CN110404394A - Ultraviolet catalytic oxidation-Fenton high efficiency composition organic waste gas treatment device and method - Google Patents

Abstract

The present invention relates to VOCs treatment technical field more particularly to a kind of ultraviolet catalytic oxidation-Fenton high efficiency composition organic waste gas treatment device and methods.The processing unit includes the tower body of hollow structure and the exhaust gas inlet and outlet that are connected to tower body；Washing, purifying area, dry section, photochemical catalytic oxidation area are successively arranged inside tower body from bottom to top；Washing, purifying area is equipped with liquid storage area；Retaining wall, which is fixed on tower body bottom, divides into clear water dedusting washing, purifying area and Fenton processing washing purifying area for washing, purifying；Photochemical catalytic oxidation area includes UV photocatalysis treatment area and plasma treatment area.The processing method is that organic exhaust gas to be processed is sent into the washing, purifying area inside tower body through exhaust gas inlet, is successively discharged behind dry section, photochemical catalytic oxidation area by outlet after secondary spraying.Processing unit and method of the invention can realize the multistep treatment to organic exhaust gas, reach deodorization well, purification harmless discharge effect, while having efficient sterilization.

Description

Ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device and method

technical field

The invention relates to the technical field of organic waste gas treatment, in particular to an ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device and method.

Background technique

With the aggravation of environmental problems, people pay more and more attention to environmental protection, and reduce or reduce the pollution to the environment in various ways. In the process of industrial and agricultural production, such as painting, printing, metal degreasing and degreasing, adhesives and other production occasions, volatile organic compounds (VOCs) are inevitably emitted, which pollute the environment and endanger human health. An important source, VOCs are always polluting the air.

In order to maintain the air quality in the environment, a variety of technologies have been studied at home and abroad for the treatment of VOCs, among which the more common technologies are: combustion method, condensation method, adsorption method, absorption method, biological method, plasma, UV photocatalysis, catalytic oxidation Wait. However, most of the above-mentioned treatment technologies have the problems of low treatment efficiency, high use cost, large amount of residual volatile organic compounds, and some even produce secondary pollution. air quality requirements.

SUMMARY OF THE INVENTION

The invention mainly solves the technical problems existing in the prior art, thereby providing an ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device and method with high purification efficiency, good safety, good treatment effect and corrosion resistance.

The present invention adopts the following technical scheme to realize:

An ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device, comprising a tower body with a hollow structure and a waste gas inlet and outlet communicated with the tower body;

The inside of the tower body is provided with a washing purification zone, a filtering zone and a photocatalytic oxidation zone in sequence from bottom to top;

The lower part of the washing and purification area is provided with a liquid storage area; the baffle wall is fixed at the bottom of the tower body to divide the liquid storage area into a clean water storage area and a Fenton reagent liquid storage area; the tops of the washing and purification area located on both sides of the baffle wall are respectively provided with a second liquid storage area. The first spray layer and the second spray layer, the baffle wall extends upward to the first spray layer, and the washing and purification area is divided into the clean water dust removal washing and purification area and the Fenton treatment washing purification area, and the upper side of the baffle wall faces the clean water dust removal washing and purification area. Bending arrangement; baffles are arranged on the inner wall of the tower between the washing and purifying area and the filtering area, and form the exhaust gas outlet of the clean water dust-removing washing and purifying area with the baffle wall;

The photocatalytic oxidation area includes a UV photocatalytic treatment area and a plasma treatment area, the UV photocatalytic treatment area is located on the upper side of the filter area, and the plasma treatment area is connected to the outlet.

Further, Fenton reagent is contained in the cavity of the Fenton reagent storage area, and is provided with an acidic hydrogen peroxide inlet; the second spray layer is connected to the Fenton reagent storage area through a pressure pump; the acidic hydrogen peroxide inlet is connected to the hydrogen peroxide dosing device through a pressure pump. connect.

Further, the lower part of the clean water dust removal, washing and purification area is provided with a filling layer filled with porous structural materials, and the filling layer is fixed on the left and right side walls of the clean water dust removal, washing and purification area between the exhaust gas inlet and the clean water liquid storage area.

Further, the filter area includes a filter layer and a water-vapor separation layer arranged from bottom to top; the filter layer has a honeycomb structure; It is an inclined L-shape and is arranged between the upper water baffle and the lower water baffle.

