KR20180119142A - An apparatus for controlling wash of capacitive deionization module - Google Patents

Abstract

Disclosed is an apparatus for controlling wash of an electroadsorption module, which comprises: a measuring part detecting and measuring the contamination state of the electroadsorption module for adsorbing ionic contaminants contained in water supplied from a water supply part to an electrode and desorbing and removing the adsorbed ionic contaminants; and a control part comparing a measurement value measured by the measuring part with a reference value to determine a washing time of the electroadsorption module and controlling a washing agent supply unit so as to supply a washing agent to the electroadsorption module depending on determined results.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cleaning control device for an electro-

The present invention relates to a control device for cleaning contamination of an electro-absorption module, and more particularly, to a control device for cleaning contamination of an electro-absorption module, And a cleaning control device of an electro-absorption module which can be cleaned.

Currently, the ion exchange method using an ion exchange resin is widely used as a method for removing an ionic substance in an aqueous solution. This method effectively separates most of the ionic materials, but it has the disadvantage that a large amount of acid, base, or salt waste solution is generated during the regeneration of the ion-exchanged resin. In addition, membrane technologies such as reverse osmosis membrane method and electrodialysis method are applied, but problems such as reduction of treatment efficiency due to membrane fouling, washing of contaminated membrane, periodic membrane replacement, and the like, are encountered. Capacitive deionization (CDI) using the principle of electric double layer has been studied as a solution to the problems of the conventional desalination technologies.

Electrodeposition process technology operates at low electrode potential because it utilizes the adsorption reaction of ions by electric attraction in the electric double layer formed on the electrode surface when potential is applied to the electrode. As a result, energy consumption is lower than other desalting technologies It is being evaluated as a next-generation desalination technology.

However, even in such an electro-adsorption process, the electrode or the ion-exchange layer may be contaminated by an organic matter or an inorganic substance on the solution to be treated, and the performance may be deteriorated. This requires regeneration through periodic cleaning.

As for the contamination, the contamination by the organic material in the anion exchange layer and the anode which adsorbs the anion, and the contamination by the inorganic material in the cation exchange layer and the cathode which respectively adsorb the cation are remarkable. Particularly, the contamination of the cation exchange layer and the cathode due to the inorganic matter is more marked when the voltage exceeding the water decomposition is applied.

Generally, such pollutants are mainly removed by chemical cleaning. In particular, the contamination of the organic material is cleaned with the alkali solution, and the contamination with the inorganic material is cleaned with the acidic solution.

However, if such a chemical cleaning agent is directly injected from the site, it is necessary to construct a chemical tank and a supply pump for storing a separate cleaning agent, and the necessity of maintenance due to the storage of the chemical is implied. Especially, as the necessity of legal and institutional management like the Chemical Substance Management Act recently increases, it has various problems in management.

In addition, the cleaning operation must be performed by supplying the cleaning agent before the electrode or the ion exchange layer is deteriorated due to contamination.

Therefore, by accurately checking the degree of contamination of the electrode or the ion exchange layer and performing a cleaning operation at an appropriate time, the efficiency of the adsorption and desorption process of the contaminants contained in the water can be stably maintained and the performance of the electrode or the ion exchange layer Is prevented from being lowered.

Korean Patent No. 10-1410642

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cleaning control device for an improved electro-absorption module, which can effectively perform a cleaning process by accurately measuring the degree of contamination of an electrode or an ion exchange layer .

In order to achieve the above object, a cleaning control apparatus of an electro-absorption module according to the present invention comprises: an adsorption unit for adsorbing an ionic contaminant contained in water supplied from a water supply unit to an electrode, desorbing and removing adsorbed ionic contaminants, A measuring unit for sensing and measuring the contamination state of the module by an electrochemical signal; And a control unit for comparing the measured value measured by the measuring unit with a reference value to determine the cleaning timing of the electrostatic adsorption module and controlling the cleaning agent supply unit to supply the cleaning agent to the electrostatic adsorption module according to the determination result .

As a result, the degree of contamination of the electro-absorption module can be easily checked, and the cleaning time can be accurately determined.

The measuring unit may include a first measuring unit for measuring a change in electrochemical characteristics of the electrode of the electro-absorption module with respect to the positive electrode and the negative electrode. As a result, the cleaning time can be accurately determined by a simple structure using the change in electrochemical characteristics of the electrode.

The measuring unit may include a second measuring unit for measuring an electrochemical characteristic of the water on the inlet side at a water inlet of the electro-absorption module; And a third measuring unit for specifying the electrochemical characteristics of the effluent water at the water outlet of the electro-absorption module; It is preferable that at least one of them is included.

The control unit may correct the measured value measured by the first measuring unit using the measured data or the measured data at the second measuring unit or the third measuring unit to determine whether the electro- .

