JP2003126856A - Method for using alkaline electrolytic solution as stock solution for electrolyzed water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the evolution of chlorine gas in the case where an electrolyte solution is electrolyzed by d.c. to provide alkaline electrolyzed water for cleaning and electrolyzed water for sterilization. SOLUTION: In electrolyzing an electrolyte solution by d.c. to provide alkaline electrolyzed water for cleaning and a hypochlorite solution for sterilization, the electrolyte solution is previously rendered alkaline, whereby chlorine gas evolved on the anode side is rapidly absorbed in and neutralized with the alkaline solution to prevent the chlorine gas from being scattered and released into the outside of the system and thus to prevent a deterioration in environment and rusting.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a technique for electrolyzing an alkaline electrolyte solution with a direct current to obtain alkaline electrolyzed water for the purpose of cleaning and sterilizing.

[0002]

2. Description of the Related Art Conventionally, when preparing electrolyzed water for the purpose of cleaning and sterilization, salt, hydrochloric acid and calcium chloride have been used as electrolyte raw materials, and these electrolyte solutions are electrolyzed in a diaphragm type electrolytic cell, When preparing alkaline electrolyzed water used for cleaning and acidic electrolyzed water used for sterilization, chlorine generated on the anode side is easy to gasify because the electrolyzed water of the anode is acidic, which causes environmental deterioration and rust It was easy to become.

[0003]

The problem to be solved by the present invention is to generate chlorine gas when electrolyzing an electrolytic solution with a direct current to obtain alkaline electrolyzed water for cleaning and electrolyzed water for sterilization. It is to prevent.

[0004]

In order to solve the above-mentioned problems, the present inventor previously added an alkaline substance to an electrolyte solution for electrolysis to rapidly absorb and neutralize chlorine gas generated on the anode side to obtain a gas. It was prevented from spreading to the outside.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail with reference to Examples, but this is for the purpose of deepening the understanding of the present invention, and the scope of the present invention is not limited to this. (Example 1) A saturated solution was prepared from a powder obtained by mixing 9 parts of sodium chloride and 1 part of sodium carbonate to prepare a stock electrolytic solution. As a result of electrolysis of this in a diaphragm type electrolytic cell, alkaline electrolyzed water of pH 12.5 and sodium hypochlorite solution of pH 8.7 were obtained. This electrolysis does not generate chlorine gas even if it is carried out in a solution type electrolytic cell. (Example 2) A solution of 1% potassium chloride and 0.2% potassium carbonate was electrolyzed in a diaphragm type electrolytic cell to obtain alkaline electrolyzed water having a pH of 11.7 and a potassium hypochlorite solution having a pH of 8.2. No chlorine gas was generated during electrolysis.

[0006]

EFFECT OF THE INVENTION When electrolyzing an electrolytic solution with a direct current to obtain an alkaline electrolyte for cleaning and a hypochlorite solution for sterilization, chlorine in the electrolysis is preliminarily obtained by making the electrolytic solution alkaline. It is possible to prevent the generation of gas and prevent the deterioration of the environment and the generation of rust.

Claims (5)

[Claims] 1. A method for preparing electrolyzed water by electrolyzing an electrolyte solution, wherein the electrolyte solution is made alkaline. 2. The method for preparing electrolyzed water according to claim 1, wherein the alkaline electrolyte solution according to claim 1 contains chloride ions. 3. The alkaline electrolyte according to claim 1, wherein the alkaline electrolyte is sodium carbonate, sodium bicarbonate, caustic soda, caustic potash, potassium carbonate, potassium bicarbonate, sodium acetate, potassium acetate, sodium succinate, potassium succinate, or sodium citrate. 2. Preparation of electrolyzed water according to claim 1, characterized in that it contains potassium citrate or sodium fatty acid or potassium fatty acid or sodium phthalate or potassium phthalate or sodium oxalate or potassium oxalate or sodium tartrate or potassium tartrate or ammonia. Method 4. The method for preparing electrolyzed water according to claim 1, wherein a non-diaphragm electrolytic cell is used in the method for preparing electrolyzed water according to claim 1. 5. The method for preparing electrolyzed water according to claim 1, wherein a diaphragm type electrolytic cell is used in the method for preparing electrolyzed water according to claim 1.