System and method for treating sewage and wastewater containing antibiotics and resistance genes

Abstract

The invention relates to a treatment system and a treatment method for sewage and wastewater containing antibiotics and resistance genes, the treatment system comprises a regulating tank, an aerobic tank and an electro-catalysis advanced oxidation treatment tank which are communicated in sequence, and an electrode plate assembly is arranged in the electro-catalysis advanced oxidation treatment tank; the upper ports of the adjusting tank, the aerobic tank and the electro-catalysis advanced oxidation treatment tank are sealed, the tops of the inner cavities of the adjusting tank and the aerobic tank are connected with a gas collecting pipe, the gas collecting pipe is communicated with the bottom of the inner cavity of the electro-catalysis advanced oxidation treatment tank, and a first gas driving mechanism is arranged on the gas collecting pipe; the top of the inner cavity of the electrocatalysis advanced oxidation treatment tank is connected with a gas conveying pipe, the gas conveying pipe is communicated with the bottom of the inner cavity of the adjusting tank, and a second gas driving mechanism is arranged on the gas conveying pipe. The aerobic treatment effect and the electrocatalytic advanced oxidation treatment efficiency of the wastewater containing antibiotics and resistance genes in the low-temperature region can be improved, harmless treatment of wastewater in pharmaceutical and chemical industrial parks, hospital sewage and other wastewater is achieved, and harmful gas is prevented from entering surrounding air.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, and in particular to a wastewater treatment system and method containing antibiotics and resistance genes. Background Technology

[0002] Wastewater from pharmaceutical and chemical industrial parks, hospitals, and livestock farms contains a wide variety of antibiotics in high concentrations. Untreated discharge is a major cause of the generation and spread of antibiotic resistance genes in the environment. These resistance genes can further spread rapidly and widely through horizontal gene transfer between environmental host bacteria and pathogens. A process combining aerobic biochemical treatment with electrocatalytic oxidation can effectively remove antibiotics and pathogens from wastewater, reducing the environmental risks posed by antibiotics and resistance genes, and achieving good wastewater treatment results. However, in low-temperature regions, maintaining dissolved oxygen in wastewater requires additional energy, leading to reduced microbial activity, sludge bulking, poor organic matter degradation, and excessive ammonia nitrogen levels. Especially during the treatment of hospital wastewater, livestock farm wastewater, and pharmaceutical wastewater, harmful microbial aerosols are easily generated, causing infections and potentially producing harmful gases such as ammonia and hydrogen sulfide, as well as volatile organic compounds like methane, causing air pollution. In addition, sludge or bubbles generated by the reaction easily adhere to the surface of the electrode plates in the electrocatalytic oxidation treatment device, affecting mass transfer and causing a significant decrease in catalytic effect. Furthermore, in conventional electrocatalytic oxidation treatment devices, the cathode and anode of the electrode plates are often arranged in pairs facing each other, and there are processing dead zones at both ends of the electrode plates where no electrocatalytic oxidation reaction has occurred, resulting in a decrease in treatment effect. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a wastewater treatment system and method containing antibiotics and resistance genes, which improves the aerobic biochemical treatment and electrocatalytic treatment effect in a low temperature environment, while avoiding harmful gases from entering the surrounding air.

[0004] To solve the above problems, the technical solution adopted by the present invention is: a wastewater treatment system containing antibiotics and resistance genes, comprising an equalization tank, an aerobic tank and an electrocatalytic advanced oxidation treatment tank connected in sequence, wherein an electrode plate assembly is provided inside the electrocatalytic advanced oxidation treatment tank; The upper ports of the regulating tank, aerobic tank and electrocatalytic advanced oxidation treatment tank are all sealed. The top of the inner cavity of the regulating tank and aerobic tank is connected to a gas collecting pipe. The gas collecting pipe is connected to the bottom of the inner cavity of the electrocatalytic advanced oxidation treatment tank, and a first gas driving mechanism is provided on the gas collecting pipe. The top of the inner cavity of the electrocatalytic advanced oxidation treatment tank is connected to a gas supply pipe, which is connected to the bottom of the inner cavity of the regulating tank, and a second gas driving mechanism is provided on the gas supply pipe.

