Capacitive deionization apparatus

Abstract

The disclosed capacitive deionization apparatus may comprise: a pump; an electrode module having an input terminal connected to an output terminal of the pump; a first valve connected to the output terminal of the electrode module and configured to output, in a water purification mode, purified water output from the electrode module; a second valve configured to, in a washing mode, receive first purified water that is at least a portion of the purified water and provide the first purified water to the electrode module through the pump; and a third valve connected to the output terminal of the electrode module and configured to output wastewater output from the electrode module in the washing mode.

Description

Capacitive deionization device

[0001] This description relates to a capacitive deionization device.

[0002] Various methods for water treatment devices that process raw water to produce purified water are currently being researched and developed. Among these, electro-deionization methods such as EDI (Electro Deionization), CEDI (Continuous Electro Deionization), and CDI (Capacitive Deionization) have recently been gaining attention. In particular, research on CDI (Capacitive Deionization), a capacitive deionization method, is currently being actively conducted.

[0003] Capacitive deionization devices remove ions (pollutants) by utilizing the principle that ions are adsorbed and desorbed onto the surface of electrodes by electrical force. The operating modes of capacitive deionization devices include water purification and washing modes.

[0004] In the purification mode, raw water (water to be deionized) passes between the electrodes while voltage is applied to each electrode. At this time, negative (-) ions move to the electrode to which a positive (+) voltage is applied and positive (+) ions move to the electrode to which a negative (-) voltage is applied, and ionic substances are adsorbed at each electrode. Through this purification mode, the capacitive deionization device can remove ionic substances from the raw water to produce purified water (produced water).

[0005] If too much ionic material is adsorbed on the electrode surface, the efficiency of the water purification mode decreases. In the washing mode, no voltage may be applied to the electrodes, or a voltage opposite to that of the water purification mode may be applied to the electrodes. At this time, raw water is generally flowed between the electrodes to clean the electrode surfaces. When the washing mode is finished, purified water (produced water) can be produced again through the water purification mode.

[0006] Generally, raw water containing a large amount of ionic substances is used in the cleaning mode. Since there is not a significant difference in concentration between the ions adsorbed on the electrode surface and the ions contained in the raw water, surface cleaning may not be performed properly or the cleaning time may be prolonged.

[0007] At least one of the embodiments can provide a capacitive deionizing device that efficiently cleans the electrode surface.

[0008] At least one of the embodiments can provide a capacitive deionization device capable of operating in a series and a parallel manner.

[0009] A capacitive deionization device according to one aspect may include a pump, an electrode module having an input end connected to an output end of the pump, a first valve connected to an output end of the electrode module and outputting purified water output from the electrode module in a purification mode, a second valve receiving a first purified water which is at least a part of the purified water in a washing mode and providing it to the electrode module through the pump, and a third valve connected to an output end of the electrode module and outputting wastewater output from the electrode module in the washing mode.

[0010] The first purified water can be supplied to the electrode module through the second valve and the pump, and the electrode module is washed by the first purified water and can output the wastewater to the third valve.

[0011] The above-described capacitor deionization device may further include a fourth valve that receives raw water in the above-described purification mode and supplies it to the pump.

[0012] In the above purification mode, the raw water can be supplied to the electrode module through the fourth valve and the pump, and the electrode module can output the purified water, from which ions have been removed from the raw water, to the first valve.

[0013] In the above washing mode, the second valve and the fourth valve can be opened alternately, and the raw water and the first purified water can be supplied alternately to the electrode module.

[0014] The above-described capacitor deionization device may further include a water reservoir that stores the first water.

[0015] A capacitive deionization device according to another aspect may include a pump, a first electrode module having an input end connected to an output end of the pump, a first valve having an input end connected to an output end of the first electrode module, a second valve having an input end connected to an output end of the pump, a second electrode module having an input end connected to an output end of the first valve and an output end of the second valve, a third valve connected to an output end of the second electrode module and outputting purified water output from the second electrode module in a purification mode, a fourth valve connected to an output end of the second electrode module and outputting wastewater output from the second electrode module in a washing mode, and a fifth valve connected between an output end of the first electrode module and an input end of the fourth valve.

[0016] In the above washing mode, the second valve, the fourth valve, and the fifth valve can be opened, and the first valve and the third valve can be closed.

[0017] In the above washing mode, raw water input to the pump can be supplied to the first electrode module, wastewater output from the first electrode module can be output through the fifth valve and the fourth valve, raw water can be supplied to the second electrode module through the second valve, and wastewater output from the second electrode module can be output through the fourth valve.

[0018] In the above water purification mode, the first valve and the third valve can be opened, and the second valve, the fourth valve, and the fifth valve can be closed.

[0019] In the above purification mode, the raw water can be supplied to the first electrode module through a pump, and the first electrode module can primarily remove ions, and the water output from the first electrode module can be supplied to the second electrode module through the first valve, and the second electrode module can secondarily remove ions, and the purified water output from the second electrode module can be output through the third valve.

[0020] The above-described capacitive deionization device may further include a sixth valve that receives a first water source, which is at least a portion of the above-described water source, in the washing mode and provides it to the pump.

[0021] In the above washing mode, the second valve, the fourth valve, the fifth valve, and the sixth valve may be opened, and the first valve and the third valve may be closed.

[0022] In the above washing mode, the first purified water input to the pump can be supplied to the first electrode module, and the wastewater output from the first electrode module can be output through the fifth valve and the fourth valve, and the first purified water input to the pump can be supplied to the second electrode module through the second valve, and the wastewater output from the second electrode module can be output through the fourth valve.

[0023] The above-described capacitor deionization device may further include a sixth valve that receives raw water and supplies it to the pump.

[0024] When the ion concentration of the above raw water is less than a predetermined reference value, the second valve, the third valve, the fifth valve, and the sixth valve may be opened, and the first valve and the fourth valve may be closed.

[0025] When the ion concentration of the above raw water is greater than or equal to the above predetermined standard value, the first valve, the third valve, and the sixth valve may be opened, and the second valve, the fourth valve, and the fifth valve may be closed.

[0026] The above-described capacitor deionization device may further include a sixth valve connected between the output terminal of the second electrode module and the input terminal of the pump.

[0027] In a cleaning mode using a cleaning solution, the cleaning solution can be circulated through the pump, the first electrode module, the first valve, the second electrode module, the sixth valve, and the pump.

[0028] In a cleaning mode using a cleaning solution, the cleaning solution can be circulated to the pump, the first electrode module, the fifth valve, the sixth valve, and the pump, and the cleaning solution can be circulated to the pump, the second valve, the second electrode module, the sixth valve, and the pump.

[0029] According to at least one of the embodiments, by using purified water in the washing mode, ions can be removed more effectively.

[0030] According to at least one of the embodiments, an effective cleaning operation can be performed by providing raw water in parallel to the first and second electrode modules in a cleaning mode.

[0031] According to at least one of the embodiments, a series method or a parallel method may be operated depending on the ion concentration of the raw water.

[0032] FIG. 1 is a block diagram showing a capacitive deionization device (1000A) according to one embodiment.

[0033] FIG. 2a is a diagram conceptually illustrating the operation of the electrode module (300) in integer mode.

[0034] FIG. 2b is a diagram conceptually illustrating the operation of the electrode module (300) in cleaning mode.

