JP2003300076A - Water treatment method and apparatus for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To treat the impurity substances existing as minute solid components and dissolved components in water by a simple construction without being affected by water temperature and electrical conductivity. <P>SOLUTION: A separation water tank 10 into which raw water 9 is admitted and a concentration tank 14 are connected by a flow passage pipe 13. An electrode and magnet which impress an electric field 11 and magnetic field 12 respectively perpendicularly to the flow of the raw water 9 containing the impurity substances 8 in the tank 10 are arranged in the pipe 13. As a result, the electric field 11 and the magnetic field 12 are applied perpendicularly into the raw water 9 and Lorentz force is generated in the direction perpendicular thereto, by which the impurity substances 8, such as ions and charged particles, are migrated in the direction and the impurity substances 8 can thus be removed. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water treatment method and apparatus for treating impurities present in water as fine solid components and dissolved components.

[0002]

2. Description of the Related Art If tap water is used as an example of impurities contained in water, so-called mineral components such as calcium and magnesium contained in tap water are dissolved components.
Iron rust generated from iron piping is a small solid component.

An ion exchange method is generally widely used as a method for removing dissolved components contained in water.
This is because raw water is passed through a reaction tower filled with an ion exchange resin in which a cation or anionic ion exchange group is added to the resin, and the dissolved cation or anion component contained in the raw water is added to the ion exchange group of the ion exchange resin. It is intended to separate impure dissolved components from raw water by exchanging them with harmless ions captured in.

Next, filtration is widely adopted as a method for removing minute solids in water. In this method, raw water is passed through a filter provided with a filter medium having a fine pore size, and solids are separated on the surface of the filtration.

[0005]

However, the ion exchange method has a fundamental problem that the used ion exchange resin becomes a large amount of secondary waste. Also,
Since the bond between the ion exchange group of the ion exchange resin and the resin substrate is weak, both are decomposed by some heating, and the decomposition products are eluted as further impurities. In addition, since the ion exchange resin is basically a composite structure of various organic substances, it is an unavoidable problem that the treated water contains a trace amount of organic impurities.

Further, in the solid content removing method, the material of the filtering material can be roughly classified into a high molecular weight organic material and a ceramic sintered body, and the basic problem with the high molecular weight organic material is that the organic material is decomposed or deformed by some heating, and However, in the sintered ceramic material, since holes that impair stability are provided in the base material structure, there is an unavoidable problem in which elution of constituents from the unstable portion is unavoidable.

The present invention has been made to solve the above problems, and provides a water treatment method and an apparatus therefor capable of removing impurities in water which are not affected by water temperature and electric conductivity with a simple structure. is there.

[0008]

The invention according to claim 1 is
An electric field and a magnetic field are applied at a right angle to raw water containing ions or charged particles, and a Lorentz force is generated in a direction perpendicular to the electric field, whereby the ions or charged particles are moved in the Lorentz force direction.

According to the first aspect of the present invention, by applying an electric field and a magnetic field at a right angle in water, the charged particle bodies can be moved in the Lorentz force direction, and the impurity charged particle bodies can be removed by the action of the electromagnetic field. This makes it possible to prevent the generation of secondary waste without the need for chemical adsorbents or physical filtration.

According to the second aspect of the present invention, raw water containing ions or charged particles is placed in a separation water tank, an electromagnetic force acting portion is attached to the separation water tank, and an electric field and a magnetic field are vertically applied at the electromagnetic force acting portion. It is characterized in that the ions or charged particles are electrophoresed and separated by the generated electromagnetic force.

According to the second aspect of the present invention, there is no need to limit the use conditions such as the temperature as found in the conventional water treatment technology, generate secondary waste, and constantly add chemicals. . Further, since the action of electromagnetic force does not necessarily have to come into contact with raw water, it is possible to establish a non-contact water treatment technology that has never been seen in the prior art.

That is, when the portion to which the electric field and the magnetic field are applied is placed in non-contact with the raw water, an electrophoretic separation effect can be obtained.
It is possible to prevent the elution of impurities from the body to which an electric field or a magnetic field is applied. Further, even when the raw water is pure water or has an electric conductivity equivalent to that of pure water, the electrophoretic separation effect provided by the electric field and the magnetic field is not impaired. Furthermore, even when the raw water is at a high temperature, the electrophoretic separation effect works without problems,
Water can be treated with a simple mechanism without being affected by water temperature.

