KR101655364B1 - Complex Electrode for Desalination having Ion Exchange Membrane, Manufacturing Method thereof and Deionization Equipment using the Same - Google Patents

Abstract

The present invention relates to a composite electrode for desalting having an ion exchange membrane, a method for producing the same, and a desalination apparatus using the same, wherein the composite electrode for desalting is a porous ion exchange substrate having micropores; An ion exchange membrane formed by electrospinning an ion exchange solution on one surface of the porous ion exchange substrate; And a conductive film formed on the other surface or the entire surface of the porous ion-exchange substrate.

Description

TECHNICAL FIELD [0001] The present invention relates to a composite electrode for desalting having an ion exchange membrane, a method for producing the same, and a desalination apparatus using the same.

The present invention relates to a composite electrode for desalting, and more particularly, to a composite electrode for desalting having an ion exchange membrane capable of having a high storage capacity in an ultra-thin structure, a manufacturing method thereof, and a desalination apparatus using the same.

In general, only about 0.0086% of all water on Earth is usable. This can not be overly generous if you consider the disaster caused by climate change.

Water is very important in human life, and water is widely used as living water or industrial water. Water is polluted by heavy metals, nitrate nitrogen, fluoride ions, etc. due to industrial development, and it is very harmful to health when drinking contaminated water.

Recently, a variety of desalination techniques have been studied for purifying contaminated water and purifying seawater for use as a water source.

This desalination technique is a technique of desalinating by removing various suspended substances and ion components contained in contaminated water such as seawater and wastewater. The desalination technique is an evaporation method in which water is evaporated using a heat source such as fossil fuel or electricity, And an electrodialysis method for removing ions using the electrolytic action of the electrode cell.

The evaporation method evaporates water by using fossil fuel or electric power as a heat source, and it is not only inefficient due to the large volume of the desalination device, but also consumes a large amount of energy, thereby increasing the manufacturing cost, It causes pollution.

The filtration method requires high pressure to remove the foreign materials by applying a high pressure to the separation membrane. Therefore, the energy cost is increased, and the electrodialysis method requires continuous replacement of the electrode cells, which causes wasted factors due to the replacement of the electrode cells. There is a disadvantage that human and material incidental expenses are increased.

Korean Patent Registration No. 501417 discloses a reverse osmosis membrane device that primarily removes salt components from treated water flowing at a predetermined pressure; An electrode desalination device for sequentially removing the salt component from the treated water primarily treated in the reverse osmosis membrane device, wherein the spacer, the positive electrode, and the negative electrode are sequentially disposed in a cylindrical tank; An energy recovery device for utilizing the brine side pressure of the reverse osmosis membrane device to pressurize the inlet of the electrode desalination device; Power supply means for supplying power to the positive and negative electrodes of the electrode desalination apparatus; And control means for controlling the valves provided in the pipes through which the process water flows to carry out a desalination process for desalinating the process water introduced into the electrode desalination device and a regeneration process for desorbing the ions adsorbed on the electrodes during the desalination process A waste water desalination apparatus using a reverse osmosis membrane / electrode method is disclosed. However, such a waste water desalination apparatus is disadvantageous in that a reverse osmosis membrane apparatus and an electrode desalination apparatus are separately provided, and the size of the desalination apparatus is large and a large manufacturing cost is required.

Therefore, the inventors of the present invention have continued to carry out researches on a technology capable of reducing the desalination apparatus and reducing the manufacturing cost, so that the structural characteristics of the current collector module capable of having a high storage capacitance and simultaneously realizing a thin film- The present invention has been completed, which is more economical, utilizable and competitive.

Korean Patent Registration No. 501417

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide an ion exchange membrane having an ultra-thin structure having a high storage capacity A composite electrode for desalting having an ion exchange membrane capable of implementing a desalting composite electrode, a method for manufacturing the same, and a desalination apparatus using the same.

Another object of the present invention is to provide an ion exchange membrane capable of applying a current collector to a micropores of a porous ion-exchange base material to reduce the manufacturing cost, have a high storage capacity, and increase the specific surface area A composite electrode for desalting, a manufacturing method thereof, and a desalination apparatus using the same.

Still another object of the present invention is to provide a composite electrode for desalting having an ion exchange membrane capable of forming an ultra thin film by integrating an electrode and a current collector to make the desalination apparatus slimmer, a manufacturing method thereof, and a desalination apparatus using the same.

