A low-temperature plasma organic wastewater treatment device

Abstract

The present invention discloses a low-temperature plasma organic wastewater treatment device, and the present invention relates to the technical field of sewage treatment. The present invention includes electrode plates, which are symmetrically arranged with respect to the center of the cylinder body, and one side of the two electrode plates close to each other is fixedly connected to the outer side surface of the cylinder body. A pole column is fixedly connected to the side of the electrode plate close to the cylinder body, and the surface of the pole column is fixedly connected to the inner side surface of the cylinder body. A stirring assembly is arranged inside the cylinder body, and the surface of the stirring assembly is fixedly connected to the inner side surface of the end cover. A dissolved air assembly is fixedly connected to the side of the bottom plate away from the cylinder body, and the pipeline of the dissolved air assembly extends into the cylinder body. An aeration assembly is arranged at the bottom of the cylinder body, and the surface of the aeration assembly is fixedly connected to the inner side surface of the cylinder body. The pole column on the electrode plate discharges to finally generate low-temperature plasma, which breaks the chemical bonds of organic molecules in the wastewater, decomposes them into smaller fragments or free radicals, and gradually oxidizes the organic pollutants into harmless substances such as carbon dioxide, water, and inorganic salts.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a low-temperature plasma organic wastewater treatment device. Background Art

[0002] Low-temperature plasma technology is an emerging oxidation process. Its principle is to convert electrical energy into chemical energy. By ionizing gas molecules, a local self-sustaining discharge area is formed. The gas is ionized to produce a large number of electrons, ions and excited particles, thereby forming a low-temperature plasma. The low-temperature plasma releases high-energy electrons. The high-energy electrons have enough energy to cause inelastic collisions with organic molecules in wastewater, break the chemical bonds of organic molecules, and decompose them into smaller fragments or free radicals, such as hydroxyl radicals, hydrogen radicals, oxygen atoms, etc. Among them, hydroxyl radicals have extremely high oxidation potentials and can undergo rapid and non-selective oxidation reactions with almost all organic pollutants, taking hydrogen atoms from organic molecules to form water and organic free radicals. Subsequently, the organic free radicals further react with other free radicals or oxygen to gradually oxidize organic pollutants into harmless substances such as carbon dioxide, water and inorganic salts, and produce physical effects such as ultraviolet rays and microwaves. The diffusion and reaction rate of pollutants in water are accelerated by ultraviolet light, microwaves and heat, so as to achieve the purpose of degrading organic pollutants.

[0003] Since the amount of dissolved gas in different sewage is different, the gas content directly affects the generation of low-temperature plasma. When treating sewage with insufficient dissolved gas, it is easy to cause poor sewage treatment effect. Therefore, we proposed a low-temperature plasma organic wastewater treatment device. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a low-temperature plasma organic wastewater treatment device, comprising:

[0005] A bottom plate, wherein the bottom of the bottom plate is fixedly connected to a supporting leg, a side of the bottom plate away from the supporting leg is fixedly connected to a cylinder, and a side of the cylinder away from the bottom plate is fixedly connected to an end cover;

[0006] A processing mechanism, wherein the processing mechanism is fixedly connected to the surface of the cylinder;

[0007] Wherein, the processing mechanism includes:

[0008] The pole plate is symmetrically arranged with respect to the cylinder, and the sides of the two pole plates close to each other are fixedly connected to the outer side of the cylinder, and the side of the pole plate close to the cylinder is fixedly connected to a pole post, and a plurality of pole posts are evenly distributed on the surface of the pole plate, and one end of the pole post away from the pole plate extends to the inside of the cylinder, and the surface of the pole post is fixedly connected to the inner side of the cylinder;

[0009] The two sides of the two plates that are away from each other are respectively connected to a positive power lead and a negative power lead;

[0010] A stirring assembly, wherein the stirring assembly is arranged inside the cylinder, and a surface of the stirring assembly is fixedly connected to an inner side surface of the end cover;

[0011] An air dissolving component, the air dissolving component is fixedly connected to a side of the bottom plate away from the cylinder, and a pipeline of the air dissolving component extends to the interior of the cylinder;

[0012] An aeration assembly, wherein the aeration assembly is arranged at the bottom of the cylinder, and the surface of the aeration assembly is fixedly connected to the inner side surface of the cylinder;

