An experimental device for ozone-UV photocatalytic reaction based on microdroplet generation

Abstract

This invention belongs to the technical field of advanced oxidation process experimental equipment, and relates to an ozone-UV photocatalytic reaction experimental device based on microdroplet generation. It consists of a supply unit, a pretreatment unit, a microdroplet generation unit, and a microdroplet photocatalytic reaction unit connected sequentially via pipelines. The microdroplet generation unit includes a high-pressure water pump and a high-pressure atomizing nozzle connected sequentially. The outlet of the high-pressure atomizing nozzle leads to a water distributor, and the outlet of the reaction chamber is connected to a circulating return water port via a return pipeline, forming a circulation loop. This invention, through a reasonable structural design, constructs a dedicated experimental platform for studying the influence of factors such as microdroplet size, ozone addition method, light intensity, and number of cycles on the overall treatment effect. Based on existing technology, a microdroplet enhancement and control mechanism is introduced. The high-pressure atomizing nozzle atomizes the liquid to be treated into microdroplets, achieving efficient mass transfer and contact between pollutants, ozone, ultraviolet light, and the catalyst.

Description

Technical Field

[0001] This utility model belongs to the technical field of advanced oxidation process experimental equipment, specifically relating to an ozone-UV photocatalytic reaction experimental device based on microdroplet generation. Background Technology

[0002] With the development of industries such as chemical, printing and dyeing, and pharmaceutical, the treatment of recalcitrant organic wastewater has become a major challenge in the environmental field. Ozone catalytic oxidation and UV photocatalysis, as two common advanced oxidation technologies, rely on the generation of reactive substances such as hydroxyl radicals to degrade pollutants, but they still have certain limitations. Ozone oxidation technology suffers from low ozone utilization and slow reaction rates; while UV photocatalysis technology is limited by bottlenecks such as low light energy utilization efficiency and easy catalyst deactivation.

[0003] Existing technology discloses a UV photocatalytic oxidation waste gas treatment device, which uses a purification box, ultraviolet lamp, exhaust pipe, through hole, baffle, water outlet pipe, water inlet pipe, condenser pipe, filter screen, guide plate, air inlet pipe and rectangular guide hole in combination. Because the opening of the through hole is designed to be small, the waste gas located between the filter screen and the baffle passes through the through hole at a slower speed, which increases the residence time of the waste gas between the baffle and the filter screen, so that the circulating water inside the condenser pipe has enough time to absorb the heat contained in the waste gas. The prior art also discloses an ozone catalytic oxidation device for deep wastewater treatment, including a reaction tank, a hydrogen peroxide input component, and a circulating wastewater ozone projection component. The hydrogen peroxide input component includes an inlet pipe, an inlet pump, a hydrogen peroxide pipe, a hydrogen peroxide dosing pump, and a hydrogen peroxide mixer. The hydrogen peroxide mixer is sequentially connected to an inlet pipe consisting of the inlet pipe and the inlet pump, and a hydrogen peroxide pipe consisting of the hydrogen peroxide pipe and the hydrogen peroxide dosing pump. The hydrogen peroxide mixer is connected to the wastewater inlet. The circulating wastewater ozone projection component includes a circulation pipe, a circulation pump, and an ozone microbubble projector. The circulation pump is connected to the circulation inlet and the ozone microbubble projector, so that the circulating water and ozone enter the reaction tank together.

[0004] However, in the aforementioned existing technologies, the circulating water treatment reactor uses macroscopic water bodies as reaction units, resulting in low mass transfer efficiency between pollutants, ozone, catalysts, and ultraviolet light, thus limiting the reaction rate. Considering the enormous potential of "microdroplet technology" in significantly increasing the gas-liquid contact area and triggering unique interfacial effects, systematically integrating microdroplet technology into the ozone-photocatalytic coupling system would greatly improve efficiency. However, current research and engineering applications lack a dedicated experimental platform capable of effectively simulating and deeply studying the impact of various operating parameters, such as ozone addition methods, droplet size, and light intensity, on the overall treatment effect. Therefore, there is an urgent need to develop an ozone-UV photocatalytic reaction experimental device based on microdroplet generation to effectively solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an ozone-UV photocatalytic reaction experimental device based on microdroplet generation, in order to solve the problem of providing a visual experimental platform that can be used to study the synergistic mechanism of ozone and UV photocatalysis in a microdroplet environment.

