活性污泥外循环SBR系统外循环污泥释磷能力研究  

Study on Phosphorus Discharge Capability of External Recycle ofActivated Sludge in SBR System Using External Recycle of Activated Sludge

作　　者：杨琴[1] 吉芳英[1] 罗固源[1] 

机构地区：[1]重庆大学城市建设与环境工程学院,重庆400045

出　　处：《重庆环境科学》2002年第6期57-59,62,共4页Chongqing Environmental Science

基　　金：建设部科研项目 (0 1 - 2 - 0 33);重庆市科委应用基础研究项目 (0 1 - 691 2 )

摘　　要：本试验以 HAc作为厌氧释磷的碳源有机物 ,以 SBR系统外循环污泥作为研究对象 ,探索外循环活性污泥的厌氧释磷能力和获取高浓度富磷污水的途径。试验表明 :厌氧过程中聚磷菌吸收 HAc和释放 PO43+ 的分子比为 1∶ 1,即吸收 2 .0 6mg HAc- COD将诱导 1mg P释放 ;单位时段比污泥的平均释磷速率 VP=6.5 4· t- 0 .76 ;理想的厌氧时间为60～ 180 min。In this test,acetic acid supplies carbon resource for the process of anaerobic phosphorus discharge and external recycle of activated sludge in SBR system is a researchful object.The test studied anaerobic phosphorus discharge capability of external recycle of activated sludge and how to attain high phosphatic sewage.The results showed that phosphate accumulating bacteria(PAB)absorbed 1 molecule acetic acid and discharged 1 molecule phosphate simultanelusly,namely PAB discharged 1 mg phosphate through absorbing 2.06mgHAc-COD;the average rate of phosphorus discharge in unit sludge and time V p=6.54·t -0.76;the optimal time of anaerobic phosphorus discharge was 60min～180min and the concentration of phosphate could be increased through reducing reactor's bulk.

关 键 词：生物除磷 SBR 活性污泥 厌氧过程 废水处理 

分 类 号：X703[环境科学与工程—环境工程]