管式膜过滤过程中的流体力学研究

摘要

The relation among inlet flux, outlet pressure, pressure drop and permeate flux in the process of tubular membrane filtration is studied by experiment. The results show that permeate energy consumption is lower when outlet pressure is 0.1-0.15 MPa, and permeate energy consumption increasing trend becomes slowly when inlet flux is up to 1 000-1 200 L/h. By calculation and derivation, the formula of pressure and length and the formula of permeate flux and pressure are obtained.%通过实验方法，研究了管式膜在过滤过程中进口流量、出口压力、压力降、膜通量等工艺参数之间的相互关系.实验结果显示，出口压力在0.1~0.15 MPa时，管式膜透过液单位能耗较低；进口流量在1000~1200 L/h时，管式膜单位能耗增加较慢，是较优的运行工艺参数.通过对实验结果进行计算和推导，得到膜管压力与膜管长度的关系和通量与压力的关系.