[0005] Furthermore, a vertical heat-conducting sedimentation cylinder is provided at the center of the electrocatalytic advanced oxidation treatment tank. The aerobic tank is connected to the bottom of the heat-conducting sedimentation cylinder through a water supply pipe. The bottom of the heat-conducting sedimentation cylinder is connected to the bottom of the aerobic tank through a return pipe. A sludge pump is provided on the return pipe.

[0006] Furthermore, the regulating tank is an insulated and heat-insulating tank, the thermally conductive precipitation cylinder is an insulated cylinder, and the electrode plate assembly includes multiple vertical cathode plates and multiple vertical anode plates. The cathode plates and anode plates are alternately arranged between the inner wall of the electrocatalytic advanced oxidation treatment tank and the outer wall of the thermally conductive precipitation cylinder, and the width direction of the cathode plates and anode plates is consistent with the radial direction of the thermally conductive precipitation cylinder. The cathode plates and anode plates are connected to a DC power supply.

[0007] Furthermore, the bottom of the regulating tank, the aerobic tank, and the electrocatalytic advanced oxidation treatment tank are all equipped with a gas distribution mechanism. The gas collecting pipe is connected to the gas distribution mechanism of the electrocatalytic advanced oxidation treatment tank, and the gas conveying pipe is connected to the gas distribution mechanism of the regulating tank.

[0008] Furthermore, a stabilizing cylinder is provided at the center of the regulating tank, and a water inlet pipe is connected to the bottom of the stabilizing cylinder.

[0009] Furthermore, the equalization tank, aerobic tank, and electrocatalytic advanced oxidation treatment tank are all connected to pressure gauges and pressure regulating valves.

[0010] Furthermore, an exhaust pipe is connected to the top of the inner cavity of the electrocatalytic advanced oxidation treatment tank.

[0011] The above-mentioned wastewater treatment system for antibiotics and resistance genes involves the wastewater entering the equalization tank from the bottom of the central stabilizing cylinder, overflowing from the top of the stabilizing cylinder into the outer aeration zone, and then the wastewater in the equalization tank is uniformly transported to the aerobic tank. After aerobic treatment with activated sludge, the wastewater is then passed into a heat-conducting sedimentation tank to separate from the sludge. The supernatant overflows into the outer electrocatalytic advanced oxidation treatment tank, where persulfate is added via a dosing device. Under the catalytic action of the electrode plate assembly, the persulfate generates highly oxidizing free radicals, which decompose antibiotics, resistance genes, and other organic pollutants in the wastewater, while killing pathogenic microorganisms. The gas escaping from the equalization tank and the aerobic tank is transported to the electrocatalytic advanced oxidation treatment tank through the gas collection pipe. The gas flows upward in the electrocatalytic advanced oxidation treatment tank, flushing the electrode plate assembly, removing the sludge on the surface of the electrode plate assembly, and carrying away the bubbles generated by the electrocatalytic reaction and attached to the surface of the electrode plate. In addition, harmful components and bacteria in the gas are eliminated and removed, and the heat generated by the electrode plate assembly heats the gas. The gas escaping from the electrocatalytic advanced oxidation treatment tank returns to the equalization tank through a gas pipeline, where it flows upwards, carrying away some volatile harmful substances from the wastewater, reducing the burden on aerobic treatment, increasing the oxygen content of the wastewater, and simultaneously transferring heat from the gas to the wastewater, raising its temperature. The equalization tank, aerobic tank, and electrocatalytic advanced oxidation treatment tank are all connected to pressure gauges and pressure regulating valves. Air is replenished through the pressure regulating valves to balance the gas pressure within the tanks and increase oxygen levels.

[0012] The beneficial effects of this invention are: 1. The gases escaping from the conditioning tank and aerobic tank may carry harmful components, such as hydrogen sulfide, methane, phenols, nitro compounds, pathogenic microbial aerosols, etc. By passing these gases into the electrocatalytic advanced oxidation treatment tank, the microorganisms are disinfected through the electrocatalytic advanced oxidation reaction, and the harmful volatile components such as hydrogen sulfide, methane, phenols, and nitro compounds in the gas are oxidized into non-toxic components, thus preventing these harmful components from directly entering the surrounding air and causing air pollution.

