KR20150063306A - Bipolar electrondes and seawater disalination apparatus and method using same - Google Patents

Bipolar electrondes and seawater disalination apparatus and method using same Download PDF

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KR20150063306A
KR20150063306A KR1020140169477A KR20140169477A KR20150063306A KR 20150063306 A KR20150063306 A KR 20150063306A KR 1020140169477 A KR1020140169477 A KR 1020140169477A KR 20140169477 A KR20140169477 A KR 20140169477A KR 20150063306 A KR20150063306 A KR 20150063306A
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South Korea
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pair
influent water
electrode
electrodes
porous base
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Korean (ko)
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김한기
정남조
김동국
곽성조
남주연
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한국에너지기술연구원
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
    • C02F1/481—Treatment of water, waste water, or sewage with magnetic or electric fields using permanent magnets

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

Disclosed are a bipolar electrode, an apparatus and a method for desalinating seawater using the same. The apparatus: generates oxidation and reduction reaction between the bipolar electrode and influent water by inducing a pair of electrodes to the bipolar electrode with induced currents generated by change of a magnetic field; and sterilizes pollutants in seawater by oxidation and reduction reaction between the bipolar electrode and the influent water. More specifically, oxidation and reduction reaction between the bipolar electrode and the influent water is executed by a pair of the electrodes of the bipolar electrode which are induced by induced currents generated by change of a magnetic field resulted from rotation of a magnet. Pollutants included in the influent water are adsorbed and the influent water is sterilized by an oxidizer by the oxidation and reduction reaction between the bipolar electrode and the influent water. Therefore, loss of induced currents, caused by bypass currents between a pair of the electrodes and a bipolar electrode in the prior apparatus, can be prevented; increase of the temperature of the inside of a reactor caused by bypass currents can be fundamentally prevented; and stability of a seawater desalination system can be more increased by preventing the increase of the temperature of the inside of a reactor.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seawater desalination apparatus and a seawater desalination apparatus using the seawater desalination apparatus,

The present invention relates to a biplane electrode and an apparatus and method for desalination of seawater using the same. More specifically, a pair of electrodes are induced in a biplane electrode by an induced current between a pair of polarities generated by a magnetic field, The present invention relates to an apparatus and method for sterilizing contaminants in seawater through oxidation and reduction reactions of a biocide electrode and an influent water.

Conventional seawater concentration and seawater desalination system is a method of producing highly concentrated brine by minimizing energy consumption. It consists of three steps: pre-treatment of seawater, concentration of low-concentration seawater by concentration of seawater, and concentration of high concentration of seawater.

That is, in order to desalinate seawater, a pretreatment for the removal of impurities and organic matter of brine and fresh water is firstly performed, and FCDi is executed to produce a first low-concentration brine. At this time, FDFO, which can obtain fertilizer, is arranged in parallel with FCDi to produce fertilizer as a result of desalination.

The low-concentration brine produced by the FCDi process again produces highly concentrated brine through MD and HP, and the highly concentrated brine is recovered as a useful resource through Cr. Such a seawater concentration and seawater desalination system can be obtained as a byproduct, in addition to fresh water, fertilizer (fertilizer mixed with water in a dropping irrigation system) material and salt.

However, since a large amount of energy is consumed for high pressure and heating in the continuous seawater desalination process, a method of lowering the production cost by increasing the energy efficiency (kWh / m 3 ) is being studied.

In order to maximize energy efficiency, many bipolar electrodes are used in the seawater desalination process. The seawater desalination process using the plurality of bipolar electrodes has an advantage in that a specific pollutant can be selectively treated according to operating conditions such as voltage.

That is, the plurality of bipolar electrodes absorb the microorganisms contained in the seawater during the energization and generate an oxidizing agent to sterilize the specific pollutants.

The seawater desalination process using the bipolar electrode has a merit that the current density is lower than that of the conventional electrochemical water treatment and thus the energy consumption is low and the surface area of the electrode per unit area can be easily increased. However, since the bypass formed between the pair of electrodes and the bi- The current loss due to the bypass current causes the internal temperature of the reactor to rise, and the stability of the seawater desalination system is caused by the increase of the internal temperature of the reactor.

