Plasma-activated water mist disinfection device and method

Abstract

The present invention provides a plasma-activated water mist disinfection device and method. The device includes a water tank, an electrode array, a dielectric sleeve, a water pump, an atomizing nozzle, and a controller. The electrode array is located in the water tank and floats on the surface of the aqueous solution. The electrode array includes multiple electrode terminals, which are electrically connected to a high-voltage power supply. One end of the dielectric sleeve is connected to the electrode array, and the other end is immersed in the aqueous solution. The electrode terminals are correspondingly located in the dielectric sleeve. The water pump is located in the aqueous solution, and the atomizing nozzle is located outside the water tank and connected to the water pump. The controller is electrically connected to the water pump and the high-voltage power supply. After the electrode terminals are connected to the high-voltage power supply, they discharge electricity to the surface of the aqueous solution, generating plasma in the dielectric sleeve. The plasma activates the aqueous solution, and the plasma-activated water is transported to the atomizing nozzle via the water pump for atomization and spraying. The present invention can realize the immediate use of plasma-activated water, ensuring that the sterilization and disinfection effect of the activated water does not decline. The activated water is non-toxic and harmless, and has a wide range of uses.

Description

Technical Field

[0001] The present invention relates to the fields of medical treatment and public health, and in particular to a plasma activated water mist disinfection device and method. Background Art

[0002] Common methods for disinfecting the air include air discharge, ultraviolet disinfection, or disinfectant spray disinfection. Air discharge sterilization is very efficient, but it will produce byproducts such as ozone and nitrogen oxides, which are very harmful to the respiratory system. Ultraviolet or photocatalytic sterilization is inefficient and takes a long time, and ultraviolet radiation can also cause great harm to human eyes and skin. Disinfectant spray sterilization is highly efficient, but it is also highly toxic, and the disinfectant remains for a long time, making it unsuitable for use in human environments. It is absolutely not suitable for use in indoor scenes with people or food. The development of efficient and secondary pollution-free air disinfection methods and devices is a difficult problem that urgently needs to be solved in the fields of public health and medicine.

[0003] Recent studies have found that plasma-activated water has a highly effective sterilization and disinfection effect. Plasma-activated water, when combined with plasma, can directly act on bacteria and viruses, achieving a similar sterilization and disinfection effect as disinfectants. While air-discharge plasma gas-phase sterilization and disinfection produces byproducts such as ozone, no ozone byproducts are released when water is treated with plasma activation and then used for sterilization and disinfection. These latest research findings were published in the prestigious academic journal Chemical Engineering Journal (November 2020) in the paper "Plasma-activated water: An alternative disinfectant for S protein inactivation to prevent SARS-CoV-2 infection." The paper experimentally verified the highly effective inactivation of plasma-activated water against the novel coronavirus (SARS-CoV-2). The study confirmed that plasma-activated water is rich in reactive singlet oxygen, which reacts with bacteria and viruses, disrupting their cell membranes or DNA structures, thereby inactivating them. Singlet oxygen, on the other hand, reacts with bacteria and viruses, becoming inactivated and reduced to ground-state oxygen molecules, which are non-toxic and harmless. Therefore, plasma-activated water is safe. This has led to the increasing research and application of plasma-activated water. However, existing technologies typically first use plasma activation technology to treat water, and then immerse the items to be disinfected in the water for sterilization. This approach has its drawbacks: first, liquid-phase disinfection requires a large amount of plasma water and cannot disinfect air; second, the disinfectant activity of activated water decreases rapidly and monotonically over time, making it difficult to ensure the stability and reliability of activated water disinfection. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the object of the present invention is to provide a plasma-activated water mist disinfection device and method, which is used to solve the problems in the prior art of first using plasma activation technology to treat water and then immersing the instruments to be disinfected in water for sterilization and disinfection, such as the large demand for plasma water and the inability to disinfect the air. At the same time, since the disinfection activity of the activated water decreases monotonically and rapidly over time, it is difficult to ensure the stability and reliability of the activated water disinfection.