At this time, the electrochemical characteristic signals measured in the second measuring unit and the third measuring unit may indicate at least one measurement value among the conductivity, ORP, and pH value of the water.

This makes it possible to improve the accuracy of the measurement data by complementing each other with a plurality of measurement factors to determine the accurate cleaning time point.

Also, the electro-absorption module may include a module body having a water inlet and a water outlet, and a positive electrode and a negative electrode disposed inside the module body so as to face each other, wherein the first measuring portion has a water inlet side A reference electrode disposed at an outlet side or at a point inside the adsorption module; And a first voltmeter for measuring a voltage between the reference electrode and the negative electrode, wherein the control unit compares the voltage measured in the first voltmeter with a set value to determine whether the cleaning operation is performed, good.

At this time, the cleaning of the cathode electrode by the first voltmeter is preferably performed using an acidic solution cleaning agent.

As a result, the first voltmeter can be installed in the electro-absorption module with a simple structure, and cleaning can be performed by measuring the electrochemical characteristic signal.

The first measurement unit may further include a second voltmeter for measuring a voltage between the reference electrode and the anode electrode, and the control unit may control at least one of the voltages measured in the first and second voltmeters, And when the set value is reached, it is determined that the cleaning operation time is the time point.

Preferably, the cleaning operation according to the abnormal signal of the first voltmeter is performed using an acidic cleaning agent, and the cleaning operation according to an abnormal signal of the second voltmeter is performed using an alkaline cleaning agent. That is, the control unit performs the cleaning operation by supplying the acidic detergent to the electrostatic adsorption module when the abnormality signal of the first voltmeter is supplied, and when the abnormality signal of the second voltmeter is supplied, the alkali detergent is supplied So that the cleaning operation is performed.

As a result, a plurality of voltmeters can be provided to improve the reliability of measured values, and the cleaning can be performed even when the contamination degree of either the cathode electrode or the anode electrode is high.

In addition, the reference electrode preferably includes a silver-silver chloride electrode or a calomel electrode. Thereby, the reference electrode can be accurately measured without being affected by the external environment or the like.

The control unit may compare the slope of the electrochemical characteristic value measured by the first measuring unit with a set value to determine a cleaning time point of the electric adsorption unit.

Thus, the cleaning time can be confirmed more reliably by comparing the data measured by the first measuring unit with various setting values.

According to the present invention, the degree of contamination of the electro-absorption module can be measured by an electrochemical method to confirm the degree of contamination.

Further, by measuring each of the plurality of measurement factors and correcting the measured value, the degree of contamination of the electro-absorption module can be measured more accurately.

Therefore, it is possible to control the cleaning of the electrode or the ion exchange layer of the electro-absorption module before the performance thereof deteriorates, so that the water treatment efficiency using the electro-absorption module can be enhanced and the reliability can be improved.

Particularly, in a system for generating and supplying a cleaning agent in the field, it is necessary to generate a direct cleaning agent in a cleaning mode or to produce the required amount of the cleaning agent appropriately. Therefore, if the degree of contamination of the electroabsorption module is accurately measured, , It is possible to perform systematic maintenance and reduce production and storage management costs.

FIG. 1 is a block diagram schematically showing an electro-absorption cleaning system to which a cleaning controller of a preferred electro-absorption module of the present invention is applied.
Fig. 2 is a schematic diagram for explaining the electroadhesive cleaning system shown in Fig. 1. Fig.
FIG. 3 is a view showing an example of the electro-absorption module shown in FIG. 2. FIG.
Fig. 4 is a view showing an electrolytic cell as the electrolytic module shown in Fig. 2. Fig.
5 to 7 are schematic views for explaining other embodiments of the electrolytic module.
FIG. 8 is a schematic structural view showing an electro-absorption cleaning system according to a second embodiment of the present invention.
FIG. 9 is a schematic diagram showing an electro-absorption cleaning system according to a third embodiment of the present invention.
10 is a schematic configuration diagram showing an electro-absorption cleaning system according to a fourth embodiment of the present invention.
11 is a schematic view for explaining an electro-absorption module cleaning control apparatus according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a cleaning control apparatus for an electro-absorption module according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic block diagram showing an electro-absorption cleaning system to which a cleaning controller of an electro-absorption module according to an embodiment of the present invention is applied, and FIG. 2 is a schematic system configuration diagram.

1 and 2, the electro-absorption cleaning system includes an electro-absorption module 300 for adsorbing, desorbing and removing ionic contaminants contained in the water supplied from the water supply unit 200, 300 for generating and supplying a cleaning agent to be supplied to the cleaning agent supply unit 400 and the cleaning controller 20 of the electric adsorption module. The cleaning controller 20 of the electro-absorption module includes a control unit 500, a measurement unit 600, and a storage unit 700.

