A dual dielectric barrier discharge pollutant degradation device

Abstract

The present application provides a dual dielectric barrier discharge pollutant degradation device, comprising: a first dielectric plate, the first dielectric plate is tilted, the first dielectric plate is provided with a first water-facing surface; a first groove, the first groove is arranged at intervals on the first water-facing surface; a second dielectric plate, the second dielectric plate is provided with a second water-facing surface, the second water-facing surface and the first water-facing surface are enclosed to form a closed processing space; a second groove, the second groove is arranged at intervals on the second water-facing surface, the first groove on the first water-facing surface and the second groove on the second water-facing surface are staggered; a first electrode, the first electrode is grounded, the first electrode is arranged on the side of the first dielectric plate away from the first water-facing surface; a second electrode, the second electrode is electrically connected to a power supply, and the second electrode is arranged on the side of the second dielectric plate away from the second water-facing surface. The present invention helps to treat wastewater and waste gas more efficiently and environmentally friendly, reduce environmental pollution, and promote sustainable development.

Description

Technical Field

[0001] The present application relates to the technical field of pollutant treatment, and in particular to a double dielectric barrier discharge pollutant degradation device. Background Art

[0002] Discharge plasma technology is an advanced technology that uses active particles such as high-energy electrons, ions and free radicals to treat pollutants. This technology has attracted attention in the control and purification of urban wastewater and waste gas, pharmaceutical wastewater and waste gas, mining wastewater and waste gas, and textile wastewater and waste gas due to its high efficiency and environmental friendliness. At the same time, various discharge plasma reactors have emerged to meet different application requirements. Among them, the thin-film dielectric barrier discharge reactor combines the dielectric barrier discharge technology with the characteristics of the thin film. It is widely used by forming a circulating water film, air film, etc. between the electrodes to enhance the gas-liquid and gas-gas contact area and improve the reaction efficiency.

[0003] However, although predecessors have conducted a lot of research on water treatment using thin-film dielectric barrier discharge reactors, there are still some shortcomings. The main manifestations are: water film and air film are usually formed on smooth dielectric plates, the flow speed is too fast, and the contact time between pollutants and active particles generated by discharge is too short, resulting in low degradation efficiency; thin-film dielectric barrier discharge reactors usually use flat plates and columnar high-voltage poles, with no targeted discharge, omnidirectional discharge, high energy consumption and easy to cause energy waste. Dielectric barrier discharge mostly uses a single dielectric plate. Although it can effectively suppress the generation of local sparks or arcs, it still has a higher starting voltage and lower discharge power, and consumes more energy. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] To this end, the present application proposes a dual-dielectric barrier discharge pollutant degradation device, comprising: a first dielectric plate, the first dielectric plate is tilted and provided with a first water-facing surface; a first groove, the first groove is spaced apart and provided on the first water-facing surface; a second dielectric plate, the second dielectric plate is provided with a second water-facing surface, the second water-facing surface and the first water-facing surface are enclosed to form a closed processing space; a second groove, the second groove is spaced apart and provided on the second water-facing surface, the first groove on the first water-facing surface and the second groove on the second water-facing surface are staggered; a first electrode, the first electrode is grounded and provided on a side of the first dielectric plate away from the first water-facing surface; a second electrode, the second electrode is electrically connected to a power supply and provided on a side of the second dielectric plate away from the second water-facing surface.

[0006] In a possible technical solution, further, in this technical solution, the second dielectric plate is arranged in parallel with the first dielectric plate.

[0007] In a possible technical solution, further, in the technical solution, it also includes:

[0008] A third groove, the third groove is arranged at a distance on a side of the first dielectric plate away from the first water-facing surface, and the third groove is staggered with the first groove;

[0009] A first inner concave portion, the first inner concave portion is arranged at intervals from the first electrode to fit the third groove of the first dielectric plate;

[0010] A fourth groove, the fourth groove is arranged at a distance on a side of the second dielectric plate away from the second water-facing surface, and the fourth groove is staggered with the second groove;

[0011] The second inner concave portion is arranged at intervals from the second electrode to fit the fourth groove of the second dielectric plate.