[0035] FIG. 3a is a diagram showing the operation of a capacitive deionization device (1000A) in integer mode.

[0036] FIG. 3b is a diagram showing the operation of a capacitive deionization device (1000A) in a cleaning mode.

[0037] FIG. 4 is a block diagram showing a capacitive deionization device (1000B) according to another embodiment.

[0038] FIG. 5a is a diagram showing the operation of a capacitive deionization device (1000B) in a constant mode.

[0039] FIG. 5b is a diagram showing the operation of a capacitive deionization device (1000B) in a cleaning mode.

[0040] FIG. 6 is a block diagram showing a capacitive deionization device (1000C) according to another embodiment.

[0041] FIG. 7 is a block diagram showing a capacitive deionization device (1000D) according to another embodiment.

[0042] FIG. 8a is a diagram showing the operation of a capacitive deionization device (1000D) in an integer mode.

[0043] FIG. 8b is a diagram showing the operation of a capacitive deionization device (1000D) in a cleaning mode.

[0044] FIG. 9 is a block diagram showing a capacitive deionization device (1000E) according to another embodiment.

[0045] FIG. 10a is a diagram showing the operation of a capacitor deionization device (1000E) in a serial integer mode.

[0046] FIG. 10b is a diagram showing the operation of a capacitor deionization device (1000E) in a parallel integer mode.

[0047] FIG. 10c is a diagram showing the operation of a capacitive deionization device (1000E) in a cleaning mode.

[0048] FIG. 10d is a diagram showing an example of the operation of a capacitive deionization device (1000E) in a cleaning mode using a cleaning solution.

[0049] FIG. 10e is a diagram showing another example of the operation of a capacitive deionization device (1000E) in a cleaning mode using a cleaning solution.

[0050] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the invention. In order to clearly explain the invention in the drawings, parts unrelated to the explanation have been omitted, and the same reference numerals have been used for identical or similar components throughout the specification. Furthermore, in the attached drawings, some components may be exaggerated, omitted, or schematically depicted, and the size of each component does not entirely reflect its actual size.

[0051] The attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings; it should be understood that all modifications, equivalents, and substitutions included within the concept and technical scope of the present invention are included.

[0052] Terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another.

[0053] Furthermore, when a part such as a layer, membrane, region, or plate is said to be "on" or "on" another part, this includes not only the case where it is "directly above" the other part, but also the case where there is another part in between. Conversely, when a part is said to be "directly above" another part, it means that there is no other part in between. Also, being "on" or "on" a reference part means being located above or below the reference part, and does not necessarily mean being located "on" or "on" in the direction opposite to gravity.

[0054] Throughout the specification, terms such as “comprising” or “having” are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. Accordingly, when a part is said to “comprising” a certain component, unless specifically stated otherwise, this means that it may include additional components rather than excluding other components.

[0055] Additionally, throughout the specification, "planar" means when the subject part is viewed from above, and "cross-sectional" means when the cross-section obtained by vertically cutting the subject part is viewed from the side.

[0056] Furthermore, throughout the specification, when the term "connected" is used, it does not mean only that two or more components are directly connected, but may also mean that two or more components are indirectly connected through other components, that they are connected not only physically but also electrically, or that they are a single unit although referred to by different names depending on their location or function.

[0057] FIG. 1 is a block diagram showing a capacitive deionization device (1000A) according to one embodiment.

[0058] The capacitive deionizing device (1000A) can produce purified water by removing ions from raw water containing ions. "Raw water" refers to water from which ions are to be removed and may be used interchangeably with the term "water to be deionized" and may be used interchangeably with the term "salt water." Additionally, "purified water" refers to water from which ions have been removed and may be used interchangeably with the term "produced water." Throughout the specification, the phrase "removing ions" does not mean removing all ions contained in the water, but rather removing at least some of them.

[0059] As shown in FIG. 1, the capacitor deionization device (1000A) may include a plurality of valves (100_1 to 100_4), a pump (200A), an electrode module (300), a controller (400A), and a water storage unit (500).

[0060] Multiple valves (100_1 to 100_4), a pump (200A), an electrode module (300), and a water reservoir (500) can be connected to each other via a pipeline. A pipeline is a pipe through which water can pass. In the following description, when a component is described as being connected to another component, this may mean not only a case where the two components are directly connected, but also a case where they are indirectly connected through a pipeline.

[0061] A plurality of valves may include a first valve (100_1), a second valve (100_2), a third valve (100_3), and a fourth valve (100_4). The plurality of valves (100_1 to 100_4) may open or close in response to a control signal received from a controller (400A). The plurality of valves (100_1 to 100_4) may be manual, opening and closing according to human operation, but below, the description assumes that the plurality of valves (100_1 to 100_4) are electronic (automatic), opening and closing according to a control signal from the controller (400A).

[0062] Each of the multiple valves (100_1 to 100_4) may include an input terminal and an output terminal. When the multiple valves (100_1 to 100_4) are opened in response to a control signal from the controller (400A), the multiple valves (100_1 to 100_4) output water (e.g., raw water or purified water) input to the input terminal to the output terminal. And when the multiple valves (100_1 to 100_4) are closed in response to a control signal from the controller (400A), the multiple valves (100_1 to 100_4) do not output water input to the input terminal to the output terminal.

[0063] The input end of the first valve (100_1) can receive raw water, and the output end of the first valve (100_1) can be connected to a pump (200A). When the first valve (100_1) is opened by a control signal from a controller (400A), raw water can be supplied to the pump (200A).

[0064] The input terminal of the second valve (100_2) can be connected to the output terminal of the electrode module (300). The output terminal of the second valve (100_2) can output purified water, which is water from which ions have been removed by the electrode module (300). When the second valve (100_2) is opened by a control signal from the controller (400A), the second valve (100_2) can output purified water.

[0065] The input terminal of the third valve (100_3) can be connected to the output terminal of the electrode module (300). The output terminal of the third valve (100_3) can output wastewater, which is water in which ions adsorbed on the electrode module (300) have been washed. When the third valve (100_3) is opened by a control signal from the controller (400A), the third valve (100_3) can output wastewater.

[0066] The input terminal of the fourth valve (100_4) can be connected to the output terminal of the water storage tank (500). Also, the output terminal of the fourth valve (100_4) can be connected to the input terminal of the pump (200A). When the fourth valve (100_4) is opened by a control signal from the controller (400A), the purified water stored in the water storage tank (500) can be supplied to the pump (200A). The purified water supplied to the pump (200A) is used for cleaning the electrode module (300). That is, the capacitive deionization device (1000A) according to one embodiment uses purified water, rather than raw water, to remove ionic substances adsorbed on the electrode module (300).

[0067] The pump (200A) operates according to a control signal from the controller (400A) and can perform a pumping function to circulate water throughout the capacitive deionization device (1000A). The input terminal of the pump (200A) can be connected to the output terminal of the first valve (100_1) and the output terminal of the fourth valve (100_4). Also, the output terminal of the pump (200A) can be connected to the input terminal of the electrode module (300). As an example, the pump (200A) may have two input terminals, and the first input terminal of the pump (200A) may be connected to the output terminal of the first valve (100_1), and the second input terminal of the pump (200) may be connected to the output terminal of the fourth valve (100_4). As another example, the pump (200A) may have one input terminal, and the input terminal of the pump (200A) may be connected to both the output terminal of the first valve (100_1) and the output terminal of the fourth valve (100_4). The specific configuration and operation of the pump (200A) can be understood by those skilled in the art to which the embodiment belongs, so a specific description may be omitted.

