KR101965784B1 - Water treatment system using deionization - Google Patents

Abstract

The present invention relates to a water purification treating system using a deionization method, and a water purification treating method using the same. The water purification treating system of the present invention comprises: a deionizing filtration module including a pair of electrodes for adsorbing an ion filtering material contained in a treated water by a supplied water purification voltage in a water purification mode, and desorbing the adsorbed ion filtering material by a supplied regeneration voltage in a regeneration mode; a power module for supplying power to the deionizing filtration module; and a control unit for controlling application to the electrodes of the deionizing filtration module and polarity to control the deionizing filtration module to perform the water purification mode or regeneration mode. The water purification mode and the regeneration mode are determined by changing the polarity of voltage applied to each of the electrodes. According to the present invention, a water purification voltage is supplied through a power module in the water purification mode, and a charging voltage of a storage module charged in the water purification mode is supplied in the regeneration mode to be used as a regeneration voltage, thereby saving electric energy, and reducing energy costs therethrough. Also, the regeneration voltage is formed to be gradually reduced by characteristics of gradually reducing voltage intensity discharged from the storage module, thereby preventing ion materials from being adsorbed again to each of the electrodes in the regeneration mode to improve regeneration efficiency.

Description

[0001] Water treatment system using deionization [0002]

The present invention relates to a water treatment system using a deionization system and a water treatment method using the same, and more particularly, to a water treatment system using a deionization system capable of reducing energy consumption, And a method for treating water using the same.

In general, water treatment devices that treat raw water to generate purified water have been developed and developed in various ways. Among them, electric deionization methods such as EDI (Electro Deionization), CEDI (Continuous Electro Deionization) and CDI (Capacitive Deionization) Recently, research on a capacitive deionization (CDI) method, which is a storage deionization method, has been actively conducted.

Meanwhile, in the CDI method, ions (contaminants) are removed using the principle that ions are adsorbed and desorbed from the surface of the electrodes by an electric force. As shown in FIG. 1, voltages are applied to the positive and negative electrodes When the treated water containing ions is passed between the anode and the cathode, the anion moves to the anode and the cation moves to the cathode, so that the adsorption of the ionic filtration material (1) occurs at each electrode, Thereby removing the ionic filtration material. However, when the electrode continuously adsorbs the ionic filtration material, the electrode reaches a saturation state in which the ionic filtration material can no longer be adsorbed. When this state is reached, as shown in FIG. 2, An opposite voltage is applied to each electrode to desorb ionic filtration materials adsorbed on each electrode, thereby regenerating the electrode again.

However, in the conventional water treatment system using the storage deionization system, a large amount of electric energy is required to maintain the purification mode for filtering through ion adsorption and the regeneration mode for regeneration of the electrode, There is a problem that control for preventing re-adsorption by reverse ionization in the regeneration mode is difficult and regeneration efficiency is deteriorated.

Korean Patent Publication No. 10-0507265

An object of the present invention is to provide a water treatment system using a storage type deionization system capable of reducing energy cost, easily controlling a regeneration mode and improving regeneration efficiency, and a water treatment method using the same.

To this end, the present invention is characterized in that in the purification mode, a pair of electrodes for adsorbing the ion filtering substance contained in the treated water by the supplied constant voltage and desorbing the ion filtering substance adsorbed by the supplied regeneration voltage in the regeneration mode A deionization module including a deionization module; A power module for supplying power to the deionization filtration module; And a control unit controlling the presence or absence of the application and the polarity of the deionized filtration module so that the deionization filtration module performs an integer mode or a regeneration mode, And the polarity of the voltage applied to the pair is changed.

At this time, a plurality of deionization filtration modules are provided; The plurality of deionization filtration modules are grouped and separated; At least one of the other deionization filtration module groups can be controlled to perform the regeneration mode when the deionization filtration module of any one group performs the integral mode.

And a power storage module connected to the power module to charge the power supply in the constant mode and to charge the regenerative voltage to the deionization filtration module using the power charged in the regeneration mode, And the like.

In addition, the power storage module may include one or more each of the deionization filtration module groups.

