Low-temperature plasma sewage treatment device and treatment method

Abstract

The application discloses a low-temperature plasma sewage treatment equipment and a treatment method, and belongs to the technical field of sewage treatment. The low-temperature plasma sewage treatment equipment comprises a treatment tank, a first water outlet is arranged on any side of the treatment tank, and an aeration port is arranged at the bottom of the treatment tank. Through cooperation of the pretreatment structure and the stirring mechanism, the microorganisms in the medical sewage can be killed by using the pretreatment structure, the existence of a large number of microorganisms is prevented from competing with active species generated in the plasma, the treatment effect of the medical sewage is improved when the medical sewage is subjected to dielectric barrier discharge plasma treatment, the stirring assembly uniformly stirs the medical sewage by using the stirring mechanism, the contact between the organic matter in the sewage and the active species generated in the plasma reactor is promoted, the treatment effect is improved, and the reliability of the treatment effect is improved, and the situation that the local concentration of the plasma is too high or too low can be avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sewage treatment, and particularly relates to a low-temperature plasma sewage treatment device and a treatment method. BACKGROUND

[0002] Dielectric barrier discharge plasma technology is a new type of non-thermal plasma technology, which generates plasma by using the gas discharge space formed by the dielectric isolation layer between two electrodes without contacting the electrodes, so as to realize degradation of organic pollutants. Since the plasma generated by the dielectric barrier discharge plasma technology contains rich free radicals, strong oxidizing species and other high-activity substances, the organic pollutants can be efficiently degraded. Therefore, the dielectric barrier discharge plasma technology is widely researched in the field of sewage treatment. When the dielectric barrier discharge plasma technology is used to treat medical sewage, a large number of microorganisms exist in the medical sewage. The existence of a large number of microorganisms competes with active species generated in the plasma, reduces the contact and oxidation degradation rate of the active species with the organic pollutants, and causes the treatment effect to decrease. Meanwhile, the existence of the microorganisms may consume the chemical active substances and electrons generated by the plasma, so that the energy originally used for degradation of the organic wastewater is consumed by the microorganisms, which causes the treatment efficiency to decrease and the degradation effect to decrease. SUMMARY

[0003] The application aims to overcome the defects of the prior art and provide a low-temperature plasma sewage treatment device and a treatment method.

[0004] The technical scheme adopted to solve the above technical problem is as follows: a low-temperature plasma sewage treatment device, comprising a treatment tank, a first water outlet is arranged on any side of the treatment tank, an aeration port is arranged at the bottom of the treatment tank, second supporting legs are fixedly connected to four corners of the bottom surface of the treatment tank, a tank cover plate is fixedly connected to the top surface of the treatment tank, an exhaust port is arranged on the side of the top surface of the tank cover plate away from the first water outlet, a first water inlet is arranged at the position of the top surface of the tank cover plate close to the exhaust port, a low-temperature plasma generating device is installed on the side of the top surface of the tank cover plate close to the first water outlet, an air inlet is arranged on the top surface of the low-temperature plasma generating device, a plasma output port is arranged on the side of the low-temperature plasma generating device away from the first water inlet, a gas pipeline is installed on the plasma output port, the other end of the gas pipeline is installed on the aeration port, a stirring mechanism is arranged at the position of the top surface of the tank cover plate close to the low-temperature plasma generating device, and a pretreatment structure is arranged on the side of the tank cover plate away from the low-temperature plasma generating device.

[0005] By the above technical scheme, the valve can be installed at the drain opening during use to control the treatment time of medical sewage and the like, and the low-temperature plasma generating device introduces the gas into the discharge chamber through the gas inlet under the action of the high-voltage power supply to realize generation and control of the plasma, and transmits the plasma to the inside of the treatment tank through the plasma output port and the gas pipeline after the plasma is generated.

