JPH10113664A - Sterilized water having high electron activity - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sterilized water which is harmless and safe to the human body when used in the agricultural, medical, veterinary, stockbreeding, food processing and environmental sanitation fields and capable of being produced at a low cost. SOLUTION: An aq. soln. admixed with a small amt. of such an electrolyte as sodium chloride, potassium chloride and calcium chloride is electrolyzed in an electrolytic cell having a diaphragm to generate electrolytic water as the sterilized water. The sterilized water is harmless to the human body with the sterilzing power secured by the oxidation-reduction potential and has a high electron activity. Further, the sterilized water contg. <=30ppm residual chlorine, harmless to the human body, having >=0.95V oxidation-reduction potential, with the sterilizing power secured by the oxidation-reduction potential and having a high electron activity or further the sterilized water contg. <=30ppm residual chlorine, harmless to the human body, having >=16 electron activity pe >=0.95V oxidation-reduction potential), with the sterilizing power secured by the electron activity (oxidationreduction potential) and having a high electron activity is also provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high electronic device used for spraying, running water, and cleaning for disinfection including sterilization and sterilization in fields such as agriculture, medical care, veterinary livestock, fisheries processing, environmental hygiene, and kitchen cleaning. The present invention relates to sterilized water having activity.

[0002]

2. Description of the Related Art Pesticides conventionally used as agricultural disinfectants or fungicides include organochlorine, dithiocarbamate, carboxyimide, benzoylanilide, benzimidazole, organic phosphorus, triazole, and the like. There are antibiotics, etc. For details and how to use them, please refer to Shuichiro Kono, "Nippon Pesticide Situation" (Iwanami Shoten, published in 1990), Shigetaka Kazuki, "Agrochemical Handbook" (Agricultural and Fishing Village Cultural Association, 1
959).

[0003] On the other hand, disinfectants used in the medical field include:
For hand washing, for disinfecting skin and mucous membranes, for disinfecting instruments and machines, for disinfecting the environment and others (hospital rooms, operating rooms, bedding, linens, etc.),
There are sterilization and disinfection of patients with infectious disease, sterilization of MRSA (Staphylococcus aureus), disinfection of medical waste, etc. , 1987).

[0004] Japanese Patent Publication No.
No. 8768 proposes sterilizing water obtained on the anode side by electrolyzing an aqueous solution of sodium chloride with a diaphragm, containing at least 40 ppm of residual chlorine and having a pH of 6.5 or less.

[0005]

However, it is known that such a conventional agricultural disinfectant or disinfectant used as an agricultural disinfectant or a germicide remains partially in agricultural products, and the safety of the human body eating it. As well as the risk of causing side effects on the farmers who use it. On the other hand, chemicals used for medical disinfection may cause various side effects to patients if the method of use is inappropriate, and may cause serious accidents such as death due to the lack of physical strength. In addition to the above, there is a risk that the doctors and nurses who use them may also have side effects.

[0006] Furthermore, MRSA which may cause nosocomial infection
At present, no suitable disinfectant has been developed for (Staphylococcus aureus), as is the case in the veterinary and livestock sector. In addition, disinfectants used in the food processing industry have problems in terms of handling safety and food hygiene.In addition to the inadequate sterilization effect, the problem of high cost remains. ing.

Further, the sterilized water proposed in Japanese Patent Publication No. 7-8768 is characterized as electrolytic water having a residual chlorine content of 40 ppm or more and a pH of 6.5 or less. Cannot be ignored. Therefore, when using this electrolyzed water for agricultural or medical purposes,
Residual chlorine must be at least 30 ppm or less to minimize phytotoxicity.

Therefore, the present invention has been made in view of the above problems, and is harmless to the human body when used in a wide range of fields such as agriculture, medical care, veterinary and livestock production, food processing, and environmental hygiene. Another object of the present invention is to provide sterilized water having high electron activity that can be manufactured at low cost.

