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.
出处
《化工学报》
EI
CAS
CSCD
北大核心
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)~~
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
membrane bioreactor
extracellular polymeric substances
EDTA bi-sodium
thermal treatment
NaOH treatment
formaldehyde
