JPH10471A - Mineral water production equipment - Google Patents

Abstract

(57) [Summary] [Problem] Even when a hardly soluble component such as calcium carbonate, slaked lime, quick lime or the like is used as a mineral component-containing substance, the mineral component is quickly eluted, and the mineral having an arbitrary concentration or an appropriate concentration is obtained. It is an object of the present invention to obtain a mineral water production device capable of efficiently producing water. SOLUTION: The water to be treated is separated into acidic water and alkaline water in an electrolytic tank 2 having at least one or more pairs of electrode plates 21 and 22, and the acidic water is brought into contact with a mineral component-containing substance 3 such as calcium carbonate. Elute mineral components quickly,
Thereafter, it is combined with alkaline water. Thus, even when a poorly soluble component is used as the mineral component-containing substance, mineral water can be efficiently produced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mineral water producing apparatus for adding a mineral component to water to be treated.

[0002]

2. Description of the Related Art Conventionally, a mineral water producing apparatus for adding a mineral component to water to be treated is disclosed in Japanese Patent Application Laid-Open No. Sho 62-9519.
No. 3 is known.

FIG. 2 shows a mineral water producing apparatus disclosed in the publication. Reference numeral 30 denotes a raw material storage container at least a part of which is permeable so that water to be treated can flow. A mineral water producing agent 31 containing activated carbon and inorganic salts (eg, potassium chloride) is contained so as to be in contact with the water to be treated flowing through.

[0004] By passing treated water such as tap water through this production device, free chlorine in the treated water is adsorbed and decomposed, mold odor and trihalomethane are adsorbed, and inorganic salts are eluted into the water. Let it produce delicious mineral water.

[0005]

In such a mineral water producing apparatus, as a mineral component-containing substance, a readily soluble salt such as potassium chloride or calcium chloride, or
Poorly soluble components such as calcium carbonate, slaked lime and quicklime are used.

When a readily soluble salt such as potassium chloride or calcium chloride is used, since it dissolves in treated water quickly,
It is necessary to frequently replenish the salt or increase the capacity of the salt, and the former has a problem of maintainability, and the latter has a problem of compactness. Further, when the chloride salt is dissolved in the water to be treated, the chloride ion concentration increases, which adversely affects the taste and the like.

Further, when a hardly soluble component such as calcium carbonate, slaked lime or quick lime is used as the mineral component-containing substance, the mineral component such as calcium hardly elutes.
It is necessary to increase the capacity of the circulation type or salt, and in the former, the abnormal occurrence of bacteria and the processing speed,
In the latter case, compactness is a problem, and it is generally difficult to control the mineral concentration of the treated water within an appropriate range.

[0008] The present invention provides a mineral-containing material,
It is an object of the present invention to obtain a mineral water production apparatus that can quickly elute mineral components even when using poorly soluble components such as calcium carbonate, slaked lime, quick lime, etc., and efficiently produce mineral water of any concentration or an appropriate concentration. And

[0009]

In the apparatus for producing mineral water of the present invention, the water to be treated is separated into acidic water and alkaline water in an electrolytic cell having at least one or more electrode plates, and the acidic water is separated from calcium carbonate. And the like, so that the mineral component is quickly eluted by contact with a mineral component-containing substance, and then is combined with the alkaline water.

Thus, even when a poorly soluble component is used as the mineral component-containing substance, mineral water can be produced efficiently.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION According to the first aspect of the present invention, water to be treated is separated into acidic water and alkaline water in an electrolytic cell having at least one pair of electrode plates, and the acidic water is converted into calcium carbonate or the like. After contacting with the mineral component-containing substance to quickly elute the mineral component, it is made to merge with the alkaline water.Thus, even when a poorly soluble component is used as the mineral component-containing substance,
It has the effect of quickly eluting mineral components into the water to be treated.

According to a second aspect of the present invention, a carbon source is provided on the anode plate of the electrolytic cell so that carbon dioxide gas is generated during electrolysis. It has the effect of maintaining the dissolved state.