[0013] Sewage is injected into the cylinder, and the two plates are respectively connected to the positive and negative poles of the external power supply. The poles on the two plates discharge, ionizing the gas molecules in the sewage to form a local self-sustaining discharge area. The gas is ionized to produce a large number of electrons, ions and excited particles, thereby forming a low-temperature plasma. The low-temperature plasma releases high-energy electrons. The high-energy electrons have enough energy to cause inelastic collisions with organic molecules in the wastewater, break the chemical bonds of the organic molecules, and decompose them into smaller fragments or free radicals, such as hydroxyl free radicals, hydrogen free radicals, oxygen atoms, etc. Among them, hydroxyl free radicals have extremely high oxidation potentials and can undergo rapid and non-selective oxidation reactions with almost all organic pollutants, capturing hydrogen atoms from organic molecules to form water and organic free radicals. Subsequently, the organic free radicals further react with other free radicals or oxygen to gradually oxidize the organic pollutants into harmless substances such as carbon dioxide, water and inorganic salts. At the same time, ultraviolet rays will be generated during the low-temperature plasma discharge process. These ultraviolet rays can directly irradiate the organic pollutants, causing the organic molecules to absorb photon energy and undergo photolysis reactions, decomposing large molecular organic matter into small molecules. The quality of the wastewater can be further improved. The aeration component is started. The aeration component emits ultrasonic waves. The cavitation effect generated when ultrasonic waves propagate in the liquid forms countless tiny bubbles in the liquid. These bubbles expand and compress rapidly under the action of ultrasonic waves until they collapse, generating local high temperature, high pressure, strong shock waves and microjets. The cavitation effect of ultrasound can promote the generation and diffusion of active species in low-temperature plasma and enhance their contact probability with organic pollutants. At the same time, the high-temperature and high-pressure environment generated by the collapse of cavitation bubbles can also directly promote the pyrolysis reaction of organic pollutants and accelerate the degradation process of organic matter. The air in the bubbles can produce sufficient collisions with the electrons in the discharge process to obtain sufficient low-temperature plasma, which can treat wastewater containing high-concentration organic matter. The dissolved air component is started. The dissolved air component injects sufficient air into the wastewater to increase the amount of dissolved air in the wastewater, thereby providing sufficient air for the pole discharge to generate low-temperature plasma and also providing air for the aeration component to generate bubbles. The stirring component is started. The stirring component stirs the wastewater to make the wastewater evenly contact with the pole discharge area, thereby improving the wastewater treatment effect.

[0014] Furthermore, a feeding pipe is fixedly connected to the surface of the cylinder body. A discharging pipe is arranged inside the cylinder body. One end of the discharging pipe far from the end cover penetrates through the bottom plate, and the outer side surface of the discharging pipe is fixedly connected to the inner side surface of the bottom plate. A connecting plate is fixedly connected to the outer side surface of the discharging pipe, and the surface of the connecting plate is fixedly connected to one side of the bottom plate far from the cylinder body. Sewage is injected into the cylinder body through the feeding pipe. After the sewage treatment is completed, the valve of the discharging pipe is opened, and the treated sewage is discharged from the discharging pipe.

[0015] Furthermore, the aeration assembly includes a conical plate. The outer side surface of the conical plate is fixedly connected to the inner side surface of the cylinder body. The inner side surface of the conical plate is fixedly connected to the outer side surface of the discharging pipe. A coupling block is arranged at the interval between the conical plate and the bottom plate. One end of the coupling block far from the bottom plate penetrates through the conical plate, and the surface of the coupling block is fixedly connected to the inner side surface of the conical plate. A side of the coupling block close to the bottom plate is fixedly connected with an ultrasonic generator. The side of the ultrasonic generator far from the coupling block is fixedly connected to one side of the bottom plate far from the support leg. When the ultrasonic generator is started, the ultrasonic generator generates high-frequency vibrations, driving the coupling block to generate high-frequency vibrations, thereby generating ultrasonic waves in the sewage inside the cylinder body, generating a cavitation effect, causing bubbles to be generated in the sewage. At the same time, the fine impurities in the sewage serve as cavitation nuclei, capable of generating finer bubbles, obtaining a better sewage treatment effect. The air inside the bubbles is applied with an electric field, generating low-temperature plasma discharge, increasing the number of high-energy electrons, and obtaining a better sewage treatment effect.

[0016] Furthermore, several coupling blocks are arranged at the interval between the bottom plate and the conical plate, and all the coupling blocks are connected to the output end of the ultrasonic generator. A block body is arranged at the interval between the coupling block and the bottom plate, and the surface of the ultrasonic generator is fixedly connected to the inner side surface of the block body. One side of the coupling block far from the ultrasonic generator penetrates through the block body, and the inner side surface of the block body is fixedly connected to the surface of the coupling block. The block body protects the ultrasonic generator.

[0017] Furthermore, the stirring assembly includes a rotating shaft. The rotating shaft is arranged inside the cylinder body. Stirring blades are fixedly connected to the surface of the rotating shaft. The stirring blades are set as a part of a spiral shape, and several stirring blades are evenly distributed along the circumferential direction of the rotating shaft. The rotating shaft is driven to rotate, and the rotating shaft drives the stirring blades to rotate, thereby stirring the sewage, causing the bubbles to burst before floating out of the sewage, enabling the bubbles to release high temperature, high pressure, strong shock waves and microjets in the middle of the sewage, and making the organic matter in the vertical direction more evenly contact with the high-energy electrons, further improving the sewage treatment effect.