[0012] In a possible technical solution, further, in the technical solution, it also includes:

[0013] A first storage box, the first storage box is connected to the closed processing space, and the first storage box is located at one end of the first medium plate;

[0014] The second storage box is connected to the closed processing space and is located at the other end of the first medium plate.

[0015] In a possible technical solution, further, in the technical solution, it also includes:

[0016] A water inlet, the water inlet is connected to the first storage box;

[0017] A water outlet, the water outlet being connected to a second storage box;

[0018] The pump body is connected with a water inlet and a water outlet through a pipeline.

[0019] In a possible technical solution, further, in the technical solution, it also includes:

[0020] A first solenoid valve, which is arranged on a connecting pipe between the pump body and the water inlet;

[0021] The second solenoid valve is arranged on the connecting pipe between the pump body and the water outlet.

[0022] In a possible technical solution, further, in the technical solution, it also includes:

[0023] An air inlet, the air inlet being connected to the first storage box;

[0024] An air outlet, the air outlet being connected to the second storage box;

[0025] A compressor is connected with an air inlet and an air outlet through a pipeline.

[0026] In a possible technical solution, further, in the technical solution, it also includes:

[0027] The third solenoid valve is arranged on the connecting pipe between the compressor and the air inlet.

[0028] In a possible technical solution, further, in the technical solution, the cross-sectional shape of the first groove and / or the second groove is an arc;

[0029] Or, the cross-sectional shape of the first groove and / or the second groove is rectangular;

[0030] Alternatively, the cross-sectional shape of the first groove and / or the second groove is a triangle.

[0031] In a possible technical solution, further, in the technical solution, it also includes:

[0032] The monitoring component is used to monitor the current between the first electrode and the power supply.

[0033] Additional aspects and advantages of the present application will become apparent in the following description or will be learned through practice of the present application.

[0034] In the present application, by setting up a closed processing space, the dual dielectric barrier discharge pollutant degradation device can also treat waste gas. Since the first dielectric plate and the second dielectric plate enclose a closed processing space, no leakage will occur when treating waste gas, and when treating wastewater, the wastewater is always in the closed processing space, thereby ensuring that there will be no short circuit or the like due to the fluctuation of the wastewater flow. Preferably, when treating wastewater, the wastewater cannot completely fill the closed processing space to ensure that air enters, or a certain amount of air is introduced while treating wastewater. A discharge area is formed between the first dielectric plate and the second dielectric plate by setting up a first electrode, a power supply, and a second electrode. The discharge area covers the closed processing space. When wastewater or waste gas enters the closed processing space, that is, enters the discharge area, various active substances will be generated in the discharge area, and various active substances are degraded in the wastewater or waste gas to be degraded, thereby achieving the treatment of wastewater or waste gas. Preferably, the power supply is an AC high-voltage power supply. Grooves are cut on the smooth first dielectric plate and the second dielectric plate to form the first groove and the second groove, so that the specific surface area of ​​the first dielectric plate and the second dielectric plate can be increased, the residence time of the wastewater or waste gas can be extended, the contact area between the wastewater or waste gas and the active particles can be expanded, and the degradation efficiency of the wastewater or waste gas can be greatly improved. By setting the first dielectric plate and the second dielectric plate, the wastewater can flow stably in the closed treatment space, and the gap between the second electrode and the wastewater can be ensured to avoid large fluctuations in the discharge gap due to water flow fluctuations. The dual dielectric barrier discharge pollutant degradation device proposed in this embodiment helps to treat wastewater and waste gas more efficiently and environmentally friendly, reduce environmental pollution, and promote sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0036] Figure 1 A three-dimensional structural diagram of a dual dielectric barrier discharge pollutant degradation device of the present application is shown;

[0037] Figure 2 A schematic diagram of a dual dielectric barrier discharge pollutant degradation device of the present application is shown;

[0038] Figure 3 Shows Figure 2 A partial enlarged view of part A in the middle.