According to a third aspect of the present invention, there is provided a means for controlling an electrolysis voltage or current to set an arbitrary electrolysis condition, so that an appropriate elution or an arbitrary elution of a mineral component into water to be treated is performed. Has the effect of enabling.

The invention according to claim 4 has a measuring function for measuring the mineral component concentration, conductivity and the like of the treated water, displaying the result, and controlling the electrolytic voltage or current for adjusting the concentration. Means for making the information
It has the effect of enabling the mineral components to be appropriately eluted into the water to be treated or to be arbitrarily eluted.

According to a fifth aspect of the present invention, the anode plate of the electrolytic cell has reverse voltage means to prevent scale of calcium carbonate, calcium hydroxide, etc. on the cathode plate of the electrolytic cell.
It has the effect that stable operation can be performed over a long period.

According to a sixth aspect of the present invention, there is provided a method for removing residual chlorine such as activated carbon after an acidic water outlet of an electrolytic cell or after contact with a substance containing a mineral component or after merging with alkaline water. It has the effect of removing residual chlorine and halogenated organic substances, removing odors, and improving safety.

According to a seventh aspect of the present invention, a residual chlorine removing substance such as activated carbon is mixed with a substance containing a mineral component, and the residual chlorine and the halogenated organic substance contained in the acidic water are removed by a more compact apparatus. It has the effect of removing odors and improving safety.

The invention according to claim 8 has a pretreatment means such as removal of organic substances and residual chlorine from the water to be treated in the electrolytic cell by activated carbon and the like, and removal of fine particles and bacteria by a hollow fiber membrane filter and the like. In addition, there is an effect that safer and more delicious water can be realized by removing impurities contained in the water to be treated as much as possible.

The invention according to the ninth aspect has a means for post-treating the treated water in the electrolytic cell with a hollow fiber membrane filter or the like. It has the effect that delicious water can be realized.

An embodiment of the present invention will be described below with reference to FIG. FIG. 1 shows a conceptual diagram of a mineral water producing apparatus of the present invention. In FIG. 1, an organic substance removal layer 1 is for realizing removal of organic substances of water to be treated by adsorption or the like, and preferably as a filler. Activated carbon or the like can be used. As the activated carbon, for example, a granular activated carbon, a molded product of powdered activated carbon, activated carbon fiber, and the like can be used. In particular, the granular activated carbon is more preferable because the cost is relatively low.

The electrolytic cell 2 is used to separate the water to be treated into acidic water and alkaline water by electrolysis, and to dissolve carbon dioxide gas or add fine bubbles to the acidic water. For the housing, a general-purpose synthetic resin such as ABS or polypropylene can be used.

The anode 21 is a conductive substance for electrolysis, and preferably has a plurality of or a single mesh, plate, or column. Further, as the material, a combination of a carbon source such as carbon graphite or activated carbon or activated carbon fiber and platinum-plated titanium or platinum alone can be used. As the conductive material, it is particularly preferable to use a plurality of plate-shaped platinum platings from the viewpoint that there is no elution of a harmful substance to the living body, high electrolysis efficiency, high durability, and low cost. It should be noted that other shapes and materials may be used as long as they can supply current stably for a long period of time.

The cathode 22 is a conductive substance for electrolysis, and preferably has a plurality of or a single mesh, plate, or column. Also, platinum-plated titanium, platinum alone, or the like can be used as the material. As the conductive material of the cathode 22, it is particularly preferable to use a plurality of plate-shaped platinum platings because there is no elution of a harmful substance to the living body, high electrolysis efficiency, high durability, and low cost. . It should be noted that other shapes and materials may be used as long as they can supply current stably for a long period of time.

The anode chamber 23 includes an anode protection diaphragm 26 and a diaphragm 2.
5, the anode protection diaphragm 26 and the diaphragm 25
May be 0.1 mm or more, but by setting it to 0.3 mm or more and 2.0 mm or less, an arrangement is obtained in which the differential pressure between the entrance and the outlet and the ohmic loss during electrolysis are balanced. More preferably, it is in a range of 0.5 mm or more and 1.0 mm or less.