[0068] The electrode module (300) includes a plurality of electrodes, and raw water or purified water may pass between the plurality of electrodes. The input end of the electrode module (300) may be connected to the output end of the pump (200A). The output end of the electrode module (300) may be connected to the input end of the second valve (100_2) and the input end of the third valve (100_3). As one example, there may be two output ends of the electrode module (300), and the first output end of the electrode module (300) may be connected to the input end of the second valve (100_2), and the second output end of the electrode module (300) may be connected to the input end of the third valve (100_3). As another example, the output terminal of the electrode module (300) may be one, and the output terminal of the electrode module (300) may be connected to both the input terminal of the second valve (100_2) and the input terminal of the third valve (100_3).

[0069] The electrode module (300) operates differently depending on the water purification mode and the cleaning mode, which will be explained with reference to FIGS. 2a and FIGS. 2b below.

[0070] FIG. 2a is a conceptual diagram showing the operation of the electrode module (300) in a water purification mode, and FIG. 2b is a conceptual diagram showing the operation of the electrode module (300) in a cleaning mode.

[0071] Referring to FIGS. 2a and 2b, the electrode module (300) may include a first electrode (310) and a second electrode (320). The first electrode (310) may be composed of multiple electrodes, but in FIGS. 2a and 2b, the first electrode (310) is conceptually represented as a single electrode. Also, the second electrode (320) may be composed of multiple electrodes, but in FIGS. 2a and 2b, the second electrode (320) is conceptually represented as a single electrode. The first electrode (310) and the second electrode face each other with a space between them, and raw water or purified water may pass between the first electrode (310) and the second electrode (320). The input terminal of the electrode module (300) may be a single input for raw water or purified water, and the output terminal of the electrode module (300) may be a single output for purified water or wastewater.

[0072] Referring to FIG. 2a, in integer mode, a positive (+) voltage may be applied to the first electrode (310) and a negative (-) voltage may be applied to the second electrode (320). The positive (+) voltage and the negative (-) voltage may be provided from a separate power supply (not shown in FIG. 1). In integer mode, the power supply may apply a positive (+) voltage and a negative (-) voltage to the first electrode (310) and the second electrode (320), respectively, in response to a control signal from the controller (400A).

[0073] In the water purification mode, raw water is input to the input terminal of the electrode module (300), and the raw water passes between the first electrode (310) and the second electrode (320). Negative (-) ions contained in the raw water can be adsorbed to the first electrode (310) to which a positive (+) voltage is applied. And positive (+) ions contained in the raw water can be adsorbed to the second electrode (320) to which a negative (-) voltage is applied. Accordingly, negative (-) ions and positive (+) ions can be removed from the raw water, and purified water can be output to the output terminal of the electrode module (300).

[0074] Referring to FIG. 2b, in the washing mode, a negative (-) voltage may be applied to the first electrode (310) and a positive (+) voltage may be applied to the second electrode (320). In the washing mode, the power supply unit provides a negative (-) voltage and a positive (+) voltage to the first electrode (310) and the second electrode (320), respectively, in response to a control signal from the controller (400A). On the other hand, unlike FIG. 2b, in the washing mode, no voltage may be applied to the first electrode (310) and the second electrode (320).

[0075] In the cleaning mode, purified water is input to the input terminal of the electrode module (300), and the purified water passes between the first electrode (310) and the second electrode (320). Negative (-) ions adsorbed on the first electrode (310) can be released from the first electrode (310) and diluted in the purified water. Positive (+) ions adsorbed on the second electrode (310) can be released from the second electrode (320) and diluted in the purified water. Accordingly, the ions adsorbed on the electrodes are cleaned, and wastewater can be discharged to the output terminal of the electrode module (300).

[0076] As such, by using purified water instead of raw water in the cleaning mode, there is a large concentration difference between the concentration of ions adsorbed on the electrode surface and the mobile concentration contained in the purified water. Accordingly, the surface cleaning of the electrodes can be performed effectively.

[0077] The controller (400A) can control the overall operation of the capacitor deionization device (1000A). The controller (400A) can generate a control signal to control the opening and closing operation of a plurality of valves (100_1 to 100_4) and can provide the generated control signal to the plurality of valves (100_1 to 100_4). In addition, the controller (400A) can generate a control signal to control the operation of the pump (200A) and the electrode module (300) and can provide the generated control signal to the pump (200A) and the electrode module (300).

[0078] The water storage tank (500) can store at least a portion of the purified water processed by the capacitive deionization device (1000A). That is, the water storage tank (500) can store all or only a portion of the purified water processed by the capacitive deionization device (1000A). The purified water stored in the water storage tank (500) is provided to the input end of the fourth valve (100_4) and used in the washing mode.

[0079] FIG. 3a is a diagram showing the operation of a capacitive deionization device (1000A) in integer mode.

[0080] In the water purification mode, the first valve (100_1) and the second valve (100_2) can be opened, and the third valve (100_3) and the fourth valve (100_4) can be closed. By the operation of the pump (200A), raw water passes through the first valve (100_1) and is supplied to the electrode module (300).

[0081] As described in FIG. 2a, in the purification mode, a positive (+) voltage may be applied to the first electrode (310) of the electrode module (300) and a negative (-) voltage may be applied to the second electrode (320) of the electrode module (300). The electrode module (300) can remove negative (-) ions and positive (+) ions from raw water to output purified water.

[0082] The integer output from the electrode module (300) can be output through the second valve (100_2), and at least some of the integer can be stored in the integer storage unit (500).

[0083] FIG. 3b is a diagram showing the operation of a capacitive deionization device (1000A) in a cleaning mode.

[0084] In washing mode, the fourth valve (100_4) and the third valve (100_3) can be opened, and the first valve (100_1) and the second valve (100_2) can be closed. By the operation of the pump (200A), the purified water stored in the purified water reservoir (500) passes through the fourth valve (100_4) and is supplied to the electrode module (300).

[0085] As described in FIG. 2b, in the washing mode, a negative (-) voltage may be applied to the first electrode (310) of the electrode module (300) and a positive (+) voltage may be applied to the second electrode (320) of the electrode module (300). Meanwhile, in the washing mode, no voltage may be applied to the first and second electrodes (310, 320) of the electrode module (300). The ions adsorbed on the first and second electrodes (310, 320) of the electrode module (300) are washed by being diluted with purified water, and the electrode module (300) can discharge wastewater.

[0086] Wastewater output from the electrode module (300) can be discharged through the third valve (100_3).

[0087] In this way, by using purified water instead of raw water in the washing mode, ions adsorbed on the first and second electrodes (310, 320) of the electrode module (300) can be removed more effectively. Also, the time required for the washing mode can be reduced, and the time saved in the washing mode can be allocated more to the water purification mode to increase overall productivity.

[0088] Meanwhile, in the washing mode, instead of using only purified water, purified water and raw water can be used alternately. In the washing mode, the fourth valve (100_4) and the first valve (100_1) can be opened alternately, and purified water and raw water can be supplied alternately to the electrode module (300).