It is an object of the present invention which is devised to solve the problems described above to prevent the current loss due to the bypass current generated between the pair of electrodes and the anode electrode, thereby reducing the internal temperature of the reactor, And a seawater desalination apparatus and method using the same.

In order to achieve the above object, the bi-polar electrode of the present invention is provided inside the reactor, and the bi-polar electrode is formed by inducing an induced current between a pair of polarities of the magnet due to the variation of the magnetic field due to the rotation of the magnet, A pair of polarities is induced according to the electric current to perform the oxidation and reduction reaction with the influent water, the pollutant of the influent water is absorbed through the oxidation and reduction reaction of the influent water to perform the electric sterilization, And is adapted to perform chemical sterilization.

Here, the bipolar electrode includes a porous base material having dimensional stability and a plurality of pores formed of a metal material, an electrode catalyst layer coated on the porous base material, and an electrode catalyst layer formed on the porous base material, And an insulating layer filled between the porous base materials coated with the catalyst layer.

Preferably, the insulating layer is filled between a predetermined number of porous preforms randomly set among a plurality of porous preforms.

It is preferable that the bi-polar electrode is formed of one of spherical and pellet type.

A seawater desalination apparatus using a bi-polar electrode according to the present invention comprises: a reactor provided with a flow path to which influent water is supplied; a porous bi-polar electrode provided inside the reactor; and a pair of polarities provided outside the reactor, And a magnet for inducing a pair of electrodes to the bi-polar electrode by generating an induced current.

 The magnet is preferably provided as a rotary permanent magnet that generates an induced current for inducing a pair of electrodes of the bipolar electrode by changing a pair of polarities of the magnetic field formed inside the reactor.

A pair of electrodes is induced between the pair of polarities generated by the magnetic field fluctuation due to the rotation of the magnet according to the induction current and the pair of electrodes is oxidized and reduced with the influent water, It is preferable that it is equipped to adsorb the contaminants of the influent water through the oxidation and reduction reaction with the influent water to perform the primary electrical sterilization of the contaminants of the influent water.

In addition, it is preferable that the biomolecule electrode is provided to generate an oxidant through the oxidation and reduction reaction between the influent water, and to perform secondary chemical sterilization of the contaminants of the influent water with the generated oxidant.

The polarized electrode is made of a metal material having a plurality of pores formed in a plurality of layers. The porous electrode includes a porous base material having dimensional stability, an electrode catalyst layer coated on the porous base material, and an insulating layer filled between the porous base material coated with the electrode catalyst layer. .

Preferably, the insulating layer is filled between a predetermined number of porous preforms randomly set among a plurality of porous preforms.

It is preferable that the bi-polar electrode is formed of one of spherical and pellet type.

The method for desalination of seawater using a bi-polar electrode according to the present invention comprises the steps of passing influent water through a reactor and a step of generating an induced current between a pair of polarities by a variation of a magnetic field formed between a pair of polarities Thereby forming a pair of electrodes of a bipolar electrode, and performing a primary electrical sterilization by adsorbing contaminants contained in the inflow water according to a pair of electrodes of the bipolar electrode.

The seawater desalination method using the bi-polar electrode may further include the step of generating an oxidant through the oxidation and reduction reaction by the induction current of the bi-polar electrode and performing the secondary chemical sterilization of the contaminants of the influent water with the generated oxidant .

Wherein the step of generating an induced current of the bi-polar electrode includes the steps of: forming a magnetic field by a pair of polarities of the magnet, generating an induced current between a pair of polarities due to a variation of the magnetic field as the magnet rotates, It is preferable that the pair of electrodes is guided to the bipolar electrode by the electrode.

Wherein the bipolar electrode comprises a porous base material having dimensional stability and a metal material having a plurality of pores formed in a plurality of layers, an electrode catalyst layer coated on the porous base material, and an insulating layer filled between the porous base material coated with the electrode catalyst layer Layer.