[0039] in, Figures 1 to 3 The corresponding relationship between the reference numerals and the component names is as follows:

[0040] The first storage box 1, the air inlet 2, the overflow port 3, the second medium plate 4, the second groove 41, the fourth groove 42, the second storage box 5, the air outlet 6, the water outlet 7, the compressor 8, the third solenoid valve 9, the second solenoid valve 10, the pump body 11, the first solenoid valve 12, the water inlet 13, the first medium plate 14, the first groove 141, and the third groove 142.

[0041] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0042] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0043] Refer to the following Figures 1 to 3 A dual dielectric barrier discharge pollutant degradation device provided according to some embodiments of the present application is described.

[0044] Example

[0045] like Figure 1 , Figure 2 and Figure 3 As shown, this embodiment discloses a dual dielectric barrier discharge pollutant degradation device, including: a first dielectric plate 14, the first dielectric plate 14 is tilted, and the first dielectric plate 14 is provided with a first water-facing surface; a first groove 141, the first groove 141 is arranged at intervals on the first water-facing surface; a second dielectric plate 4, the second dielectric plate 4 is provided with a second water-facing surface, and the second water-facing surface and the first water-facing surface are enclosed to form a closed processing space; a second groove 41, the second groove 41 is arranged at intervals on the second water-facing surface, and the first groove 141 on the first water-facing surface is staggered with the second groove 41 on the second water-facing surface; a first electrode, the first electrode is grounded, and the first electrode is arranged on a side of the first dielectric plate 14 away from the first water-facing surface; a second electrode, the second electrode is electrically connected to a power supply, and the second electrode is arranged on a side of the second dielectric plate 4 away from the second water-facing surface.

[0046] Specifically, the first dielectric plate 14 is inclined so that the wastewater will flow down from the dielectric plate and form a water film on the surfaces opposite to the first dielectric plate 14 and the second dielectric plate 4. The first water-facing surface and the second water-facing surface are the surfaces of the first dielectric plate 14 and the second dielectric plate 4 that are in contact with the wastewater. Preferably, the inclination angle of the first dielectric plate 14 is greater than 0° and less than 90°. The first dielectric plate 14 and the second dielectric plate 4 are enclosed to form a closed processing space, that is, the first dielectric plate 14 has two side plates connected to the second dielectric plate 4 in addition to the first water-facing surface to form a closed processing space. Of course, the side plates can also be arranged on the second dielectric plate 4, or one is arranged on the first dielectric plate 14 and the other is arranged on the second dielectric plate 4, and no specific restrictions are imposed on them. By setting up a closed processing space, the dual dielectric barrier discharge pollutant degradation device can also treat waste gas. Since the first dielectric plate 14 and the second dielectric plate 4 are enclosed to form a closed processing space, no leakage will occur when treating waste gas, and when treating waste water, the waste water is always in the closed processing space, thereby ensuring that there will be no short circuit or the like due to the fluctuation of the flow of waste water. Preferably, when treating wastewater, the wastewater cannot completely fill the closed treatment space to ensure that air enters, or a certain amount of air is introduced while treating the wastewater. An irregular discharge area is formed between the first dielectric plate 14 and the second dielectric plate 4 by setting a first electrode, a power supply and a second electrode. Preferably, the first electrode is located at the lower side and is a grounding electrode, and the second electrode is located at the upper side and is a high-voltage electrode. The discharge area covers the closed treatment space. When the wastewater or waste gas enters the closed treatment space, that is, enters the discharge area, various active substances will be generated in the discharge area. Various active substances are degraded in the wastewater or waste gas to be degraded, thereby achieving the treatment of the wastewater or waste gas. Preferably, the power supply is an AC high-voltage power supply, the voltage peak of the power supply is 11-16kV, and the discharge frequency of the power supply is 5000-8000Hz. The optimal voltage peak and the optimal discharge frequency can be selected according to actual conditions. Grooves are cut on the smooth first dielectric plate 14 and the second dielectric plate 4 to form the first groove 141 and the second groove 41, so that the specific surface area of ​​the first dielectric plate 14 and the second dielectric plate 4 can be increased, the residence time of the wastewater or waste gas can be extended, the contact area between the wastewater or waste gas and the active particles can be expanded, and the degradation efficiency of the wastewater or waste gas can be greatly improved. By setting the first dielectric plate 14 and the second dielectric plate 4, the wastewater can flow stably in the closed treatment space, and the gap between the second electrode and the wastewater can be ensured to avoid large fluctuations in the discharge gap due to water flow fluctuations. The dual dielectric barrier discharge pollutant degradation device proposed in this embodiment helps to treat wastewater and waste gas more efficiently and environmentally friendly, reduce environmental pollution, and promote sustainable development.

