Role of extracellular exopolymers on biological phosphorus removal  

作　　者：LIU Ya-nan XUE Gang YU Shui-li ZHAO Fang-bo 

机构地区：[1]School of Environmental Science and Engineering, Donghua University, Shanghai 200051, China [2]School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China

出　　处：《Journal of Environmental Sciences》2006年第4期670-674,共5页环境科学学报（英文版）

基　　金：TheFokYingTungEducationFoundation(No.94004),theShanghaiNaturalScienceFoundation(No.04ZR14010)andtheYoungTeacherFoundationofDonghuaUniversity(No.113-10-0044065)

摘　　要：Three sequencing batch reactors supplied with different carbon sources were investigated. The system supplied with glucose gained the best enhanced biological phosphorus removal although all of the three reactors were seeded from the same sludge. With the measurement of poly-β-hydroxyalkanoate （PHA） concentration, phosphorus content in sludge and extracellular exopolymers （EPS） with scanning electron microscopy （SEM） combined with energy dispersive spectrometry （EDS）, it was found that the biosorption effect of EPS played an important role in phosphorus removal and that the amount of PHA at the end of anaerobic phase was not the only key factor to determine the following phosphorus removal efficiency.Three sequencing batch reactors supplied with different carbon sources were investigated. The system supplied with glucose gained the best enhanced biological phosphorus removal although all of the three reactors were seeded from the same sludge. With the measurement of poly-β-hydroxyalkanoate （PHA） concentration, phosphorus content in sludge and extracellular exopolymers （EPS） with scanning electron microscopy （SEM） combined with energy dispersive spectrometry （EDS）, it was found that the biosorption effect of EPS played an important role in phosphorus removal and that the amount of PHA at the end of anaerobic phase was not the only key factor to determine the following phosphorus removal efficiency.

关 键 词：biological phosphorus removal extracellular exopolymers BIOSORPTION 

分 类 号：X703[环境科学与工程—环境工程]