JPH07110358B2 - Water purifier and water purifier - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purification agent and a water purifier for water containing free chlorine, particularly sterilized drinking water, and more particularly to a porous body containing calcium carbonate as a main component. Natural coral or coral fossil, clay mineral, and gypsum or zeolite are mixed and fired to form a sustained release agent (ceramic) of an alkaline component, and the alkaline component sustained release agent and free chlorine are reduced. By using a water purification agent that is a mixture of a sulfite salt to be removed and a mixture, and by using the water purification agent, it is possible to easily remove residual chlorine and to adjust the pH.
The present invention relates to a water purifier for general household drinking water having a simple structure that enables adjustment and high durability.

[0002]

2. Description of the Related Art The industrial structure has changed with the progress of material civilization and diversification of consumer needs, and a wide variety of chemical substances have been inundated throughout the people's lives due to the penetration of high-mix low-volume production.

For this reason, not only industrial wastewater in the manufacturing industry such as the chemical industry but also the domestic wastewater has a large content of chemical substances, and groundwater and rivers / lakes are becoming seriously polluted. .

[0004] Therefore, there is a high risk that the chemical substances will be mixed with drinking water, which is essential for the life of the common people and by extension the life of human beings, and the microorganisms that use the chemical substances as nutritional sources will be proliferated. The six laws and the Chemical Substances Control Law prevent drinking water from being contaminated by chemical substances and microorganisms.

[0005] As a part of the prevention of drinking water pollution, chlorine is introduced at a water purification plant so that the residual chlorine concentration in the general household end tap water distributed from the water purification plant becomes 0.1 ppm or more. As a result, the prevention of microbial contamination of tap water used in homes and the prevention of infectious diseases are achieved.

On the other hand, due to the diversification of eating habits of general households and the preference for gourmet food, delicious water with no odor of chlorine is desired as drinking water, and the market for water such as mineral water, natural water, and famous water expands. , The demand for water purifiers etc. to remove the chlorine smell in tap water is increasing.

The increase in demand for this water purifier is further accelerated by the fact that it has been confirmed that the carcinogen trihalomethane and harmful organic chlorine compounds are produced by chlorine sterilization at the water purification plant. Is.

Currently, in order to remove the residual chlorine in tap water and drinking water, the following adsorbents, chemical decomposing agents, etc. are used in water purifiers and water purifiers, and also for water purification. Being developed.

Activated carbon is a porous material containing carbon as a main component and having a large specific surface area. Due to polar groups such as hydroxyl groups and carbonyl groups on the surface, activated carbon is mainly used for polar chemical substances such as inorganic ions and organic acids. It is physically adsorbed.

Further, due to its versatility, it is used in a wide range from general households to industrial scales.

The ion exchange resin removes residual chlorine (hypochlorite ion) in tap water by the so-called ion exchange ability of exchanging ions retained on the surface of the ion exchange resin with ions in tap water. It is widely used for water softening / desalting and purification.

Calcium sulfite decomposes residual chlorine by utilizing its reducing property. In addition, calcium sulfite reacts rapidly with residual chlorine, so the time required for removal is extremely short, and even if it is oxidized and consumed, the effect will continue as long as the calcium sulfite preparation remains, and it will be inexpensive. It has various advantages that the amount of treated water per unit amount is large. Appropriately, it is applied to a water purifier after being formed into a tablet using ethyl cellulose or the like for the purpose of improving the easiness of handling and imparting the sustained release of the active ingredient. This is disclosed in JP-A-54-105844.

[0013]

However, the above-mentioned conventional water purifying agents and water purifying methods have various problems as described below.

That is, in the removal of residual chlorine, when activated carbon is used, the removal efficiency is remarkably reduced, and the organic matter adsorbed by activated carbon is used as a nutrient source for the growth of microorganisms.
There was a problem that water was contaminated rather than purified.