[0089]

[0090] When the ion concentration of the raw water is high, a series method that purifies it multiple times through multiple electrode modules may be used. The following describes a series-type capacitive deionization device.

[0091] FIG. 4 is a block diagram showing a capacitive deionization device (1000B) according to another embodiment.

[0092] A capacitive deionization device (1000B) according to another embodiment may include a plurality of electrode modules and is a serial type in which raw water passes through the plurality of electrode modules sequentially in a water purification mode. In addition, the capacitive deionization device (1000B) according to another embodiment can effectively clean the plurality of electrode modules in a serial type.

[0093] As shown in FIG. 4, a capacitive deionization device (1000B) according to another embodiment may include a plurality of valves (100_2, 100_3, 100_5, 100_6, 100_7), a pump (200B), a first electrode module (300_1), a second electrode module (300_2), and a controller (400B).

[0094] Multiple valves (100_2, 100_3, 100_5, 100_6, 100_7), a pump (200B), a first electrode module (300_1), and a second electrode module (300_2) can be connected to each other through a pipeline.

[0095] A plurality of valves may include a second valve (100_2), a third valve (100_3), a fifth valve (100_5), a sixth valve (100_6), and a seventh valve (100_7). The plurality of valves (100_2, 100_3, 100_5, 100_6, 100_7) may be opened or closed in response to a control signal received from a controller (400B).

[0096] The fifth valve (100_5) can be connected between the output terminal of the first electrode module (300_1) and the input terminal of the second electrode module (300_2). The input terminal of the fifth valve (100_5) can be connected to the output terminal of the first electrode module (300_1), and the output terminal of the fifth valve (100_5) can be connected to the input terminal of the second electrode module (300_2). When the fifth valve (100_5) is opened by a control signal from the controller (400B), the raw water, which has been primarily purified by the first electrode module (300_1), is input to the second electrode module (300_2). Here, the second electrode module (300_2) can purify the raw water a second time and output it.

[0097] The input terminal of the second valve (100_2) can be connected to the output terminal of the second electrode module (300_2). The output terminal of the second valve (100_2) can output purified water, which is water from which ions have been removed by the second electrode module (300_2). When the second valve (100_2) is opened by a control signal from the controller (400B), the second valve (100_2) can output purified water.

[0098] The input terminal of the third valve (100_3) can be connected to the output terminal of the second electrode module (300_2) and the output terminal of the seventh valve (100_7). Also, the output terminal of the third valve (100_3) can output wastewater, which is water in which ions adsorbed on the first and second electrode modules (300_1, 300_2) have been washed. When the third valve (100_3) is opened by a control signal from the controller (400B), the third valve (100_3) can output wastewater.

[0099] The input end of the sixth valve (100_6) can be connected to the output end of the pump (200B), and the output end of the sixth valve (100_6) can be connected to the input end of the second electrode module (300_2). When the sixth valve (100_6) is opened by a control signal from the controller (400B), raw water can also be supplied to the second electrode module (300_2). Here, the second electrode module (300_2) can be washed by the raw water supplied from the sixth valve (100_6).

[0100] The input terminal of the seventh valve (100_7) is connected to the output terminal of the first electrode module (300_1), and the output terminal of the seventh valve (100_7) can be connected to the input terminal of the third valve (100_3). When the seventh valve (100_7) is opened by a control signal from the controller (400B), wastewater washed in the first electrode module (300_1) can be output through the seventh valve (100_7) and the third valve (100_3).

[0101] The pump (200B) operates according to a control signal from the controller (400B) and can perform a pumping function to circulate water throughout the entire capacitive deionization device (1000B). Raw water can be input to the input terminal of the pump (200B). Also, the output terminal of the pump (200B) can be connected to the input terminal of the first electrode module (300_1) and the input terminal of the sixth valve (100_6). As an example, the pump (200B) may have two output terminals, and the first output terminal of the pump (200B) may be connected to the input terminal of the first electrode module (300_1), and the second output terminal of the pump (200B) may be connected to the input terminal of the sixth valve (100_6). As another example, the pump (200B) may have one output terminal, and the output terminal of the pump (200B) may be connected to both the input terminal of the first electrode module (300_1) and the input terminal of the sixth valve (100_6).

[0102] The input terminal of the first electrode module (300_1) can be connected to the output terminal of the pump (200B). Also, the output terminal of the first electrode module (300_1) can be connected to the input terminal of the fifth valve (100_5) and the input terminal of the seventh valve (100_7). As an example, there may be two output terminals of the first electrode module (300_1), and the first output terminal of the first electrode module (300_1) can be connected to the input terminal of the fifth valve (100_5), and the second output terminal of the first electrode module (300_1) can be connected to the input terminal of the seventh valve (100_7). As another example, the output terminal of the first electrode module (300_1) may be one, and the output terminal of the first electrode module (300_1) may be connected to both the input terminal of the fifth valve (100_5) and the input terminal of the seventh valve (100_7).

[0103] The input terminal of the second electrode module (300_2) can be connected to the output terminal of the fifth valve (100_5) and the output terminal of the sixth valve (100_6). Also, the output terminal of the second electrode module (300_2) can be connected to the input terminal of the second valve (100_2) and the input terminal of the third valve (100_3). As an example, there may be two input terminals of the second electrode module (300_2), the first input terminal of the second electrode module (300_2) can be connected to the output terminal of the fifth valve (100_5), and the second input terminal of the second electrode module (300_2) can be connected to the output terminal of the sixth valve (100_6). As another example, the input terminal of the second electrode module (300_2) may be one, and the input terminal of the second electrode module (300_2) may be connected to both the output terminal of the fifth valve (100_5) and the output terminal of the sixth valve (100_6). Meanwhile, as one example, the output terminal of the second electrode module (300_2) may be two, and the first output terminal of the second electrode module (300_2) may be connected to the input terminal of the second valve (100_2), and the second output terminal of the second electrode module (300_2) may be connected to the input terminal of the third valve (100_3). As another example, the output terminal of the second electrode module (300_2) may be one, and the output terminal of the second electrode module (300_2) may be connected to both the input terminal of the second valve (100_2) and the input terminal of the third valve (100_3).

[0104] The internal structure and operation of the first electrode module (300_1) and the second electrode module (300_2) may be similar to the electrode module (300) of FIG. 1. That is, the first electrode module (300_1) and the second electrode module (300_2) may include a plurality of electrodes, and the water purification operation of FIG. 2a and the cleaning operation of FIG. 2b may be performed.

[0105] The controller (400B) can control the overall operation of the capacitor deionization device (1000B). The controller (400B) can generate a control signal to control the opening and closing operation of a plurality of valves (100_2, 100_3, 100_5, 100_6, 100_7) and can provide the generated control signal to the plurality of valves (100_2, 100_3, 100_5, 100_6, 100_7). Also, the controller (400B) can generate a control signal to control the operation of the pump (200B), the first electrode module (300_1), and the second electrode module (300_2), and can provide the generated control signal to the pump (200B), the first electrode module (300_1), and the second electrode module (300_2).

[0106] FIG. 5a is a diagram showing the operation of a capacitive deionization device (1000B) in a constant mode.