[0018] Further, the surface of the stirring blade is provided with grooves, which are opened on the side of the stirring blade away from the rotating shaft, and a plurality of grooves are evenly distributed on the side of the stirring blade away from the rotating shaft. The opening of the plurality of grooves can increase the contact area between the stirring blade and the bubbles during stirring, so as to more efficiently break the bubbles, enabling the bubbles to break in the sewage, and more effectively utilizing the local high temperature, high pressure, strong shock waves and microjets generated when the bubbles collapse.

[0019] Further, the stirring blade is made of air stone, the rotating shaft is hollow, and the pipeline of the air dissolving assembly extends into the rotating shaft. The surface of the air stone is porous. When ultrasonic waves pass through, it can provide a place for the aggregation of gas, easily form cavitation nuclei, and then develop into bubbles. Under the action of the centrifugal force of the rotation of the stirring blade, the bubbles are scattered throughout the sewage, so as to obtain better sewage treatment effect. Inject air into the rotating shaft and then into the stirring blade, so that the air can better dissolve in the sewage, providing a basis for the generation of low-temperature plasma.

[0020] Further, one end of the rotating shaft away from the bottom plate penetrates through the end cover, and the inner side surface of the end cover is rotationally connected with the outer side surface of the rotating shaft. One end of the rotating shaft located outside the cylinder body is fixedly connected with a motor, the output end of the motor is fixedly connected with the rotating shaft, the surface of the motor is fixedly connected with a fixing frame, and the fixing frame is fixedly installed on the side of the end cover away from the cylinder body. Start the motor, the output end of the motor drives the rotating shaft to rotate, and then drives the stirring blade to rotate, so as to stir the sewage.

[0021] Further, the air dissolving assembly includes an air dissolving pipe, which is arranged inside the rotating shaft, and the outer side surface of the air dissolving pipe is fixedly connected with the inner side surface of the rotating shaft. One end of the air dissolving pipe away from the end cover penetrates through the feeding pipe, and the outer side surface of the feeding pipe is fixedly connected with the outer side surface of the air dissolving pipe. The outer side surface of the rotating shaft is fixedly connected with an air dissolving ring. One side of the air dissolving ring away from the stirring blade penetrates through the rotating shaft, the surface of the air dissolving ring is fixedly connected with the inner side surface of the rotating shaft, and one side of the air dissolving ring away from the rotating shaft extends into the stirring blade, and the surface of the air dissolving ring is fixedly connected with the inner side surface of the stirring blade. The inner cavity of the air dissolving ring is communicated with the air dissolving pipe and the stirring blade. Air enters the air dissolving pipe, then enters the air dissolving ring, and finally enters the sewage from the stirring blade, increasing the air dissolution amount in the sewage, providing a basis for the generation of low-temperature plasma. At the same time, the stirring blade is made of air stone, which can generate fine bubbles when air passes through, increasing the dissolution effect. At the same time, the setting of the air dissolving ring can increase the connection strength between the stirring blade and the rotating shaft, and extend the service life of the stirring assembly.

[0022] Further, one end of the gas dissolving pipe away from the end cover is fixedly connected with a pump body. One side of the pump body away from the gas dissolving pipe is fixedly connected with an air inlet pipe. The surface of the pump body is fixedly connected with a mounting plate. One side of the mounting plate away from the pump body is fixedly connected with one side of the bottom plate away from the cylinder body. When the pump body is started, the pump body drives air to sequentially pass through the air inlet pipe, the pump body, the gas dissolving pipe, and the gas dissolving ring, and finally injects into the sewage through the stirring blades.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. By setting up the treatment mechanism, the electrode columns on the electrode plates discharge, and finally form low-temperature plasma, which decomposes organic molecules into smaller fragments or free radicals, and gradually oxidizes organic pollutants into harmless substances such as carbon dioxide, water, and inorganic salts. During the low-temperature plasma discharge process, ultraviolet rays are generated, enabling organic molecules to absorb photon energy and undergo photolysis reactions, decomposing macromolecular organic substances into small-molecular substances, further improving the sewage treatment effect. The aeration component emits ultrasonic waves, and the cavitation effect of the ultrasonic waves can promote the generation and diffusion of active species in the low-temperature plasma, enhancing the contact probability with organic pollutants. At the same time, the high-temperature and high-pressure environment generated by the collapse of cavitation bubbles can directly cause organic pollutants to undergo pyrolysis reactions, accelerating the degradation process of organic substances. The air in the bubbles can collide sufficiently with the electrons during the discharge process to obtain sufficient low-temperature plasma, capable of treating sewage containing high concentrations of organic substances. The gas dissolving component injects sufficient air into the sewage, increasing the dissolved gas volume in the sewage, thereby providing sufficient air for the electrode columns to discharge and generate low-temperature plasma, and also providing air for the aeration component to generate bubbles.

