High-reaction-rate ozone oxidation device for removing COD (Chemical Oxygen Demand) in wastewater

Abstract

The utility model relates to an ozone oxidation device, in particular to a high-reaction-rate ozone oxidation device for removing COD (Chemical Oxygen Demand) in wastewater, which comprises a preparation box body, a generation chamber is fixedly mounted in the preparation box body; a buffer tank is arranged on the preparation box body; a microbubble pipeline, a water inlet pipeline and a water drainage pipeline are fixedly mounted on the buffer tank; valve bodies are fixedly mounted on the microbubble pipeline and the water inlet pipeline; a plurality of groups of sealing plates matched with one another are rotationally mounted on the valve body; a synchronous opening and closing structure is arranged on the valve body; air holes are formed in the preparation box body; a plurality of groups of baffles matched with the air holes are rotationally mounted on the preparation box body; an exhaust structure and a conduction structure are arranged on the preparation box body; when the exhaust structure acts, the outward flowing speed of air in the preparation box body can be increased; the driving mechanism can drive the conduction structure to act so as to drive the baffle to rotate, so that the vent hole is conducted; and through mutual cooperation of the exhaust structure and the conduction structure, the ozone content in the preparation box body can be efficiently reduced, and dangerous accidents are avoided.

Description

Technical Field

[0001] This utility model relates to an ozone oxidation device, specifically a high-reactivity ozone oxidation device for removing COD from wastewater. Background Technology

[0002] COD (Chemical Oxygen Demand) refers to the amount of oxygen equivalent consumed by a chemical reaction to oxidize reducing inorganic and organic matter (usually organic matter) in a water sample. It is a crucial indicator for assessing water pollution levels. In studies of river pollution and industrial wastewater characteristics, as well as in the operation and management of wastewater treatment plants, it is an important and relatively quick-to-measure parameter for organic pollution. Ozone oxidation reactors are commonly used in wastewater treatment for COD removal.

[0003] A common ozone oxidation reactor includes a preparation chamber, a generation chamber, a microbubble generating tube, and a mixing buffer tank. The generation chamber is located inside the preparation chamber. Oxygen is converted into ozone through high-frequency high-voltage discharge, and then transported to the microbubble generating tube to form micro-nano bubbles. The ozone is then continuously transported to the buffer tank, while wastewater also enters through the inlet of the buffer tank. The gas and liquid are mixed in the buffer tank to increase the contact time between ozone and organic matter, thereby improving the COD removal efficiency.

[0004] Because ozone has strong oxidizing properties and readily converts into oxygen, the airtightness of the generation chamber is extremely important. To prevent accidents, sensors are often installed in the preparation chamber to detect ozone or oxygen concentrations. If the concentration exceeds the limit, exhaust ventilation is initiated to eliminate potential hazards. Common exhaust methods include exhaust fans.

[0005] The preparation chamber has normally closed vent holes. When the exhaust fan is used for exhaust operation, the vent holes are opened to assist in exhaust. However, since the opening and closing of the vent holes are controlled separately and are not directly related to the exhaust fan, it is easy for the exhaust fan to work but the vent holes to not be open, resulting in ozone not being discharged and the danger not being eliminated. Alternatively, it is easy for the exhaust fan to not work but the vent holes to be open, which causes the atmospheric air composition sensor to interfere with the sensor's operation and makes it difficult to perform the exhaust operation correctly. Utility Model Content

[0006] The purpose of this invention is to provide a high-reactivity ozone oxidation device for removing COD from wastewater, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A high-reactivity ozone oxidation device for removing COD from wastewater includes a preparation chamber;

[0009] The preparation chamber is fixedly installed inside the preparation chamber; a buffer tank is provided on the preparation chamber; microbubble pipes, water inlet pipes and drainage pipes are fixedly installed on the buffer tank;

[0010] A valve body is fixedly installed on both the microbubble pipeline and the water inlet pipeline; multiple sets of mutually cooperating sealing plates are rotatably installed on the valve body; the generating chamber and the microbubble pipeline are connected through the valve body; the water inlet pipeline and the sewage pipeline are connected through the valve body.

[0011] The valve body is provided with a synchronous opening and closing structure; the synchronous opening and closing structure can drive multiple sets of sealing plates to rotate, so as to synchronously control the conduction state of the two valve bodies;

[0012] The preparation chamber is provided with ventilation holes; multiple sets of baffles that cooperate with the ventilation holes are rotatably installed on the preparation chamber.