Another object of the present invention is to provide a composite electrode for desalting having an ion exchange membrane capable of implementing a flexible desalination module, a method of manufacturing the same, and a desalination apparatus using the same.

In order to achieve the above-mentioned object, an embodiment of the present invention is a porous ion-exchange substrate having micropores; An ion exchange membrane formed by electrospinning an ion exchange solution on one surface of the porous ion exchange substrate; And a conductive film formed on the other surface or the entire surface of the porous ion-exchange substrate.

Also, an embodiment of the present invention provides a method of forming a porous ion-exchange substrate, comprising: forming a porous ion-exchange substrate having micropores; A step of forming an ion exchange membrane by spraying an ion exchange solution on one surface of the porous ion exchange substrate to accumulate droplets of droplets; And depositing a conductive material on the other surface of the porous ion-exchange substrate to form an electroconductive film.

In addition, one embodiment of the present invention provides a method of forming a porous ion-exchange substrate having a laminated structure of one or both selected from a nanofiber web having accumulated nanofibers obtained by electrospinning a polymer material and having three-dimensional micropores, and a nonwoven fabric ; Depositing a conductive material on the other surface or the entire surface of the porous ion-exchange substrate to form a conductive film; Forming a plating layer by plating a conductive material formed on the other surface of the porous ion-exchange substrate with a metal material; And coating an ion exchange solution on one surface of the porous ion-exchange substrate to form an ion-exchange membrane.

In addition, one embodiment of the present invention is directed to a porous membrane, comprising: a porous ion-exchange substrate having micropores; a conductive membrane formed on the other surface of the porous ion-exchange substrate; and a first desalination complex electrode; And a porous ion-exchange substrate having micropores, which faces the first desalting composite electrode with a space therebetween, a conductive film formed on the other surface of the porous ion-exchange substrate, ion exchange formed on one surface of the porous ion- And a second desalting composite electrode including a membrane.

As described above, according to the present invention, an ultra-thin structure that forms an ion-exchange nanofiber web by electrospinning an ion exchange solution on one surface of a porous ion-exchange substrate and forms a conductive film on the other surface or the entire surface of the porous ion- There is an advantage that a composite electrode for desalting having a high storage capacity can be realized.

In addition, the present invention realizes an electrode structure in which a conductive material is infiltrated into micropores of a porous ion-exchange base material, thereby producing an electrode having a very high specific surface area and an ultra-thin electrode.

In addition, the present invention has an advantage that a flexible desalination electrode composite can be realized by applying a nanofiber web or nonwoven fabric having excellent flexibility to an electrode support.

In addition, in the present invention, it is possible to easily adjust the pore size of the electrode support and to realize an electrode having pores of uniform size, so that the efficiency of adsorption and desorption of ions can be improved, and the binder is not used, And to manufacture a composite electrode for desalting which can reduce the production cost by a simple manufacturing process.

In addition, according to the present invention, there is an advantage in that a composite electrode for desalting can be realized by impregnating a conductive material into fine pores of a porous ion-exchange base material to produce an electrode, thereby reducing manufacturing costs and having a high storage capacity at low cost .

In addition, in the present invention, by forming a conductive film on a porous ion-exchange substrate having micropores to realize an ultra-thin composite electrode for desalting, an ultra-thin desalination device can be realized.

In addition, in the present invention, an ion exchange membrane is formed by electrospraying an ion exchange solution and accumulating droplets ejected therefrom. Thus, it is possible to form an inorganic hollow film having a dense structure and to have an ultra thin film thickness, It is possible to move to the scion, and the resistance of the ions to move can be lowered.

1 is a conceptual sectional view for explaining a desalting composite electrode having an ion exchange membrane according to an embodiment of the present invention,
2 is a conceptual cross-sectional view illustrating a plating layer formed on a desalting composite electrode having an ion exchange membrane according to an embodiment of the present invention,
3 is a flowchart of a method of manufacturing a desalting composite electrode having an ion exchange membrane according to an embodiment of the present invention,
4 is a conceptual view for explaining some steps of a method for manufacturing a desalting composite electrode having an ion exchange membrane according to an embodiment of the present invention,
FIG. 5 is a conceptual view for explaining a desalination apparatus according to the first embodiment of the present invention,
FIG. 6 is a conceptual view for explaining a desalination apparatus according to a second embodiment of the present invention,
7 is a conceptual view for explaining a desalination apparatus according to a third embodiment of the present invention,
FIG. 8 is a conceptual view for explaining a structure in which the filter module of FIG. 7 is stacked. FIG.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

Embodiments of the present invention can realize an ultra-thin structure that forms an inorganic ion exchange membrane by electrospraying an ion exchange solution on one surface of a porous ion exchange substrate and forms a conductive film on the other surface or whole surface of the porous ion exchange body, To thereby obtain a desalting composite electrode.

