Series ozone catalytic oxidation sewage treatment system

Abstract

The application provides a series type ozone catalytic oxidation sewage treatment system and relates to the technical field of sewage treatment.The series type ozone catalytic oxidation sewage treatment system comprises a treatment assembly, an aeration assembly, an intermediate assembly, an injection assembly, a lifting assembly, a knocking assembly and a squeezing assembly.The treatment assembly comprises a lower shell, the upper part of the lower shell is detachably connected with an upper shell, the lower part of the upper shell is fixedly connected with a partition plate, a sewage pipeline is arranged on the lower shell, and an air pressure gauge is arranged on the upper part of the lower shell.The aeration assembly is arranged at the bottom of the lower shell and is used for injecting ozone gas.The intermediate assembly is arranged outside the treatment assembly and is used for temporarily storing high-pressure ozone.The lifting assembly and the knocking assembly are arranged, the knocking assembly is driven by ozone gas pressure to knock the aeration disc, impurities adhered to the aeration disc are shaken off and are taken away by ozone gas, and the aeration disc is prevented from being blocked due to impurity accumulation.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a series ozone catalytic oxidation wastewater treatment system. Background Technology

[0002] Ozone catalytic oxidation is a commonly used method in wastewater treatment. This process involves injecting ozone into the wastewater to be treated, thereby generating hydroxyl radicals to achieve the efficient degradation of organic matter.

[0003] In related technologies, such as the series-connected ozone catalytic oxidation wastewater treatment system with announcement number CN219449458U, there is a wastewater tank. The bottom of a connecting pipe is fixedly connected to the wastewater tank, and a hollow frame is connected above the connecting pipe. A fixed frame is fixedly connected to the top of the wastewater tank, and a motor is fixedly connected to the top of the fixed frame. A threaded shaft is fixedly connected to the end of the motor's main shaft, and a threaded sleeve is spirally connected to the outside of the threaded shaft. A connecting frame is fixedly connected to the bottom of the threaded sleeve, and an ozone storage component is connected to the bottom of the connecting frame. This treatment system can re-inject unreacted ozone into the wastewater to improve the utilization rate of ozone.

[0004] When ozone is injected into wastewater, it usually requires the use of titanium alloy aeration discs. The aeration discs can disperse the ozone and improve the solubility of ozone in wastewater. However, titanium alloy aeration discs are usually fixed upwards, and impurities in the wastewater can easily fall onto the titanium alloy aeration discs. Over time, this can cause the air holes of the titanium alloy aeration discs to become blocked, thereby affecting gas release and hindering the improvement of wastewater treatment efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a series ozone catalytic oxidation wastewater treatment system, which solves the problem that the pores of titanium alloy aeration discs are easily clogged in existing wastewater treatment systems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a series-connected ozone catalytic oxidation wastewater treatment system, comprising:

[0007] The processing assembly includes a lower housing, an upper housing detachably connected to the upper part of the lower housing, a partition plate fixedly connected to the lower part of the upper housing, a sewage pipe provided on the lower housing, and a pressure gauge installed on the upper part of the lower housing.

[0008] An aeration assembly, located at the bottom of the lower housing, is used to inject ozone gas;

[0009] An intermediate component, located outside the processing component, is used for temporary storage of high-pressure ozone;

[0010] An injection component, located below the intermediate component, is used to re-inject high-pressure ozone into the aeration component.

[0011] A lifting assembly, located on the upper part of the lower housing, is used to be pushed up by air pressure and then lowered.

[0012] A striking component is located above the aeration component and is driven by the lifting component to strike the aeration component.

[0013] The squeezing component, located below the aeration component, is used to squeeze the wastewater at the bottom of the lower shell. Through the included lifting and striking components, ozone gas pressure drives the striking component to strike the aeration discs, causing impurities attached to the discs to be shaken off and carried away by the ozone gas, preventing blockage due to impurity accumulation. The included intermediate and injection components store high-pressure ozone gas, and the injection component re-injects underutilized ozone into the wastewater, improving ozone utilization efficiency and saving ozone usage. The squeezing component lifts impurities at the bottom, which are then flushed away by the ozone gas, preventing impurity accumulation at the bottom and preventing impurities from adhering to the aeration discs at the source. Furthermore, the ozone gas on the outer side is discharged in a spiral shape from the center.

