JPH06285467A - Water conditioning machine - Google Patents

Abstract

PURPOSE:To provide a water conditioning machine which produces ionic water having constant properties from any kind of raw water by installing a reverse osmosis membrane which can give pure water, a feeder which makes desirable water by conditioning, and an electrolytic cell which electolyzes the conditioned water. CONSTITUTION:A water conditioning machine 1 comprises an active carbon filter 2 which removes chlorinated lime and organic substances contained in raw water such as city water, a hollow fiber filter 3 which removes bacteria and fine particles, a reverse osmosis filter 4 which removes ions and dissolved gas, a feeder 5 which feeds a desired material into the obtained pure water for conditioning, and an electrolytic cell 8 in which the conditioned water is converted by electrolysis into alkaline ionic water on the cathode 6 side and into acid ionic water on the anode side. In the water conditioning machine, pure water is obtained from raw water by the reverse osmosis filter 4, desired conditioned water is produced by incorporating an optional material fed from the feeder 5 into the obtained pure water, and the conditioned water is electrolyzed by the electrolytic cell 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water regulating machine.

[0002]

2. Description of the Related Art Conventionally, a water purifier has produced ionized water by a process as shown in FIG. That is, the water purifier filters raw water such as tap water using an activated carbon filter 20 for removing chlorine and organic matter, and a hollow fiber filter 21 of about 0.1 μm for removing various bacteria and rust contained in water. To produce purified water, and the purified water is electrolyzed in an electrolytic bath 25 having an anode 22, a cathode 23, and a diaphragm 24 to cause an electrolysis reaction of water, so that the anode 22 has the following formula (1). H ^{2 +} ions generated at the same time as oxygen gas to generate acidic ionized water,
Similarly, cause hydrogen generating reaction shown as the following formula (2) at the cathode 23 side, was generated alkali ion water by OH ^{chromatography} ions generated simultaneously with the hydrogen gas.

[0003]

[Chemical 1]

These ionized waters are separated by the diaphragm 24 and can be independently taken out without being neutralized.

[0005]

However, the activated carbon filter in the conventional water conditioner as described above could hardly adsorb ions and dissolved gas contained in tap water. In addition, since the size of the ions or dissolved gas molecules is 0.01 μm or less,
It could hardly be removed with a hollow fiber filter of about m. Furthermore, since the components and amounts of ions and dissolved gases contained in tap water vary depending on the region, season, and sometimes the time, the components and amounts of ions and dissolved gases used in electrolysis water vary widely. Met. As a result, the conductivity of the purified water was not constant and affected the electrolysis conditions. Moreover, if the effects of specific components are listed, changes in the amount of calcium ion and magnesium ion in purified water are as follows:
It causes a change in the mineral concentration in ionized water, and dissolved carbon dioxide, carbonate ions, dissolved ammonia, nitrate ions,
Since it has a buffering effect on H ⁺ and OH ⁻ ions,
It affected the pH of ionized water. On the other hand, the change in the chlorine ion concentration affected not only the residual chlorine concentration contained in the ionized water but also the redox potential of the ionized water. As described above, it has been difficult to stably obtain ion water having desired characteristics such as pH, mineral concentration, and redox potential with the conventional water purifier.

The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a water conditioner capable of always obtaining ionized water having a certain characteristic even if any raw water is used. Has an aim.

[0007]

In order to achieve this object, a water purifier according to the present invention comprises a reverse osmosis membrane capable of passing through raw water such as tap water to obtain pure water, and a reverse osmosis membrane thereof. It is provided with an adding device for adding an arbitrary substance to the pure water obtained by the above to adjust it to a desired water, and an electrolytic cell for electrolyzing the water adjusted by the adding device.

Further, the reverse osmosis membrane has a function of dividing raw water into pure water and concentrated water, and further, the electrolytic layer electrolyzes water adjusted by the adding device on the cathode side, and May be electrolyzed on the anode side.

Alternatively, the reverse osmosis membrane has a function of dividing raw water into pure water and concentrated water, and further, the electrolytic layer electrolyzes water adjusted by the adding device on the anode side, and May be electrolyzed on the cathode side.

[0010]

In the water purifier of the present invention having the above-mentioned structure, pure water is obtained from raw water by using a reverse osmosis membrane, and then a desired water is added to the pure water by adding an arbitrary substance to the pure water. It is adjusted and the adjusted water is electrolyzed by the electrolyzer, so it is not affected by the ions and dissolved gas contained in the raw water.
The desired alkaline ionized water and acidic ionized water can be stably obtained.

Further, when only the alkaline ionized water needs to have a certain characteristic, the raw water is divided into pure water which has passed through the reverse osmosis membrane and the remaining concentrated water, and the pure water is charged with an arbitrary substance. By electrolyzing the added water on the cathode side and the concentrated water on the anode side of the electrolytic cell, a larger amount of desired alkaline ionized water can be stably obtained as compared with the above structure.