[0025] 2. By setting up the aeration component, ultrasonic waves are generated in the sewage in the cylinder body, thereby generating a cavitation effect, causing bubbles to be generated in the sewage. At the same time, the fine impurities in the sewage serve as cavitation nuclei, capable of generating finer bubbles, obtaining a better sewage treatment effect. The air in the bubbles is applied with an electric field to generate low-temperature plasma discharge, increasing the number of high-energy electrons, and obtaining a better sewage treatment effect.

[0026] 3. The present invention sets up a stirring component to agitate the sewage, causing the bubbles to burst before floating out of the sewage, so that the bubbles release high temperature, high pressure, intense shock waves and microjets in the middle of the sewage, making the organic matter in the vertical direction more evenly contact with high-energy electrons, further improving the sewage treatment effect. The opening of several tanks can increase the contact area between the stirring blades and the bubbles during agitation, thereby more efficiently bursting the bubbles, enabling all the bubbles to burst within the sewage, and more effectively utilizing the local high temperature, high pressure, intense shock waves and microjets generated when the bubbles collapse. The surface of the air stone is porous. When ultrasonic waves pass through, it can provide a place for the aggregation of gas, easily form cavitation nuclei, and then develop into bubbles, and under the action of the centrifugal force of the rotating stirring blades, be scattered throughout the sewage, thereby obtaining a better sewage treatment effect.

[0027] 4. The present invention sets up a dissolved air component. Air enters the dissolved air pipe, then enters the dissolved air ring, and finally enters the sewage inside from the stirring blades, increasing the dissolved air volume in the sewage, providing a basis for the generation of low-temperature plasma. At the same time, the stirring blades are made of air stones, which can generate fine bubbles when air passes through, increasing the dissolution effect. At the same time, the setting of the dissolved air ring can increase the connection strength between the stirring blades and the rotating shaft, extending the service life of the stirring component. Description of the Drawings

[0028] Figure 1 Schematic diagram of the low-temperature plasma organic wastewater treatment device of the present invention;

[0029] Figure 2 Schematic diagram of another perspective of the low-temperature plasma organic wastewater treatment device of the present invention;

[0030] Figure 3 Schematic diagram of the sectional structure of the cylinder of the present invention;

[0031] Figure 4 Schematic diagram of the conical plate structure of the present invention;

[0032] Figure 5 Schematic diagram of the ultrasonic generator of the present invention;

[0033] Figure 6 Schematic diagram of the stirring component structure of the present invention;

[0034] Figure 7 Schematic diagram of the dissolved air component structure of the present invention;

[0035] Figure 8 Schematic diagram of the dissolved air pipe structure of the present invention.

[0036] In the figure: 1. bottom plate; 2. support leg; 3. cylinder body; 4. end cover; 5. treatment mechanism; 51. feeding pipe; 52. discharging pipe; 53. connecting plate; 54. electrode plate; 55. electrode post; 56. stirring assembly; 561. rotating shaft; 562. stirring blade; 563. tank body; 564. motor; 565. fixing bracket; 57. dissolved air assembly; 571. dissolved air pipe; 572. dissolved air ring; 573. pump body; 574. air inlet pipe; 575. mounting plate; 58. aeration assembly; 581. conical plate; 582. coupling block; 583. ultrasonic generator; 584. block body. Detailed implementation mode

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation modes. The embodiments of the present invention are given for the purpose of illustration and description, and are not exhaustive or limited to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

[0038] Embodiment 1, please refer to Figures 1-5 , the present invention is a low-temperature plasma organic wastewater treatment device, including:

[0039] Bottom plate 1, the bottom of the bottom plate 1 is fixedly connected with support legs 2, one side of the bottom plate 1 away from the support legs 2 is fixedly connected with a cylinder body 3, and one side of the cylinder body 3 away from the bottom plate 1 is fixedly connected with an end cover 4;

[0040] Treatment mechanism 5, the treatment mechanism 5 is fixedly connected to the surface of the cylinder body 3;

[0041] Among them, the treatment mechanism 5 includes:

[0042] Electrode plates 54, the electrode plates 54 are symmetrically arranged with the cylinder body 3 as the center, and one side of the two electrode plates 54 close to each other is fixedly connected to the outer side surface of the cylinder body 3. One side of the electrode plate 54 close to the cylinder body 3 is fixedly connected with electrode posts 55. A plurality of electrode posts 55 are evenly distributed on the surface of the electrode plate 54. One end of the electrode post 55 away from the electrode plate 54 extends into the cylinder body 3, and the surface of the electrode post 55 is fixedly connected to the inner side surface of the cylinder body 3;

[0043] One side of the two electrode plates 54 away from each other is externally connected to the positive electrode wire and the negative electrode wire of the power supply respectively;

[0044] Stirring assembly 56, the stirring assembly 56 is arranged inside the cylinder body 3, and the surface of the stirring assembly 56 is fixedly connected to the inner side surface of the end cover 4;