Further, the plasma treatment area includes multiple groups of high-energy ion tubes, the UV photocatalytic treatment area includes multiple groups of ultraviolet lamps and photocatalytic plates, and the multiple groups of high-energy ion tubes, ultraviolet lamps and photocatalytic plates are arranged in an array up and down, and multiple groups of ultraviolet lamps The tubes and the photocatalytic plates are distributed in a spaced arrangement.

Further, the photocatalytic plate is made of TiO ₂ material.

Further, the Fenton treatment washing and purification zone is larger than the radial section of the clean water washing and purification zone.

Further, the high-efficiency composite organic waste gas treatment device further includes an air induction device, which is arranged on the upper part of the plasma treatment area; the air induction device includes an induced draft fan, and the outlet is connected to the plasma treatment area through the induced draft fan.

A treatment method based on the above-mentioned ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device is as follows:

1) The organic waste gas to be treated is transported to the washing and purification area inside the tower body through the waste gas inlet, and the clean water is sent to the clean water storage area at the same time, and the Fenton reagent is sent to the Fenton reagent storage area, and the pressure pump is turned on. The acidic hydrogen peroxide in the dosing device is continuously put into the Fenton reagent storage area through the acidic hydrogen peroxide inlet, and then the pressure pump is turned on to make the clean water enter the first spray layer and the Fenton mixed solution to enter the second spray layer for spraying out.

2) Turn on multiple sets of UV lamps, and the organic waste gas treated in the washing and purification zone enters the UV photocatalytic treatment zone after being filtered in the filter zone and separated from water and gas.

3) Open multiple groups of high-energy ion tubes, and the organic waste gas treated in the UV photocatalytic treatment area enters the plasma treatment area.

4) The organic waste gas treated by the plasma treatment zone is discharged from the outlet.

Further, the pH value of the continuous acidic hydrogen peroxide is 3.0, and it is continuously put into the Fenton reagent liquid storage area so that the mass concentration of the hydrogen peroxide is 0.1% to 1.5%.

The beneficial effects of the present invention are: adopting the ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device and method described in the present invention, adopting the combination of ultraviolet photocatalytic oxidation, plasma and Fenton technology to degrade the refractory organic pollutants in the environment It has higher oxidation and decomposition performance than the single technical function; through the multiple settings of the washing purification zone, filter zone and photocatalytic oxidation zone inside the tower body, the multi-stage treatment of organic waste gas is realized, and the deodorization, purification and harmlessness are achieved. At the same time, it has high-efficiency disinfection and sterilization effect; through the secondary spraying of organic waste gas, the dust in the waste gas can be washed very well, and through the capture of the filling layer and the filtering effect of the filter area, the dust in the waste gas can be washed well. It has a good removal effect on the dust in the exhaust gas, the dust achieves ultra-low emission, and does not affect the subsequent treatment of the organic waste gas; it is safe and reliable, and occupies a small area.

Description of drawings

Fig. 1 is the structural representation I of a kind of ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device of the present invention.

2 is a schematic structural diagram II of an ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device of the present invention.

FIG. 3 is a working flow chart of an ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment method of the present invention.

In the picture:

1. Tower body; 2. Exhaust gas inlet; 3. Outlet; 5. Retaining wall; 6. Baffle plate; 7. UV photocatalytic treatment zone; 8. Plasma treatment zone; 9. Filling layer; 10. Filter layer; 11 41, clear water storage area; 42, Fenton reagent storage area; 43, first spray layer; 44, second spray layer; 71, ultraviolet lamp tube; 72, photocatalytic plate; 81 , High-energy ion tube; 421, hydrogen peroxide dosing device.

Detailed ways

In order to make the objectives and technical solutions of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings.

As shown in Figure 1 ~ Figure 2, a kind of ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device of the present invention comprises a tower body 1 with a hollow structure and a waste gas inlet 2 and an outlet 3 communicated with the tower body 1;

The interior of the tower body 1 is sequentially provided with a washing purification zone, a filtering zone and a photocatalytic oxidation zone from bottom to top.

