Low-temperature plasma organic wastewater treatment device

Abstract

The invention discloses a low-temperature plasma organic wastewater treatment device, and relates to the technical field of sewage treatment. The device comprises polar plates, the polar plates and a cylinder are arranged in a central symmetry mode, the sides, close to each other, of the two polar plates are fixedly connected with the outer side face of the cylinder, the sides, close to the cylinder, of the polar plates are fixedly connected with polar columns, and the surfaces of the polar columns are fixedly connected with the inner side face of the cylinder; the surface of the stirring assembly is fixedly connected with the inner side face of the end cover, the gas dissolving assembly is fixedly connected to the side, away from the cylinder, of the bottom plate, a pipeline of the gas dissolving assembly extends into the cylinder, the aeration assembly is arranged at the bottom of the cylinder, the surface of the aeration assembly is fixedly connected with the inner side face of the cylinder, and a pole on the pole plate discharges. Finally, low-temperature plasma is generated, chemical bonds of organic molecules in the wastewater are broken, the organic molecules are decomposed into small fragments or free radicals, and organic pollutants are gradually oxidized into harmless substances such as carbon dioxide, water and inorganic salt.

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, a feeding pipe is arranged inside the cylinder, the end of the feeding pipe away from the end cover passes through the bottom plate, and the outer side surface of the feeding pipe is fixedly connected to the inner side surface of the bottom plate, the outer side surface of the feeding pipe is fixedly connected to a connecting plate, and the surface of the connecting plate is fixedly connected to the side of the bottom plate away from the cylinder, sewage is injected from the feeding pipe, the sewage enters the interior of the cylinder, and after the sewage is treated, the valve of the feeding pipe is opened to discharge the treated sewage from the feeding pipe.

[0015] Furthermore, the aeration assembly includes a cone plate, the outer side surface of the cone plate is fixedly connected to the inner side surface of the cylinder, the inner side surface of the cone plate is fixedly connected to the outer side surface of the discharge pipe, a coupling block is provided at the interval between the cone plate and the bottom plate, the end of the coupling block away from the bottom plate passes through the cone plate, the surface of the coupling block is fixedly connected to the inner side surface of the cone plate, an ultrasonic generator is fixedly connected to the side of the coupling block close to the bottom plate, the side of the ultrasonic generator away from the coupling block is fixedly connected to the side of the bottom plate away from the supporting legs, the ultrasonic generator is started, the ultrasonic generator generates high-frequency vibration, drives the coupling block to generate high-frequency vibration, and then generates ultrasonic waves in the sewage in the cylinder, thereby generating a cavitation effect, so that bubbles are generated in the sewage, and at the same time, the fine impurities in the sewage act as cavitation nuclei, which can generate finer bubbles, thereby obtaining a better sewage treatment effect, and the air in 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, a plurality of coupling blocks are arranged at the interval between the bottom plate and the cone plate, and the plurality of 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 of the block body, a side of the coupling block away from the ultrasonic generator passes through the block body, and the inner side of the block body is fixedly connected to the surface of the coupling block, and the block body protects the ultrasonic generator.

[0017] Furthermore, the stirring assembly includes a rotating shaft, which is arranged inside the cylinder, and a stirring blade is fixedly connected to the surface of the rotating shaft. The stirring blade is arranged as a spiral part, and a plurality of stirring blades are evenly distributed along the circumference of the rotating shaft. The rotating shaft is driven to rotate, and the rotating shaft drives the stirring blade to rotate, thereby stirring the sewage, so that the bubbles burst before floating out of the sewage, and the bubbles release high temperature, high pressure and strong shock waves and microjets in the middle of the sewage, so that the organic matter in the vertical direction is more evenly contacted with the high-energy electrons, thereby further improving the sewage treatment effect.

[0018] Furthermore, a groove is provided on the surface of the stirring blade, and the groove is provided 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 a plurality of grooves can increase the contact area between the stirring blade and the bubbles during stirring, thereby more efficiently bursting the bubbles, so that the bubbles can all be burst in the sewage, and more effectively utilize the local high temperature, high pressure, strong shock wave and microjets generated when the bubbles collapse.

[0019] Furthermore, the stirring blade is made of air stone, the rotating shaft is hollow, and the pipeline of the gas dissolving component extends to the inside of the rotating shaft. The surface of the air stone is loose and porous. When ultrasonic waves pass through, it can provide a place for gas to gather, easily forming cavitation nuclei, and then developing into bubbles. Under the centrifugal force of the rotating stirring blade, the bubbles are spread throughout the sewage, thereby obtaining a better sewage treatment effect. The air is injected into the rotating shaft and then into the stirring blade, so that the air can be better dissolved in the sewage, providing a basis for the generation of low-temperature plasma.