[0014] Preferably, the aeration assembly includes a venting shell, which is fixedly connected to the lower shell via a connecting plate. An aeration disc is installed at the lower part of the venting shell, and a support rod is fixedly connected to the upper part of the aeration disc. A guide tube is fixedly connected to the upper part of the support rod. The venting shell is annular, and the guide tube is coaxially arranged with the venting shell.

[0015] Preferably, the intermediate component includes a telescopic tube, the lower end of which passes through a partition plate, and the upper end of which is connected to a storage tank via an intermediate tube, and a safety valve is installed on the intermediate tube.

[0016] Preferably, the injection assembly includes an air pump, the air pump's suction end is connected to the storage tank via an injection pipe, the air pump's outlet end is connected to the aeration assembly via an injection pipe, a control valve is installed on the upper injection pipe, an ozone inlet pipe is installed on the lower injection pipe, and a one-way valve is installed on the lower injection pipe between the ozone inlet pipe and the air pump.

[0017] Preferably, the striking assembly includes a support arm, a striking arm rotatably connected to the upper part of the support arm, a striking ball fixedly connected to the outer end of the striking arm, and a swinging element provided on the outer side of the striking ball; the swinging element includes an elastic part, a swinging part fixedly connected to the upper part of the elastic part, the support arm is fixedly connected to the vent shell, the swinging element is fixedly connected to the aeration disc, and the striking ball can strike the swinging part.

[0018] Preferably, the lifting assembly includes a lifting plate slidably installed inside the lower housing. A sealing ring is provided on the circumferential surface of the lifting plate. An annular air inlet is provided at the lower part of the lifting plate. A central hole is provided at the center of the lifting plate. The air inlet and the central hole are interconnected. The central hole is interconnected with the intermediate assembly. Lifting springs are uniformly installed circumferentially between the lifting plate and the partition plate. A lifting rod is fixedly connected to the middle part of the lifting plate. A lifting plate is fixedly connected to the lower part of the lifting rod.

[0019] Preferably, the extrusion assembly includes an extrusion plate, on which guide plates are uniformly fixedly connected around the circumference of the extrusion plate. The cross-sectional shape of the guide plates is arc-shaped, and a guide channel is formed between two adjacent guide plates. The center of the extrusion plate is fixedly connected to the lower end of the lifting rod.

[0020] Preferably, the guide channel is positioned to correspond to the aeration disc of the aeration component, and the extrusion plate is convex upwards.

[0021] This invention provides a series-connected ozone catalytic oxidation wastewater treatment system. It has the following beneficial effects:

[0022] 1. The present invention, through the setting of lifting components and striking components, can use ozone gas pressure to drive the striking components to strike the aeration disc, so that the impurities attached to the aeration disc are shaken away and carried away by ozone gas, thus avoiding the aeration disc from being blocked due to the accumulation of impurities.

[0023] 2. The present invention can store high-pressure ozone gas through the intermediate component and the injection component, and use the injection component to re-inject the underutilized ozone into the sewage, thereby improving the ozone utilization efficiency and saving ozone usage.

[0024] 3. The present invention, through the extrusion component, can lift the impurities at the bottom by the sewage and flush them up under the action of ozone gas, thus preventing the accumulation of impurities at the bottom and preventing impurities from adhering to the aeration disc from the source. It can also discharge the ozone gas on the outside in a spiral shape from the center. Attached Figure Description

[0025] Figure 1 This is an overall perspective view of the present invention;

[0026] Figure 2 This is an overall sectional view of the present invention;

[0027] Figure 3 This is a cross-sectional front view of the entire invention;

[0028] Figure 4 This is a split perspective view of the lifting assembly and the pressing assembly of the present invention;

[0029] Figure 5 This is a perspective view of the extrusion assembly of the present invention;

[0030] Figure 6 This is a perspective view of the striking component and aeration component of the present invention;

[0031] Figure 7 This is a perspective view of the striking component of the present invention;

[0032] Figure 8 This is a perspective view of the extrusion assembly of the present invention in its raised state.