[0005] To achieve the above-mentioned and other related objectives, the present invention provides a plasma-activated water mist disinfection device, comprising a water tank for accommodating an aqueous solution, an electrode array, a dielectric sleeve, a water pump, an atomizing nozzle, and a controller; the water tank is provided with a water inlet; the electrode array is located in the water tank and floats on the liquid surface of the aqueous solution, and comprises a plurality of electrode terminals, which are electrically connected to a high-voltage power supply; one end of the dielectric sleeve is connected to the electrode array, and the other end is immersed in the aqueous solution, and the electrode terminals are correspondingly located in the dielectric sleeve; the water pump is located in the aqueous solution, the atomizing nozzle is located outside the water tank and is in communication with the water pump; the controller is electrically connected to the water pump and the high-voltage power supply;

[0006] After the electrode terminal is connected to a high-voltage power supply, discharge is applied to the surface of the aqueous solution, generating plasma in the dielectric sleeve. The plasma activates the aqueous solution, and the plasma-activated water is transported to the atomizing nozzle via the water pump for atomization spraying.

[0007] Optionally, the plasma-activated water mist disinfection device further includes a fan, which is located outside the water tank and is arranged adjacent to the atomizing nozzle. The fan is electrically connected to the controller and is used to disperse the plasma-activated water mist sprayed from the atomizing nozzle.

[0008] Optionally, the plasma-activated water mist disinfection device further includes a battery, and the high-voltage power supply is electrically connected to the battery.

[0009] Optionally, the aqueous solution comprises saline.

[0010] Optionally, the electrode array floats on the surface of the aqueous solution via a plurality of floats.

[0011] Optionally, the plasma-activated water mist disinfection device further includes a liquid level monitor, which is located in the water tank. The controller is electrically connected to the liquid level monitor to shut down the high-voltage power supply and water pump when it is detected that the liquid level of the aqueous solution is lower than a predetermined liquid level.

[0012] Optionally, the dielectric sleeve includes one or both of a ceramic sleeve and a quartz sleeve.

[0013] Optionally, the plasma-activated water mist disinfection device further includes an electrical box and an electric wheel, the high-voltage power supply and the controller are located in the electrical box, the water tank is located on the electrical box, the electric wheel is located at the bottom of the electrical box, and the electric wheel is electrically connected to the controller.

[0014] The present invention also provides a plasma-activated water mist disinfection method, which is based on the plasma-activated water mist disinfection device described in any of the above schemes. The plasma-activated water mist disinfection method includes the steps of injecting an appropriate amount of aqueous solution into a water tank, turning on a high-voltage power supply through a controller, and causing the electrode terminals of an electrode array to discharge to the liquid surface of the aqueous solution, generating plasma in a dielectric sleeve, and activating the aqueous solution with the plasma. After a preset time, the plasma-activated water is transported to an atomizing nozzle by a water pump for atomization spraying.

[0015] Optionally, the plasma-activated water mist disinfection device travels along a preset route to perform mobile sterilization and disinfection.

[0016] As described above, the plasma-activated water mist disinfection device and method of the present invention have the following beneficial effects: The plasma-activated water mist disinfection device provided by the present invention, through its optimized structural design, can simultaneously perform plasma activation on aqueous solutions while simultaneously sterilizing and disinfecting them, ensuring immediate use and maintaining the sterilization and disinfection efficacy of the activated water throughout the entire sterilization and disinfection process. The unique electrode array design ensures discharge stability and eliminates the generation of harmful byproducts such as ozone and nitrogen oxides. The invention can be used not only for sterilizing instruments but also for air disinfection, being harmless to humans and the environment and possessing a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic structural diagram of a plasma-activated water mist disinfection device provided by the present invention in one example.

[0018] Component number description

[0019] 11 Water Tank

[0020] 111 Water injection port

[0021] 12-electrode array

[0022] 121 electrode terminal

[0023] 13 Dielectric sleeve

[0024] 14 Water Pump

[0025] 15 Atomizing Nozzle

[0026] 16 Controller

[0027] 17 High-voltage power supply

[0028] 18 Fan

[0029] 19 Batteries

[0030] 20 Float

[0031] 21 Liquid level monitor

[0032] 22 electrical box

[0033] 23 Electric Wheel DETAILED DESCRIPTION

[0034] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0035] See also Figure 1 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without changes in the substantive technical content.