[0020] Furthermore, one end of the rotating shaft away from the bottom plate passes through the end cover, and the inner side surface of the end cover is rotatably connected to the outer side surface of the rotating shaft, the end of the rotating shaft located outside the cylinder is fixedly connected to a motor, the output end of the motor is fixedly connected to the rotating shaft, and the surface of the motor is fixedly connected to a fixing frame, which is fixedly installed on a side of the end cover away from the cylinder. When the motor is started, the output end of the motor drives the rotating shaft to rotate, and then drives the stirring blades to rotate, thereby stirring the sewage.

[0021] Furthermore, the air dissolving component 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 to the inner side surface of the rotating shaft, the end of the air dissolving pipe away from the end cover passes through the feed pipe, and the outer side surface of the feed pipe is fixedly connected to 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, the side of the air dissolving ring away from the stirring blade passes through the rotating shaft, the surface of the air dissolving ring is fixedly connected to the inner side surface of the rotating shaft, the side of the air dissolving ring away from the rotating shaft extends to the inside of the stirring blade, the surface of the air dissolving ring is fixedly connected to the inner side surface of the stirring blade, the inner cavity of the air dissolving ring is connected with the air dissolving pipe and the stirring blade, the air enters the air dissolving pipe, then enters the air dissolving ring, and finally enters the sewage from the stirring blade, thereby increasing the amount of dissolved air in the sewage and providing a basis for the generation of low-temperature plasma, and at the same time, the stirring blade is made of air stone, which can generate fine bubbles when air passes through, thereby increasing the dissolution effect, and at the same time, the provision of the air dissolving ring can increase the connection strength between the stirring blade and the rotating shaft, thereby extending the service life of the stirring component.

[0022] Furthermore, one end of the air dissolving tube away from the end cover is fixedly connected to the pump body, the side of the pump body away from the air dissolving tube is fixedly connected to the air inlet pipe, the surface of the pump body is fixedly connected to a mounting plate, the side of the mounting plate away from the pump body is fixedly connected to the side of the bottom plate away from the cylinder body, and the pump body is started, and the pump body drives the air to pass through the air inlet pipe, the pump body, the air dissolving tube, and the air dissolving ring in sequence, and finally injected into the sewage from the stirring blade.

[0023] The present invention has the beneficial effects:

[0024] 1. The present invention sets a treatment mechanism, and the poles on the pole plates discharge, and finally forms a low-temperature plasma, decomposing organic molecules into smaller fragments or free radicals, and gradually oxidizing organic pollutants into harmless substances such as carbon dioxide, water and inorganic salts. Ultraviolet rays are generated during the low-temperature plasma discharge process, so that organic molecules absorb photon energy, undergo photolysis reactions, and decompose macromolecular organic matter into small molecular substances, further improving the sewage treatment effect. The aeration component emits ultrasonic waves, and 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 bubble can also directly promote the pyrolysis reaction of organic pollutants, which can accelerate the degradation process of organic matter. The air in the bubbles can produce sufficient collisions with the electrons in the discharge process, and sufficient low-temperature plasma is obtained, so that sewage containing high-concentration organic matter can be treated. The dissolved air component injects sufficient air into the sewage to increase the amount of dissolved air in the sewage, thereby providing sufficient air for the pole discharge to generate low-temperature plasma, and also providing air for the aeration component to generate bubbles.

[0025] 2. The present invention generates ultrasonic waves in the sewage in the cylinder by setting an aeration component, thereby producing 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 to produce finer bubbles, thereby obtaining a better sewage treatment effect. An electric field is applied to the air in the bubbles to generate low-temperature plasma discharge, thereby increasing the number of high-energy electrons and obtaining a better sewage treatment effect.

[0026] 3. The present invention stirs the sewage by setting a stirring component, so that the bubbles burst before floating out of the sewage, and the bubbles release high temperature, high pressure, strong shock waves and microjets in the middle of the sewage, so that the organic matter in the vertical direction is more evenly in contact with the high-energy electrons, and the sewage treatment effect is further improved. The opening of several troughs can increase the contact area between the stirring blade and the bubbles during stirring, so as to more efficiently burst the bubbles, so that the bubbles can all burst in the sewage, and more effectively utilize the local high temperature, high pressure, strong shock waves and microjets generated when the bubbles collapse. 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, and under the action of the centrifugal force of the rotating stirring blade, it is spread to the entire sewage, thereby obtaining a better sewage treatment effect.