[0033] The components include: 1. Treatment component; 2. Intermediate component; 3. Injection component; 4. Impact component; 5. Extrusion component; 6. Aeration component; 7. Lifting component; 101. Upper shell; 102. Lower shell; 103. Divider plate; 104. Sewage pipe; 105. Pressure gauge; 201. Intermediate pipe; 202. Storage tank; 203. Safety valve; 204. Telescopic pipe; 301. Air pump; 302. Injection pipe; 303. Control valve; 304. Check valve; 305. Ozone inlet pipe; 701. 702. Lifting plate; 703. Sealing ring; 704. Air inlet; 705. Center hole; 706. Lifting rod; 707. Lifting plate; 508. Lifting spring; 509. Extrusion plate; 5000. Guide plate; 501. Guide channel; 402. Swinging component; 403. Striking ball; 404. Support arm; 405. Striking arm; 4011. Elastic part; 4012. Swinging part; 601. Connecting plate; 602. Ventilation shell; 603. Support rod; 604. Guide cylinder; 605. Aeration disc. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] like Figures 1-8 As shown, an embodiment of the present invention provides a series ozone catalytic oxidation wastewater treatment system, comprising:

[0036] Processing component 1 includes a lower housing 102, an upper housing 101 is detachably connected to the upper part of the lower housing 102, a partition plate 103 is fixedly connected to the lower part of the upper housing 101, a sewage pipe 104 is provided on the lower housing 102, and a pressure gauge 105 is installed on the upper part of the lower housing 102.

[0037] refer to Figure 1 , Figure 2The upper housing 101 and the partition plate 103 are in the shape of a hemispherical shell, which can withstand greater air pressure and ensure good overall safety. The lower housing 102 is a columnar shell, which provides the necessary space for sewage treatment and can withstand the necessary water and air pressure. The pressure gauge 105 is used to detect the air pressure value inside the lower housing 102 to avoid danger caused by excessive air pressure. The upper housing 101 and the lower housing 102 are connected by flanges and bolts and nuts to ensure good sealing of the connection between the upper housing 101 and the lower housing 102. There are two sewage pipes 104, one for injecting sewage and the other for discharging sewage. In order to avoid excessive sewage injection, a liquid level sensor can be installed in the lower housing 102.

[0038] An aeration component 6 is located at the bottom of the lower housing 102 and is used to inject ozone gas. The aeration component 6 includes a ventilation shell 602, which is fixedly connected to the lower housing 102 via a connecting plate 601. An aeration disc 605 is installed at the lower part of the ventilation shell 602, and a support rod 603 is fixedly connected to the upper part of the aeration disc 605. A guide tube 604 is fixedly connected to the upper part of the support rod 603. The ventilation shell 602 is annular, and the guide tube 604 is coaxially arranged with the ventilation shell 602.

[0039] refer to Figure 2 , Figure 3 , Figure 6 The vent shell 602 is used for ozone entry, ensuring that ozone can enter multiple aeration discs 605. The aeration discs 605 can be made of titanium alloy to avoid ozone corrosion. The aeration discs 605 are existing products that can disperse ozone into tiny airflows. The aeration discs 605 are set downwards, so that the ozone gas can be discharged downwards first and then move upwards, making the ozone's trajectory in the sewage longer, allowing the ozone and sewage to mix fully and better catalytically oxidize and treat the sewage. The guide cylinder 604 has a through hole in the center for the lifting rod 705 to pass through, ensuring the stability and smoothness of the lifting rod 705 when it rises or falls.

[0040] Intermediate component 2 is located outside the processing component 1 and is used for temporary storage of high-pressure ozone. Intermediate component 2 includes a telescopic tube 204, the lower end of which passes through the partition plate 103, and the upper end of which is connected to the storage tank 202 via an intermediate tube 201. A safety valve 203 is installed on the intermediate tube 201.

[0041] refer to Figure 3Safety valve 203 is used to stop the flow of low-pressure ozone and release high-pressure ozone; telescopic pipe 204 can be a corrosion-resistant corrugated pipe, which can move synchronously with the rise or fall of lifting component 7; storage tank 202 is used to store the discharged ozone, which can be reused or not, providing an ozone source for the next sewage treatment; safety valve 203 is an adjustable safety valve, which can adjust its gas pressure release threshold.

[0042] Injection component 3 is located below intermediate component 2 and is used to re-inject high-pressure ozone into aeration component 6. Injection component 3 includes air pump 301. The air pump 301's suction end is connected to storage tank 202 through injection pipe 302, and the air pump 301's outlet end is connected to aeration component 6 through injection pipe 302. A control valve 303 is installed on the upper injection pipe 302, and an ozone inlet pipe 305 is installed on the lower injection pipe 302. A one-way valve 304 is installed on the lower injection pipe 302 and located between the ozone inlet pipe 305 and air pump 301.