In addition, the power storage module may be formed such that the discharged voltage gradually decreases and the regenerative voltage gradually decreases.

Also, the controller may control an electrical connection state of the power module, the deionization filtration module, and the power storage module according to the integer mode and the reproduction mode.

The deionization filtration module and the power storage module may be connected in parallel by the switch unit.

In addition, the switch unit may supply the constant voltage from the power module to the deionization filtering module and the power storage module in the constant mode; In the regeneration mode, the regeneration voltage may be supplied to the deionization filtration module from the power charged in the power storage module.

The control unit may control the switch unit to supply power to the power storage module after a predetermined delay time (t) at the time of mode conversion from the regeneration mode to the constant mode.

In addition, the deionization filtration module and the power storage module may be connected in series.

The control unit may further include regeneration measuring means for detecting a mode change time of the deionization filtration module, And the control unit may control the switch unit by a signal received from the reproduction measuring unit.

And the regeneration timing is formed at the set retention time of the constant mode, and the regeneration measurement means may be a timer for measuring the retention time of the constant mode.

On the other hand, the regeneration timing is formed at a predetermined ion concentration of the treated water discharged in the constant mode, and the regeneration measuring means may be an ion measuring sensor for measuring an ion concentration of the treated water discharged in the constant water mode .

The present invention controls the power module to supply the constant voltage to the first deionization filtration module and the first power storage module to cause the first deionization filtration module to adsorb the ion filtration material, Causing the power storage module to be charged with voltage so that the first deionization filtration module enters the constant mode; The first deionization filtration module controls the power module to shut off the supply of the constant voltage to the second deionization filtration module and the second power storage module when the first deionization filtration module enters the constant mode, And discharges the charged electricity in the second power storage module to gradually decrease so that the regeneration voltage is gradually reduced to the second deionization filtration module so that the second deionization filtration module is in the regeneration mode step; The first deionization filtration module controls the power module to cut off the supply of the constant voltage to the first deionization filtration module and the second power storage module when the first deionization filtration module is regenerated, And discharges the charged electricity in the first power storage module so that the voltage gradually decreases to gradually decrease the regeneration voltage to the first deionization filtration module so that the first deionization filtration module is switched to the regeneration mode ; And controlling the power module to supply the constant voltage to the second deionization filtration module and the second power storage module when the first deionization filtration module is in the regeneration mode, And causing the second power storage module to be charged with a voltage to cause the second deionization filtration module to switch to the constant mode by causing the second power storage module to adsorb the filtration material.

The water treatment system using the storage deionization system and the water treatment method using the same according to the present invention provide the following effects.

First, in the integer mode, the constant voltage is supplied through the power module. In the regeneration mode, the charging voltage of the power storage module charged in the constant mode mode is supplied instead of the external power, Thereby reducing energy costs.

Secondly, by gradually reducing the regeneration voltage gradually by using the characteristic that the voltage intensity discharged from the power storage module gradually decreases, the regeneration efficiency can be improved by effectively preventing re-adsorption of the ion filtering materials to the electrode in the regeneration mode.

Third, since the discharge voltage of the power storage module gradually decreases according to the amount of charge, the regeneration voltage is supplied without the necessity of separate voltage control. Therefore, the regeneration mode control .

Fourth, the entire system including the constant mode and the regenerative mode and the structure thereof are simple and easy to manufacture and economical.

FIG. 1 and FIG. 2 are views showing an integer mode and a regeneration mode in a general condensation type deionization system, respectively.
3 is a configuration diagram showing the configuration of a water purification system using a storage deionization system according to an embodiment of the present invention.
FIG. 4 is a block diagram showing a configuration of a water purification system using a storage deionization system according to another embodiment of the present invention.
5 is a configuration diagram showing the configuration of a water purification system using a storage deionization system according to another embodiment of the present invention.
6 is a block diagram showing the configuration of a control unit of the water purification system according to the present invention.
FIG. 7 is an exemplary view showing an operation mode of a water purification system using a storage deionization system according to another embodiment of the present invention.
FIG. 8 is an exemplary view showing another operation mode of a water purification system using a storage deionization system according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3, a water treatment system using a storage deionization system according to an embodiment of the present invention (hereinafter referred to as a "water treatment system") includes a deionization filtration module 100, a power module 200, A control unit 200, and a power storage module 300.