[0013] 2. After the gas is introduced into the electrocatalytic advanced oxidation treatment tank through the gas collection pipe, the gas flows upward and washes the electrode plate assembly, removing the sludge on the surface of the electrode plate assembly and carrying away the bubbles generated by the electrocatalytic reaction and attached to the surface of the electrode plate, thus preventing the bubbles from covering the electrode surface, which would increase the resistance and hinder mass transfer; at the same time, it agitates the wastewater to prevent polarization on the surface of the electrode plate, which would lead to a deterioration in the electrocatalytic oxidation effect.

[0014] 3. The gas escaping from the electrocatalytic advanced oxidation treatment tank contains unreacted mixed air from the aerobic tank, oxygen or chlorine produced by anodic oxidation, and hydrogen produced by cathodic reduction. After these gases are introduced into the equalization tank, they flow upwards, and the airflow disturbance carries volatile harmful substances from the wastewater out of the wastewater, reducing the burden on subsequent aerobic treatment. The chlorine introduced into the aeration zone of the equalization tank can have a pre-sterilization and disinfection effect on the influent, reducing the risk of pathogens entering the next stage of the reaction tank and developing into resistant bacteria and resistance genes. At the same time, it increases the oxygen content of the wastewater, ensuring an aerobic environment for subsequent sludge microbial treatment.

[0015] 4. The electrode plate assembly generates heat during operation, causing the temperature in the electrocatalytic advanced oxidation treatment tank to be higher than that in the equalization tank and the aerobic tank. The sludge that flows back to the heat-conducting sedimentation tank in the aerobic tank, as well as the gas that escapes from the electrocatalytic advanced oxidation treatment tank entering the equalization tank, all carry a certain amount of heat. This can raise the temperature of the sewage sludge in the equalization tank and the aerobic tank, thereby increasing the aerobic treatment temperature. This fully utilizes thermal energy to ensure sludge activity and improves the wastewater treatment effect in low-temperature areas. Attached Figure Description

[0016] Figure 1 This is an overall schematic diagram of the invention; Figure 2This is a top view schematic diagram of the electrocatalytic advanced oxidation treatment tank of the present invention; Reference numerals in the attached diagram: 1—Equalization tank; 2—Aerobic tank; 3—Electrocatalytic advanced oxidation treatment tank; 4—Gas collection pipe; 5—First gas drive mechanism; 6—Gas delivery pipe; 7—Second gas drive mechanism; 8—Heat-conducting sedimentation cylinder; 9—Water delivery pipe; 10—Return pipe; 11—Sludge pump; 12—Cathode plate; 13—Anode plate; 14—Gas distribution mechanism; 15—Stabilizing cylinder; 16—Inlet pipe; 17—Pressure gauge; 18—Pressure regulating valve; 19—Exhaust pipe; 20—Dosing device. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] The wastewater treatment system containing antibiotic and resistance genes of the present invention, such as... Figure 1 and Figure 2 As shown, the system includes a regulating tank 1, an aerobic tank 2, and an electrocatalytic advanced oxidation treatment tank 3, which are connected in sequence. The electrocatalytic advanced oxidation treatment tank 3 is equipped with an electrode plate assembly. The regulating tank 1 is used to temporarily store wastewater and can transport it to the aerobic tank 2 at a uniform flow rate. A stabilizing cylinder 15 is located in the center to homogenize the wastewater. The overflow water at the top is offset from the external aeration airflow, which facilitates the dissipation of harmful gases such as ammonia, hydrogen sulfide, and methane from the wastewater, reducing the toxicity to the sludge in the aerobic tank. The aerobic tank 2 is used for aerobic treatment of the wastewater, decomposing easily biodegradable organic matter (such as drug residues, proteins, and sugars) into carbon dioxide and water, reducing the chemical oxygen demand (COD) and biochemical oxygen demand (BOD) of the wastewater. Through the action of nitrifying bacteria, ammonia nitrogen in the wastewater is converted into nitrate nitrogen, reducing the risk of eutrophication and simultaneously reducing wastewater toxicity. This reduces the load on subsequent advanced treatment (electrocatalytic advanced oxidation) and improves the overall treatment system's removal efficiency of antibiotics and resistance genes from the wastewater. Electrocatalytic advanced oxidation treatment tank 3 performs deep treatment of wastewater. Residual antibiotics, resistance genes, and other organic pollutants after aerobic treatment can be neutralized by the strong oxidizing free radicals generated by electrocatalysis. ・ OH、 ・ The wastewater undergoes thorough decomposition (including SO4⁻, etc.) and further oxidation and decomposition of stubborn organic matter that was not completely degraded in the aerobic tank, resulting in a further reduction in COD and BOD levels to meet stringent discharge standards. Furthermore, the highly oxidizing environment can further kill bacteria, viruses, and other pathogens remaining after aerobic treatment, improving the hygiene and safety of the wastewater.

