中文摘要：

针对自生动态膜．生物反应器内部结构进行了动力学运行的理论分析，通过能量平衡机理对自生动态膜-生物反应器体系进行了讨论，基于体系总能耗最小的原理推导出液相循环流动方程．建立的混合液流速与清水流速之间的关系模型可以很好地反映混合液流速与清水流速之间的关系．通过建立的清水流速测定方法得出反应器结构与清水膜面错流流速之间的关系：调整降流区横截面积（Ad）与底部通道截面积（Ab）的比值为0．7以及升流区横截面积（Ar）与顶部通道截面积（Au）的比值为0．9，调整降流区横截面积与升流区横截面积的比值在1．2—1．5范围内以及增加反应器的有效高度日。都可以在不改变曝气强度的条件下增加膜面错流速度，此结果与推导出的循环流动方程可以很好地吻合．

英文摘要：

The local hydrodynamic properties of the configuration in serf-forming dynamic membrane bio-reactor（SFDMBR） were investigated. Basing on energy balance analysis, we discussed the hydrodynamics of SFDMBR and established its loop flow equations according to the minimum energy consumption principle. Using clear water as simulating mixed liquor, the cross-flow velocity of the SFDMBR was gained by the microscopy and Pitot tube testing method. The results fitted well with the loop flow equation. In the view of energy consumption, the ways for optimizing the structure of the reactor are： decreased the ratio of Ad/Ab to 0.7 and Ar/Au to 0.9, adjusted the ratio of Ad/Ar into 1.2 - 1.5 and increased the value of HD.