[0006] Further, the pre-treatment structure includes a bottom plate, a light-transmitting tank body is fixedly connected to the top surface of the bottom plate, a rotating ring is rotatably connected to the outer wall of the bottom plate, an inner gear ring is fixedly connected to the bottom surface of the rotating ring, a plurality of first supporting legs are fixedly connected to the bottom surface of the bottom plate, a first mounting bracket is fixedly connected to the first supporting leg, a first motor is mounted to the top surface of the first mounting bracket, a first gear is fixedly connected to the output shaft of the first motor, and the first gear is meshingly connected with the inner gear ring.

[0007] Through the above technical scheme, the first motor is started to drive the first gear to rotate, so that the rotating ring is driven to rotate by the inner gear ring.

[0008] Further, the top surface of the rotating ring is fixedly connected with mounting blocks in symmetry, the top surface of any one of the mounting blocks is fixedly connected with a cleaning brush, and the top surface of the other mounting block is fixedly connected with an ultraviolet lamp group.

[0009] Through the above technical scheme, the ultraviolet lamp group can kill microorganisms in the medical sewage in the light-transmitting tank body, prevent a large number of microorganisms from competing with active species generated in the plasma, improve the treatment effect of the medical sewage during the dielectric barrier discharge plasma treatment, and move with the rotating ring to irradiate the light-transmitting tank body in all directions, improve the killing of microorganisms in the medical sewage, and the cleaning brush also moves with the rotating ring to clean the outer wall of the light-transmitting tank body, prevent dust and sundries from shielding the ultraviolet light, and improve the irradiation effect of the ultraviolet lamp group.

[0010] Further, a top cover is arranged on the top surface of the light-transmitting tank body, a handle is fixedly connected to the center position of the top surface of the top cover, a second water inlet is arranged at the position close to the handle of the top cover, fixed blocks are fixedly connected to the two sides of the top cover and the light-transmitting tank body, respectively, and a latch is arranged in each of the fixed blocks, a supporting ring is fixedly connected to the position close to the fixed block on the inner wall of the light-transmitting tank body, and a filter screen is arranged on the top surface of the supporting ring.

[0011] Through the technical scheme, the filter screen can filter the floating matter and impurities in the medical sewage, prevent the impurities and floating matter from hindering the contact between the active species generated in the plasma and the organic pollutants, and improve the treatment efficiency and degradation speed of the medical sewage.

[0012] Further, the bottom plate is provided with a second water outlet, a pipeline valve is installed at the bottom end of the second water outlet, a water pump is arranged on the side close to the cleaning brush of the pipeline valve, the liquid inlet of the water pump is installed at the bottom end of the pipeline valve, a liquid pipeline is installed on the liquid outlet of the water pump, and the other end of the liquid pipeline is installed on the first water inlet.

[0013] Through the technical scheme, the water pump can deliver the pretreated sewage into the treatment tank.

[0014] Further, the stirring mechanism comprises a second mounting frame fixedly connected to the top surface of the tank cover plate, a second motor installed on the top surface of the second mounting frame, a connecting column fixedly connected to the output shaft of the second motor, the connecting column penetrating through the tank cover plate, a sleeve ring rotatably connected to the outer wall of the tank cover plate at the bottom end position of the connecting column, the sleeve ring being fixedly connected to the bottom surface of the tank cover plate, and a rotating frame fixedly connected to the bottom end of the second mounting frame.

[0015] Through the technical scheme, starting the second motor can drive the connecting column to rotate, so that the connecting column drives the rotating frame to rotate.

[0016] Further, a second gear is fixedly connected to the outer wall of the sleeve ring, a plurality of third gears are uniformly distributed on the outer side of the second gear, a transmission shaft is fixedly connected to the center position of the third gear, the transmission shaft penetrates through the proximal rotating frame, a third gear is also fixedly connected to the outer wall of the bottom end of the transmission shaft, and the third gear at the upper position is in meshing connection with the second gear.

[0017] Through the technical scheme, when the rotating frame moves, the third gear will rotate together, so that the third gear at the upper position is constantly in meshing connection with the second gear, and drives the third gear at the lower position to rotate together.

[0018] Further, fourth gears are rotatably connected to the bottom surface of the rotating frame at positions close to the third gears, a connecting handle is fixedly connected to the bottom surface of the fourth gear, and a stirring assembly is installed on the bottom surface of the connecting handle away from the fourth gear.

