Purification device and purification system

Abstract

The invention provides a purification device and a purification system, and relates to the technical field of electrochemistry, the purification device comprises a first electrode, a second electrode and at least one electrolysis unit, the electrolysis unit comprises a first monopole membrane, a bipolar membrane, a second monopole membrane, a first partition plate, a third monopole membrane, a second partition plate and a fourth monopole membrane which are sequentially arranged between the first electrode and the second electrode at intervals; the first electrode cavity, the first electrolysis cavity, the second electrode cavity, the second electrolysis cavity, the first medium cavity, the third electrode cavity, the second medium cavity and the fourth electrode cavity are distributed in the direction from the first electrode to the second electrode. The first medium only needs to flow once in the loop to change the electric field, and under the action of the bipolar membrane, the acid-base property of the first medium and the target medium is effectively kept unchanged. According to the scheme, on the premise of keeping the pH values of the first medium and the target medium unchanged, the change of the electrode is avoided, and the reliability and the service life of the circuit of the purification device are effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of electrochemical technology, and in particular to a purification device and a purification system. Background Art

[0002] Electrochemical deionization technology is a new type of ion separation technology that has emerged in recent years. The principle is to separate and concentrate ions in the solution through the adsorption and desorption of ions by electrodes under the action of an electric field. In this process, the pH value of the electrode liquid in the positive electrode cavity and the negative electrode cavity will change, resulting in poor stability of the electrosorption device.

[0003] The current related technology proposes to solve the problem of pH value changes by repeatedly changing the positive and negative electrodes. However, frequent changes in the electrodes may increase the instability factors in the operation process, such as current fluctuations, voltage changes, etc., which can easily lead to a reduction in circuit reliability or life, increase equipment complexity and maintenance costs, and affect production efficiency and water quality. Summary of the invention

[0004] In view of the shortcomings of the related technologies mentioned above, the present application provides a purification device and a purification system to solve the above technical problems.

[0005] The present application provides a purification device, comprising a first electrode, a second electrode and at least one electrolysis unit, wherein the second electrode and the first electrode have different polarities and are arranged opposite to each other, and the electrolysis unit comprises a first monopolar membrane, a first separator, a second monopolar membrane, a bipolar membrane, a third monopolar membrane, a second separator and a fourth monopolar membrane which are sequentially arranged between the first electrode and the second electrode, forming a first electrode cavity, a first electrolysis cavity, a second electrode cavity, a second electrolysis cavity, a first medium cavity, a third electrode cavity, a second medium cavity and a fourth electrode cavity distributed along the direction from the first electrode to the second electrode, the first electrode cavity, the second electrode cavity, the third electrode cavity and the fourth electrode cavity are sequentially connected to form a loop, the loop is used to circulate a first medium containing an electrolyte, and the loop is provided with a pump body which provides power for the first medium to flow in the loop, the first electrolysis cavity and the second electrolysis cavity are used to circulate a second medium containing target ions, and the first medium cavity and the second medium cavity are used to circulate the purified target medium.

[0006] In one embodiment of the present application, the first electrolysis chamber and the second electrolysis chamber both have a first liquid outlet and a first liquid inlet that are far away from each other, and the electrolysis unit further includes a first conduction component, the first conduction component includes a first valve body and a second valve body, the first valve body is arranged at the first liquid outlet of the first electrolysis chamber, and the second valve body is arranged at the first liquid inlet of the second electrolysis chamber; When the first valve body and the second valve body are in a first state, the first electrolysis chamber and the second electrolysis chamber are connected in series to form a first channel; When the first valve body and the second valve body are in the second state, the first electrolysis chamber and the second electrolysis chamber are connected in parallel.

[0007] In one embodiment of the present application, the number of electrolysis units is multiple, and the purification device includes at least one second conduction component, each of which includes a third valve body and a fourth valve body, the third valve body is arranged at the liquid inlet end of the first electrolysis chamber of one of the two adjacent electrolysis units, and the fourth valve body is arranged at the liquid outlet end of the second electrolysis chamber of the other of the two adjacent electrolysis units; When the third valve body and the fourth valve body are in the first state, the first channels of two adjacent electrolytic units are connected to each other; When the third valve body and the fourth valve body are in the second state, the first channels of two adjacent electrolytic units are connected in parallel.

[0008] In one embodiment of the present application, the first medium cavity and the second medium cavity both have a second liquid outlet and a second liquid inlet that are far away from each other, and the purification device includes a third conduction component, the third conduction component includes a fifth valve body and a sixth valve body, the fifth valve body is arranged at the second liquid outlet of the first medium cavity, and the sixth valve body is arranged at the second liquid inlet of the second medium cavity; When the fifth valve body and the sixth valve body are in the first state, the first medium chamber and the second medium chamber are connected in series to form a second channel; When the fifth valve body and the sixth valve body are in the second state, the first medium chamber and the second medium chamber are connected in parallel.

[0009] In one embodiment of the present application, the number of electrolysis units is multiple, and the purification device includes at least one fourth conduction component, the fourth conduction component includes a seventh valve body and an eighth valve body, the seventh valve body is arranged at the liquid inlet end of the first electrolysis chamber of one of the two adjacent electrolysis units, and the eighth valve body is arranged at the liquid outlet end of the second electrolysis chamber of the other of the two adjacent electrolysis units; When the seventh valve body and the eighth valve body are in the first state, the second channels of two adjacent electrolytic units are connected to each other; When the seventh valve body and the eighth valve body are in the second state, the second channels of two adjacent electrolytic units are connected in parallel.

