JP2000061462A - Method of controlling ph and hardness of water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce water having a desirable effect and performance on the hair, skin, or the like by suitably mixing water which have passed through cation exchange resin the end of whose functional group is sodium, cation exchange resin of hydrogen, and anion exchange resin of hydroxyl group respectively to control pH and hardness of the mixed water. SOLUTION: City water fed as raw water is distributed to respective pipelines by a branch valve. The distribution to the pipelines is done by suitably operating the branch valve by a user. That is, city water to be fed as raw water is divided into parts passing through cation exchange resin the end of whose functional group is sodium type, cation exchange resin of hydrogen type, anion exchange resin of hydroxyl type, and a city water/raw water bypass for causing city water to flow as it is without treating any longer respectively through pipelines by the command from a control panel. As a result, soft water of neutral pH, soft water of weak acidic pH, water of alkaline pH, and city water/raw water can be used according to the appropriate use object to the user.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a very favorable effect and effect on hair, skin, and the like, and is for producing a large amount of water for making it difficult for dirt to adhere to the equipment around water and its surroundings. Regarding the method.

[0002]

2. Description of the Related Art Water includes acidic water and alkaline water, hard water containing a large amount of calcium ions and magnesium ions and soft water containing a small amount of these ions, and weak acidic water is close to the pH of skin and hair. Therefore, it is said that it is less irritating and is good for beauty, and alkaline water is good for health, so it is good to use it for cooking, etc.
Hard water is used as mineral water for drinking, and soft water is suitable for washing because the soap has a good foaming property. Thus, the properties of water required depend on the purpose of use.

Conventionally, there has been no method for producing water effective for both beauty and antifouling, but in order to suppress corrosion of metal of cooling equipment using high-purity water as a heat medium, the pH of water is adjusted. As a control method, there is, for example, Japanese Patent Publication No. 8-9030.

[0004]

However, the conventional method has the following problems. That is, Japanese Patent Publication 8-90
In the case of 30, the circulating water always passes through the mixing tank of the cation exchange resin and the anion exchange resin. Therefore, even if the anion removal is unnecessary, the anion removal is performed and may be useless depending on the application. . Further, when a mixing tank is used, there is a drawback that a large amount of a regenerant is required because the utilization efficiency of the resin is slightly lowered.

The present invention solves the above-mentioned problems of the prior art, has very favorable effects and effects on hair and skin, and makes it difficult for dirt to adhere to the equipment around water and its surroundings. The purpose is to provide a method for producing a large amount of water.

[0006]

MEANS FOR SOLVING PROBLEMS AND ACTIONS AND EFFECTS OF THE PROBLEMS The present invention made to solve the above problems is a cation exchange resin having a sodium group at a functional group terminal and a hydrogen type cation exchange resin having a functional group terminal. It was decided to control the pH and hardness of water by appropriately mixing the resin and water that has passed through an anion exchange resin having a hydroxyl group at the functional group terminal.

By appropriately mixing water through a cation exchange resin having a sodium group at the functional group end, a cation exchange resin having a hydrogen group at the functional group end, and water passed through an anion exchange resin having a hydroxyl group at the functional group end, Since the user can freely control the pH and hardness of water, weak acidic water that has very favorable cosmetic effects and effects on hair and skin, and has an antifouling effect on equipment around water is also available. Alkaline water, which is said to be effective in decomposing and cleaning organic substances, and soap that foams well, makes it difficult for metal soap stains to adhere, and is also effective for beauty around equipment, skin, and hair. Can be freely created and controlled.

[0008] Further, by using a separate resin tank for each of the cation-exchange resin and the anion-exchange resin, it is possible to produce the desired water suitable for the user's purpose. There is no need to do so, and the resin utilization efficiency is improved.

The effect of the above soft water is, for example, when soap and shampoo are used, calcium and magnesium in tap water are combined with soap components to form metal soap,
The soft water can prevent the metal soap from remaining on the skin and hair, and thus causes the bulky feeling and the feeling of dryness of the skin and hair to be eliminated.

The method for controlling the pH and hardness of water according to the present invention is
It can also be applied to all types of equipment around water. For example, hot water supply / water supply equipment, faucet fittings, shower equipment, bathtub equipment,
It can be applied to simple saunas, toilets, vanities, hot water toilet seats, kitchens, dishwashers, etc.

The cation exchange resin in the present invention may be either a strong acid type or a weak acid type. The cation exchange resin also contains a chelate resin. Similarly, the anion exchange resin may be either a strong base type or a weak base type.

[0012] In a preferred aspect of the present invention, the method for controlling the pH and hardness of the water also comprises means for mixing water that does not pass through the ion exchange resin.

In the method of controlling the pH and hardness of water, by providing a means for mixing water that does not pass through the ion exchange resin, the choice of water types for the user can be further expanded. That is, in the case of use in a general household, for example, a user may desire tap water that is normally discharged from a tap, and therefore it is desirable to include a mechanism that discharges raw tap water.

Further, by including the method of mixing not only the water that has passed through the ion exchange resin with each other as described above, but also mixing with the tap water raw water, the types of water that can be used are increased.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below in order to further clarify the constitution and operation of the present invention described above.