[0036] The sterilization and disinfection capabilities of plasma-activated water have been widely demonstrated. However, existing technologies typically utilize liquid-phase disinfection methods, whereby water is first treated with plasma activation and then the sterilized instruments are immersed in the plasma-activated water. This method, on the one hand, requires a large amount of plasma water and cannot disinfect air. On the other hand, the disinfection activity of activated water decreases rapidly and monotonically over time, making it difficult to ensure the stability and reliability of activated water disinfection. The present invention proposes an improved solution to this problem.

[0037] Specifically, if Figure 1As shown, the present invention provides a plasma-activated water mist disinfection device, comprising a water tank 11 for accommodating an aqueous solution, an electrode array 12, a medium sleeve 13, a water pump 14, an atomizing nozzle 15 and a controller 16; a water inlet 111 is provided on the water tank 11, so as to inject an appropriate amount of aqueous solution into the water tank 11 through the water inlet 111, and a drain outlet (not shown) may also be provided at the bottom of the water tank 11; the electrode array 12 is located in the water tank 11 and floats on the liquid surface of the aqueous solution, the electrode array 12 includes a plurality of electrode terminals 121, and the electrode terminals 121 are electrically connected to a high-voltage power supply 17, the high-voltage power supply 17 may be a part of the device itself, or may be an external power supply. In a preferred example, the plasma-activated water mist disinfection device has its own high-voltage power supply 17 to improve Flexibility of movement; one end of the dielectric sleeve 13 is connected to the electrode array 12, and the other end is immersed in the aqueous solution. The end of the dielectric sleeve 13 immersed in the aqueous solution is open, and the electrode terminal 121 is correspondingly located in the dielectric sleeve 13; the water pump 14 is located in the aqueous solution, and the atomizing nozzle 15 is located outside the water tank 11, for example, at the top of the water tank 11, and is connected to the water pump 14; the controller 16 is electrically connected to the water pump 14 and the high-voltage power supply 17; after the electrode terminal 121 is connected to the high-voltage power supply 17, it discharges to the liquid surface of the aqueous solution, generates plasma in the dielectric sleeve 13, and the plasma activates the aqueous solution. The plasma-activated water is transported to the atomizing nozzle 15 through the water pump 14 for atomization spraying to spray out plasma-activated water mist.

[0038] In the present invention, since the electrode array 12 floats on the liquid surface, it rises and falls or tilts synchronously with the rise and fall or tilt of the liquid surface, ensuring that the distance between the electrode terminal 121 and the liquid surface remains constant and that the electrode array 12 is parallel to the liquid surface, thereby ensuring discharge uniformity and safety of the electrode array 12. In the prior art, however, the other set of electrodes in the electrode discharge device is fixed. When the water level drops, the distance between the electrodes increases, causing the discharge power to decrease or even stop. When the horizontal plane tilts, the electrode array 12 becomes non-parallel to the horizontal plane, with some electrode ends close to the water surface and others far away. The distant electrode ends no longer discharge, and only the closest electrode ends discharge. The discharge array is extremely uneven, and arcing may even occur between electrodes at close range, resulting in poor safety. Furthermore, in the prior art plasma activated water devices, regardless of whether water electrode discharge is used, the discharge zone is open and connected to the surrounding air, resulting in a large amount of air participating in the discharge reaction and generating excessive ozone and nitrogen oxides, which can be harmful to humans or the environment. In contrast, the present invention places the electrode terminal 121 within the dielectric sleeve 13. One end of the dielectric sleeve 13 is connected to the electrode array 12, while the other end is submerged below the liquid surface. This isolates the electrode terminal 121 from the outside air, forming a closed discharge zone that inhibits the synthesis of ozone and nitrogen oxides. The mechanism of action is that when plasma decomposes water molecules, producing H₂ and O₂, the undissolved portion in the water causes the pressure within the dielectric sleeve 13 to rise, resulting in a positive pressure within the dielectric sleeve 13. Under this positive pressure, the active gas components within the dielectric sleeve 13 form bubbles that enter the water and partially dissolve, with the undissolved portion bubbling to the surface. Compared to existing water activation devices with open electrodes, the present invention can significantly increase the concentration of active components in the plasma and water, which helps to increase the reactive activity of the activated water and improve disinfection and sterilization efficiency. The main sterilizing factor in plasma-activated water is singlet oxygen. Singlet oxygen has strong reactivity and easily reacts with viruses or bacteria, destroying cell membranes and DNA structures or causing bacterial metabolic disorders to inactivate both, thereby achieving the purpose of disinfection and sterilization. After inactivation, singlet oxygen returns to a stable oxygen molecule, and no toxic or harmful substances remain for a long time. The activated water after inactivation is just ordinary saline. Therefore, plasma-activated water is a safe disinfectant that can be widely used in disinfection scenarios involving people and food, and is particularly suitable for disinfection of public health places. The plasma-activated water device provided by the present invention can perform plasma activation treatment on an aqueous solution while sterilizing and disinfecting it, and can be used immediately after use. It can ensure that the sterilization and disinfection effect of the activated water does not decline throughout the sterilization and disinfection process. The unique electrode array design ensures the stability of the discharge and does not produce harmful byproducts such as ozone and nitrogen oxides. The invention can be used not only for disinfection and sterilization of instruments, but also for disinfection and sterilization of air. It is harmless to the human body and the environment and has a wide range of application value.