[0010] In one embodiment of the present application, there are multiple electrolytic units, and the purification device further includes at least one third partition plate, and at least one third partition plate is disposed between two adjacent electrolytic units.

[0011] In one embodiment of the present application, when the target ion is a cation, the first monopolar membrane, the second monopolar membrane, the third monopolar membrane and the fourth monopolar membrane are all cationic membranes; when the target ion is a cation, the first monopolar membrane, the second monopolar membrane, the third monopolar membrane and the fourth monopolar membrane are all anionic membranes.

[0012] To achieve the above-mentioned purpose and other related purposes, the present application provides a purification system, including at least two purification devices as described above, and at least two purification devices are arranged correspondingly.

[0013] In one embodiment of the present application, a plurality of purification devices form a plurality of groups of purification devices, the plurality of groups of purification devices are spaced apart along a first direction, and a plurality of purification devices in the same group are distributed along a second direction, and the first direction and the second direction intersect.

[0014] In one embodiment of the present application, the first electrolytic chambers of a plurality of purification devices are interconnected.

[0015] In one embodiment of the present application, the second electrolytic chambers of multiple purification devices are interconnected.

[0016] In one embodiment of the present application, the first medium chambers of a plurality of purification devices are interconnected.

[0017] In one embodiment of the present application, the second medium chambers of a plurality of purification devices are interconnected.

[0018] The technical solution adopted by the present invention can achieve the following beneficial effects: the second medium flows in the first electrolytic chamber and the second electrolytic chamber, and the target ions in the second medium can flow into the first electrode chamber through the first monopolar membrane and into the second electrode chamber through the second monopolar membrane, respectively. The first medium located in the first electrode chamber and the second electrode chamber and the target ions inside thereof flow to the third electrode chamber and the fourth electrode chamber, and the direction of the electric field around the target ions in the first medium changes each cycle in the loop, and the changing electric field can make the target ions flow into the first medium chamber through the third monopolar membrane and into the second medium chamber through the fourth monopolar membrane, respectively, to form the purified target medium. During this period, there is no need to change the positive and negative electrodes, and only the first medium needs to flow in the loop once to complete the change of the electric field. In addition, the effect of the bipolar membrane effectively keeps the acidity and alkalinity of the first medium, the second medium and the target medium unchanged. Under the premise of maintaining the pH value of the first medium, the second medium and the target medium unchanged, this solution avoids changes in the electrodes, effectively improves the reliability and life of the circuit of the purification device, reduces the complexity of the equipment and the maintenance cost, and greatly improves the production efficiency and the quality of the effluent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1is a schematic structural diagram of a purification device shown in an exemplary embodiment of the present application; Figure 2 is a schematic structural diagram of another purification device shown in an exemplary embodiment of the present application; Figure 3 This is a schematic diagram of the structure of another purification device shown in an exemplary embodiment of the present application. Figure 4 is a schematic structural diagram of a purification system shown in an exemplary embodiment of the present application; Figure 5 It is a schematic structural diagram of another purification system shown as an exemplary embodiment of the present application.

[0021] In the figure: 1, purification system; 100, purification device; 110, first electrode; 120, second electrode; 130, electrolysis unit; 131, first monopolar membrane; 132, first separator; 133, second monopolar membrane; 134, bipolar membrane; 135, third monopolar membrane; 136, second separator; 137, fourth monopolar membrane; 138, loop; 139, third separator; 141, first electrode chamber; 142, first electrolysis chamber; 143, second electrode chamber; 144, second electrolysis chamber; 145 , a first medium cavity; 146, a third electrode cavity; 147, a second medium cavity; 148, a fourth electrode cavity; 150, a first conduction component; 151, a first valve body; 152, a second valve body; 153, a first channel; 160, a second conduction component; 161, a third valve body; 162, a fourth valve body; 170, a third conduction component; 171, a fifth valve body; 172, a sixth valve body; 173, a second channel; 180, a fourth conduction component; 181, a seventh valve body; 182, an eighth valve body. DETAILED DESCRIPTION

[0022] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0023] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0024] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of each component relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0025] Electrochemical deionization technology is a new type of ion separation technology that has emerged in recent years. The principle is to separate and concentrate ions in the solution through the adsorption and desorption of ions by electrodes under the action of an electric field. In this process, the pH value of the electrode liquid in the positive electrode cavity and the negative electrode cavity will change, and the pH value of the purified solution itself will also change, which will lead to poor stability of the electrosorption device and require additional steps to adjust the pH value of the purified solution.

[0026] The current related technology proposes to solve the problem of pH value changes by repeatedly changing the positive and negative electrodes. However, frequent changes in the electrodes may increase the instability factors in the operation process, such as current fluctuations, voltage changes, etc., which can easily lead to a reduction in circuit reliability or life, increase equipment complexity and maintenance costs, and affect production efficiency and water quality.

[0027] This embodiment provides a purification device 100, see Figure 1 The purification device 100 may include a first electrode 110 , a second electrode 120 , and an electrolysis unit 130 , and the electrolysis unit 130 is disposed between the first electrode 110 and the second electrode 120 .

