Wastewater ozone catalytic oxidation treatment process and device

Abstract

The invention discloses a wastewater ozone catalytic oxidation treatment process and device, and relates to the technical field of wastewater treatment.According to the wastewater ozone catalytic oxidation treatment process and device, oxygen-enriched gas exhausted by a tail gas destructor is purified and then reused for an ozone generator, the scale of an oxygen preparation system such as an air compressor and an oxygen generator is reduced, and the production efficiency is improved. Therefore, the equipment investment and the operation cost are reduced, and the pollution of harmful gases such as volatile organic compounds (VOCs) in the tail gas to the environment is effectively avoided; meanwhile, carbon dioxide is removed in the tail gas treatment process, and carbon emission is further reduced; besides, through the chemical reaction of treating carbon dioxide by sodium peroxide, not only is harmful gas successfully removed, but also oxygen is additionally generated and is used for supplementing the oxygen concentration which is reduced due to ozone reaction consumption in the mixed gas; while the tail gas recycling efficiency is improved, the dependence on external oxygen is remarkably reduced, and the energy consumption of oxygen production equipment and ozone generation is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a wastewater ozone catalytic oxidation treatment process and a device. Background Art

[0002] With the rapid development of modern industry, industrial wastewater often contains difficult-to-degrade organic matter. These organic matter have large molecular weight, strong toxicity and complex structure, and are difficult to be degraded by ordinary microorganisms. Many of them are carcinogenic, teratogenic and mutagenic, and their harm is further amplified through bioaccumulation. Chemical oxidation is a commonly used method for water pollution control. Among them, ozone has the strongest oxidizing property and is effective in decolorization, deodorization, sterilization and removal of organic and inorganic matter without secondary pollution. Ozone only requires air and electricity to prepare and is easy to operate. Therefore, its research and application in the field of wastewater treatment are becoming increasingly extensive.

[0003] Ozone oxidation of organic matter mainly occurs through two pathways: direct oxidation and hydroxyl radical oxidation. Some metal catalysts can promote ozone decomposition and generate highly oxidizing hydroxyl radicals, thereby improving treatment efficiency. Therefore, ozone catalytic oxidation technology is widely used in wastewater treatment, especially solid catalysts. Due to their easy separation, less secondary pollution, and suitability for continuous operation, heterogeneous ozone catalytic oxidation technology has attracted much attention in recent years. The existing ozone catalytic oxidation process includes: air is pressurized by an air compressor to prepare more than 90% high-purity oxygen, and then ozone is prepared by an ozone generator. Ozone is mixed with wastewater and then enters a catalytic reactor to react with organic matter for oxidation. After the reaction, the tail gas is treated by a tail gas destroyer and then discharged, and the reactor effluent is discharged through the overflow port. The main cost of this process comes from the power consumption of the ozone preparation system, of which oxygen production and ozone generation each account for about 50% of the power consumption. Due to the low preparation efficiency of the ozone generator, about 80% of the oxygen produced by air is not effectively utilized and will be discharged with the tail gas through the tail gas destroyer. It can be seen that recycling the oxygen in the tail gas to reduce the cost of oxygen production is the key to reducing the total cost of the process. Summary of the invention

[0004] In view of the above existing problems, the present invention is proposed.

[0005] The present invention provides a wastewater ozone catalytic oxidation treatment process and device to solve the problem of large scale and high energy consumption of air compressors and oxygen generators caused by low oxygen utilization rate of ozone generators.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: In a first aspect, an embodiment of the present invention provides a wastewater ozone catalytic oxidation treatment process, which comprises: Step S1, an air compressor compresses ambient air and sends it to an oxygen generator, and the oxygen generator generates high-purity oxygen through gas separation technology; Step S2, high-purity oxygen enters the ozone generator from the oxygen generator, generates ozone under high-voltage discharge conditions, and the generated ozone gas is sent to the catalytic reactor to participate in wastewater treatment; Step S3, wastewater enters the catalytic reactor through the water inlet; under the action of the ozone catalyst, ozone decomposes to generate hydroxyl radicals, oxidizes and mineralizes organic pollutants in the wastewater, reduces the concentration of pollutants in the wastewater, and generates tail gas at the same time; Step S4, the pressure detector and the tail gas suction fan installed on the top of the reactor work in conjunction to maintain a slightly negative pressure state inside the reactor; the tail gas is introduced into the tail gas destroyer for flow direction adjustment and centralized collection; Step S5, the tail gas enters the activated carbon adsorption column, and the activated carbon in the column adsorbs VOCs; Step S6, the purified tail gas is introduced into a sodium peroxide particle reaction column to react and obtain oxygen-rich tail gas; Step S7, the purified oxygen-rich tail gas is sent to the boosting tank through the boosting pump for pressure regulation. The tail gas after pressure regulation flows into the pressure releaser and finally enters the ozone generator. The oxygen in the oxygen-rich tail gas is used as a raw material for ozone generation, completing the recycling. During the circulation process, the controller monitors and regulates the gas flow and reactor pressure.