The washing and purification area is provided with a liquid storage area; the baffle wall 5 is fixed at the bottom of the tower body 1 to divide the liquid storage area into a clear water storage area 41 and a Fenton reagent liquid storage area 42; There are a first spray layer 43 and a second spray layer 44, the blocking wall 5 extends upward to the first spray layer 43, and the washing and purification area is divided into a clean water dust removal washing purification area and a Fenton treatment washing purification area. The lateral clean water dedusting, washing and purifying area is bent and arranged; the baffle 6 is arranged on the inner wall of the tower body 1 between the washing and purifying area and the filtering area, and forms the exhaust gas outlet of the clean water dedusting, washing and purifying area with the baffle wall 5.

The organic waste gas first enters the clean water dust removal, washing and purification area for the first spray, and then enters the Fenton treatment, washing and purification area through the exhaust gas outlet for the second spray reaction, which increases the flow path of the organic waste gas in the tower body 1 and realizes the organic waste gas. The secondary spraying can not only remove the dust in the organic waste gas to the maximum extent, but also realize the Fenton pretreatment oxidation reaction of the organic waste gas in the Fenton treatment, washing and purification area.

The upper side of the retaining wall 5 is bent to the clean water dust removal, washing and purification area to prevent the organic waste gas from passing through the clean water dust removal, washing and purification area too quickly, and to promote the organic waste gas in the clean water dust removal, washing and purification area to be fully absorbed and rinsed into the Fenton treatment and washing. purification area.

Preferably, the Fenton treatment washing and purification zone is larger than the radial cross-section of the clean water washing and purification zone. Due to the fast flow rate of the flue gas that has just entered, by increasing the radial cross-section of the Fenton treatment washing and purification zone, the organic waste gas can be fully processed for the second time. Spraying ensures sufficient Fenton treatment reaction space, and the rational setting of the Fenton treatment washing and purification area and the clean water washing and purification area can reduce the building height and floor space of the tower body 1 to a certain extent.

The baffle 6 is inclined downward, and the included angle range with the inner wall of the tower body 1 is 60°≤α<90°, so as to prevent the spray liquid of the second spray layer 44 from accumulating on the baffle 6, so that the The spray liquid of the second spray layer 44 is discharged along the baffle 6 to the Fenton treatment, washing and purification area.

The clean water storage area 41 is arranged below the tower body 1, and a sewage outlet is provided in the clean water storage area 41 for clean water sewage discharge, and the clean water storage area 41 is regularly cleaned.

A filling layer 9 filled with porous structural materials is arranged at the lower part of the clean water dust removal, washing and purification area, and the filling layer 9 is arranged between the exhaust gas inlet 2 and the clean water liquid storage area 41 .

The filling layer 9 may further include a fixing frame, the fixing frame is arranged at the lower part of the clean water dedusting, washing and purifying area and adjacent to the liquid storage area, and the fixing frame is filled with porous structural material to form the filling layer 9 . Porous structural materials can be activated carbon, alumina, silica gel, artificial zeolite, etc., which have large specific surface area, porous structure, and stable chemical properties. When the organic waste gas flows through the filling layer 9 , the particles are trapped by the porous structure material, thereby preventing the accumulation of a large number of particles in the clean water storage area 41 too quickly, and reducing the risk of clogging of the first spray layer 43 .

The Fenton reagent storage area 42 is provided below the tower body 1, the Fenton reagent storage area 42 contains Fenton reagent in the inner cavity, and is provided with an acidic hydrogen peroxide inlet; the second spray layer 44 communicates with the Fenton reagent storage area through a pressure pump 42 is connected; the acidic hydrogen peroxide inlet is connected to the hydrogen peroxide dosing device 421 through a pressure pump. The inner cavity of the Fenton reagent storage area 42 contains Fenton reagents, such as ferric sulfate, etc. The pressure pump is turned on to add acidic hydrogen peroxide to the hydrogen peroxide dosing device 421, and the Fenton reagent storage area 42 is continuously fed into the Fenton reagent storage area 42 through the inlet of the acidic hydrogen peroxide. The acidic hydrogen peroxide refers to the acidic hydrogen peroxide added with inorganic acid to make the hydrogen peroxide have a certain acidity, such as hydrogen peroxide added with sulfuric acid or nitric acid to maintain the mass concentration of the hydrogen peroxide in the Fenton reagent in the Fenton treatment, washing and purification zone within a certain range; Fenton reagent The Fenton mixed solution in the liquid storage area 42 is sprayed out through the second spray layer 44, so that after the organic waste gas to be treated is fully contacted with the Fenton mixed solution sprayed by the spray device, a reaction occurs, and the organic waste gas is sprayed. The macromolecules of organic matter are oxidized into small molecules, and the organic waste gas continues to flow to the filter area.