[0006] The objective of this utility model is achieved through the following technical solution: An ozone-UV photocatalytic reaction experimental device based on microdroplet generation includes a supply unit 1, a pretreatment unit 2, a microdroplet generation unit 3, and a microdroplet photocatalytic reaction unit 4 connected in sequence through pipelines. The supply unit 1 includes a raw water tank 101 and an ozone generator 102 screwed to it. The raw water tank 101 is connected to a gas-liquid mixing pump 104 through a pipeline. The ozone generator 102 is connected to a dosing pump 103 and a gas-liquid mixing pump 104 in sequence through pipelines. The outlet of the gas-liquid mixing pump 104 is connected to the pretreatment unit 2 through a pipeline. The pretreatment unit 2 includes a vertical tank 201, with a first water inlet 202 and a circulating water return outlet 203 at the top, and an ozone microbubble inlet 204 and a pretreatment outlet 205 at the bottom. The pretreatment outlet 205 is equipped with a pretreatment outlet valve 206, and the pretreatment outlet 205 is connected to the microdroplet generation unit 3 through a pipeline. The microdroplet generation unit 3 includes a high-pressure water pump 301 and a high-pressure atomizing nozzle 302. The pretreatment outlet 205 is connected in sequence to the high-pressure water pump 301 and the high-pressure atomizing nozzle 302. The microdroplet generation unit 3 is connected to the microdroplet photocatalytic reaction unit 4 through a pipeline. The microdroplet photocatalytic reaction unit 4 includes a reaction chamber shell 401 with a visualization observation window 402. A water distributor 403 is installed on the top of the reaction chamber shell 401, a cylindrical photocatalytic component 404 is installed in the middle, a porous support plate 405 and a UV lamp group 406 installed on it are provided at the bottom, and a reaction chamber outlet 407 and a final outlet 408 are provided at the bottom of the chamber. The secondary gas supply path of the ozone generator 102 is sequentially connected to a first pressure gauge 105 and a gas booster pump 106. The gas booster pump 106 can pressurize the ozone gas to generate microbubbles and is connected to the ozone microbubble inlet 204. The outlet of the high-pressure atomizing nozzle 302 leads to the water distributor 403, and the water outlet 407 of the reaction chamber is connected to the circulating return water inlet 203 through the return pipe 5 to form a circulation loop.

[0007] Furthermore, the microdroplet generation unit 3 also includes a pressure regulating valve 303, a second pressure gauge 304, and a microdroplet distribution plate 305; The pressure regulating valve 303 and the second pressure gauge 304 are installed on the pipeline connecting the high-pressure water pump 301 and the high-pressure atomizing nozzle 302. The microdroplet distribution plate 305 is fixedly disposed below the high-pressure atomizing nozzle 302. The microdroplet distribution plate 305 is uniformly provided with a number of distribution holes, which can cut and reshape the original fog field generated by the high-pressure atomizing nozzle (302) so that the microdroplets are uniformly distributed when entering the photocatalytic reaction unit (4).

[0008] Furthermore, the microdroplet distribution plate 305 has an inverted conical structure, and its cone angle is adapted to the atomization angle of the high-pressure atomizing nozzle 302; the diameter of the distribution holes gradually decreases from top to bottom.

[0009] Furthermore, the vertical tank 201 is provided with an activated carbon filter layer 208, a quartz sand filter layer 209, a pebble support layer 210, and a heterogeneous catalyst layer 211 arranged sequentially from top to bottom inside.

[0010] Furthermore, the ozone microbubble inlet 204 is located at the bottom of the heterogeneous catalyst layer 211.

[0011] Furthermore, the filler of the heterogeneous catalyst layer 211 is activated carbon particles loaded with iron oxide.

[0012] Furthermore, the cylindrical photocatalytic component 404 is a honeycomb ceramic carrier with a nano-titanium dioxide film loaded on its surface.