In the invention according to claim 3, a separation water tank into which raw water flows, a concentration tank connected to the separation water tank in a horizontal direction with respect to the flow of the raw water, and the raw water arranged in the separation water tank. It is characterized in that it is provided with an electrode and a magnet for applying an electric field and a magnetic field vertically to the flow, respectively.

According to the third aspect of the present invention, the electric field and the magnetic field generate an electromagnetic force in a direction perpendicular to the electric field and the magnetic field, and the charged dissolved components and minute solids contained in the raw water follow the electromagnetic force. Impurities in the raw water are separated into the concentration tank because they migrate to the subsequent concentration tank after passing through the intersection of the electric and magnetic fields.

According to a fourth aspect of the present invention, a separation water tank for inflowing raw water, a pair of left and right flow pipes connected to the separation water tank in the left-right direction with respect to the flow of the raw water, and a pair of left and right flow passages. A pair of left and right concentrating tanks connected to the pipe, and electrodes and magnets respectively provided in the pair of left and right flow pipes for vertically applying an electric field and a magnetic field to the flow of the raw water, respectively. Is characterized by.

According to the fourth aspect of the present invention, an electromagnetic force generated by an electric field and a magnetic field applied in a direction perpendicular to the left and right flow passages causes the electromagnetic force generated in the raw water to carry a charged dissolved component and fine solids. Impurities can be separated from the raw water by migrating the fractions from the flow channel to the left concentration tank or the right concentration tank.

The invention according to claim 5 is characterized in that a second electrode is arranged in each of the concentration tanks so that an electric field can be applied between the pair of left and right concentration tanks. According to the invention of claim 5, the electromagnetic force generated by the electric field and the magnetic field applied in the vertical direction to the pair of left and right flow paths causes the charged dissolved component and the minute solid content contained in the raw water to form a pair of left and right. Impurities can be separated from raw water by applying migration from an electric field generated by applying a voltage from the flow path tube to the electrodes provided in the left concentration tank and the right concentration tank.

In the invention according to claim 6, a separation water tank for inflowing raw water, a pair of left and right flow pipes connected to the separation water tank in the left-right direction with respect to the flow of the raw water, and a pair of left and right flow passages. A left concentrating tank and a right concentrating tank, each connected to a pipe, and electrodes arranged in the left concentrating tank and the right concentrating tank so that an electric field can be applied between the left concentrating tank and the right concentrating tank. Is characterized by.

According to the sixth aspect of the present invention, the raw water contains an electric force generated by an electric field applied with a voltage to the electrodes of the left concentrating tank and the right concentrating tank with respect to the flow path pipes connected to the left and right of the separation water tank. Impurities can be separated from the raw water by migrating the charged dissolved components and minute solids from the flow channel to the left side concentration tank or the right side concentration tank.

The invention according to claim 7 is characterized in that the materials of the separation water tank and the concentration tank are non-electrically conductive materials. According to the invention of claim 7, the separation tank and the concentration tank are made of non-electrical conductors, so that the electric field loss that can occur in the separation tank or the concentration tank can be reduced.

The invention according to claim 8 is characterized in that the materials of the separation water tank and the concentration tank are non-magnetic materials. According to the invention of claim 8, magnetic field loss can be reduced by making the separation tank and the concentration tank nonmagnetic.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of a water treatment method according to the present invention will be described with reference to FIGS. Figure 1
1A is a schematic diagram for explaining the configuration of the present embodiment, FIG. 1B is an enlarged view of part A of FIG. 1A, and FIG.
FIG. 4 is a schematic diagram for explaining the operation of the present embodiment.

In FIG. 1A, reference numeral 1 is a pipe, and this pipe 1
Is shown as an example of the separation water tank, and only the main part is shown. An inner pipe 2 is concentrically inserted into the pipe 1 as a partition, and an annular space 3 is formed between the inner surface of the pipe 1 and the outer surface of the inner pipe 2. An anode 4 and a cathode 5 are arranged in pairs in the inner tube 2 so as to face each other, and a magnet 6 is arranged below each of the anode 4 and the cathode 5 as shown in FIG. 1B.

