JP2673644B2 - 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 purifying agent capable of deodorizing and obtaining drinking water containing a mineral source such as calcium by passing the drinking water.

[0002]

2. Description of the Related Art Conventionally, as an adsorbent and a water quality improving material using coral sand mainly called calcium carbonate as the main component of the present invention or coral sand called coral sand (hereinafter simply referred to as "coral"). , It has been proposed to burn coral (Japanese Patent Publication No. 56-18250).
(See Japanese Patent Publication No. 3-12953).

That is, porous coral containing calcium carbonate as a main component is baked to further develop fine pores to enhance the adsorption removal rate of heavy metal ions, chlorine and the like, and at the same time elute calcium and other mineral components. Is possible.

[0004]

The adsorbents and water quality improvers according to the above-mentioned conventional methods are those in which coral is fired at a high temperature in the production thereof, so that a heating furnace must be prepared, and further firing etc. It required cost and skill for production such as selective control of firing temperature and firing time suitable for the state of coral to be used, uniform firing and the like.

The present invention has been made in view of the above circumstances, can be provided at low cost without requiring labor for manufacturing, and
It is an object of the present invention to provide a water purifying agent having a deodorizing effect by enhancing the elution effect of calcium and other mineral components.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the present invention immerses coral in an aqueous solution of citric acid or acetic acid to impart softness to the extent that it can be broken by a hand or a finger, and then pulls it out of the aqueous solution. It is washed with water and dried.

[0007]

In the present invention, corals are immersed in an aqueous solution of citric acid or acetic acid prepared in advance. While the aqueous solution of citric acid or acetic acid has a strong sourness during the coral dipping, if the dipping is continued, it neutralizes with the alkaline coral to lose the sourness, and at the same time, the coral is given softness.

That is, coral having a hardness that cannot be crushed in the natural state without using a hammer or the like,
Immersion in the aforementioned citric acid or acetic acid makes it soft to be crushed by hands or fingers.

After that, the citric acid or acetic acid is dissolved in water.
The water purifier of the present invention is completed by lifting it from the liquid, washing it with water and drying it. 30 liters, 1000 liters, 30 liters, 1000 liters, 3) are filled with a water purifier formed by immersing in a citric acid aqueous solution and filled in a water purifier to pass tap water (hereinafter simply referred to as “raw water”).
Table 1 shows the results of analysis of the water passed through the water purifier when water of 000 liters and 5000 liters was passed.

According to Table 1, it was confirmed that the values of calcium and other mineral components were higher than those of raw water, and that they were continuously eluted and that residual chlorine (calcinous odor) was removed. Is.

[0011]

An embodiment of the present invention will be described below. To 1 liter of water, add 160 grams of citric acid and stir to prepare an aqueous citric acid solution. Next, 1 kg of coral was immersed in the aqueous citric acid solution, and the immersion was continued for 24 hours. Then, the coral was pulled up from the citric acid aqueous solution, washed with water, and then dried with hot air. The drying may be natural drying.

In the above examples, the citric acid aqueous solution in which the coral was immersed initially had a strong sour taste, but the sour taste disappeared after 5 or 6 hours. That is, it seems that the coral was neutralized by the alkaline coral and simultaneously penetrated into the coral. At this point, the coral was whitish from the beginning.

Table 1 below shows the test analysis results (requested by the Chemicals Inspection Association of Japan) of the water purifying agents obtained in the above Examples.

[0014]

[Table 1] As described above, in the above test, raw water (tap water) was passed through a water purifier filled with the water purifying agent to obtain 30 liters, 1000 liters.
Sample water was used as the liquid passing through the water purifier at the time of passing liters, 3000 liters, and 5000 liters.

The test items and test methods are as follows.

Test item Item Test method Hydrogen ion concentration (pH) Water test method VII 8.3 Glass electrode method Calcium (Ca) Water test method VII 43.2 Atomic absorption method Magnesium (Mg) Water test Method VII 40.2 Atomic absorption method Sodium (Na) water test method VII 39.2 Atomic absorption method Potassium (K) Water test method VII 42.2 Atomic absorption method Silica (SiO ₂ ) Water test method VII 28. 2.1 Molybdenum yellow method Residual chlorine water test method VII 28.2.1 Ortho-trizine method Trihalomethanes Water test method VII 64.2.2 Solvent extraction method Carbonic acid JIS K 0101 25.2 Infrared analysis method As a result of conducting experiments by changing the concentration of citric acid, the immersion time, etc., the concentration of citric acid was 30 g / liter of water. 00 g and is suitably within the range of immersion time was found to be suitable in the range of 50 hours 15 hours.

That is, if the concentration of the citric acid aqueous solution and the immersion time do not reach the above conditions, the coral is not given softness, and the concentration and the immersion time of the citric acid aqueous solution are over the above conditions. In this case, when drinking water is passed through, coral elution becomes severe and milky white water is not appropriate.

According to Table 1, the amount of calcium initially eluted is extremely large, and thereafter the value is higher than that of the raw water, other mineral components are also higher than that of the raw water, and the amount of residual chlorine is continuously eluted and the residual chlorine content is high. It was confirmed that the (challenge smell) was removed.

Table 2 below shows the test analysis results of the water purifiers manufactured according to other examples. That is, the concentration of the citric acid aqueous solution was changed to 160 liters per liter of water, as in the above-mentioned embodiment.
Grams of citric acid were added, the amount of coral to be dipped therein was also set to 1 kilogram, and the initial dipping time was also set to 24 hours. It is immersed in a citric acid aqueous solution for 24 hours. That is, the total immersion time in the citric acid aqueous solution was 48 hours.

[0020]

[Table 2] In the same manner as described above, the above test was carried out by passing raw water (tap water) through a water purifier filled with the above water purifying agent to obtain water purifiers of 30 liters, 50 liters, 100 liters, 500 liters, 1000 liters and 3000 liters. The passing liquid was used as sample water.

After passing 3000 liters of water, water is stopped for 1 hour, water is restarted immediately, and after 72 hours left, the water purifier is shaken, water is passed immediately after water is started, and water is passed for 5 minutes. The liquid was used as sample water, and the calcium concentration was tested by the clean water test method VII 43.2 atomic absorption method.

According to Table 2, it was confirmed that the value of calcium in the raw water was high and that it was continuously eluted. It should be noted that the above effect is almost the same when acetic acid is used.

[0023]

According to the present invention, it is sufficient to prepare an aqueous solution of citric acid or acetic acid, immerse the coral in the aqueous solution of citric acid or acetic acid for an appropriate time, and then wash and dry it. Since the cost is low and the skill is not required for manufacturing, the cost can be reduced.

Claims (1)

(57) [Claims] 1. A purified water obtained by immersing coral in an aqueous solution of citric acid or acetic acid to impart softness to the extent that it can be crushed with hands and fingers, and then withdrawing from the aqueous solution, washing with water and drying. Agent.