CN219929704U - Double-grounding-electrode multi-high-voltage and low-temperature plasma pesticide wastewater treatment device - Google Patents

Abstract

The utility model provides a double-grounding-electrode high-voltage extremely-low-temperature plasma pesticide wastewater treatment device, which comprises; a reactor housing; the internal electrode medium cylinder is arranged in the reactor shell and is connected with the reactor shell; the inner grounding electrode is inserted into the inner grounding electrode medium cylinder and connected with the grounding electrode; the high-voltage electrode medium cylinder is connected with the reactor shell; each high-voltage electrode is inserted into the high-voltage electrode medium barrel and connected with the high-voltage electrode medium barrel; the external grounding electrode is arranged on the outer side of the reactor shell and is connected with the reactor shell; the spraying device is connected with the upper end of the reactor shell; the circulating device is arranged between the reactor shell and the spraying device and is respectively connected with the reactor shell and the spraying device through connecting pipelines. The utility model increases the volume and the output power of the low-temperature plasma reactor by arranging the internal grounding electrode, the plurality of high-voltage electrodes and the external grounding electrode, thereby increasing the degradation capability to pesticide wastewater.

Description

A double grounded pole multi-high voltage and extremely low temperature plasma pesticide wastewater treatment device

Technical field

The utility model belongs to the technical field of wastewater treatment equipment, and particularly relates to a double grounded pole multi-high voltage and extremely low temperature plasma pesticide wastewater treatment device.

Background technique

Clean water plays a vital role in human survival and even the entire ecosystem, but pesticide residues in water seriously affect the quality of water, which is worrying. Long-term drinking of water containing pesticides will cause pesticides to simulate human hormones, reduce human immunity, disrupt hormone balance, cause reproductive-related problems, cause carcinogenic effects, and reduce intelligence, especially for children in the physical development stage. Plasma discharge in contact with water is a promising new technology because it can produce a wide range of oxidizing species.

The traditional pesticide wastewater treatment device has a small discharge gap, which makes the low-temperature plasma reactor small in size, low in output power and low in energy utilization.

For this reason, in view of the above technical problems, it is necessary to study a double grounded pole high-pressure and extremely low-temperature plasma pesticide wastewater treatment device.

Utility model content

The purpose of this utility model is to provide a double grounded pole multi-high voltage and extremely low temperature plasma pesticide wastewater treatment device. The arrangement of the inner ground pole - multiple high voltage electrodes - the external ground pole can increase the distance between the ground pole and the high voltage electrode in the reactor. The discharge gap is used to solve the technical problems in the existing technology that the plasma generated by the low-temperature plasma reactor is small, the output power is small, and the energy utilization rate is low.

The utility model provides a double-grounded multi-high-pressure and extremely low-temperature plasma pesticide wastewater treatment device, which includes a low-temperature plasma reactor, a spray device and a circulation device, a low-temperature plasma reactor shell; an inner ground-pole dielectric cylinder, located in Inside the low-temperature plasma reactor shell and connected to the low-temperature plasma reactor shell; the inner ground electrode is inserted into the inner ground electrode dielectric cylinder and connected to the ground electrode; the high-voltage electrode dielectric cylinder contains multiple high-voltage electrodes The dielectric cylinder is arranged between the inner ground electrode dielectric cylinder and the low-temperature plasma reactor shell, and is connected to the low-temperature plasma reactor shell; high-voltage electrodes, each high-voltage electrode is plugged into the interior of the high-voltage electrode dielectric cylinder, and It is connected to the high-voltage electrode dielectric cylinder; the external ground electrode is arranged outside the low-temperature plasma reactor shell and connected to the low-temperature plasma reactor shell; the spray device is arranged close to the low-temperature plasma reactor shell. One side is connected to the upper end of the low-temperature plasma reactor shell; the circulation device is arranged between the low-temperature plasma reactor shell and the spray device, and is connected to the low-temperature plasma reactor shell and the spray device through connecting pipes. Spray device is connected.