[0047] In this embodiment, the first dielectric plate 14 and the second dielectric plate 4 are made of materials with insulating properties such as alumina ceramics or quartz. The distance between the first dielectric plate 14 and the second dielectric plate 4 can be adjusted according to actual needs to change the discharge area. The cross-section of the first groove 141 and the second groove 41 can be any one of semicircular, rectangular, triangular, etc. Taking the rectangular first groove 141 as an example, 20 first grooves 141 are engraved on the 50mm wide first dielectric plate 14, and the size of the first groove 141 is 2mm×3mm. Compared with the smooth first dielectric plate 14, the surface area increased by a single first groove 141 is 300mm 2 , 20 first grooves 141 increase the surface area 6000mm 2 . And the surface area increases with the increase of the depth and width of the first groove 141, which greatly prolongs the residence time of the waste gas or wastewater, expands the contact area between the waste gas or wastewater and the active particles, and improves the degradation efficiency during the waste gas or wastewater treatment process. In this embodiment, the calculation method of the degradation efficiency is:

[0048]

[0049] Where: is the initial concentration of wastewater or exhaust gas, It is the concentration of wastewater and waste gas after experimental treatment. The maximum absorption wavelength of waste gas or wastewater is measured by ultraviolet spectrophotometer, and the concentration of pollutants in wastewater or waste gas is measured by high performance liquid chromatography and gas chromatography. During the treatment process, the effect of the initial concentration of wastewater or waste gas on the discharge degradation efficiency can also be explored according to the initial concentration of wastewater or waste gas. And according to the degradation efficiency under different wastewater or waste gas flow rates, the optimal wastewater or waste gas flow rate is determined.

[0050] Furthermore, the second dielectric plate 4 is arranged in parallel with the first dielectric plate 14 , and by making the second dielectric plate 4 and the first dielectric plate 14 parallel, the flow process of the wastewater between the second dielectric plate 4 and the first dielectric plate 14 is made smoother, and the discharge is made more uniform.