[0013] Furthermore, sensor interfaces 6 are provided on the pipelines of the final outlet 408 and the pretreatment outlet 205.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, through a reasonable structural design, constructs a dedicated experimental platform for studying the effects of factors such as microdroplet size, ozone addition method, light intensity, and number of cycles on the overall treatment effect. In addition, based on the existing technology, a microdroplet size control mechanism is introduced, which atomizes the liquid to be treated into microdroplets smaller than 100μm through a high-pressure atomizing nozzle, creating a huge specific surface area and realizing efficient mass transfer and contact of pollutants, ozone, ultraviolet light, and catalyst. 2. This device realizes multi-path ozone dosing and precise control. Through two systems, a gas-liquid mixing pump and a gas booster pump, it realizes primary ozone dissolution dosing and secondary microbubble dosing. It can flexibly simulate different ozone dosing strategies and can be precisely measured and controlled through a gas flow control mechanism and a pressure gauge. 3. This invention constructs a visualized experimental system. The device adopts a modular design, with the pretreatment unit integrating filtration and catalysis, and the reaction unit integrating atomization and photocatalysis, with clearly defined functions; the design of the visualization observation window allows direct observation of the microdroplet morphology or connection to external measuring equipment; 4. This device can not only be used for the development of treatment processes for recalcitrant organic wastewater, but also serve as a teaching and research platform for basic research on advanced oxidation technologies, possessing significant practical value and broad application prospects. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure from the right side of an embodiment of the present utility model; Figure 2 This is a half-sectional view of the overall structure from the left side of an embodiment of the present invention; Figure 3 This is a schematic diagram of the overall structure from the left side of an embodiment of the present invention; Figure 4 This is a top view of an embodiment of the present utility model; Figure 5 This is a front view of an embodiment of the present utility model; Figure 6 This is a schematic diagram of the internal structure of the high-pressure atomization spraying of this utility model.

[0017] In the diagram: 1. Supply unit; 101. Raw water tank; 102. Ozone generator; 103. Dosing pump; 104. Gas-liquid mixing pump; 105. First pressure gauge; 106. Gas booster pump; 2. Pretreatment unit; 201. Vertical tank; 202. First inlet; 203. Circulation return inlet; 204. Ozone microbubble inlet; 205. Pretreatment outlet; 206. Pretreatment outlet valve; 208. Activated carbon filter layer; 209. Quartz sand filter layer; 210. Pebble support layer; 211. Non-uniform 3. Microdroplet generation unit; 301. High-pressure water pump; 302. High-pressure atomizing nozzle; 303. Pressure regulating valve; 304. Second pressure gauge; 305. Microdroplet distribution plate; 4. Microdroplet photocatalytic reaction unit; 401. Reaction chamber shell; 402. Visual observation window; 403. Water distributor; 404. Cylindrical photocatalytic component; 405. Porous support plate; 406. UV lamp assembly; 407. Reaction chamber outlet; 408. Final outlet; 5. Return pipeline; 6. Sensor interface. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings. The advantages and features of this utility model will become clearer with the description. However, it should be understood that the embodiments are merely exemplary and do not constitute a limitation on the scope of this utility model.

[0019] It should be noted that the terms "upper," "lower," "front," "rear," etc., in the claims and description of this application indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and should not be construed as meaning that the device or component referred to must have a specific orientation, or be constructed or operated in a specific orientation.

[0020] In this utility model, unless otherwise explicitly specified and limited, terms such as "fixed" and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] like Figures 1-5 As shown, this utility model provides an ozone-UV photocatalytic reaction experimental device based on microdroplet generation, which is used to study the synergistic mechanism of ozone and UV photocatalysis in the microdroplet environment, rather than for water treatment itself. The experimental device includes a supply unit 1, a pretreatment unit 2, a microdroplet generation unit 3 and a microdroplet photocatalytic reaction unit 4 connected in sequence by pipelines.