[0019] Through the technical scheme, when the third gear at the lower position rotates, the fourth gear drives the connecting handle to rotate, all the stirring assemblies perform circular motion with the connecting column as the center under the action of the rotating plate, and each stirring assembly also performs circular motion with the fourth gear as the center under the action of the fourth gear and the connecting handle, so that the stirring assemblies can stir the medical sewage, promote the contact between the organic matter in the sewage and the active species generated in the plasma reactor, improve the treatment effect, and also uniformly distribute the organic matter in the sewage and the active species in the plasma reactor, avoid the situation that the local concentration is too high or too low, and improve the reliability of the treatment effect.

[0020] Further, a treatment method of the low-temperature plasma sewage treatment equipment includes the following specific steps:

[0021] S1, first, inject the medical sewage to be treated into the light-transmitting tank through the second water inlet, the floating matter and impurities in the sewage are blocked and filtered by the filter screen, so as to prevent the floating matter and impurities from affecting the transmission of plasma discharge energy;

[0022] S2, then, turn on the ultraviolet lamp group and start the first motor, so that the first motor drives the first gear to rotate, the rotating ring drives the ultraviolet lamp group to perform circular motion, the microorganisms in the medical sewage in the light-transmitting tank are killed in all directions, the number of microorganisms in the medical sewage is reduced, the influence of the competition and inhibition of the microorganisms on the plasma reaction is avoided, the treatment effect and efficiency of the medical sewage are improved, and the cleaning brush also moves with the rotating ring to clean the outer wall of the light-transmitting tank, so as to prevent affecting the irradiation effect of the ultraviolet lamp group;

[0023] S3, after the microorganisms in the medical sewage are killed for a certain time, start the pipeline valve and the water pump, so that the medical sewage enters the inside of the treatment tank through the liquid pipeline, then use the low-temperature plasma generating device, the low-temperature plasma generating device generates low-temperature plasma, and the low-temperature plasma is transported to the aeration port through the gas pipeline, so that the low-temperature plasma starts to react with the medical sewage;

[0024] S4, then, start the second motor, so that the connecting column drives the rotating frame to rotate, when the rotating frame rotates, the third gear is continuously engaged with the second gear, the third gear drives the fourth gear to rotate, the stirring assembly stirs the medical sewage in the inside of the treatment tank, promotes the contact between the organic matter in the medical sewage and the plasma, and uniformly distributes the organic matter in the sewage and the plasma, fully oxidizes and degrades the organic matter in the medical sewage, kills bacteria and viruses, improves the treatment effect of the medical sewage, and thus realizes the purification treatment of the medical sewage.

[0025] The beneficial effects of the present application are as follows:

[0026] (1) The pre-treatment structure is arranged, when the medical sewage is injected into the light-transmitting tank, the filter screen can filter the floating objects and impurities in the medical sewage, prevent the impurities and floating objects from hindering the contact between the active species generated in the plasma and the organic pollutants, improve the treatment efficiency and degradation speed of the medical sewage, the first electric motor drives the first gear to rotate, the inner tooth ring drives the rotating ring to rotate, the ultraviolet lamp group moves with the rotating ring, irradiates the light-transmitting tank in all directions, disinfects and kills the microorganisms in the medical sewage in the light-transmitting tank, prevents a large number of microorganisms from competing with the active species generated in the plasma, improves the treatment effect of the medical sewage in the dielectric barrier discharge plasma treatment, and the cleaning brush also moves with the rotating ring, cleans the outer wall of the light-transmitting tank, prevents dust and impurities from shielding the ultraviolet rays, and improves the irradiation effect of the ultraviolet lamp group;