[0028] Please continue reading Figure 1 , the first electrode 110 and the second electrode 120 have different polarities and are arranged relative to each other. For example, in one embodiment, the first electrode 110 can be a positive electrode and the second electrode 120 can be a negative electrode, and the relative arrangement of the two can generate a stable electric field. In another embodiment, the first electrode 110 can be a negative electrode and the second electrode 120 can be a positive electrode, and the polarities of the first electrode 110 and the second electrode 120 are not limited here.

[0029] The number of the electrolytic unit 130 may be at least one, for example, 1, 2, 3, etc., which is not limited in this embodiment. The electrolytic unit 130 may include a first monopolar membrane 131, a first separator 132, a second monopolar membrane 133, a bipolar membrane 134, a third monopolar membrane 135, a second separator 136, and a fourth monopolar membrane 137. Further, the first monopolar membrane 131, the first separator 132, the second monopolar membrane 133, the bipolar membrane 134, the third monopolar membrane 135, the second separator 136, and the fourth monopolar membrane 137 are sequentially arranged between the first electrode 110 and the second electrode 120, forming a first electrode cavity 141, a first electrolytic cavity 142, a second electrode cavity 143, a second electrolytic cavity 144, a first dielectric cavity 145, a third electrode cavity 146, a second dielectric cavity 147, and a fourth electrode cavity 148 distributed along the direction from the first electrode 110 to the second electrode 120. This arrangement can divide a plurality of chambers with different functions between the first electrode 110 and the second electrode 120 , and the plurality of chambers cooperate with each other to achieve the electrolysis function of the purification device 100 .

[0030] In some embodiments, the initial solution of the solution passing through the first electrolysis chamber 142 and the second electrolysis chamber 144 may be the same as the initial solution passing through the first dielectric chamber 145 and the second dielectric chamber 147 .

[0031] See also Figure 2 The first electrode chamber 141, the second electrode chamber 143, the third electrode chamber 146 and the fourth electrode chamber 148 are connected in sequence to form a loop 138, and the loop 138 is used to circulate the first medium containing the electrolyte, and the loop 138 is provided with a pump body (not shown) that provides power for the first medium to flow in the loop 138, and the pump body can provide power for the first medium to circulate in the loop 138. Exemplarily, the flow direction of the first medium in the first electrode chamber 141 and the second electrode chamber 143 is different. For example, Figure 2 As shown by the arrows, the flow direction of the first medium in the first electrode chamber 141 is from bottom to top, and the flow direction of the first medium in the second electrode chamber 143 is from top to bottom. The flow directions of the first medium in the third electrode chamber 146 and the fourth electrode chamber 148 are different. For example, Figure 2 As shown by the arrows, the flow direction of the first medium in the third electrode chamber 146 is from bottom to top, and the flow direction of the first medium in the fourth electrode chamber 148 is from top to bottom. This arrangement allows the first electrode chamber 141, the second electrode chamber 143, the third electrode chamber 146, and the fourth electrode chamber 148 to be connected end to end in sequence to form a loop 138, thereby reducing pipeline distribution and improving the installation efficiency of the purification device 100.

[0032] The first electrolytic chamber 142 and the second electrolytic chamber 144 are used to circulate the second medium containing target ions. The target ions can be lithium ions or chloride ions, etc. The second medium can be industrial wastewater containing target ions, which is not limited here. The target ions in the second medium can flow into the first electrode chamber 141 through the first monopolar membrane 131 and into the second electrode chamber 143 through the second monopolar membrane 133. Exemplarily, the flow directions of the second medium in the first electrolytic chamber 142 and the second electrolytic chamber 144 are different. For example, Figure 2 As shown by the arrows, the flow direction of the second medium in the first electrolytic chamber 142 is from top to bottom, and the flow direction of the second medium in the second electrolytic chamber 144 is from bottom to top. This arrangement can selectively connect or disconnect the connection between the first electrolytic chamber 142 and the second electrolytic chamber 144, that is, the second medium can selectively circulate in the two chambers. In addition, the arrangement of the second medium flowing in two different directions can eliminate the impact or vibration caused by the flow, thereby improving the stability of the purification device 100.

[0033] The first medium circulates in the loop 138, and the direction of the electric field around the target ions in the first medium changes each time it circulates in the loop 138. The changing electric field can cause the target ions to flow into the first medium cavity 145 through the third monopolar membrane 135 and into the second medium cavity 147 through the fourth monopolar membrane 137, respectively, to form a purified target medium. The first medium cavity 145 and the second medium cavity 147 are used to circulate the purified target medium. As the first medium circulates continuously in the loop 138, the content of the target ions in the target medium continues to increase, so as to achieve purification of the target ions.

[0034] During this period, illustratively, the target medium has different flow directions in the first medium cavity 145 and the second medium cavity 147. Figure 2 As shown by the arrows, the target medium flows from top to bottom in the first medium cavity 145, and flows from bottom to top in the second medium cavity 147. This arrangement can selectively connect or disconnect the connection between the first medium cavity 145 and the second medium cavity 147, that is, the target medium can selectively circulate in the two cavities. In addition, the arrangement in which the target medium flows in two different directions can eliminate the impact or vibration caused by the flow, thereby improving the stability of the purification device 100.

