DO浓度对OGO系统同步硝化反硝化脱氮的影响  

Effects of DO Concentration on Simultaneous Nitrification and Denitrification in OGO Reactor System

作　　者：范寅[1] 罗固源[1] 张园[1] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045

出　　处：《三峡环境与生态》2010年第3期1-4,7,共5页Environment and Ecology in the Three Gorges

基　　金：国家自然科学基金资助项目(50378095)

摘　　要：采用改良OGO工艺处理模拟城市生活污水,考察了溶解氧(DO)浓度对其同步硝化反硝化(SND)脱氮的影响。试验设计了好氧区中段DO浓度在1.0 mg/L、2.0 mg/L以及3.8 mg/L左右的三种工况,研究了OGO系统同时硝化反硝化脱氮的效果。结果表明,好氧区中段最佳DO浓度为2.0 mg/L左右,此时系统的外环发生明显的同步硝化反硝化现象,系统的硝化和反硝化效果较好,其对TN的平均去除量占OGO系统对TN去除量的48.89%,系统对TN的平均去除率达到74.80%以上。The OGO reaclor was used to treat domestic wastewater. The effect of DO concentration on simultaneous nitrification and denitrification （SND） in the ruiddle of aerobic area was investigated. Different DO concentration in the middle of aerobic area was designed ,that was 1.0 mg/L,2.0 mg/L and 3.8 mg/L, to study the effect of the ni trogen removal on simultaneous nitrification and denitrificalion in OGO reactor system. The results showed that the optimal DO concentration in the middle of aerobic area is about 2.0 mg/L. At this level, obvious phenomenon of simultaneous nitrification and denitrification occurs in the system, the OGO system can obtain favorable nitrificationdenitrifieation. The proportion of SND nitrogen removal in the total nitrogen removal is about 48.89 %, and the average removal efficiency of TN in OGO system is over 74.80%.

关 键 词：OGO反应器 DO 同步硝化反硝化 生物脱氮 

分 类 号：X703.1[环境科学与工程—环境工程]