[0022] The supply unit 1 includes a raw water tank 101, which is connected to a gas-liquid mixing pump 104 via a pipeline. The supply unit 1 also includes an ozone generator 102 screwed to the raw water tank 101. The ozone generator 102 is connected in sequence to a dosing pump 103 and the gas-liquid mixing pump 104 via pipelines. The outlet of the gas-liquid mixing pump 104 is connected to the pretreatment unit 2 via a pipeline. The pretreatment unit 2 includes a vertical tank 201. The top of the vertical tank 201 has a first water inlet 202 and a circulating water return outlet 203. The bottom has an ozone microbubble inlet 204 and a pretreatment outlet 205. The pretreatment outlet 205 has a pretreatment outlet valve 206 and is connected to a microdroplet generation unit 3 via a pipeline. The microdroplet generation unit 3 is connected to a microdroplet photocatalytic reaction unit 4. The microdroplet photocatalytic reaction unit 4 includes a reaction chamber. The reaction chamber shell 401 has a visual observation window 402. A water distributor 403 is installed on the top of the reaction chamber shell 401, a cylindrical photocatalytic component 404 is installed in the middle, and a porous support plate 405 and a UV lamp group 406 installed on the porous support plate 405 are provided at the bottom. The bottom of the chamber has a reaction chamber outlet 407. The secondary dosing gas path of the ozone generator 102 is connected to a first pressure gauge 105 and a gas booster pump 106, and is pre-treated and connected to the ozone microbubble inlet 204. The microdroplet generation unit 3 includes a high-pressure water pump 301 and a high-pressure atomizing nozzle 302. The pre-treatment outlet 205 is connected to the high-pressure water pump 301 and the high-pressure atomizing nozzle 302 in sequence. The outlet of the high-pressure atomizing nozzle 302 leads to the water distributor 403. The reaction chamber outlet 407 is connected to the circulation return water port 203 through the return pipe 5 to form a circulation loop.

[0023] The microdroplet generation unit 3 further includes a pressure regulating valve 303, a second pressure gauge 304, and a microdroplet distribution plate 305. The pressure regulating valve 303 and the second pressure gauge 304 are located on the pipeline between the high-pressure water pump 301 and the high-pressure atomizing nozzle 302 to precisely control the atomization pressure. The microdroplet distribution plate 305 is fixedly positioned below the high-pressure atomizing nozzle 302, and has several evenly distributed holes to cut and reshape the original mist field generated by the high-pressure atomizing nozzle 302, making the microdroplets more evenly distributed when entering the photocatalytic reaction unit 4. The microdroplet distribution plate 305 has an inverted conical structure, and its cone angle matches the atomization angle of the high-pressure atomizing nozzle 302; the diameter of the distribution holes gradually decreases from top to bottom. Figure 6As shown, the high-pressure atomizing nozzle 302 and the micro-droplet distribution plate 305 are integrally mounted with an inverted double-cone shell. A nozzle seat is installed at the feed end of the shell, and the high-pressure atomizing nozzle 302 is mounted on the nozzle seat. A collection plate is installed at the discharge end of the shell, and multiple micro-droplet distribution plates 305 are sequentially installed in front of the collection plate. Preferably, the micro-droplet distribution plates 305 with smaller radii are welded to the shell. Inside the vertical tank 201, from top to bottom, are arranged an activated carbon filter layer 208, a quartz sand filter layer 209, a pebble support layer 210, and a heterogeneous catalyst layer 211. The filler of the heterogeneous catalyst layer 211 is activated carbon particles loaded with iron oxide. The ozone microbubble inlet 204 is located at the bottom of the heterogeneous catalyst layer 211. The cylindrical photocatalytic component 404 is a honeycomb ceramic carrier, and its surface is loaded with a nano-titanium dioxide film. Both the final outlet 408 and the pre-treatment outlet 205 are equipped with outlet valves and sensor interfaces 6.

[0024] It should also be noted that the supply unit 1 provides the materials required for the reaction, including the raw water tank 101, the ozone generator 102, and the dosing pump 103. The liquid to be treated in the raw water tank 101, the pH adjuster added by the dosing pump 103, and a portion of the ozone provided by the ozone generator 102 are fully mixed in the gas-liquid mixing pump 104 to form preliminary ozone dissolved water.