[0107] In the water purification mode, the second valve (100_2) and the fifth valve (100_5) can be opened, and the third valve (100_3), the sixth valve (100_6), and the seventh valve (100_7) can be closed.

[0108] By pump operation, raw water is supplied to the first electrode module (300_1). In purification mode, a positive (+) voltage may be applied to the first electrode of the first electrode module (300_1) and a negative (-) voltage may be applied to the second electrode of the first electrode module (300_1). The first electrode module (300_1) can primarily remove negative (-) ions and positive (+) ions from the raw water.

[0109] Water from which ions have been primarily removed by the first electrode module (300_1) passes through the fifth valve (100_5) and is supplied to the second electrode module (300_2). In the water purification mode, a positive (+) voltage may be applied to the first electrode of the second electrode module (300_2) and a negative (-) voltage may be applied to the second electrode of the second electrode module (300_2). The second electrode module (300_2) can secondarily remove negative (-) ions and positive (+) ions.

[0110] The integer output from the second electrode module (300_2) can be output through the second valve (100_2).

[0111] In this way, the capacitive deionization device (1000B) according to another embodiment can perform primary purification through the first electrode module (300_1) and secondary purification through the second electrode module (300_2). Through this, raw water having a high ion concentration can be effectively purified.

[0112] FIG. 5b is a diagram showing the operation of a capacitive deionization device (1000B) in a cleaning mode.

[0113] In washing mode, the third valve (100_3), the sixth valve (100_6), and the seventh valve (100_7) can be opened, and the second valve (100_2) and the fifth valve (100_) can be closed.

[0114] Raw water is supplied to the first electrode module (300_1) by the operation of the pump (200B). In the washing mode, a negative (-) voltage may be applied to the first electrode of the first electrode module (300_1) and a positive (+) voltage may be applied to the second electrode of the first electrode module (300_1). Meanwhile, in the washing mode, no voltage may be applied to the first and second electrodes of the first electrode module (300_1). The ions adsorbed on the first and second electrodes of the first electrode module (300_1) are diluted and washed together with the raw water, and the first electrode module (300_1) can output wastewater.

[0115] Wastewater output from the first electrode module (300_1) can be output through the seventh valve (100_7) and the third valve (100_3).

[0116] By the operation of the pump (200B), raw water is also supplied to the second electrode module (300_2) through the sixth valve (100_6). In the washing mode, a negative (-) voltage may be applied to the first electrode of the second electrode module (300_2) and a positive (+) voltage may be applied to the second electrode of the second electrode module (300_2). Meanwhile, in the washing mode, no voltage may be applied to the first and second electrodes of the second electrode module (300_2). The ions adsorbed on the first and second electrodes of the second electrode module (300_2) are diluted and washed together with the raw water, and the second electrode module (300_2) can discharge wastewater.

[0117] Wastewater output from the second electrode module (300_2) can be discharged through the third valve (100_3).

[0118] As such, according to another embodiment, raw water is supplied in parallel to the first electrode module (300_1) and the second electrode module (300_2) respectively during the cleaning mode, so cleaning can be performed more effectively compared to the conventional serial method. In the conventional serial method, wastewater output from the first electrode module in the cleaning mode was used to clean the second electrode module. Accordingly, in the conventional serial method, the ion concentration contained in the water used to clean the second electrode module was high, so cleaning was not performed effectively. Compared to this conventional serial method, the capacitive deionization device (1000B) according to another embodiment provides raw water in parallel to the first and second electrode modules (300_1, 300_2) in the cleaning mode. Accordingly, the cleaning operation can be performed effectively on the second electrode module (300_2) as well.

[0119] FIG. 6 is a block diagram showing a capacitive deionization device (1000C) according to another embodiment.

[0120] As shown in FIG. 6, a capacitive deionization device (1000C) according to another embodiment may include a plurality of valves (100_2, 100_3, 100_5, 100_6, 100_7), a pump (200C), a first electrode module (300_1), a second electrode module (300_2), a first flow control valve (600_1), a second flow control valve (600_2), and a controller (400C). Since the capacitive deionization device (1000C) of FIG. 6 is similar to the capacitive deionization device (1000B) of FIG. 4 except that the first and second flow control valves (600_1, 600_2) are added, redundant descriptions may be omitted.

[0121] The first flow control valve (600_1) can be connected between the output terminal of the pump (200C) and the input terminal of the first electrode module (300_1). The first flow control valve (600_1) can control the amount of raw water flowing into the first electrode module (300_1) in water purification mode and washing mode.

[0122] The second flow control valve (600_2) can be connected between the output of the sixth valve (100_6)) and the input terminal of the second electrode module (300_2). The second flow control valve (600_2) can control the amount of raw water flowing into the second electrode module (300_2) in water purification mode and washing mode.

[0123] Here, the first and second flow control valves (600_1) can control the flow rate by the control of the controller (400C).

[0124]

[0125] FIG. 7 is a block diagram showing a capacitive deionization device (1000D) according to another embodiment.

[0126] As shown in FIG. 7, a capacitive deionizing device (1000D) according to another embodiment may include a plurality of valves (100_2, 100_3, 100_8), a pump (200D), an electrode module (300), a filter (700), a sterilizer (800), and a controller (400D). Since the capacitive deionizing device (1000D) of FIG. 7 may be similar to the capacitive deionizing device (1000D) of FIG. 1 except that the filter (700), the sterilizer (800), and the eighth valve (100_8) are added, redundant descriptions may be omitted.

[0127] The filter (700) can be connected between the output terminal of the pump (200D) and the input terminal of the electrode module (300D). The filter (700) can prevent impurities from entering the electrode module (300D). The specific internal configuration of the filter (700) is known to those skilled in the art of the embodiment, so a detailed description is omitted.

[0128] The sterilizer (800) is connected to the output terminal of the second valve (100_2) and can perform sterilization on the purified water output through the second valve (100_2). Since the purified water output through the second valve (100_2) may contain bacteria, the sterilizer (800) can sterilize these bacteria. As one example, the sterilizer (800) may be an ultraviolet sterilizer.

[0129] When the electrode module (300) is used for a long period of time, precipitates such as lime may form inside the electrode module (300). To remove this, a cleaning solution may be used in a cleaning mode. An eighth valve (100_8) may be added so that the cleaning solution can circulate inside the capacitive deionization device (1000D). The eighth valve (100_8) may be connected between the output terminal of the electrode module (300) and the input terminal of the pump (200D). The input terminal of the eighth valve (100_8) may be connected to the output terminal of the electrode module (300), and the output terminal of the eighth valve (100_8) may be connected to the input terminal of the pump (200D).

[0130] FIG. 8a is a diagram showing the operation of a capacitive deionization device (1000D) in an integer mode.

[0131] In the water purification mode, the second valve (100_2) is opened, and the third valve (100_3) and the eighth valve (100_8) can be closed.

[0132] By the operation of the pump (200D), raw water passes through the filter (700) and is supplied to the electrode module (300). The raw water may contain impurities, and the filter (700) performs filtering for these impurities, and the filtered raw water is input to the electrode module (300). The electrode module (300) can remove ions from the filtered raw water to output purified water.

[0133] The purified water output from the electrode module (300) can be input to the sterilizer (800) through the second valve (100_2). The sterilizer (800) performs sterilization on the purified water output from the electrode module (300). The water output from the sterilizer (800) may be the final purified water.