[0007] As a preferred embodiment of the wastewater ozone catalytic oxidation treatment process described in the present invention, wherein: in step S3, the exhaust gas produced by the reaction includes unreacted ozone, oxygen, volatile organic compounds (VOCs), water vapor and carbon dioxide, and the ozone in the exhaust gas produced by the reaction is only pyrolyzed into oxygen by the exhaust gas destructor, and the ozone in steps S5 and S6 does not react.

[0008] As a preferred embodiment of the wastewater ozone catalytic oxidation treatment process described in the present invention, in step S5, the activated carbon in the column adsorbs VOCs for 2-6 hours.

[0009] As a preferred embodiment of the wastewater ozone catalytic oxidation treatment process of the present invention, in step S6, the reaction comprises: The carbon dioxide in the exhaust gas reacts with sodium peroxide to form sodium carbonate, while releasing oxygen. The water vapor in the tail gas reacts with sodium peroxide to generate solid sodium hydroxide, which increases the oxygen concentration of the tail gas to obtain oxygen-enriched tail gas.

[0010] As a preferred solution of the wastewater ozone catalytic oxidation treatment process of the present invention, the step of the controller monitoring and adjusting the gas flow rate and the reactor pressure includes: Use an oxygen concentration sensor to measure the oxygen concentration of exhaust gas , calculate the oxygen concentration deviation , the calculation formula is: , in, is the real-time oxygen concentration deviation, is the target oxygen concentration, It is the exhaust oxygen concentration measured in real time; According to the real-time oxygen concentration deviation , dynamically adjust the exhaust flow According to the proportional integral PI control principle, the exhaust gas flow is dynamically adjusted, and the adjustment formula is: , in, is the real-time exhaust gas flow rate, is the initial exhaust gas flow rate, is the proportional gain, is the integral gain, is the real-time oxygen concentration deviation, It is the integrated value of the accumulated oxygen concentration deviation.

[0011] As a preferred solution of the wastewater ozone catalytic oxidation treatment process of the present invention, the step of the controller monitoring and adjusting the gas flow rate and the reactor pressure also includes: Adjust the pressure in the reaction column , adjust the removal rate of carbon dioxide and water vapor: Set the real-time pressure in the reaction column Oxygen production The relationship is defined as: , in, is the real-time pressure, is the real-time oxygen generation, R is the gas constant, T is the reaction column temperature, V is the volume of the reaction column; According to the pressure deviation Adjustment, pressure deviation The calculation formula is: , in, is the pressure deviation, is the proportional gain, is the differential gain, the proportional gain Used to adjust the pressure in the reaction column according to the oxygen concentration deviation, differential gain Used to correct the pressure change trend according to the change rate of oxygen concentration deviation. is the rate of change of oxygen concentration deviation, Adjust the pressure in the reaction column, the adjustment formula is: , in, is the adjusted target pressure, is the initial set pressure.

[0012] As a preferred solution of the wastewater ozone catalytic oxidation treatment process of the present invention, the step of the controller monitoring and adjusting the gas flow rate and the reactor pressure also includes: Adjust the working pressure of the booster pump and flow , improve the exhaust gas reflow efficiency: The boost pump pressure adjustment formula is: , in, is the real-time pressure of the booster pump, is the target pressure after the reaction column is adjusted, is the boost system gain, The booster pump flow adjustment formula is: , in, is the real-time flow of the booster pump, is the real-time exhaust gas flow rate, Adjust the gain for flow.