[0035] Among them, the monopolar membrane is a semipermeable membrane with a certain selectivity, which can only allow one type of ion to pass, such as a cation, and block another type of ion, such as an anion. The bipolar membrane 134 can be made of a cation selective membrane and an anion selective membrane. Exemplarily, the bipolar membrane 134 is a bipolar membrane. The bipolar membrane 134 can dissociate water into hydrogen ions and hydroxide ions under the action of the electric field between the first electrode 110 and the second electrode 120, and pass through the anion membrane and the cation membrane respectively. By adjusting factors such as the electric field strength, membrane material, and membrane structure, the migration rate and generation amount of hydrogen ions and hydroxide ions can be controlled, thereby achieving the regulation and balance of the acid-base concentration of the solution in the second electrolytic chamber 144 and the solution in the first medium chamber 145. In addition, the loop 138 continuously circulates the first medium to balance the acid-base of the first medium in the loop 138, avoid changes in the electrode, and effectively improve the reliability and life of the circuit of the purification device 100. The partition can be used to isolate different electrolyte solutions or electrode areas to prevent direct contact between substances and unnecessary chemical reactions.

[0036] In some embodiments, when the first electrode 110 is a negative electrode and the second electrode 120 is a positive electrode, the anion selective membrane in the bipolar membrane 134 is on the side away from the first electrode 110 , and the cation selective membrane in the bipolar membrane 134 is on the side adjacent to the second electrode 120 .

[0037] In other embodiments, when the first electrode 110 is a positive electrode and the second electrode 120 is a negative electrode, the anion selective membrane in the bipolar membrane 134 is located on the side adjacent to the first electrode 110 , and the cation selective membrane in the bipolar membrane 134 is located on the side away from the second electrode 120 .

[0038] In the meantime, please continue to read Figure 2 , there is no need to change the positive and negative electrodes, and the electric field changes only by allowing the first medium to flow once in the loop 138, and the liquid in the loop 138 circulates continuously, which can effectively keep the acidity and alkalinity of the first medium and the target medium unchanged. This embodiment avoids electrode changes while maintaining the pH value of the first medium and the target medium unchanged, effectively improves the reliability and life of the circuit of the purification device 100, reduces the complexity of the equipment and the maintenance cost, and greatly improves the production efficiency and the quality of the effluent.

[0039] It is understandable that the first monopolar membrane 131, the second monopolar membrane 133, the third monopolar membrane 135 and the fourth monopolar membrane 137 can all be cationic membranes or anionic membranes. Exemplarily, when the target ion is a cation, the first monopolar membrane 131, the second monopolar membrane 133, the third monopolar membrane 135 and the fourth monopolar membrane 137 are all cationic membranes. When the target ion is an anion, the first monopolar membrane 131, the second monopolar membrane 133, the third monopolar membrane 135 and the fourth monopolar membrane 137 are all anionic membranes. Exemplarily, the first monopolar membrane 131, the second monopolar membrane 133, the third monopolar membrane 135 and the fourth monopolar membrane 137 are all membranes that allow the target ion to pass. For example, the first monopolar membrane 131, the second monopolar membrane 133, the third monopolar membrane 135 and the fourth monopolar membrane 137 are all anion exchange membranes that only pass chloride ions, or the first monopolar membrane 131, the second monopolar membrane 133, the third monopolar membrane 135 and the fourth monopolar membrane 137 are all cation exchange membranes that only pass lithium ions.

[0040] The above embodiment enables the target ions to pass through the first monopolar membrane 131, the second monopolar membrane 133, the third monopolar membrane 135 and the fourth monopolar membrane 137 respectively to enter the first electrode cavity 141, the second electrode cavity 143, the first medium cavity 145 and the second medium cavity 147, so that the target ions can pass from the first medium to the second medium and finally reach the target medium.

[0041] In some embodiments, the first separator 132 and the second separator 136 may be bipolar membranes to better adjust the pH of the second medium and the target medium.

[0042] In this example, please continue to refer to Figure 2 , the first electrolysis chamber 142 and the second electrolysis chamber 144 both have a first liquid outlet and a first liquid inlet that are far away from each other. The electrolysis unit 130 may also include a first conduction component 150, and the first conduction component 150 may include a first valve body 151 and a second valve body 152. The first valve body 151 and the second valve body 152 may be electric three-way valves or manual three-way valves, etc., which are not limited in this embodiment. The first valve body 151 is arranged at the first liquid outlet of the first electrolysis chamber 142, and the second valve body 152 is arranged at the first liquid inlet of the second electrolysis chamber 144. The first valve body 151 and the second valve body 152 may be connected via a pipeline, and the working states of the first valve body 151 and the second valve body 152 may be controlled and switched, so that the two electrolysis chambers of the same electrolysis unit 130 are interconnected or independent, so as to adapt to more complex working conditions.

[0043] Please continue reading Figure 2, when the first valve body 151 and the second valve body 152 are in the first state, the first electrolysis chamber 142 and the second electrolysis chamber 144 are connected in series to form a first channel 153. In the series mode, the first electrolysis chamber 142 and the second electrolysis chamber 144 can share a liquid inlet and outlet system, which helps to simplify the pipeline layout and reduce the number of valves, thereby reducing the complexity and maintenance cost of the system. At the same time, this design also improves the utilization of space, making the system more compact and efficient.

