A COMPARATIVE-STUDY ON THE APPLICATION OF MEMBRANE TECHNOLOGY TO THE PUBLIC WATER-SUPPLY

A series of experiments to demonstrate the applicability of micro- and ultra-filtration technology for purification of the public water supp ly were conducted using slightly polluted river water. The result of t he first and second runs of the experiment was satisfactory from the v iewpoints of treatment efficiency and effectiveness of contaminant rej ection. There was almost no difference in the performance between MF a nd UF membranes. However, when an MF membrane was used, pretreatment b y coagulation was necessary to maintain a high flux with the untreated water.