[0013] In a second aspect, the present invention provides a wastewater ozone catalytic oxidation treatment device, comprising: Air compressor, oxygen generator, ozone generator, tail gas destroyer, activated carbon adsorption column, sodium peroxide particle reaction column, catalytic reactor, tail gas suction fan, booster tank, pressure release device, water inlet, water outlet, ozone catalyst, pressure detector and controller; The air compressor is connected to one end of the oxygen generator, the oxygen generator is connected to the ozone generator, the ozone generator is connected to the catalytic reactor, the catalytic reactor is connected to the exhaust gas suction fan through the exhaust gas pipeline, the exhaust gas suction fan is connected to the exhaust gas destroyer, the exhaust gas destroyer is connected to the activated carbon adsorption column, the activated carbon adsorption column is connected to the sodium peroxide particle reaction column, the sodium peroxide particle reaction column is connected to the booster tank, the booster tank is connected to the pressure releaser, and the pressure releaser is connected to the ozone generator through a pipeline to form a cycle; the catalytic reactor is also connected to the external water inlet system through the water inlet, and the treated wastewater is discharged through the water outlet; a pressure detector is installed on the top of the catalytic reactor, the pressure detector is connected to the controller, and the controller is also connected to the exhaust gas suction fan, the booster tank and the pressure releaser, so as to monitor and adjust the system operation status.

[0014] As a preferred solution of the wastewater ozone catalytic oxidation treatment process of the present invention, the air compressor is used to inhale air from the environment and compress it to obtain compressed air. The oxygen concentrator is used to extract high-purity oxygen from compressed air. The ozone generator uses high-purity oxygen to generate ozone through electric field discharge. The catalytic reactor is used to contact the wastewater with ozone in the reactor and complete the oxidation degradation of organic pollutants under the action of the ozone catalyst. The pressure detector and tail gas suction fan are used to monitor and maintain the pressure state in the catalytic reactor. The tail gas destroyer is used to centrally process the tail gas delivered from the catalytic reactor, adjust the direction of the tail gas flow and remove part of the ozone.

[0015] As a preferred embodiment of the wastewater ozone catalytic oxidation treatment device of the present invention, the activated carbon adsorption column is used to remove volatile organic compounds (VOCs) in the tail gas. The sodium peroxide particle reaction column decomposes impurities and water vapor in the tail gas through chemical reactions with carbon dioxide and water vapor, and generates oxygen-rich tail gas. The booster tank is used to boost and store the purified oxygen-rich tail gas. The pressure release device is used to adjust the flow and pressure of the exhaust gas. The controller monitors and adjusts the system operating status, including gas flow and reactor pressure.

[0016] The beneficial effects of the present invention are as follows: the present invention significantly reduces the scale and energy consumption of oxygen production equipment by recycling the tail gas in the ozone catalytic oxidation process, as follows: The present invention, firstly, cancels the breathing valve at the top of the catalytic reactor, and instead adopts a pressure detector to work in conjunction with the exhaust gas destroyer suction fan to control the micro-negative pressure state inside the catalytic reactor; prevents external air from entering the catalytic reactor through the breathing valve, and effectively improves the purity of the exhaust gas; then, the exhaust gas generated by the reactor enters the exhaust gas destroyer through the exhaust gas suction fan for centralized treatment, and is then transported to the activated carbon adsorption column, in which the exhaust gas stays for 2 to 6 hours, and volatile organic compounds (VOCs) are removed. The exhaust gas treated by the activated carbon adsorption column is introduced into the sodium peroxide particle reaction column, which not only removes impurities in the exhaust gas, but also increases the oxygen concentration of the exhaust gas, thereby generating oxygen-rich gas; finally, the purified exhaust gas is pressed into the boosting tank for storage by a boosting pump, and after the pressure is adjusted by a pressure releaser, the exhaust gas is re-sent to the air inlet of the ozone generator and circulated for ozone generation.

[0017] Through the above process design, the present invention significantly reduces the dependence on external oxygen while improving the tail gas recycling efficiency, and reduces the energy consumption of oxygen production equipment and ozone generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the traditional wastewater ozone catalytic oxidation treatment process.