The deionization and filtration module 100 includes a pair of electrodes 110 and 120 which are disposed apart from each other in a pair and through which the process water flows. The deionization filtration module 100 includes a pair of electrodes 110 and 120 spaced apart from each other with a space through which process water can pass, and the electrodes 110 and 120. The deionized filtration module 100 receives the treated water, And a filter module using a well-known deionization method can be applied. Therefore, a detailed description thereof will be omitted.

When the constant voltage is applied to the pair of electrodes 110 and 120, the deionization filtration module 100 adsorbs the ion filtering material contained in the treated water to the surfaces of the electrodes 110 and 120, Mode is proceeded.

In addition, the deionization filtration module 100 has an excessively accumulated ion filtering material on the surfaces of the electrodes 110 and 120 as the constant mode is maintained, and when the saturated filtering fluid is saturated, the purification effect is reduced. . Here, unlike the integer mode, the regeneration mode is performed by applying a regenerating voltage to the electrodes 110 and 120 after the polarities of the electrodes 110 and 120 are different, so that the ion filtering material adsorbed on the surfaces of the electrodes 110 and 120 is desorbed, (Regeneration mode) is performed.

The power module 200 is a part for supplying power through the power supply line 201. The power module 200 can be an external power source that receives power from a known external source or a power source that can generate its own power by self- And a detailed description thereof will be omitted.

The control unit 400 selectively supplies the power provided from the power module 200 to the deionization filtering module 100 and the power storage module 300 according to the operation state of the water purification system according to the present invention And a switch unit 420 for controlling the electrical connection for this purpose. This will be described in detail later.

The power storage module 300 is disposed in parallel with the deionization filtering module 100 with respect to the power supply module 200. The power storage module 300 is connected to the pair of electrodes 110 and 120 of the power supply module 200 and the deionization filtration module 100 to receive a voltage from the power supply module 200 in the constant mode In the regeneration mode, the regeneration voltage is supplied by discharging the voltage charged to the deionization filtration module 100.

Meanwhile, when the voltage charged in the deionization filtration module 100 is discharged for a predetermined time in the absence of the voltage supply of the power module 200, the power storage module 300 gradually consumes the charged voltage The discharged voltage intensity gradually decreases. As a result, the regeneration voltage supplied to the deionization filtration module 100 is also gradually reduced, so that it is possible to effectively prevent the ion filtering materials from being adsorbed to the electrodes 110 and 120 in the regeneration mode, thereby improving the regeneration efficiency .

That is, in the above-described regeneration mode, the ion filtering material adsorbed due to the regeneration voltage is initially desorbed. However, when the ion filtering material desorbs on the surface of the electrodes 110 and 120 after the regeneration time has elapsed to some extent, The ion filtering material having the polarity corresponding thereto is again adsorbed on the surfaces of the electrodes 110 and 120. Therefore, it is necessary to control the regeneration voltage separately in the regeneration mode so that the ion filtering material is not re-adsorbed to the electrodes 110 and 120 in such a regeneration mode.

However, as described above, since the intensity of the regeneration voltage gradually decreases in the power storage module 300 in the state where the voltage is not supplied from the outside, the water treatment system does not require the control of the difficult regeneration voltage It is easy to control and maintain without needing separate voltage control.

The power storage module 300 includes a capacitor and receives power from the control unit 400 through the charge / discharge line 301. The power storage module 300 is connected to the deionization filtration module 100 ).

That is, the capacitor is charged with the power supplied from the power module 200, and discharges the charged power to the deionization filtration module 100 with the regeneration voltage.

The capacitor may be a device for collecting known charges as a capacitor, and a detailed description thereof will be omitted. The capacitor can be designed by adjusting the capacity of the deionization filtration module 100 in consideration of the capacity of the deionization filtration module 100 and the intensity of the regeneration voltage in the regeneration mode.