In order to prevent a large amount of precipitates deposited in the reaction from entering the Fenton reagent storage area 42 and affecting the Fenton treatment capacity of the Fenton treatment, washing and purification area, the lower part of the Fenton treatment, washing and purification area can be provided with the same filling layer 9 as the clean water dust removal washing and purification area. 9 is arranged at a position adjacent to the Fenton reagent storage area 42; the Fenton reagent storage area 42 can also be divided into a Fenton residual liquid storage area and a Fenton reaction liquid storage area up and down, and the Fenton residual liquid storage area is used to store the Fenton reaction. After the sediment and residual liquid, a sewage outlet is provided for the sewage of the Fenton reaction residual liquid, and the Fenton residual liquid storage area is regularly cleaned; the Fenton reaction liquid storage area is filled with Fenton reagent, and is equipped with acidic hydrogen peroxide. The second spray layer 44 is connected to the Fenton reagent liquid storage area 42 through a pressure pump; the acidic hydrogen peroxide inlet is connected to the hydrogen peroxide dosing device 421 through a pressure pump.

The filter area includes a filter layer 10 and a water-vapor separation layer 11 arranged from bottom to top; the filter layer 10 has a honeycomb structure; The plate is in an oblique L shape and is arranged between the upper water baffle and the lower water baffle.

The organic waste gas is rinsed in the washing and purification zone, and then passes through the filter layer 10, which can effectively block and separate the dust in the organic waste gas. After the organic waste gas is sprayed, it contains a certain amount of water, and the water in it will have a certain impact on the subsequent treatment of the volatile organic gas, and also have a certain pollution and corrosion effect on the equipment. By arranging the water-gas separation layer 11 for separating waste gas and water, the upper and lower water blocking plates of the water-gas separation layer 11 can block and reduce the speed of the organic waste gas. The middle water blocking plate is provided with several The inclined L-shaped baffle with a certain interval increases the movement path of the organic waste gas in the middle water baffle, and the organic waste gas flows in the middle water baffle. It is convenient to remove moisture from organic waste gas. And because the organic waste gas generally has a high temperature, the temperature of the middle water baffle is relatively low, the middle water baffle and the water vapor exchange heat, the water is cooled and condensed into water droplets that drip under the action of gravity, while the organic waste gas is discharged from the bottom. The upward flow separates the moisture from the organic waste gas and reduces the temperature of the organic waste gas.

The photocatalytic oxidation zone includes a UV photocatalytic processing zone 7 and a plasma processing zone 8 , the UV photocatalytic processing zone 7 is located on the upper side of the filtering zone, and the plasma processing zone 8 is connected to the outlet 3 .

The plasma treatment area 8 includes multiple groups of high-energy ion tubes 81, and the UV photocatalytic treatment area 7 includes multiple groups of ultraviolet lamps 71 and photocatalytic plates 72. The multiple groups of high-energy ion tubes 81, ultraviolet lamps 71, and photocatalytic plates 72 are distributed up and down in an array, respectively. , and a plurality of groups of ultraviolet lamps 71 and photocatalyst plates 72 are arranged in a spaced distribution manner.

The photocatalytic plate 72 is made of TiO ₂ material.

In the photo-oxygen catalysis process, the photocatalytic plate 72 installed in the UV photocatalytic treatment zone 7 is used to further decompose the organic waste gas that has not been treated by the Fenton treatment, washing and purification zone, so as to ensure that the discharged gas is pollution-free. produce secondary pollution. At the same time, the ultraviolet lamp 71 can also decompose the molecular bonds of bacteria in the malodorous gas, and destroy the nucleic acid (DNA) of the bacteria to enhance deodorization and kill bacteria.

The multiple groups of high-energy ion tubes 81 installed in the plasma treatment area 8 emit ion beams, which decompose the oxygen molecules in the air to generate free oxygen, that is, active oxygen. Because the positive and negative electrons carried by the free oxygen are unbalanced, they need to be combined with the molecules to generate ozone. . Ozone has a strong oxidizing effect on organic matter, which can further consolidate the treatment effect of organic waste gas, and continue to decompose and oxidize organic waste gas that has not been completely treated in UV photocatalytic treatment zone 7, so that it is finally degraded and converted into low molecular compounds, water and carbon dioxide, and then discharged from the tower body 1 through the outlet 3 to achieve the purpose of harmless treatment and environmental protection.