Here, as shown in FIG. 1 (a), raw water is made to flow in the inner tube 2, a voltage is applied to the anode 4 and the cathode 5 in the raw water to give an electric field in a right angle direction, and a magnetic field is generated by the magnet 6. When applied in the perpendicular direction, a Lorentz force (electromagnetic force: F) is generated in the perpendicular direction as shown in FIG. 1 (c). F = eE + evB Here, e: electric charge of particles, E: electric field, v: moving speed of particles, B: magnetic flux density.

Due to this Lorentz force F, the charged particle bodies 7 as impurities move to the force F. The charged charged particles in the water move from the holes formed in the inner tube 2 to the annular space 3 as shown in FIGS. 1 (a) and 1 (b), and are concentrated and discharged as concentrated water. Purified treated water flows out of the system from the inner pipe 2. In this way, the charged particles 7 having impurities can be removed by the action of the electromagnetic field. According to the present embodiment, it is possible to remove the charged particle bodies of impurities by the action of the electromagnetic field without using a chemical adsorbent or physical filtration.

Next, a first embodiment of the water treatment device according to the present invention will be described with reference to FIG. The water treatment device according to the present embodiment is connected to a separation water tank 10 arranged so that an electric field 11 and a magnetic field 12 can be applied vertically to the flow of raw water 9 containing impurities 8, respectively. It is composed of a flow path pipe 13 passing through the intersection of the electric field 11 and the magnetic field 12, and a concentrating tank 14 connected to the flow path pipe 13. The separation water tank 10 and the concentration tank 14 are made of non-electrically conductive material or non-magnetic material.

In the water treatment device according to this embodiment,
When an electric field 11 and a magnetic field 12 are applied, an electromagnetic force in a direction perpendicular to the electric field 11 and the magnetic field 12 is generated at the intersecting surface, and the charged dissolved components contained in the raw water 9 and the impurities 8 such as minute solids are removed from the passage tube.
Electrophoretic force through 13 passes through the intersection of the electric field and the magnetic field and migrates to the concentration tank 14. Therefore, the impurities 8 in the raw water 9 are separated and concentrated in the concentration tank 14, and the concentrated water 15
Then, the treated water 16 that has been discharged from the concentration tank 14 and has been purified flows out from the separation water tank 10. Therefore, it is possible to remove minute solids and dissolved components in water without using a chemical adsorbent or a physical filtration device. Further, since the separation water tank 10 and the concentration tank 14 are composed of a non-electrical conductor or a non-magnetic material, an electric field that can occur in the separation water tank 10 and the concentration tank 14,
The magnetic field loss can be reduced.

Next, a concrete example of the above embodiment will be described. First, a partition plate is arranged in a rectangular acrylic container, and an electric field and a magnetic field are vertically arranged in the space between the partition plate and the acrylic container wall surface. As shown in FIG. And An insoluble electrode was used for the anode, a SUS electrode was used for the cathode, and a ferrite magnet was used for the body to which the magnetic field 12 was applied.

The eluate of a reddish brown cation exchange resin simulating the impurities 8 in the raw water 9 was added to pure water, and the pure water 9 was uniformly added to the separation water tank 10 and the concentration tank 14.
The cation-exchange resin eluate used as the impurity 8 is in a form in which an ion-exchange group is bonded to the resin decomposition product, and has properties of both a dissolved component and a minute solid content.

In this embodiment, in order to investigate the behavior of the impurities 8 in the raw water 9, the total organic carbon (TOC) concentration and the electric conductivity in the separated water tank 10 and the enrichment tank 14 water were examined over time. . The solid content property of the impurity 8 is examined by the TOC concentration, and the dissolution property of the impurity 8 is examined by the electric conductivity. The behavior was also confirmed by visual observation. The test conditions were such that the total liquid volume was 1 L, and the liquid volume ratio was separation tank 0.66: concentration tank 0.3.
4. The separation water tank 10 was circulated by a pump, the concentration tank 14 was left stationary, the applied voltage was 50 V, and the water temperature was 15 ° C.

