| 摘要 |
PROBLEM TO BE SOLVED: To efficiently wash and sterilize dishes by electrolyzing a chloride salt aqueous solution with a diaphragm electrolytic cell to generate strong acidic water and strong alkaline water having specified pH values, performing the washing with the strong alkaline water, and then performing the sterilization with a hypochlorous acid sterilizing water obtained by diluting the strong acidic water. SOLUTION: An aqueous solution having a relatively high concentration which contains a chloride salt such as sodium chloride, potassium chloride or the like is electrolyzed in a diaphragm electrolytic cell to generate a strongly alkaline water of pH 10.5 or more and a strongly acidic water of pH1-3.5. The strongly alkaline water is diluted with tap water and regulated to a strongly alkaline water of pH10.5-13.5, and the strongly acidic water is diluted with tap water and regulated to a hypochlorous acid sterilizing water having pH4-8 which has high sterilizing force but is nontoxic to human body. The thus regulated sternly alkaline water of pH10.5-13.5 is sprayed to dishes, preferably, in shower form to remove oil and wash the dishes, and the dishes are then sterilized with the hypochlorous acid sterilizing water of pH4-8, whereby washing and sterilization of the dishes can be efficiently performed. |