[0044] For example, when the target ion content in the second medium is reduced, the number of first electrolytic chambers 142 and second electrolytic chambers 144 connected in series can be reduced so that the second medium can reduce the target ion content to within the target range after a single pass through the purification device 100. When the target ion content in the second medium is increased, the number of first electrolytic chambers 142 and second electrolytic chambers 144 connected in series can be increased so that the second medium can reduce the target ion content to within the target range after a single pass through the purification device 100. In this way, there is no need to circulate the second medium through the purification device 100 multiple times, and thus there is no need to set up a transfer pool for storing the second medium circulation.

[0045] In addition, in the series mode, the second medium can be processed by two electrolytic chambers in sequence, which helps to more thoroughly remove the target ions in the second medium. For example, when the target ions of the second medium are not completely processed in the first electrolytic chamber 142, the second electrolytic chamber 144 arranged in series can further process the remaining target ions in the second medium, thereby improving the overall processing effect.

[0046] Please continue reading Figure 2 , when the first valve body 151 and the second valve body 152 are in the second state, the first electrolytic chamber 142 and the second electrolytic chamber 144 are connected in parallel. In the parallel mode, the first electrolytic chamber 142 and the second electrolytic chamber 144 have independent liquid inlet and outlet systems, that is, they can receive and process the second medium of different concentrations or components respectively without interfering with each other. A more independent setting can enable the system to respond to various complex processing requirements more flexibly. The parallel mode allows each electrolytic chamber to be targeted according to the specific characteristics of the second medium, thereby ensuring the treatment effect. Exemplarily, the concentration of the target ion in the first medium in the first electrode chamber 141 and the second electrode chamber 143 is inconsistent, and the effects of the first electrolytic chamber 142 and the second electrolytic chamber 144 on the second medium will also be different. Furthermore, according to the difference between the effects of the first electrolytic chamber 142 and the second electrolytic chamber 144, the second medium of different concentrations is introduced to improve the purification effect of the purification device 100.

[0047] In some embodiments, please refer to Figure 2In the case of a fault in one of the electrolytic chambers in the purification device 100, such as a leak, the faulty electrolytic chamber can be isolated by switching the first valve body 151 and the second valve body 152, thereby preventing the faulty electrolytic chamber from continuing to work. Therefore, in the case of a temporary fault in the purification device 100, it is beneficial to retain part of the processing capacity of the purification device 100 by isolating the faulty part. It should be noted that the isolated faulty part, that is, the faulty part is connected in parallel with other parts that have not failed, and the part is stopped from continuing to pass the fluid medium by closing the pipeline entering the faulty part.

[0048] Exemplarily, when in the first state, the first valve body 151 and the second valve body 152 are connected to each other. When in the second state, the first valve body 151 and the second valve body 152 are disconnected and are respectively connected to other devices.

[0049] In this example, see Figure 3 , the number of the electrolysis unit 130 can be multiple, the purification device 100 can include a second conduction component 160, the number of the second conduction component 160 can be at least one, for example, 1, 2, 3 ..., and this embodiment is not limited. Among them, for the convenience of observation, Figure 3 Only two electrolysis units 130 are shown, and the purification device 100 may include more electrolysis units 130, which is not limited in this embodiment. Each second conduction component 160 includes a third valve body 161 and a fourth valve body 162, and the third valve body 161 and the fourth valve body 162 may be an electric three-way valve or a manual three-way valve, etc., which is not limited in this embodiment. The third valve body 161 is arranged at the liquid inlet end of the first electrolysis chamber 142 of one of the two adjacent electrolysis units 130, and the fourth valve body 162 is arranged at the liquid outlet end of the second electrolysis chamber 144 of the other of the two adjacent electrolysis units 130. The third valve body 161 and the fourth valve body 162 are connected by a pipeline, and the working states of the third valve body 161 and the fourth valve body 162 are switched by controlling so that the electrolysis chambers of the two adjacent electrolysis units 130 are interconnected or independent to adapt to more complex working conditions.

[0050] Please continue reading Figure 3, when the third valve body 161 and the fourth valve body 162 are in the first state, the first channels 153 of two adjacent electrolytic units 130 are interconnected. It is understandable that the first channels 153 of multiple electrolytic units 130 can be interconnected. The second medium will be processed by each electrolytic unit 130 in turn, and the continuous processing setting helps to ensure that the target ions in the second medium are fully removed and purified. In addition, the series connection enables multiple electrolytic units 130 to be tightly integrated together to form an integrated processing system. This helps to reduce floor space, reduce installation costs, and improve the compactness and aesthetics of the entire system.

[0051] When the third valve body 161 and the fourth valve body 162 are in the second state, the first channels 153 of the two adjacent electrolytic units 130 are connected in parallel. In the parallel state, the electrolytic chamber of each electrolytic unit 130 can work independently to process the respective second medium. If a certain electrolytic unit 130 fails or its performance deteriorates, it will not directly affect the other parallel electrolytic units 130. The independently arranged electrolytic units 130 can improve the working stability and reliability of the entire purification device 100. This setting can adjust the parallel number of the first channels 153 according to actual needs to cope with different processing requirements of the second medium.

[0052] Exemplarily, when in the first state, the third valve body 161 and the fourth valve body 162 are connected to each other. When in the second state, the third valve body 161 and the fourth valve body 162 are disconnected and are respectively connected to other devices.

