Oxidation denitrification device for treating lithium battery wastewater

Abstract

The invention discloses an oxidation denitrification device for treating lithium battery wastewater, and relates to the technical field of lithium battery wastewater treatment.The oxidation denitrification device is provided with a water distribution mechanism, so that wastewater flows upwards in a tank body and flows through a sludge bed in the tank body to be subjected to anaerobic ammonia oxidation reaction, and then oxidation denitrification is conducted on the lithium battery wastewater; the separating mechanism is arranged on the flow guide mechanism, so that sludge is separated from wastewater through the separating mechanism, the influence of rising water flow and bubbles on the sludge in the back-sinking process is reduced through circulating blades of the flow guide mechanism, the sludge can rapidly fall back to a sludge bed, meanwhile, part of water flow downwards flows back on the periphery of the tank body, and the wastewater circularly flows in the tank body; by arranging the adjusting block, the adjusting block moves according to the flow speed of water flow and thrust generated by bubbles, then the rate of circulating flow is controlled, gas generated by reaction is collected through the gas collecting mechanism, and treated wastewater is discharged through the water outlet pipe at the top.

Description

Technical Field

[0001] This invention relates to the field of lithium battery wastewater treatment technology, specifically an oxidation and denitrification device for treating lithium battery wastewater. Background Technology

[0002] Lithium-ion battery wastewater mainly originates from electrode material preparation, battery assembly, and cleaning processes during lithium-ion battery production. Therefore, lithium-ion battery wastewater typically contains organic pollutants such as NMP (nitrogen methyl pyrrolidone), PVDF binders, and ester-based organic compounds; heavy metal pollutants such as nickel, cobalt, and manganese; and fluorides and ammonia nitrogen, such as hydrofluoric acid produced from the hydrolysis of lithium hexafluorophosphate and ammonia nitrogen in ammonia washing wastewater. The ammonia nitrogen in the wastewater is primarily composed of ammonium ions (NH4+). + It exists in the form of sodium sulfate, as well as high-salt salts such as sodium sulfate and sodium chloride.

[0003] The principle of anaerobic ammonia oxidation denitrification is that, under anaerobic conditions, anaerobic ammonia-oxidizing bacteria use ammonium ions as electron donors to oxidize them into nitrates or nitrites. Then, using nitrates or nitrites as electron acceptors, they generate nitrogen gas and water. This process transforms ammonia nitrogen into nitrogen gas through a series of reactions, thereby denitrifying lithium wastewater.

[0004] Existing oxidative denitrification devices typically include a water distribution mechanism and a separation mechanism. The water distribution mechanism allows the lithium battery wastewater to enter from the bottom of the device and flow upwards, passing through a sludge layer containing anaerobic ammonia-oxidizing bacteria. The wastewater reacts to denitrify the wastewater. As the wastewater continues to flow upwards, some sludge is carried away by the water flow. The separation mechanism separates the gas, sludge, and water from the wastewater. The gas flows upwards and is collected by a collector, while the sludge sinks to the bottom of the device under gravity. However, the sludge's sinking process is interfered with by the rising wastewater flow and the bubbles generated during the reaction, preventing the sludge from quickly settling back to the bottom. This affects the content of anaerobic ammonia-oxidizing bacteria in the sludge layer, resulting in insufficient bacteria content and impacting the denitrification effect. Summary of the Invention

[0005] The purpose of this invention is to solve the problem in the prior art where the sludge is interfered with by the rising wastewater flow and air bubbles during the sludge settling process, which prevents the sludge from settling quickly into the sludge layer. This results in a decrease in the content of anaerobic ammonia-oxidizing bacteria in the sludge layer, thereby affecting the denitrification effect of the wastewater passing through the sludge layer and thus affecting the treatment effect of lithium battery wastewater. Therefore, an oxidation denitrification device for treating lithium battery wastewater is proposed.

[0006] To address the above problems, the present invention provides the following technical solution: An oxidative denitrification device for treating lithium battery wastewater includes a tank, a water distribution mechanism at the bottom of the tank, a separation mechanism and a flow guiding mechanism in the middle of the tank, a gas collection mechanism at the top of the tank, and a water outlet pipe. The flow guiding mechanism includes circulation vanes and regulating blocks; The circulating blades drive the wastewater to circulate within the tank, and the flow rate is adjusted by regulating blocks.