[0045] The gas dissolving component 57 is fixedly connected to the side of the bottom plate 1 away from the cylinder 3, and the pipeline of the gas dissolving component 57 extends to the inside of the cylinder 3;

[0046] An aeration assembly 58, the aeration assembly 58 is arranged at the bottom of the cylinder 3, and the surface of the aeration assembly 58 is fixedly connected to the inner side surface of the cylinder 3;

[0047] Sewage is injected into the cylinder 3, and the two plates 54 are respectively connected to the positive and negative electrodes of the external power supply. The poles 55 on the two plates 54 discharge, so that the gas molecules in the sewage are ionized to form a local self-sustaining discharge area. The gas is ionized to produce a large number of electrons, ions and excited particles, thereby forming a low-temperature plasma. The low-temperature plasma releases high-energy electrons. The high-energy electrons have enough energy to cause inelastic collisions with organic molecules in the wastewater, break the chemical bonds of the organic molecules, and decompose them into smaller fragments or free radicals, such as hydroxyl free radicals, hydrogen free radicals, oxygen atoms, etc. Among them, the hydroxyl free radical has an extremely high oxidation potential and can undergo rapid and non-selective oxidation reactions with almost all organic pollutants, capture hydrogen atoms from organic molecules, and form water and organic free radicals. Subsequently, the organic free radicals further react with other free radicals or oxygen to gradually oxidize the organic pollutants into harmless substances such as carbon dioxide, water and inorganic salts. At the same time, ultraviolet rays are generated during the low-temperature plasma discharge process. These ultraviolet rays can directly irradiate the organic pollutants, causing the organic molecules to absorb photon energy and undergo photolysis reactions, decomposing large molecular organic matter into small molecular substances, and further To improve the sewage treatment effect, the aeration component 58 is started, and the aeration component 58 emits ultrasonic waves. The cavitation effect generated when the ultrasonic waves propagate in the liquid forms countless tiny bubbles in the liquid. These bubbles expand and compress rapidly under the action of the ultrasonic waves until they collapse, generating local high temperature, high pressure, strong shock waves and microjets. The cavitation effect of the ultrasound can promote the generation and diffusion of active species in the low-temperature plasma and enhance the contact probability between them and organic pollutants. At the same time, the high-temperature and high-pressure environment generated by the collapse of the cavitation bubbles can also directly promote the pyrolysis reaction of organic pollutants and accelerate the degradation process of organic matter. The air in the bubbles can produce sufficient collisions with the electrons in the discharge process to obtain sufficient low-temperature plasma, so that sewage containing high-concentration organic matter can be treated. The dissolved air component 57 is started, and the dissolved air component 57 injects sufficient air into the sewage to increase the amount of dissolved air in the sewage, thereby providing sufficient air for the pole 55 to discharge and generate low-temperature plasma, and also providing air for the aeration component 58 to generate bubbles. The stirring component 56 is started, and the stirring component 56 stirs the sewage to make the sewage contact evenly with the discharge area of ​​the pole 55, thereby improving the sewage treatment effect.

[0048] A feeding pipe 51 is fixedly connected to the surface of the cylinder body 3. A discharging pipe 52 is arranged inside the cylinder body 3. One end of the discharging pipe 52 far away from the end cover 4 penetrates through the bottom plate 1, and the outer side surface of the discharging pipe 52 is fixedly connected to the inner side surface of the bottom plate 1. A connecting plate 53 is fixedly connected to the outer side surface of the discharging pipe 52, and the surface of the connecting plate 53 is fixedly connected to the side of the bottom plate 1 far away from the cylinder body 3. Sewage is injected into the cylinder body 3 from the feeding pipe 51. After the sewage treatment is completed, the valve of the discharging pipe 52 is opened, and the treated sewage is discharged from the discharging pipe 52.

[0049] The aeration assembly 58 includes a conical plate 581. The outer side surface of the conical plate 581 is fixedly connected to the inner side surface of the cylinder body 3. The inner side surface of the conical plate 581 is fixedly connected to the outer side surface of the discharging pipe 52. A coupling block 582 is arranged at the interval between the conical plate 581 and the bottom plate 1. One end of the coupling block 582 far away from the bottom plate 1 penetrates through the conical plate 581, and the surface of the coupling block 582 is fixedly connected to the inner side surface of the conical plate 581. A ultrasonic generator 583 is fixedly connected to the side of the coupling block 582 close to the bottom plate 1. The side of the ultrasonic generator 583 far away from the coupling block 582 is fixedly connected to the side of the bottom plate 1 far away from the support leg 2. When the ultrasonic generator 583 is started, the ultrasonic generator 583 generates high-frequency vibration, drives the coupling block 582 to generate high-frequency vibration, and then generates ultrasonic waves in the sewage in the cylinder body 3, thereby generating a cavitation effect, generating bubbles in the sewage. At the same time, the fine impurities in the sewage serve as cavitation nuclei, and can generate finer bubbles, obtaining a better sewage treatment effect. The air in the bubbles is applied with an electric field to generate low-temperature plasma discharge, increasing the number of high-energy electrons, and obtaining a better sewage treatment effect.