[0134] FIG. 8b is a diagram showing the operation of a capacitive deionization device (1000D) in a cleaning mode.

[0135] The cleaning mode of the capacitive deionization device (1000D) may include an input mode, a circulation mode, and an output mode. Here, the input mode, circulation mode, and output mode may be performed in sequence in time.

[0136] In input mode, the eighth valve (100_8) and the third valve (100_3) are opened, and the second valve (100_2) can be closed. At this time, a cleaning solution is input to the input end of the pump (200D). The cleaning solution may be purified water or a dilute acid, etc.

[0137] In circulation mode, the eighth valve (100_8) is opened, and the second valve (100_2) and the third valve (100_3) can be closed. At this time, the cleaning solution can be circulated through the pump (200D), filter (700), electrode module (300), eighth valve (100_8), and pump (200D). The cleaning solution circulated in this manner is input into the electrode module (300), and the precipitate present inside the electrode module (300D) can be removed by the cleaning solution.

[0138] Next, in output mode, the third valve (100_3) can be opened, and the eighth valve (100_8) and the second valve (100_2) can be closed. Accordingly, wastewater generated in circulation mode can be discharged through the third valve (100_3).

[0139] Hereinafter, with reference to FIG. 9, a capacitive deionization device (1000E) combining the capacitive deionization device (1000A) of FIG. 1, the capacitive deionization device (1000B) of FIG. 4, the capacitive deionization device (1000C) of FIG. 6, and the capacitive deionization device (1000D) of FIG. 7 will be described. Each of the components of the capacitive deionization device (1000E) of FIG. 9 can perform a function similar to that of the components described in FIG. 1 to FIG. 8, and thus the same or similar terms and drawing protections may be used among them.

[0140] FIG. 9 is a block diagram showing a capacitive deionization device (1000E) according to another embodiment.

[0141] As shown in FIG. 9, a capacitive deionization device (1000E) according to another embodiment may include a plurality of valves (100_1 to 100_8), a pump (200E), a first electrode module (300_1), a second electrode module (300_2), a water storage unit (500E), and a controller (400E).

[0142] The input end of the first valve (100_1) can receive raw water or cleaning liquid, and the output end of the first valve (100_1) can be connected to the input end of the pump (200E).

[0143] The input terminal of the second valve (100_2) can be connected to the output terminal of the second electrode module (300_2) and the output terminal of the seventh valve (100_7). Additionally, the output terminal of the second valve (100_2) can output purified water, which is water from which ions have been removed from raw water.

[0144] The input terminal of the third valve (100_3) can be connected to the output terminal of the second electrode module (300_2), the output terminal of the seventh valve (100_7), and the input terminal of the eighth valve (100_8). Also, the output terminal of the third valve (100_3) can output wastewater, which is water in which ions adsorbed on the first and second electrode modules (300_1, 300_2) have been washed.

[0145] The input end of the fourth valve (100_4) can be connected to the output end of the water reservoir (500E), and the output end of the fourth valve (100_4) can be connected to the input end of the pump (200E). When the fourth valve (100_4) is opened by a control signal from the controller (400E), the purified water stored in the water reservoir (500E) can be supplied to the pump (200E). The purified water supplied to the pump (200E) is used for cleaning the first and second electrode modules (300_1, 300_2).

[0146] The input terminal of the fifth valve (100_5) can be connected to the output terminal of the first electrode module (300_1), and the output terminal of the fifth valve (100_5) can be connected to the input terminal of the second electrode module (300_2). Additionally, the input terminal of the sixth valve (100_6) can be connected to the output terminal of the pump (200E), and the output terminal of the sixth valve (100_6) can be connected to the input terminal of the second electrode module (300_2).

[0147] The input terminal of the 7th valve (100_7) can be connected to the output terminal of the 1st electrode module (300_1), and the output terminal of the 7th valve (100_7) can be connected to the input terminal of the 2nd valve (100_2) and the input terminal of the 3rd valve (100_3). Additionally, the input terminal of the 8th valve (100_8) can be connected to the output terminal of the 2nd electrode module (300_2) and the output terminal of the 7th valve (100_7), and the output terminal of the 8th valve (100_8) can be connected to the input terminal of the pump (200E).

[0148] The pump (200E) operates according to the control signal of the controller (400E) and can perform a pumping function to circulate water throughout the entire capacitive deionization device (1000E). The input terminal of the pump (200E) can be connected to the output terminal of the first valve (100_1), the output terminal of the fourth valve (100_4), and the output terminal of the eighth valve (100_8). Also, the output terminal of the pump (200E) can be connected to the input terminal of the first electrode module (300_1) and the input terminal of the sixth valve (100_6).

[0149] The input terminal of the first electrode module (300_1) can be connected to the output terminal of the pump (200E). The output terminal of the first electrode module (300_1) can be connected to the input terminal of the fifth valve (100_5) and the input terminal of the seventh valve (100_7).

[0150] The input terminal of the second electrode module (300_2) can be connected to the output terminal of the fifth valve (100_5) and the output terminal of the sixth valve (100_6). Additionally, the output terminal of the second electrode module (300_2) can be connected to the input terminal of the second valve (100_2), the input terminal of the third valve (100_3), and the input terminal of the eighth valve (100_8).

[0151] The internal structure and operation of the first electrode module (300_1) and the second electrode module (300_2) may be similar to the electrode module (300) of FIG. 1. That is, the first electrode module (300_1) and the second electrode module (300_2) may include a plurality of electrodes, and the water purification operation of FIG. 2a and the cleaning operation of FIG. 2b may be performed.

[0152] The controller (400E) can control the overall operation of the capacitor deionization device (1000E). The controller (400E) can generate a control signal to control the opening and closing operation of a plurality of valves (100_1 to 100_8) and can provide the generated control signal to the plurality of valves (100_1 to 100_8). Also, the controller (400E) can generate a control signal to control the operation of the pump (200E), the first electrode module (300_1), and the second electrode module (300_2), and can provide the generated control signal to the pump (200E), the first electrode module (300_1), and the second electrode module (300_2).

[0153] Meanwhile, the capacitive deionization device (1000E) of FIG. 9 can operate in a series or parallel manner depending on the ion concentration of the raw water. Here, the series method refers to a method in which the raw water flows sequentially through a plurality of electrode modules, and the parallel method refers to a method in which the raw water flows separately through a plurality of electrode modules.

[0154] When the ion concentration of the raw water is greater than or equal to a predetermined standard value, the capacitive deionization device (1000E) can be operated in series. When the capacitive deionization device (1000E) is operated in series, more ions can be removed from the raw water.

[0155] And, when the ion concentration of the raw water is less than a predetermined standard value, the capacitive deionization device (1000E) can be operated in parallel. When the capacitive deionization device (1000E) is operated in parallel, the amount of purified water can be increased.

[0156] To perform this operation, the capacitive deionization device (1000E) may additionally include a sensor (not shown in FIG. 9) for measuring the ion concentration of raw water. A specific description of the sensor for measuring ion concentration is omitted as it is known to those skilled in the art of the embodiment. Here, the controller (400E) can control the capacitive deionization device (1000E) to operate in a series or parallel manner according to the ion concentration of raw water measured through the sensor.