FIG. 1 is a conceptual sectional view for explaining a desalting composite electrode having an ion exchange membrane according to an embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view of a desalting composite electrode having an ion exchange membrane according to an embodiment of the present invention. And is a conceptual cross-sectional view for explaining formation of a plating layer.

1, a desalting composite electrode according to an embodiment of the present invention includes a porous ion exchange substrate 110 having micropores; An inorganic ion exchange membrane 120 formed by electrospinning an ion exchange solution on one surface 111 of the porous ion exchange substrate 110; And a conductive film 130 formed on the other surface 112 or the entire surface of the porous ion-exchange substrate 110.

In the present invention, when the ion exchange solution is injected on one surface of the porous ion exchange substrate 110, the droplets are injected from the nozzles, and most of the solvent is volatilized and the droplets are accumulated, thereby forming the inorganic porous ion exchange membrane 120 ) Can be formed, so that a separate drying step is unnecessary and productivity can be maximized.

The porous ion exchange substrate 110 may be a porous thin film formed by accumulating nanofibers made by electrospinning an ion exchange solution, and may be a porous electrode made of an ion exchange material and having a high specific surface area.

The inorganic porous ion exchange membrane 120 may be a cation exchange membrane or an anion exchange membrane depending on the polarity of the electrode, and the inorganic porous ion exchange membrane 120 selectively adsorbs ions to the electrode. That is, an anion exchange membrane is coupled to the anode, and a cation exchange membrane is coupled to the cathode. When a voltage is applied, only cations are adsorbed to the cathode and only anions are adsorbed to the anode.

When the ion exchange solution is sprayed, the droplet of a small size is injected from the nozzle to be sprayed, and the droplet is further finely divided and accumulated by the electric force, so that the inorganic porous ion exchange membrane 120 is formed do.

Therefore, since the inorganic porous ion exchange membrane 120 is an inorganic porous membrane formed by accumulating droplets made by electrospinning, the inorganic porous ion exchange membrane 120 can be formed very thinly and uniformly, The efficiency can be improved.

This inorganic porous ion exchange membrane 120 has the effect of preventing the ions desorbed upon desorption after adsorbing ions from the storage desalination apparatus from being adsorbed again to the counter electrode.

In the present invention, the inorganic porous ion exchange membrane (120) has an inorganic porous form so that the selective permeability of ions can be increased. On the other hand, if the ion exchange membrane having pores has pores, it is not a desirable structure because both positive ions and negative ions can pass through the pores in spite of the electrical attractive force or the repulsive force.

As described above, in the present invention, by forming the inorganic ion exchange membrane 120 by spraying the ion exchange solution and accumulating the injected droplets, it is possible to realize an inorganic hollow film form having a dense structure, , Only the selected ions can move freely, and the resistance to the movement of ions can be lowered.

The conductive film 130 may be formed by depositing a conductive material on the other surface 112 of the porous ion exchange substrate 110. Examples of the conductive material include nickel, copper, stainless steel, titanium, chromium, manganese, iron, cobalt, zinc, molybdenum, One of metals such as molybdenum (Mo), tungsten (W), silver (Ag), gold (Au) and aluminum (Al) can be applied.

When a conductive material is deposited on the porous ion-exchange substrate 110 of the desalting composite electrode, the conductive material to be deposited is permeated into the plurality of pores of the porous ion-exchange substrate 110 to be formed as a porous electrode.

That is, since the porous ion-exchange substrate 110 is formed by accumulating nanofibers composed of an ion exchange material and has a plurality of micropores, the deposited conductive material is permeated into a plurality of micropores, The pores of the porous ion exchange substrate 110 after being formed and deposited are finer than the pores of the porous ion exchange substrate 110 before deposition. Therefore, the desalting composite electrode of the present invention has an electrode structure having micropores capable of adsorbing ions, and thus can be used as a storage desalination electrode.