The water supply unit 200 includes a water tank 210 for receiving water to be treated, a water supply line 220 for supplying the water in the water tank 210 to the electricity absorption unit 300, a water supply line 220 And a pressurizing pump 230 installed in the pressurizing chamber. A water level sensor 211 is installed in the water tank 210. In the water supply line 220, a filter 240 for filtering impurities of the water may be installed downstream of the pressurization pump 230. In addition, a flow meter 250 and a pressure gauge 260 may be installed downstream of the filter 240 in the water supply line 220.

The water stored in the water tank 210 may include water for various purposes such as wastewater, sewage, and the like. These waters contain ionic substances that need to be removed. Since the water supply unit 200 having such a configuration does not limit the present invention, various examples are possible, and a detailed description thereof will be omitted.

3, the electro-absorption module 300 includes an anode electrode 320, a cathode electrode 330, a spacer 340, and an electrode (not shown) disposed inside the module body 310, And a power supply unit 350 for supplying power to the power supply unit 320 (330). The module main body 310 may include a water inlet 311, a cleaning agent inlet 312, a treated water outlet 313, and a concentrated liquid outlet 314, but the present invention is not limited to this configuration. That is, the module main body 310 may be configured so that one inlet and one outlet are provided, and water, cleaning agent, treated water (product water), concentrated liquid or the like may be shared by the same line through an external valve or the like. In the detailed description of the present invention, the water inflow port 311, the cleaning agent inflow port 312, the treated water outlet port 313, and the concentrated liquid outlet port 314 will be described. The anode electrode 320 and the cathode electrode 330 may have a plurality of the anode electrode 320 and the cathode electrode 330 alternately arranged. In this case, the plurality of anode electrodes 320 are electrically connected to each other by the anode bus bar 361, and the cathode electrodes 330 are electrically connected to each other by the cathode bus bar 363. Each of the anode and cathode electrodes 320 and 330 is preferably made of porous carbon so as to effectively adsorb the ionic material contained in the water. Such a porous carbon material may be a material such as activated carbon, carbon aerogels, carbon nanotubes (CNT), carbon nanofibers (CNF), carbon fibers, carbon paper and the like.

The spacer 340 may be disposed between the anode electrode 320 and the cathode electrode 330. Such a spacer 340 may have a structure in which a mesh and a gasket are laminated. The spacer including the mesh and the gasket may be formed of a material such as PE, PP or Nylon.

Further, an ion exchange layer (not shown) may be further provided between the spacer 340 and the electrodes 320 and 330.

The power supply unit 350 supplies or short-circuits DC power to the anode electrode 320 and the cathode electrode 330, respectively.

 When the DC power is supplied to the anode electrode 320 and the cathode electrode 330, respectively, when the water is supplied from the power supply unit 350 to the module body 310, the ionic material contained in the water is electrostatically Due to the attractive force, ions with opposite charges to the electrode can be adsorbed on the surface of the electrode (including the ion exchange layer), thereby separating the ionic substances in the water.

When the charges applied to the anode electrode 320 and the cathode electrode 330 are short-circuited or the opposite charges are applied, the adsorbed ions can be desorbed and the electrode (including the ion exchange layer) can be regenerated. Through the adsorption and desorption processes, it is possible to carry out a desalting process for removing ionic substances from the solution. At this time, the adsorption process and the desorption process can be controlled by determining a period, a period, a time point, and the like by a control unit 500 that controls the operation of the power supply unit 350.

In addition, the water from which the ionic material has been removed is stored or supplied to or discharged from the production water reservoir 270 or the production water line. Conversely, the concentrated liquid containing the ionic material desorbed from the electrode through the desorption process is treated with the concentrated liquid through the concentrated liquid outlet 314, or moved to the cleaning agent generating and supplying unit 400 when the generation of the cleaning agent is required.

The detergent generating and supplying unit 400 preferably generates a detergent (including an acidic solution and an alkaline solution) using the concentrated liquid generated in the desorption process in the electro-adsorption module 300, To the electroacoustic adsorption module 300. In this case, Herein, the detergent generating and supplying unit 400 may include an electrolytic module, and the electrolytic bath 410 as shown in FIG. 4 may be applied to the first embodiment of the electrolytic module.

The electrolytic bath 410 may include an anode electrode 411 and a cathode electrode 412 and a diaphragm 413 separating the anode and the cathode with the two electrodes 411 and 412 sandwiched therebetween.

According to this configuration, the concentrated liquid supply line can be connected to the anode electrode 411 and the cathode electrode 412 so that the concentrated liquid can be simultaneously supplied to the anode electrode 411 and the cathode electrode 412, respectively.

