Enhanced Biological Phosphorus Removal in SBR Using Glucose as a Single Organic Substrate
JIANG Yi-feng 1LI Xiang-kun 2FENG Xiao-yu 2WANG Shu-tao 3WANG Bao-zhen 3LIU Ya-nan 4CHEN Jian-meng1
作者信息
- 1. College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, China
- 2. College of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
- 3. Hangzhou Institute of Agriculture Science, Hangzhou 310024. China
- 4. School of Environmental Science and Engineering, Donghua University, Shanghai 200051, China
- 折叠
Abstract
Enhanced biological phosphorus removal (EBPR) was investigated in an anaerobic/aerobic sequencing batch reactor (SBR) supplied with glucose as a single organic substrate. The results illustrated that EBPR process could also occur successfully with glucose other than short chain fatty acids (SCFAs). High phosphorus release and polyhydroxyalkanoate (PHA) accumulation in the anaerobic phase was found vital for the removal of phosphorus during the aerobic phase. The measurement of intracellular reserves revealed that glycogen had a higher chance to replace the energy role of poly-P under anaerobic conditions. Moreover, glycogen was also utilized as the carbon source for PHA synthesis. as well as a reducing power as reported earlier. The accumulated PHA in this system was mainly in the form of poly-hydroxyvalerate (PHV) instead of polyhydroxybutyrate (PHB), and was inferred to be caused by the excess reducing power contained in glucose. Lactate as a fermentation product was also found released into the bulk solution. Applying fundamental biochemistry knowledge to the experimental results, a conceptual biochemical model was developed to explain the metabolism of the glucoseinduced EBPR.
Key words
enhanced biological phosphorus removal (EBPR), sequencing batch reactor (SBR), glucose, glycogen, poly-hydroxyalkanoate (PHA)引用本文复制引用
基金项目
浙江省杭州市科技发展计划(2007C13081)
浙江省杭州市科技发展计划(20062912A06)
出版年
2008
国家科技期刊平台
NSTL
维普
万方数据