Further, the ion exchange resin has a problem that it has a low exchange efficiency of hypochlorite ion and requires a long time for removal and is expensive, and this is particularly remarkable when it is used in a general household. It was

Further, although calcium sulfite has various advantages as described above, there is a problem that the water after treatment is acidified by the reaction between calcium sulfite and residual chlorine, especially in the hot summer season. Since a large amount of chlorine is input at the water purification plant, the residual chlorine concentration becomes high (often it is 10 ppm or more in tap water of general households), and the acidity after treatment becomes extremely high, making it a beverage. There was a problem that it became unsuitable.

Therefore, when the residual chlorine concentration is greatly changed, that is, when calcium sulfite is used as a water purifying agent for water purifiers in general households, the pH of the treated water greatly fluctuates and a stable quality beverage is obtained. There is a problem that water is not obtained and it is unfavorable for hygiene / health in some cases, and there is a great risk that the original purpose of the water purification agent is impaired.

Further, due to the above-mentioned problems, although calcium sulfite has an excellent advantage that other water purifying agents do not have, the use as a water purifying agent in general households is restricted and widely spread. The current situation is that they have not.

Therefore, while maintaining the advantages of calcium sulfite having a high residual chlorine treatment capacity and a low price, drinking water of sanitary and stable quality can be obtained by eliminating the pH fluctuation of the treated water due to the residual chlorine concentration fluctuation of the water to be treated. The advent of water purifiers that can be constantly obtained even in ordinary households has long been awaited.

The present invention has been made in view of the above circumstances, and a porous body containing calcium carbonate as a main component, a clay mineral, and gypsum or zeolite are mixed and baked to obtain an alkaline component. By forming a sustained-release agent and combining the alkaline component sustained-release agent (ceramic) and calcium sulfite, the above-mentioned advantages of calcium sulfite can be retained, while simple and rapid removal of residual chlorine, pH fluctuation suppression and high durability can be achieved. The present invention provides a water purifier and a water purifier for drinking water for general households.

[0021]

The present invention provides (1) 30 to 70% by weight of natural coral or coral fossil containing calcium carbonate as a main component, 10 to 35% by weight of gypsum or zeolite, and 10% of clay mineral. By providing a water purification agent characterized by a mixed preparation obtained by mixing a granular ceramic obtained by firing a mixture containing at a ratio of ˜50% by weight at 750 to 1050 ° C., and a granular sulfite, (2) Further, a mixed preparation container in which a sponge is laid on the bottom of a container having a hole on the bottom surface, the water purifying agent according to (1) above is filled, the sponge is placed on the sponge, and a lid having a hole is provided. By providing a water purifier having a structure in which a synthetic resin filter is inserted into a main body container laid on the bottom and a main body lid having a rubber portion attached to a water faucet is closed, (3) (2) Description By providing a water purifier, characterized in that a donut-shaped permanent magnet inside the body vessel purifier, is to achieve the above object.

That is, the present invention is, for example, wet-mix grinding of natural coral stones, coral fossils, which are porous bodies containing calcium carbonate as a main component, clay minerals (such as kaolin-based or montmorillonite-based), and gypsum or zeolite. The product is subjected to a molding processing step and a drying step to form a granular sustained release agent of an alkaline component, and by combining the alkaline component sustained release agent and calcium sulfite, the above advantages of calcium sulfite are retained. At the same time, it is intended to provide a water purifier and a water purifier for general domestic drinking water, which enables simple and quick removal of residual chlorine, suppression of pH fluctuation, and high durability.

[0023]

EXAMPLES The present invention will be described in more detail below with reference to examples.

First of all, Examples A, B, and C concerning a method for producing and preparing a ceramic (sustained release agent) of an alkaline component.
Indicates. In addition, natural coral stone or coral fossil as a porous body whose main component is calcium carbonate is cost, processability,
It is most suitable for the present invention because it is easily available.