[0027] (2) The stirring mechanism is arranged, the second electric motor drives the connecting column to rotate, the connecting column drives the rotating frame and the third gear to rotate, the third gear at the upper position is continuously meshed with the second gear, and the third gear at the lower position is driven to rotate, when the third gear at the lower position rotates, the fourth gear drives the connecting handle to rotate, all the stirring assemblies perform circular motion around the connecting column under the action of the rotating plate, and each stirring assembly also performs circular motion around the fourth gear under the action of the fourth gear and the connecting handle, so that the stirring assemblies can uniformly stir the medical sewage, promote the contact between the organic matter in the sewage and the active species generated in the plasma reactor, improve the treatment effect, and uniformly distribute the organic matter in the sewage and the active species in the plasma reactor, so that the reliability of the treatment effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a first perspective view of the present application;

[0029] Figure 2 is a second perspective view of the present application;

[0030] Figure 3 is a partial structure schematic view of the present application;

[0031] Figure 4 is a first perspective view of the pre-treatment structure in the present application;

[0032] Figure 5 is a second perspective view of the pre-treatment structure in the present application;

[0033] Figure 6 is a first partial schematic view of the pre-treatment structure in the present application;

[0034] Figure 7 is the second partial view of the pretreatment structure in the application;

[0035] Figure 8 is the first perspective view of the stirring mechanism in the application;

[0036] Figure 9 is the second perspective view of the stirring mechanism in the application.

[0037] Fig. 1 is a processing tank; 101 is a first drainage port; 102 is an aeration port; 2 is a tank cover; 201 is an exhaust port; 202 is a first water inlet; 3 is a low-temperature plasma generating device; 301 is an air inlet; 302 is a plasma outlet; 4 is a pretreatment structure; 401 is a bottom plate; 402 is a light-transmitting tank body; 403 is a rotating ring; 404 is an inner tooth ring; 405 is a first gear; 406 is a first motor; 407 is a first mounting bracket; 408 is a first support leg; 409 is a second water outlet; 410 is a pipeline valve; 411 is a mounting block; 412 is a cleaning brush; 413 is a UV lamp group; 414 is a top cover; 415 is a fixing block; 416 is a bolt; 417 is a handle; 418 is a second water inlet; 419 is a support ring; 420 is a filter screen; 5 is a stirring mechanism; 501 is a second mounting bracket; 502 is a second motor; 503 is a connecting column; 504 is a sleeve ring; 505 is a rotating bracket; 506 is a second gear; 507 is a transmission shaft; 508 is a third gear; 509 is a fourth gear; 510 is a connecting handle; 511 is a stirring assembly; 6 is a gas pipeline; 7 is a water pump; 8 is a liquid pipeline; 9 is a second support leg. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the application clearer, the application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the application and do not limit the application.

[0039] As Figures 1 to 3As shown, a low-temperature plasma wastewater treatment device according to this embodiment includes a treatment tank 1. A first drain outlet 101 is provided on any side of the treatment tank 1, and an aeration port 102 is provided at the bottom of the treatment tank 1. Second support legs 9 are fixedly connected to the four corners of the bottom surface of the treatment tank 1. A tank cover plate 2 is fixedly connected to the top surface of the treatment tank 1. An exhaust port 201 is provided on the top surface of the tank cover plate 2 away from the first drain outlet 101. A first water inlet 202 is provided on the top surface of the tank cover plate 2 near the exhaust port 201. A low-temperature plasma generating device 3 is installed on one side of 101. An air inlet 301 is provided on the top surface of the low-temperature plasma generating device 3. A plasma output port 302 is provided on the side of the low-temperature plasma generating device 3 away from the first water inlet 202. A gas pipe 6 is installed on the plasma output port 302. The other end of the gas pipe 6 is installed on the aeration port 102. A stirring mechanism 5 is provided on the top surface of the tank cover plate 2 near the low-temperature plasma generating device 3. A pretreatment structure 4 is provided on the side of the tank cover plate 2 away from the low-temperature plasma generating device 3.