Also, the concentrated water is supplied to the anode electrode 411, and the produced water having the raw water or desalted water is supplied to the cathode electrode 412. According to this configuration, in the section in which the anode electrode 411 is located, the acid solution is generated through the anode electrode reaction. In the region where the cathode electrode 412 is located, the alkaline solution is produced through the cathode electrode reaction. Specific electrode reactions are as follows.

Anode electrode reaction: H ₂ O -> 2H ⁺ + 1 / 2O ₂ (g) + 2e ^-

Cathode electrode reaction: 2H ₂ O + 2e ^- -> 2OH ^- + H ₂ (g)

Overall reaction: H ₂ O + MX -> HX (anode region) + MOH (cathode region)

The electrode reaction in which oxygen (O ₂ ) and hydrogen ions (H ⁺ ) are generated by the decomposition of water (H ₂ O) is performed at the anode electrode 411, And the cation (M ⁺ ) of the salt MX solution is moved to the region where the cathode electrode 412 is located through the diaphragm and the water (M ⁺ ) is discharged from the cathode electrode 412 H ₂ O) of hydrogen generated through decomposition (H ₂₎ and hydroxide ions (OH ^-) of the hydroxyl ion (OH ^-) and meet and generates an alkaline solution (MOH).

The salt (MX) cation (M ⁺⁾ in the solution is ^{Na +, K +, Ca 2+} , may be such as alkali metal or alkaline earth metal such as Mg ^2+, anions (X ^-) are Cl ^-, NO ₃ ^- , CO ₃ ^2- , SO ₄ ^2- , PO ₄ ^3-, and the like.

In addition, it is appropriate that the supply of hydrogen gas generated at the negative electrode reaction in the anode electrode 411 blocks as described above, so that the acid solution is produced in the anode electrode 411 (hydrogen anode reaction: H ₂ -> 2H ⁺ + 2e ^- ). The hydrogen anodic reaction can be performed at a lower potential than the water decomposition reaction, so that the power consumption can be reduced and the side reactions due to the additional anodic reaction can be minimized. To this end, a hydrogen gas supply line 415 for supplying hydrogen gas generated by the cathode electrode reaction to the anode compartment is further provided.

It is preferable to separately configure a separate gas-liquid separator 414 so as to separate the hydrogen gas and the alkali solution generated through the cathode electrode reaction and supply only the hydrogen gas to the hydrogen gas supply line 415. The gas-liquid separating means 414 may be a gas-liquid separating means of various types such as a cyclone separator, a hydrophobic separating membrane, and a natural gas in-tank type. In the present invention, the gas-liquid separating means is not limited to the gas- Any one of them can be applied.

The anode electrode 411 is preferably a gas diffusion electrode through which hydrogen can be permeated. In this case, the supply of hydrogen is directly supplied to the reaction surface of the anode electrode through one side of the gas diffusion electrode, .

5, the water-decomposing electrodialyzer 420 may be applied as the electrolytic module according to the second embodiment. The water-decomposable electrodialyzer 420 includes an anode 421 and a cathode 422 and an amphoteric ion-exchange membrane 423 and an anion-exchange membrane 424 alternately arranged between the two electrodes 421 and 422 Lt; / RTI > According to this configuration, the acidic solution and the alkaline solution can be produced in different compartments by utilizing the selective permeability of ions of the anion exchange membrane 424 and the water decomposition characteristic of the amphoteric ion exchange membrane 423.

6, the water-decomposing electrodialyzer 430 may be applied as the electrolytic module according to the third embodiment of the detergent generating and supplying unit 400. As shown in FIG. The water decomposition electrodialyzer 430 includes an amphoteric ion exchange membrane 433 and a cation exchange membrane 434 which are disposed alternately between the anode electrode 431 and the cathode electrode 432 and between the two electrodes 431 and 432. According to this configuration, the acidic solution and the alkaline solution can be produced in different compartments using the selective permeability of ions of the cation-exchange membrane 434 and the water decomposition characteristics of the amphoteric ion-exchange membrane 433.

7, the water electrolysis electrodialyzer 440 may be applied to the electrolytic module according to the fourth embodiment of the cleaning agent generating and supplying unit 400. [ The water-decomposing electrodialyzer 440 includes an ampholytic ion exchange membrane 443, a cation exchange membrane 445, and an anion exchange membrane 445, which are alternately disposed between the anode 441 and the cathode 442 and between the electrodes 441 and 442, 444). According to this configuration, an acidic solution is generated in the compartment between the amphoteric ion-exchange membrane 443 and the anion-exchange membrane 444, and an alkaline solution is generated in the compartment between the amphoteric ion-exchange membrane 443 and the cation- .

