ADVANCED WATER PURIFICATION METHOD USING HOLLOW FIBER MEMBRANE AND METHOD FOR OPERATING ADVANCED WATER PURIFICATION SYSTEM

摘要

PURPOSE: Provided is an advanced water purification method being capable of eliminating microorganisms such as giardia and cryptosporidium and preventing clogging of hollow fiber membrane. CONSTITUTION: The method comprises the steps of flocculating colloidal material which would cause clogging of a hollow fiber membrane by mixing raw water with chemicals in an in-line mixer(22); introducing the raw water including floc into a membrane separation basin(14) with a hollow fiber membrane(16); inputting powder activated carbon or biological activated carbon to the membrane separation basin(14); and separating coagulated materials formed at the flocculation step and the activated carbon which adsorbs organic chemicals, taste and odor materials, trihalomethane precursors, chromaticity, anion and surfactant.