磁力搅拌/阳离子交换树脂法提取胞外聚合物  

Extracting EPS in Activated Sludge Using Magnetic Stir and Cation Resin Exchange

作　　者：傅金祥[1] 由昆[1] 琚冉[1] 周伟伟[1] 李敬宝[1] 

机构地区：[1]沈阳建筑大学市政与环境学院,辽宁沈阳110168

出　　处：《中国给水排水》2006年第20期84-86,共3页China Water & Wastewater

基　　金：辽宁省自然科学基金资助项目(20022007)

摘　　要：采用磁力搅拌—阳离子交换树脂法提取了活性污泥中的胞外聚合物(EPS)。以糖类、蛋白质、核酸含量为EPS提取效果的评价指标,确定了最佳提取条件:搅拌时间为4h,搅拌转速为1000r/min,在污泥浓度MLSS为12.6g/L时树脂用量为15g。与传统高速离心法的对比研究表明,该方法具有较高的EPS提取效率,测定结果的相对标准偏差<3%。Extracellular polymeric substances （EPS） in activated sludge were extracted by magnetic stir and H-type cation resin exchange, and the content of protein, polyose and nucleic acid were the evaluating indexes. The optimized conditions for extracting were mixing time of 4 h, mixing speed 1 000 r/min, the cation resin dosage of 15 g when MLSS is 12.6 g/L. It has better extracting efficiency when comparing with traditional high-speed centrifugal method, the relative standard deviation （RSD） is less than 3%.

关 键 词：活性污泥 胞外聚合物 磁力搅拌 离子交换树脂 

分 类 号：X703[环境科学与工程—环境工程]