温度对A^2/O工艺脱氮影响的研究  

Influence of Temperature on Nitrogen Removal in A^2/O Process

作　　者：赵丰[1] 戴兴春[1,2] 黄民生[1] 

机构地区：[1]华东师范大学资源与环境科学学院,上海200062 [2]江苏省仪征市水务局,江苏仪征211400

出　　处：《环境科学与技术》2010年第3期49-53,共5页Environmental Science & Technology

基　　金：上海市建委2007年重大科技攻关项目(建科2007-007)

摘　　要：温度与A2/O工艺处理功能密切相关,研究温度变化对系统脱氮效果产生的影响。试验结果表明:温度介于14.5℃～25℃范围内,COD去除率由70%上升至81.4%,温度介于25℃～34.3℃范围内,COD去除率最高达到85%以上,可保证COD稳定和高效的去除效果;最佳脱氮温度范围约为25℃～30℃之间,TN去除率约70%,硝化率达95%,过高或过低的温度条件对脱氮功能均有抑制作用。The temperature and functions of A2/O process were closely related. Influence of temperature variation on nitrogen removal was studied. Results showed that COD removal rate would rise from 70% to 81.4% when temperature changed from 14.5℃ to 25℃ while COD removal rate was up to 85% when temperature changed from 25℃ to 34.3℃, with removal rate stable and efficient. Under the temperature range of 25-30℃ which was the best for denitrification, the removal rate of TN was about 70% and nitrification could reach to 95%. Too high or too low temperature could inhibit function of nitrogen removal.

关 键 词：A2/O工艺 脱氮 温度 

分 类 号：X172[环境科学与工程—环境科学]