[0019] Specifically, the upper ports of the equalization tank 1, aerobic tank 2, and electrocatalytic advanced oxidation treatment tank 3 are all sealed, specifically through sealing caps, to prevent harmful gases from these tanks from freely entering the external environment. A gas collecting pipe 4 is connected to the top of the inner cavity of the equalization tank 1 and aerobic tank 2, and this pipe connects to the bottom of the inner cavity of the electrocatalytic advanced oxidation treatment tank 3. A first gas driving mechanism 5 is installed on the gas collecting pipe 4. The gas collecting pipe 4 collects gases escaping from the wastewater in the equalization tank 1 and aerobic tank 2. These gases contain harmful components such as hydrogen sulfide, phenols, nitro compounds, and pathogenic microbial aerosols. Driven by the first gas driving mechanism 5, the collected gases enter the electrocatalytic advanced oxidation treatment tank 3. Through electrocatalytic advanced oxidation, microorganisms are disinfected, and harmful volatile components such as hydrogen sulfide, phenols, and nitro compounds in the gas are oxidized into non-toxic components, preventing these harmful components from directly entering the surrounding air and causing air pollution. In addition, after the gas enters the electrocatalytic advanced oxidation treatment tank 3, it flows upward to stir the wastewater and prevent polarization on the electrode plate surface, which would lead to a deterioration in the electroactivation effect. At the same time, it washes the electrode plate assembly to remove the sludge on the surface of the electrode plate assembly and removes the bubbles generated by the electrocatalytic reaction and attached to the surface of the electrode plate, thus preventing the bubbles from covering the electrode surface and increasing the resistance, which would hinder mass transfer.

[0020] The top of the inner cavity of the electrocatalytic advanced oxidation treatment tank 3 is connected to a gas supply pipe 6, which communicates with the bottom of the inner cavity of the regulating tank 1. A second gas driving mechanism 7 is installed on the gas supply pipe 6. The second gas driving mechanism 7 and the first gas driving mechanism 5 can be gas pumps. At the same time, an exhaust pipe 19 is connected to the top of the inner cavity of the electrocatalytic advanced oxidation treatment tank 3.

[0021] The top of the electrocatalytic advanced oxidation treatment tank 3 is equipped with a dosing device 20, which is used to quantitatively add persulfate to the electrocatalytic advanced oxidation treatment tank 3.

[0022] The wastewater treatment method for antibiotics and resistance genes of the present invention involves the wastewater entering the equalization tank 1 from the bottom of the central stabilizing cylinder 15, overflowing from the top of the stabilizing cylinder 15 into the outer aeration zone, and then the wastewater in the equalization tank 1 is uniformly transported to the aerobic tank 2. After aerobic treatment with activated sludge, the wastewater is then passed into the heat-conducting sedimentation tank 8 to separate from the sludge sedimentation. The supernatant overflows into the outer electrocatalytic advanced oxidation treatment tank 3, where persulfate is added via the dosing device 20. Under the catalytic action of the electrode plate assembly, the persulfate generates highly oxidizing free radicals, which decompose antibiotics, resistance genes and other organic pollutants in the wastewater, and kill pathogenic microorganisms.