[0157] FIG. 10a is a diagram showing the operation of a capacitor deionization device (1000E) in a serial integer mode.

[0158] In the serial mode of water purification, the first valve (100_1), the second valve (100_2), and the fifth valve (100_5) can be opened, and the third valve (100_3), the fourth valve (100_4), the sixth valve (100_6), the seventh valve (100_7), and the eighth valve (100_8) can be closed.

[0159] Raw water can pass through the first valve (100_1) and pump (200E) and be supplied to the first electrode module (300_1). In a serial water purification mode, a positive (+) voltage can be applied to the first electrode of the first electrode module (300_1) and a negative (-) voltage can be applied to the second electrode of the first electrode module (300_1). The first electrode module (300_1) can primarily remove negative (-) ions and positive (+) ions from the raw water.

[0160] Water from which ions have been primarily removed by the first electrode module (300_1) passes through the fifth valve (100_5) and is supplied to the second electrode module (300_2). In a serial water purification mode, a positive (+) voltage may be applied to the first electrode of the second electrode module (300_2), and a negative (-) voltage may be applied to the second electrode of the second electrode module (300_2). The second electrode module (300_2) can secondarily remove negative (-) ions and positive (+) ions.

[0161] The integer output from the second electrode module (300_2) can be output through the second valve (100_2). Here, at least some of the integer output through the second valve (100_2) can be stored in the integer storage unit (500E).

[0162] In this way, the capacitive deionization device (1000E) according to another embodiment can perform primary purification through the first electrode module (300_1) and secondary purification through the second electrode module (300_2). Through this, raw water having a high ion concentration can be effectively purified.

[0163] FIG. 10b is a diagram showing the operation of a capacitor deionization device (1000E) in a parallel integer mode.

[0164] In the parallel mode of integer operation, the first valve (100_1), the second valve (100_2), the sixth valve (100_6), and the seventh valve (100_7) can be opened, and the third valve (100_3), the fourth valve (100_4), the fifth valve (100_5), and the eighth valve (100_8) can be closed.

[0165] Raw water can be supplied to the first electrode module (300_1) by passing through the first valve (100_1) and the pump (200E). In a parallel water purification mode, a positive (+) voltage can be applied to the first electrode of the first electrode module (300_1) and a negative (-) voltage can be applied to the second electrode of the first electrode module (300_1). The first electrode module (300_1) can remove negative (-) ions and positive (+) ions from the raw water to output purified water. Here, the purified water output from the first electrode module (300_1) can be output by passing through the seventh valve (100_7) and the second valve (100_2).

[0166] And raw water can pass through the first valve (100_1), pump (200E), and sixth valve (100_6) and be supplied to the second electrode module (300_2). In a parallel water purification mode, a positive (+) voltage can be applied to the first electrode of the second electrode module (300_2) and a negative (-) voltage can be applied to the second electrode of the second electrode module (300_2). The second electrode module (300_2) can remove negative (-) ions and positive (+) ions from the raw water and output purified water. Here, the purified water output from the second electrode module (300_2) can pass through the second valve (100_2) and be output.

[0167] As shown in FIG. 10b, the first electrode module (300_1) and the second electrode module (300_2) perform integer operations in parallel, and the integers output to the first and second electrode modules (300_1, 300_2), respectively, can be output through the second valve (100_2). Here, at least some of the integers output through the second valve (100_2) can be stored in the integer storage unit (500E).

[0168] In this way, according to another embodiment, the first electrode module (300_1) and the second electrode module (300_2) of the capacitive deionization device (1000E) can perform purification in parallel. Through this, raw water with a low ion concentration can be purified in a larger amount (more quickly).

[0169] FIG. 10c is a diagram showing the operation of a capacitive deionization device (1000E) in a cleaning mode.

[0170] In the washing mode, the third valve (100_3), the fourth valve (100_4), the sixth valve (100_6), and the seventh valve (100_7) can be opened, and the first valve (100_1), the second valve (100_2), the fifth valve (100_5), and the eighth valve (100_8) can be closed. Since the fourth valve (100_4) is opened, the purified water stored in the water reservoir (500E) can pass through the fourth valve (100_4) and be supplied to the pump (200E).

[0171] Purified water can be supplied to the first electrode module (300_1) by the operation of the pump (200E). In the washing mode, a negative (-) voltage may be applied to the first electrode of the first electrode module (300_1) and a positive (+) voltage may be applied to the second electrode of the first electrode module (300_1). Meanwhile, in the washing mode, no voltage may be applied to the first and second electrodes of the first electrode module (300_1). The ions adsorbed on the first and second electrodes of the first electrode module (300_1) are diluted and washed together with the purified water, and the first electrode module (300_1) can output wastewater.

[0172] Wastewater output from the first electrode module (300_1) can be output through the seventh valve (100_7) and the third valve (100_3).

[0173] And, by the operation of the pump (200E), purified water can pass through the sixth valve (100_6) and be supplied to the second electrode module (300_2). In the washing mode, a negative (-) voltage may be applied to the first electrode of the second electrode module (300_2) and a positive (+) voltage may be applied to the second electrode of the second electrode module (300_2). Meanwhile, in the washing mode, no voltage may be applied to the first and second electrodes of the second electrode module (300_2). The ions adsorbed on the first and second electrodes of the second electrode module (300_2) are diluted and washed together with the purified water, and the second electrode module (300_2) can output wastewater.

[0174] Wastewater output from the second electrode module (300_2) can be discharged through the third valve (100_3).

[0175] In this way, since purified water is supplied in parallel to the first electrode module (300_1) and the second electrode module (300_2), respectively, cleaning can be performed more effectively compared to the conventional serial method. Also, by using purified water instead of raw water in the cleaning mode, ions adsorbed on the first and second electrode modules (300_1, 300_2) can be removed more effectively. Additionally, the time required for the cleaning mode can be reduced, and the time saved in the cleaning mode can be allocated more to the water purification mode to increase overall productivity.

[0176] Meanwhile, in the washing mode of FIG. 10c, water and raw water may be used alternately, rather than using only purified water. In the washing mode, the fourth valve (100_4) and the first valve (100_1) may be opened alternately, and water and raw water may be supplied alternately to the first and second electrode modules (300_1, 300_2).

[0177] FIG. 10d is a diagram showing an example of the operation of a capacitive deionization device (1000E) in a cleaning mode using a cleaning solution.

[0178] The cleaning mode of FIG. 10d involves the circulation of a cleaning solution in a serial manner and may include an input mode, a circulation mode, and an output mode. Here, the input mode, circulation mode, and output mode may be performed sequentially in time.

[0179] In input mode, the first valve (100_1), the third valve (100_3), the fifth valve (100_5), and the eighth valve (100_8) are opened, and the second valve (100_2), the fourth valve (100_4), the sixth valve (100_6), and the seventh valve (100_7) can be closed. At this time, a cleaning solution is input to the input terminal of the pump (200E). The cleaning solution may be purified water or a dilute acid, etc.

[0180] In circulation mode, the fifth valve (100_5) and the eighth valve (100_8) are opened, and the first valve (100_1), the second valve (100_2), the third valve (100_3), the fourth valve (100_4), the sixth valve (100_6), and the seventh valve (100_7) can be closed.