[0039] To ensure a better spraying effect, as an example, the water pump 14 is a high-pressure water pump 14 .

[0040] As an example, the controller 16 includes, but is not limited to, a PLC controller 16 .

[0041] In one example, the plasma-activated water mist disinfection device also includes a fan 18, which is located outside the water tank 11 and is arranged adjacent to the atomizing nozzle 15. The fan 18 is electrically connected to the controller 16 and is used to disperse the plasma-activated water mist sprayed from the atomizing nozzle 15, thereby further expanding the spraying range of the plasma-activated water mist and further refining the water mist.

[0042] As an example, the plasma-activated water mist disinfection device further includes a battery 19, such as a lithium-ion battery 19, and the high-voltage power supply 17 is electrically connected to the battery 19 to improve the mobility of the device.

[0043] In one example, the aqueous solution includes salt water. The salt water serves as both the activation treatment target and the plasma discharge electrode. Salt water not only enhances electrical conductivity but also enhances the disinfection and sterilization activity of singlet oxygen. Of course, depending on the application scenario, hydrogen peroxide or other disinfectants may also be added to the aqueous solution, and this is not strictly limited in this embodiment.

[0044] As an example, the electrode array 12 floats on the surface of the aqueous solution through a plurality of floats 20 , for example, the electrode array 12 floats on the liquid surface with the support of four floats 20 spaced apart and distributed on the liquid surface.

[0045] In one example, the plasma-activated water mist disinfection device further includes a liquid level monitor 21, which is located in the water tank 11. For example, two liquid level monitors 21 are respectively provided at symmetrical positions at two diagonal angles on the inner wall of the water tank 11. The controller 16 is electrically connected to the liquid level monitor 21 to shut down the high-voltage power supply 17 and the water pump 14 when it detects that the liquid level of the aqueous solution is lower than a predetermined level. Of course, if the fan 18 is provided, the fan 18 will also be shut down at this time. In other examples, if the liquid level monitor 21 is not provided, the high-voltage power supply 17, the water pump 14, and the fan 18 may also be shut down after a preset time.

[0046] As an example, the dielectric sleeve 13 includes one or both of a ceramic sleeve and a quartz sleeve. Of course, it can also be a sleeve made of other insulating materials, which will not be elaborated one by one.

[0047] As an example, the plasma-activated water mist disinfection device also includes an electrical box 22 and electric wheels 23. The high-voltage power supply 17 and the controller 16 are located in the electrical box 22 (the battery 19 is also loaded in the electrical box 22). The water tank 11 is located on the electrical box 22. The electric wheels 23 are located at the bottom of the electrical box 22, and the electric wheels 23 are electrically connected to the controller 16. A closed electrical box 22 is provided to accommodate the high-voltage power supply 17 and the controller 16, so that these components can be prevented from being exposed to the water mist environment. There can be 4 electric wheels 23, which are respectively arranged at the bottom of the four corners of the electrical box 22. The controller 16 can pre-store a travel route, thereby driving the plasma-activated water device to move along the optimized route to achieve mobile sterilization and disinfection.