[0053] In this example, please refer to Figure 2 , the first medium cavity 145 and the second medium cavity 147 both have a second liquid outlet and a second liquid inlet that are far from each other, the purification device 100 may include a third conduction component 170, the third conduction component 170 may include a fifth valve body 171 and a sixth valve body 172, the fifth valve body 171 and the sixth valve body 172 may be electric three-way valves or manual three-way valves, etc., and this embodiment does not limit this. The fifth valve body 171 is arranged at the second liquid outlet of the first medium cavity 145, and the sixth valve body 172 is arranged at the second liquid inlet of the second medium cavity 147. The fifth valve body 171 and the sixth valve body 172 may be connected by a pipeline, and the working states of the fifth valve body 171 and the sixth valve body 172 may be controlled and switched, so that the adjacent first medium cavity 145 and the second medium cavity 147 are connected to each other or independent, so as to adapt to more complex working conditions.

[0054] Please continue reading Figure 2, when the fifth valve body 171 and the sixth valve body 172 are in the first state, the first medium chamber 145 and the second medium chamber 147 are connected in series to form the second channel 173. The series connection enables the first medium chamber 145 and the second medium chamber 147 to communicate with each other. When the target medium fails to completely absorb the target ions in the first medium in the first medium chamber 145, the target medium flows along the second channel 173 to the second medium chamber 147 and continues to be processed in the second medium chamber 147. In addition, the more centralized setting helps to reduce the floor space, reduce the installation cost, and improve the compactness and aesthetics of the purification device 100.

[0055] In some embodiments, when the target ion content in the second medium is stable, the number of the first medium chambers 145 and the second medium chambers 147 connected in series can be increased by adjusting the state of the fifth valve body 171 and the sixth valve body 172 to obtain a target medium with a higher target ion concentration. Of course, the number of the first medium chambers 145 and the second medium chambers 147 connected in series can also be reduced by adjusting the state of the fifth valve body 171 and the sixth valve body 172 to obtain a target medium with a lower target ion concentration.

[0056] Therefore, the purification device 100 provided in the above embodiment can adapt to different requirements for target ion content in the target medium, so that the concentration of target ions in the target medium finally discharged by the purification device 100 is closer to the required concentration.

[0057] Please continue reading Figure 2 , when the fifth valve body 171 and the sixth valve body 172 are in the second state, the first medium chamber 145 and the second medium chamber 147 are connected in parallel. The first medium chamber 145 and the second medium chamber 147 are relatively independent in the parallel state and do not interfere with each other. This setting helps to ensure that each medium chamber can work according to predetermined parameters and conditions, and the target media in the first medium chamber 145 and the second medium chamber 147 do not affect each other, ensuring that the concentration of the target ions meets the processing requirements.

[0058] Exemplarily, when in the first state, the fifth valve body 171 and the sixth valve body 172 are connected to each other. When in the second state, the fifth valve body 171 and the sixth valve body 172 are disconnected and are respectively connected to other devices.

[0059] In this example, please refer to Figure 3, the number of electrolysis units 130 can be multiple, the purification device 100 can include a fourth conduction component 180, the number of the fourth conduction component 180 can be at least one, for example, 1, 2, 3..., and this embodiment does not limit it. The fourth conduction component 180 can include a seventh valve body 181 and an eighth valve body 182, and the seventh valve body 181 and the eighth valve body 182 can be electric three-way valves or manual three-way valves, etc., and this embodiment does not limit it. The seventh valve body 181 is arranged at the liquid inlet end of the first medium cavity 145 of one of the two adjacent electrolysis units 130, and the eighth valve body 182 is arranged at the liquid outlet end of the second medium cavity 147 of the other of the two adjacent electrolysis units 130. The seventh valve body 181 and the eighth valve body 182 can be connected by a pipeline, and the working state of the seventh valve body 181 and the eighth valve body 182 can be controlled to switch, so that the medium cavities of the two adjacent electrolysis units 130 are connected to each other or independent, so as to adapt to more complex working conditions.

[0060] Please continue reading Figure 3 , when the seventh valve body 181 and the eighth valve body 182 are in the first state, the second channels 173 of two adjacent electrolytic units 130 are interconnected. It is understandable that the second channels 173 of multiple electrolytic units 130 can be interconnected. The target medium will absorb the target ions through each electrolytic unit 130 in turn, and the continuous setting helps to increase the concentration of the target ions in the target medium, thereby obtaining a higher concentration of the target medium. In addition, the series connection enables multiple electrolytic units 130 to be tightly integrated together to form an integrated treatment system. This helps to reduce the floor space, reduce installation costs, and improve the compactness and aesthetics of the entire system.

[0061] When the seventh valve body 181 and the eighth valve body 182 are in the second state, the second channels 173 of two adjacent electrolytic units 130 are connected in parallel. In the parallel state, the electrolytic chamber of each electrolytic unit 130 can work independently. If a certain electrolytic unit 130 fails or its performance deteriorates, it will not directly affect other parallel electrolytic units 130. The independently arranged electrolytic units 130 can improve the working stability and reliability of the entire purification device 100. This setting can adjust the parallel number of the second channels 173 according to actual needs to cope with the working requirements of different target media.

[0062] Exemplarily, when in the first state, the seventh valve body 181 and the eighth valve body 182 are connected to each other. When in the second state, the seventh valve body 181 and the eighth valve body 182 are disconnected and are respectively connected to other devices.