(Example A) 10 kg of natural coral stone, 4.5 kg of gypsum, and 7 kg of kaolin-based clay mineral were wet-mixed and crushed to make coarse particles fine and clay-like.

Next, this was molded into a substantially cylindrical shape (bottom diameter 1.5 mm, height 4 mm) by an extrusion molding machine.

Further, after drying, it was baked at 830 ° C. to obtain a sustained release agent (ceramic) of an alkaline component.

(Example B) Natural coral stone 3 which was previously heat treated to release carbon dioxide gas 3
0 kg, 13 kg of zeolite, and 15 kg of montmorillonite-based clay mineral are wet-mixed and crushed to make coarse particles fine and clay-like.

Next, this was molded into a substantially cylindrical shape (bottom diameter 2 mm, height 5 mm) by an extrusion molding machine.

Further, after drying, it was fired at 900 ° C. to obtain a sustained release agent (ceramic) of an alkaline component.

(Example C) Coral fossil 10 which was previously heat-treated to release carbon dioxide gas
kg, gypsum 5 kg, montmorillonite clay mineral 7
Kg and wet are mixed and crushed to make coarse particles fine and clay-like.

Next, this was molded into a substantially cylindrical shape (bottom diameter 2 mm, height 5 mm) by an extrusion molding machine.

Further, after drying, it was baked at 850 ° C. to obtain a sustained release agent (ceramic) of an alkaline component.

Next, Table 1 shows the results of the property test of the ceramics and natural coral stones obtained in Examples A to C.
In this test, 50 g of each sample was placed in a 1 L beaker, and 1 L of distilled water was gently poured into the beaker and allowed to stand, and the change in pH with time was measured.

[0035]

[Table 1]

Further, 10 g of the ceramic sample obtained in Example B was put in 100 mL of distilled water, well stirred and dispersed, and allowed to stand for 30 minutes, and the pH and electric conductivity of the supernatant were measured. It was 10.11 and the electric conductivity was 285 (μS / cm).

From these measurement results, it was revealed that the ceramic of the present invention has a sustained release property of the alkaline component.

In the production and preparation of the ceramic of the present invention, when the firing temperature is set to 1050 ° C. or higher, the ceramic becomes concrete and the sustained release property of the alkaline component becomes small, and the firing is performed at 750 ° C. or lower. Then, there occurs a phenomenon in which each molded product adheres and fuses in water, and fine particles float in water. Therefore, as a water purifying agent, the firing temperature should be set in the range of 750 ° C to 1050 ° C.

That is, the above firing temperature range gives an important condition for the sustained release property of a mixture of natural coral stone or coral fossil, gypsum or zeolite, and clay mineral, which are the constituents of the present invention, as a water purifying agent. Is.

Next, the granular ceramics obtained in Examples A, B and C above are mixed with granular calcium sulfite to give a mixed preparation.

The above-mentioned calcium sulfite is a sustained-release preparation which is easy to handle and can be used for a long period of time.
The powdered calcium sulfite is made into a granular sustained-release preparation by the means described in 4-105844.

Next, a structural example in which a mixed preparation comprising the granular (substantially cylindrical) ceramic 18 and granular calcium sulfite 20 is used as a water purifier in a water purifier will be described with reference to an exploded perspective view of the water purifier shown in FIG.

First, the mixed preparation container 14 having holes on the bottom surface.
A sponge 16 slightly larger than the bottom is laid on the bottom of the container, and the mixed preparation container 14 is filled with a water purifying agent composed of the ceramic 18 and granular calcium sulfite 20 and a sponge 22 is placed on the sponge 22 and a lid 24 having a hole is provided. To do.

Next, the mixed preparation container 14 filled with the water purifying agent is inserted into the main body container 10 having the synthetic resin filter 12 laid on the bottom, and the main body lid 26 is closed to form a water purifier.

This water purifier is attached and used by inserting the water faucet 30 into the rubber portion 28 of the main body lid 26 as shown in FIG.

