Effects of Module Configuration on Hollow Fiber Filtration Performance

To optimal design the hollow fiber membrane module, four groups experiments were carried out to evaluate the effects of length and module configuration (one-end suction or two-end suction)on hollow fiber filtration performance. The results showed that the curve profile of specific flux (SF) vs. operation time of one-end suction membrane module is plainness than the two-end suction module with and without bubbling enhancement. In same conditions, the steady flux of the one-end suction module was higher than two-end suction module in a long-term performance. In bubbling enhanced filtration, rising bubbles can induce fiber swaying and two phase flow turbulences, which influence on flux was higher than the module configuration. In this study, 100-120 cm was the optimal fiber length range which can keep a flux without air injection. Moreover, when the module suction in both ends was used, 120-140 cm was the optimal fiber length range.