[0063] Understandably, please refer to Figure 2, the number of electrolytic units 130 can be multiple, such as 2, 3..., which is not limited in this embodiment. A plurality of electrolytic units 130 are arranged in the first electrode 110 and the second electrode 120, thereby improving the integration of the purification device 100. In the case of the same number of electrolytic units 130, the arrangement of the first electrode 110 and the second electrode 120 is reduced, thereby effectively improving the safety of the use of the purification device 100. The purification device 100 may also include at least one third partition 139, and at least one third partition 139 is arranged between two adjacent electrolytic units 130. The third partition 139 plays a crucial isolation role, which separates the adjacent electrolytic units 130 and ensures that the medium and electrolysis process in each unit are relatively independent. Even if the chamber or a certain medium component of a certain electrolytic unit 130 changes, it is only necessary to close the electrolytic unit 130, and the electric field generated by the first electrode 110 and the second electrode 120 will not change, nor will it have a direct impact on other units. This independence not only improves the stability and reliability of the purification device 100, but also enables the performance of each unit to be fully utilized.

[0064] To achieve the above-mentioned and other related purposes, the present application provides a purification system 1, see Figure 4 The purification system 1 may include at least two purification devices 100 as described above. The number of purification devices 100 may be 2, 3, etc., which is not limited in this embodiment. At least two purification devices 100 are correspondingly arranged and spaced apart. The corresponding arrangement can reduce the volume of the purification system 1 and improve its integration. At least two purification devices 100 can be relatively independent, and the spaced arrangement can provide a certain space for pipeline layout and later maintenance.

[0065] Please continue reading Figure 5 , a plurality of purification devices 100 form a plurality of groups of purification devices 100, and the plurality of groups of purification devices 100 are arranged along a first direction ( Figure 5 L1 in FIG. 1 ) is distributed at intervals, and multiple purification devices 100 of the same group are arranged along the second direction ( Figure 5 The first direction and the second direction intersect. The distribution of the plurality of purification devices 100 is roughly an array distribution, which can be more convenient for installation and maintenance and improve work efficiency. In addition, the array distribution is also more centralized, which helps to reduce the floor space and installation costs. Optionally, each group of purification devices 100 can process the same second medium, and the first channels 153 and / or second channels 173 of the same group can be interconnected to ensure that the target ions in the second medium are transferred to the target medium, further improving the processing effect of the purification system 1.

[0066] In this example, please refer to Figure 4The first electrolysis chambers 142 of the plurality of purification devices 100 are interconnected, and / or the second electrolysis chambers 144 of the plurality of purification devices 100 are interconnected. The second medium can be processed by passing through the plurality of first electrolysis chambers 142 or the plurality of second electrolysis chambers 144 in sequence, which helps to more thoroughly remove the target ions in the second medium, thereby ensuring the processing effect.

[0067] In addition, the first electrolytic chamber 142 and the second electrolytic chamber 144 of the same first channel 153 are interconnected, and / or, multiple first channels 153 of the same purification device 100 can be connected end to end. This arrangement can connect multiple electrolytic chambers of the purification system 1 end to end, which can completely remove the target ions in the second medium, further improving the treatment effect of the purification system 1.

[0068] In this example, please continue to refer to Figure 4 The first medium chambers 145 of the plurality of purification devices 100 are interconnected, and / or the second medium chambers 147 of the plurality of purification devices 100 are interconnected. The target medium can absorb the target ions through the plurality of first medium chambers 145 or the plurality of second medium chambers 147 in sequence, which helps to increase the concentration of the target ions in the target medium, thereby ensuring the treatment effect.

[0069] In addition, the first medium cavity 145 and the second medium cavity 147 of the same second channel 173 are interconnected, and / or, multiple second channels 173 of the same purification device 100 can be connected end to end. This arrangement can connect multiple medium cavities of the purification system 1 end to end, which can further increase the target ion concentration in the target medium.

[0070] It is understandable that, according to the target ion concentration of the second medium, the connection between the first electrolytic chamber 142 and the second electrolytic chamber 144 of the same first channel 153, the connection between multiple first channels 153 of the same purification device 100, and the connection between multiple purification devices 100 are controlled. In addition, based on the target ion concentration of the first medium transfer, the connection between the first medium chamber 145 and the second medium chamber 147 of the same second channel 173, the connection between multiple second channels 173 of the same purification device 100, and the connection between multiple purification devices 100 are controlled, which will not be repeated here.

[0071] This embodiment provides a purification device 100 and a purification system 1, wherein the second medium flows in the first electrolytic chamber 142 and the second electrolytic chamber 144, and the target ions in the second medium can flow into the first electrode chamber 141 through the first monopolar membrane 131 and into the second electrode chamber 143 through the second monopolar membrane 133. The first medium located in the first electrode chamber 141 and the second electrode chamber 143 and the target ions therein flow to the third electrode chamber 146 and the fourth electrode chamber 148, and the target ions flow into the first medium chamber 145 and the fourth monopolar membrane 137 through the third electrode membrane and into the second medium chamber 147, respectively, to form the purified target medium. During this period, there is no need to change the positive and negative electrodes, and only the first medium needs to flow once in the loop 138 to complete the change in the electric field, effectively maintaining the acidity and alkalinity of the first medium and the target medium unchanged. This solution avoids changes in the electrodes while maintaining the pH values ​​of the first medium and the target medium unchanged, effectively improving the reliability and life of the circuit of the purification device 100, reducing the complexity of the equipment and the maintenance cost, and greatly improving the production efficiency and the quality of the effluent.

