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对真空死端过滤、气压死端过滤、轴向流十字流过滤、旋转流十字流过滤等不同过滤方式下的过滤速率衰减行为进行了系统的研究，建立了相应的过滤速率衰减模型、以及相应模型系数与悬池液浓度、操作压力、雷诺数和欧拉数等影响因素的关系式。结果表明，死端过滤速率衰减模型中过滤速率与时间呈幂函数关系、而十字流过滤速率衰减模型中过滤速率与时间则呈一次函数关系，死端过滤时悬浮液浓度和气压过滤压力对其过滤速率衰减模型系数的影响均呈三次函数关系，在十字流过滤时悬浮液浓度、操作压力以及雷诺数对模型系数ｂ的影响均呈线性关系，轴向流十字流过滤速率衰减模型系数ｂ与欧拉数呈反比，而旋转流十字流过滤时则模型系数ａ与欧拉数呈反比关系。十字流过滤中，旋转流方式同轴向流方式相比，过滤速率衰减趋势较陡，但其初始通量高，在较长时间内都能以高于轴向流过滤通量的状态运行。
The decay behavior of filtration rate under different filtration methods, such as vacuum dead end filtration, dead end filtration, axial cross flow filtration, swirling cross flow filtration, was studied systematically. The corresponding filtration rate attenuation model was established, Model coefficients and suspension cell concentration, operating pressure, Reynolds number and Euler number and other influencing factors. The results show that the filtration rate in the dead-end filtration rate decay model shows a power function relationship with time, while the filtration rate in the cross-flow filtration rate decay model shows a linear relationship with the time. The concentration of the suspension at the dead end filtration and the filtration pressure The coefficients of filtration rate decay model showed a cubic function. The results showed that the concentration of suspension, operating pressure and Reynolds number had a linear relationship with the model coefficient b in the cross flow filtration. The coefficient b of axial flow cross flow filtration rate decay model, The Euler number is inversely proportional to, while the cross-flow filtration of the swirling flow is inversely proportional to the Euler number for the model coefficient a. In the cross flow filtration, the decay tendency of the filtration rate is steeper than that of the coaxial flow by the swirling flow method, but its initial flux is high and can be operated at a higher flow rate than the axial flux in a long time.