[0013] The preparation chamber is provided with an exhaust structure and a conduction structure; when the exhaust structure is activated, it can accelerate the outward flow of air inside the preparation chamber; and it can drive the conduction structure to rotate the baffle, thereby opening the vent.

[0014] The high-reactivity ozone oxidation device for removing COD from wastewater as described above includes: an exhaust structure comprising a mounting frame fixedly installed inside the preparation chamber; an exhaust motor fixedly installed on the mounting frame; a rotating shaft rotatably connected to the mounting frame fixedly installed on the output end of the exhaust motor; and multiple sets of equidistantly distributed fan blades fixedly installed circumferentially on the rotating shaft.

[0015] The high-reactivity ozone oxidation device for removing COD from wastewater as described above includes: a fixed block fixedly mounted on the rotating shaft; multiple sets of centrifugal blocks slidably fitted onto the fixed block; a telescopic column fixedly mounted on the centrifugal blocks; a fixed column fixedly mounted on the preparation chamber; a movable sleeve sleeved on the fixed column; a telescopic sleeve slidably fitted onto the movable sleeve; a sliding sleeve slidably fitted onto the fixed column; a first inclined groove formed on the sliding sleeve; a rotating sleeve sleeved on the sliding sleeve; a protruding column slidably fitted onto the first inclined groove fixedly mounted inside the rotating sleeve; and multiple sets of baffles fixedly connected to the rotating sleeve and equidistantly distributed.

[0016] The high-reactivity ozone oxidation device for removing COD from wastewater as described above: a return spring is provided inside the rotating sleeve; the two ends of the return spring respectively abut against the rotating sleeve and the sliding sleeve.

[0017] The high-reactivity ozone oxidation device for removing COD from wastewater as described above includes a synchronous opening and closing structure comprising a turntable rotatably mounted on the valve body; a second inclined groove is provided on the turntable; and a protruding column that slides and engages with the second inclined groove is fixedly mounted on the sealing plate.

[0018] The high-reactivity ozone oxidation device for removing COD from wastewater as described above includes a connecting plate that is fixedly connected to both valve bodies; a control motor is fixedly installed on the connecting plate; a small gear is fixedly installed on the output end of the control motor; a large gear is fixedly installed on the turntable; and the small gear meshes with both large gears.

[0019] The high-reactivity ozone oxidation device for removing COD from wastewater as described above has multiple bends on its inlet pipe.

[0020] Compared with existing technologies, the advantages of this invention are: the centrifugal force generated by the exhaust structure's operation drives the conduction structure, enabling a rapid response after the exhaust structure's operation, avoiding slow exhaust due to independent driving, thus quickly eliminating safety hazards. A single drive source can simultaneously perform two functions, effectively reducing the device's energy consumption; the cooperation between the exhaust structure and the conduction structure efficiently reduces the ozone content within the preparation chamber, preventing dangerous accidents. Attached Figure Description

[0021] Figure 1 A schematic diagram of a high-reactivity ozone oxidation device for removing COD from wastewater.

[0022] Figure 2 A schematic diagram of the generation chamber in a high-reactivity ozone oxidation device for removing COD from wastewater.

[0023] Figure 3 A schematic diagram of the mounting frame in a high-reactivity ozone oxidation device for removing COD from wastewater.

[0024] Figure 4 A schematic diagram of the fan blades in a high-reactivity ozone oxidation device for removing COD from wastewater.

[0025] Figure 5 A schematic diagram of the moving sleeve in a high-reactivity ozone oxidation device for removing COD from wastewater.

[0026] Figure 6 for Figure 5 A schematic diagram of the structure at point A in the middle.

[0027] Figure 7 A schematic diagram of the sealing plate in a high-reactivity ozone oxidation device for removing COD from wastewater.

[0028] Figure 8 A schematic diagram of the second inclined tank in a high-reactivity ozone oxidation device for removing COD from wastewater.