Similarly, in the case where only acidic ionized water needs to have a certain characteristic, the raw water is divided into pure water that has passed through the reverse osmosis membrane and the remaining concentrated water, and the pure water is mixed with any substance. It is possible to stably obtain a larger amount of the desired acidic ionized water by electrolyzing the water added with the water on the anode side of the electrolytic cell and the concentrated water on the cathode side.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

First, an outline of the configuration of a water leveling machine 1 according to the first embodiment of the present invention will be described with reference to FIG. This water purifier 1 is composed of an activated carbon filter 2 for removing chlorine and organic substances contained in raw water such as tap water, a 0.1 μm hollow fiber filter 3 for removing bacteria and fine particles, and ions and dissolved gas. Reverse osmosis filter 4 for removing impurities, and addition device 5 for adding and adjusting a desired substance to the obtained pure water
And an electrolyzer 8 for electrolyzing the adjusted water to generate alkaline ionized water on the cathode 6 side and acidic ionized water on the anode 7 side.
It consists of and. The electrolytic cell 8 is a two-chamber type electrolytic cell using a diaphragm 9 of polyester non-woven fabric, and both the cathode 6 and the anode 7 are formed by plating a titanium substrate with platinum.

As shown in FIG. 2, the reverse osmosis filter 4 has a reverse osmosis membrane 10 made of polyamide resin.
And a polypropylene non-woven fabric 11 for securing a water channel is overlapped and spirally wound. The opposite end surfaces of the nonwoven fabric 11 are covered with the reverse osmosis membrane 10 every other sheet, as shown in FIG.

Next, the process of obtaining pure water from tap water by the reverse osmosis filter 4 will be described with reference to FIG. First, when tap water is sent by applying pressure from one end face of the filter, the tap water is not covered by the non-woven fabric 11 on the end face.
It is introduced into the reverse osmosis filter 4 through the inside. And
A part of the introduced water passes through the reverse osmosis membrane 10 by pressure, becomes pure water, is guided to the inside of the nonwoven fabric 11 whose both ends are covered, and is further collected at the center of the spiral to be discharged from the pure water outlet 12. Taken out. On the other hand, the remaining water is concentrated and collected on the opposite end face and discharged from the concentrated water outlet 13. Here, the ratio of pure water and concentrated water obtained is 1:
It is about 1. In order to confirm the performance of the reverse osmosis filter 4, Table 1 shows the results of characteristics comparison between tap water and water obtained by treating tap water with the activated carbon filter 2, the hollow fiber filter 3 and the reverse osmosis membrane filter 4.

[0017]

[Table 1]

From the above table, it was confirmed that the desired pure water was obtained.

Next, using the water purifier 1 of this embodiment, an ion water production experiment was actually conducted using three types of tap water.
The experiment was conducted by paying attention to the amount of carbonic acid, hardness, residual chlorine and pH. The characteristics of the three types of tap water are shown in Table 2 below.

[0020]

[Table 2]

As experimental conditions, the electrolysis current was 1 A (ampere), the total flow rate was 2.0 L / min (liter / min), and the cathode 6 was used.
Side and anode 7 side were 0.5 L / min, and the waste water (concentrated water) was 1.0 L / min. Moreover, as an additive,
Calcium lactate was used for the cathode 6 side, calcium chloride was used for the anode 7 side, and each was adjusted to 1 mol / L (mol per liter) with pure water, and then 10 electrodes were applied to each electrode side using a metering pump.
^-3 mol / L was added.

Table 3 shows the characteristics of the alkaline ionized water obtained from the cathode 6 side and the acidic ionized water obtained from the anode 7 side by the experiment.

[0023]

[Table 3]

As is apparent from the table, the water purifier 1 of this embodiment can always obtain alkaline ionized water and acidic ionized water having a constant characteristic regardless of the characteristic of the raw water.

Next, the configuration of the second embodiment of the present invention will be described with reference to FIG. The water conditioner 14 is an activated carbon filter 2 for removing chlorine and organic matter contained in tap water.
A hollow fiber filter 3 of 0.1 μm for removing bacteria and fine particles, a reverse osmosis filter 4 for removing ions and dissolved gas, and an addition device for adjusting a desired substance by adding a desired substance to the obtained pure water. 5 and an electrolytic cell 8 for electrolyzing the adjusted water on the cathode 6 side to generate alkaline ionized water, and for electrolyzing concentrated water produced simultaneously with pure water on the anode 7 side to generate acidic ionized water. It consists of In addition, except for the flow path from the reverse osmosis filter 4 to the electrolytic cell 8, the same one as in the first embodiment was used.

Using the water conditioner 14 of this embodiment, an ion water production experiment was actually conducted using three types of tap water. Here, the experiment was conducted paying attention to the amount of carbonic acid, hardness, residual chlorine, and pH. The characteristics of the three types of tap water are the same as those shown in Table 2 used in the experiment of the first embodiment described above.