[0020] Figure 2 It is a schematic diagram of the process flow of wastewater ozone catalytic oxidation treatment according to the present invention.

[0021] Legend: Figure 1 In: 1. Air compressor; 2. Oxygen generator; 3. Ozone generator; 4. Tail gas destroyer; 5. Water inlet; 6. Water outlet; 7. Catalytic reactor; 8. Tail gas suction fan; 9. Ozone catalyst; 10. Breathing valve; Figure 2 In: 1. Air compressor; 2. Oxygen generator; 3. Ozone generator; 4. Tail gas destroyer; 5. Activated carbon adsorption column; 6. Sodium peroxide particle reaction column; 7. Catalytic reactor; 8. Tail gas suction fan; 9. Booster tank; 10. Pressure release device; 11. Water inlet; 12. Water outlet; 13. Ozone catalyst; 14. Pressure detector; 15. Controller. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] Example 1, reference Figure 1 and Figure 2 , which is the first embodiment of the present invention, provides a wastewater ozone catalytic oxidation treatment process, comprising the following steps: Step S1, an air compressor compresses ambient air and sends it to an oxygen generator, and the oxygen generator generates high-purity oxygen through gas separation technology; Step S2, high-purity oxygen enters the ozone generator from the oxygen generator, generates ozone under high-voltage discharge conditions, and the generated ozone gas is sent to the catalytic reactor to participate in wastewater treatment; Step S3, wastewater enters the catalytic reactor through the water inlet; under the action of the ozone catalyst, ozone decomposes to generate hydroxyl radicals, oxidizes and mineralizes organic pollutants in the wastewater, reduces the concentration of pollutants in the wastewater, and generates tail gas at the same time; In step S3, the tail gas generated by the reaction includes unreacted ozone, oxygen, volatile organic compounds (VOCs), water vapor and carbon dioxide; Step S4, the pressure detector and the tail gas suction fan installed on the top of the reactor work in conjunction to maintain a slightly negative pressure state inside the reactor; the tail gas is introduced into the tail gas destroyer for flow direction adjustment and centralized collection; Step S5, the tail gas enters the activated carbon adsorption column, and the activated carbon in the column adsorbs VOCs; In step S5, the activated carbon in the column adsorbs VOCs for 2-6 hours; Step S6, the purified tail gas is introduced into a sodium peroxide particle reaction column to react and obtain oxygen-rich tail gas; In step S6, the reaction comprises: The carbon dioxide in the exhaust gas reacts with sodium peroxide to form sodium carbonate, while releasing oxygen. The water vapor in the tail gas reacts with sodium peroxide to generate solid sodium hydroxide, which increases the oxygen concentration of the tail gas to obtain oxygen-rich tail gas; Step S7, the purified oxygen-rich tail gas is sent to the booster tank through the booster pump for pressure regulation, and the tail gas after pressure regulation flows into the pressure release device and finally enters the ozone generator. The oxygen in the oxygen-rich tail gas is used as a raw material for ozone generation, completing recycling. During the circulation process, the controller monitors and regulates the gas flow rate and the reactor pressure; The steps of the controller monitoring and regulating the gas flow and reactor pressure include: Use an oxygen concentration sensor to measure the oxygen concentration of exhaust gas , calculate the oxygen concentration deviation , the calculation formula is: , in, is the real-time oxygen concentration deviation, is the target oxygen concentration, It is the exhaust oxygen concentration measured in real time; According to the real-time oxygen concentration deviation , dynamically adjust the exhaust flow According to the proportional integral PI control principle, the exhaust gas flow is dynamically adjusted, and the adjustment formula is: , in, is the real-time exhaust gas flow rate, is the initial exhaust gas flow rate, is the proportional gain, is the integral gain, is the real-time oxygen concentration deviation, is the cumulative oxygen concentration deviation integral value, The controller monitors and regulates the gas flow rate and the reactor pressure and further comprises: Adjust the pressure in the reaction column , adjust the removal rate of carbon dioxide and water vapor: Set the real-time pressure in the reaction column Oxygen production The relationship is defined as: , in, is the real-time pressure, is the real-time oxygen generation, R is the gas constant, T is the reaction column temperature, V is the volume of the reaction column; According to the pressure deviation Adjustment, pressure deviation The calculation formula is: , in, is the pressure deviation, is the proportional gain, is the differential gain, the proportional gain Used to adjust the pressure in the reaction column according to the oxygen concentration deviation, differential gain Used to correct the pressure change trend according to the change rate of oxygen concentration deviation. is the rate of change of oxygen concentration deviation, Adjust the pressure in the reaction column, the adjustment formula is: , in, is the adjusted target pressure, is the initial set pressure; The controller monitors and regulates the gas flow rate and the reactor pressure and further comprises: Adjust the working pressure of the booster pump and flow , improve the exhaust gas reflow efficiency: The boost pump pressure adjustment formula is: , in, is the real-time pressure of the booster pump, is the target pressure after the reaction column is adjusted, is the boost system gain, The booster pump flow adjustment formula is: , in, is the real-time flow of the booster pump, is the real-time exhaust gas flow rate, Adjust the gain for flow; Specifically, through the adjustment steps of the controller, real-time monitoring and dynamic adjustment of the exhaust gas oxygen concentration are achieved, and the exhaust gas flow, reaction column pressure and boosting system parameters are optimized, thereby reducing the consumption of sodium peroxide particles, extending their service life, reducing the energy consumption of the boosting system, and improving operating efficiency.

