膜生物反应器中污泥EPS的提取方法  

Extraction of extracellular polymeric substances from activated sludge in membrane bioreactor

作　　者：张宏伟[1] 雷鸣[1] 李莹[1] 张雪花[1] 王捷[1] 

机构地区：[1]天津大学环境科学与工程学院,天津300072

出　　处：《化工学报》2008年第6期1531-1534,共4页CIESC Journal

基　　金：国家重点基础研究发展计划项目(2007CB407306-1)~~

摘　　要：The optimum conditions and effectiveness of extraction of extracellular polymeric substances (EPS) from activated sludge in a membrane bioreactor(MBR) were studied under such conditions, thermal, acid, alkaline treatment methods, and it was concluded that both thermal treatment (80℃,45 min) and EDTA bi-sodium treatment were effective.The sludge cell was damaged seriously by NaOH treatment (1 mol·L-1,2 h), but when formaldehyde was added, the nucleic acid concentration was reduced by 21.5%, and the damage to sludge cell was then decreased.The optimum conditions and effectiveness of extraction of extracellular polymeric substances （EPS） from activated sludge in a membrane bioreactor（MBR） were studied under such conditions, thermal, acid, alkaline treatment methods, and it was concluded that both thermal treatment （80℃,45 min） and EDTA bi-sodium treatment were effective.The sludge cell was damaged seriously by NaOH treatment （1 mol·L^-1,2 h）, but when formaldehyde was added, the nucleic acid concentration was reduced by 21.5%, and the damage to sludge cell was then decreased.

关 键 词：膜生物反应器 胞外聚合物 EDTA二钠 热提取 NaOH提取 甲醛 

分 类 号：X703.1[环境科学与工程—环境工程]