Preferably, the insulating layer is filled between a predetermined number of porous preforms randomly set among a plurality of porous preforms.

It is preferable that the bi-polar electrode is formed of one of spherical and pellet type.

As described above, according to the embodiment of the present invention, the oxidation and reduction reactions of the bi-polar electrode and the influent water are performed by a pair of electrodes of the bi-polar electrode induced by the induction current generated by the magnetic field fluctuation caused by the rotation of the magnet, The pollutants contained in the influent water are adsorbed through oxidization and chemical reaction between the electrodes and the influent water, and the influent water is sterilized by the generated oxidizing agent, thereby preventing induced current loss due to the bypass current between the pair of electrodes and the bi- It is possible to fundamentally prevent the internal temperature rise of the reactor from being caused by the bypass current and further improve the safety of the seawater desalination system due to the increase of the internal temperature of the reactor.

In addition, according to the embodiment of the present invention, since the bipolar electrode is manufactured in the form of one module and is continuously used, only the failed module is replaced, thereby facilitating the maintenance and management of the desalination system have.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention given below, serve to further understand the technical idea of the invention. And should not be construed as limiting.
1 is a view showing a configuration of a seawater desalination apparatus using a biplane electrode according to an embodiment of the present invention.
FIG. 2 is a flowchart illustrating a desalination process using a bi-polar electrode according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, It can be easily carried out. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the drawings, the same reference numerals are given to the same elements even when they are shown in different drawings. In the drawings, the same reference numerals as used in the accompanying drawings are used to designate the same or similar elements. And detailed description of the configuration will be omitted. Also, directional terms such as "top", "bottom", "front", "back", "front", "forward", "rear", etc. are used in connection with the orientation of the disclosed drawing (s). Since the elements of the embodiments of the present invention can be positioned in various orientations, the directional terminology is used for illustrative purposes, not limitation.

FIG. 1 is a view showing a seawater desalination apparatus using a bi-polar electrode according to an embodiment of the present invention. As shown in FIG. 1, an induced current of a polarized electrode is generated by a fluctuation of a magnetic field generated by the rotation of a magnet, The oxidizing and reducing reaction of the influent water due to the induction current, and sterilizing the contaminants of the influent water through the generated oxidizing agent. The apparatus includes the reactor 10, the bi-polar electrode 30, And a magnet (50).

The reactor 10 has a structure in which the front end and the rear end are opened, and the inflow water to be treated flows through the front end and the inflow water that has been sterilized is discharged to the rear end.

The bipolar electrode 30 is provided inside the reactor 10. That is, the bi-polar electrode 30 changes the magnetic field generated according to the polarity of the magnet 50 according to the rotation of the magnet, generates the induced current of the bi-polar electrode by the fluctuated magnetic field, And adsorbs the contaminants of the influent water through the oxidation and reduction reaction between the influent and the oxidant, and sterilizes the influent with the generated oxidant.

Here, the bi-polar electrode 30 absorbs contaminants by a pair of polarities, and sterilizes contaminants of influent water by an induced current generated by a fluctuating magnetic field. That is, the pollutant adsorbed on the bi-polar electrode 30 is oxidized by the oxidizing agent generated additionally through the oxidation-reduction reaction occurring between the inflow water and the bi-polar electrode 30, Secondary chemical sterilization takes place.

That is, the bi-polar electrode 30 induced by the change of the magnetic field not only oxidizes the organic matter in the anode but also oxidizes the Cl - ion contained in the seawater in a large amount in the seawater Remove. The reaction that gives off electrons directly from the surface of the oxidation electrode is referred to as a direct oxidation reaction, and the organic matter in the seawater contacting the electrode surface can also be directly oxidized by the reaction.

As shown in Equation 2, the oxidation reaction caused by the reaction with the material formed on the electrode surface is called an indirect reduction reaction, and the organic matter contained in the seawater is removed through oxidizing agent having high oxidizing power such as hypochlorous acid generated at this time can do.