As described above, the water purifier has an extremely simple structure, and it is possible to easily replace the water purifying agent and clean the container, and the product price and maintenance cost can be extremely low.

Table 2 shows the results of the residual chlorine concentration removal and pH stability test using this water purifier. This test was conducted assuming that the amount of chlorine input may increase during the hot summer months and the residual chlorine concentration at the end of general households may rise to about 10 ppm. It is a measurement of residual chlorine concentration and pH before and after the treatment.

In this test, 50 g of the ceramic obtained in Example 5 and 50 g of calcium sulfite sustained-release preparation were used.
A mixed preparation was prepared in the above step and filled in the mixed preparation container 14. Further, as a comparative control, the mixed preparation container 14 filled with only 50 g of the calcium sulfite sustained-release preparation was used.

The residual chlorine concentration was measured by the orthotolidine colorimetric method, and the pH was measured by the glass electrode method.

[0050]

[Table 2]

From Table 2, by combining the ceramic of the present invention with calcium sulfite, acidification of water due to residual chlorine decomposition of calcium sulfite is prevented,
It was revealed that fluctuations can be suppressed.

When 200 L of tap water is treated per day with the water purifier of the present invention used in the above test, 210
It was confirmed that the effect of removing residual chlorine and the effect of suppressing pH fluctuation were maintained over a period of time, long-term use was possible, and the advantage that calcium sulfite had a large amount of treated water per unit amount was retained. .

This means that the water purifier using the commercially available activated carbon is excellent in the water purifier of the present invention, considering that the residual chlorine removing effect can be maintained only for 3 months by treating 20 L of tap water per day. It is obvious that it is a thing.

Further, even if the water purifier of the present invention was not used for 6 months, the residual chlorine removing effect and the pH fluctuation suppressing effect were not reduced.

When the residual chlorine removing effect and the pH fluctuation suppressing effect decrease, the lid 24 of the mixed preparation container 14 is opened, the calcium sulfite sustained release preparation 20 is refilled, and the ceramic is replaced with a new one. If you do or fill the scrap of the used ceramic surface,
It can be used again as a water purifier.

Further, since the ceramics (containing gypsum or zeolite (adsorption medium)) obtained in Examples A, B, and C described above have an increased adsorbing ability for inorganic ions, heavy metal ions such as Cr3 + which are harmful to the human body can be obtained. It is suitable for the purpose of tap water purification because it adsorbs Pb2 + and Pb2 +.

Next, a water purifier in which the water purifying agent obtained in the above embodiment and a permanent magnet are combined will be described.

The water purifier in this case is assembled in the same manner as the water purifier of FIG. 1 described above, but with a configuration in which a donut type permanent magnet is inserted inside the main body container, for example, in the mixed preparation container 14. There is.

In the embodiment of the present invention, a doughnut-shaped permanent magnet of 1200 G (having a size and an inner ring diameter that does not deteriorate the outflow of water from the water purifier) is used by being buried in the mixed preparation.

This permanent magnet has the function of reducing the water molecule group (cluster) of tap water, and as a result, (1) no odor of chlorine is required for delicious water, and (2) water. Drinking water satisfying all three conditions of small molecular cluster (3) and weak alkalinity (rich in mineral components) has become available easily and at home by using tap water.

Of course, in the water purifier of the present invention, since the porous body containing calcium carbonate as a main component (natural coral stone or coral fossil) is used, elution of Ca component is observed, and Ca is chronically insufficient. It can play a role in the prevention of adult diseases in Japanese.

Although the present invention has been described based on the embodiments, the present invention is not limited to these.

For example, the manufacture of the ceramic according to the present invention
The clay mineral used for the preparation is not limited to kaolin-based and montmorillonite-based clay minerals, as long as it has tackiness and can be a plastic raw material suitable for molding.

Further, it goes without saying that the shape of the ceramic according to the present invention is not limited to the substantially cylindrical shape, and may be spherical or flat.