The charge / discharge line 301 electrically connects the capacitor and the control unit 400 to supply the voltage to the control unit 400 to be charged.

6, the control unit 400 includes the switch unit 420. The control unit 400 selectively connects the flow of power corresponding to the integer mode and the playback mode, / Block the role.

That is, the control unit 400 provides the power provided from the power module 200 to the charging module 300 and the deionization filtering module 100 in the constant mode through the switch unit 320, The power input from the power module 200 is blocked and the circuit connection is controlled so that the power charged in the charging module 300 is supplied to the deionization filtering module 100.

The control unit 400 includes a regeneration measuring unit 410 for detecting the regeneration timing of the deionization filtration module 100. Herein, the playback timing may be set to a set time of the integer mode. In this case, the playback measurement unit 410 may be a timer for measuring the duration of the integer mode.

Alternatively, the regeneration timing may be set to a predetermined ion concentration of the treated water discharged in the constant mode. In this case, the regeneration measuring means 410 may measure the ion concentration of the treated water discharged in the constant- Ion measurement sensor.

Alternatively, the regeneration timing may take into consideration both the integer mode holding time and the information on the ion concentration of the treated water. In this case, the controller 400 may consider both the integer mode holding time and the ion concentration of the treated water When the ion concentration of the treated water falls within the set range after the set constant-mode holding time is reached, control is performed so that the integer mode and the regeneration mode can be switched.

That is, the control unit 400 controls the switch unit 420 according to the result determined by the reproduction measuring unit 410 to convert the power supply state for the reproduction mode and the integer mode.

Meanwhile, in order to use the power provided from the power module 200 as efficiently as possible, the controller 400 according to the present invention controls the operation of the charging module 300 until power is applied to the charging module 300 It is also possible to set the delay time t.

In other words, when the amount of current of the water purification system according to the present invention is considered, the adsorption efficiency of the deionization filtration module 100 is high at the initial stage when the water purification mode is executed.

Thereafter, the ion material is gradually adsorbed on the electrode pair 110 and 120, thereby reducing the amount of current.

Meanwhile, the charging module 300 is a part for supplying power after the regeneration mode conversion, and it is sufficient that the charging module 300 is fully charged irrespective of the period during which the constant mode is being executed.

Therefore, in the early stage of the execution of the integer mode in which the power consumption of the deionization filtration module 100 is high, the power to the charge module 300 is supplied to the deionization filtration module 100 so that all of the power of the power module 200 is supplied to the deionization filtration module 100. [ The supply of power from the power module 200 to the constant-mode display unit 200 is stopped when the power is reduced to a predetermined value after the power consumption of the deionization filtering module 100 is lowered after a predetermined period of time. So that it can be efficiently used throughout.

Meanwhile, FIG. 4 is a configuration diagram illustrating the configuration of a water purification system using a storage deionization system according to another embodiment of the present invention.

4, in another embodiment of the present invention, the power module 200, the power storage module 300, and the deionization filtration module 100 are sequentially connected in series via the controller 400 have.

In this case, in the water purification system, an integer voltage from the power supply module 200 is applied to the deionization filtration module 100 via the power storage module 300, The purification process in the deionization filtration module 100 is performed at the same time.

On the other hand, in the water treatment system, when the power supply of the power module 200 is stopped in the regeneration mode and the electric power charged from the power module 300 is supplied to the deionization filtration module 100 in the constant mode and the polarity of the end And a regeneration process in the deionization filtration module 100 is performed.

In the above case, the water treatment system is determined according to whether the power supply to the control unit 400 is interrupted or not to switch between the integer mode and the regeneration mode. That is, the controller 400 selectively interrupts and supplies power to the power module 200 to select the constant mode and the regeneration mode.

According to the above description, the water treatment system can improve the configuration of the control unit 400, and the electrical connection structure between the power storage module 300 and the deionization filtration module 100 is simple, .

5 shows an example of the configuration of an actual facility according to the present invention.

As shown in the figure, the actual water treatment system according to the present invention comprises a plurality of deionization filtration modules 100 to maintain a certain amount of purified water.