[0026] This embodiment also provides a wastewater ozone catalytic oxidation treatment device, including: an air compressor, an oxygen generator, an ozone generator, an exhaust gas destroyer, an activated carbon adsorption column, a sodium peroxide particle reaction column, a catalytic reactor, an exhaust gas suction fan, a booster tank, a pressure release device, a water inlet, a water outlet, an ozone catalyst, a pressure detector and a controller; The air compressor is connected to one end of the oxygen generator, the oxygen generator is connected to the ozone generator, the ozone generator is connected to the catalytic reactor, the catalytic reactor is connected to the tail gas suction fan through the tail gas pipeline, the tail gas suction fan is connected to the tail gas destroyer, the tail gas destroyer is connected to the activated carbon adsorption column, the activated carbon adsorption column is connected to the sodium peroxide particle reaction column, the sodium peroxide particle reaction column is connected to the booster tank, the booster tank is connected to the pressure releaser, and the pressure releaser is connected to the ozone generator through the pipeline to form a cycle; the catalytic reactor is also connected to the external water inlet system through the water inlet, and the treated wastewater is discharged through the water outlet; a pressure detector is installed on the top of the catalytic reactor, the pressure detector is connected to the controller, and the controller is also connected to the tail gas suction fan, the booster tank and the pressure releaser, so as to monitor and adjust the system operation status; Air compressor is used to suck air from the environment and compress it to obtain compressed air. Oxygen generator, used to extract high purity oxygen from compressed air, Ozone generator uses high-purity oxygen to generate ozone through electric field discharge. The catalytic reactor is used to contact the wastewater with ozone in the reactor and complete the oxidation degradation of organic pollutants under the action of the ozone catalyst. Pressure detector and tail gas suction fan are used to monitor and maintain the pressure state in the catalytic reactor. The tail gas destroyer is used to centrally treat the tail gas delivered from the catalytic reactor, adjust the tail gas flow direction and remove part of the ozone. Activated carbon adsorption column is used to remove volatile organic compounds (VOCs) in exhaust gas. The sodium peroxide particle reaction column decomposes impurities and water vapor in the exhaust gas through chemical reactions with carbon dioxide and water vapor, and generates oxygen-rich exhaust gas. Booster tank, used to pressurize and store the purified oxygen-rich tail gas. Pressure release device, used to adjust the flow and pressure of exhaust gas, The controller monitors and adjusts the system operating status, including gas flow and reactor pressure.