[0050] A plurality of coupling blocks 582 are arranged at the interval between the bottom plate 1 and the conical plate 581, and all the plurality of coupling blocks 582 are connected to the output end of the ultrasonic generator 583. A block body 584 is arranged at the interval between the coupling block 582 and the bottom plate 1, and the surface of the ultrasonic generator 583 is fixedly connected to the inner side surface of the block body 584. One side of the coupling block 582 far away from the ultrasonic generator 583 penetrates through the block body 584, and the inner side surface of the block body 584 is fixedly connected to the surface of the coupling block 582. The block body 584 protects the ultrasonic generator 583.

[0051] Example 2, please refer to Figures 1-8, the stirring assembly 56 includes a rotating shaft 561 disposed inside the cylinder body 3. A stirring blade 562 is fixedly connected to the surface of the rotating shaft 561. The stirring blade 562 is set as a part of a spiral shape, and a plurality of stirring blades 562 are evenly distributed along the circumferential direction of the rotating shaft 561. Driving the rotation of the rotating shaft 561, the rotating shaft 561 drives the stirring blade 562 to rotate, thereby agitating the sewage, causing the bubbles to burst before floating out of the sewage, and enabling the bubbles to release high temperature, high pressure, intense shock waves and microjets in the middle of the sewage, making the organic matter in the vertical direction more evenly contact with high-energy electrons, and further improving the sewage treatment effect.

[0052] A groove 563 is formed on the surface of the stirring blade 562. The groove 563 is formed on the side of the stirring blade 562 away from the rotating shaft 561, and a plurality of grooves 563 are evenly distributed on the side of the stirring blade 562 away from the rotating shaft 561. The formation of the plurality of grooves 563 can increase the contact area between the stirring blade 562 and the bubbles during agitation, thereby more efficiently bursting the bubbles, enabling the bubbles to burst within the sewage, and more effectively utilizing the local high temperature, high pressure, intense shock waves and microjets generated when the bubbles collapse.

[0053] The stirring blade 562 is made of an air stone. The rotating shaft 561 is hollow, and the pipeline of the air dissolution assembly 57 extends into the rotating shaft 561. The surface of the air stone is porous. When ultrasonic waves pass through, it can provide a place for the aggregation of gas, easily form cavitation nuclei, and then develop into bubbles. Under the action of the centrifugal force of the rotation of the stirring blade 562, the bubbles are scattered throughout the sewage, thereby obtaining a better sewage treatment effect. Injecting air into the rotating shaft 561 and then into the stirring blade 562, so that the air can better dissolve in the sewage, providing a basis for the generation of low-temperature plasma.

[0054] One end of the rotating shaft 561 away from the bottom plate 1 penetrates through the end cover 4, and the inner side surface of the end cover 4 is rotatably connected to the outer side surface of the rotating shaft 561. One end of the rotating shaft 561 located outside the cylinder body 3 is fixedly connected with a motor 564. The output end of the motor 564 is fixedly connected with the rotating shaft 561. A fixing frame 565 is fixedly connected to the surface of the motor 564. The fixing frame 565 is fixedly installed on the side of the end cover 4 away from the cylinder body 3. Starting the motor 564, the output end of the motor 564 drives the rotating shaft 561 to rotate, and then drives the stirring blade 562 to rotate, thereby agitating the sewage.

[0055] The air dissolving assembly 57 includes an air dissolving pipe 571 which is arranged inside the rotating shaft 561, and the outer side surface of the air dissolving pipe 571 is fixedly connected to the inner side surface of the rotating shaft 561. One end of the air dissolving pipe 571 away from the end cover 4 penetrates through the blanking pipe 52, and the outer side surface of the blanking pipe 52 is fixedly connected to the outer side surface of the air dissolving pipe 571. An air dissolving ring 572 is fixedly connected to the outer side surface of the rotating shaft 561. One side of the air dissolving ring 572 away from the stirring blade 562 penetrates through the rotating shaft 561, and the surface of the air dissolving ring 572 is fixedly connected to the inner side surface of the rotating shaft 561. One side of the air dissolving ring 572 away from the rotating shaft 561 extends into the stirring blade 562, and the surface of the air dissolving ring 572 is fixedly connected to the inner side surface of the stirring blade 562. The inner cavity of the air dissolving ring 572 is communicated with the air dissolving pipe 571 and the stirring blade 562. Air enters the air dissolving pipe 571, then enters the air dissolving ring 572, and finally enters the sewage from the stirring blade 562, increasing the dissolved air amount in the sewage and providing a basis for the generation of low-temperature plasma.