[0023] The gas escaping from the equalization tank 1 and the aerobic tank 2 is transported to the electrocatalytic advanced oxidation treatment tank 3 through the gas collection pipe 4. The gas flows upward in the electrocatalytic advanced oxidation treatment tank 3, flushing the electrode plate assembly, removing the sludge on the surface of the electrode plate assembly, and carrying away the bubbles generated by the electrocatalytic reaction and attached to the surface of the electrode plate. In addition, harmful components and bacteria in the gas are eliminated and removed, and the heat generated by the electrode plate assembly heats the gas. The gas escaping from the electrocatalytic advanced oxidation treatment tank 3 returns to the equalization tank 1 through the gas transmission pipe 6 and flows upward in the equalization tank 1, which has a pre-sterilization and disinfection effect on the influent, reduces the risk of pathogenic microorganisms in the aerobic tank developing into resistant bacteria and resistance genes, and carries away some volatile harmful substances in the wastewater, reducing the toxic effect on subsequent aerobic microorganisms, increasing the oxygen content of the wastewater, and at the same time, the heat of the gas is transferred to the wastewater, raising the wastewater temperature.

[0024] The gas escaping from the electrocatalytic advanced oxidation treatment tank 3 contains unreacted mixed air from the aerobic tank 2, oxygen or chlorine produced by anodic oxidation, and hydrogen produced by cathodic reduction. Part of this gas is introduced into the equalization tank 1 through the gas supply pipe 6. The upward flow of the gas, through airflow disturbance, carries harmful substances such as ammonia, hydrogen sulfide, and methane out of the wastewater, preventing them from harming subsequent aerobic microorganisms. Simultaneously, it increases the oxygen content of the wastewater, ensuring an aerobic environment for subsequent sludge microbial treatment. If the wastewater contains a large amount of chloride ions, Cl⁻ is more easily oxidized into chlorine atoms than OH⁻ by losing electrons. These chlorine atoms combine to form chlorine molecules, releasing chlorine gas. Introducing this gas into the equalization tank 1 can pre-sterilize and disinfect the influent, reducing the number of pathogenic bacteria entering the aerobic tank 2 and lowering the risk of pathogenic microorganisms developing into resistant bacteria and resistance genes. Furthermore, the electrode plate assembly in the electrocatalytic advanced oxidation treatment tank 3 generates heat during operation, causing the temperature in the electrocatalytic advanced oxidation treatment tank 3 to be higher than that in the equalization tank 1 and the aerobic tank 2. The gas escaping from the electrocatalytic advanced oxidation treatment tank 3 carries a certain amount of heat, which, after entering the equalization tank 1, can raise the temperature of the wastewater in the equalization tank 1, thereby increasing the aerobic treatment temperature. This fully utilizes thermal energy to ensure the activity of aerobic microorganisms, thus improving the aerobic treatment effect in low-temperature areas. Some of the gas is discharged through the exhaust pipe 19, and the gas discharged from the exhaust pipe 19 can be sampled and inspected periodically to ensure the harmlessness of the discharged gas.

[0025] The wastewater in aerobic tank 2 contains sludge, which enters electrocatalytic advanced oxidation treatment tank 3 along with the wastewater. To prevent excessive sludge adhesion to the electrode plate assembly, a vertical thermally conductive sedimentation cylinder 8 is installed at the center of electrocatalytic advanced oxidation treatment tank 3. Aerobic tank 2 is connected to the bottom of thermally conductive sedimentation cylinder 8 via a water supply pipe 9, and the bottom of thermally conductive sedimentation cylinder 8 is connected to the bottom of aerobic tank 2 via a return pipe 10. A sludge pump 11 is installed on the return pipe 10. Wastewater in aerobic tank 2 reaches the bottom of thermally conductive sedimentation cylinder 8 through water supply pipe 9. The wastewater flows upward in thermally conductive sedimentation cylinder 8, and the sludge in the wastewater settles to the bottom of thermally conductive sedimentation cylinder 8. When the wastewater moves to the upper port of thermally conductive sedimentation cylinder 8, it overflows into electrocatalytic advanced oxidation treatment tank 3. Under the action of sludge pump 11, part of the sludge deposited at the bottom of thermally conductive sedimentation cylinder 8 is transported to the bottom of aerobic tank 2 through return pipe 10, realizing sludge return, and part of the sludge is discharged. The thermally conductive sedimentation tank 8 is made of thermally conductive material, allowing the heat generated by the electrode plate assembly to be transferred to the sludge through the side wall of the sedimentation tank 8. This maintains a higher temperature in the sludge, which is beneficial for the anoxic denitrification reaction (20–35°C) within the sedimentation tank 8, reducing the risk of ammonia nitrogen exceeding standards under low-temperature conditions. Returning sludge can increase the wastewater temperature in the aerobic tank 2, improving the activity of the aerobic sludge. A temperature sensor can be used to monitor the temperature inside the thermally conductive sedimentation tank 8 to prevent overheating.

