为开发高效除磷脱氮技术，研制了将MBR与A²/O工艺有机集成的新型MB（A²/O）组合工艺。研究 了MB（A²/O）工艺处理城市污水的好氧、缺氧摄磷性能及微生物特性，并分析了其机理。结果表明：在 MB（A²/O）系统中，聚磷菌约占活性污泥总量的20%~40%，其中大量存在能够利用NOX－N作为电子受体 进行反硝化除磷的DPB，约占聚磷菌数量的35. 66%~67. 83%。好氧摄磷的平均速率为2. 30mgP·gMLSS^-1·h^-1，最大摄磷速率为5. 44mgP·gMLSS^-1·h^-1；缺氧摄磷的平均速率为1. 56 mgP·gMLSS^-1·h^-1，最大摄磷速率为1. 94 mgP·gMLSS^-1·h^-1。

Combining membrane bioreactor and A²/O crafts, MB(A²/O) craft is developed to promote the technology with high efficiency for phosphorus and nitrogen removal. This report studies the performances of aerobic and anaerobic phosphorus uptake and the characters of microorganism of municipal sewage treated by MB(A²/O) craft, and analyzes its mechanism as well. The results indicate that the phosphate accumulating organisms take up 20%~40% of active sludge. There are a great deal of DPB which make use of NOx-N as electron acceptor to have denitrifying phosphorus removal and take up approximately 35. 66%~67. 83% of PAOs. The average rate of aerobic phosphorus uptake is 2. 30mgP·gMLSS^-1·h^-1, and the highest rate is 5. 44mgP·gMLSS^-1·h^-1. The average velocity of anaerobic phosphorus uptake is 1. 56 mgP·gMLSS^-1·h^-1, and the biggest rate is 1. 94 mgP·gMLSS^-1·h^-1.