A common electrolysis process in each of the electrolytic modules described with reference to FIGS. 5 to 7 will be briefly described below.

In the water-decomposing electrodialyzing baths 420, 430 and 440, the ampholytic ion selective membranes 423, 433, and 443 are disposed such that the anion selective layer is opposed to the side faces of the anode electrodes 421, 431 and 441 and the cation selective layer is opposed to the side faces of the cathode electrodes 422, do. H ₂ O is decomposed in the amphoteric ion exchange membranes 423, 433, 443 when the DC power is supplied to the positive electrode and the negative electrode, and hydroxide ions (OH ^- ) are supplied to the sides of the anode electrodes 421, 431, 441 through the anion- And hydrogen ion (H ⁺ ) is generated through the cation selective layer at the side of the cathode electrodes 422, 432, and 442. At this time, the acidic solution (HX) and the alkali solution (MOH) are produced with the salt (MX) supplied from the concentrate. The concentrate containing the salt MX is supplied to one side chamber of the ion exchange membrane to permeate the cation M ⁺ through the cation exchange membranes 434 and 445 and the anion X ^- through the anion exchange membranes 424 and 444 (HX) and alkali solution (MOH) in each of the other compartments.

5, the concentrate containing the salt MX is supplied to the compartment adjacent to the anion-selective layer of the anion-exchange membrane 424 and the amphoteric-ion-selective membrane 423 to be formed into the anion-selective layer of the amphoteric ion-exchange membrane 423 from the hydroxide ions (OH ^-) anion (X ^-) of the cation (M ⁺⁾ of the salt (MX) is met generate alkaline solutions (MOH), and salt (MX) is a different compartment through the anion exchange membrane 424 (H ⁺ ) generated in the other compartment through the cation-selective layer of the amphoteric ion-exchange membrane 423, and an acidic solution HX is generated. 6, the concentrate containing the salt MX is supplied to the compartments adjacent to the cation-selective membrane 434 and the cation-selective membrane 431 of the amphoteric ion-exchange membrane 433, and in FIG. 7, the cation-exchange membrane 445 and the anion- (HX) and an alkali solution (HX) in a separate compartment according to the selective permeability of the ion exchange membrane and the water decomposition characteristics of the amphoteric ion exchange membrane as detailed in FIG. 5, (MOH).

The cation (M ⁺ ) of the salt (MX) solution displayed in each electrolysis process may be an alkali metal or an alkaline earth metal such as Na ⁺ , K ⁺ , Ca ²⁺ , Mg ²⁺ and the like and the anion X ^{- -} , NO ₃ ^- , CO ₃ ^2- , SO ₄ ^2- , PO ₄ ^3-, and the like.

2, the acidic solution and the alkaline solution, that is, the cleaning agent, generated by various electrolytic modules (methods) as described above are supplied to the electro-absorption unit 300 through the cleaning agent supply line 402, .

8, according to the electroadhesive cleaning system 100 'according to the second embodiment of the present invention, each of the acidic cleaning agent and the alkali cleaning agent generated in the cleaning agent generating and supplying unit 400' A cleaning agent reservoir tank 403 and a cathode tank 404 and a cleaning agent stored in each of the anode tank 403 and the cathode tank 404 are pumped to a cleaning agent supply line 402 so as to be supplied to the electric adsorption unit 300 And may further include infusion pumps 405 for supplying infusion pumps. In this case, the concentrated liquid from the electro-absorption unit 300 is directly supplied to the cleaning agent generating and supplying unit 400 'to generate and store an acidic and alkaline solution by electrolysis.

The acidic and alkaline solution stored in each of the anode tank 403 and the cathode tank 404 may be circulated to the circulation pumps 406. [ In this case, the concentrated liquid is directly supplied to and stored in each of the anode tank 403 and the cathode tank 404, and then the electrolytic modules 410, 420, 430, and 440 are operated and the concentrate is circulated to the circulating pump 406, (404) Each of the concentrated liquids can be generated and stored as an acidic solution and an alkaline solution.

The circulation pumps 406 circulating in the anode tank 403 and the cathode tank 404 respectively are connected to the injection pumps 405 for injecting the cleaning agent into the electric adsorption unit 300 through the cleaning agent supply line 402, And may be configured as single pumps without being separately configured. That is, the circulation pump 406 circulating the anode tank 403 and the electrolytic modules 410, 420, 430, and 440 and the injection pump 405 supplying the acidic cleaning agent produced in the anode tank 403 to the electro- And the circulation line from the rear end of the injection pump to the electrolytic module through the branch line and the acidic solution supply line 403a are connected to perform both the circulation and the supply of the cleaning agent through the operation of each valve. The circulation of the cathode tank 404 and the supply of the alkali detergent may be configured to perform two roles in the same manner through one pump. Such a circulation method is advantageous in that it is easy to produce an acidic and alkaline solution at a target concentration, and the electric conductivity in the solution and the flow field inside the electrolytic module can be reduced, thereby reducing power consumption.

