To provide a method of manufacturing an acidic electrolytic water and an alkaline electrolytic water capable of preventing the deposition of scale onto a cathode.
In the method of manufacturing the electrolytic water, by using a water electrolysis apparatus provided with an electrolytic cell partitioned to an anode chamber (D) and a cathode chamber (E) by a diaphragm (1), having an anode plate (3) arranged in the anode chamber and a cathode plate (4) arranged in the cathode chamber, raw water is fed to the anode chamber and cathode chamber of the water electrolysis apparatus, a current is loaded to the water under the conditions under which an electrolyte exists to electrolyze the raw water, the acidic water is formed in the anode chamber and the alkaline water is formed in the cathode chamber; the volume of the water fed to the cathode chamber is restricted to ≤40 mL per ampere of the load current and only the water (10) to be fed to the cathode chamber in the water to be fed to the water electrolysis apparatus is previously subjected to softening treatment. An equally good alternative is to form three chambers by partitioning the electrolytic cell by means of two diaphragms, to house an aqueous electrolyte solution into the central chamber and to supply the electrolyte by electrophoresis into the anode chamber and cathode chamber on both sides thereof.
Eishiro Higuchi
Harumi Miyamoto