环流塔式曝气废水生物除磷研究  

PHOSPHORUS REMOVAL BY ACTIVATED SLUDGE IN A COLUMN REACTOR

作　　者：杨海光[1] 江田民[1] 陈筛林[1] 丁富新[1] 

机构地区：[1]清华大学化工系,北京100084

出　　处：《环境工程》2003年第2期12-15,共4页Environmental Engineering

基　　金：国家"九五"攻关项目 (99 31 5 0 8 0 3)

摘　　要：利用环流曝气装置 ,对活性污泥法废水除磷的过程进行了实验研究。实验表明 ,环流曝气塔在处理效果上优于鼓泡塔 ;处理过程适合的温度范围在 2 5℃左右 ;好氧阶段空气气速的增加可以加速反应的进行 ,厌氧阶段氮气气速的增加利于磷的释放。实验取醋酸盐作为碳源 ,停留时间 7h后 ,CODCr去除效率达到 90 %以上 ,磷的去除率达到了70 %。The phosphours removal by activated sludge was studied in a column reactor with a porous gas distributor.The results indicated that the column reactor had higher efficiency than the traditional bubble aeration column and the most suitable aeration temperature was around 25 ℃.It also indicated that the removal of phosphorus was affected by raising gas velocity during the aerobic/anaerobic process.Acetate was used as the carbon source in this study and with HRT being 7h the removal efficiency of COD_ Crwas move than 90%,the removal efficiency of phosphorus was 70%.

关 键 词：环流反应器 生物除磷 污水处理 活性污泥 环流曝气装置 

分 类 号：X703[环境科学与工程—环境工程]