[0056] A pump body 573 is fixedly connected to one end of the air dissolving pipe 571 away from the end cover 4. An air inlet pipe 574 is fixedly connected to one side of the pump body 573 away from the air dissolving pipe 571. A mounting plate 575 is fixedly connected to the surface of the pump body 573. One side of the mounting plate 575 away from the pump body 573 is fixedly connected to one side of the bottom plate 1 away from the cylinder body 3. When the pump body 573 is started, the pump body 573 drives air to sequentially pass through the air inlet pipe 574, the pump body 573, the air dissolving pipe 571, and the air dissolving ring 572, and finally injects into the sewage from the stirring blade 562.

[0057] When in use, sewage is injected from the feed pipe 51, and the sewage enters the cylinder 3. After the sewage is treated, the valve of the discharge pipe 52 is opened to discharge the treated sewage from the discharge pipe 52, and the sewage is injected into the cylinder 3. The two plates 54 are respectively connected to the positive and negative poles of the external power supply, and the poles 55 on the two plates 54 are discharged, and the ultrasonic generator 583 is started. The ultrasonic generator 583 generates high-frequency vibrations, which drive the coupling block 582 to generate high-frequency vibrations, and then ultrasonic waves are generated in the sewage in the cylinder 3, thereby generating a cavitation effect, so that bubbles are generated in the sewage, and the air in the bubbles and the air in the sewage are applied with an electric field, generating low-temperature plasma discharge, forming a local self-sustaining discharge area, and the gas is ionized to generate a large number of electrons, ions and excited state particles, thereby forming a low-temperature plasma. The low-temperature plasma releases high-energy electrons. The high-energy electrons have enough energy to cause inelastic collisions with organic molecules in the wastewater, break the chemical bonds of the organic molecules, and decompose them into smaller fragments or free radicals, such as hydroxyl free radicals, hydrogen free radicals, oxygen atoms, etc., among which the hydroxyl free radicals have extremely The high oxidation potential can react rapidly and non-selectively with almost all organic pollutants, taking hydrogen atoms from organic molecules to form water and organic free radicals, which then further react with other free radicals or oxygen to gradually oxidize organic pollutants into harmless substances such as carbon dioxide, water and inorganic salts. The pump body 573 is started, and the pump body 573 drives air to pass through the air inlet pipe 574, the pump body 573, the air dissolving pipe 571, and the air dissolving ring 572 in sequence, and finally injects air into the sewage from the stirring blade 562, and generates fine bubbles to increase the amount of dissolved air in the sewage. The motor 564 is started, and the output end of the motor 564 drives the rotating shaft 561 to rotate, and then drives the stirring blade 562 to rotate, thereby stirring the sewage, so that the bubbles burst before floating out of the sewage. The surface of the air stone is loose and porous. When the ultrasonic wave passes through, it can provide a place for the gas to gather, easily forming cavitation nuclei, and then developing into bubbles. Under the centrifugal force of the rotating stirring blade 562, the bubbles generated by the cavitation reaction and the bubbles generated by the air stone are spread throughout the sewage, thereby obtaining a better sewage treatment effect.