(Formula 1) 2Cl - ? Cl 2 + 2e -

(Formula 2) 2Cl - + O 2 - > 2OCl -

In the cathode of the bipolar electrode, a reduction reaction occurs due to the induced current, and a small amount of polyvalent metal (Ca 2+ , Mg 2+ , Al 3+, etc.) contained in the seawater is electrochemically It can be removed in the seawater after sedimentation process.

(Equation 3) M 2+ + 2OH - → M (OH) 2 (precipitation) (M = Ca, Mg etc)

(Formula 4) M 2+ + 2e - ? 2M (precipitation) (M = Ca, Mg etc)

Electrochemical precipitation of polyvalent ions on the surface of a bipolar electrode is mainly a direct reduction reaction and an indirect reduction reaction. The direct reduction reaction is performed by directly receiving electrons from the electrode surface The indirect reduction reaction is a reaction in which OH - ions formed on a reducing electrode and a polyvalent ion are combined with each other to form a hydroxide type precipitate.

The catalyst layer on the anode side (oxidation reaction side or + side) of the bi-polar electrode 140 electrically sterilizes contaminants adsorbed on the porous base material, and electrochemically oxidizes the ozone, OH-radical , Chlorine, and the like, and the cathode side (reduction reaction side or - side) catalyst layer performs the function of generating hydrogen through the reduction reaction of the influent water.

The bi-polar electrode 30 has a pair of electrodes made of a metal material having a multi-layered structure having a plurality of pores. The bipolar electrode 30 means a pair of electrodes that simultaneously undergo oxidization and reduction reactions during conduction by an induction current and includes a porous base material 31 having dimensional stability so that one side and the other side communicate with each other, And an insulating layer 35 filled between the porous base materials 31. The electrode catalyst layer 33 is formed on the porous base material 31, Here, the porous base material is formed by pressing a thin metal wire having a tangled bundle to a predetermined thickness, or a plurality of metal powders are mixed with a binder and molded into a predetermined shape, followed by sintering.

Here, the porous base material 31 is made of a material having a conductive function and durability against oxidation-reduction in the electrolysis process, and is made of a material such as carbon, nickel, cobalt, titanium, zirconium, niobium, tungsten, hafnium, Stainless steel, iron or mixtures, oxides or alloys comprising two or more of these.

The electrode catalyst layer 33 is coated on the porous base material 31 so as to form a pair of electrodes and an insulating layer 35 is randomly formed between the porous base materials 31 formed on the electrode catalyst layer 33 Lt; / RTI >

Here, the electrode catalyst layer 33 is made of a catalytic metal material in which an electrochemical oxidation reaction and a reduction reaction proceed at the same time. The electrode catalyst layer 33 is formed of a metal such as platinum, palladium, rhodium, iridium, ruthenium, osmium, carbon, gold, tantalum, Nickel, tungsten, manganese, or a mixture, oxide, or alloy containing two or more of them, and is made of a mixed catalyst of at least one of platinum, iridium, ruthenium and the like.

The insulating layer 35 is filled between the porous base materials 31 coated with the electrode catalyst layer 33. The insulating layer 35 serves to remove a short current generated between the porous base materials 31 .

In addition, a spacer may be additionally provided to adjust the gap between the bipolar electrodes 30 so that the inflow water flows smoothly in the reactor 10. Such a spacer is obvious to those skilled in the art, so a detailed description thereof will be omitted.

On the other hand, the magnets 50 provided with the pair of polarities (S pole and N pole) are provided so as to be rotatable. That is, the magnet 50 is installed outside the reactor 10 so that a magnetic field is formed in the reactor 10 with a pair of polarities. Due to the rotation of the magnet 50, the magnetic field generated between the pair of polarities is varied, and an induced current is generated between the pair of polarities by the variation of the magnetic field.