Optionally, the low-temperature plasma reactor shell includes: a base with a first cavity inside; a flange, which is disposed on the top of the base and connected to the upper surface of the base; and an external medium, which is disposed on the upper part of the flange. , and is connected to the flange, and a second cavity is provided inside the external medium; the first ferrule seat is arranged in the middle of the flange, is connected to the flange, and communicates with the first cavity and the second cavity; The second ferrule holder is arranged between the first ferrule holder and the external medium, is connected to the flange, and communicates with the first cavity and the second cavity. The number of the second ferrule holder is determined by the number of the high-voltage electrode dielectric cylinder. The number is the same; the water outlet of the low-temperature plasma reactor is located on the flange and is close to the second ferrule seat.

Optionally, it also includes: a filler layer, which is arranged inside the outer medium and connected with the outer medium.

Optionally, the inner ground electrode dielectric cylinder includes: a first ferrule, which is disposed on the outer surface of the inner ground electrode dielectric cylinder and is adapted to the first ferrule holder.

Optionally, the high-voltage electrode dielectric cylinder includes: a second ferrule, which is disposed on the outer surface of the high-voltage electrode dielectric cylinder and is adapted to the second ferrule holder.

Optionally, the spray device includes: a device body, located on the side close to the external medium; a nozzle, located between the external medium and the device body, and connected to the upper end of the external medium; and a spray device water inlet, located on the device body. Close to the side of the circulation device and connected to the circulation device through connecting pipes.

Optionally, the circulation device includes: a circulation device main body; a circulation device water inlet, which is disposed on the side of the circulation device body and is connected to the low-temperature plasma reactor water outlet through a connecting pipe; and a circulation device water outlet, which is connected to the circulation device inlet. The water inlets are arranged adjacent to each other and are connected to the water inlet of the spray device through connecting pipes.

Optionally, the high-voltage electrodes are connected in parallel to the power supply.

Optionally, the inner ground electrode and the outer ground electrode are connected to the ground electrode in parallel.

Compared with the existing technology, this utility model provides a double grounding pole multi-high voltage and extremely low temperature plasma pesticide wastewater treatment device. The low temperature plasma reactor in the utility model forms an internal grounding pole - multiple high voltage electrodes - an external connection. The arrangement of the ground electrode increases the plasma generation space in the low-temperature plasma reactor, thereby increasing the volume of the low-temperature plasma reactor. The arrangement of the inner ground electrode - multiple high-voltage electrodes - the external ground electrode increases the stability of the reactor discharge. properties, thereby increasing the output power and energy utilization of the reactor, which is more conducive to the production of OH ^- , O ^2- , H ⁺ active ions and O ₃ , H ₂ O ₂ active molecules in the low-temperature plasma reactor. Active ions and active molecules have strong oxidizing properties. The setting of spray devices and fillers increases the contact surface area and contact time between free radicals and wastewater, thereby degrading pollutants through the strong oxidation of these active ions and active molecules. , increasing the degradation ability of pesticide wastewater.

Description of the drawings

The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown in an illustrative and non-restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

Figure 1 is a schematic structural diagram of the utility model's double grounded multi-pole high-pressure and extremely low-temperature plasma pesticide wastewater treatment device;

Figure 2 is a schematic front view of the double-grounded multi-pole high-pressure and extremely low-temperature plasma pesticide wastewater treatment device of the present invention;

Figure 3 is a schematic top view of the utility model's double-grounded multi-pole high-pressure and extremely low-temperature plasma pesticide wastewater treatment device;

Figure 4 is a schematic structural diagram of the inner ground electrode and the inner ground dielectric cylinder in the double ground pole multi-high voltage and extremely low temperature plasma pesticide wastewater treatment device of the present invention;

Figure 5 is a schematic structural diagram of the high-voltage electrode and the high-voltage electrode dielectric cylinder in the double-grounded multi-high-voltage and extremely low-temperature plasma pesticide wastewater treatment device of the present invention;

Figure 6 is a schematic structural diagram of the flange in the double grounded multi-pole high-pressure and extremely low-temperature plasma pesticide wastewater treatment device of the present invention.