[0025] The pretreatment unit 2 is primarily a vertical tank 201. The mixed liquid enters the tank through the first inlet 202 at the top. The tank 201 is filled from top to bottom with an activated carbon filter layer 208, a quartz sand filter layer 209, a pebble support layer 210, and an activated carbon heterogeneous catalyst layer 211 loaded with iron oxide. This layer filters suspended solids, adsorbs some organic matter, and performs preliminary catalytic ozone oxidation. Simultaneously, another stream of ozone from the ozone generator 102 is injected through an ozone microbubble inlet 204 located at the bottom of the catalyst layer, forming microbubbles that fully contact the infiltrating water on the catalyst surface, deepening the oxidation reaction. A pretreatment outlet 205 with a valve is located at the bottom of the tank, and a sensor interface 6 is installed on the outlet pipe for easy monitoring of water quality during the reaction process.

[0026] The microdroplet generation unit 3 is the core innovation of this device. The liquid is pressurized by a high-pressure water pump 301, and the atomization pressure is stabilized at a predetermined value through precise control by a pressure regulating valve 303 and a second pressure gauge 304, enabling the high-pressure atomizing nozzle 302 to generate microdroplets smaller than 100 μm. To optimize the uniformity of the mist field, an inverted conical microdroplet distribution plate 305 is installed below the nozzle; its variable-diameter distribution holes can cut and reshape the original mist field.

[0027] The main body of the microdroplet photocatalytic reaction unit 4 is a cylindrical reaction chamber shell 401. After homogenization and premixing, the microdroplets are evenly distributed across the entire reaction cross-section via an octagonal water distributor 403 at the top. As the microdroplets slowly fall, they are fully exposed to the ultraviolet light field generated by the cylindrical photocatalytic component 404 and the UV lamp group 406 at the bottom, resulting in a highly efficient photocatalytic oxidation reaction. The reacted liquid flows out through the reaction chamber outlet 407 at the bottom and returns to the circulation return port 203 of the pretreatment unit via the return pipe 5, forming a circulation loop. The chamber is equipped with a visualization observation window 402 for easy observation and measurement.

[0028] To facilitate experimental monitoring, outlet valves and standardized sensor interfaces 6 are installed on the pipelines of the final outlet 408 and the pretreatment outlet 205.

[0029] Working principle and usage process of this utility model: 1. Preparation: Prepare the experimental water in the raw water tank 101 and check the status of each valve (the pretreatment outlet valve 206 and the final outlet valve 408 are closed to form a circulation loop).

[0030] 2. Start-up: Turn on ozone generator 102, dosing pump 103, adjust pH to 7-9, gas-liquid mixing pump 104, high-pressure water pump 301, and UV lamp group 406.

[0031] 3. Experimental Operation: The system enters a cyclic operation mode. Different ozone dosing paths can be selected according to the experimental design; the effects of different microdroplet sizes can be studied by adjusting the pressure regulating valve 303; sampling or online monitoring can be performed by opening the valve at specific time points through sensor interface 6.

[0032] 4. End and Cleaning: After the predetermined experimental cycle is reached, open the pretreatment outlet valve 206 and the final outlet valve to discharge the treated water sample, and clean the system in preparation for the next experiment.