[0029] In the diagram: 1. Preparation box; 101. Ventilation hole;

[0030] 2. Generating chamber;

[0031] 3. Buffer tank; 301. Microbubble pipeline; 302. Water inlet pipeline; 303. Drainage pipeline;

[0032] 4. Mounting bracket;

[0033] 5. Exhaust motor;

[0034] 6. Shaft;

[0035] 7. Fan blades;

[0036] 8. Fixing block;

[0037] 9. Centrifuge block; 901. Telescopic column;

[0038] 10. Moving sleeve; 1001. Telescopic sleeve;

[0039] 11. Sliding sleeve; 1101. First inclined groove;

[0040] 12. Return spring;

[0041] 13. Rotate the sleeve; 1301. Protruding post;

[0042] 14. Baffle;

[0043] 15. Valve body;

[0044] 16. Sealing plate; 1601. Protruding column;

[0045] 17. Turntable; 1701. Second inclined groove; 1702. Large gear;

[0046] 18. Control the motor;

[0047] 19. Small gear;

[0048] 20. Fixed column;

[0049] 21. Connecting plate. Detailed Implementation

[0050] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0051] Please see Figures 1-8 As one embodiment of this utility model, the high-reactivity ozone oxidation device for removing COD from wastewater includes a preparation chamber 1;

[0052] The preparation chamber 1 is fixedly installed with a generating chamber 2; a buffer tank 3 is provided on the preparation chamber 1; a microbubble pipe 301, a water inlet pipe 302 and a drain pipe 303 are fixedly installed on the buffer tank 3.

[0053] A valve body 15 is fixedly installed on both the microbubble pipeline 301 and the water inlet pipeline 302; multiple sets of mutually cooperating sealing plates 16 are rotatably installed on the valve body 15; the generating chamber 2 is connected to the microbubble pipeline 301 through the valve body 15; the water inlet pipeline 302 is connected to the sewage pipeline through the valve body 15.

[0054] The valve body 15 is provided with a synchronous opening and closing structure; the synchronous opening and closing structure can drive multiple sets of sealing plates 16 to rotate, so as to synchronously control the conduction state of the two valve bodies 15.

[0055] The preparation box 1 is provided with a vent 101; multiple sets of baffles 14 that cooperate with the vent 101 are rotatably installed on the preparation box 1.

[0056] The preparation chamber 1 is provided with an exhaust structure and a conduction structure; when the exhaust structure is activated, it can accelerate the outward flow of air inside the preparation chamber 1; and it can drive the conduction structure to rotate the baffle 14, thereby opening the vent 101.

[0057] In this embodiment, oxygen is continuously supplied to the generating chamber 2; some of the oxygen is converted into ozone through high-frequency high-voltage discharge, and the gas is discharged after temperature, pressure, and flow rate monitoring and adjustment. The ozone discharged from the generating chamber 2 is transported through a pipeline, passes through valve body 15, and then enters buffer tank 3 through microbubble pipeline 301; at the same time, wastewater in the sewage pipeline passes through valve body 15 and enters buffer tank 3 through inlet pipeline 302. By injecting ozone gas into the sewage and through the mixing and buffering effect of buffer tank 3, COD in the sewage can be efficiently removed.

[0058] After ozone enters the microbubble pipe 301, it will form micro-nano bubbles. As the ozone micro-nano bubbles rise in the wastewater, the bubble size will continuously decrease, thereby improving the ozone dissolution efficiency, the solubility and stability of ozone in water, and thus improving the oxidation efficiency of ozone, thereby improving the COD removal efficiency.

[0059] Normally, the baffle 14 and the vent 101 work together to seal the housing 1, thereby preventing ozone or oxygen in the chamber 2 from leaking to the outside (when ozone can leak directly to the outside, the overall ozone content in the wastewater treatment plant will increase over time, polluting the environment and harming the physical and mental health of the staff).

[0060] The sensor installed inside the preparation chamber 1 can sense the ozone / oxygen content in the environment inside the preparation chamber 1 to determine the leakage amount. When the leakage amount exceeds the standard, the exhaust structure and the conduction structure will activate to quickly discharge the air inside the preparation chamber 1, thereby reducing the ozone and oxygen content and thus reducing the risk of dangerous accidents (if the oxygen or ozone concentration inside the preparation chamber 1 reaches the dangerous value, there is a risk of explosion).

[0061] When the exhaust structure operates, it accelerates the flow of air from the preparation chamber 1 to the outside, thereby improving exhaust efficiency. Simultaneously, the exhaust structure activates the conduction structure, causing the baffle 14 to rotate and disengage from the vent 101, thus opening the vent 101 and allowing air circulation. The discharged high concentrations of ozone or oxygen are diluted by the atmosphere, reducing the probability of dangerous accidents; and short-term ozone or oxygen discharge has minimal impact on the physical and mental health of operators.