[0009]

According to the present invention, in order to achieve the above object, according to the present invention, there is provided an electrolysis tank having a diaphragm containing an aqueous solution to which a small amount of an electrolyte such as sodium chloride, potassium chloride or calcium chloride is added. Electrolyzed water that is produced by electrolysis using harmless water that is harmless to the human body and has high electron activity that has a bactericidal power by the oxidation-reduction potential of the electrolyzed water, and a small amount of sodium chloride. Electrolyzed water produced by electrolyzing an aqueous solution to which an electrolyte such as potassium chloride or calcium chloride has been added using an electrolysis tank having a diaphragm, wherein residual chlorine is 30 ppm
The present invention provides sterilized water that is harmless to the human body, has an oxidation-reduction potential of 0.95 V or higher, and has high electron activity in which sterilization power is secured by the oxidation-reduction potential.

[0010] Electrolyzed water produced by electrolyzing an aqueous solution to which a small amount of an electrolyte such as sodium chloride, potassium chloride, calcium chloride or the like is added using an electrolysis tank having a diaphragm, wherein residual chlorine is 30 ppm or less. It is harmless to the human body and has a value of the electron activity pe of 16 (the value of the redox potential is 0.95 V) or more, and the high electron activity that ensures the sterilizing power by the electron activity (the redox potential). A sterilizing water having the same.

[0011]

When the sterilized water having a high electron activity obtained by the present embodiment is applied to a virus or a bacterium, due to the electrical characteristic of extreme electron deficiency (high redox potential and large electron activity pe). Then, the potential balance between the inside and outside of the cell wall is disrupted, and the bacterium stops moving in an instant. In particular, the strong electric force of sterilizing water having high electron activity causes holes or ruptures in the cell wall of the virus or bacterium, thereby dissolving the inner nucleus and enhancing the bactericidal action.

The bactericidal action of the germicidal water with high electron activity is due to the electric force, which is sufficient to destroy thin cell walls such as viruses and bacteria, but not to plants or humans. Does not destroy hard cell membranes. So, like the usual fungicides, antibiotics and chemicals,
It is not poisonous to viruses and bacteria, and does not adversely affect plants and human bodies that are host of the bacteria. The residual chlorine is 30 ppm or less, and the persistence and side effects of these fungicides are low. No safety is ensured.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Various embodiments of the sterilizing water having a high electron activity according to the present invention will be described below. First, the concept of the electronic activity pe described in the present embodiment will be described. Recently, it has been found that strongly electrolyzed water obtained by electrolyzing water obtained by adding an electrolytic substance such as salt or potassium chloride to tap water has a strong bactericidal action, and is used in various fields. The strongly electrolyzed water includes a strongly acidic water having a pH value of about 2.5, which represents acidity and alkalinity, and a strongly alkaline water having a pH value of about 11.5, both of which are harmless to the human body. It is used for disinfection in hospitals and for disinfecting pathogens transmitted to vegetables and fruit trees instead of pesticides in order to avoid the adverse effects of pesticides in the agricultural field.

As an example of producing the above strongly electrolyzed water, when about 0.075% concentration of salt solution is electrolyzed, strongly acidic electrolyzed water having a pH of about 2.5 is obtained on the anode side.
Strong alkaline electrolyzed water having a pH of about 11.5 is obtained on the cathode side. The basic chemical reaction formula is as follows. _{H 2 O = H + + OH-} (1) 2H + + 2e- = H 2 (2) O 2 + 2H 2 O + 4e- = 4OH- (3) NaCl = Na + + Cl- (4) HCl = H + + Cl- (5 ) [1/2] _{Cl 2 + e- = Cl- (6} ) HOCl + H + + e- = [1/2] _{Cl 2 + H 2 O (7} ) HOCl = H + + OCl- (8) i.e., electrolysis of brine Then, hydrogen ions in the aqueous solution [H +], the hydroxide ions [OH @ -], hydrogen [H _2], oxygen in addition to the [O _2], sodium ion [Na +], chloride [Cl @ -], Chlorine [Cl ₂ ], hypochlorous acid [HOC
l], hypochlorite ion [OCl-], hydrochloric acid [HCl]
Is generated. The proportion of such components in the electrolyzed water is determined by the pH representing the hydrogen ion [H +] concentration and the pe representing the activity of the electron [e-]. Can be expressed.