[0048] Example

[0049] This example is to test the inactivation rate of natural bacteria and golden glucose bacteria in the air by applying the plasma activated water mist disinfection device provided by the present invention. In this example, the plasma discharge power of the device is 280W, the atomization speed is 5L / h, the fan power is 25W, the circulating air volume is 450m3 / h, and the battery pack is a 36V60AH ternary lithium ion battery. The device is placed at 15m 2 ⅹ2m=30m 3 In the test cabin. Five golden glucose strains were placed at the four corners and the center of the experimental cabin, and the device was started to enter the automatic program mode: 5 minutes after the plasma discharge, the water pump and fan spray were automatically started, and the electric wheel drive device repeatedly made a "return" motion in the test cabin at a speed of 8 meters per minute. After the preset 30-minute disinfection time was reached, the device automatically shut down. Immediately after shutdown, five samples of natural bacteria in the air were collected at the four corners and the center of the experimental cabin, and placed in a cell culture incubator together with the five golden glucose strain-treated samples placed at the corresponding positions for 48 hours. After that, they were taken out for counting and calculation, and the sterilization rate of natural bacteria was 93.3%, and the sterilization rate of golden glucose strain was 99.9%. This shows that the plasma-activated water mist device provided by the present invention can achieve a good bactericidal and disinfecting effect.

[0050] The plasma-activated water device of the present invention enables immediate use of plasma-activated water. During the disinfection process, the plasma treatment continues, maintaining the activated water at a high activity level. Furthermore, the device utilizes a vapor-phase disinfection and sterilization method, which is more widely applicable and efficient than immersion-based disinfection methods, making it suitable for disinfecting large spaces and objects.

[0051] The present invention also provides a plasma-activated water mist disinfection method, which is based on the plasma-activated water mist disinfection device described in any of the above-mentioned embodiments. For a description of the device, please refer to the preceding content and, for the sake of brevity, will not be repeated. The plasma-activated water mist disinfection method comprises injecting an appropriate amount of aqueous solution into a water tank, such as adding an appropriate amount of saline through the water inlet. A high-voltage power supply is activated by a controller, causing the electrode terminals of the electrode array to discharge toward the surface of the aqueous solution, generating plasma within a dielectric sleeve. The plasma activates the aqueous solution. After a preset time, such as 300 seconds, the controller activates a water pump to deliver the plasma-activated water to an atomizing nozzle for atomization and spraying, thereby dispensing plasma-activated water mist for sterilization and disinfection. If a fan is provided, the fan is also activated to disperse the water mist over a wider area. If a motorized wheel is provided, the controller controls the motorized wheel to drive the device along an optimized route for mobile sterilization and disinfection. After a preset time or when the aqueous solution drops to a preset level, the device shuts down, and the high-voltage power supply, water pump, and fan-light device all cease operation.

[0052] In summary, the present invention provides a plasma-activated water mist disinfection device and method. The device includes a water tank for containing an aqueous solution, an electrode array, a dielectric sleeve, a water pump, an atomizing nozzle, and a controller; the water tank is provided with a water inlet; the electrode array is located in the water tank and floats on the surface of the aqueous solution, including a plurality of electrode terminals, which are electrically connected to a high-voltage power supply; one end of the dielectric sleeve is connected to the electrode array, and the other end is immersed in the aqueous solution, and the electrode terminals are correspondingly located in the dielectric sleeve; the water pump is located in the aqueous solution, and the atomizing nozzle is located outside the water tank and connected to the water pump; the controller is electrically connected to the water pump and the high-voltage power supply; after the electrode terminals are connected to the high-voltage power supply, they discharge to the surface of the aqueous solution, generating plasma in the dielectric sleeve, which activates the aqueous solution, and the plasma-activated water is transported to the atomizing nozzle via the water pump for atomization spraying. The plasma-activated water device provided by the present invention can simultaneously perform plasma activation on aqueous solutions while simultaneously sterilizing and disinfecting them, ensuring immediate use. This device ensures that the sterilization and disinfection efficacy of the activated water remains undiminished throughout the sterilization process. Its unique electrode array design ensures discharge stability and eliminates the generation of harmful byproducts such as ozone and nitrogen oxides. The invention can be used not only for sterilizing instruments but also for air sterilization, is harmless to the human body and the environment, and has broad application value. Therefore, the present invention effectively overcomes various shortcomings of the prior art and possesses high industrial value.