[0062] By combining the exhaust structure and the conduction structure, the ozone content inside the preparation chamber 1 can be effectively reduced, thus preventing dangerous accidents.

[0063] Furthermore, when the leakage exceeds the standard, the ozone generation efficiency in chamber 2 will be lower, which will reduce the concentration of ozone micro-nano bubbles discharged from microbubble pipe 301, thereby reducing the efficiency of COD removal from wastewater.

[0064] The control system will synchronously open and close the structure, thereby driving the sealing plates 16 on the two valve bodies 15 to rotate and move closer to each other. When the sealing plates 16 on one valve body 15 touch each other, the valve body 15 will close, thereby blocking the passage of gas and liquid, and avoiding reduced reaction efficiency and excessive COD content in the wastewater discharged from the drainage pipe 303.

[0065] After the device is overhauled, the sealing plate 16 is rotated away by the synchronous opening and closing structure, so as to synchronously control the gas and liquid to enter the buffer tank 3 for purification treatment.

[0066] By synchronously controlling the entry of gas or liquid into buffer tank 3 or synchronously blocking the entry of gas and liquid into buffer tank 3 through a synchronous opening and closing structure, it is possible to prevent incompletely reacted wastewater from entering the next purification process and causing damage to subsequent process equipment.

[0067] As a further embodiment of this utility model, the exhaust structure includes a mounting frame 4 fixedly installed inside the preparation box 1; an exhaust motor 5 is fixedly installed on the mounting frame 4; a rotating shaft 6 rotatably connected to the mounting frame 4 is fixedly installed on the output end of the exhaust motor 5; and multiple sets of equidistantly distributed fan blades 7 are fixedly installed on the circumference of the rotating shaft 6.

[0068] In this embodiment, when the leakage exceeds the standard, the exhaust motor 5 will rotate, thereby driving the rotating shaft 6 to rotate, which in turn drives multiple sets of fan blades 7 to rotate synchronously.

[0069] When the fan blade 7 rotates, it blows the air inside the preparation chamber 1 toward the vent 101, thereby accelerating the airflow speed and reducing the ozone content inside the preparation chamber 1 to avoid dangerous accidents.

[0070] By activating the exhaust structure to increase airflow, air retention can be effectively avoided, which leads to low exhaust efficiency. This improves efficiency and allows for a rapid resumption of production.

[0071] As a further embodiment of this utility model, the conductive structure includes a fixed block 8 fixedly installed on the rotating shaft 6; multiple sets of centrifugal blocks 9 are slidably fitted on the fixed block 8; a telescopic column 901 is fixedly installed on the centrifugal block 9; a fixed column 20 is fixedly installed on the preparation box 1; a movable sleeve 10 is sleeved on the fixed column 20; a telescopic sleeve 1001 that slidably fits with the telescopic column 901 is fixedly installed on the movable sleeve 10; a sliding sleeve 11 is slidably fitted on the fixed column 20; a first inclined groove 1101 is formed on the sliding sleeve 11; a rotating sleeve 13 is sleeved on the sliding sleeve 11; a protruding column 1301 that slidably fits with the first inclined groove 1101 is fixedly installed inside the rotating sleeve 13; multiple sets of baffles 14 are fixedly connected to the rotating sleeve 13 and are equidistantly distributed.

[0072] In this embodiment, when the exhaust structure is activated, the rotating shaft 6 rotates, thereby driving the fixed block 8 to rotate, which in turn drives the centrifugal block 9 to rotate. Under the action of centrifugal force, the centrifugal block 9 will gradually move away from the rotating shaft 6.

[0073] During the movement of the centrifugal block 9, the telescopic column 901 and the telescopic sleeve 1001 will drive the moving sleeve 10 to move towards the baffle 14, and the telescopic column 901 will slide outward in the telescopic sleeve 1001.

[0074] During the movement of the movable sleeve 10, it will come into contact with the sliding sleeve 11, and after the contact, it will drive the sliding sleeve 11 to move synchronously, thereby driving the protruding post 1301 to slide in the first inclined groove 1101. Through the squeezing action of the groove wall of the first inclined groove 1101 on the protruding post 1301, the rotating sleeve 13 can be driven to rotate, thereby driving the baffle 14 to rotate, so that the baffle 14 will be displaced, thereby disengaging the baffle 14 from the vent hole 101 to facilitate air circulation.