The above pH and pe are given by the following equations. pH = -log [H +] pe = -log [e-] The above-mentioned electron activity pe (PEE) is the logarithm of the base 10 of the electron concentration [e-] active in the electrolytic aqueous solution. It has a minus sign. For example, p
e = 16 is the electron density is equivalent to 10 ¹⁶ moles / liter. This is basically based on the same definition as in the case where pH (Ph or PH) representing acidity is defined from the hydrogen ion concentration [H +]. Electrolyzed water having a large pe value is water in which electrons are extremely short and residual chlorine is reduced. Further, since the electron activity pe indicates the degree of electron activity, it can also be specified by the oxidation-reduction potential, and when the oxidation-reduction potential increases, the water becomes similarly deficient in electrons. The electron activity pe and the redox potential E _H are purely theoretically related by the electron activity pe = 16.9 × redox potential E _H or the redox potential E _H = 0.05917 × electron activity pe I have.

The reason why electrolyzed water having such a high value of the electron activity pe (high value of the redox potential) has a strong bactericidal activity is as follows. Pathogenic microorganisms to be sterilized include: Hepatitis B virus (HBV), AIDS virus (HIV), Staphylococcus aureus (MRS)
A), Escherichia coli, Salmonella, Mycobacterium tuberculosis and the like. These viruses and bacteria are single-cell microorganisms surrounded by cell walls and have a size of about 1 to 1/100 microns. The viral mesh-like cell wall is dressed like armor, which is only found in bacteria and not in human cells. The virus itself cannot synthesize proteins. It consists of a living part to survive for a certain period of time, information for increasing the number of offspring, and nucleic acids having genetic factors, and has the property of proliferating in other living cells. The cell walls of these viruses or bacteria are much thinner than plant and human cell membranes.

The cell walls of these viruses or bacteria include:
There is a so-called proton pump that pumps hydrogen ions out of the cell. For this reason, a difference in hydrogen ion concentration or distribution is formed inside and outside the cell wall, and a potential difference is generated, and the electric force due to this is converted into the active energy of virus or bacteria. This is called the proton driving force and is a basic form of energy acquisition common to all living things. About these things, Shinichi Aizawa, "When an atom turns into life" (Kobunsha, 1993)
Issuance).

[0018] The above-mentioned bacterium moves like a Brownian motion by moving the venous hairs out of the cell wall. The source of the energy to move the venous hair is the proton driving force. In addition, the potential difference between the inside and outside of the cell wall serves to keep life by taking in or pumping out ions such as sodium, potassium, and calcium into and out of the cell wall.

As described above, the root of the activity of the virus or the bacterium is the electric force of hydrogen ions applied to the inside and outside of the cell wall.
Moving around using this electrical power is evidence that the bacteria are alive. Except in special cases, cessation of movement means the killing of bacteria. When strongly electrolyzed water having a large electron activity value pe (a large redox potential value) is applied to such a virus or a bacterium, the extremely shortage of electrons (p
At the same time, the electrical characteristics of excess hydrogen ions (small pH) at the same time cause the potential balance between the inside and outside of the cell wall to be completely disrupted, and the bacteria immediately stop moving. High p
eThe pores or rupture of the cell walls of viruses and bacteria due to the strong electric force of sterilizing water, and the nucleus (DNA) inside
Melts out.

Conventional bactericides are roughly classified into antibiotics and chemical agents. Antibiotics are found in microorganisms such as bacterial mold that exist in the soil, etc.In order for these microorganisms to survive, take out what should be a weapon possessed by other microorganisms so that they do not increase and turn them into drugs. It was done.
Chemical agents are inorganic chemicals that are toxic to viruses and bacteria, but these fungicides do not have the selectivity of killing only bacteria, and in addition to the desired bactericidal effect,
A similar effect is exerted on plants and human bodies that are host cells of the fungus. This causes persistence and side effects.

On the other hand, the bactericidal action of high-pe germicidal water (sterilized water with a high redox potential) is entirely due to electric force, and this electric effect destroys thin cell walls such as viruses and bacteria. It is enough to destroy hard cell membranes such as plants and human bodies. This is high p
eThis is a cause of no residual property or side effects in sterilized water (sterilized water having a high redox potential).

The bactericidal action of the strongly acidic electrolyzed water may be caused by four factors: strong acidity, high redox potential, chlorine, and active oxygen. Of these, the chlorine component, except for the chlorine gas that evaporates immediately above the electrolyzed water immediately after generation, contains less than one order of magnitude less dissolved chlorine in the disinfecting effect of hypochlorous acid than the concentration of other chlorine-based disinfectants. Active oxygen is also generated in the process of electrolysis, and has a short life and little effect. Therefore, the bactericidal action of the strongly acidic electrolyzed water is almost caused by the strongly acidic and high oxidation-reduction potential. Strong acid refers to water having a high hydrogen ion concentration (pH), and high oxidation-reduction potential refers to extremely electron-deficient water (high pe water) as described above.