That is, in the actual water purification system, even when a part of the deionization filtration module 100 performs the regeneration mode, the other deionization filtration module 100 is configured to perform an integral mode so that a constant amount of water can be continuously produced.

In the illustrated example, there is shown an embodiment in which two deionization filtration modules 100a and 100b are installed.

That is, in the illustrated embodiment, the water treatment system includes a first deionization filtration module 100a, a second deionization filtration module 100b, a power module 200, a first power storage module 300a, A power storage module 300b, and a control unit 400. [

The above-described water treatment system can perform a continuous integer of the treated water by cross-operating the first deionization filtration module 100a and the second deionization filtration module 100b in the integer mode and the regeneration mode, respectively .

The first deionization filtration module 100a adsorbs the ion filtering material contained in the treated water by the applied constant voltage in the purified water mode and the ion filtering material adsorbed by the regeneration voltage applied in the regeneration mode And a pair of electrodes 110 and 120 to be detached.

The second deionization filtration module 100b is disposed in parallel with the first deionization filtration module 100a and operates in an integer mode and a regeneration mode from the second deionization filtration module 100b, And a pair of electrodes 110 and 120 that adsorb the ion filtering material in the water purification mode and desorb the ion filtering material in the regeneration mode.

Here, since the first deionization filtration module 100a and the second deionization filtration module 100b correspond to the deionization filtration module of FIG. 3, detailed description thereof will be omitted.

The power module 200 supplies the constant voltage to the first deionization filtration module 100a and the second deionization filtration module and supplies the constant voltage to the first power storage module 300a and the second power storage module 300b ) To supply the voltage.

The control unit 400 includes a switch unit 420. The control unit 400 controls the first deionization filter module 100a in the constant mode of the first deionization filtration module 100a, Voltage to apply the constant voltage to the first deionization filtering module 100a so that the constant mode is performed.

At this time, since the second deionization filtration module 100b is in the regeneration mode, the controller 400 cuts off the integral voltage applied to the second power storage module 300b and the second deionization filtration module 100b. The control unit 400 applies a regeneration voltage to the second deionization filtration module 100b using the electric power charged in the second power storage module 300b to perform the regeneration mode.

In this case, the first power storage module 300a, the first deionization filtration module 100a, the second power storage module 300b, and the second deionization filtration module 100b may be formed as shown in FIG. 4 , Or a serial connection.

The control unit 400 of the present invention may include regeneration measuring means 410 for detecting the regeneration timing of each of the first deionization filtration module 100a and the second deionization filtration module 100b, And the like. Here, the regeneration time can be set through the set time of the constant mode or the ion concentration of the process water for the first deionization filtration module 100a and the second deionization filtration module 100b, respectively, as described above And the regeneration measuring means 400 may apply a timer or an ion concentration measuring means.

Hereinafter, an integer processing method using the above-described water treatment system will be described with reference to FIGS. 7 and 8. FIG.

In the method of treating water according to the present invention, first, the first deionization filtering module 100a is set to the constant mode. The control unit 400 controls the switch unit 420 to supply the constant voltage to the first deionization filtration module 100a and the first power storage module 300a, So that the filtration module 100a adsorbs the ion filtering material and charges the first power storage module 300a.

When the first deionization filtration module 100a enters the constant mode, the second deionization filtration module 100b performs the regeneration mode so that the ion materials adsorbed to the pair of electrodes 110 and 120 are removed, .

The control unit 400 controls the switch unit 420 to shut off the supply of the constant voltage to the second deionization filtration module 100b and the second power storage module 300b, And applies the regeneration voltage to the second deionization filtration module 100b through the power charged in the module 300b.

At this time, the second power storage module 300b discharges while gradually decreasing the voltage while the charged voltage capacity decreases as the regeneration time is required, and in response to the regeneration of the regenerated power supplied to the second deionization filtration module 100b By gradually decreasing the voltage, it is possible to effectively prevent the re-adsorption of the ion filtering material in the regeneration mode, thereby improving the regeneration efficiency and eliminating the need for additional voltage control.

