溶解氧浓度对SUFR系统脱氮除磷性能影响  

EFFECT OF DO CONCENTRATION ON BIOLOGICAL NITROGEN AND PHOSPHORUS REMOVAL IN SPIRAL UP-FLOW REACTOR SYSTEM

作　　者：李娜[1] 许晓毅[1] 罗固源[1] 杨洋[1] 曹佳[1] 舒为群[1] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点试验室,重庆400045

出　　处：《环境工程》2009年第S1期54-57,共4页Environmental Engineering

基　　金：重庆市科技攻关计划项目(CSTC;2006AB7020);重庆市重大科技攻关计划项目(CSTC;2006AA7003);科技部国际合作项目(2007DFA90660)

摘　　要：采用螺旋升流式反应器(SUFR)处理城市生活污水,考察好氧区DO浓度对系统脱氮除磷的影响。试验设计了好氧区DO浓度分别为:1.5～2.5mg/L(第一种工况)和2.5～3.5mg/L(第二种工况)两种工况。结果表明:DO浓度在1.5～3.5mg/L变化时,DO浓度对系统COD、TP去除效果影响不大,COD去除率>90%,出水COD浓度<33mg/L;TP去除率>91%,出水总磷浓度<0.5mg/L。第二种运行工况下系统脱氮效果较好,总氮、氨氮去除率均值分别为80.01%和97.06%,出水总氮浓度<10mg/L。The spiral up-flow ractor(SUFR)was used to treat domestic wastewater.The effect of DO concentration in the aerobic reactor on biological nitrogen and phosphorus removal was investigated.Text was divided in two different conditions.The DO concentration which was in the upside of the aerobic reactor were 1.5～2.5 mg/L(the first condition)and 2.5～3.5 mg/L(the second condition)separately.The results showed that the DO had no obvious effect on COD and phosphorus removal.The removal rate of TP and COD was more than 90% and 91% separately.The effluent levels of total phosphorus and COD were less than 0.5 mg/L and 33 mg/L separately.Comparing with the first condition,the second condition had better nitrogen removal and the average removal rate of TN and ammonia nitrogen was 80.01% and 97.06% separately,the effluent level of TN was less than 10 mg/L.

关 键 词：螺旋升流式反应器(SUFR) 脱氮除磷 溶解氧浓度 

分 类 号：X703[环境科学与工程—环境工程]