Mg^(2+)对SBR中好氧颗粒污泥培养的影响研究  

Effect of Mg^(2+) on Cultivation of Aerobic Granular Sludge in SBR

作　　者：刘倩倩[1] 李小明[1] 杨麒[1] 曾光明[1] 胡劲梅[1] 贾斌[1] 刘医琳[1] 朱小峰[1] 

机构地区：[1]湖南大学环境科学与工程学院,湖南长沙410082

出　　处：《中国给水排水》2008年第17期31-35,共5页China Water & Wastewater

基　　金：国家自然科学基金资助项目(50478054);国际科技合作重点项目(2004DFA06200)

摘　　要：在三个SBR反应器中分别投加0、10和100 mg/L的镁离子,研究了镁离子对好氧颗粒污泥形成的影响。结果表明,镁离子的添加有利于颗粒污泥的形成,促进了各种微生物的生长,提高了污泥浓度,并且促进了胞外多糖的生成。10 mg/L的Mg2+更有利于颗粒污泥的形成和成长,其颗粒化程度高且平均粒径大,并使颗粒污泥的形成时间从32 d缩短到18 d,而100 mg/L的Mg2+对颗粒污泥的促进效果不如10 mg/L的明显。The effect of Mg^2＋ on the formation of aerobic granular sludge was investigated using SBR with 0, 10 and 100 mg/L Mg^2＋. The results demonstrate that Mg^2＋ can benefit the formation of granular sludge, promote the growth of different microorganisms, enhance the sludge concentration and accelerate the production of extracellular polysaccharide. The addition of 10 mg/L Mg^2＋ is even more favorable for the formation and growth of granular sludge with higher granulation rate and larger average size, and decreases the formation time of granular sludge from 32 d to 18 d. However, the effect of 100 mg/L Mg^2＋ is not as great as that of 10 mg/L Mg^2＋.

关 键 词：好氧颗粒污泥 镁离子 SBR 

分 类 号：X703[环境科学与工程—环境工程]