As experimental conditions, the electrolysis current was 1 A, the total flow rate was 2.0 L / min, and both the cathode 6 side and the anode 7 side were 1.0 L.
/ Min. In addition, calcium lactate was used as an additive, and after adjusting to 1 mol / L with pure water, it was added to the negative 6-electrode side so as to be 10 ⁻³ mol / L using a metering pump.
Table 4 shows the characteristics of the alkaline ionized water obtained from the cathode 6 side and the acidic ionized water obtained from the anode 7 side by this experiment.

[0028]

[Table 4]

As is clear from the table, the water conditioner 14 of this embodiment can always obtain alkaline ionized water having a constant characteristic regardless of the characteristic of the raw water. In addition, the amount of water obtained is about twice as large as that in Example 1, so this is an effective means when only alkaline ionized water is required.

Next, a third embodiment of the present invention will be described with reference to FIG. The water conditioner 15 includes an activated carbon filter 2 for removing chlorine and organic substances contained in tap water, a 0.1 μm hollow fiber filter 3 for removing bacteria and fine particles, and a reverse filter for removing ions and dissolved gas. The permeation filter 4, an addition device 5 for adding and adjusting a desired substance to the obtained pure water, and the adjusted water is electrolyzed on the anode 7 side to generate acidic ionized water, which is generated at the same time as pure water. The electrolyzer 8 for electrolyzing the concentrated water to generate alkaline ionized water on the side of the cathode 6 is the inversion of the polarity of the electrolyzer 8 shown in the second embodiment.

Using the water conditioner 15 of this embodiment, an ion water production experiment was actually conducted using three types of tap water. The experiment was conducted by paying attention to the amount of carbonic acid, hardness, residual chlorine and pH.
Further, the characteristics of the three types of tap water are the same as those shown in Table 2 used in the above-mentioned first and second examples.

As experimental conditions, the electrolysis current was 1 A, the total flow rate was 2.0 L / min, and both the cathode 6 side and the anode 7 side were 1.0 L.
/ Min. Further, calcium chloride was used as an additive, and after adjusting to 1 mol / L with pure water, it was added to the anode 7 side so as to be 10 ⁻³ mol / L using a metering pump. Table 5 shows the characteristics of acidic ionized water obtained from the anode 7 side and alkaline ionized water obtained from the cathode 6 side by this experiment.

[0033]

[Table 5]

As is clear from the table, the water purifier 15 of this embodiment can always obtain acidic ionized water having a constant characteristic regardless of the characteristic of the raw water. In addition, the amount of water obtained is about twice as large as that in Example 1, so that it is an effective means when only acidic ionized water is required.

[0035]

As is clear from the above description, the water purifier of the present invention stabilizes desired alkaline ionized water and acidic ionized water without being affected by ions or dissolved gas contained in raw water. Can be obtained.

When only alkaline water is required, a larger amount of the desired alkaline water can be obtained by electrolyzing water prepared by adding an arbitrary substance to pure water on the cathode side of the electrolytic cell and electrolyzing concentrated water on the anode side. Can be stably obtained.

Similarly, when only acidic ionized water is required, a larger amount of water can be obtained by electrolyzing water prepared by adding an arbitrary substance to pure water on the anode side of the electrolytic cell and concentrated water on the cathode side. The desired acidic ionized water can be stably obtained.

[Brief description of drawings]

FIG. 1 is a diagram showing a first embodiment embodying the configuration of a water purifier according to the present invention.

FIG. 2 is a diagram showing a structure of a reverse osmosis filter mounted on the water purifier of the present invention.

FIG. 3 is a cross-sectional view of a main part of the reverse osmosis filter shown in FIG.

FIG. 4 is a diagram showing the configuration of a second embodiment of the water purifier of the present invention.

FIG. 5 is a diagram showing a configuration of a third embodiment of a water purifier according to the present invention.

FIG. 6 is a diagram showing a configuration of a conventional water conditioning machine.

[Explanation of Codes] 4 Reverse Osmosis Filter 5 Addition Device 6 Cathode 7 Anode 8 Electrolyzer 9 Septum 10 Reverse Osmosis Membrane

Claims (3)

[Claims] 1. A reverse osmosis membrane capable of obtaining pure water by passing raw water such as tap water, and an arbitrary substance is added to pure water obtained by the reverse osmosis membrane to obtain a desired water. A water purifier comprising an adding device for adjusting and an electrolytic cell for electrolyzing water adjusted by the adding device. 2. The reverse osmosis membrane has a function of dividing raw water into pure water and concentrated water, and further, the electrolytic layer electrolyzes water adjusted by the adding device on the cathode side, and the concentrated water The water purifier according to claim 1, wherein the water is electrolyzed on the anode side. 3. The reverse osmosis membrane has a function of dividing raw water into pure water and concentrated water, and further, the electrolytic layer electrolyzes water adjusted by the addition device on the anode side, and the concentrated water The water purifier according to claim 1, wherein the water is electrolyzed on the cathode side.