Hereinafter, a specific embodiment of the sterilizing water having a high electron activity according to the present embodiment will be described. First, an aqueous solution prepared by adding a small amount of sodium chloride as an electrolyte to tap water is subjected to electrolysis at a constant voltage for a fixed time, and the electron activity pe on the anode side is 16 or more (the oxidation-reduction potential is 0.95 or less).
V or more), and preferably sterile water having a high electron activity with a pe of 19 or more (redox potential of 1.16 V or more) and a residual chlorine of 30 ppm or less.

The generation of electrolyzed water includes a constant voltage electrolysis and a constant current electrolysis, and is carried out based on the following steps based on the constant voltage electrolysis. That is, when one electrode for each of the positive and negative electrodes is immersed in water while facing each other via a diaphragm, and a current is applied to the electrodes by applying a constant voltage, the cations of the dissolved trace amount of electrolyte move to the cathode side. At the same time, the anions move to the anode side, and at the same time, the pH of the water on the cathode side rises due to electrolysis of water to become strongly alkaline water, and the pH of the water on the anode side falls to become strongly acidic water. At this time, the oxidation-reduction reaction occurring at each electrode raises the oxidation-reduction potential of the water on the anode side and decreases the oxidation-reduction potential of the water on the cathode side.

In this case, the flow of the electrolytic current differs depending on the amount of the electrolyte contained in the aqueous solution, and the amount of electrolysis at this time is proportional to [current × time] based on Faraday's law. Depends on the amount of charge at the time of electrolysis. Therefore, when performing electrolysis with a diaphragm, adjust the amount of electrolyte in the aqueous solution, adjust the electrolytic current by adjusting the electrolytic voltage, or adjust the pH of the water at both electrodes by adjusting the electrolytic time. And the oxidation-reduction potential can be adjusted.

FIG. 1 is a block diagram for producing sterilized water having a high electron activity according to the present invention.
This is an example of a continuous electrolysis apparatus in which the function of adjusting the amount of electrolyte added while the electrolysis voltage is kept constant and the electrolysis time can be adjusted by adjusting the amount of water. The main apparatus configuration will be described. Reference numeral 10 denotes an electrolytic cell. The electrolytic cell 10 is separated by a diaphragm 13 into an anode cell 14 and a cathode cell 15, and each cell has one anode 16 and one cathode 16. 17 are immersed and arranged facing each other. 5 is a chloride tank, 6 is a chloride pump, 7 is a mixer, 18 is a DC power supply, 19 is a control circuit,
Reference numeral 20 denotes an operation panel.

The purified water fed from the water supply port 1 is depressurized and adjusted by the water pressure regulator 3 while the supply and the stop are controlled by the solenoid valve 2 to have a constant water pressure.
The amount of water per minute is detected by the water amount sensor 4 and flows into the mixer 7 while being confirmed by a display provided on the operation panel 20. Normally used water is distilled water, purified water or tap water. In the case of tap water, it is supplied through a water purification device.

A chloride solution having a predetermined concentration is prepared in advance in the chloride tank 5, and the chloride solution is automatically and continuously supplied to the mixer 7 by the operation of the chloride pump 6 in an amount corresponding to the amount of water. Is added. The chloride solution and water are uniformly mixed by the mixer 7 to form an aqueous solution.
To the electrolytic cell 10. The automatic drain valve 8 functions to automatically drain to the drain 9 side when the water pressure is below a certain level. Therefore, when the electromagnetic valve 2 is opened and the aqueous solution is supplied at a normal water amount and pressure, the aqueous solution is supplied to the electrolytic cell 1.
It is supplied to the 0 side.

The anode 16 and the cathode 17 which are opposed to each other in the electrolytic cell 10 are connected to a DC power supply 18, and the aqueous solution is electrolyzed in the electrolytic cell 10 by a DC current.
Sterilized water 21 having high electron activity is taken in from the 4 side, and strong alkaline electrolyzed water 22 is taken from the cathode tank 15 side.
Is withdrawn. The above operation is automatically controlled based on a program input to the control circuit 19.