[0027] In summary, the present invention significantly reduces the scale and energy consumption of oxygen production equipment by recycling the tail gas in the ozone catalytic oxidation process, as follows: The present invention, firstly, cancels the breathing valve at the top of the catalytic reactor, and instead adopts a pressure detector to work in conjunction with the exhaust gas destroyer suction fan to control the micro-negative pressure state inside the catalytic reactor; prevents external air from entering the catalytic reactor through the breathing valve, and effectively improves the purity of the exhaust gas; then, the exhaust gas generated by the reactor enters the exhaust gas destroyer through the exhaust gas suction fan for centralized treatment, and is then transported to the activated carbon adsorption column, in which the exhaust gas stays for 2 to 6 hours, and volatile organic compounds (VOCs) are removed. The exhaust gas treated by the activated carbon adsorption column is introduced into the sodium peroxide particle reaction column, which not only removes impurities in the exhaust gas, but also increases the oxygen concentration of the exhaust gas, thereby generating oxygen-rich gas; finally, the purified exhaust gas is pressed into the boosting tank for storage by a boosting pump, and after the pressure is adjusted by a pressure releaser, the exhaust gas is re-sent to the air inlet of the ozone generator and circulated for ozone generation.

[0028] Through the above process design, the present invention significantly reduces the dependence on external oxygen while improving the tail gas recycling efficiency, and reduces the energy consumption of oxygen production equipment and ozone generation.

[0029] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A wastewater ozone catalytic oxidation treatment process, characterized in that: include, Step S1, an air compressor compresses ambient air and sends it to an oxygen generator, and the oxygen generator generates high-purity oxygen through gas separation technology; Step S2, high-purity oxygen enters the ozone generator from the oxygen generator, generates ozone under high-voltage discharge conditions, and the generated ozone gas is sent to the catalytic reactor to participate in wastewater treatment; Step S3, wastewater enters the catalytic reactor through the water inlet; under the action of the ozone catalyst, ozone decomposes to generate hydroxyl radicals, oxidizes and mineralizes organic pollutants in the wastewater, and the reaction generates tail gas; Step S4, the pressure detector installed on the top of the reactor and the tail gas suction fan work in conjunction to maintain a slightly negative pressure state inside the reactor; The exhaust gas is introduced into the exhaust gas destroyer for flow direction adjustment and centralized collection; Step S5, the tail gas enters the activated carbon adsorption column, and the activated carbon in the column adsorbs VOCs; Step S6, the purified tail gas is introduced into a sodium peroxide particle reaction column to react and obtain oxygen-rich tail gas; Step S7, the purified oxygen-rich tail gas is sent to the boosting tank through the boosting pump for pressure regulation. The tail gas after pressure regulation flows into the pressure releaser and finally enters the ozone generator. The oxygen in the oxygen-rich tail gas is used as a raw material for ozone generation, completing the recycling. During the circulation process, the controller monitors and regulates the gas flow and reactor pressure.

2. A wastewater ozone catalytic oxidation treatment process as claimed in claim 1, characterized in that: In step S3, the tail gas produced by the reaction includes unreacted ozone, oxygen, volatile organic compounds (VOCs), water vapor and carbon dioxide. The ozone in the tail gas produced by the reaction is only pyrolyzed into oxygen by the tail gas destroyer, and the ozone in steps S5 and S6 does not react.

3. A wastewater ozone catalytic oxidation treatment process as claimed in claim 2, characterized in that: In step S5, the activated carbon in the column adsorbs VOCs for 2-6 hours.

4. A wastewater ozone catalytic oxidation treatment process as claimed in claim 3, characterized in that: In step S6, the reaction comprises: The carbon dioxide in the exhaust gas reacts with sodium peroxide to form sodium carbonate, while releasing oxygen. The water vapor in the tail gas reacts with sodium peroxide to generate solid sodium hydroxide, which increases the oxygen concentration of the tail gas to obtain oxygen-enriched tail gas.

5. A wastewater ozone catalytic oxidation treatment process as claimed in claim 4, characterized in that: The steps of the controller monitoring and adjusting the gas flow rate and the reactor pressure include: Use an oxygen concentration sensor to measure the oxygen concentration of exhaust gas , calculate the oxygen concentration deviation , the calculation formula is: ， in, is the real-time oxygen concentration deviation, is the target oxygen concentration, It is the exhaust gas oxygen concentration measured in real time; According to the real-time oxygen concentration deviation , dynamically adjust the exhaust flow According to the proportional integral PI control principle, the exhaust gas flow is dynamically adjusted, and the adjustment formula is: ， in, is the real-time exhaust gas flow rate, is the initial exhaust gas flow rate, is the proportional gain, is the integral gain, is the real-time oxygen concentration deviation, It is the integrated value of the accumulated oxygen concentration deviation.