[0051] Furthermore, it also includes: a third groove 142, the third groove 142 is arranged at intervals on the side of the first dielectric plate 14 away from the first water-facing surface, and the third groove 142 is staggered with the first groove 141; a first concave portion, the first concave portion is arranged at intervals on the first electrode to adapt to the third groove 142 of the first dielectric plate 14; a fourth groove 42, the fourth groove 42 is arranged at intervals on the side of the second dielectric plate 4 away from the second water-facing surface, and the fourth groove 42 is staggered with the second groove 41; a second concave portion, the second concave portion is arranged at intervals on the second electrode to adapt to the fourth groove 42 of the second dielectric plate 4, the first electrode is provided with a first concave portion adapted to the third groove 142 of the first dielectric plate 14, so that the first electrode can fit the side of the first dielectric plate 14 away from the first water-facing surface, and the second electrode is provided with a second concave portion adapted to the fourth groove 42 of the second dielectric plate 4, so that the second electrode can fit the side of the second dielectric plate 4 away from the second water-facing surface. By using a first electrode that matches the first dielectric plate 14 and a second electrode that matches the second dielectric plate 4, combined with the characteristics that the first dielectric plate 14 is provided with a first groove 141 and the second dielectric plate 4 is provided with a second groove 41, the first electrode and the second electrode are uniformly and targetedly discharged, and the energy consumption during the discharge process is reduced. In this way, the energy can be pushed from the plane of the first water-facing surface to the first groove 141 autonomously, reducing energy consumption and avoiding energy waste. Specifically, the discharge area of ​​the first electrode and the second electrode is concentrated on the plane of the first water-facing surface between the two first grooves 141, so that the electric field is enhanced at the plane of the first water-facing surface, and then with the help of the internal fluidity of the first groove 141, it is possible to achieve a smaller voltage to push the streamer forward during the discharge process, reducing the energy consumption during the discharge process. And it can achieve a lower starting discharge voltage, a higher discharge power and a more stable discharge characteristic. It is helpful to treat wastewater and waste gas more efficiently and environmentally friendly, reduce environmental pollution, and promote sustainable development. The first electrode and the second electrode are preferably made of materials with excellent shape ductility and conductivity, such as aluminum foil, copper foil, etc.

[0052] like Figure 2As shown, it further includes: a first storage box 1, the first storage box 1 is connected to the closed processing space, and the first storage box 1 is located at one end of the first medium plate 14; a second storage box 5, the second storage box 5 is connected to the closed processing space, and the second storage box 5 is located at the other end of the first medium plate 14. The first storage box 1 is used to store wastewater or waste gas, and the second storage box 5 is used to store treated wastewater or waste gas. The first storage box 1 and the second storage box 5 are respectively arranged at the two ends of the closed treatment space. The following will specifically describe the method of connecting the first storage box 1 and the second storage box 5 with the closed treatment space. The method of connecting the first storage box 1 with the closed treatment space is as follows: the first storage box 1 has a roughly rectangular overflow port 3, one long side of the overflow port 3 is connected to the side of the first medium plate 14 parallel to the first water-facing surface, the other long side of the overflow port 3 is connected to the side of the second medium plate 4 parallel to the second water-facing surface, and the short side of the overflow port 3 is connected to two side edges. As for whether the two side edges are specifically connected to the first medium plate 14 or the second medium plate 4, no specific limitation is made here. The above-mentioned connection method includes bonding, welding and other connection methods, and the connection between the first storage box 1 and the closed treatment space is achieved through the above-mentioned connection operation. The method of connecting the second storage box 5 with the closed processing space is similar to that of the first storage box 1 , and reference may be made to the method of connecting the first storage box 1 with the closed processing space, which will not be repeated here.

[0053] Furthermore, it also includes: a water inlet 13, the water inlet 13 is connected to the first storage box 1; a water outlet 7, the water outlet 7 is connected to the second storage box 5; a pump body 11, the pump body 11 is connected to the water inlet 13 and the water outlet 7 through a pipeline. After the wastewater flows from the first storage box 1 to the second storage box 5, under the action of the pump body 11, it is pumped back to the first storage box 1 by the second storage box 5, forming a circulating water film in the closed treatment space to achieve the treatment of the wastewater. The wastewater may include pharmaceutical wastewater, mining wastewater, etc., such as pharmaceutical wastewater containing tetracycline hydrochloride, mineral processing wastewater containing hydroxamic acid agents, etc.