[0043] refer to Figure 3 The control valve 303 can open the injection pipe 302 between the air pump 301 and the storage tank 202. The air pump 301 can extract ozone from the storage tank 202 and then inject it into the vent housing 602 of the aeration assembly 6 through the lower injection pipe 302 and the one-way valve 304. This can re-inject the unused ozone in the storage tank 202 into the sewage, thereby saving ozone usage. The one-way valve 304 is used to prevent ozone in the ozone inlet pipe 305 from entering the lower injection pipe 302, ensuring a stable ozone flow.

[0044] The lifting assembly 7 is located on the upper part of the lower housing 102 and is used to rise and fall by air pressure. The lifting assembly 7 includes a lifting plate 701 slidably installed inside the lower housing 102. A sealing ring 702 is provided on the circumferential surface of the lifting plate 701. An annular air inlet 703 is provided at the lower part of the lifting plate 701. A central hole 704 is provided at the center of the lifting plate 701. The air inlet 703 and the central hole 704 are interconnected. The central hole 704 is interconnected with the intermediate assembly 2. Lifting springs 707 are evenly installed on the circumference between the lifting plate 701 and the partition plate 103. A lifting rod 705 is fixedly connected to the middle part of the lifting plate 701. A lifting plate 706 is fixedly connected to the lower part of the lifting rod 705.

[0045] refer to Figure 3 , Figure 4As the ozone emission increases, the air pressure on the lower side of the lifting plate 701 increases. When the air pressure exceeds the elastic force of the lifting spring 707, the lifting plate 701 will overcome the elastic force of the lifting spring 707 and move upward, thereby synchronously driving the lifting rod 705, lifting plate 706, and telescopic tube 204 to move. The lifting spring 707 and telescopic tube 204 ensure the stability of the movement of the lifting plate 701. The air inlet 703 is annular, which allows the air pressure to be evenly applied to the lifting plate 701, ensuring that the lifting plate 701 is subjected to uniform force. When high-pressure ozone is released from the safety valve 203 into the storage tank 202, the elastic force of the lifting spring 707 is greater than the air pressure, thereby causing the lifting plate 701 to move downward and reset, thereby driving the lifting rod 705, lifting plate 706, and telescopic tube 204 to move synchronously.

[0046] A striking component 4 is located above the aeration component 6 and is driven by the lifting component 7 to strike the aeration component 6. The striking component 4 includes a support arm 403, a striking arm 404 is rotatably connected to the upper part of the support arm 403, a striking ball 402 is fixedly connected to the outer end of the striking arm 404, and a swinging member 401 is provided on the outer side of the striking ball 402. The swinging member 401 includes an elastic part 4011, a swinging part 4012 is fixedly connected to the upper part of the elastic part 4011, the support arm 403 is fixedly connected to the vent shell 602, the swinging member 401 is fixedly connected to the aeration disc 605, and the striking ball 402 can strike the swinging part 4012.

[0047] refer to Figure 6 As the lifting plate 706 above the striking arm 404 moves upward, the weight of the striking ball 402 is greater than the weight of the other end of the striking arm 404. Under the action of gravity, the striking ball 402 will rotate away from the swing member 401 with the connection between the support arm 403 and the striking arm 404 as the center. Then, when the air pressure disappears, the lifting plate 706 moves down to reset and collide with the raised end of the striking arm 404. Using the lever principle, the striking ball 402 is pried up. The striking ball 402 collides with the swing part 4012 of the swing member 401. Since the elastic part 4011 has elasticity, the swing part 4012 will vibrate. The vibration force will be transmitted to the aeration disc 605, which will loosen the impurities attached to the surface of the aeration disc 605 and then be carried away by the ozone gas, avoiding the accumulation of impurities that block the through holes of the aeration disc 605.