The acidic solution discharge line 407a branched at the acidic solution supply line 403a connecting the anode tank 403 and the cleaning liquid supply line 402 is connected to the concentrated liquid discharge line 408 branched at the concentrated liquid supply line 401, Lt; / RTI > The alkaline solution discharge line 407b branched from the alkaline solution supply line 404a connecting the cathode tank 404 and the cleaning liquid supply line 402 is connected to the concentrated liquid discharge line 408. [ A valve is provided in each of the discharge lines 407a and 407b.

According to this configuration, when the acidic solution cleaning agent is supplied to the electro-absorption unit 300 to perform cleaning, the cleaned acidic solution cleaning agent is discharged through the concentrated liquid discharge line 408, The alkaline solution may be supplied to the concentrated liquid discharge line 408 through the alkaline solution discharge line 407b in the tank 404 and mixed with the acidic solution after the cleaning discharged from the electrostatic adsorption unit 300 to be neutralized . Conversely, when the alkali solution is supplied to the electrostatic adsorption unit 300, the acid solution can be neutralized by mixing with the solution discharged from the adsorption unit 300 in the anode tank 403, which is a cleaning agent storage tank.

9, according to the electroadhesive cleaning system 100 "according to the third embodiment of the present invention, the cleaning agent generation and supply unit 400 " And a concentrated liquid reservoir 409 for supplying the concentrated liquid to the electrolytic modules 410, 420, 430, and 440.

The concentrated liquid stored in the concentrated liquid storage tank 409 is supplied to the electrolytic modules 410, 420, 430, and 440 through the concentrated liquid supply line 401 by a concentrated liquid injection pump 407 driven according to a control signal of the control unit 500, The cleaning agent generated by the electrolytic modules 410, 420, 430, and 440 is selectively supplied to the electroacoustic module 300 through the cleaning agent supply line 402 to perform a cleaning process, and the cleaning agent discharged after the cleaning process It is preferable to neutralize and discharge the same as in the above description. The detergent may also be recycled to the concentrate reservoir 409 or configured to be processed through a separate discharge line. Here, the concentration tank 409 may also be provided with a water level sensor and a concentrate outlet.

10, according to the electro-adsorption cleaning system 101 according to the fourth embodiment of the present invention, the detergent generating and supplying unit 1400 stores the concentrate discharged from the electro-adsorption unit 300 And an anode tank 403 and a cathode tank 404 for storing cleaning agents generated in the electrolytic modules 410, 420, 430, and 440, respectively. According to such a configuration, the concentrated liquid stored in the concentrated liquid storage tank 409 is supplied to the electrolytic modules 410, 420, 430, and 440 by driving the concentrated liquid infusion pump 407 by the control unit 500 as necessary. Then, the electrolytic modules 410, 420, 430, and 440 generate an acidic cleaning agent and an alkaline cleaning agent by an electrochemical reaction and supply and store the acidic cleaning agent and the alkaline cleaning agent to the cathode tank 403 and the cathode tank 404, respectively.

8, the concentrated liquid may be supplied to the anode tank 403 and the cathode tank 404, and the concentrated liquid supplied to the anode tank 403 and the cathode tank 404 may be supplied to the injection pump 405 430, and 440 and the anode and cathode assemblies 403 and 404, respectively, by supplying the acidic and alkaline solutions to the electrolytic modules 410, 420, 430, and 440, respectively. The cleaning agent thus generated is supplied to the electroabsorption module 300 through the cleaning agent supply line 402 to selectively clean the acidic cleaning agent or the alkaline cleaning agent and the cleaning agent discharged after the cleaning process is neutralized And then discharged. The detergent may also be recycled to the concentrate reservoir 409 or configured to be processed through a separate discharge line.

As described above, in the electroadhesive cleaning system according to the embodiment of Figs. 2 and 8 to 10, one solution (acidic solution or alkali solution) in the produced acidic and alkaline solution is supplied to the control unit 500 It is preferable that the cleaning agent is driven and controlled to clean the electro-absorption module 300, and the cleaning agent discharged after cleaning is mixed with another cleaning agent that is not used, and then discharged after being neutralized. That is, when cleaning is performed using the acidic cleaning agent through the signal of the control unit 500, the acidic cleaning agent is discharged to the concentrated acid storage tank 409 or the acid cleaning agent and the electrolytic modules 410, 420, 430, The alkali detergent may be mixed and neutralized and discharged. When cleaning is performed using the alkaline cleaning agent, it is preferable that the acidic cleaning agent generated at the same time as the discharged alkaline cleaning agent is neutralized by mixing in the concentrate reservoir 409 or another line. As described above, the cleaning agent is neutralized after being discharged and can be cleaned without generating any contaminants.