[0181] The cleaning solution can be circulated through the pump (200_E), the first electrode module (300_1), the fifth valve (100_5), the second electrode module (300_2), the eighth valve (100_8), and the pump (200E). The cleaning solution circulated in this manner is input into the first and second electrode modules (300_1, 300_2), and the precipitates present inside the first and second electrode modules (300_1, 300_2) can be removed by the cleaning solution.

[0182] Next, in output mode, the third valve (100_3) and the first valve (100_1) can be opened, and the eighth valve (100_8) can be closed. Accordingly, wastewater generated in circulation mode can be discharged through the third valve (100_3).

[0183] FIG. 10e is a diagram showing another example of the operation of a capacitive deionization device (1000E) in a cleaning mode using a cleaning solution.

[0184] The cleaning mode of FIG. 10e involves the circulation of a cleaning solution in a parallel manner and may include an input mode, a circulation mode, and an output mode. Here, the input mode, circulation mode, and output mode may be performed sequentially in time.

[0185] In input mode, the first valve (100_1), the third valve (100_3), the sixth valve (100_6), the seventh valve (100_7), and the eighth valve (100_8) are opened, and the second valve (100_2), the fourth valve (100_4), and the fifth valve (100_5) can be closed. At this time, a cleaning solution is input to the input terminal of the pump (200E). The cleaning solution may be purified water or a dilute acid, etc.

[0186] In circulation mode, the 6th valve (100_6), 7th valve (100_7), and 8th valve (100_8) are opened, and the 1st valve (100_1), 2nd valve (100_2), 3rd valve (100_3), 4th valve (100_4), and 5th valve (100_5) can be closed.

[0187] The cleaning solution can be circulated to the pump (200E), the first electrode module (300_1), the seventh valve (100_7), the eighth valve (100_8), and the pump (200E). Also, the cleaning solution can be circulated to the pump (200E), the sixth valve (100_6), the second electrode module (300_2), the eighth valve (100_8), and the pump (200E).

[0188] The cleaning solution circulated in parallel in this manner is input into the first and second electrode modules (300_1, 300_2), and the precipitates present inside the first and second electrode modules (300_1, 300_2) can be removed by the cleaning solution.

[0189] Next, in output mode, the third valve (100_3) and the first valve (100_1) can be opened, and the eighth valve (100_8) can be closed. Accordingly, wastewater generated in circulation mode can be discharged through the third valve (100_3).

[0190] Although embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention as defined in the following claims also fall within the scope of the present invention.

Claims

1. Pump, An electrode module in which the input terminal is connected to the output terminal of the pump, A first valve connected to the output terminal of the electrode module and outputting a integer output from the electrode module in integer mode, In a cleaning mode, a second valve that receives a first integer, which is at least a part of the above integers, and provides it to the electrode module through the pump, and A third valve connected to the output terminal of the electrode module and outputting wastewater output from the electrode module in the cleaning mode. Capacitive deionization device.

2. In Paragraph 1, The above first integer is provided to the electrode module through the above second valve and the pump, and The electrode module is washed by the first purified water and outputs the wastewater to the third valve. Capacitive deionization device.

3. In Paragraph 1, In the above purification mode, a fourth valve further comprising receiving raw water and supplying it to the pump Capacitive deionization device.

4. In Paragraph 3, In the above purification mode, the raw water is supplied to the electrode module through the fourth valve and the pump, and The electrode module outputs the purified water, from which ions have been removed from the raw water, to the first valve. Capacitive deionization device.

5. In Paragraph 4, In the above washing mode, the second valve and the fourth valve are opened alternately, and the raw water and the first purified water are alternately supplied to the electrode module. Capacitive deionization device.

6. In Paragraph 1, Further including an integer storage unit that stores the first integer above Capacitive deionization device.

7. Pump, A first electrode module in which the input terminal is connected to the output terminal of the above-mentioned pump, A first valve having an input terminal connected to the output terminal of the first electrode module, A second valve, the input end of which is connected to the output end of the above-mentioned pump, A second electrode module having an input terminal connected to the output terminal of the first valve and the output terminal of the second valve, A third valve connected to the output terminal of the second electrode module and outputting an integer output from the second electrode module in integer mode, A fourth valve connected to the output terminal of the second electrode module and outputting wastewater output from the second electrode module in a washing mode, and A fifth valve connected between the output terminal of the first electrode module and the input terminal of the fourth valve. Capacitive deionization device.

8. In Paragraph 7, In the above washing mode, the second valve, the fourth valve, and the fifth valve are opened, and the first valve and the third valve are closed. Capacitive deionization device.

9. In Paragraph 8, In the above washing mode, The raw water input to the pump is supplied to the first electrode module, and the wastewater output from the first electrode module is output through the fifth valve and the fourth valve. The above raw water is supplied to the second electrode module through the second valve, and the wastewater output from the second electrode module is output through the fourth valve. Capacitive deionization device.

10. In Paragraph 7, In the above integer mode, The first valve and the third valve are opened, and the second valve, the fourth valve, and the fifth valve are closed. Capacitive deionization device.

11. In Paragraph 10, In the above integer mode, The above raw water is supplied to the first electrode module through a pump, and the first electrode module primarily removes ions, and The water output from the first electrode module is supplied to the second electrode module through the first valve, and the second electrode module secondarily removes ions, and The integer output from the second electrode module is output through the third valve Capacitive deionization device.

12. In Paragraph 7, In the above washing mode, a sixth valve further comprising receiving a first integer, which is at least a part of the above integers, and providing it to the pump. Capacitive deionization device.

13. In Paragraph 12, In the above washing mode, the second valve, the fourth valve, the fifth valve, and the sixth valve are opened, and the first valve and the third valve are closed. Capacitive deionization device.

14. In Paragraph 13 In the above washing mode, The first purified water input to the pump is provided to the first electrode module, and the wastewater output from the first electrode module is output through the fifth valve and the fourth valve. The first purified water input to the pump is provided to the second electrode module through the second valve, and the wastewater output from the second electrode module is output through the fourth valve. Capacitive deionization device.

15. In Paragraph 7, A sixth valve further comprising receiving raw water input and supplying it to the pump. Capacitive deionization device.

16. In Paragraph 15, When the ion concentration of the above raw water is less than a predetermined reference value, the second valve, the third valve, the fifth valve, and the sixth valve are opened, and the first valve and the fourth valve are closed. Capacitive deionization device.

17. In Paragraph 16, When the ion concentration of the above raw water is greater than or equal to the above predetermined reference value, the first valve, the third valve, and the sixth valve are opened, and the second valve, the fourth valve, and the fifth valve are closed. Capacitive deionization device.

18. In Paragraph 7, A sixth valve further comprising a connection between the output terminal of the second electrode module and the input terminal of the pump. Capacitive deionization device.

19. In Paragraph 18, In a cleaning mode using a cleaning solution, the cleaning solution circulates through the pump, the first electrode module, the first valve, the second electrode module, the sixth valve, and the pump. Capacitive deionization device.

20. In Paragraph 18, In the cleaning mode using the cleaning solution, The cleaning solution circulates through the pump, the first electrode module, the fifth valve, the sixth valve, and the pump, and The cleaning solution circulates through the pump, the second valve, the second electrode module, the sixth valve, and the pump. Capacitive deionization device.

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