JP2003170178A - Hydrogen dissolved water - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide hydrogen dissolved water which can be efficiently produced in a large amount at a low cost. <P>SOLUTION: When the water containing dissolved hydrogen produced while stirring and/or circulating water in a chamber is controlled to have at least ≥35 μg per 1 l of dissolved hydrogen, the oxidation reduction potential (ORP) can be decreased to ≤200 mV. When the dissolved hydrogen exceeds 20 ppb, the ORP drastically decreases and reaches about 180 mV at 35 ppb. If the amount of dissolved hydrogen is increased, the ORP gradually decreases and reaches ≤100 mV however the gradient of the decrease in the ORP is small. The method for the production therefore is effective by aiming the amount of dissolved hydrogen to about 35 ppb. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to dissolved hydrogen-containing water having a low redox potential.

[0002]

[Prior Art] Domestic water contains less calcium, magnesium, etc. than that of Western countries,
It is relatively suitable for domestic water such as cooking, drinking, and washing, and industrial water for food processing and agricultural product cultivation, but in recent years, due to deterioration of tap water such as rivers and lakes, pollution of domestic water has been Since it smells and smells of chlorine used for sterilization attaches to the nose, part of the water for daily life is being replaced with natural water, mineral water, or processed water using a water purifier.

Further, in recent years, with a focus on health, water having a low oxidation-reduction potential has been demanded as healthy water. The redox potential (ORP) indicates whether a certain substance has a strong oxidizing power to deprive the other party of an electron or a strong reducing power to give an electron, and a larger + value means a stronger oxidizing power. The smaller the value, the stronger the reducing power.

It is said that water having a low redox potential has a power of reducing and erasing active oxygen that is harmful to the human body, but the redox potential of general tap water is 550 mV to 800 mV, which is quite high and strong. It has an oxidizing power, whereas mineral water, sprinkling water and commercially available mineral water are about 400 m long.
It is as low as V to 200 mV. Therefore, tap water is increasingly shunned, and the demand for such natural water is increasing. Further, in order to process water having a low oxidation-reduction potential called so-called reduced water or activated water from tap water or the like at home or the like, a reduced water generator by electrolysis has been used in some parts.

[0005]

However, since natural water having a low redox potential and commercially available mineral water are expensive, they are used only for a part of drinking and cannot be used for general domestic water. In addition, conventional processing water has a small treatment capacity and has problems in running cost and maintenance cost, and these cannot be used for general household water. In particular, the conventional reduced water generation device has been required to separate water into cathode water (reduced water) and anode water (oxidized water) by electrolysis, but it has been found that redox potential and dissolved hydrogen generated by electrolysis are separated. The production efficiency was not very good because the relationship was not fully understood.

The present invention has been made to solve the above-mentioned problems of the conventional dissolved hydrogen-containing water having a low redox potential, and to provide a dissolved hydrogen-containing water that is inexpensive and can be efficiently produced in a large amount. It is an object.

[0007]

In order to solve the above problems, the dissolved hydrogen-containing water of the present invention contains at least 35 μg or more of dissolved hydrogen in 1 liter and has an oxidation-reduction potential of 300 mV or less. Item 3. The dissolved hydrogen-containing water according to item 2, wherein at least 35 μg or more of dissolved hydrogen is contained in 1 liter while stirring and / or circulating the water in the container, and has a redox potential of 200 mV or less.
The described dissolved hydrogen-containing water contains at least 20 μg or more of dissolved hydrogen in 1 liter in a pipe through which water passes,
It has a redox potential of 0 mV or less.

As a method of dissolving hydrogen in water, there are a method of installing an electrode in a water tank or a pipe for electrolysis, or a method of directly blowing hydrogen gas. In the case of electrolysis, a device having an anode and a cathode for giving electric energy to water and a control unit for controlling an electric current is used, and at least 35 μg of hydrogen gas as a reducing agent generated from the cathode side is added to existing water. By dissolving the above, the oxidation-reduction potential (ORP) is lowered to 300 mV or less and reformed into water having a reducing atmosphere.

It should be noted that when the amount of dissolved hydrogen increases in the initial stage, the ORP decreases sharply, but when at least 35 μg or more is dissolved, the decrease of ORP thereafter becomes gentle.
Therefore, an effective production method is to set the target value of the amount of dissolved hydrogen to about 35 μg / l.

The slope change point of the graph showing the correlation between the dissolved hydrogen amount and the ORP differs depending on the water condition. That is, when general tap water is put in a container and hydrogen is dissolved while stirring and / or circulating this water, the oxidation-reduction potential sharply decreases up to about 35 μg / l, reaches 200 mV or less, and then gradually decreases. In contrast to the gradient, when the tap water is treated while being passed through the pipe, the oxidation-reduction potential sharply decreases to about 20 μg / l and reaches 300 mV or less, and then the gradient becomes gentle.

[0011]

EXAMPLE As shown in FIG. 1, about 20 liters of tap water 2 was placed in a water tank 1, and while stirring with a stirring blade 3, water was applied to a dissolved hydrogen measuring electrode 5 by about 2.0 liters / mi
While circulating at a flow rate of n for about 30 minutes, a constant current with an output current of about 600 mA in the water tank 1 (voltage automatic variable type)
The water quality was continuously measured by the composite water quality checker 6 and the dissolved hydrogen meter 7 while performing the charging process for supplying the water.