In the description of the electroadhesive cleaning system according to the embodiments of FIGS. 2 and 8 to 10, the acidic and alkaline cleaners are manufactured using the concentrate generated during the desorption process in the adsorption module, But it may be manufactured by using raw water to be introduced or production water produced after desalting or separate supply water.

The control unit 500 controls the cleaning operation period for cleaning the contaminants of the anode electrode 320 and the cathode electrode 330 of the electrostatic adsorption module 300 based on the information measured by the measuring unit 600 And the operation can be controlled.

11, the control unit 500 may measure the electrochemical signal of the electro-absorption module 300 using the measuring unit 600 to check the degree of contamination of the electrodes 320 and 330, It is possible to determine whether the cleaning operation is performed by comparing the measurement information with the set value stored in the storage unit 700. [

The measurement unit 600 includes a first measurement unit 610, a second measurement unit 620, and a third measurement unit 630.

The first measuring unit 610 measures changes in electrochemical characteristics of the electrodes 320 and 330 of the electroabsorption module 300. 11, the first measuring unit 610 may include a reference electrode 611 and a second electrode 612 between the reference electrode 611 and the cathode electrode 330, A first voltmeter 613 for measuring the voltage of the reference electrode 611 and a second voltmeter 615 for measuring the voltage between the reference electrode 611 and the anode electrode 320.

Here, the reference electrode 611 is an electrode which does not change according to an external environment, and preferably a silver-silver chloride electrode (Ag / AgCl in KCl) or a calomel electrode (Hg / HgCl ₂ in KCl) may be applied. The reference electrode 611 may be disposed at an inlet side or an outlet side of the solution passing through the inside of the electroabsorption module 300, or at any point inside the adsorption module.

The first voltmeter 613 is installed to measure the voltage between the reference electrode 611 and the cathode electrode 330. When a plurality of cathode electrodes 330 are arranged, the first voltmeter 613 may measure the voltage between the cathode bus bar 363 connected to the plurality of cathode electrodes 330 and the reference electrode 611 .

When a plurality of the anode electrodes 320 are provided, the anode bus bar 361 connecting the plurality of anode electrodes 320 is provided, and the voltage between the anode bus bar 361 and the reference electrode 611 is set to the second And may be configured to measure at voltmeter 615.

In each of the first and second voltmeters 613 and 615 installed as described above, the voltage is measured, and the measured values are transmitted to the control unit 500. When any one of the voltages measured by the first and second voltmeters 613 and 615 reaches a set value (for example, 1.5 V), the control unit 500 determines that the electrode is contaminated, As shown in FIG. In this case, it is preferable that the cleaning operation based on the abnormal signal of the first voltmeter is performed using the acidic cleaning agent, and the cleaning operation according to the abnormal signal of the second voltmeter is performed using the alkaline cleaning agent.

In addition, the control unit 500 compares the rising speed of the voltage measured in each of the first and second voltmeters 613 and 615 with the slope of the voltage value with respect to the log scale current, The cleaning operation may be determined.

The first measurement unit 610 may be provided to determine whether the electrode is contaminated according to the change in voltage between the reference electrode 611, the cathode electrode 330 and the anode electrode 320, The cleaning operation can be performed before the performance of the electrodes 320 and 330 is deteriorated. Therefore, the efficiency of the electro-absorption module 300 can be effectively maintained.

In addition, it is preferable that at least one of the second and third measuring units 620 and 630 is further provided so as to increase the accuracy of measurement by correcting the measured value measured by the first measuring unit 610.

The second measuring unit 620 includes a first sensor 621 installed on a line of an inlet port through which the water of the electrical adsorption module 300 flows or on a water inlet side of the electrical adsorption module 300. The electrochemical characteristic signal sensed by the first sensor 621 is transmitted to the control unit 500.

The control unit 500 transmits information sensed by the first sensor 621 to the corrector 520. The corrector 520 reflects the electrochemical characteristic values sensed by the first sensor 621, And compensates the measurement value measured at the part 610. The corrected measured value is transmitted to the controller 510. The controller 510 compares the corrected measured value with the set value to check the degree of contamination more accurately, and determines whether the measured value is cleaned.

