Abstract: A regeneration system is provided for regenerating at least one regeneration container which has an accommodation space for confining therein an inactive ion-exchange resin. The regeneration system includes a flow-path control device, a first tank, a second tank, a first filtration element, a third tank, and a second filtration element. The flow-path control device is actuated to be operable in a first circulation state and a second circulation state. The first tank is switchable to be in fluid communication with the accommodation space. The second tank is switchable to be in fluid communication with a first circulation path. The first filtration element is disposed to filter a first liquid in the first circulation path. The third tank is switchable to be in fluid communication with the accommodation space. The second filtration element is disposed to filter a third liquid in a second circulation path.

Abstract: 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.