[0075] The centrifugal force generated by rotation drives the conductive structure, enabling a rapid response after the exhaust structure actuates, avoiding slow exhaust due to independent drive and thus quickly eliminating safety hazards. A single drive source can simultaneously perform two functions, effectively reducing the device's energy consumption.

[0076] By combining the exhaust structure and the conduction structure, the ozone content inside the preparation chamber 1 can be effectively reduced, thus preventing dangerous accidents.

[0077] As a further embodiment of this utility model, a return spring 12 is provided inside the rotating sleeve 13; the two ends of the return spring 12 respectively abut against the rotating sleeve 13 and the sliding sleeve 11.

[0078] In this embodiment, as the sliding sleeve 11 approaches the baffle 14, it compresses the return spring 12.

[0079] When the ozone concentration inside the preparation chamber 1 returns to normal, the exhaust structure will stop operating. At this time, the spring force of the reset spring 12 will drive the conduction structure to reset, so that the baffle 14 and the vent 101 can re-fit and seal the preparation chamber 1.

[0080] The spring force of the reset spring 12 will drive the sliding sleeve 11 away from the baffle 14, thereby causing the first inclined groove 1101 to slide and engage with the protruding post 1301. At this time, the compression of the protruding post 1301 by the groove wall of the first inclined groove 1101 can drive the rotating sleeve 13 to rotate in the opposite direction, thereby driving the baffle 14 to rotate in the opposite direction and reset.

[0081] Furthermore, the sliding sleeve 11 will drive the moving sleeve 10 to move synchronously, thereby driving the centrifugal block 9 to approach the rotating shaft 6 through the telescopic column 901 and the telescopic sleeve 1001 to complete the reset. During this process, the telescopic column 901 slides inward in the telescopic sleeve 1001.

[0082] The elastic potential energy of the return spring 12 is increased by the cooperation between the exhaust structure and the conduction structure. After the exhaust action is completed, the elastic potential energy of the return spring 12 is used to complete the reset of the device, which can increase the automation level of the device and improve the reusability of the device, and avoid increasing the workload due to device reset.

[0083] As a further embodiment of this utility model, the synchronous opening and closing structure includes a turntable 17 rotatably mounted on the valve body 15; a second inclined groove 1701 is provided on the turntable 17; and a protruding post 1601 that slides and engages with the second inclined groove 1701 is fixedly mounted on the sealing plate 16.

[0084] As a further embodiment of this utility model, the synchronous opening and closing structure also includes a connecting plate 21 that is fixedly connected to both valve bodies 15; a control motor 18 is fixedly installed on the connecting plate 21; a small gear 19 is fixedly installed on the output end of the control motor 18; a large gear 1702 is fixedly installed on the turntable 17; the small gear 19 meshes with both large gears 1702.

[0085] In this embodiment, when leakage exceeds the limit, the system activates the control motor 18, which drives the pinion 19 to rotate. Through meshing, the pinion 19 drives the two large pinions 1702 to rotate synchronously, thereby driving the turntable 17 to rotate synchronously. By having one control motor 18 simultaneously drive the two turntables 17 to rotate synchronously, the two valve bodies 15 can be opened and closed synchronously. This allows for the simultaneous blocking of liquid and gas when leakage exceeds the limit, preventing incompletely reacted wastewater from flowing into the next purification process.

[0086] When the sealing plates 16 are far apart, the protruding post 1601 is located at the end of the second inclined groove 1701 near the valve body 15; while when the sealing plates 16 are in contact with each other, the protruding post 1601 is located at the end of the second inclined groove 1701 away from the valve body 15.

[0087] When the turntable 17 rotates, it can drive the second inclined groove 1701 to rotate, thereby causing the second inclined groove 1701 to slide and engage with the protruding column 1601, so that the protruding column 1601 slides from the other end of the second inclined groove 1701 away from the valve body 15, thereby driving the sealing plate 16 to rotate so that they collide with each other.

[0088] The pressure applied to the sealing plate 16 by the liquid and gas is perpendicular to the sealing plate 16. This pressure cannot drive the sealing plate 16 to rotate. Therefore, when the sealing plates 16 come into contact with each other, they can effectively seal the blockage and prevent liquid or gas from leaking into the buffer tank 3.

[0089] As a further improvement of this utility model, the water inlet pipe 302 is provided with multiple bends.