[0053] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A plasma activated water mist disinfection device, characterized in that: The apparatus comprises a water tank for containing an aqueous solution, an electrode array, a dielectric sleeve, a water pump, an atomizing nozzle, and a controller; the water tank is provided with a water inlet; the electrode array is located in the water tank and floats on the surface of the aqueous solution, and comprises a plurality of electrode terminals electrically connected to a high-voltage power supply; the electrode array floats on the surface of the aqueous solution via a plurality of floats, so that the distance between the electrode terminals and the liquid surface remains constant; One end of the dielectric sleeve is connected to the electrode array, and the other end is immersed in the aqueous solution. The electrode terminals are correspondingly located in the dielectric sleeve, isolating the electrode terminals from the external air to form a closed discharge area; the water pump is located in the aqueous solution, and the atomizing nozzle is located outside the water tank and is connected to the water pump; the controller is electrically connected to the water pump and the high-voltage power supply; After the electrode terminal is connected to a high-voltage power supply, discharge is applied to the surface of the aqueous solution, generating plasma in the dielectric sleeve. The plasma activates the aqueous solution, and the plasma-activated water is transported to the atomizing nozzle via the water pump for atomization spraying.

2. The plasma activated water mist disinfection device according to claim 1, characterized in that: The plasma-activated water mist disinfection device also includes a fan, which is located outside the water tank and is arranged adjacent to the atomizing nozzle. The fan is electrically connected to the controller and is used to disperse the plasma-activated water mist sprayed from the atomizing nozzle.

3. The plasma activated water mist disinfection device according to claim 1, characterized in that: The plasma-activated water mist disinfection device also includes a battery, and the high-voltage power supply is electrically connected to the battery.

4. The plasma activated water mist disinfection device according to claim 1, characterized in that: The aqueous solution includes saline.

5. The plasma activated water mist disinfection device according to claim 1, characterized in that: The plasma-activated water mist disinfection device also includes a liquid level monitor, which is located in the water tank. The controller is electrically connected to the liquid level monitor to shut down the high-voltage power supply and water pump when it is detected that the liquid level of the aqueous solution is lower than a predetermined liquid level.

6. The plasma activated water mist disinfection device according to claim 1, characterized in that: The dielectric sleeve includes one or both of a ceramic sleeve and a quartz sleeve.

7. The plasma-activated water mist disinfection device according to any one of claims 1 to 6, characterized in that: The plasma-activated water mist disinfection device also includes an electrical box and an electric wheel. The high-voltage power supply and controller are located in the electrical box, the water tank is located on the electrical box, the electric wheel is located at the bottom of the electrical box, and the electric wheel is electrically connected to the controller.

8. A plasma activated water mist disinfection method, characterized in that: The plasma-activated water mist disinfection method is based on the plasma-activated water mist disinfection device according to any one of claims 1 to 7. The plasma-activated water mist disinfection method includes injecting an appropriate amount of aqueous solution into a water tank, turning on a high-voltage power supply through a controller, and causing the electrode terminals of an electrode array to discharge to the liquid surface of the aqueous solution, thereby generating plasma in a dielectric sleeve. The plasma activates the aqueous solution, and after a preset time, the plasma-activated water is transported to an atomizing nozzle by a water pump for atomization spraying.

9. The plasma-activated water mist disinfection method according to claim 8, characterized in that: The plasma activated water mist disinfection device travels along a preset route to perform mobile sterilization and disinfection.

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