FIG. 2 is a pe-pH diagram of the pe-sterilized water, in which the left axis indicates pe, the horizontal axis indicates pH, and the right axis indicates oxidation-reduction potential. The position of the boundary of the molar concentration of each chemical component generated in an aqueous sodium chloride solution (0.1% saline) prepared by charging 1.0 liter of sodium chloride into 1 liter of tap water is shown by a solid line. To examine how these concentrations change with the amount of sodium chloride added to tap water, the amount of sodium chloride added to 1 liter of tap water is 0.5 grams (0.0 grams).
5% saline) and 0.1 gram (0.01% saline).

As a result, when the amount of sodium chloride is 0.5 g, there is almost no change from the case of 1.0 g of sodium chloride. Particularly, when the amount of sodium chloride is 0.1 g, chlorine molecules (Cl _A change appears in the range of ₂ ), which is indicated by the dotted line. When the length of the electrolysis time was changed, the concentration of the saline solution was 1.0 per liter of tap water.
In the case of gram (○ mark), in the case of 0.5 gram (□
Mark), and the difference in the case of 0.1 gram (△ mark) was examined. In FIG. 2, those measurement data are indicated by a circle, a square, and a triangle, respectively. The electrolysis time was indicated by a number in parentheses next to a circle, a square, and a triangle using a unit of minute. (0) is data immediately before electrolysis. When (4) is electrolyzed for 4 minutes, (15) is 15
It is data when electrolysis is performed for one minute.

The pe value of ordinary tap water is about 5 to 10, the amount of the contained electrolyte is small, and the pe value on the anode side is sufficient even if electrolysis is carried out at a constant voltage with a diaphragm at a constant voltage. It is difficult to raise. Therefore, as in the present embodiment, a predetermined amount of an electrolyte such as sodium chloride, potassium chloride, calcium chloride or the like is added and then electrolysis is performed to obtain strongly electrolyzed water having a target pe value (a value of oxidation-reduction potential). In addition, the effect of reducing the amount of dissolved chlorine generated from the substance contained in the additive and improving safety can be obtained.

Table 1 shows the concentrations of the aqueous solutions and the values of the pH, pe and residual chlorine of the sterilized water having high electron activity of the three aqueous solutions of Examples 1 to 3, and Table 2 shows the sterilized water. The test results are shown.

[0034]

[Table 1]

[0035]

[Table 2]

The test method, the bacteria used and the culture method are as follows. First, the test method is to prepare a certain number of bacterial solutions by preparing test bacteria, diluting them with 1 ml of physiological saline, and adding 1 ml of the solution.
Is added to 9 ml of sterilized water having a high electron activity, and the number of bacteria after a certain period of time is examined. When the bacterium is MRSA, it is cultured on a standard agar medium at a culturing temperature of 37 ° C. for 24 hours. When the bacterium is Pseudomonas aeruginosa, it is cultured on a standard agar medium at a culturing temperature of 37 ° C. for 24 hours.

From the results of Examples 1 to 3 above, the bactericidal effect of the germicidal water having a high electron activity depends on the concentration of residual chlorine and pH.
Does not depend much on the value of pe (the value of oxidation-reduction potential)
It can be seen that it largely depends on. Further, Examples 1 to
According to the result of 3, if the pe is 16 or more, preferably 19 or more, that is, if the value of the oxidation-reduction potential is 0.95 V or more, preferably 1.16 V or more, the concentration of the residual chlorine is 0.7 ppm. This shows that there is an instant bactericidal effect.

Table 3 shows the bactericidal activity of sterilizing water having a high electron activity in tap water, hydrochloric acid (pH 2.6), sodium hypochlorite (10 ppm), and benzalkonium chloride (100 pp).
m) and the results of a comparative test. In Table 3, the time until about 20,000 to 8 million bacteria of initial bacteria are killed is measured. 30 seconds indicates sterilization within 30 seconds, and non-sterilization indicates no sterilization.

[0039]

[Table 3]

According to Table 3, the acidic hydrochloric acid solution has a pH of about 2.6.
And pe is 15 and sodium hypochlorite (10 ppm) is about p
In H6.7, pe was about 17, and benzalkonium chloride (10
0 ppm) is about pH 6.5 and pe is about 10.

