Optimization of Hollow Fiber Membrane Modules and Operating Conditions for Drinking Water Production

摘要

Submerged membrane has become one of the most competitive ways of water treatment method due to the simplicity and resistance against membrane fouling compared to crossflow filtration. Since the efficiency of hollow fiber membrane depends on the dimensions of the fibers as well as filtration conditions, modeling filtration behavior of hollow fibers is important for improving design and operation of the hollow fiber system. In this work, a theoretical model based on critical flux concept was developed to simulate filtration resistance and axial pressure drop along the fiber in drinking water treatment.rnDepending on the characteristics of major foulant and fouling mechanisms, the behaviors of transmembrane pressure (TMP) were quite different. The major membrane fouling in surface water treatment was cake formation. Based on the model calculation, simulation of membrane system was carried out under various conditions. It is likely that the model is useful to optimize the design and operation of hollow fiber membrane system.