[0040] like Figures 4 to 7 As shown, the pretreatment structure 4 includes a base plate 401, a light-transmitting tank 402 fixedly connected to the top surface of the base plate 401, a rotating ring 403 rotatably connected to the outer wall of the base plate 401, an internal toothed ring 404 fixedly connected to the bottom surface of the rotating ring 403, a plurality of first support legs 408 fixedly connected to the bottom surface of the base plate 401, a first mounting bracket 407 fixedly connected to the first support legs 408, and a first motor 406 mounted on the top surface of the first mounting bracket 407. A first gear 405 is fixedly connected to the output shaft of 6. The first gear 405 meshes with the internal gear ring 404. A second water outlet 409 is provided on the base plate 401. A pipeline valve 410 is installed at the bottom end of the second water outlet 409. A water pump 7 is provided on the side of the pipeline valve 410 near the cleaning brush 412. The inlet of the water pump 7 is installed at the bottom end of the pipeline valve 410. A liquid pipeline 8 is installed on the outlet of the water pump 7. The other end of the liquid pipeline 8 is installed on the first water inlet 202.

[0041] The top surface of the light-transmitting tank body 402 is provided with a top cover 414, the center of the top surface of the top cover 414 is fixedly connected with a handle 417, the position close to the handle 417 of the top cover 414 is provided with a second water inlet 418, the two sides of the top cover 414 are fixedly connected with fixed blocks 415, the fixed blocks 415 located on the two sides are respectively provided with latches 416, the position close to the fixed blocks 415 of the inner wall of the light-transmitting tank body 402 is fixedly connected with a supporting ring 419, the top surface of the supporting ring 419 is provided with a filter screen 420, the top surface of the rotating ring 403 is symmetrically fixedly connected with mounting blocks 411, the top surface of any one of the mounting blocks 411 is fixedly connected with a cleaning brush 412, and the top surface of the other mounting block 411 is fixedly connected with an ultraviolet lamp group 413.

[0042] As shown in Figures 8 to 9 The stirring mechanism 5 includes a second mounting frame 501 fixedly connected to the top surface of the groove cover plate 2, a second motor 502 mounted to the top surface of the second mounting frame 501, a connecting column 503 fixedly connected to the output shaft of the second motor 502, the connecting column 503 penetrating through the groove cover plate 2, a sleeve ring 504 rotatably connected to the outer wall of the groove cover plate 2 at the bottom end position of the connecting column 503, the sleeve ring 504 being fixedly connected to the bottom surface of the groove cover plate 2, a rotating frame 505 fixedly connected to the bottom end of the second mounting frame 501, fourth gears 509 rotatably connected to the bottom surface of the rotating frame 505 close to the third gears 508, connecting handles 510 fixedly connected to the bottom surface of the fourth gears 509, and stirring assemblies 511 mounted to the bottom surface of the connecting handles 510 away from the fourth gears 509.

[0043] The outer wall of the sleeve ring 504 is fixedly connected with a second gear 506, a plurality of third gears 508 are uniformly distributed on the outer side of the second gear 506, a transmission shaft 507 is fixedly connected to the center position of the third gear 508, the transmission shaft 507 penetrates through the adjacent rotating frame 505, a third gear 508 is also fixedly connected to the outer wall of the bottom end of the transmission shaft 507, and the third gear 508 located at the upper position is in meshing connection with the second gear 506.

[0044] A treatment method of a low-temperature plasma sewage treatment equipment, comprising the following specific steps:

[0045] S1, first, the medical sewage and the like to be treated is injected into the light-transmitting tank body 402 through the second water inlet 418, the floating objects and impurities in the sewage are blocked and filtered by the filter screen 420, so as to prevent the floating objects and impurities from affecting the transmission of plasma discharge energy;

[0046] S2, then turn on the ultraviolet lamp group 413 and start the first motor 406, make the first motor 406 drive the first gear 405 rotate, make the rotating ring 403 drive the ultraviolet lamp group 413 make circumferential motion, kill the microorganism in the medical sewage in the light-transmitting tank 402 all-round, reduce the number of microorganism in the medical sewage, avoid the influence of the competition and inhibition of microorganism on the plasma reaction, improve the treatment effect and treatment efficiency of medical sewage, at the same time, the cleaning brush 412 will also move with the rotating ring 403, clean the outer wall of the light-transmitting tank 402, prevent dust and microorganism from affecting the irradiation effect of the ultraviolet lamp group 413;