As a substitute for the calcium sulfite used in the above examples, other sulfite having a reducing power can be used.

The amounts of the ceramic according to the present invention and the calcium sulfite used need not be equal, but can be changed as appropriate depending on the fluctuation range of the residual chlorine concentration, the water temperature, etc. Since calcium sulfite is consumed if is continuously used, the ratio is constantly changing.

Also, the permanent magnet used in the present invention may be any one as long as it has magnetism that exerts the magnetic effect of reducing water clusters. It doesn't matter.

Further, the place of installation may be installed in the vicinity of the lid inside the main body container, in addition to being immersed in the mixed preparation, where the magnetic treatment of water is performed, that is, the magnetic field lines act on water. You can do it.

When the present invention is applied to a water purifier, the shape, structure, etc. of the water purifier are not limited to those shown in the drawings, but the alkaline component sustained release of the ceramic of the present invention can be controlled. It is sufficient that the effect and the effect of removing residual chlorine of calcium sulfite are appropriately exhibited.

[0070]

The water purification agent and water purifier according to the present invention are
Since it is configured as described above, it has the following effects.

(1) The water-purifying agent according to the present invention is a mixture of natural coral stone or coral fossil, which is a porous body containing calcium carbonate as a main component, which is abundant and available at low cost, gypsum or zeolite, and clay mineral. Since it is a mixed preparation of inexpensive ceramics obtained by firing and granular sulfite, it has an excellent effect that the cost is low.

(2) The water-purifying agent as a mixed preparation according to the present invention retains the high residual chlorine treatment capacity of calcium sulfite, and the water after the reaction between residual chlorine and calcium sulfite is acidified. It has an excellent effect that the point is overcome by an alkaline component which is gradually released from the granular ceramic and the effect lasts for a long time.

(3) The water purifier according to the present invention has an extremely simple structure and has an excellent effect that it is easy to replace the water purifying agent and clean the container.

(4) When the water purifier according to the present invention is used in an ordinary household, drinking water of stable quality, which does not change in pH of treated water, is constantly maintained even in the summer when the residual chlorine concentration changes greatly. And has excellent hygiene and health effects.

(5) By using the water purifier according to the present invention and the water purifier in which the permanent magnet is arranged, the three conditions of delicious water (no odor of chlorine, small clusters, weak alkalinity) are satisfied, and Since the Ca component is eluted, it has an excellent effect that delicious mineral water can be easily produced from tap water at the end of general households.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a water purifier according to the present invention.

FIG. 2 is a front view showing an installation example of the water purifier according to the present invention.

[Explanation of symbols]

 10 Main Container 12 Synthetic Resin Filter 14 Mixed Preparation Container 16 Sponge 18 Ceramic 20 Calcium Sulfite (Slow Release Preparation) 22 Sponge 24 Lid 26 Main Lid 28 Rubber Part 30 Water Tap

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication C02F 1/68 N 530 C 540 A F H B01J 20/04 B C02F 1/28 E 1/48 A 1/58 CDW L 1/66 510 C 521 A N 530 B 540 A F H 1/70 Z

Claims (3)

[Claims] 1. A mixture containing 30 to 70% by weight of natural coral stone or coral fossil containing calcium carbonate as a main component, 10 to 35% by weight of gypsum or zeolite, and 10 to 50% by weight of clay mineral. A water purification agent characterized by a mixed preparation obtained by mixing granular ceramics obtained by firing at 750 to 1050 ° C. and granular sulfites. 2. A mixed preparation container comprising a container having a hole on the bottom and a sponge laid on the bottom of the container to fill the water purification agent according to claim 1, the sponge placed on the sponge, and a lid having the hole. , A water purifier characterized by a structure in which a synthetic resin filter is inserted into a main body container laid on the bottom, and a main body lid having a rubber part attached to a water faucet is closed. 3. A water purifier, wherein a donut-shaped permanent magnet is arranged inside a main body container of the water purifier according to claim 2.