[0033] This invention relates to an ozone-UV photocatalytic reaction experimental device based on microdroplet generation. It can be used to systematically investigate the effects of parameters such as microdroplet size, ozone addition mode, and number of cycles on pollutants, thereby providing accurate experimental data and theoretical basis for the scale-up and optimization of actual water treatment processes.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An experimental device for ozone-UV photocatalytic reaction based on microdroplet generation, characterized in that: It includes a supply unit (1), a pretreatment unit (2), a microdroplet generation unit (3), and a microdroplet photocatalytic reaction unit (4) connected in sequence through pipelines. The supply unit (1) includes a raw water tank (101) and an ozone generator (102) screwed to it. The raw water tank (101) is connected to a gas-liquid mixing pump (104) through a pipeline. The ozone generator (102) is connected to a dosing pump (103) and a gas-liquid mixing pump (104) in sequence through pipelines. The outlet of the gas-liquid mixing pump (104) is connected to the pretreatment unit (2) through a pipeline. The pretreatment unit (2) includes a vertical tank (201), with a first water inlet (202) and a circulating water return outlet (203) at the top, and an ozone microbubble inlet (204) and a pretreatment outlet (205) at the bottom. The pretreatment outlet (205) is equipped with a pretreatment outlet valve (206), and the pretreatment outlet (205) is connected to the microdroplet generation unit (3) through a pipeline. The microdroplet generation unit (3) includes a high-pressure water pump (301) and a high-pressure atomizing nozzle (302). The pretreatment outlet (205) is connected to the high-pressure water pump (301) and the high-pressure atomizing nozzle (302) in sequence. The microdroplet generation unit (3) is connected to the microdroplet photocatalytic reaction unit (4) through a pipeline. The microdroplet photocatalytic reaction unit (4) includes a reaction chamber shell (401) with a visualization observation window (402) on it. A water distributor (403) is installed on the top of the reaction chamber shell (401), a cylindrical photocatalytic component (404) is installed in the middle, and a porous support plate (405) and a UV lamp assembly (406) are installed on the bottom. The bottom of the chamber has a reaction chamber outlet (407) and a final outlet (408). The secondary gas supply path of the ozone generator (102) is connected in sequence to a first pressure gauge (105) and a gas booster pump (106). The gas booster pump (106) can pressurize the ozone gas to generate microbubbles and is connected to the ozone microbubble inlet (204). The outlet of the high-pressure atomizing nozzle (302) leads to the water distributor (403), and the outlet of the reaction chamber (407) is connected to the circulating return water inlet (203) through the return pipe (5) to form a circulation loop.

2. The ozone-UV photocatalytic reaction experimental device based on microdroplet generation according to claim 1, characterized in that: The microdroplet generation unit (3) also includes a pressure regulating valve (303), a second pressure gauge (304), and a microdroplet distribution plate (305). The pressure regulating valve (303) and the second pressure gauge (304) are installed on the pipeline connecting the high-pressure water pump (301) and the high-pressure atomizing nozzle (302); The microdroplet distribution plate (305) is fixedly disposed below the high-pressure atomizing nozzle (302). The microdroplet distribution plate (305) is uniformly provided with a number of distribution holes, which can cut and reshape the original fog field generated by the high-pressure atomizing nozzle (302) so that the microdroplets are uniformly distributed when entering the microdroplet photocatalytic reaction unit (4).

3. The ozone-UV photocatalytic reaction experimental device based on microdroplet generation according to claim 2, characterized in that: The microdroplet distribution plate (305) has an inverted conical structure, and its cone angle is adapted to the atomization angle of the high-pressure atomizing nozzle (302); the diameter of the distribution holes gradually decreases from top to bottom.

4. The ozone-UV photocatalytic reaction experimental device based on microdroplet generation according to claim 3, characterized in that: The high-pressure atomizing nozzle (302) and the micro-droplet distribution plate (305) are integrated with an inverted double-cone shell. The feed end of the shell is equipped with a nozzle seat, the high-pressure atomizing nozzle (302) is mounted on the nozzle seat, and the discharge end of the shell is equipped with a liquid collection plate. Multiple micro-droplet distribution plates (305) are sequentially installed in front of the liquid collection plate.

5. The ozone-UV photocatalytic reaction experimental device based on microdroplet generation according to claim 1, characterized in that: The vertical tank (201) is provided with an activated carbon filter layer (208), a quartz sand filter layer (209), a pebble support layer (210), and a heterogeneous catalyst layer (211) arranged from top to bottom.

6. The ozone-UV photocatalytic reaction experimental device based on microdroplet generation according to claim 5, characterized in that: The ozone microbubble inlet (204) is located at the bottom of the heterogeneous catalyst layer (211).

7. The ozone-UV photocatalytic reaction experimental device based on microdroplet generation according to claim 6, characterized in that: The filler for the heterogeneous catalyst layer (211) is activated carbon particles loaded with iron oxide.

8. The ozone-UV photocatalytic reaction experimental device based on microdroplet generation according to claim 1, characterized in that: The cylindrical photocatalytic component (404) is a honeycomb ceramic carrier with a nano-titanium dioxide film loaded on its surface.

9. The ozone-UV photocatalytic reaction experimental device based on microdroplet generation according to claim 1, characterized in that: Sensor interfaces (6) are provided on the pipelines of the final outlet (408) and the pretreatment outlet (205).

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