低溶解氧SBR除磷工艺研究  

Study on Phosphorus Removal Process by Using SBR at Low DO Level

作　　者：陈滢[1] 彭永臻[1] 杨向平[2] 曾薇[1] 刘秀红[3] 

机构地区：[1]北京工业大学环境与能源工程学院,北京100022 [2]北京市城市排水公司,北京100022 [3]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090

出　　处：《中国给水排水》2004年第8期40-42,共3页China Water & Wastewater

基　　金："十五"国家科技攻关课题(2002BA806B04);国家自然科学基金资助项目(20377003);北京市教委科研项目(01KJ-001)

摘　　要：　试验研究了低溶解氧条件下SBR的除磷性能。结果表明,在全程低氧曝气的SBR系统内聚磷菌可得到富集,并出现了明显的放磷、过量吸磷现象。污泥负荷对COD去除率和除磷效率影响较大,除磷最佳的污泥负荷为0.26kgBOD/(kgMLSS·d),其时COD去除率为85%,除磷效率为96%,出水PO3-4-P<1.0mg/L;最佳污泥负荷下的污泥沉降性能良好,污泥负荷过高会导致非丝状菌污泥膨胀。Study was made on phosphorus removal effect at low DO level by using SBR system.The result shows that,the concentration of phosphorus accumulation bacteria can be obtained in SBR system at all-time low DO aeration,significant phosphorus release and luxury phosphorus uptake also occurs under this condition.Sludge load has greater influence on COD and phosphorus removal rate,the optimum sludge load for phosphorus removal is 0.26 kgBOD/(kgMLSS·d),96% of phosphorus removal rate,85% of COD removal rate and effluent PO^(3-)_4-P <1.0 mg/L can be achieved at that condition.The sludge also shows good settleability at the optimum sludge load,and the higher load will lead to non-filamentous bacteria sludge bulking.

关 键 词：SBR 低溶解氧 除磷 污泥负荷 非丝状菌污泥膨胀 

分 类 号：X703.1[环境科学与工程—环境工程]