2, a desalting composite electrode according to an embodiment of the present invention further includes a plating layer 150 plated on a conductive film 130 formed on the porous ion-exchange substrate 110, and the plating layer 150 150) becomes the current collector.

The plating layer 150 improves the electrical conductivity of the desalination composite electrode and does not require a separate current collector. Therefore, the plating layer 150 can be made ultra thin and slim, and the desalination device can be downsized. Here, the plating layer 150 is plated on the conductive film 130 formed on the porous ion-exchange substrate 110, and the plating layer 150 is formed on only one side of the porous ion-exchange substrate 110. That is, the composite electrode for desalting applied to the present invention serves to simultaneously serve as an electrode and a current collector as one sheet, and the conductive film 130 formed by vapor deposition does not have sufficient electrical conductivity for a desalting composite electrode The plating layer 150 is required.

The reason for forming the plating layer 150 on only one surface of the porous ion exchange substrate 110 is that if the plating is performed, the pores are clogged, and the electrode portion of the desalting composite electrode must be porous. Do not form.

Accordingly, the desalting composite electrode according to an embodiment of the present invention is an electrode structure in which a conductive material is permeated into micropores of a porous ion-exchange base material such as a nanofiber web, and has an electrode having a very high specific surface area, It is advantageous to fabricate an ultra thin electrode having a thickness of about 20 탆.

In addition, in the present invention, a porous ion exchange base made of nanofibers excellent in flexibility can be fabricated as an electrode support to realize a flexible composite electrode for desalting, and at the same time, a composite electrode for desalting There is an advantage to be able to do.

In addition, in the present invention, it is possible to easily adjust the pore size and to realize an electrode having pores of uniform size, thereby maximizing the adsorption and desorption efficiency of ions.

In addition, in the present invention, there is no risk of elution of the binder because no binder is used, and an economical electrode can be produced with a simple process.

In addition, in the present invention, it is possible to provide a composite electrode for desalting capable of reducing manufacturing costs and having a high storage capacity at a low cost by forming an electrode by penetrating a conductive material into the micropores of the porous ion-exchange base.

FIG. 3 is a flow chart of a method for manufacturing a desalting composite electrode having an ion exchange membrane according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view illustrating a method of manufacturing a desalting composite electrode having an ion exchange membrane according to an embodiment of the present invention FIG. 3 is a conceptual view for explaining a part of the process of FIG.

Referring to FIG. 3, a desalting composite electrode having an ion exchange membrane according to an embodiment of the present invention includes a porous ion-exchange substrate having nanofibers accumulated therein by electrospinning ion exchange solution and having three-dimensional micropores (S100).

Then, an ion exchange membrane is formed by accumulating the injected droplets by electrospinning the ion exchange solution on one surface of the porous ion exchange substrate (S110), and a conductive substance is deposited on the other surface or entire surface of the porous ion exchange substrate to form a conductive film (S120).

On the other hand, the conductive film is deposited using CVD (Chemical Vapor Deposition) or PVD (Physical Vapor Deposition) depending on the material of the conductive material.

Referring to FIG. 4, a process for forming the porous ion-exchange substrate 110 and the inorganic ion-exchange membrane 120 in the method for manufacturing a desalting composite electrode having an ion-exchange membrane according to an embodiment of the present invention will be described. First, when the ion exchange solution is used as a spinning solution and the ion exchange solution is electrospun by the first nozzle 41, the spun nanofibers 111 are accumulated to form the porous ion exchange base material 110. The formed porous ion exchange substrate 110 is then moved to the bottom of the second nozzle 42 and the ion exchange solution is sprayed onto the porous ion exchange substrate 110 in the downward direction 125 of the second nozzle 42, The injected droplets 121 are accumulated in the porous ion exchange substrate 110 and are formed into the inorganic ion exchange membrane 120.

FIG. 5 is a conceptual view for explaining a desalination apparatus according to a first embodiment of the present invention, and FIG. 6 is a conceptual diagram for explaining a desalination apparatus according to a second embodiment of the present invention.

5, the desalination apparatus according to the first embodiment of the present invention comprises a porous ion-exchange substrate having micropores, a conductive membrane formed on the other surface or the entire surface of the porous ion-exchange substrate, a porous membrane formed on one surface of the porous ion- A first desalination composite electrode 160 including an ion exchange membrane; A porous ion-exchange substrate having fine pores, a conductive film formed on the other surface or the entire surface of the porous ion-exchange substrate, and a surface of the porous ion-exchange substrate facing the first desalination composite electrode 160 with a space therebetween, And a second desalting composite electrode 170 including an ion exchange membrane formed on the second electrode 170.