Explanation of reference numbers:

1. Low-temperature plasma reactor; 2. Spray device; 3. Circulation device; 4. Ground electrode; 5. Base; 6. Internal ground electrode dielectric cylinder; 7. Internal ground electrode; 8. Water outlet of low-temperature plasma reactor ; 9. High-voltage electrode; 10. Flange; 11. High-voltage electrode dielectric cylinder; 12. External ground electrode; 13. Filling layer; 14. Nozzle; 15. Water inlet of spray device; 16. Water inlet of circulation device; 17. Circulation Device water outlet; 18, power supply; 19, first card sleeve; 20, second card sleeve, 21, external medium; 22, outlet; 23, first card sleeve seat; 24, second card sleeve seat; 25, fixed hole.

Detailed ways

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a thorough understanding of the disclosure, and to fully convey the scope of the disclosure to those skilled in the art. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.

It should be noted that, unless otherwise stated, the technical terms or scientific terms used in the present invention should have the usual meanings understood by those skilled in the art to which the present invention belongs. In this document, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or sequence. The terms "connection" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or a direct connection. It can be indirectly connected through an intermediary. The terms "comprises," "comprises," or any other variation thereof are intended to cover a non-exclusive inclusion such that a process, method, article or apparatus including a list of elements includes not only those elements but also others not expressly listed elements, or elements inherent to such process, method, article or equipment. Without further limitation, an element defined by the statement "comprising..." does not exclude the presence of additional identical elements in a process, method, article, or device that includes the stated element.

The utility model provides a double grounded pole multi-high-pressure and extremely low-temperature plasma pesticide wastewater treatment device, which includes a low-temperature plasma reactor 1, a spray device 2 and a circulation device 3, a reactor shell; an inner grounded pole medium cylinder 6, in the reactor shell and connected to the reactor shell; the inner ground electrode 7 is inserted into the inner ground electrode dielectric cylinder 6 and connected to the inner ground electrode 7; the high-voltage electrode dielectric cylinder 11 has multiple high-voltage electrodes The dielectric cylinder 11 is arranged between the inner ground electrode dielectric cylinder 6 and the reactor shell, and is connected to the reactor shell; high-voltage electrodes 9, each high-voltage electrode 9 is plugged into the interior of the high-voltage electrode dielectric cylinder 11, and is connected to the reactor shell. The high-voltage electrode dielectric cylinder 11 is connected; the external ground electrode 12 is arranged outside the reactor shell and connected to the reactor shell; the spray device 2 is arranged on the side close to the reactor shell and connected to the reactor shell. The upper end of the shell is connected; the circulation device 3 is arranged between the reactor shell and the spray device 2, and is connected to the reactor shell and the spray device 2 through connecting pipelines.

The low-temperature plasma reactor 1 in this embodiment forms an arrangement of an internal ground electrode 7 - a plurality of high-voltage electrodes 9 - an external ground electrode 12, which increases the plasma generation space in the low-temperature plasma reactor 1, thereby increasing the number of low-temperature plasmas. The volume of the reactor and the arrangement of multiple electrodes increase the discharge stability of the low-temperature plasma reactor 1, thereby increasing the output power and energy utilization of the low-temperature plasma reactor 1, which is more conducive to low-temperature plasma reactions. OH ^- , O ^2- , H ⁺ active ions and O ₃ , H ₂ O ₂ active molecules are generated in the device. These active ions and active molecules have strong oxidizing properties. With the setting of the spray device 2 and the packing layer 13, that is It increases the contact specific surface area and contact time between free radicals and wastewater, thereby degrading pollutants through the strong oxidation of these active ions and active molecules, and increasing the degradation ability of pesticide wastewater.

