天津300384

出　　处：《环境保护科学》2007年第4期19-21,共3页Environmental Protection Science

基　　金：天津市重大科技攻关项目(043112011);建设部重点科技项目(04227)

摘　　要：采用A／O工艺处理低碳源城市污水，研究了生物除磷和好氧反硝化脱氮效果及其影响因素。试验结果表明：①磷的出水浓度低于0．8mg／L，去除率达到92％～98％；②影响好氧反硝化的主要因素为DO和HRT。当DO控制在2mg／L左右，HRT控制在6h时，好氧反硝化效果最好。增加了脱氮效率，减少了碳源和需氧量。NH^4＋ -N去除率高达94％，总脱氮率可高达76％左右。Effect and the factors influencing biological phosphorus removal and aerobic denitrification were studied using A/O process treat municipal wastewater with low carbon source. The results showed that：（1） Effluent target of Phosphorus is under 0. 8mg/L, the removal rate can reach 92%-98% ; （2）DO and HRT are the key factors influencing aerobic denitrification. The denitrification effect is the best when DO= 2.0mg/L, HRT= 6h, which the TN removal ratio is increased and the quantity of carbon source and oxygen demand is decreased. Finally, NH^＋ -N removal ratio can reach 94%, and TN removal ratio can reach about 76%.

关 键 词：A/O工艺 低碳源城市污水 生物除磷 好氧反硝化 DO HRT 

分 类 号：X703.1[环境科学与工程—环境工程]