[0048] The squeezing component 5 is located below the aeration component 6 and is used to squeeze the sewage at the bottom of the lower shell 102. The squeezing component 5 includes a squeezing plate 501, on which guide plates 502 are uniformly fixedly connected around the circumference. The cross-sectional shape of the guide plates 502 is arc-shaped, and a guide channel 503 is formed between two adjacent guide plates 502. The center of the squeezing plate 501 is fixedly connected to the lower end of the lifting rod 705. The position of the guide channel 503 corresponds to the aeration disc 605 of the aeration component 6. The squeezing plate 501 is convex upward.

[0049] refer to Figure 5 , Figure 4 , Figure 8 When the squeezing plate 501 is driven upward by the lifting rod 705, it will approach the aeration disc 605. The ozone generated in the inner ring of the aeration disc 605 will be blocked by the guide plate 502 and then flow towards the center from the guide channel 503, forming a spiral upward movement, disturbing the sewage and increasing the trajectory time of ozone in the sewage. When the squeezing plate 501 is driven downward by the lifting rod 705, the sewage below the squeezing plate 501 will be squeezed outwards, and the impurities at the bottom of the lower shell 102 will be carried up by the water flow. The impurities will be carried upward by the airflow generated in the outer ring of the aeration disc 605, thereby preventing impurities from accumulating at the bottom of the lower shell 102, reducing the amount of impurities falling on the aeration disc 605, and also helping to loosen the impurities by tapping the aeration disc 605.

[0050] Working principle: When in use, the sewage to be treated enters from the sewage pipe 104, and then the external ozone source enters the ventilation shell 602 from the ozone inlet pipe 305, and then enters the aeration disc 605. It is discharged into the sewage from the aeration holes of the aeration disc 605 to carry out catalytic oxidation treatment of the sewage.

[0051] As the amount of ozone released increases, the amount of unused ozone also increases simultaneously, thereby increasing the air pressure value under the lifting plate 701. When the air pressure is greater than the elastic force of the lifting spring 707, the lifting plate 701 will overcome the elastic force of the lifting spring 707 and move upward, thereby simultaneously driving the lifting rod 705, the lifting plate 706, and the telescopic tube 204 to move.

[0052] As the lifting plate 706 located above the striking arm 404 moves upward, the weight of the striking ball 402 is greater than the weight of the other end of the striking arm 404. Under the action of gravity, the striking ball 402 will rotate away from the swing member 401 with the connection between the support arm 403 and the striking arm 404 as the center.

[0053] When high-pressure ozone is released from safety valve 203 into storage tank 202, the elastic force of lifting spring 707 is greater than the air pressure, which causes lifting plate 701 to move down and reset, thereby driving lifting rod 705, lifting plate 706 and telescopic tube 204 to move synchronously.

[0054] When the extrusion plate 501 is driven upward by the lifting rod 705, the extrusion plate 501 will approach the aeration disc 605. The ozone generated in the inner ring of the aeration disc 605 will be blocked by the guide plate 502, and then flow from the guide channel 503 to the center, forming a spiral upward movement, disturbing the sewage and increasing the trajectory time of ozone in the sewage.

[0055] Then, when the air pressure disappears, the lifting plate 706 moves down to reset and collide with the raised end of the striking arm 404. Using the lever principle, the striking ball 402 is pried up. The striking ball 402 collides with the swing part 4012 of the swing member 401. Since the elastic part 4011 has elasticity, the swing part 4012 will vibrate. The vibration force will be transmitted to the aeration disc 605, which will loosen the impurities attached to the surface of the aeration disc 605 and then be carried away by the ozone gas, thus preventing the accumulation of impurities and blockage of the through holes of the aeration disc 605.

[0056] When the extrusion plate 501 is driven down by the lifting rod 705, the sewage below the extrusion plate 501 will be squeezed outwards and outwards, and the impurities at the bottom of the lower shell 102 will be carried up by the water flow. The impurities will be carried upwards by the airflow generated by the outer ring of the aeration disc 605, thereby preventing impurities from accumulating at the bottom of the lower shell 102, reducing the amount of impurities falling on the aeration disc 605, and also helping to loosen the impurities by tapping the aeration disc 605.

[0057] If the ozone in the storage tank 202 needs to be reused, the air pump 301 can extract the ozone in the storage tank 202 and then inject it into the venting shell 602 of the aeration component 6 through the injection pipe 302 on the lower side and the one-way valve 304. This can re-inject the unused ozone in the storage tank 202 into the sewage, thereby saving ozone usage.

[0058] Once the wastewater has been treated, it can be discharged.