Due to the induction current, oxidation and reduction reactions between the bi-polar electrode 30 and the influent water proceed simultaneously, so that the electrical and chemical filtering of the influent water is performed. That is, as the contaminant contained in the inflow water is adsorbed to the polarizing electrode 30, the inflow water is electrically sterilized, and at the same time, chemical sterilization of the contaminants of the influent water is performed by the oxidation and reduction reaction of the polarizing electrode by the induction current .

The sterilizing process of the contaminants of the influent water will be further described. The contaminants adsorbed on the bipolar electrode 30 lose electrons and are oxidized, and the first electrical sterilization is performed. The redox reaction between the inflow water and the bipolar electrode 30 A second chemical sterilization is performed by an oxidizing agent which is additionally generated through the reaction.

Therefore, the oxidation and reduction reactions of the bi-polar electrode and the influent water are proceeded by the pair of electrodes of the bi-polar electrode induced by the induction current generated by the magnetic field fluctuation caused by the rotation of the magnet, and oxidation and chemical reaction between the bi- It is possible to prevent induced current loss due to the bypass current between the pair of electrodes and the bi-polar electrode of the related art by adsorbing contaminants contained therein and sterilizing the influent water with the generated oxidizing agent, Can be fundamentally prevented and the safety of the seawater desalination system due to the increase in the internal temperature of the reactor can be further improved.

In addition, since the bi-polar electrode is manufactured in a single module form and is continuously used, only the failed module is replaced, thereby facilitating maintenance and management of the desalination system.

Due to the rotation of the magnet 50, the magnetic field generated between the pair of polarities is varied, and an induced current is generated between the pair of polarities due to the fluctuation of the magnetic field, And the oxidation and reduction reactions between the influent water and the influent water proceed simultaneously to perform the electrical and chemical filtering on the influent water will be described with reference to FIG.

FIG. 2 is a flow chart illustrating the operation of the desalination apparatus using the bi-polar electrode shown in FIG. 1. Referring to FIG. 2, a desalination process using a bi-polar electrode according to another embodiment of the present invention will be described.

First, when the inflow water passes through the front end of the reactor 10 and is rotated by the magnet 50, the magnetic field generated according to the polarity of the magnet is varied and an induced current is generated between a pair of polarities of the magnet 50 (Steps 101, 103, and 105). This induction current serves to induce the polarity of the bi-polar electrode 30 (step 107).

At this time, according to the polarity of the polarized electrode 30, the pollutant mixed in the influent water flowing into the reactor 10 flows into the inflow water and the bipolar electrode (not shown) 30), an oxidizing agent is additionally produced through the oxidation and reduction reaction, and secondary chemical sterilization is performed by the oxidizing agent (steps 111, 113, 115).

According to another embodiment of the present invention, oxidation and reduction reactions of the bi-polar electrode and the influent water proceed to a pair of electrodes of the bi-polar electrode induced by the induction current generated by the magnetic field variation caused by the rotation of the magnet, It is possible to prevent the induction current loss due to the bypass current between the pair of electrodes and the bi-electrode due to the adsorption of the contaminants contained in the influent water through the oxidation and the chemical reaction, In addition, it is possible to fundamentally prevent the internal temperature rise of the reactor due to the bypass current, and further improve the safety of the seawater desalination system due to the increase of the internal temperature of the reactor.

In addition, since the bi-polar electrode is manufactured in a single module form and is continuously used, only the failed module is replaced, thereby facilitating maintenance and management of the desalination system.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

The oxidation and reduction reactions of the bi-polar electrode and the inflow water are proceeded by the pair of electrodes of the bi-polar electrode induced by the induction current generated by the magnetic field variation caused by the rotation of the magnet, and oxidation and chemical reaction between the bi- It is possible to prevent the induction current loss due to the bypass current between the pair of conventional electrodes and the bi-polar electrode by the adsorption of contaminants and sterilization of the influent with the generated oxidizing agent, The safety of the seawater desalination system due to the increase in the internal temperature of the reactor can be further improved. By replacing the failed module only by continuously using the bi-polar electrode in the form of one module, A biomolecule electrode that is easy to maintain and manage for a desalination system, and The seawater desalination system and method using the seawater desalination system can be greatly improved in terms of operation accuracy and reliability and further in terms of performance efficiency, and the seawater desalination system to be applied is not only commercially viable, It is an invention that is industrially usable.