The charging treatment was carried out through a pair of insoluble electrodes 8, 8 which were energized to water. This electrode 8 is connected to a current controller 9 and a general AC power source 10 and converts the AC current into a predetermined DC current. As the insoluble electrode 8, for example, a mesh-shaped metal electrode 8 as shown in FIGS. 2 and 3 is used. This metal electrode 8 is made of titanium wire mesh coated with platinum, and two electrodes 8 are connected by a nylon screw 12 and a nylon cap nut 13 via a resin spacer 11 to connect each electrode 8 to an output wire 14. .

The water quality was measured mainly with respect to changes in dissolved hydrogen amount, dissolved oxygen amount and redox potential (ORP) with time. The results are shown in Table 1 and FIG. The amount of dissolved hydrogen is 20
OR in the range of increasing up to about ppb (20 μg / l)
Although the decrease of P is slow (750 mV → 680 mV),
When it exceeds 20 ppb, it drops sharply to 35 ppb (35
It reaches about 180 mV at μg / l). When the amount of dissolved hydrogen is further increased, the ORP also gradually decreases to reach 100 mV or less, but the gradient becomes extremely gentle. During this period, the dissolved oxygen amount tends to increase slightly, but it does not increase greatly because it is close to the saturated state at almost the initial stage.

[Table 1]

Next, an experiment was carried out in the case where an electrode was installed in the water distribution pipe to carry out the charging treatment while passing water. In this experiment, as shown in FIG. 5, tap water was sent from an unillustrated tap to the electrode housing case 16 using the hose 15, and after being charged, it was sent to the dissolved hydrogen measuring electrode 5 and connected to it. The total amount of dissolved hydrogen was measured by 7. Electrode housing case 1
The flow rate passing through 6 is changed to about 2.0 to 16 liters / min. The electrode housing case 16 is provided with a pair of insoluble electrodes 8 and 8 exposed to the water distribution on the inner surface, and a constant output current of about 600 mA. While performing the charging process to supply the current,
A composite water quality checker 6 was installed in the middle of the pipe to continuously measure the water quality.

The water quality measurement results are shown in Table 2 and FIG. In this case, the amount of dissolved hydrogen is 17 ppb (20 μg /
OR when increasing from 1) to 20 ppb (20 μg / l)
P decreases sharply (620 mV → 270 mV), but even if the amount of dissolved hydrogen is increased thereafter, the degree of decrease in ORP becomes slow.

[Table 2]

At least 35 μg per liter
Dissolved hydrogen-containing water containing the above-mentioned dissolved hydrogen and having a redox potential of 300 mV or less exhibits the following effects. That is, it erases active oxygen that is harmful to the body, reduces the chlorine odor of tap water, and makes it difficult to generate trihalomethane, which is a carcinogen. In addition to making rice and coffee tasty, it also helps to remove stains from dishes and laundry, making it suitable for running around water (sink, washbasin, bathtub,
Water facilities such as toilets are less likely to get dirty, and breeding fish
It has the effect of improving the growth of plants. Such active water is not only applicable to collective housing and detached houses, but also widely applicable to the fields of water supply and drainage facilities, food processing, agricultural product cultivation, pharmaceuticals, and the like.

[0017]

As described above, the dissolved hydrogen-containing water of the present invention can reduce the redox potential to 300 mV or less by containing at least 35 μg or more of dissolved hydrogen in 1 liter. Also, stir and / or stir the water in the container
Or, in the case of dissolved hydrogen-containing water produced while circulating, 1
By including at least 35 μg or more of dissolved hydrogen in the liter, the oxidation-reduction potential can be reduced to 200 mV or less, and in the case of dissolved hydrogen-containing water generated in the water passage pipe, at least 20 μg or more in 1 liter. By including the dissolved hydrogen of the above, the redox potential can be lowered to 300 mV or less.

Even if the amount of dissolved hydrogen is increased beyond the above-mentioned change points, the degree of decrease in the redox potential becomes moderate, so the target value of the dissolved hydrogen amount should be based on the change points. Is an effective generation method. By using this target value, it is possible to inexpensively produce a large amount of water containing dissolved hydrogen efficiently.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a water quality measurement experiment when a charging process is performed in a water tank.

FIG. 2 is a plan view of an insoluble electrode.

FIG. 3 is a side view of an insoluble electrode.

FIG. 4 is a graph of water quality measurement results when charging is performed in a water tank.

FIG. 5 is an explanatory diagram of a water quality measurement experiment when charging is performed in a pipe.

FIG. 6 is a graph of water quality measurement results when charging is performed in a pipe.

[Explanation of symbols]

1 aquarium 2 water 5 Dissolved hydrogen measurement electrode 6 Complex water quality checker 7 Dissolved hydrogen meter 8 electrodes

─────────────────────────────────────────────────── ─── Continued Front Page (51) Int.Cl. ⁷ Identification Code FI Theme Coat (Reference) C02F 1/68 540 C02F 1/68 540E

Claims (3)

[Claims] 1. Dissolved hydrogen-containing water containing at least 35 μg or more of dissolved hydrogen in 1 liter and having a redox potential of 300 mV or less. 2. Dissolved hydrogen-containing water which contains at least 35 μg or more of dissolved hydrogen in 1 liter while stirring and / or circulating water in a container and has an oxidation-reduction potential of 200 mV or less. 3. Dissolved hydrogen-containing water containing at least 20 μg or more of dissolved hydrogen in 1 liter in a pipe for passing water and having an oxidation-reduction potential of 300 mV or less.