For example, the spray device 2 is filled with wastewater, which evenly enters the low-temperature plasma reactor 1 through the nozzle 14 . Through the form of spray, the wastewater can be sprayed into fine droplets, which can evenly react with the charged particles and ultraviolet light generated in the low-temperature plasma reactor 1, and can increase the specific surface area of the reaction contact and receive it more evenly. Electron bombardment of plasma. The sprayed small mist droplets will pass through the filler layer 13. The addition of the filler layer 13 not only increases the contact surface area between the active particles and the pollutant molecules in the wastewater, but also refines the pollutant molecules in the wastewater, improving the mass transfer effect and purification. Abilities are greatly improved. The filler layer 13 is polarized in the plasma region, resulting in an enhanced electric field, which is conducive to the generation of high-energy electrons. The addition of the filler layer 13 can also resist water quality fluctuations, ensure stable water quality, provide adsorption for the degradation of wastewater, and increase the degradation efficiency of wastewater. The low-temperature plasma reactor 1 degrades pesticide pollutants in the water by generating a large number of active particles such as ions, high-energy electrons, excited atoms or molecules, and activates the adsorbed pollutants in the filler layer 13 .

Illustratively, the inner ground electrode 7 is any one of a spiral shape, a mesh shape, or a linear shape. The utility model selects a spiral shape as the inner ground electrode 7 . The arrangement of the spiral inner ground electrode 7 can increase the number of internal ground electrodes 7 The exposed area of the dielectric cylinder in the air further increases the power factor and discharge power in the low-temperature plasma reactor 1, and increases the production of free radicals such as ozone. The material of the inner ground electrode 7 is any one of copper wire, stainless steel wire, and nickel-chromium alloy wire. The inner ground electrode dielectric cylinder 6 is made of insulating materials such as glass, quartz or ceramics. The inner ground electrode 7 is placed in the inner ground electrode dielectric cylinder 6. Both the inner ground electrode 7 and the inner ground electrode dielectric cylinder 6 are detachable.

For example, the external ground electrode 12 is in the shape of a spiral, a mesh, or an aluminum foil sheet, and the material of the external ground electrode 12 is any type of copper wire, stainless steel wire, or nickel-chromium alloy wire. The external ground electrode 12 is tightly wrapped around the outer medium 21 in a tight circle. The external medium 21 is any one of glass, quartz or ceramic, that is, the external medium 21 is made of insulating material, and the external medium 21 has a detachable structure. The inner ground electrode 7 and the outer ground electrode 12 exist at the same time, thereby increasing the discharge area in the low-temperature plasma reactor 1, thereby increasing the discharge capacity and increasing the volume of the reaction.

Illustratively, the high-voltage electrode 9 is any one of a spiral shape, a mesh shape, or a linear shape. In the present invention, a linear shape is selected as the high-voltage electrode 9. The arrangement of the linear high-voltage electrode 9 increases the distance between the linear high-voltage electrode 9 and the inner ground electrode dielectric cylinder 6. and the uniformity of the discharge gap between the external medium 21 and the external medium 21 .

For example, the material of the high-voltage electrode 9 is any one of copper wire, stainless steel wire, and nichrome wire.

Illustratively, this embodiment does not specifically limit the number of high-voltage electrodes 9. This embodiment consists of four high-voltage electrodes 9 connected in parallel. The four high-voltage electrodes 9 are arranged in concentric circles and are connected in parallel to the power supply 18. The high-voltage electrodes 9 The increase in the number of 9 increases the output power and discharge capacity of the low-temperature plasma reactor 1, thereby increasing the degradation ability of wastewater.

For example, with the inner ground electrode 7 as the center of the circle, four high-voltage electrodes 9 are arranged in concentric circles and installed in the low-temperature plasma reactor 1. The external medium 21 is also arranged with the inner ground electrode 7 as the center of the circle, and the inner ground electrode 7 and the high voltage The electrodes 9 are all removable. An arrangement of the inner ground electrode 7 - the plurality of high voltage electrodes 9 - the external ground electrode 12 is formed. Similarly, the extension is carried out in the same arrangement to increase the volume of the low-temperature plasma reactor 1, increase the output power of the low-temperature plasma reactor 1 and its ability to degrade wastewater, and increase the treatment capacity of wastewater. During the reaction and degradation process, the low-temperature plasma reactor 1 generates more free radicals, high-energy electrons and ultraviolet light, thereby increasing the effect of degrading pollutants.