(Embodiment) FIG. 1 shows an apparatus for achieving the present invention. First, tap water supplied as raw water (shown as tap water raw water in FIG. 1) is branched into each pipe by a branch valve. The branch to each pipe is performed by the user appropriately operating the control panel. That is,
Each of the tap water supplied as raw water has a sodium cation exchange resin with a functional group terminal (shown as Na type cation exchange resin in FIG. 1) and a hydrogen type cation exchange resin with a functional group terminal (FIG. 1). H-type cation exchange resin), an anion exchange resin whose functional group end is a hydroxyl type (shown as OH type anion exchange resin in Fig. 1), and tap water without any treatment. It is branched through each pipe to the tap water raw water bypass for flowing as it is by the command from the control panel.

The water which has passed through the sodium-type cation exchange resin whose functional group end is the sodium ion which has been adsorbed in advance on the sodium-type cation exchange resin whose functional group end is the same as calcium and magnesium in the tap water raw water. When the cations cause an ion exchange reaction, the cations such as calcium and magnesium in the tap water raw water are adsorbed on the sodium-type cation exchange resin whose functional group ends are originally sodium-type cation exchange resins. The sodium ions adsorbed on are released. As a result, soft water having a neutral pH is obtained.

Similarly, water having passed through a cation exchange resin whose functional group end is a hydrogen type has hydrogen ions adsorbed in advance on a cation exchange resin whose functional group end is a hydrogen type, calcium in tap water raw water, Cations such as magnesium and magnesium in tap water are adsorbed by a cation exchange resin whose functional group end is a hydrogen type by causing a cation such as magnesium to undergo an ion exchange reaction. The hydrogen ions adsorbed on the ion exchange resin are released. As a result, soft water having a weakly acidic pH is obtained.

Similarly, the water having passed through the hydroxyl group-type anion exchange resin having a functional group end is mixed with the hydroxide ion previously adsorbed on the hydroxyl group-type anion exchange resin having a functional group terminal and the tap water raw water. Anions such as carbonate ions, nitrate ions, and sulfate ions in water of the tap water cause anion exchange reaction, so that anions such as carbonate ions, nitrate ions, and sulfate ions in tap water have a hydroxyl group at the functional group end. Hydroxyl ions, which were originally adsorbed on the resin and were originally adsorbed on the hydroxide type anion exchange resin whose functional group ends are released, are released. as a result,
Water with an alkaline pH is obtained.

The only water branched by the branch valve is
The water that has passed the tap water raw water bypass is directly passed to the latter stage of the tap water raw water without causing the ion exchange reaction as in the above example.

The water obtained through the respective resins and bypasses as described above is collected in a mixing valve in the subsequent stage and used as treated water.

That is, the above-obtained soft water having neutral pH, soft water having weakly acidic pH, and water having alkaline pH,
Then, the tap water raw water (hard water having a neutral pH and high concentration of calcium and magnesium) is appropriately mixed by the mixing valve according to the instruction input from the control panel for the user's proper purpose of use. , Treated water and used.

When the user does not process tap water and wants to use the raw water as it is, the instruction from the control panel also allows the tap water to be directly connected to the tap water raw water bypass without passing to the ion exchange resin. Good.

FIG. 2 shows the pH and the concentration of the hardness component of the water produced by the above mechanism.

That is, by the mechanism shown in FIG. 1 according to the present invention, it is possible to freely generate water having a pH and a hardness component concentration within the range of the figure ABCD.

For example, by using the Na-type cation exchange resin and the H-type cation exchange resin shown in FIG. 1 and tap water raw water bypasses, water is passed through in an appropriate amount, respectively, and then mixed. It is possible to freely generate water having the pH and the concentration of the hardness component in the range inside the figure ABC in FIG.

This is p at the vertex A of the figure ABC.
The water of H and hardness is Na type cation exchange resin, the pH of the vertex B is the H type cation exchange resin, and the water of hardness is the pH and hardness of the vertex C is tap water raw water bypass. , Because the water that flows through each is generated.

Similarly, by using Na-type cation exchange resin and OH-type anion exchange resin shown in FIG. 1 and tap water raw water bypass, respectively, an appropriate amount of water is passed through, and after mixing, It is possible to freely generate water having the pH and the concentration of the hardness component within the range of the figure ADC in 2.

This is p at the vertex A of the figure ADC.
The water of H and hardness is Na type cation exchange resin, the pH of vertex D is the OH type anion exchange resin of the hardness water, and the pH and hardness of vertex C is the tap water raw water bypass. , Because the water that flows through each is generated.

With the above-described mechanism, the user can freely generate and use a large amount of water according to his / her purpose of use, for example, face washing, hair washing, stain removal of organic substances and the like.

[0031]

As described above, according to the present invention, by using the method of controlling the pH and hardness of water, it has very favorable effects and effects on hair, skin, etc. It is possible to provide a method for producing a large amount of water for making it difficult for dirt to adhere to the surrounding area.

[Brief description of drawings]

FIG. 1 is a diagram showing an apparatus for embodying a method for controlling pH and hardness of water according to the present invention.

FIG. 2 is a diagram showing pH and concentration ranges of hardness components of water produced by the apparatus of FIG.

Claims (2)

[Claims] 1. A cation exchange resin having a sodium group at a functional group end, and a cation exchange resin having a hydrogen group at a functional group end,
A method of controlling the pH and hardness of water by appropriately mixing water that has passed through an anion exchange resin whose functional group end is a hydroxyl group. 2. The method for controlling pH and hardness of water according to claim 1, further comprising means for mixing water that does not pass through the ion exchange resin.