| Abstract | Membrane technology is a process that has not been widely used in potable water treatment, except for reverse osmosis applications. Because of increasingly stringent regulations, this technology is being examined for the potential application of microfiltration and ultrafiltration for the water treatment processes. This research investigate the effect of water quality parameters and operational parameters upon the iVIF and UF membrane permeation flux and removal efficiency. In this research, wide experiment investigations were conducted to evaluate the tubular dead-end MF membrane and hollow fiber cross-flow UF membrane performance. Among various type of membrane, UF6,000 is the best membrane application use. In order to accelerate the use of membrane filtration, the process that control fouling and rejection in MF and UF in necessary to be understood. In this research, effects of turbidity, ultraviolet adsorptive compounds and particle size upon flux and removal efficiency of both MF and UF( MWCO level 50,000, 13 ,000, 6,000) were investigated. It is found that the effect of small molecular weight organics (E260 sensitive) upon flux decline is much more significant than turbidity. Change the concentration of suspended solids, dissolved solids and particle size distribution has no effect on flux decline. Pretreatment by use of coagulation and powdered activated carbon adsorption were investigated and found coagulation with optimum dosage is a efficient tool to improve the flux decline. Based the results obtained above, pore diameter reduction model was presented to predict-the volume of filtrate at any time and was found to be well fit with the experimental results. Finally, a new batch membrane test was found to be a good surrogate of the real membrane filtration process. This batch membrane test method is a simple, rapid, economical and practical method to evaluate the actual membrane filtration performance. |