On the other hand, the cathode chamber 24 comprises the cathode 22 and the diaphragm 25.
Between the cathode 22 and the diaphragm 25.
May be 0.1 mm or more, but if it is 0.3 mm or more and 2.0 mm or less, the arrangement is such that the differential pressure between the entrance and the exit and the ohmic loss during electrolysis are balanced. More preferably, it is in a range of 0.5 mm or more and 1.0 mm or less.

The diaphragm 25 is provided for the purpose of separating and holding acidic water and alkaline water generated by electrolysis. The shape may be a sheet shape with a thickness of 0.01 mm or more, but by setting the thickness to 0.03 mm or more and 0.2 mm or less, an arrangement is achieved in which the strength of the diaphragm 25 and the ohmic loss during electrolysis are balanced. More preferably 0.05 mm or more.
It is within a range of 15 mm or less. In addition, as the type, a nonwoven fabric, a membrane filter, an ion exchange membrane, or the like can be preferably used. In particular, a membrane filter is preferable in terms of a balance between cost and separation performance. The material of the membrane filter is chlorinated polyethylene, PTFE, PV
Although DF and the like can be used, chlorinated polyethylene is particularly preferred from the viewpoint of the balance between cost and separation performance. The pore size of the membrane filter may be 0.01 μm or more, but by setting the pore size to 0.03 μm or more and 10 μm or less, the separation performance of the diaphragm 25 and the ohmic loss during electrolysis can be balanced. More preferably, it is in the range of 0.5 μm or more and 5 μm or less.

The anode protection diaphragm 26 comprises a carbon source 27 and the anode 2
1 is attached for the purpose of releasing generated gas into the treated water without releasing particles falling from the carbon source 27 into the treated water. The shape may be a sheet shape and a thickness of 0.1 mm or more,
When the thickness is not more than mm, the strength of the diaphragm 25 and the gas release performance can be balanced. More preferably, it is in a range of 0.5 mm or more and 1.0 mm or less. Also, as a type,
Preferably, a nonwoven fabric, a membrane filter, an ion-exchange membrane or the like can be used, and a nonwoven fabric is particularly preferred from the viewpoint of a balance between cost and separation performance. As the material of the nonwoven fabric, polyethylene, polypropylene and the like can be used, but polyethylene is particularly preferable in view of the balance between cost and separation performance.
Further, the pore size of the nonwoven fabric may be 5 μm or more,
By setting the diameter to m or more and 300 μm or less, the separation performance of the diaphragm 25, the retention performance of the dropped particles, and the gas emission performance can be balanced. More preferably, it is in the range of 50 μm or more and 200 μm or less.

The carbon source 27 is for the purpose of generating carbon dioxide by electrolysis. Preferably, activated carbon, carbon graphite or the like can be used. As the activated carbon, for example, a molded article of granular activated carbon, powdered activated carbon, activated carbon fiber, or the like can be used. In particular, granular activated carbon is preferable because its cost is relatively low.

The mineral component-containing material-filled layer 3 is for realizing the addition of a mineral component to the water to be treated. Preferably, the filler is a natural rock, a natural mineral-containing material, calcium carbonate, or the like, or a filler. Mixtures and the like can be used. As natural rocks, for example, coral fossils, igneous rocks, quartz porphyry, barley stone and the like can be used, and coral fossils are particularly preferable because of a relatively high content of minerals, especially calcium. As the natural mineral-containing substance, oyster shells and shells of other shells can be used. In particular, baked oyster shells are more preferable because they have a relatively high calcium content in minerals and low cost.

The residual chlorination layer 4 is for realizing the removal of residual chlorine generated by electrolysis in the acidic water as the water to be treated, and activated carbon or the like can be used as a filler.
As the activated carbon, for example, a granular activated carbon, a molded product of powdered activated carbon, activated carbon fiber, and the like can be used. In particular, the granular activated carbon is more preferable because the cost is relatively low.