[0054] Furthermore, it also includes: a first solenoid valve 12, which is arranged on the connecting pipe between the pump body 11 and the water inlet 13; and a second solenoid valve 10, which is arranged on the connecting pipe between the pump body 11 and the water outlet 7. The connecting pipe between the pump body 11 and the water inlet 13 is controlled by the first solenoid valve 12, and the connecting pipe between the pump body 11 and the water outlet 7 is controlled by the second solenoid valve 10. The first solenoid valve 12 and the second solenoid valve 10 are arranged to conveniently control the liquid circulation of the wastewater, so as to facilitate the adjustment of the wastewater water level in the first storage box 1 and the second storage box 5 to avoid the water level being too high. In the event of an abnormal situation, the first solenoid valve 12 and the second solenoid valve 10 can also be used to quickly cut off the liquid circulation of the wastewater.

[0055] Furthermore, it also includes: an air inlet 2, which is connected to the first storage box 1; an air outlet 6, which is connected to the second storage box 5; a compressor 8, which is connected to the air inlet 2 and the air outlet 6 through a pipeline. The compressor 8 is used to draw the exhaust gas into the air inlet 2, thereby entering the closed treatment space, and then the gas in the second storage box 5 is drawn to the first storage box 1 through the compressor 8 and the air outlet 6, so as to realize the recycling treatment of the exhaust gas. Preferably, in the process of treating wastewater, fresh air is pumped into the closed treatment space through the compressor 8, and the ventilation flow rate of the compressor 8 is adjusted to determine the influence of the ventilation flow rate on the wastewater treatment efficiency, so as to determine the optimal ventilation flow rate. The exhaust gas may include volatile organic pollutants VOCs.

[0056] Furthermore, it also includes: a third solenoid valve 9, which is arranged on the connecting pipe between the compressor 8 and the air inlet 2. The third solenoid valve 9 is used to control the connection and closing of the connecting channel between the compressor 8 and the air inlet 2. When an abnormal situation occurs, the third solenoid valve 9 can be used to stop the circulation of the exhaust gas.

[0057] Further, the cross-sectional shape of the first groove 141 and / or the second groove 41 is an arc; or, the cross-sectional shape of the first groove 141 and / or the second groove 41 is a rectangle; or, the cross-sectional shape of the first groove 141 and / or the second groove 41 is a triangle. The specific cross-sectional shape of the first groove 141 and / or the second groove 41 is not limited here, and it can meet the requirement of increasing the relative specific surface area of ​​the first dielectric plate 14 and / or the second dielectric plate 4. Preferably, the cross-sectional shape of the first groove 141 and / or the second groove 41 is a rectangle. The cross-sectional shape of the third groove 142 is similar to that of the first groove 141, and the cross-sectional shape of the fourth groove 42 is similar to that of the second groove 41.

[0058] Furthermore, it also includes: a monitoring component, which is used to monitor the current between the first electrode and the power supply. The monitoring component includes a voltage probe, a test capacitor, a current probe and a digital oscilloscope, and the monitoring component is used to monitor the current to ensure the stability of the current during the water treatment process.

[0059] like Figure 2 As shown, in this embodiment, a specific implementation is provided, the material of the first storage box 1 and the second storage box 5 is acrylic, the second electrode is adhered to the side of the second dielectric plate 4 away from the second water-facing surface, the first electrode is adhered to the side of the first dielectric plate 14 away from the first water-facing surface, the cross-sectional shape of the first groove 141 and the second groove 41 is rectangular, the compressor 8 is connected to the air inlet 2 and the air outlet 6, one side of the power supply is connected to the second electrode through a wire, the other side of the power supply is connected to the monitoring component through a wire, and the pump body 11 is connected to the water inlet 13 and the water outlet 7 through a pipe.

[0060] The running direction of the wastewater of the entire pollutant degradation device is: the wastewater enters from the water inlet 13, flows into the closed treatment space after reaching a certain liquid level in the first storage tank 1, and after discharge degradation, flows into the second storage tank 5 driven by the pump body 11 and flows out through the water outlet 7.