In practical application, an oxygen supply device can be provided in the plasma processing area 8 as required to supply oxygen to the plasma processing area 8 in time to ensure the decomposition and oxidation capacity of the plasma processing area 8 .

In addition, as an improvement of the present invention, the exhaust gas inlet 2 can be provided with an induced draft fan, and the induced draft fan is turned on to send the organic waste gas to be treated into the tower body 1 through the exhaust gas inlet 2 . In addition, an air induction device can also be arranged on the upper part of the plasma treatment zone 8 for discharging the treated organic waste gas. The induced draft device includes an induced draft fan, and the outlet 3 is connected to the plasma treatment area 8 through the induced draft fan, thereby effectively ensuring the flow direction of the organic waste gas.

A control system can be arranged outside the tower body 1, the control system is respectively connected with each component in the tower body 1, and the control system is also provided with a display device. The display device includes indicator lights, a display screen and control buttons. Under normal circumstances, the staff only needs to operate the control button and set parameters for the operation of the control system through the display screen, so as to ensure the normal operation of the entire device, and the indicator light is in the normal display state. When the device fails, the indicator light shows a flashing alarm state, thereby reminding the staff to carry out inspection and maintenance, and improving the purification efficiency and safety of the device.

Based on the above improvements, an air detector can be provided at the outlet 3, and the air detector is connected to the control system to control and detect the outlet concentration of organic waste gas, thereby realizing on-line monitoring of the treatment effect of organic waste gas. Using the above scheme, the VOCs emission concentration for VOCs treatment is lower than 20mg/m ³ , which meets the emission standard.

As shown in Figure 3, a treatment method based on the above-mentioned ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device is as follows:

1) The organic waste gas to be treated is transported to the washing and purification area inside the tower body 1 through the waste gas inlet 2, and the clean water is sent to the clean water storage area 41 at the same time, and the Fenton reagent is sent to the Fenton reagent storage area 42. Turn on The pressure pump continuously injects the acidic hydrogen peroxide in the hydrogen peroxide dosing device 421 into the Fenton reagent storage area 42 through the acidic hydrogen peroxide inlet, and then turns on the pressure pump to make clear water enter the first spray layer 43 and the Fenton mixed solution to enter the second spray. Layer 44 is sprayed out.

2) Turn on multiple sets of ultraviolet lamps 71, and the organic waste gas treated in the washing and purification zone enters the UV photocatalytic treatment zone 7 after being filtered in the filter zone and separated from water and gas.

3) Turn on multiple groups of high-energy ion tubes 81 , and the organic waste gas treated in the UV photocatalytic treatment zone 7 enters the plasma treatment zone 8 .

4) The organic waste gas treated by the plasma treatment zone 8 is discharged from the outlet 3 .

The pH value of the acidic hydrogen peroxide is 3.0, and it is continuously put into the Fenton reagent storage area 42 so that the mass concentration of the hydrogen peroxide is 0.1% to 1.5%.

In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the orientations or positional relationships shown in the drawings, only In order to facilitate the description of the present invention and simplify the description, it is not indicated or implied that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "arranged", "installed", "connected", "connected" and "connected" should be understood in a broad sense. It can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The above are only the preferred embodiments of the present invention, and are not limited to the present invention. All equivalent modifications, equivalent replacements and improvements made within the spirit and principle of the present invention should be included in the patent of the present invention. covered.

Claims (10)