TOC of separation water tank 10 and concentration tank 14 before the test
The concentration was 7.8 ppm, and the electric conductivity was 465 μS / cm. When the test was started by applying an electric field and a magnetic field to this, the TOC concentration of the separation water tank 10 decreased to 5.1 ppm and the electric conductivity decreased to 270 μS / cm after 330 minutes from the start of the test, and conversely the TOC concentration of the concentration tank 14 decreased. 1
0.4ppm, electric conductivity increased to 741μS / cm. Further, visually, the difference in color between the separation water tank 10 and the concentrating tank 14 was confirmed. As is clear from this test result, according to the present embodiment, it was confirmed that the impurities 8 in the raw water 9 can be separated from the raw water 9.

Next, a second embodiment of the water treatment method according to the present invention will be described with reference to FIG. Note that FIG.
FIG. 3A is a schematic view showing a separation water tank 10 in a perspective and perspective view for explaining an embodiment of a water treatment method, and FIG.
2, those parts that are the same as those corresponding parts in FIG. 2 are designated by the same reference numerals, and a description of the overlapping parts will be omitted.

In FIG. 3 (a), a flow pipe 13 is connected in a direction perpendicular to the side surface of the separation water tank 10, and raw water 9 containing ions or charged particles as impurities 8 is contained in the separation water tank 10 as shown in FIG. And the impurities 8 of the ions or charged particles are separated from the electromagnetic force acting part 17 by the electromagnetic force 18 of the electrode and magnet (not shown) attached to the flow path tube 13. At the electromagnetic force acting portion 17, the electromagnetic force 18 generated by vertically applying an electric field and a magnetic field causes the impurities 8 of ions or charged particles to migrate.

According to this embodiment, it is not necessary to limit the conventional use conditions such as temperature, generate secondary waste, and constantly add chemicals. Further, since the action of electromagnetic force does not necessarily have to come into contact with raw water, it is possible to provide a non-contact water treatment technology that has not been found in the prior art.

Next, a second embodiment of the water treatment apparatus to which the water treatment method according to the second embodiment is applied will be described with reference to FIG. 3 (b). As shown in FIG. 3B, the water treatment apparatus according to the present embodiment has a separation water tank 10 and a flow path that is connected to the separation water tank 10 in a horizontal direction with respect to a flow of raw water 9 containing impurities 8. A tube 13, an electrode and a magnet provided in the flow path tube 13 so that an electric field 11 and a magnetic field 12 can be applied vertically respectively, and a left-side concentrator installed from the separation water tank 10 through the flow path tube 13. It is composed of a tank 19 and a right-side concentration tank 20.

Here, the electromagnetic force generated by the electric field 11 and the magnetic field 12 vertically applied to the pair of flow path pipes 13 installed on the left and right of the separation water tank 10 is charged with the electric charge contained in the raw water 9. Flow path pipe for impurities 8 of dissolved components and minute solids
In order to migrate from 13 to the left side concentration tank 19 or the right side concentration tank 20, the impurities 8 contained in the raw water 9 of the separation water tank 10 are separated into the left side concentration tank 19 or the right side concentration tank 20. The concentrated water 21 in which the impurities 8 are concentrated is discharged from each of the concentration tanks 19 and 20, and the purified treated water 16 flows out from the separation water tank 10.

Based on the above-described embodiment, spacers having channels on the left and right sides are installed in a rectangular water tank to form a separation water tank 10, a left-side concentration tank 19 and a right-side concentration tank 20. An electric field and a device for applying a magnetic field to the bottom direction were installed in this separation water tank, and when this separation water tank 10 was filled with 500 ml of 25 ppm sodium chloride solution and a current of 0.2 A was applied, the chloride ion concentration in the separation water tank 10 after 120 min treatment Decrease by about 12%, pH
Increased by about 0.7. From this result, it is proved that the present embodiment is effective as a water treatment device.