In the first deionization filtration module 100a, the purification mode proceeds, and in the second deionization filtration module 100b, the regeneration mode proceeds, When the regeneration time of the deionization filtration module 100a is reached, the first deionization filtration module 100a is switched to the regeneration mode, and the second deionization filtration mode is switched to the constant-flow mode so that the successive integrations proceed.

8, the control unit 400 controls the switch unit 420 to shut off the supply of the constant voltage to the first deionization filtration module 100a and the first power storage module 300a, So that the regeneration is performed in the first deionization filtration module 100a, and the voltage charged in the first power storage module 300a is discharged to supply the regeneration voltage to the first deionization filtration module 100a.

When the first deionization filtration module 100a is in the regeneration mode, the controller 400 controls the second deionization filtration module 100b and the second power storage module 300b to convert the constant voltage So that the second deionization filter module 100b adsorbs the ion filtering material and the second power storage module 300b charges the voltage.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

The present invention relates to a water treatment system using a deionization system and a water treatment method using the water treatment system. According to the present invention, an integer voltage is supplied through a power module in an integer mode, By using the charging voltage of the module as a regeneration voltage, it is possible to save electric energy, thereby reducing the energy cost. Also, since the voltage intensity discharged from the power storage module gradually decreases, the regeneration voltage gradually increases It is possible to prevent the ion material from being adsorbed to each electrode again in the regeneration mode, thereby improving the regeneration efficiency.

100: deionization filtration module 100a: first deionization filtration module
100b: second deionization filtration module 110, 120: electrode
200: power supply module 201: power supply line
300: power storage module 300a: first power storage module
300b: second power storage module 301: charge / discharge line
400: control unit 410: regeneration measuring means
420:

Claims (9)

And a pair of electrodes for adsorbing the ion filtering material contained in the treated water by the supplied constant voltage in the integer mode and desorbing the ion filtering material adsorbed by the supplied regeneration voltage in the regeneration mode, A filtration module;
A power module for supplying power to the deionization filtration module;
A control unit for controlling the deionization filtration module to perform an integer mode or a regeneration mode by controlling the presence or absence and polarity of the application to the electrode of the deionization filtration module; And
A power storage module connected to the power module and charged with a voltage in the constant mode and applying the regeneration voltage to the deionization filtration module using the power charged in the regeneration mode, Lt; / RTI >
The integer mode and the regeneration mode are determined by changing the polarity of the voltage applied to the electrode pair, respectively:
A plurality of deionization filtration modules are provided;
The plurality of deionization filtration modules are grouped and separated;
At least one of the other deionization filtration module groups is controlled to perform the regeneration mode when the deionization filtration module of one group is performing the purification mode,
The power storage module includes:
The capacity of the power storage module is determined according to the capacity of the deionization filtration module and the intensity of the regeneration voltage in the regeneration mode, and the voltage intensity to be discharged gradually decreases Wherein the regenerative voltage is configured to gradually decrease:
Wherein,
And a switch unit for controlling an electrical connection state of the power module, the deionization filtration module, and the power storage module according to the integer mode and the reproduction mode,
Wherein,
Providing a constant voltage from the power module to the deionization filtration module and the power storage module in the integer mode;
In the regeneration mode, to provide the regeneration voltage to the deionization filtration module from the power charged in the power storage module:
Wherein,
Wherein the control unit controls the switch unit to supply power to the power storage module after a predetermined delay time (t) at the time of mode conversion from the regeneration mode to the constant mode.
delete delete delete delete delete The method according to claim 1,
Wherein,
Further comprising regeneration measuring means for sensing a mode change time of the deionization filtration module;
And the control unit controls the switch unit by a signal received from the regeneration measuring unit.
8. The method of claim 7,
Wherein the playback mode driving timing is determined as a set holding time of the integer mode,
Wherein the regeneration measuring means is a timer for measuring a holding time of the constant mode.
8. The method of claim 7,
The regeneration mode driving timing is determined by the set ion concentration of the process water discharged in the integral mode;
Wherein the regeneration measuring means is an ion measurement sensor for measuring an ion concentration of the treated water discharged in the water purification mode.

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