In a possible embodiment, the low-temperature plasma reactor 1 shell includes: a base 5 with a first cavity inside; a flange 10 disposed on the top of the base 5 and connected to the upper surface of the base 5 ; The external medium 21 is arranged on the upper part of the flange 10 and is connected to the flange 10. A second cavity is provided inside the external medium 21; the first ferrule seat 23 is arranged in the middle of the flange 10 and is connected with the flange 10. The flange 10 is connected and communicates with the first cavity and the second cavity; the second ferrule seat 24 is arranged between the first ferrule seat 23 and the external medium 21 and is connected with the flange 10 and communicates with the second ferrule holder 24 . A cavity and a second cavity, the number of the second ferrule holders 24 is the same as the number of high-voltage electrode dielectric cylinders 11; the low-temperature plasma reactor outlet 8 is located on the flange 10 and is close to the second ferrule holder twenty four.

For example, the inner ground electrode 7 is plugged into the inner ground electrode dielectric cylinder 6. The top of the inner ground electrode dielectric cylinder 6 has an elbow and penetrates the outer medium 21. The high-voltage electrode 9 is plugged into the high-voltage electrode dielectric cylinder 11. The external medium 21 and the flange 10 are integrally formed, and the external medium 21 is fixed on the base 5 through the flange 10. This arrangement facilitates the disassembly of the low-temperature plasma reactor 1.

Exemplarily, the flange 10 is also provided with fixing holes 25 to facilitate the fixed connection between the flange 10 and the upper surface of the base 5 so that bolts can pass through the fixing holes 25. Correspondingly, the upper surface of the base 5 is also provided with bolt holes. The positions and sizes of the holes and the fixing holes 25 correspond to each other, so that the flange 10 is fixedly connected to the upper surface of the base 5 .

In a possible embodiment, it also includes: a filler layer 13 disposed inside the outer medium 21 and connected to the outer medium 21 .

For example, installing the filler layer 13 inside the outer medium 21 can increase the residence time of the wastewater in the low-temperature plasma reactor 1 and increase the energy utilization rate and the degradation time of the wastewater.

For example, the wastewater passes through the nozzle 14 to form small mist droplets, and the small mist droplets enter the low-temperature plasma reactor 1. The low-temperature plasma reactor 1 produces a large number of active particles such as ions, high-energy electrons, excited atoms or molecules, Then the pesticide pollutants in the water are degraded and enter the filler layer 13 at the same time. The filler layer 13 and low-temperature plasma collaboratively degrade the wastewater. The addition of the filler layer 13 can also resist water quality fluctuations, ensure stable water quality, and provide adsorption for the degradation of wastewater. Low-temperature plasma can activate pollutants adsorbed in the filler layer 13 and increase the degradation efficiency of wastewater.

For example, the filler layer 13 of the low-temperature plasma reactor 1 is provided with five holes, allowing the high-voltage electrode dielectric cylinder 11 and the inner ground electrode dielectric cylinder 6 to pass through. This configuration facilitates the disassembly of the filler layer 13 .

In a possible embodiment, the inner ground electrode dielectric cylinder 6 includes: a first ferrule 19 , which is disposed on the outer surface of the inner ground electrode dielectric cylinder 6 and is adapted to the first ferrule holder 23 .

Illustratively, the first ferrule 19 is disposed at one end of the inner ground electrode dielectric cylinder 6 close to the first cavity, so that the inner ground electrode dielectric cylinder 6 is installed on the inner ground electrode dielectric cylinder 6 through the first ferrule 19 and the first ferrule seat 23 . In the case of the flange 10, more of the inner ground electrode dielectric cylinder 6 is located in the second cavity, which in turn causes more of the inner ground electrode 7 to be located in the second cavity, which is conducive to increasing the number of low-temperature plasma reactors. The plasma generation space within the reactor 1 is beneficial to enhancing the degradation ability of the low-temperature plasma reactor 1 for wastewater.