The first and second desalination composite electrodes 160 and 170 are collectors of different polarities or potentials capable of generating dislocations. For example, the first desalting composite electrode 160 is a negative electrode collector, and the second desalination The composite electrode 170 is a positive electrode collector.

When the electric potential is applied between the first and second composite desalting electrodes 160 and 170, the electric double layer formed on the surfaces of the first and second composite desalting electrodes 160 and 170 is electrically attracted to one side of the desalter The ions contained in the treated water such as seawater or wastewater are adsorbed and removed on the surface of the first and second desalination composite electrodes 160 and 170 to be purified to the other side of the desalination apparatus. At this time, the porous electrode absorbs the ions contained in the treated water such as seawater and wastewater by an electrical attraction.

6, the desalination apparatus according to the second embodiment of the present invention is located in a space between the first and second desalination composite electrodes 160 and 170 as compared with the desalination apparatus according to the embodiment, And a nonwoven fabric 180.

In the desalination apparatus according to the second embodiment of the present invention, ions are adsorbed in the treated water passing through the nonwoven fabric 180 at a potential applied to the first and second composite desalting electrodes 160 and 170, thereby achieving a storage desalination .

A plurality of irregularly shaped pores are formed in the nonwoven fabric 180. The flow direction of the treated water passing between the first and second composite desalting composite electrodes 160 and 170 is varied in various ways, The adsorption efficiency of the ions can be increased by the potential applied between the desalting composite electrodes 160 and 170.

In the desalination apparatus according to the first and second embodiments of the present invention, a conductive membrane is formed on the porous ion-exchange substrate having micropores to realize an ultra-thin composite electrode for desalting, thereby realizing an ultra-thin desalination apparatus.

In the present invention, a plating layer for improving electrical conductivity may be further formed on the conductive film applied to the desalination apparatus according to the first and second embodiments.

On the other hand, in the desalination apparatus according to the first and second embodiments of the present invention, when the adsorbed ions reach the storage capacity of the composite electrode for desalting, the electrode potential is switched to 0 volts (V) The desalination apparatus can be regenerated by desorbing the ions adsorbed on the composite electrode and backwashing it.

FIG. 7 is a conceptual view for explaining a desalination apparatus according to a third embodiment of the present invention, and FIG. 8 is a conceptual diagram for explaining a structure in which the filter module of FIG. 7 is stacked.

Referring to FIG. 7, the desalination apparatus according to the third embodiment of the present invention may further include a filter module 200 capable of filtering heavy metal ions and bacterial substances disposed at the other end of the purified water.

The filter module 200 may be installed at the other end of the desalination device to remove heavy metal ions and bacterial substances such as bacteria and microorganisms. 7 is a conceptual diagram showing the filter module 200 being separated from the other end of the desalination device. However, the present invention is not limited thereto, and may be applied to the first and second desalination composite electrodes 160 and 170 It should be constructed so as to basically prevent leakage of the first purified water. For example, the filter module 200 may be attached to the other end of the desalination device, or a guide for preventing leakage of the first purified water may be installed between the first and second desalination composite electrodes 160 and 170 and the filter module 200 .

The filter module 200 includes a silver mesh module 220 and a silver mesh module 220 for removing heavy metal ions from the first purified water from which ions are removed from the first and second desalination composite electrodes 160 and 170, And a nanofiber web 210 for filtering the bacterial material in a second purified water (not shown) where heavy metal ions are removed.

The nanofiber web 210 has three-dimensional micropores formed therein, and the bacterial material is collected on the nanofiber web while the second purified water passes through the nanofiber web 210.

As shown in FIG. 8, the filter module 200 can be realized by repeatedly stacking the silver mesh module 220 and the nanofiber web 210 in a stacked structure.

Therefore, in the present invention, a filter module is further included in the desalination device, so that heavy metal ions and bacterial substances can be filtered.

Meanwhile, in the present invention, the nanofiber web 210 can be embodied as a nanofiber web in which nanofibers containing silver nanoparticles are laminated, that is, purified water passing through a nanofiber web containing silver nanoparticles can prevent the propagation of germs Thereby increasing the antibacterial property.