The membrane filter 5 is for realizing the removal of fine suspended substances or bacteria as a final purification treatment of the water to be treated, and is preferably in the form of a hollow fiber, a flat membrane, or a pleat. In particular, a thread-wound shape, particularly a hollow-fiber shape, is preferable because it is compact.

The sensor 6 is for realizing the detection of the properties of the treated water, and is of a type such as a calcium sensor or a conductivity sensor. It is more preferable than that the detection is performed directly.

The control power supply unit 7 is for supplying a direct current to the electrolytic cell 2 and is composed of a transformer for exchanging domestic alternating current electricity with direct current electricity, a switch for selecting arbitrary electrolysis conditions, and the like. .

The reverse voltage control unit 8 applies a negative charge of the power supply to the anode 21 of the electrolytic cell 2 in a manner associated with the control power supply unit 7.
By applying a positive charge of the power source to 2, the scale of the calcium carbonate, calcium hydroxide, etc. of the cathode 22 is removed, and the cathode 22 is used under conditions that enable stable operation for a long period.

The water quality control unit 9 receives the detection result of the sensor 6, controls the electrolytic voltage or current for displaying the result and adjusting the concentration, and appropriately or arbitrarily elutes the mineral component into the water to be treated. Enable.

Next, the flow of water in the mineral water producing apparatus of the present invention configured as described above will be described with reference to FIG.

The water to be treated is water having a neutral pH, such as tap water, and the organic substance removal layer 1 removes organic substances in the water to be treated, particularly trihalomethane precursors typified by humic acid and the like by adsorption or the like. By doing so, the generation of organic halogen compounds such as trihalomethane generated by the reaction between residual chlorine generated by electrolysis and the trihalomethane precursor is reduced as much as possible.

In the electrolytic cell 2, water treated by the organic substance removing layer 1 is distributed to an anode chamber 23 and a cathode chamber 24, respectively.
The control power supply unit 7 supplies a direct current to the anode 21 and the cathode 22 of the electrolytic cell 2. In the anode chamber 23, anions are electrophoresed from the cathode chamber 24, and cations are electrophoresed in the cathode chamber 24. Is done. As a result, the treated water in the anode chamber 23 has an increased hydrogen ion concentration and becomes acidic. On the other hand, in the cathode chamber 24, a phenomenon opposite to that of the anode chamber 23 occurs,
The treated water in the cathode chamber 24 has a reduced hydrogen ion concentration and becomes alkaline. At this time, the diaphragm 25 moves to separate and hold the acidic water and the alkaline water generated by the electrolysis as much as possible.

Here, in the anode 21, the carbon source 27
Are in close contact with the anode 21 by the anode protection diaphragm 26,
During electrolysis, carbon dioxide gas is generated by oxygen gas, chlorine gas and carbon source 27. At this time, the anode protection diaphragm 26
The gas generated is released into the treated water without releasing particles falling from the carbon source 27 into the treated water.

The generated carbon dioxide gas is supplied to the mineral component-containing substance packed layer 3 together with the acidic water, and the mineral component is easily dissolved by the acidity of the water to be treated and the presence of the carbon dioxide gas. Dissolves quickly in water.

Further, the treated water of the mineral component-containing substance-filled layer 3 is guided to the residual chlorination layer 4 to remove the residual chlorine component contained therein.

Next, the treated water of the residual chlorinated layer 4 and the alkaline water of the electrolytic cell 2 are mixed, and fine suspended substances or bacteria are removed by the membrane filter 5 to obtain final treated water. . The properties of the final treated water are detected by the sensor 6, and if necessary, the electrolytic voltage or current is controlled to adjust the concentration, so that the mineral components can be properly dissolved or optionally dissolved in the water to be treated. to enable.