The third measuring unit 630 includes a second sensor 631 installed on a line of the outflow port through which the water of the electrostatic adsorption module 300 flows or on a water outflow side inside the electrostatic adsorption module 300 . The second sensor 631 senses an electrochemical characteristic signal of the desalted production water (treated water) or the concentrated liquid discharged through desorption through the adsorption in the electro-absorption module 300, and transmits the electrochemical characteristic signal to the control unit 500. The correcting unit 520 corrects the measured value of the first measuring unit 610 through the information sensed by the second sensor 631 and compares the corrected information with the set value through the control unit 510, And determines whether or not it is cleaned.

Here, the second measurement unit 620 and the third measurement unit 630 may be constituted by only one, or both of the measurement units 620 and 630 may be configured, and information of the inflow and outflow, 1 measuring unit 620 so as to determine whether or not to perform cleaning.

At this time, the electrochemical characteristic signals measured by the second measuring unit 620 and the third measuring unit 630 are configured to use at least one of the electrochemical signal values such as conductivity, ORP, and pH of the water .

Further, although not shown, the measuring unit 600 may further include a differential pressure sensor for measuring the differential pressure at the inlet side and the outlet side of the solution of the adsorption module 300.

As described above, the measuring unit 600 applies at least two or more of the first measuring unit 610 and the plurality of measuring units 620 and 630 described above to measure the cleaning time based on a plurality of different measurement factors It may be determined more accurately. As described above, the measuring unit 600 senses an electrochemical signal in the electroabsorption module 300 by applying various sensors, and when the sensed information reaches the set value, the control unit 500 controls the electrode It is determined that the cleaning agent is contaminated and the cleaning agent generating and supplying unit 400 is driven and controlled to supply the cleaning agent to the electroabsorption module 300 to perform the cleaning operation.

While the present invention has been described above with reference to a configuration in which a cleaning agent is generated and supplied at the site by controlling the cleaning agent generating and supplying unit 400, Should be understood to be natural.

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. Those skilled in the art will readily appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims.

100, 100, 100, 101 .. Electrophoresis cleaning system 200 .. Water supply unit
210 .. Water tank 230 .. Pressure pump
300 .. Electroabsorption module 310 .. Module body
320 .. anode electrode 330 .. cathode electrode
340 .. Spacer 350 .. Power supply
361 .. anode bus bar 363 .. cathode bus bar
400, 400 ', 400 ", 1400 .. cleaning agent generating and supplying unit 410 .. electrolyzer
420,430,440 .. Water decomposition electrodialysis tank
500 .. Control unit 600 .. Measuring unit
610 .. First measuring part 620 .. Second measuring part
630 .. Third measuring part 611 .. Reference electrode
613 .. first voltmeter 615 .. second voltmeter
510 control unit 520 calibration unit
700 .. Storage

Claims (6)

A measuring unit for detecting the contamination state of the electro-absorption module for adsorbing ionic contaminants contained in the water supplied from the water supply unit to the electrode and desorbing and removing the adsorbed ionic contaminant by an electrochemical signal;
And a control unit for controlling the cleaning agent supply unit to supply the cleaning agent to the electrostatic adsorption module according to a result of the determination,
Wherein the measuring unit comprises:
And a first measuring unit for measuring a change in electrochemical characteristics with respect to the positive electrode and the negative electrode of the electroabsorption module,
Wherein the measuring unit comprises:
A second measuring unit for measuring an electrochemical characteristic of the water on the inlet side at the inlet of the water of the electro-absorption module; And a third measuring unit for measuring an electrochemical characteristic of the effluent water at the water outlet of the electro-absorption module; Wherein the at least one of the first electrode and the second electrode is formed on the second electrode. The method according to claim 1,
Wherein the control unit comprises:
And determining whether the electro-absorption module is to be cleaned by correcting the measured value measured by the first measuring unit using data measured in the second measuring unit or the third measuring unit or a change in the measured data, A cleaning control device of an electro-absorption module. 3. The method of claim 2,
Wherein the electrochemical characteristic signal measured by the second measuring unit and the third measuring unit is at least one of a conductivity value, an ORP value, and a pH value of the water. 4. The method according to any one of claims 1 to 3,
The electro-
A module main body having a water inlet and a water outlet; and an anode electrode and a cathode electrode disposed inside the module body so as to face each other,
Wherein the first measuring unit comprises:
A reference electrode disposed at either one of the water inlet and the outlet side or the inside of the adsorption module;
And a first voltmeter for measuring a voltage between the reference electrode and the cathode electrode,
Wherein the control unit compares the voltage measured in the first voltmeter with a set value to determine whether the cleaning operation is performed. 5. The method of claim 4,
Wherein the reference electrode comprises a silver-silver chloride electrode or a calomel electrode. 5. The method of claim 4,
Wherein the control unit compares the slope of the electrochemical characteristic signal measured by the first measuring unit with a set value to determine a cleaning time of the electrostatic adsorption unit.

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