In a possible embodiment, the high-voltage electrode 9 dielectric cylinder includes: a second ferrule 20 , which is disposed on the outer surface of the high-voltage electrode dielectric cylinder 11 and is adapted to the second ferrule seat 24 .

Illustratively, the second ferrule 20 is disposed at one end of the inner ground electrode dielectric cylinder 6 close to the first cavity, so that the inner ground electrode dielectric cylinder 6 is installed on the inner ground electrode dielectric cylinder 6 through the second ferrule 20 and the second ferrule seat 24 . In the case of the flange 10, more of the inner ground electrode dielectric cylinder 6 is located in the second cavity, which in turn causes more of the inner ground electrode 7 to be located in the second cavity, which is conducive to increasing the number of low-temperature plasma reactors. The plasma generation space within the reactor 1 is beneficial to enhancing the degradation ability of the low-temperature plasma reactor 1 for wastewater.

In a possible embodiment, the spray device 2 includes: a device body, disposed on the side close to the external medium 21; a nozzle 14, disposed between the external medium 21 and the device body, and connected to the upper end of the external medium 21 ; The water inlet of the spray device 2 is located on the side of the device body close to the circulation device 3, and is connected to the circulation device 3 through a connecting pipe.

For example, the nozzle 14 is disposed toward the center of the end of the outer medium 21 toward the outer medium 21. This is beneficial to the small mist droplets evenly entering the interior of the outer medium 21 after the wastewater is sprayed from the nozzle 14. This is beneficial to increasing the The contact area of wastewater in the low-temperature plasma reactor 1 facilitates the degradation of wastewater in the low-temperature plasma reactor 1 .

In a possible embodiment, the circulation device 3 includes: a circulation device body; a circulation device water inlet 16, which is provided on the side of the circulation device body and is connected to the low-temperature plasma reactor water outlet 8 through a connecting pipe; The device water outlet 17 is arranged adjacent to the circulation device water inlet 16 and is connected to the spray device water inlet 15 through a connecting pipeline.

Illustratively, the circulation device 3 is opened, the water outlet 17 of the circulation device is connected to the water inlet 15 of the spray device through the connecting pipe, so that the water from the water outlet 17 of the circulation device enters the spray device 2, and the water in the spray device 2 passes through the nozzle 14 , enters the low-temperature plasma reactor 1 in the form of small mist droplets. After the water is degraded in the low-temperature plasma reactor 1, it then exits through the low-temperature plasma reactor on the internal flange 10 of the low-temperature plasma reactor 1. The water inlet 8 enters the second cavity of the base 5, and finally returns to the circulation device 3 from the low-temperature plasma reactor outlet 8 through the connecting pipe. In this way, the wastewater is completed in the double grounding pole. The high-pressure and ultra-low temperature plasma pesticide wastewater is Circulation within the processing unit.

For example, the degradation process of wastewater by the low-temperature plasma reactor 1 is cyclically caused by the circulation of the circulation device 3, thereby achieving the degradation effect of pesticide pollutants in the wastewater.

In a possible embodiment, the high-voltage electrode 9 is connected to the power supply 18 in parallel.

For example, multiple high-voltage electrodes 9 connected in parallel increase the discharge effect of the low-temperature plasma reactor 1 , such as the electric field intensity and current intensity, thereby increasing the production of free radicals such as O ₃ in the low-temperature plasma reactor 1 .

In a possible embodiment, the inner ground electrode 7 and the outer ground electrode 12 are connected to the ground electrode 4 in parallel.

For example, the external ground electrode 12 and the internal ground electrode 7 are connected to the ground electrode 4 in parallel. The structure of the double ground electrode is conducive to increasing the volume of the low-temperature plasma reactor 1, increasing the output power, and thus increasing the Degradation ability of wastewater.

