METHOD FOR PRODUCING MINERAL WATER RICH IN CALCIUM IONS AND MAGNESIUM IONS

摘要

A method for producing mineral water from deep sea water includes: (a) filtering deep sea water using a first nano-filtration membrane, which is able to retain sulfate ions from permeating therethrough, so as to obtain sulfate ion-rich concentrated water and first permeate water; and (b) filtering the first NF-permeate water using a second NF membrane, which is able to retain calcium ions and magnesium ions from permeating therethrough, so as to obtain mineral water rich in calcium ions and magnesium ions.