[0026] The electrocatalytic advanced oxidation treatment tank 3 is an insulated and heat-insulated tank. Specifically, the main body of the electrocatalytic advanced oxidation treatment tank 3 is a metal tank body, with an insulating layer on the inner wall and a heat-insulating layer on the outside to achieve heat preservation and insulation. The heat-conducting sedimentation cylinder 8 is an insulated cylinder, which can be made of modified heat-conducting nylon. The electrocatalytic advanced oxidation treatment tank 3 and the heat-conducting sedimentation cylinder 8 are made of insulating materials to prevent leakage. The electrode plate assembly includes multiple vertical cathode plates 12 and multiple vertical anode plates 13. The cathode plates 12 and anode plates 13 are alternately arranged between the inner wall of the electrocatalytic advanced oxidation treatment tank 3 and the outer wall of the heat-conducting sedimentation cylinder 8, and the width direction of the cathode plates 12 and anode plates 13 is consistent with the radial direction of the heat-conducting sedimentation cylinder 8, so that any side of the cathode plate and anode plate is opposite to each other, which increases the contact area between the electrode plate and the sewage, reduces the water-to-plate ratio of the electrocatalytic oxidation reaction, and allows a higher current to pass through at the same current density, thus improving the sewage treatment efficiency. The cathode plates 12 and anode plates 13 are connected to a DC power supply. When wastewater flows between adjacent cathode plates 12 and anode plates 13, it can be fully treated without any dead zones in the reaction.

[0027] The bottom of the equalization tank 1, aerobic tank 2, and electrocatalytic advanced oxidation treatment tank 3 are all equipped with gas distribution mechanisms 14. Gas collecting pipe 4 is connected to the gas distribution mechanism 14 of the electrocatalytic advanced oxidation treatment tank 3, and gas supply pipe 6 is connected to the gas distribution mechanism 14 of the equalization tank 1. The gas distribution mechanism 14 can employ commonly used aeration devices such as aeration discs, allowing gas to be dispersed and introduced into the equalization tank 1 and the electrocatalytic advanced oxidation treatment tank 3. The gas distribution mechanism 14 in the aerobic tank 2 is connected to an air supply mechanism that introduces outside air.

[0028] A stabilizing cylinder 15 is located at the center of the equalization tank 1. An inlet pipe 16 is connected to the bottom of the stabilizing cylinder 15 for introducing wastewater. After entering the stabilizing cylinder 15, the wastewater flows upwards and then overflows from the top of the stabilizing cylinder 15 into the equalization tank 1. The wastewater in the equalization tank 1 overflows from its upper part into the aerobic tank 2, and the wastewater in the aerobic tank 2 overflows from its upper part into the electrocatalytic advanced oxidation treatment tank 3.

[0029] The equalization tank 1, aerobic tank 2, and electrocatalytic advanced oxidation treatment tank 3 are all connected to pressure gauges 17 and pressure regulating valves 18. Pressure gauges 17 monitor the gas pressure inside these three tanks. Pressure regulating valves 18 are one-way valves, allowing outside air to enter these tanks while preventing gas from escaping. When the gas pressure inside these tanks is low, air is added through pressure regulating valves 18 to balance the pressure and increase oxygen levels.

[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A wastewater treatment system containing antibiotics and resistance genes, comprising an equalization tank (1), an aerobic tank (2), and an electrocatalytic advanced oxidation treatment tank (3) connected in sequence, wherein the electrocatalytic advanced oxidation treatment tank (3) is equipped with an electrode plate assembly; characterized in that: The upper ports of the regulating tank (1), aerobic tank (2) and electrocatalytic advanced oxidation treatment tank (3) are all sealed. The top of the inner cavity of the regulating tank (1) and aerobic tank (2) is connected to a gas collecting pipe (4). The gas collecting pipe (4) is connected to the bottom of the inner cavity of the electrocatalytic advanced oxidation treatment tank (3), and a first gas driving mechanism (5) is provided on the gas collecting pipe (4). The top of the inner cavity of the electrocatalytic advanced oxidation treatment tank (3) is connected to a gas supply pipe (6), which is connected to the bottom of the inner cavity of the regulating tank (1), and a second gas driving mechanism (7) is provided on the gas supply pipe (6).