1. An ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device, characterized in that it comprises a tower body (1) with a hollow structure and a waste gas inlet (2) and an outlet (3) communicated with the tower body (1); The inside of the tower body (1) is sequentially provided with a washing purification zone, a filtering zone and a photocatalytic oxidation zone from bottom to top; The lower part of the washing and purification area is provided with a liquid storage area; the retaining wall (5) is fixed on the bottom of the tower body (1) to divide the liquid storage area into a clean water storage area (41) and a Fenton reagent liquid storage area (42); in the washing and purification area A first spray layer (43) and a second spray layer (44) are respectively provided at the tops of the two sides of the baffle wall (5), and the baffle wall (5) extends upward to the first spray layer (43), so that the The washing and purification area is divided into a clean water dust removal washing and purification area and a Fenton treatment washing purification area. The upper side of the baffle wall (5) is bent and arranged towards the clean water dust removal, washing and purification area; the baffle plate (6) is arranged between the washing and purification area and the filtering area. On the inner wall of the tower body (1), and the retaining wall (5) form the exhaust gas outlet of the clean water, dust removal, washing and purification area; The photocatalytic oxidation zone includes a UV photocatalytic treatment zone (7) and a plasma treatment zone (8). The UV photocatalytic treatment zone (7) is located on the upper side of the filter zone, and the plasma treatment zone (8) is connected to the outlet (3). 2. The ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device according to claim 1, wherein the Fenton reagent is contained in the inner cavity of the Fenton reagent liquid storage area (42), and an acidic hydrogen peroxide inlet is provided; The second spray layer (44) is connected to the Fenton reagent liquid storage area (42) through a pressure pump; the acidic hydrogen peroxide inlet is connected to the hydrogen peroxide dosing device (421) through a pressure pump. 3. The ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device according to claim 1, characterized in that, a filling layer (9) filled with porous structural materials is provided in the lower part of the clean water dust removal, washing and purification zone, and the filling layer (9) ) is fixed on the left and right side walls of the clean water dust removal, washing and purification area between the exhaust gas inlet (2) and the clean water storage area (41). 4. The ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device according to claim 1, characterized in that the filter area comprises a filter layer (10) and a water-gas separation layer (11) arranged from bottom to top; the filter layer (10) It has a honeycomb structure; the water-air separation layer (11) includes an upper water baffle, a middle water baffle and a lower water baffle, and the middle water baffle is an inclined L-shaped and is arranged on the upper water baffle and the lower water baffle. between the flaps. 5. The ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device according to claim 1, wherein the plasma treatment area (8) comprises multiple groups of high-energy ion tubes (81), and the UV photocatalytic treatment area (7) Including multiple sets of ultraviolet lamps (71) and photocatalytic plates (72), multiple sets of high-energy ion tubes (81), ultraviolet lamps (71) and photocatalytic plates (72) are arranged up and down in an array, and multiple sets of ultraviolet lamps (71) ) and the photocatalytic plates (72) are distributed in a spaced manner. 6 . The ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device according to claim 5 , wherein the photocatalytic plate ( 72 ) is made of TiO ₂ material. 7 . 7 . The ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device according to claim 1 , wherein the Fenton treatment washing and purification zone is larger than the radial cross-section of the clean water washing and purification zone. 8 . 8. The ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device according to claim 1, characterized in that, the high-efficiency composite organic waste gas treatment device further comprises an air induction device, which is arranged in the upper part of the plasma treatment zone (8); The induced draft device includes an induced draft fan, and the outlet (3) is connected to the plasma treatment area (8) through the induced draft fan. 9. A treatment method based on the ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device according to any one of claims 1 to 8, wherein the method is as follows: 1) The organic waste gas to be treated is transported to the washing and purification area inside the tower body (1) through the waste gas inlet (2), and the clean water is sent to the clean water storage area (41) at the same time, and the Fenton reagent is sent to the Fenton reagent storage area. In the liquid area (42), the pressure pump is turned on to continuously inject the acidic hydrogen peroxide in the hydrogen peroxide dosing device (421) into the Fenton reagent liquid storage area (42) through the acid hydrogen peroxide inlet, and then the pressure pump is turned on to make clean water enter the first spray layer (43) and spray the Fenton mixed solution into the second spray layer (44); 2) Turn on multiple sets of ultraviolet lamps (71), and the organic waste gas processed in the washing and purification zone enters the UV photocatalytic treatment zone (7) after being filtered in the filter zone and separated from water and gas; 3) Open multiple groups of high-energy ion tubes (81), and the organic waste gas treated in the UV photocatalytic treatment zone (7) enters the plasma treatment zone (8); 4) The organic waste gas treated by the plasma treatment zone (8) is discharged from the outlet (3). 10. A treatment method for the ultraviolet photocatalytic oxidation-Fenton high-efficiency composite organic waste gas treatment device as claimed in claim 9, wherein the pH value of the acidic hydrogen peroxide is 3.0, and is continuously put into the Fenton reagent storage area ( 42) The mass concentration range of hydrogen peroxide is 0.1%~1.5%.