中文摘要：

以合成废水为研究对象,以甘油和生活污水中常见的乙酸钠作为碳源,建立了5个好氧/延长闲置序批式反应器（乙酸钠/甘油比分别为1∶0、4∶1、1∶1、1∶4和0∶1）,考察了各反应器长期运行过程中的除磷效果,并通过分析典型周期内磷及微生物体内各储能物质的变化,初步探究不同乙酸钠/甘油比对除磷性能的影响机理.研究表明,当乙酸钠/甘油比由1∶0逐渐降至4∶1和1∶1时,平均除磷率由90.1%升至92.5%、97.3%.乙酸钠/甘油比继续降至1∶4及0∶1时,系统除磷率降至65.7%、53.4%.当乙酸钠/甘油比为1∶1时,聚磷菌体内合成大量聚羟基脂肪酸酯（PHAs）（2.55 mmol·g-1,以每g VSS积累的C（mmol）计,下同）,为后续磷的吸收及聚磷合成提供更多的能量,而以甘油作为单一碳源时,PHAs合成量最少（0.82 mmol·g-1）,糖原合成量最大（2.56 mmol·g-1,以每g VSS积累的C（mmol）计）.

英文摘要：

To investigate the effect of different influent acetate/glycerol ratios （ 4 ： 0,4：1,1 ： 1,1 ： 4 and 0：4 ） on biological phosphorus （ P ） removal performance of sequencing batch reactor operated as oxic/extended-idle regime. The variations of P and intracellular polymers were analysised to explore the mechanism for the effect of acetate/glycerol ratios. The results showed that 90.1%, 92.5%, and 97.3% of P removal effieiencies were respectively obtained in R1, R2 and R3. However, with acetate/glycerol ratio decreased to 1：4 and 0：4, the P removal effieieeny decreased to 65.7% and 53.4%, respectively. It can be found that 2.55 mmol（C）·g-1（VSS） polyhydroxyalkanoate （PHAs） were synthesized with an acetate/glycerol ratio of 1：1, which can be the energy resource for SOP uptake. In constrast, just 0.82 mmol （C）· g-l（VSS） PHAs but high glycogen （2.56 mmol（ C）·g 1（VSS） ） were accumulated when glycerol was used as the sole carbon source.