[0058] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A low-temperature plasma organic wastewater treatment device, characterized in that, Comprising: A bottom plate (1), a support leg (2) is fixedly connected to the bottom of the bottom plate (1), a cylinder body (3) is fixedly connected to one side of the bottom plate (1) away from the support leg (2), and an end cover (4) is fixedly connected to one side of the cylinder body (3) away from the bottom plate (1); A treatment mechanism (5), the treatment mechanism (5) is fixedly connected to the surface of the cylinder body (3); Wherein, the treatment mechanism (5) comprises: Electrode plates (54), the electrode plates (54) are symmetrically arranged with the cylinder body (3) as the center, and one side of the two electrode plates (54) close to each other is fixedly connected to the outer side surface of the cylinder body (3), a pole column (55) is fixedly connected to the side of the electrode plate (54) close to the cylinder body (3), a plurality of pole columns (55) are evenly distributed on the surface of the electrode plate (54), one end of the pole column (55) away from the electrode plate (54) extends into the cylinder body (3), and the surface of the pole column (55) is fixedly connected to the inner side surface of the cylinder body (3); One side of the two electrode plates (54) away from each other is externally connected to the positive electrode wire and the negative electrode wire of the power supply respectively; A stirring assembly (56), the stirring assembly (56) is arranged inside the cylinder body (3), and the surface of the stirring assembly (56) is fixedly connected to the inner side surface of the end cover (4); A dissolved air assembly (57), the dissolved air assembly (57) is fixedly connected to one side of the bottom plate (1) away from the cylinder body (3), and the pipeline of the dissolved air assembly (57) extends into the cylinder body (3); An aeration assembly (58), the aeration assembly (58) is arranged at the bottom of the cylinder body (3), and the surface of the aeration assembly (58) is fixedly connected to the inner side surface of the cylinder body (3); The stirring assembly (56) comprises a rotating shaft (561), the rotating shaft (561) is arranged inside the cylinder body (3), a stirring blade (562) is fixedly connected to the surface of the rotating shaft (561), the stirring blade (562) is arranged as a part of a spiral shape, and a plurality of stirring blades (562) are evenly distributed along the circumferential direction of the rotating shaft (561); A groove body (563) is formed on the surface of the stirring blade (562), the groove body (563) is formed on the side of the stirring blade (562) away from the rotating shaft (561), and a plurality of groove bodies (563) are evenly distributed on the side of the stirring blade (562) away from the rotating shaft (561); The stirring blade (562) is made of an air stone, the rotating shaft (561) is hollow, and the pipeline of the dissolved air assembly (57) extends into the rotating shaft (561); One end of the rotating shaft (561) away from the bottom plate (1) penetrates through the end cover (4), and the inner side surface of the end cover (4) is rotationally connected to the outer side surface of the rotating shaft (561), a motor (564) is fixedly connected to the end of the rotating shaft (561) located outside the cylinder body (3), the output end of the motor (564) is fixedly connected to the rotating shaft (561), a fixing frame (565) is fixedly connected to the surface of the motor (564), and the fixing frame (565) is fixedly installed on the side of the end cover (4) away from the cylinder body (3); The dissolved air component (57) includes a dissolved air pipe (571). The dissolved air pipe (571) is arranged inside the rotating shaft (561), and the outer side surface of the dissolved air pipe (571) is fixedly connected to the inner side surface of the rotating shaft (561). One end of the dissolved air pipe (571) far from the end cover (4) penetrates through the blanking pipe (52), and the outer side surface of the blanking pipe (52) is fixedly connected to the outer side surface of the dissolved air pipe (571). A dissolved air ring (572) is fixedly connected to the outer side surface of the rotating shaft (561). One side of the dissolved air ring (572) far from the stirring blade (562) penetrates through the rotating shaft (561). The surface of the dissolved air ring (572) is fixedly connected to the inner side surface of the rotating shaft (561). One side of the dissolved air ring (572) far from the rotating shaft (561) extends into the stirring blade (562). The surface of the dissolved air ring (572) is fixedly connected to the inner side surface of the stirring blade (562). The inner cavity of the dissolved air ring (572) is communicated with the dissolved air pipe (571) and the stirring blade (562).

2. The low-temperature plasma organic wastewater treatment device according to claim 1, wherein: A feeding pipe (51) is fixedly connected to the surface of the cylinder body (3). A blanking pipe (52) is arranged inside the cylinder body (3). One end of the blanking pipe (52) far from the end cover (4) penetrates through the bottom plate (1), and the outer side surface of the blanking pipe (52) is fixedly connected to the inner side surface of the bottom plate (1). A connecting plate (53) is fixedly connected to the outer side surface of the blanking pipe (52), and the surface of the connecting plate (53) is fixedly connected to one side of the bottom plate (1) far from the cylinder body (3).

3. The low-temperature plasma organic wastewater treatment device according to claim 2, wherein: The aeration component (58) includes a conical plate (581). The outer side surface of the conical plate (581) is fixedly connected to the inner side surface of the cylinder body (3). The inner side surface of the conical plate (581) is fixedly connected to the outer side surface of the blanking pipe (52). A coupling block (582) is arranged at the interval between the conical plate (581) and the bottom plate (1). One end of the coupling block (582) far from the bottom plate (1) penetrates through the conical plate (581). The surface of the coupling block (582) is fixedly connected to the inner side surface of the conical plate (581). An ultrasonic generator (583) is fixedly connected to one side of the coupling block (582) close to the bottom plate (1). One side of the ultrasonic generator (583) far from the coupling block (582) is fixedly connected to one side of the bottom plate (1) far from the support leg (2).

4. The low-temperature plasma organic wastewater treatment device according to claim 3, wherein: A plurality of coupling blocks (582) are arranged at the interval between the bottom plate (1) and the conical plate (581), and all the plurality of coupling blocks (582) are connected to the output end of the ultrasonic generator (583). A block body (584) is arranged at the interval between the coupling block (582) and the bottom plate (1), and the surface of the ultrasonic generator (583) is fixedly connected to the inner side surface of the block body (584). One side of the coupling block (582) far from the ultrasonic generator (583) penetrates through the block body (584), and the inner side surface of the block body (584) is fixedly connected to the surface of the coupling block (582).

5. The low-temperature plasma organic wastewater treatment device according to claim 4, characterized in that: One end of the gas dissolving pipe (571) far away from the end cover (4) is fixedly connected with a pump body (573). One side of the pump body (573) far away from the gas dissolving pipe (571) is fixedly connected with an air inlet pipe (574). The surface of the pump body (573) is fixedly connected with a mounting plate (575). One side of the mounting plate (575) far away from the pump body (573) is fixedly connected with one side of the bottom plate (1) far away from the cylinder body (3).

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