Further, in the sterilized water having a high electron activity of pe22 / pH 2.6, all of the bacteria were sterilized within 30 seconds except for 2 minutes of B. cereus.
Only the Vibrio parahaemolyticus was sterilized within 30 seconds with an aqueous solution of 2.6 hydrochloric acid, and other bacteria were sterilized by 2 hours before sterilization.
Results show that it takes 4 hours or is not sterilized. The test results show that the bactericidal action of the germicidal water having high electron activity is not merely a low pH. In addition, sodium hypochlorite (10p
pm) and benzalkonium chloride (100 ppm), sterile water having a high pe and high electron activity shows a better sterilizing effect.

[0042]

As described above in detail, according to the germicidal water having a high electron activity according to the present invention and the method for producing the same, the germicidal water (redox potential) having a large value of the obtained electron activity pe is obtained. Sterilization water) has an extreme electron deficiency and an excess of hydrogen ions, resulting in an imbalance in potential between the inside and outside of cell walls of viruses and bacteria. Is obtained. Especially when used for agriculture, it does not remain in agricultural products at all unlike pesticides used as conventional disinfectants and bactericides. And the safety to the human body is perfect.

Even when used for medical purposes, the sterilizing water having a high electron activity has a strong electric force to open a hole in the cell wall of a virus or a bacterium, or the internal nucleus is melted out by rupture, and the bactericidal action is exerted. This bactericidal effect is enhanced by electric force and does not destroy hard cell membranes such as plants and human bodies, and plants such as common fungicides such as antibiotics and chemicals are hosts of bacteria and It does not adversely affect the human body, and there is no risk of causing side effects on patients without physical strength or doctors and nurses. Especially, no suitable disinfectant has been developed so far, and there is a risk of causing hospital-acquired infection.
It is also effective to use when dealing with SA (Staphylococcus aureus).

As described above, the sterilized water having a high electron activity according to the present invention is safe and easy to handle, and can be easily produced using an electrolyzer. The effect of reducing costs is greater than that of (1). The sterilized water with high electron activity generated is used for agriculture,
It has a remarkable effect that it can be used for disinfecting action in a wide range of fields such as medical care, veterinary livestock, food processing, environmental hygiene, home hygiene, kitchen cleaning and the like.

[Brief description of the drawings]

FIG. 1 is a block diagram of an apparatus for producing sterilized water having high electron activity according to the present invention.

FIG. 2 is a pe-pH diagram of sterilized water obtained by the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Water supply port 2 ... Solenoid valve 3 ... Water pressure regulator 4 ... Water amount sensor 5 ... Chloride tank 6 ... Chloride pump 7 ... Mixer 8 ... Automatic drain valve 9 ... Drain 10 ... Electrolyzer 13 ... Diaphragm 14 ... Anode tank DESCRIPTION OF SYMBOLS 15 ... Cathode 16 ... Anode 17 ... Cathode 18 ... DC power supply 19 ... Control circuit 20 ... Operation panel 21 ... Sterile water having high electron activity 22 ... Strong alkaline electrolyzed water

Claims (3)

[Claims] 1. A small amount of sodium chloride / potassium chloride /
Electrolyzed water generated by electrolyzing an aqueous solution containing an electrolyte such as calcium chloride using an electrolyzer with a diaphragm. The electrolyzed water is harmless to the human body and has a sterilizing power by the oxidation-reduction potential of the electrolyzed water. A sterilized water having high electron activity, characterized in that: 2. A small amount of sodium chloride / potassium chloride /
Electrolyzed water generated by electrolyzing an aqueous solution containing an electrolyte such as calcium chloride using an electrolysis tank having a diaphragm. The residual chlorine is 30 ppm or less and is harmless to the human body and oxidized at 0.95 V or more. Having a reduction potential,
Disinfecting water having high electron activity, wherein disinfecting power is secured by the redox potential. 3. A small amount of sodium chloride / potassium chloride /
Electrolyzed water produced by electrolysis of an aqueous solution containing an electrolyte such as calcium chloride using an electrolysis tank having a diaphragm. The residual chlorine is 30 ppm or less and is harmless to the human body. A sterilizing water having a high electron activity, wherein the water has a value of 16 (redox potential value is 0.95 V) or more and a sterilizing power is secured by the electron activity (redox potential).