[0061] The operation direction of the exhaust gas of the entire pollutant degradation device is as follows: the exhaust gas enters from the air inlet 2, is blown into the closed treatment space in the first storage box 1, and after discharge and degradation, is blown into the second storage box 5 driven by the compressor 8 and discharged through the air outlet 6.

[0062] In this application, the term "plurality" means two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0063] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0064] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A dual dielectric barrier discharge pollutant degradation device, characterized in that: include: a first medium plate (14), the first medium plate (14) being arranged obliquely, and the first medium plate (14) being provided with a first water-facing surface; first grooves (141), the first grooves (141) being arranged at intervals on the first water-facing surface; A second medium plate (4), the second medium plate (4) being provided with a second water-facing surface, the second water-facing surface and the first water-facing surface enclosing to form a closed processing space; Second grooves (41), the second grooves (41) being arranged at intervals on the second water-facing surface, the first grooves (141) on the first water-facing surface and the second grooves (41) on the second water-facing surface being arranged in a staggered manner; a third groove (142), the third groove (142) being arranged at intervals on a side of the first dielectric plate (14) away from the first water-facing surface, the third groove (142) being arranged in an offset manner from the first groove (141); A first inner concave portion, the first inner concave portion being arranged at intervals from the first electrode to fit the third groove (142) of the first dielectric plate (14); a fourth groove (42), the fourth groove (42) being arranged at intervals on a side of the second dielectric plate (4) away from the second water-facing surface, the fourth groove (42) being arranged in an offset manner from the second groove (41); A second inner concave portion, the second inner concave portion being arranged at intervals from the second electrode to fit the fourth groove (42) of the second dielectric plate (4); A first storage box (1), the first storage box (1) being connected to the closed processing space, the first storage box (1) being located at one end of the first medium plate (14); a second storage box (5), the second storage box (5) being connected to the closed processing space, the second storage box (5) being located at the other end of the first medium plate (14); A water inlet (13), the water inlet (13) being connected to the first storage box (1); A water outlet (7), the water outlet (7) being connected to the second storage box (5); A pump body (11), wherein the pump body (11) is connected to the water inlet (13) and the water outlet (7) via a pipeline; An air inlet (2), the air inlet (2) being connected to the first storage box (1); An air outlet (6), the air outlet (6) being connected to the second storage box (5); A compressor (8), the compressor (8) being connected to the air inlet (2) and the air outlet (6) via a pipeline; A first electrode, the first electrode is grounded, and the first electrode is arranged on a side of the first dielectric plate (14) away from the first water-facing surface; A second electrode, the second electrode is electrically connected to a power source, and the second electrode is arranged on a side of the second dielectric plate (4) away from the second water-facing surface.

2. The dual dielectric barrier discharge pollutant degradation device according to claim 1 is characterized in that: The second dielectric plate (4) is arranged in parallel with the first dielectric plate (14).

3. The double dielectric barrier discharge pollutant degradation device according to claim 1 is characterized in that: Also includes: a first solenoid valve (12), the first solenoid valve (12) being arranged on a connecting pipe between the pump body (11) and the water inlet (13); A second solenoid valve (10), wherein the second solenoid valve (10) is arranged on a connecting pipe between the pump body (11) and the water outlet (7).

4. The dual dielectric barrier discharge pollutant degradation device according to claim 1, characterized in that: Also includes: A third solenoid valve (9), the third solenoid valve (9) being arranged on a communication pipe between the compressor (8) and the air inlet (2).

5. The dual dielectric barrier discharge pollutant degradation device according to claim 1, characterized in that: The cross-sectional shape of the first groove (141) and / or the second groove (41) is an arc; Or, the cross-sectional shape of the first groove (141) and / or the second groove (41) is rectangular; Alternatively, the cross-sectional shape of the first groove (141) and / or the second groove (41) is a triangle.

6. The double dielectric barrier discharge pollutant degradation device according to claim 1, characterized in that: Also includes: A monitoring component is used to monitor the current between the first electrode and the power supply.

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