METHOD FOR SELECTING FILTRATION MEMBRANE, METHOD FOR WASHING FILTRATION MEMBRANE, AND MEANS FOR PREPROCESSING

摘要

PROBLEM TO BE SOLVED: To select an appropriate filtration membrane, a method for washing the filtration membrane, and an appropriate means for pre-processing water to be treated, effectively perform washing, and maintaining highly permeated water flux when raw water such as river water, lake water, groundwater, reservoir water, water subjected to secondary sewage processing, factory wastage, and sewage water is filtered with a filtration membrane or valuable substances are separated or concentrated from the raw water.;SOLUTION: The selection method comprises measuring adsorption energy generated between various organic and inorganic components contained in water to be treated and membranes, selecting a filtration membrane, with which the sum of the adsorption energy is minimum, as a filtration membrane for a membrane filtration plant, selecting an effective washing method for the removal of a component leading to the maximum adsorption energy level, as a method for washing a filtration membrane to be applied to the water to be treated, and selecting an effective means for pre-processing for the removal of a component leading to the maximum adsorption energy level, as a means for preprocessing upon processing in a filtration membrane plant.;COPYRIGHT: (C)2009,JPO&INPIT