2. The wastewater treatment system containing antibiotics and resistance genes as described in claim 1, characterized in that: The electrocatalytic advanced oxidation treatment tank (3) has a vertical heat-conducting sedimentation cylinder (8) at its center. The aerobic tank (2) is connected to the bottom of the heat-conducting sedimentation cylinder (8) through a water supply pipe (9). The bottom of the heat-conducting sedimentation cylinder (8) is connected to the bottom of the aerobic tank (2) through a return pipe (10). A sludge pump (11) is installed on the return pipe (10).

3. The wastewater treatment system containing antibiotics and resistance genes as described in claim 2, characterized in that: The electrocatalytic advanced oxidation treatment tank (3) is an insulated and heat-insulated tank, and the heat-conducting precipitation cylinder (8) is an insulated cylinder. The electrode plate assembly includes multiple vertical cathode plates (12) and multiple vertical anode plates (13). The cathode plates (12) and anode plates (13) are alternately arranged between the inner wall of the electrocatalytic advanced oxidation treatment tank (3) and the outer wall of the heat-conducting precipitation cylinder (8). The width direction of the cathode plates (12) and anode plates (13) is consistent with the radial direction of the heat-conducting precipitation cylinder (8). The cathode plates (12) and anode plates (13) are connected to a DC power supply.

4. The wastewater treatment system containing antibiotics and resistance genes as described in claim 1, characterized in that: The bottom of the regulating tank (1), the aerobic tank (2) and the electrocatalytic advanced oxidation treatment tank (3) are all equipped with a gas distribution mechanism (14). The gas collection pipe (4) is connected to the gas distribution mechanism (14) of the electrocatalytic advanced oxidation treatment tank (3), and the gas transmission pipe (6) is connected to the gas distribution mechanism (14) of the regulating tank (1).

5. The wastewater treatment system containing antibiotics and resistance genes as described in claim 1, characterized in that: The regulating tank (1) has a stabilizing cylinder (15) at its center, and the bottom of the stabilizing cylinder (15) is connected to a water inlet pipe (16).

6. The wastewater treatment system containing antibiotics and resistance genes as described in claim 1, characterized in that: The equalization tank (1), aerobic tank (2) and electrocatalytic advanced oxidation treatment tank (3) are all connected to pressure gauges (17) and pressure regulating valves (18).

7. The wastewater treatment system containing antibiotics and resistance genes as described in claim 1, characterized in that: The top of the inner cavity of the electrocatalytic advanced oxidation treatment tank (3) is connected to an exhaust pipe (19).

8. The wastewater treatment system containing antibiotics and resistance genes as described in claim 1, characterized in that: Wastewater is fed into equalization tank (1), and the wastewater in equalization tank (1) is uniformly transported to aerobic tank (2). After aerobic microbial treatment, the wastewater is fed into electrocatalytic advanced oxidation treatment tank (3). Persulfate is added through dosing device (20). Under the catalytic action of electrode plate assembly, persulfate generates highly oxidizing free radicals, which decompose the organic pollutants in the wastewater and kill pathogenic microorganisms. The gas escaping from the conditioning tank (1) and the aerobic tank (2) is transported to the electrocatalytic advanced oxidation treatment tank (3) through the gas collection pipe (4). The gas flows upward in the electrocatalytic advanced oxidation treatment tank (3), flushing the electrode plate assembly, removing the sludge on the surface of the electrode plate assembly and carrying away the bubbles generated by the electrocatalytic reaction and attached to the surface of the electrode plate. In addition, harmful components and bacteria in the gas are eliminated and removed, and the heat generated by the electrode plate assembly heats the gas. The gas escaping from the electrocatalytic advanced oxidation treatment tank (3) returns to the equalization tank (1) through the gas transmission pipe (6) and flows upward in the equalization tank (1), carrying away some of the volatile harmful substances in the wastewater, reducing the aerobic treatment burden, increasing the oxygen content of the wastewater, and at the same time, the heat of the gas is transferred to the wastewater, increasing the temperature of the wastewater.

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