[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A series-connected ozone catalytic oxidation wastewater treatment system, characterized in that, include: The processing component (1) includes a lower housing (102), an upper housing (101) is detachably connected to the upper part of the lower housing (102), a partition plate (103) is fixedly connected to the lower part of the upper housing (101), a sewage pipe (104) is provided on the lower housing (102), and a pressure gauge (105) is installed on the upper part of the lower housing (102). An aeration assembly (6) is located at the bottom of the lower housing (102) and is used to inject ozone gas. The aeration assembly (6) includes a ventilation shell (602), which is fixedly connected to the lower housing (102) via a connecting plate (601). An aeration disc (605) is installed at the lower part of the ventilation shell (602), and a support rod (603) is fixedly connected to the upper part of the aeration disc (605). A guide tube (604) is fixedly connected to the upper part of the support rod (603). The ventilation shell (602) is circular, and the guide tube (604) is coaxially arranged with the ventilation shell (602). Intermediate component (2), which is located outside the processing component (1) and is used for temporary storage of high-pressure ozone; Injection component (3), which is located below the intermediate component (2), is used to re-inject high-pressure ozone into the aeration component (6); A lifting assembly (7) is located on the upper part of the lower housing (102) and is used to rise and fall by air pressure. The lifting assembly (7) includes a lifting plate (701) that is slidably installed inside the lower housing (102). A sealing ring (702) is provided on the circumferential surface of the lifting plate (701). An annular air inlet (703) is provided at the lower part of the lifting plate (701). A central hole (704) is provided at the center of the lifting plate (701). The air inlet (703) and the central hole (704) are interconnected. The central hole (704) is interconnected with the intermediate assembly (2). Lifting springs (707) are evenly installed on the circumference between the lifting plate (701) and the partition plate (103). A lifting rod (705) is fixedly connected to the middle part of the lifting plate (701). A lifting plate (706) is fixedly connected to the lower part of the lifting rod (705). A striking component (4) is located above the aeration component (6) and is driven by the lifting component (7) to strike the aeration component (6). The striking component (4) includes a support arm (403), a striking arm (404) is rotatably connected to the upper part of the support arm (403), a striking ball (402) is fixedly connected to the outer end of the striking arm (404), and a swinging element (401) is provided on the outer side of the striking ball (402). The swinging element (401) includes an elastic part (4011), a swinging part (4012) is fixedly connected to the upper part of the elastic part (4011), the support arm (403) is fixedly connected to the vent shell (602), the swinging element (401) is fixedly connected to the aeration disc (605), and the striking ball (402) can strike the swinging part (4012). The squeezing component (5) is located below the aeration component (6) and is used to squeeze the sewage at the bottom of the lower shell (102).

2. The series-connected ozone catalytic oxidation wastewater treatment system according to claim 1, characterized in that: The intermediate component (2) includes a telescopic tube (204), the lower end of which passes through a partition plate (103), and the upper end of which is connected to a storage tank (202) via an intermediate tube (201). A safety valve (203) is installed on the intermediate tube (201).

3. The series-connected ozone catalytic oxidation wastewater treatment system according to claim 2, characterized in that: The injection assembly (3) includes an air pump (301). The air pump (301) has its suction end connected to the storage tank (202) via an injection pipe (302). The air pump (301) has its outlet end connected to the aeration assembly (6) via an injection pipe (302). A control valve (303) is installed on the upper side of the injection pipe (302). An ozone inlet pipe (305) is installed on the lower side of the injection pipe (302). A one-way valve (304) is installed on the lower side of the injection pipe (302) between the ozone inlet pipe (305) and the air pump (301).

4. The series-connected ozone catalytic oxidation wastewater treatment system according to claim 1, characterized in that: The extrusion assembly (5) includes an extrusion plate (501), on which guide plates (502) are uniformly fixedly connected around the circumference. The cross-sectional shape of the guide plate (502) is arc-shaped, and a guide channel (503) is formed between two adjacent guide plates (502). The center of the extrusion plate (501) is fixedly connected to the lower end of the lifting rod (705).

5. The series-connected ozone catalytic oxidation wastewater treatment system according to claim 4, characterized in that: The position of the guide channel (503) corresponds to the aeration disc (605) of the aeration component (6), and the extrusion plate (501) is convex upward.

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