Claims (14)

A reactor having a flow path through which inflow water is supplied;
A porous bipolar electrode provided inside the reactor,
And a magnet provided outside the reactor and generating an induced current according to a change in magnetic field to induce a pair of electrodes of the bi-polar electrode.
The magnetron of claim 1, wherein the magnet
And a rotating permanent magnet for generating an induction current for inducing a pair of electrodes of the bipolar electrode by varying a pair of polarities of the magnetic field formed inside the reactor.
3. The semiconductor device according to claim 2, wherein the bi-
A pair of electrodes is induced by an induction current generated between a pair of polarities due to the magnetic field fluctuation caused by the rotation of the magnet and oxidation and reduction reactions of the influent water are performed by the pair of electrodes induced, Wherein the first electrolytic sterilizer is configured to suck contaminants of the influent water through the first electrolytic cell and to sterilize the influent water.
The plasma display apparatus according to claim 3, wherein the bi-
And an oxidizing agent is generated through oxidation and reduction reaction with the influent water, and secondary chemical sterilization of the contaminants of the influent water is performed with the generated oxidizing agent.
5. The semiconductor device according to claim 4, wherein the bi-
A porous base material having a plurality of pores formed in a multi-layered metal material and having dimensional stability,
An electrode catalyst layer coated on the porous base material,
And an insulating layer filled between the porous base materials coated with the electrode catalyst layer.
6. The semiconductor device according to claim 5,
Wherein the porous base material is filled between a predetermined number of porous base materials set randomly among a plurality of porous base materials.
The plasma display apparatus according to claim 1,
Wherein the desalination unit is formed of one of a spherical shape and a pellet shape.
Is provided inside the reactor
Due to the magnetic field fluctuation caused by the rotation of the magnet, induction current is generated between the pair of polarities, and a pair of electrodes is induced by the generated induction current. The pair of electrodes led to oxidation and reduction reaction with the influent water, And performing a first electrical sterilization of the contaminants of the influent water by adsorbing the contaminants of the influent water through the reduction reaction,
Characterized in that an oxidizing agent is produced through an oxidation and reduction reaction between the influent water and a secondary chemical sterilization of the contaminants of the influent water is performed by the produced oxidizing agent.
The plasma display apparatus according to claim 8,
A porous base material having a plurality of pores formed in a multi-layered metal material and having dimensional stability,
An electrode catalyst layer coated on the porous base material,
And an insulating layer filled between the porous base materials coated with the electrode catalyst layer to remove a short-circuit current between the porous base metals.
10. The semiconductor device according to claim 9,
Wherein the porous base material is filled between a predetermined number of randomly set porous base materials among the plurality of porous base materials.
The plasma display apparatus according to claim 8,
Wherein the positive electrode is formed of one of a spherical and pellet type.
Passing the influent of the reactor,
A step of inducing an induced current between a pair of polarities due to a variation of a magnetic field due to the rotation of the magnet and inducing a pair of electrodes of the bi-
And performing a primary electrical sterilization by adsorbing contaminants contained in the inflow water according to a pair of electrodes of the biplane electrode.
The method of claim 12, wherein the seawater desalination method using the bi-
Further comprising the step of generating an oxidant through oxidation and reduction reaction with the influent water by the induction current of the bi-polar electrode and performing the secondary chemical sterilization of the contaminant of the influent water with the generated oxidizing agent Seawater desalination method.
13. The method of claim 12, wherein generating the induced current of the bi-
A magnetic field is formed by a pair of polarities of the magnets,
An induction current is generated between the pair of polarities due to the variation of the magnetic field in accordance with the rotation of the magnet,
And a pair of electrodes are guided to the bi-polar electrode by the generated induced current.
KR1020140169477A 2013-11-29 2014-12-01 Bipolar electrondes and seawater disalination apparatus and method using same KR20150063306A (en)

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