[0027] 4. The present invention sets a dissolved air component, and air enters the dissolved air pipe, then enters the dissolved air ring, and finally enters the sewage from the stirring blade, thereby increasing the amount of dissolved air in the sewage and 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, thereby increasing the dissolution effect. At the same time, the setting of the dissolved air ring can increase the connection strength between the stirring blade and the rotating shaft, thereby extending the service life of the stirring component. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of a low-temperature plasma organic wastewater treatment device of the present invention;

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

[0030] Figure 3 It is a schematic diagram of the cross-sectional structure of the cylinder of the present invention;

[0031] Figure 4 It is a schematic diagram of the cone-plate structure of the present invention;

[0032] Figure 5 It is a schematic diagram of the structure of the ultrasonic generator of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the stirring assembly of the present invention;

[0034] Figure 7 It is a schematic diagram of the structure of the gas dissolving component of the present invention;

[0035] Figure 8 It is a schematic diagram of the structure of the gas dissolving tube of the present invention.

[0036] In the figure: 1, bottom plate; 2, supporting legs; 3, cylinder; 4, end cover; 5, processing mechanism; 51, feeding pipe; 52, discharging pipe; 53, connecting plate; 54, pole plate; 55, pole column; 56, stirring assembly; 561, rotating shaft; 562, stirring blade; 563, tank body; 564, motor; 565, fixing frame; 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, cone plate; 582, coupling block; 583, ultrasonic generator; 584, block body. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order 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 thereby design various embodiments with various modifications suitable for specific uses.

[0038] Example 1, please refer to Figure 1-Figure 5 The present invention is a low-temperature plasma organic wastewater treatment device, comprising:

[0039] A bottom plate 1, a support leg 2 is fixedly connected to the bottom of the bottom plate 1, a cylinder 3 is fixedly connected to the side of the bottom plate 1 away from the support leg 2, and an end cover 4 is fixedly connected to the side of the cylinder 3 away from the bottom plate 1;

[0040] A processing mechanism 5, which is fixedly connected to the surface of the cylinder 3;

[0041] Wherein, the processing mechanism 5 comprises:

[0042] The pole plate 54 is symmetrically arranged with respect to the cylinder 3, and the sides of the two pole plates 54 close to each other are fixedly connected to the outer side of the cylinder 3, and the side of the pole plate 54 close to the cylinder 3 is fixedly connected with a pole post 55, and a plurality of pole posts 55 are evenly distributed on the surface of the pole plate 54, and one end of the pole post 55 away from the pole plate 54 extends to the inside of the cylinder 3, and the surface of the pole post 55 is fixedly connected to the inner side of the cylinder 3;

[0043] The two electrodes 54 are connected to a positive power lead and a negative power lead at the sides away from each other.

[0044] A stirring assembly 56, which is disposed inside the cylinder 3, and a surface of the stirring assembly 56 is fixedly connected to an 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 loading pipe 51 is fixedly connected to the surface of the cylinder 3, and a discharge pipe 52 is arranged inside the cylinder 3. The end of the discharge pipe 52 away from the end cover 4 passes through the bottom plate 1, and the outer side surface of the discharge 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 discharge pipe 52, and the surface of the connecting plate 53 is fixedly connected to the side of the bottom plate 1 away from the cylinder 3. Sewage is injected from the loading pipe 51 and enters the inside of 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.

[0049] The aeration assembly 58 includes a cone plate 581, the outer side of the cone plate 581 is fixedly connected to the inner side of the cylinder 3, the inner side of the cone plate 581 is fixedly connected to the outer side of the discharge pipe 52, a coupling block 582 is arranged at the interval between the cone plate 581 and the bottom plate 1, the end of the coupling block 582 away from the bottom plate 1 passes through the cone plate 581, the surface of the coupling block 582 is fixedly connected to the inner side of the cone plate 581, the side of the coupling block 582 close to the bottom plate 1 is fixedly connected to an ultrasonic generator 583, and the side of the ultrasonic generator 583 away from the coupling block 582 is fixedly connected to the outer side of the discharge pipe 52. The bottom plate 1 is fixedly connected to one side away from the supporting leg 2, 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 generate ultrasonic waves in the sewage in the cylinder 3, thereby generating a cavitation effect, causing bubbles to be generated in the sewage. At the same time, the fine impurities in the sewage act as cavitation nuclei to generate more dense bubbles, thereby obtaining a better sewage treatment effect. The air in the bubbles is applied with an electric field to generate low-temperature plasma discharge, thereby 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 base plate 1 and the cone plate 581, and 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 base plate 1, and the surface of the ultrasonic generator 583 is fixedly connected to the inner side surface of the block body 584. The side of the coupling block 582 away from the ultrasonic generator 583 passes 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 Figure 1-Figure 8The stirring assembly 56 includes a rotating shaft 561, which is arranged inside the cylinder 3. A stirring blade 562 is fixedly connected to the surface of the rotating shaft 561. The stirring blade 562 is arranged as a spiral part, and a number of stirring blades 562 are evenly distributed along the circumference of the rotating shaft 561. The rotating shaft 561 is driven to rotate, and the rotating shaft 561 drives the stirring blade 562 to rotate, thereby stirring the sewage, so that the bubbles burst before floating out of the sewage, and the bubbles release high temperature, high pressure and strong shock waves and microjets in the middle of the sewage, so that the organic matter in the vertical direction is more evenly in contact with the high-energy electrons, further improving the sewage treatment effect.