[0047] S3, after a certain time of killing the microorganism in the medical sewage, start the pipeline valve 410 and the water pump 7, make the medical sewage enter the inside of the treatment tank 1 through the liquid pipeline 8, then use the low-temperature plasma generating device 3, make the low-temperature plasma generating device 3 generate low-temperature plasma, and transport the low-temperature plasma to the aeration port 102 through the gas pipeline 6, make the low-temperature plasma start to react with the medical sewage;

[0048] S4, then start the second motor 502, make the connecting column 503 drive the rotating frame 505 rotate, when the rotating frame 505 rotates, the third gear 508 will be engaged with the second gear 506 constantly, make the third gear 508 drive the fourth gear 509 rotate together, make the stirring assembly 511 stir the medical sewage in the inside of the treatment tank 1, promote the contact of the organic matter in the medical sewage and the plasma, and make the organic matter and the plasma in the sewage distribute uniformly, fully oxidize and degrade the organic matter in the medical sewage, kill bacteria and viruses, improve the treatment effect of medical sewage, so as to realize the purification treatment of medical sewage.

[0049] The above only describes the preferred embodiments of the present application, and is not used to limit the protection scope of the present application.

Claims

1. A low-temperature plasma medical wastewater treatment device, comprising a treatment tank (1), characterized in that: A first drain outlet (101) is provided on any side of the treatment tank (1), an aeration port (102) is provided at the bottom of the treatment tank (1), and second support legs (9) are fixedly connected to the four corners of the bottom surface of the treatment tank (1). A tank cover plate (2) is fixedly connected to the top surface of the treatment tank (1). An exhaust port (201) is provided on the side of the top surface of the tank cover plate (2) away from the first drain outlet (101). A first water inlet (202) is provided on the top surface of the tank cover plate (2) near the exhaust port (201). A low-temperature plasma device is installed on the side of the top surface of the tank cover plate (2) near the first drain outlet (101). The low-temperature plasma generating device (3) has an air inlet (301) on its top surface and a plasma output port (302) on the side away from the first water inlet (202). A gas pipe (6) is installed on the plasma output port (302), and the other end of the gas pipe (6) is installed on the aeration port (102). A stirring mechanism (5) is provided on the top surface of the tank cover plate (2) near the low-temperature plasma generating device (3), and a pretreatment structure (4) is provided on the side of the tank cover plate (2) away from the low-temperature plasma generating device (3). The pretreatment structure (4) includes a base plate (401), a light-transmitting tank (402) is fixedly connected to the top surface of the base plate (401), a rotating ring (403) is rotatably connected to the outer wall of the base plate (401), an internal gear ring (404) is fixedly connected to the bottom surface of the rotating ring (403), a plurality of first support legs (408) are fixedly connected to the bottom surface of the base plate (401), a first mounting bracket (407) is fixedly connected to the first support leg (408), a first motor (406) is mounted on the top surface of the first mounting bracket (407), a first gear (405) is fixedly connected to the output shaft of the first motor (406), and the first gear (405) meshes with the internal gear ring (404). Mounting blocks (411) are symmetrically fixedly connected to the top surface of the rotating ring (403). A cleaning brush (412) is fixedly connected to the top surface of any one of the mounting blocks (411), and an ultraviolet lamp group (413) is fixedly connected to the top surface of the other mounting block (411). The base plate (401) is provided with a second water outlet (409), and a pipe valve (410) is installed at the bottom end of the second water outlet (409). A water pump (7) is provided on the side of the pipe valve (410) near the cleaning brush (412). The inlet of the water pump (7) is installed at the bottom end of the pipe valve (410), and a liquid pipe (8) is installed on the outlet of the water pump (7). The other end of the liquid pipe (8) is installed on the first water inlet (202).