[0090] In this embodiment, the flow rate of wastewater into the buffer tank 3 is reduced by the bend, thereby increasing the stagnation time of the wastewater in the buffer tank 3, which in turn increases the contact time between the wastewater and the ozone microbubbles and improves the COD removal efficiency.

[0091] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. A high reaction rate ozone oxidation device for removing COD in wastewater, comprising a preparation box (1); characterized in that An occurrence chamber (2) is fixedly installed in the preparation box (1); a buffer tank (3) is arranged on the preparation box (1); a micro-bubble pipeline (301), a water inlet pipeline (302) and a water outlet pipeline (303) are fixedly installed on the buffer tank (3); Valves (15) are fixedly installed on the micro-bubble pipeline (301) and the water inlet pipeline (302); a plurality of sealing plates (16) are rotatably installed on the valves (15); the occurrence chamber (2) and the micro-bubble pipeline (301) are communicated through the valves (15); the water inlet pipeline (302) and a sewage pipeline are communicated through the valves (15); A synchronous opening and closing structure is arranged on the valve (15); the synchronous opening and closing structure can drive a plurality of the sealing plates (16) to rotate, so as to synchronously control the conduction states of the two valves (15); The preparation box (1) is provided with air holes (101); a plurality of baffles (14) are rotatably installed on the preparation box (1) and cooperated with the air holes (101); An exhaust structure and a conduction structure are arranged on the preparation box (1); the exhaust structure can accelerate the speed of air flowing out of the preparation box (1) when it acts; and the conduction structure is driven to act to drive the baffles (14) to rotate, so as to conduct the air holes (101).

2. The high reaction rate ozone oxidation device for removing COD in wastewater according to claim 1, characterized in that, The exhaust structure comprises a mounting bracket (4) fixedly installed in the preparation box (1); an exhaust motor (5) is fixedly installed on the mounting bracket (4); a rotating shaft (6) is fixedly installed on the output end of the exhaust motor (5) and rotatably connected with the mounting bracket (4); a plurality of equally distributed fan blades (7) are fixedly installed on the circumference of the rotating shaft (6).

3. The high reaction rate ozone oxidation device for removing COD in wastewater according to claim 2, characterized in that, The conduction structure comprises a fixed block (8) fixedly installed on the rotating shaft (6); a plurality of centrifugal blocks (9) are slidably embedded on the fixed block (8); an extension column (901) is fixedly installed on the centrifugal block (9); a fixed column (20) is fixedly installed on the preparation box (1); a moving sleeve (10) is sleeved on the fixed column (20); an extension sleeve (1001) is fixedly installed on the moving sleeve (10) and slidably embedded with the extension column (901); a sliding sleeve (11) is slidably embedded on the fixed column (20); a first inclined groove (1101) is formed in the sliding sleeve (11); a rotating sleeve (13) is sleeved on the sliding sleeve (11); a protruding column (1301) is fixedly installed in the rotating sleeve (13) and slidably embedded with the first inclined groove (1101); a plurality of the baffles (14) are fixedly connected with the rotating sleeve (13) and equally distributed.

4. The high reaction rate ozone oxidation device for removing COD in wastewater according to claim 3, characterized in that, A reset spring (12) is arranged in the rotating sleeve (13); the two ends of the reset spring (12) are respectively in contact with the rotating sleeve (13) and the sliding sleeve (11).

5. The high reaction rate ozone oxidation device for removing COD in wastewater according to claim 1, characterized in that, The synchronous opening and closing structure comprises a rotating disc (17) rotatably installed on the valve body (15); a second inclined groove (1701) is formed in the rotating disc (17); and a protruding column (1601) is fixedly installed on the sealing plate (16) and is slidably matched with the second inclined groove (1701).

6. The high reaction rate ozone oxidation device for removing COD in wastewater according to claim 5, characterized in that, The synchronous opening and closing structure further comprises a connecting plate (21) fixedly connected with the two valve bodies (15); a control motor (18) is fixedly installed on the connecting plate (21); a pinion (19) is fixedly installed on an output end of the control motor (18); a large gear (1702) is fixedly installed on the rotating disc (17); and the pinion (19) is engaged with the two large gears (1702).

7. The high reaction rate ozone oxidation device for removing COD in wastewater according to claim 1, characterized in that, A plurality of bending portions are arranged on the water inlet pipeline (302).

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