In this case, a nanofiber web is prepared by dissolving a silver nanoparticle material and a polymer material in an organic solvent to prepare a spinning solution, and then electrospinning to laminate the nanofibers.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the embodiments set forth herein. Various changes and modifications may be made by those skilled in the art.

The present invention provides an ultra-thin desalination device by forming an ion-exchange membrane on one surface of a porous ion-exchange substrate and fabricating a desalting composite electrode capable of having a high storage capacity with an ultra-thin structure that forms a conductive film on the other surface or entire surface of the porous ion- can do.

100, 110a, 110b: porous ion-exchange substrate 113: nanofiber
117, 210: Nano fiber web 120, 120a, 120b: ion exchange membrane
130, 130a, 130b: conductive film 131: conductive material
150: Plated layer 160, 170: Composite electrode for desalting
180: nonwoven fabric 200: filter module
220: silver mesh module

Claims (15)

A porous ion exchange material having micropores formed by accumulation of nanofibers of an ion exchange material formed by electrospinning of an ion exchange solution;
An inorganic porous ion exchange membrane formed by electrospinning an ion exchange solution on one surface of the porous ion exchange substrate; And
And a conductive film formed on the other surface of the porous ion-exchange substrate,
The conductive membrane is formed of a conductive material deposited on the porous ion-exchange substrate, and the conductive material penetrates into the micropores to make the micropores finer, and the porous ion-exchange substrate becomes a porous electrode capable of ion- Composite electrode for desalting. The desalting composite electrode according to claim 1, wherein the ion exchange membrane is a cation exchange membrane or an anion exchange membrane. delete delete delete The desalting composite electrode according to claim 1, further comprising a plating layer plated on the conductive film. Depositing nanofibers of an ion exchange material produced by electrospinning an ion exchange solution to form a porous ion exchange substrate having micropores;
Forming an inorganic porous ion exchange membrane having an injection droplet accumulating by spraying an ion exchange solution on one surface of the porous ion exchange substrate; And
And depositing a conductive material on the other surface of the porous ion-exchange substrate to form a conductive film,
Wherein the conductive material is infiltrated into the micropores to make the micropores finer, and the porous ion-exchange substrate is a porous electrode capable of ion adsorption. The method of claim 7, further comprising forming a plating layer by performing a plating process on the conductive film. Depositing nanofibers of an ion exchange material produced by electrospinning an ion exchange solution to form a porous ion exchange substrate having micropores;
Depositing a conductive material on one surface of the porous ion-exchange substrate to form a conductive film;
Forming a plating layer on the conductive film formed on the porous ion-exchange substrate by plating a metal material; And
And coating an ion exchange solution on the other surface of the porous ion-exchange substrate to form an inorganic ion exchange membrane,
Wherein the conductive material is infiltrated into the micropores to make the micropores finer, and the porous ion-exchange substrate is a porous electrode capable of ion adsorption. A first porous ion-exchange substrate having fine pores, an inorganic porous ion-exchange membrane formed on one surface of the first porous ion-exchange substrate, and a conductive membrane formed on the other surface of the first porous ion- ; And
An inorganic porous ion exchange membrane formed on one surface of the second porous ion exchange substrate, a second porous ion exchange membrane facing the first porous membrane, And a second desalting composite electrode including a conductive film formed on the other surface of the substrate,
Wherein each of the conductive films is formed of a conductive material deposited on each of the first and second porous ion exchange substrates, and the conductive material is infiltrated into each of the micropores to finer the micropores, 2 The porous ion-exchange substrate is a porous electrode capable of ion-adsorbing. The desalination apparatus according to claim 10, wherein a nonwoven fabric having a flow path through which process water can pass is disposed between the first desalting composite electrode and the second desalting composite electrode. 12. The method of claim 11, further comprising the steps of: providing a filter capable of filtering heavy metal ions and bacterial material in the purified water in a region where the ions contained in the treated water are adsorbed by the first and second desalting composite electrodes to discharge the purified water; Further comprising a module. 13. The filter module of claim 12,
A silver (Ag) mesh module for removing heavy metal ions from the purified water; And
Wherein the silver is immobilized on the mesh module and comprises a nanofibrous web for filtering bacterial material in the purified water from which heavy metal ions have been removed. 14. The filter module of claim 13,
Wherein the silver mesh module and the nanofiber web are laminated repeatedly. 14. The nanofiber web of claim 13,
A desalination unit, which is a nanofiber web with nanofibers laminated with silver nanoparticles.

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