[0072] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0073] In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0074] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A purification device, characterized in that: include: a first electrode; a second electrode, the second electrode and the first electrode having different polarities and arranged opposite to each other; as well as, at least one electrolysis unit, the electrolysis unit comprising a first monopolar membrane, a first separator, a second monopolar membrane, a bipolar membrane, a third monopolar membrane, a second separator and a fourth monopolar membrane sequentially arranged between the first electrode and the second electrode, forming a first electrode cavity, a first electrolysis cavity, a second electrode cavity, a second electrolysis cavity, a first medium cavity, a third electrode cavity, a second medium cavity and a fourth electrode cavity distributed in a direction from the first electrode to the second electrode; Among them, the first electrode cavity, the second electrode cavity, the third electrode cavity and the fourth electrode cavity are connected in sequence to form a loop, the loop is used to circulate the first medium containing electrolyte, and the loop is provided with a pump body that provides power for the first medium to flow in the loop, the first electrolysis cavity and the second electrolysis cavity are used to circulate the second medium containing target ions, and the first medium cavity and the second medium cavity are used to circulate the purified target medium.

2. The purification device according to claim 1, characterized in that The first electrolysis chamber and the second electrolysis chamber both have a first liquid outlet and a first liquid inlet that are far away from each other, the electrolysis unit further comprises a first conduction component, the first conduction component comprises a first valve body and a second valve body, the first valve body is arranged at the first liquid outlet of the first electrolysis chamber, and the second valve body is arranged at the first liquid inlet of the second electrolysis chamber; When the first valve body and the second valve body are in a first state, the first electrolysis chamber and the second electrolysis chamber are connected in series to form a first channel; When the first valve body and the second valve body are in the second state, the first electrolysis chamber and the second electrolysis chamber are connected in parallel.

3. The purification device according to claim 2, characterized in that The number of the electrolysis units is multiple, the purification device includes at least one second conduction component, each of the second conduction components includes a third valve body and a fourth valve body, the third valve body is arranged at the liquid inlet end of the first electrolysis chamber of one of the two adjacent electrolysis units, and the fourth valve body is arranged at the liquid outlet end of the second electrolysis chamber of the other of the two adjacent electrolysis units; When the third valve body and the fourth valve body are in the first state, the first channels of two adjacent electrolytic units are connected to each other; When the third valve body and the fourth valve body are in the second state, the first channels of two adjacent electrolysis units are connected in parallel.

4. The purification device according to claim 3, characterized in that The first medium cavity and the second medium cavity both have a second liquid outlet and a second liquid inlet that are far away from each other, the purification device comprises a third conduction component, the third conduction component comprises a fifth valve body and a sixth valve body, the fifth valve body is arranged at the second liquid outlet of the first medium cavity, and the sixth valve body is arranged at the second liquid inlet of the second medium cavity; When the fifth valve body and the sixth valve body are in the first state, the first medium chamber and the second medium chamber are connected in series to form a second channel; When the fifth valve body and the sixth valve body are in the second state, the first medium chamber and the second medium chamber are connected in parallel.

5. The purification device according to claim 4, characterized in that The number of the electrolysis units is multiple, the purification device includes at least one fourth conduction component, the fourth conduction component includes a seventh valve body and an eighth valve body, the seventh valve body is arranged at the liquid inlet end of the first electrolysis chamber of one of the two adjacent electrolysis units, and the eighth valve body is arranged at the liquid outlet end of the second electrolysis chamber of the other of the two adjacent electrolysis units; When the seventh valve body and the eighth valve body are in the first state, the second channels of two adjacent electrolytic units are connected to each other; When the seventh valve body and the eighth valve body are in the second state, the second channels of two adjacent electrolytic units are connected in parallel.

6. The purification device according to any one of claims 1 to 5, characterized in that: There are multiple electrolytic units, and the purification device further includes at least one third partition plate, and at least one third partition plate is arranged between two adjacent electrolytic units.

7. The purification device according to any one of claims 1 to 5, characterized in that: When the target ion is a cation, the first monopolar membrane, the second monopolar membrane, the third monopolar membrane and the fourth monopolar membrane are all cationic membranes; when the target ion is a cation, the first monopolar membrane, the second monopolar membrane, the third monopolar membrane and the fourth monopolar membrane are all anionic membranes.

8. A purification system, characterized in that: include: A plurality of purification devices as described in any one of claims 1 to 7, wherein the plurality of purification devices are arranged at intervals.

9. The purification system according to claim 8, characterized in that The plurality of purification devices form a plurality of groups of purification devices, the plurality of groups of purification devices are distributed at intervals along a first direction, and the plurality of purification devices in the same group are distributed along a second direction, and the first direction and the second direction intersect.

10. The purification system according to claim 8, characterized in that The first electrolytic chambers of the plurality of purification devices are interconnected; and / or, the second electrolytic chambers of a plurality of the purification devices are interconnected; and / or, the first medium chambers of a plurality of the purification devices are interconnected; And / or, the second medium chambers of a plurality of the purification devices are interconnected.

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