FRESH WATER PRODUCTION METHOD, FRESH WATER PRODUCTION APPARATUS, METHOD FOR DESALINATING SEA WATER INTO FRESH WATER, AND APPARATUS FOR DESALINATING SEA WATER INTO FRESH WATER

摘要

An object is to provide a sea water desalinating method that is capable of efficiently producing purified water, such as fresh water, from unpurified water, such as sea water. Provided is a fresh water generating method for generating fresh water by way of reverse osmosis membrane filtration, which includes mixing sea water with low salt concentration water having a salt concentration lower than sea water to produce mixed water, and subjecting the mixed water prepared by the mixing to reverse osmosis membrane filtration, thereby generating fresh water.