胞外多聚物对污泥的调理  

Sludge conditioning with extracelluar polymeric substances

作　　者：马军军[1] 周迟骏[1] 

机构地区：[1]南京工业大学环境学院,江苏南京210009

出　　处：《化工进展》2010年第7期1369-1372,共4页Chemical Industry and Engineering Progress

摘　　要：采用NaOH法、加热法、蒸汽法、离子交换法4种方法分别提取啤酒厂的剩余活性污泥的胞外多聚物(EPS),并研究其絮凝性能及对污泥的调理作用。结果表明NaOH法提取剩余污泥的EPS絮凝率45.4%,EPS能改善污泥沉降性能,且NaOH法提取的EPS可以使污泥的比阻下降15.2%,加快污泥的过滤速度,从而利于污泥的脱水性能。Polymeric substances（EPS）in brewery surplus activated sludge were extracted and compared with four different methods of NaOH,heating,streaming and iron-exchange.The EPS obtained was used for sludge flocculation and conditioning.The EPS extracted with NaOH method showed 45.4% flocculation rate.The EPS was beneficial for sludge settling and filtering,because of that the specific resistance of sludge could be declined by 15.2% with the EPS extracted with NaOH method.

关 键 词：生物絮凝剂 胞外多聚物 絮凝 脱水 

分 类 号：X703[环境科学与工程—环境工程]