JPH06304576A - Portable water purifying agent and its production - Google Patents

Abstract

PURPOSE:To efficiently remove the residual chlorine, etc., in city water with a small amt. of a purifying agent by sticking green tea extracts to natural coral sand. CONSTITUTION:The required purifying agent is obtd. by combining the natural coral sand which is aragonite type calcium carbonate liable to be soluble in water and is a very small sandy granular material opened with 10 to 50mum small holes to all corners like the holes of a lotus root with the green tea extracts and sticking the green tea extracts to the natural coral sand. The coral sand stuck with the green tea extracts is more preferably enveloped by a non-woven fabric, by which the properties of the meshed entanglement of the non-woven fabrics are utilized to rapidly effect the contact with the water and the reaction in the water. This purifying agent is produced by agitating and mixing the natural coral sand and the green tea extracts, then subjecting the mixture to a drying treatment. The green tea extracts are so added to the natural coral sand that the ratio of the former is 0.1 to 20 pts.wt. per 100 pts.wt. the latter.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning agent for drinking water, and more particularly to a cleaning agent for removing residual chlorine in tap water and a method for producing the same.

[0002]

2. Description of the Related Art In recent years, the quality of drinking water in urban areas has been deteriorating. Although the source water of drinking water contains various chemical substances and microorganisms, it is treated as drinking water to become drinking water. It is said that the residual component of chlorine for sterilization used for treating the source water (chlorinated odor) is mainly the odor.

Conventionally, in order to reduce / remove this residual chlorine, many reactor water vessels filled with activated carbon have been used. Further, as the water quality improving agent, fossil corals and natural reef-building corals that have been heat-activated, or those that have added anti-septic effects by adding silver to these water quality improving agents are known (( JP-A-63-5642).

[0004]

[Problems to be Solved by the Invention]

The water quality improver utilizing natural coral is mainly aimed at the action of mineral water by dissolving Ca in water and the removal of chlorine. However,
Conventional water quality improvers have no practical effect because they are not effective unless about several tens of grams are added to 1 liter of drinking water. Therefore, an object of the present invention is to provide a natural coral-based drinking water purifying agent and a method for producing the same, in which an excellent purifying action can be obtained even when added in a small amount.

[0006]

The first aspect of the present invention is a drinking water purifying agent characterized by spreading a green tea extract on natural coral sand, and the second aspect of the present invention is to provide a green tea extract. A drinking water purifying agent characterized in that the spread natural coral sand is wrapped with a non-woven fabric, and the third aspect of the present invention is to stir and mix the natural coral sand and the green tea extract, and then dry the mixture. A method for producing a characteristic drinking water purification agent.

Natural coral is an aragonite type calcium carbonate which has a crystal form different from that of calcium compounds such as limestone and shell fossil, and is easily soluble in water, and small holes of 10 to 50 μm are opened like lotus root holes in every corner. Table 1
As illustrated in (2), it contains calcium carbonate as a main component and contains a large amount of minerals.

[0008]

Table 1 Ca 36.3-38.7% CaO 45.7-54.1% CaCO3 94.5-16.5% N 0.02% P 0.13% K 0.03% Na 0.24 % S 0.42% Cl 0.003% Mg 2.86 Si 0.1%

Further, the green tea extract is known as a deodorant for foods, pharmaceuticals, refrigerators, etc., and contains tannin, catechin, flavonoid, etc., and has the property of exhibiting a flavono effect containing no vitamin C. The flavono effect is a general term for the deodorizing effect of flavonoids in green tea extract and reduces the malodorous components such as ammonia, trimethylamine hydrogen sulfide and methyl mercaptan. A method for producing an extract in green tea is described in Japanese Patent Publication No. 1-24506. That is, the green tea component separation method is tea, using dry tea as an extraction solvent,
Using glycerin or propylene glycol alone or a mixture thereof, at an extraction temperature of 180 ° C to 220 ° C, 5
A dark brown extract is obtained by performing extraction for about the time. Silica gel was added to the extract to adsorb the active ingredient, and the extract was distilled (back-extracted) with ethyl ether, and water was added to separate the active ingredient from the ethyl ether into an aqueous solution to obtain a green tea extract . In the above extraction process, vitamin C should be decomposed when the extraction temperature is 180 ° C to 220 ° C, and the active ingredient of green tea and vitamin C are separated when adsorbing the alcohol extract on silica gel. Is not adsorbed on silica gel, so vitamin C is not contained in the green tea extract.

The inventor of the present invention has conducted repeated tests to remove residual chlorine and the like in drinking water by using natural coral sand and green tea extract individually, or by combining both, and as a result, natural coral sand alone has residual chlorine in drinking water. A large amount of natural coral reefs are required to remove water, but it was found that the combination of natural coral sand and green tea extract removes residual chlorine in tap water by adding an extremely small amount to drinking water. did. Further, natural coral tends to dissolve chlorine from seawater in drinking water, but it has been found that this tendency disappears when combined with a green tea extract, and the present invention has been completed.