[0052] A groove 563 is provided on the surface of the stirring blade 562. The groove 563 is provided 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 opening of a plurality of grooves 563 can increase the contact area between the stirring blade 562 and the bubbles during stirring, thereby more efficiently bursting the bubbles, so that the bubbles can all burst in the sewage, and more effectively utilize the local high temperature, high pressure, strong shock wave and micro jet generated when the bubbles collapse.

[0053] The stirring blade 562 is made of air stone, the rotating shaft 561 is hollow, and the pipeline of the gas dissolving component 57 extends to the inside of the rotating shaft 561. The surface of the air stone is loose and porous. When ultrasonic waves pass through, it can provide a place for gas to gather, easily forming cavitation nuclei, and then develop into bubbles. Under the centrifugal force of the rotating stirring blade 562, it is spread to the entire sewage, thereby obtaining a better sewage treatment effect, injecting air into the rotating shaft 561, and then injecting it into the stirring blade 562, so that the air can be better dissolved 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 passes 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. The end of the rotating shaft 561 located outside the cylinder 3 is fixedly connected to the motor 564, and the output end of the motor 564 is fixedly connected to the rotating shaft 561. The surface of the motor 564 is fixedly connected to a fixing frame 565, and the fixing frame 565 is fixedly installed on the side of the end cover 4 away from the cylinder 3. When the motor 564 is started, 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.

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

[0056] One end of the air dissolving tube 571 away from the end cover 4 is fixedly connected to the pump body 573, and the side of the pump body 573 away from the air dissolving tube 571 is fixedly connected to the air inlet pipe 574. The surface of the pump body 573 is fixedly connected to the mounting plate 575, and the side of the mounting plate 575 away from the pump body 573 is fixedly connected to the side of the bottom plate 1 away from the cylinder 3. When the pump body 573 is started, the pump body 573 drives the air to pass through the air inlet pipe 574, the pump body 573, the air dissolving tube 571, and the air dissolving ring 572 in sequence, and finally injected 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: include: A base plate (1), the bottom of the base plate (1) being fixedly connected to a support leg (2), a side of the base plate (1) away from the support leg (2) being fixedly connected to a cylinder (3), and a side of the cylinder (3) away from the base plate (1) being fixedly connected to an end cover (4); A processing mechanism (5), wherein the processing mechanism (5) is fixedly connected to the surface of the cylinder (3); Wherein, the processing mechanism (5) comprises: A pole plate (54), wherein the pole plate (54) and the cylinder (3) are centrally symmetrically arranged, and the sides of the two pole plates (54) close to each other are fixedly connected to the outer side of the cylinder (3), and the side of the pole plate (54) close to the cylinder (3) is fixedly connected to a pole column (55), and a plurality of pole columns (55) are evenly distributed on the surface of the pole plate (54), and one end of the pole column (55) away from the pole plate (54) extends to the inside of the cylinder (3), and the surface of the pole column (55) is fixedly connected to the inner side of the cylinder (3); The two sides of the two electrode plates (54) that are away from each other are respectively connected to a positive electrode wire and a negative electrode wire of an external power source; A stirring assembly (56), wherein the stirring assembly (56) is arranged inside the cylinder (3), and the surface of the stirring assembly (56) is fixedly connected to the inner side surface of the end cover (4); An air dissolving component (57), wherein the air dissolving component (57) is fixedly connected to a side of the bottom plate (1) away from the cylinder (3), and a pipeline of the air dissolving component (57) extends into the interior of the cylinder (3); An aeration component (58), wherein the aeration component (58) is arranged at the bottom of the cylinder (3), and the surface of the aeration component (58) is fixedly connected to the inner side surface of the cylinder (3).