2. The low-temperature plasma medical wastewater treatment equipment according to claim 1, characterized in that, A top cover (414) is provided on the top surface of the light-transmitting tank (402). A handle (417) is fixedly connected to the center of the top surface of the top cover (414). A second water inlet (418) is provided on the top cover (414) near the handle (417). Fixing blocks (415) are fixedly connected to both sides of the top cover (414) and both sides of the light-transmitting tank (402). A pin (416) is provided in each of the fixing blocks (415) on both sides. A support ring (419) is fixedly connected to the inner wall of the light-transmitting tank (402) near the fixing block (415). A filter screen (420) is provided on the top surface of the support ring (419).

3. The low-temperature plasma medical wastewater treatment equipment according to claim 2, characterized in that, The stirring mechanism (5) includes a second mounting bracket (501), which is fixedly connected to the top surface of the tank cover plate (2). A second motor (502) is mounted on the top surface of the second mounting bracket (501). A connecting column (503) is fixedly connected to the output shaft of the second motor (502). The connecting column (503) penetrates the tank cover plate (2). A collar (504) is rotatably connected to the outer wall of the connecting column (503) at the bottom end of the tank cover plate (2). The collar (504) is fixedly connected to the bottom surface of the tank cover plate (2). A rotating frame (505) is fixedly connected to the bottom end of the second mounting bracket (501).

4. The low-temperature plasma medical wastewater treatment equipment according to claim 3, characterized in that, A second gear (506) is fixedly connected to the outer wall of the collar (504). Several third gears (508) are evenly distributed around the outer circumference of the second gear (506). A drive shaft (507) is fixedly connected to the center of the third gear (508). The drive shaft (507) passes through the adjacent rotating frame (505). A third gear (508) is also fixedly connected to the outer wall of the bottom end of the drive shaft (507). The third gear (508) located at the upper position meshes with the second gear (506).

5. The low-temperature plasma medical wastewater treatment equipment according to claim 4, characterized in that: The bottom surface of the rotating frame (505) near the third gear (508) is rotatably connected to a fourth gear (509). A connecting handle (510) is fixedly connected to the bottom surface of the fourth gear (509). A stirring component (511) is installed on the bottom surface of the connecting handle (510) away from the fourth gear (509).

6. The treatment method of a low-temperature plasma medical wastewater treatment device according to claim 5, characterized in that, The specific steps include the following: S1. First, medical wastewater to be treated is injected into the transparent tank (402) through the second inlet (418). Floating objects and impurities in the wastewater will be blocked and filtered by the filter screen (420) to prevent floating objects and impurities from affecting the transfer of plasma discharge energy. S2. Then turn on the ultraviolet lamp group (413) and start the first motor (406), so that the first motor (406) drives the first gear (405) to rotate, so that the rotating ring (403) drives the ultraviolet lamp group (413) to perform circular motion, so as to carry out all-round disinfection of microorganisms in the medical wastewater in the transparent tank (402), reduce the number of microorganisms in the medical wastewater, avoid the influence of microbial competition and inhibition on plasma reaction, and improve the treatment effect and efficiency of medical wastewater. At the same time, the cleaning brush (412) will also move with the rotating ring (403) to clean the outer wall of the transparent tank (402) to prevent it from affecting the irradiation effect of the ultraviolet lamp group (413). S3. After disinfecting the microorganisms in the medical wastewater for a certain period of time, start the pipeline valve (410) and water pump (7) to allow the medical wastewater to enter the treatment tank (1) through the liquid pipeline (8). Then, use the low-temperature plasma generation device (3) to generate low-temperature plasma and transport the low-temperature plasma to the aeration port (102) through the gas pipeline (6) so that the low-temperature plasma can start to react with the medical wastewater. S4. Then start the second motor (502) to make the connecting column (503) drive the rotating frame (505) to rotate. When the rotating frame (505) rotates, the third gear (508) will continuously mesh with the second gear (506), and the third gear (508) will drive the fourth gear (509) to rotate together, so that the stirring component (511) stirs the medical wastewater inside the treatment tank (1), promotes the contact between the organic matter in the medical wastewater and the plasma, and makes the organic matter in the wastewater and the plasma evenly distributed, fully oxidizes and degrades the organic matter in the medical wastewater, kills bacteria and viruses, improves the treatment effect of medical wastewater, and thus realizes the purification treatment of medical wastewater.

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