The above are only specific implementations of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person familiar with the technical field can easily think of changes or modifications within the technical scope disclosed by the present utility model. Replacements shall be covered by the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims (9)

1. A double-grounding-electrode high-voltage extremely-low-temperature plasma pesticide wastewater treatment device comprises a low-temperature plasma reactor, a spraying device and a circulating device and is characterized in that the device comprises a plurality of high-voltage extremely-low-temperature plasma pesticide wastewater treatment devices, wherein the low-temperature plasma pesticide wastewater treatment devices are connected with the spraying device;

a reactor housing;

an internal electrode medium cylinder arranged in the reactor shell and connected with the reactor shell;

the inner grounding electrode is inserted into the medium cylinder of the inner grounding electrode and is connected with the grounding electrode;

a plurality of high-voltage electrode medium cylinders disposed between the inner electrode medium cylinder and the reactor housing and connected to the reactor housing;

each high-voltage electrode is inserted into the high-voltage electrode medium barrel and connected with the high-voltage electrode medium barrel;

the external grounding electrode is arranged on the outer side of the reactor shell and is connected with the reactor shell;

the spraying device is arranged on one side close to the reactor shell and is connected with the upper end of the reactor shell;

the circulating device is arranged between the reactor shell and the spraying device and is respectively connected with the reactor shell and the spraying device through connecting pipelines.

2. The dual-grounded extremely high-voltage extremely low-temperature plasma pesticide wastewater treatment apparatus according to claim 1, wherein the reactor housing comprises:

a first cavity is formed in the base;

the flange is arranged at the top of the base and is connected with the upper surface of the base;

the outer medium is arranged at the upper part of the flange and is connected with the flange, and a second cavity is formed in the outer medium;

the first clamping sleeve seat is arranged in the middle of the flange, is connected with the flange and is communicated with the first cavity and the second cavity;

the second clamping sleeve seats are arranged between the first clamping sleeve seats and the external medium, are connected with the flange, are communicated with the first cavity and the second cavity, and are the same as the high-voltage electrode medium cylinders in number;

and the water outlet of the low-temperature plasma reactor is arranged on the flange and is close to the second clamping sleeve seat.

3. The dual-grounded extremely high-voltage extremely low-temperature plasma pesticide wastewater treatment apparatus according to claim 2, further comprising:

the packing layer is arranged in the outer medium and is connected with the outer medium.

4. The dual-grounding-electrode multi-high-voltage extremely low-temperature plasma pesticide wastewater treatment device according to claim 2, wherein the internal grounding electrode medium cartridge comprises:

the first cutting sleeve is arranged on the outer surface of the internal electrode medium cylinder and is matched with the first cutting sleeve seat.

5. The dual-grounded extremely low-voltage plasma pesticide wastewater treatment device according to claim 2, wherein the high-voltage electrode dielectric cartridge comprises:

the second cutting sleeve is arranged on the outer surface of the high-voltage electrode medium cylinder and is matched with the second cutting sleeve seat.

6. The dual-grounded extremely high-voltage extremely low-temperature plasma pesticide wastewater treatment apparatus according to claim 2, wherein the spraying apparatus comprises:

a device body disposed on a side close to the external medium;

the spray head is arranged between the external medium and the device main body and is connected with the upper end of the external medium;

the spraying device water inlet is arranged on the side surface of the device main body, which is close to the circulating device, and is connected with the circulating device through a connecting pipeline.

7. The dual-grounded extremely high-voltage extremely low-temperature plasma pesticide wastewater treatment device according to claim 6, wherein the circulating device comprises:

a circulation device body;

the circulating device water inlet is arranged on the side surface of the circulating device main body and is connected with the low-temperature plasma reactor water outlet through a connecting pipeline;

and the water outlet of the circulating device is arranged adjacent to the water inlet of the circulating device and is connected with the water inlet of the spraying device through a connecting pipeline.

8. The dual grounding most high voltage and extremely low temperature plasma pesticide wastewater treatment device according to claim 1, wherein the high voltage electrodes are connected to a power source in parallel.

9. The dual-grounding-electrode multi-high-voltage and ultra-low-temperature plasma pesticide wastewater treatment device according to claim 1, wherein the internal grounding electrode and the external grounding electrode are connected to the grounding electrode in parallel.