2. A low-temperature plasma organic wastewater treatment device according to claim 1, characterized in that: A loading pipe (51) is fixedly connected to the surface of the cylinder (3), a feeding pipe (52) is arranged inside the cylinder (3), the end of the feeding pipe (52) away from the end cover (4) passes through the bottom plate (1), and the outer side surface of the feeding pipe (52) is fixedly connected to the inner side surface of the bottom plate (1), the outer side surface of the feeding pipe (52) is fixedly connected to a connecting plate (53), and the surface of the connecting plate (53) is fixedly connected to the side of the bottom plate (1) away from the cylinder (3).

3. A low-temperature plasma organic wastewater treatment device according to claim 2, characterized in that: The aeration assembly (58) comprises a cone plate (581), the outer side surface of the cone plate (581) is fixedly connected to the inner side surface of the cylinder (3), the inner side surface of the cone plate (581) is fixedly connected to the outer side surface of the discharge pipe (52), a coupling block (582) is arranged at the interval between the cone plate (581) and the bottom plate (1), the end of the coupling block (582) away from the bottom plate (1) passes through the cone plate (581), the surface of the coupling block (582) is fixedly connected to the inner side surface of the cone plate (581), the side of the coupling block (582) close to the bottom plate (1) is fixedly connected to an ultrasonic generator (583), and the side of the ultrasonic generator (583) away from the coupling block (582) is fixedly connected to the side of the bottom plate (1) away from the supporting leg (2).

4. A low-temperature plasma organic wastewater treatment device according to claim 3, characterized in that: A plurality of coupling blocks (582) are arranged at the interval between the bottom plate (1) and the cone plate (581), and the plurality of coupling blocks (582) are all 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). A side of the coupling block (582) away from the ultrasonic generator (583) passes 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. A low-temperature plasma organic wastewater treatment device according to claim 4, characterized in that: The stirring assembly (56) comprises a rotating shaft (561), wherein the rotating shaft (561) is arranged inside the cylinder (3), and a stirring blade (562) is fixedly connected to the surface of the rotating shaft (561), wherein the stirring blade (562) is arranged as a spiral part, and a plurality of stirring blades (562) are evenly distributed along the circumference of the rotating shaft (561).

6. A low-temperature plasma organic wastewater treatment device according to claim 5, characterized in that: A groove body (563) is provided on the surface of the stirring blade (562). The groove body (563) is provided 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).

7. A low-temperature plasma organic wastewater treatment device according to claim 6, characterized in that: The stirring blade (562) is made of an air stone, the rotating shaft (561) is hollow, and the pipeline of the air dissolving component (57) extends to the inside of the rotating shaft (561).

8. A low-temperature plasma organic wastewater treatment device according to claim 7, characterized in that: One end of the rotating shaft (561) away from the bottom plate (1) passes 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 (3) is fixedly connected to a motor (564); 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 mounted on a side of the end cover (4) away from the cylinder (3).

9. A low-temperature plasma organic wastewater treatment device according to claim 8, characterized in that: The gas dissolving component (57) comprises a gas dissolving tube (571), the gas dissolving tube (571) is arranged inside the rotating shaft (561), and the outer side surface of the gas dissolving tube (571) is fixedly connected to the inner side surface of the rotating shaft (561), the end of the gas dissolving tube (571) away from the end cover (4) passes through the feed tube (52), and the outer side surface of the feed tube (52) is fixedly connected to the outer side surface of the gas dissolving tube (571), and the outer side surface of the rotating shaft (561) is fixedly connected to the gas dissolving ring (572). ), the side of the air dissolving ring (572) away from the stirring blade (562) passes through the rotating shaft (561), the surface of the air dissolving ring (572) is fixedly connected to the inner side surface of the rotating shaft (561), the side of the air dissolving ring (572) away from the rotating shaft (561) extends to the inside of the stirring blade (562), the surface of the air dissolving ring (572) is fixedly connected to the inner side surface of the stirring blade (562), and the inner cavity of the air dissolving ring (572) is connected to the air dissolving tube (571) and the stirring blade (562).

10. A low-temperature plasma organic wastewater treatment device according to claim 9, characterized in that: The end of the air dissolving tube (571) away from the end cover (4) is fixedly connected to the pump body (573), the side of the pump body (573) away from the air dissolving tube (571) is fixedly connected to the air inlet pipe (574), the surface of the pump body (573) is fixedly connected to a mounting plate (575), and the side of the mounting plate (575) away from the pump body (573) is fixedly connected to the side of the bottom plate (1) away from the cylinder (3).

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