Next, a third embodiment of the water treatment apparatus according to the present invention will be described with reference to FIG. In addition, in FIG.
The same parts as those in (b) are designated by the same reference numerals. As shown in FIG. 4, the water treatment device according to the present embodiment has a separation water tank.
An electric field 10 is connected to the separation water tank 10 in the left-right direction with respect to the flow of the raw water 9, and an electric field 11 and a magnetic field 12 can be vertically applied to the flow path tubes 13. And a magnetic field applying device (not shown) is installed. A left-side concentrating tank 19 and a right-side concentrating tank 20 are connected to each of the flow path pipes 13, and inside the respective concentrating tanks 19 and 20 so that an electric field can be applied between the left-side concentrating tank 19 and the right-side concentrating tank 19. electrode
22 are arranged.

Here, an electric field 11 and a magnetic field 12 applied in a vertical direction to the flow path pipes 13 connected to the left and right of the separation water tank 10.
The electromagnetic force generated by this causes the charged dissolved components and minute solids contained in the raw water 9 to migrate from the flow path to the left concentrating tank 19 or the right concentrating tank 20. At the same time, since migration is applied between the left-side concentration chamber tank 19 and the right-side concentration tank 20 by an electric field generated by applying a voltage to the electrode 22, the impurities 8 contained in the raw water 9 in the separation water tank 10 are concentrated on the left side. It is separated into tank 19 or right-side concentration tank 20 and discharged as concentrated water 21,
The purified treated water 16 flows out of the separation water tank 10.

Based on the above-mentioned embodiment, spacers having flow pipes 13 are installed on the left and right sides in a rectangular water tank to form three compartments, and each compartment is divided into a separation water tank 10, a left-side concentration tank 19 and a right-side concentration tank. 20, an electric field was applied to the lateral portion of the flow channel tube 13, and a magnetic field was applied to the bottom portion thereof, and at the same time, electrodes 22 were installed in the left concentrating tank 19 and the right concentrating tank 20, respectively.

The separated water tank 10 was filled with 500 ml of a 25 ppm sodium chloride solution, a current of 0.2 A was applied to apply an electric field to the flow channel tube 13, and an electric field was applied between the left concentrating tank 19 and the right concentrating tank 20. A voltage of about 60 V was applied between the electrodes 22 and 22. After 120 minutes of treatment, the chloride ion concentration in the separated water tank 10 decreased by about 16%, and the pH increased by about 2.4. From this result, it was proved that the present embodiment is effective as a water treatment device.

Next, a fourth embodiment of the water treatment apparatus according to the present invention will be described with reference to FIG. The difference of this embodiment from the third embodiment is that the electric field 11 and the magnetic field 12 in the flow channel tube 13 are deleted. That is, the water treatment device according to the present embodiment, as shown in FIG.
A pair of left and right flow pipes 13 connected to the separation water tank 10 in the left-right direction with respect to the flow of the raw water 9, a left-side concentration tank 19 and a right-side concentration tank 20 connected to the pair of left and right flow pipes 13, and the left side. An electrode 22 is arranged in each of the concentration tanks 19 and 20 so that an electric field can be applied between the concentration tank 19 and the right concentration tank 20.

Here, the electric force generated by the electric field applied between the left concentrating tank 19 and the right concentrating tank 20 with respect to the flow path pipes 13 connected to the left and right of the separation water tank 10 is the charge contained in the raw water 9. Impurities 8 contained in the raw water 9 of the separation water tank 10 are left-side concentrating tanks in order to migrate the charged components and fine solids from the flow path pipe 13 to the left-side concentrating tank 19 or the right-side concentrating tank 20.
19 or the right-side concentration tank 20 is separated.

As a concrete example based on this embodiment, spacers having flow paths on the left and right sides are installed in a single rectangular water tank, and a separation water tank 10, a left concentration tank 19 and a right concentration tank 20 are provided.
And the electrodes 22 in the left concentration tank 19 and the right concentration tank 20.
A water treatment device was configured by arranging the above to provide an electric field applying device for applying an electric field.

Then, 50 is added to the separation water tank 10 of the water treatment device.
Filling 0 ml of 25 ppm sodium chloride solution and applying a voltage of about 100 V between the left concentrator 19 and the right concentrator 20, 120
The chlorine ion concentration in the separated water tank 10 is about 4 after the minute treatment.
% And the pH increased by about 0.4. From this result, it was proved that the present embodiment is effective as a water treatment device.