In addition, under conditions such as a constant integrated flow rate and a constant time, the reverse power control unit 8 applies a negative charge of the power supply to the anode 21 of the electrolytic cell 2 and a negative power supply to the cathode 22 in a form associated with the control power supply unit 7. By applying a positive charge, scale such as calcium carbonate and calcium hydroxide of the cathode 22 is removed, and stable operation can be performed for a long period of time.

[0044]

According to the first aspect of the present invention, even when a poorly soluble component is used as a mineral component-containing substance, the mineral component is quickly eluted into the water to be treated, and the mineral water is efficiently produced. Can be.

According to the second aspect of the present invention, the anode component of the electrolytic cell is provided with a carbon source and carbon dioxide gas is generated during electrolysis, so that the mineral component can be quickly eluted and the mineral component can be dissolved. Can be maintained in a dissolved state.

According to the third and fourth aspects of the present invention, it is possible to appropriately or arbitrarily elute mineral components into the water to be treated.

According to the fifth aspect of the invention, the scale of calcium carbonate, calcium hydroxide and the like on the cathode plate of the electrolytic cell is prevented, and stable operation can be performed for a long period of time.

According to the sixth aspect of the invention, residual chlorine and halogenated organic substances contained in acidic water can be removed, and odor can be removed and safety can be improved.

According to the seventh aspect of the present invention, residual chlorine and organic halides contained in acidic water can be removed with a more compact apparatus, thereby removing odors and improving safety.

According to the eighth and ninth aspects of the present invention, safer and more delicious water can be realized by removing impurities contained in the water to be treated as much as possible.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a mineral water producing apparatus according to the present invention.

FIG. 2 is a conceptual diagram of a conventional mineral water producing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Organic substance removal layer 2 Electrolysis tank 3 Mineral component containing substance filling layer 4 Residual chlorine treatment layer 5 Membrane filter 6 Sensor 7 Control power supply unit 8 Reverse power control unit 9 Water quality control unit 21 Anode 22 Cathode 23 Anode chamber 24 Cathode chamber 25 Separator membrane 26 Anode protection diaphragm 27 Carbon source 30 Raw material storage container 31 Mineral water producing agent

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location C02F 1/68 540 C02F 1/68 540E

Claims (9)

[Claims] 1. A method according to claim 1, wherein the water to be treated is separated into acidic water and alkaline water in an electrolytic cell having at least one pair of electrode plates, and the acidic water is brought into contact with a substance containing a mineral component such as calcium carbonate. Mineral water production equipment that is designed to merge with 2. The mineral water producing apparatus according to claim 1, wherein a carbon source is provided on an anode plate of said electrolytic cell, and carbon dioxide gas is generated during electrolysis. 3. The mineral water production apparatus according to claim 1, further comprising means for controlling an electrolysis voltage or current and setting arbitrary electrolysis conditions. 4. A method according to claim 1, further comprising a measuring mechanism for measuring the calcium concentration and hardness of the treated water, displaying the result, and providing information for controlling the electrolytic voltage or current for adjusting the concentration. 4. The mineral water production apparatus according to 2, 3 or 4. 5. The apparatus for producing mineral water according to claim 1, wherein said electrode plate of said electrolytic cell has reverse voltage means. 6. A residual chlorine removing means made of activated carbon or the like is provided in an acidic water outlet of the electrolytic cell, a downstream area in contact with a substance containing a mineral component, or a downstream area in which the acidic water and the alkaline water converge. The mineral water production apparatus according to 3, 4, or 5. 7. The mineral water producing apparatus according to claim 6, wherein the residual chlorine removing substance such as activated carbon is mixed with a mineral component-containing substance for use. 8. Pretreatment means for removing organic matter, residual chlorine, fine particles and bacteria from water to be treated before separation into acidic water and alkaline water. The mineral water production apparatus according to 6 or 7. 9. The method according to claim 1, further comprising a post-treatment means for removing fine particles and bacteria from the treated water separated into acidic water and alkaline water. Mineral water production equipment.