In the present invention, the natural coral sand and the green tea extract are combined to spread the green tea extract on the surface of the natural coral sand, which makes use of the pore activity of the natural coral reef sand, and It is most desirable in terms of removing residual elements, etc., because it exhibits the fast-acting properties of green tea extract.

[0012] Furthermore, by wrapping the coral sand spread with the green tea extract in a non-woven fabric, the contact with water and the reaction in water can be performed quickly by utilizing the nature of the non-woven fabric entangled in a small mesh. It is possible to obtain a preferable result in terms of visibility.

The drinking water purifying agent of the present invention can be produced by a method in which natural coral sand and a green tea extract are stirred and mixed, and then dried. In this case, 0.1 to 20 parts of green tea extract (containing 50% of water) based on 100 parts by weight of natural coral sand.
It is preferable to add it so that it may be added by weight. The present invention will be described in detail below with reference to examples.

In the examples, natural corals having the composition shown in Table 1 were used. As the green tea extract, the one having the following composition produced by the method of Japanese Patent Publication No. 1-24506 was used. General analysis (wt%)-water: 55.3%; fat:
0.1%; ash: 0.9%; total nitrogen: 0.83%; anhydrous caffeine: 1.7%; tannin: 19.4%; total sugar:
12.8%; ethanol: 1.43% free amino acid (unit mg / 100 g (sample) -arginine /
Lysine: 2 ↓ / 1 ↓; Histidine / Phenylalanine:
1 ↓ / 10; tyrosine / leucine: 9/9; isoleucine / methionine: 13/1 ↓; valine / alanine: 17
/ 25; glycine / proline: 1/7; glutamic acid /
Serine: 30/21; Threonine / Aspartic acid: 1
3/6; tryptophan / cystine: 5/1 ↓; free tinian 278; free glutamine 1; free asparagine 7 quantification of sugar (unit wt%)-fructose (fructose) 0.
96%; glucose (glucose) 0.58%; sucrose (sucrose) 9.00% tannins-gallic acid: 0.42%; (-)-epicakitene: 1.1%; D-(+)-caquitene: 0.23% flavonoids (unit: mg / 100g) -rutin / hyberin 29/12; isoquercitron / quercitrin:
6.3 / 1.9 Hydrolyzed aglycone (glycoside) 37 (mg / 100
g); Myricetin: 130 Quercetin: 64 Vitamin-total aspinic acid (vitamin C) not detected Others: Mineral content Ca 14.6 mg / 100 g; M
g 20.9 mg / 100 g; Na 40.7 mg / 100
g; K615mg / 100g; F3ppm

100.0 g of natural coral sand and 1.00 g of green tea extract-50% water content were mixed and then dried at 100 ° C. 0.1 to 0.8 g of the obtained purifying agent was added to 1 liter of tap water, the mixture was stirred for 5 minutes, and residual chlorine was quantified by a method according to JIS KO102-1986 (33. residual chlorine P86). .

[0016]

[Table 2] Addition amount Residual chlorine reduction rate (g / l) (mg / l) (%) 0 0.36-0.1 0.28 22.2 0.2 0.14 61.1 0.4 0 0.08 77.8 0.6 0.05 86.1 0.8 <0.01> 97.0

From the results shown in Table 2, it can be seen that the natural coral sand spread with the green tea extract has a remarkable chlorine removing effect with a small amount of use.

Comparative Example 10 g of untreated natural coral sand was added to 1 liter of city water and stirred for 15 minutes. As a result, residual chlorine remained in city water. The results are shown in Table 2.

[0019]

[Table 2] City water number Residual chlorine Ammonia Ca Mg Total nitrogen PH (24 ℃ 0.22 <0.2 20.3 4.20 1.98 7.6 0.27 <0.2 21.2 4.34 1.98 7.6

Toda City tap water (blank) is a comparative example.

[0021]

As described above, according to the present invention, the cost of the water purifying agent is reduced because the water purifying effect excellent in the removal of residual chlorine and organic matters can be achieved with a small amount; Practical advantages such as almost never being taken into the human body can be obtained.

Claims (4)

[Claims] 1. A drinking water purifying agent characterized by spreading a green tea extract on natural coral sand. 2. A drinking water purifying agent characterized in that natural coral sand spread with a green tea extract is wrapped with a non-woven fabric. 3. Stir-mixing with natural coral sand and green tea extract,
A method for producing a drinking water purifying agent, characterized by performing a drying treatment thereafter. 4. A drinking water purifying agent according to claim 3, wherein 0.1 to 20 parts by weight of the green tea extract (containing 50% of water) is added to 100 parts by weight of natural coral sand. Method.