[0046]

EFFECTS OF THE INVENTION According to the present invention, impurities existing in water as minute solid components or dissolved components can be separated by a simple mechanism. Further, it is not necessary to use a chemical adsorbent or a physical filtration device, and the amount of secondary waste generated can be reduced.

[Brief description of drawings]

1A is a perspective view partially showing an apparatus for explaining a first embodiment of a water treatment method according to the present invention, FIG.
(B) is an enlarged view of the “A” part in (a), and (c) is a schematic diagram for explaining the separating action of impurities.

FIG. 2 is a schematic configuration diagram for explaining a first embodiment of a water treatment device according to the present invention.

3A is a schematic diagram for explaining a second embodiment of a water treatment method according to the present invention, and FIG. 3B is a schematic view for explaining a second embodiment of a water treatment apparatus according to the present invention. FIG.

FIG. 4 is a schematic configuration diagram for explaining a third embodiment of a water treatment device according to the present invention.

FIG. 5 is a schematic configuration diagram for explaining a fourth embodiment of a water treatment device according to the present invention.

[Explanation of symbols]

1 ... Piping (separation water tank), 2 ... Partition (inner tube), 3 ... Annular space, 4 ... Anode, 5 ... Cathode, 6 ... Magnet, 7 ... Charged particle body, 8 ... Impurity, 9 ... Raw water, 10 ... Separation water tank, 11 ... Electric field, 12 ... Magnetic field, 13 ... Flow tube, 14 ... Concentration tank, 15 ... Concentrated water,
16 ... Treated water, 17 ... Electromagnetic force acting part, 18 ... Electromagnetic force, 19 ... Left concentrating tank, 20 ... Right concentrating tank, 21 ... Concentrated water, 22 ... Electrode.

Continued front page    (72) Inventor Shuji Seki             2-1, Ukishima-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa             Ceremony Company Toshiba Hamakawasaki Factory F term (reference) 4D054 FA08 FB18 FB20                 4D061 DA01 DB15 DB18 DC06 EA10                       EA18 EB01 EB28 EB37 EC01                       EC05 EC19 GA30

Claims (8)

[Claims] 1. An electric field and a magnetic field are applied at a right angle to raw water containing ions or charged particles, and a Lorentz force is generated in the right direction, whereby the ions or charged particles are moved in the Lorentz force direction. And water treatment method. 2. Raw water containing ions or charged particles is put in a separation water tank, an electromagnetic force acting portion is attached to the separation water tank, and an electromagnetic force generated by vertically applying an electric field and a magnetic field at the electromagnetic force acting portion is used. A water treatment method characterized in that the ions or charged particles are electrophoresed and separated. 3. A separation water tank into which raw water flows, a concentration tank connected to the separation water tank in a horizontal direction with respect to the flow of the raw water, and a separation tank arranged in the separation water tank in a horizontal direction with respect to the flow of the raw water. A water treatment device comprising: an electrode and a magnet for vertically applying an electric field and a magnetic field to each other. 4. A separation water tank into which raw water flows, a pair of left and right flow pipes connected to the separation water tank in the left-right direction with respect to the flow of the raw water, and left and right connected to the pair of left and right flow pipes. Water treatment characterized by comprising a pair of concentrating tanks, and electrodes and magnets which are respectively provided in the pair of left and right flow passage tubes and which vertically apply an electric field and a magnetic field to the flow of the raw water, respectively. apparatus. 5. The water treatment apparatus according to claim 4, wherein a second electrode is arranged in each of the concentrating tanks so that an electric field can be applied between the pair of left and right concentrating tanks. 6. A separation water tank for inflowing raw water, a pair of left and right flow pipes connected to the separation water tank in the left-right direction with respect to the flow of the raw water, and a pair of left and right flow pipes respectively connected to the separation water tank. A water treatment characterized by comprising a left-side concentration tank and a right-side concentration tank, and electrodes arranged in the left-side concentration tank and the right-side concentration tank so that an electric field can be applied between the left-side concentration tank and the right-side concentration tank. apparatus. 7. The material of the separation water tank and the concentration tank is a non-electrically conductive material.
7. The water treatment device according to item 6. 8. The water treatment device according to claim 3, 4 or 6, wherein the material of the separation water tank and the material of the concentration tank are non-magnetic materials.