6. A wastewater ozone catalytic oxidation treatment process as claimed in claim 5, characterized in that: The step of the controller monitoring and adjusting the gas flow rate and the reactor pressure also includes: Adjust the pressure in the reaction column , adjust the removal rate of carbon dioxide and water vapor: Set the real-time pressure in the reaction column Oxygen production The relationship is defined as: ， in, is the real-time pressure, is the real-time oxygen generation, R is the gas constant, T is the reaction column temperature, V is the volume of the reaction column; According to the pressure deviation Adjustment, pressure deviation The calculation formula is: ， in, is the pressure deviation, is the proportional gain, is the differential gain, the proportional gain Used to adjust the pressure in the reaction column according to the oxygen concentration deviation, differential gain Used to correct the pressure change trend according to the change rate of oxygen concentration deviation. is the rate of change of oxygen concentration deviation, Adjust the pressure in the reaction column, the adjustment formula is: ， in, is the adjusted target pressure, is the initial set pressure.

7. A wastewater ozone catalytic oxidation treatment process as claimed in claim 6, characterized in that: The step of the controller monitoring and adjusting the gas flow rate and the reactor pressure also includes: Adjust the working pressure of the booster pump and flow : The boost pump pressure adjustment formula is: ， in, is the real-time pressure of the booster pump, is the target pressure after the reaction column is adjusted, is the boost system gain, The booster pump flow adjustment formula is: ， in, is the real-time flow of the booster pump, is the real-time exhaust gas flow rate, Adjust the gain for flow.

8. A wastewater ozone catalytic oxidation treatment device, based on a wastewater ozone catalytic oxidation treatment process according to any one of claims 1 to 7, characterized in that: include: Air compressor, oxygen generator, ozone generator, tail gas destroyer, activated carbon adsorption column, sodium peroxide particle reaction column, catalytic reactor, tail gas suction fan, booster tank, pressure release device, water inlet, water outlet, ozone catalyst, pressure detector and controller; The air compressor is connected to one end of the oxygen generator, the oxygen generator is connected to the ozone generator, the ozone generator is connected to the catalytic reactor, the catalytic reactor is connected to the exhaust gas suction fan through the exhaust gas pipeline, the exhaust gas suction fan is connected to the exhaust gas destroyer, the exhaust gas destroyer is connected to the activated carbon adsorption column, the activated carbon adsorption column is connected to the sodium peroxide particle reaction column, the sodium peroxide particle reaction column is connected to the booster tank, the booster tank is connected to the pressure releaser, and the pressure releaser is connected to the ozone generator through a pipeline to form a cycle; the catalytic reactor is also connected to the external water inlet system through the water inlet, and the treated wastewater is discharged through the water outlet; a pressure detector is installed on the top of the catalytic reactor, the pressure detector is connected to the controller, and the controller is also connected to the exhaust gas suction fan, the booster tank and the pressure releaser, so as to monitor and adjust the system operation status.

9. A wastewater ozone catalytic oxidation treatment device as claimed in claim 8, characterized in that: The air compressor is used to suck air from the environment and compress it to obtain compressed air. The oxygen concentrator is used to extract high-purity oxygen from compressed air. The ozone generator uses high-purity oxygen to generate ozone through electric field discharge. The catalytic reactor is used to contact the wastewater with ozone in the reactor and complete the oxidation degradation of organic pollutants under the action of the ozone catalyst. The pressure detector and tail gas suction fan are used to monitor and maintain the pressure state in the catalytic reactor. The tail gas destroyer is used to centrally process the tail gas delivered from the catalytic reactor, adjust the direction of the tail gas flow and remove part of the ozone.

10. The wastewater ozone catalytic oxidation treatment device according to claim 9, characterized in that: The activated carbon adsorption column is used to remove volatile organic compounds (VOCs) in tail gas. The sodium peroxide particle reaction column decomposes impurities and water vapor in the tail gas through chemical reactions with carbon dioxide and water vapor, and generates oxygen-rich tail gas. The booster tank is used to boost and store the purified oxygen-rich tail gas. The pressure release device is used to adjust the flow and pressure of the exhaust gas. The controller monitors and adjusts the system operating status, including gas flow and reactor pressure.

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