[0007] By installing a water distribution mechanism at the bottom of the tank, lithium battery wastewater is evenly distributed into the bottom of the tank. A flow guiding mechanism then directs the wastewater upwards in the middle of the tank, allowing it to flow through a sludge bed inside the tank. The sludge particles contain anaerobic ammonia-oxidizing bacteria, causing contact between the wastewater and sludge particles, resulting in an anaerobic ammonia oxidation reaction. This process oxidizes and denitrifies the lithium battery wastewater. A separation mechanism above the flow guiding mechanism separates the sludge from the wastewater. The circulating blades of the flow guiding mechanism force the wastewater to mix within the mounting cylinder before dispersing it to the surrounding area. The diffusion process improves reaction efficiency, causing the sludge to flow towards the periphery of the installation cylinder. This reduces the impact of the rising water flow on the sludge after it falls off the separation mechanism, allowing the sludge to quickly fall back to the sludge bed. Simultaneously, some water flows downwards around the tank, causing the wastewater to circulate within the tank. By setting up regulating blocks, the angle of the circulating blades is adjusted according to the water flow rate and the thrust generated by the bubbles produced by the anaerobic ammonia oxidation reaction, thereby controlling the circulation rate. The gas generated by the reaction is collected by the gas collection mechanism, and the treated wastewater is discharged through the top outlet pipe.

[0008] Furthermore, the flow guiding mechanism also includes a mounting frame, which is rotatably connected to several circulating blades, and the mounting frame is slidably connected to an adjusting block. Several drive blades are provided at the bottom of the mounting frame. The adjusting block is provided with several sliding grooves; Each circulation blade is equipped with a connecting rod; The mounting bracket and the rotating shaft are rotatably connected, the connecting rod and the sliding groove are slidably connected, and the tank body is equipped with a guide tube.

[0009] By installing a mounting frame on a rotating shaft, the mounting frame and the rotating shaft are rotatably connected, allowing the mounting frame to rotate around the shaft as its axis. Several circulating blades are installed on the mounting frame, rotating with it. A sliding adjusting block is installed on the mounting frame, with the same number of sliding grooves as the circulating blades. A connecting rod is installed on one end of the circulating blade near the sliding groove, and the other end of the connecting rod is located inside the sliding groove. The size of the connecting rod matches the height of the sliding groove. When the adjusting block moves up and down, it drives the connecting rod to move upward and slide horizontally within the sliding groove, thereby rotating the circulating blades. The angle of the circulating blades is adjusted according to the sliding amount of the adjusting block, thus controlling the rate of circulation. By setting a guide tube, the wastewater rises along the inner side of the guide tube and circulates back to the bottom of the tank on the outer side of the guide tube.

[0010] Furthermore, the adjusting block is equipped with an adjusting plate; The adjustment plate has several through holes, which are honeycomb-shaped and inclined. A reset spring is provided between the bottom of the adjustment plate and the mounting bracket.

[0011] By installing an adjusting plate at the bottom of the adjusting block, with several through holes on the adjusting plate at an angle, the rising wastewater and the bubbles generated by the reaction collide with the adjusting plate. The impact force of the water flow and the buoyancy of the bubbles act on the adjusting plate, causing the adjusting plate to overcome the elastic force of the return spring and drive the adjusting block to slide upward. The adjusting plate is subjected to different forces according to the amount of bubbles generated by the reaction, thereby controlling the sliding distance of the adjusting plate. The honeycomb-shaped through holes divide the bubbles, preventing them from colliding with each other during the rising process and forming larger bubbles.

[0012] Furthermore, the drive blades are arc-shaped and have several guide blocks. The inner side of the drive blade is provided with an inclined surface.

[0013] By setting arc-shaped drive blades with inclined surfaces on the inner side of the drive blades, the sludge around the bottom of the tank is pushed towards the middle of the tank, thereby ensuring the sludge concentration of the sludge bed above the water distribution mechanism and ensuring the quality of the reaction. By setting guide blocks on the drive blades, the wastewater on the inner wall of the bottom of the tank flows out.

[0014] The guide block has curved and flat surfaces.

[0015] The guide block has a curved surface on the side near the guide tube and a flat surface on the side near the inner wall of the tank. When the guide block rotates with the drive blades, the wastewater flows separately from the initial end where the curved surface and the flat surface meet, and simultaneously reaches the end where the curved surface and the flat surface meet, thus creating a pressure difference. This causes the wastewater on the bottom side of the tank to flow into the guide tube, eliminating dead zones in the flow.

[0016] Furthermore, the water distribution mechanism includes a water distribution hood, which is equipped with a water inlet pipe; The water distribution cover has several flow channels facing the outside of the drive blades, and the flow channels are spiral-shaped. The inlet pipe is equipped with a water pump, and a raw water tank is located on one side of the water pump.

[0017] The water pump is connected to the raw water tank pipe at the inlet end and to the inlet pipe at the outlet end. The pump drives the lithium battery wastewater in the raw water tank to enter the bottom of the tank. Several spiral flow channels are set on the water distribution hood below the guide tube, so that the wastewater flows out of the water distribution hood along the flow channels. This allows the wastewater to enter the tank evenly and flow upward through the sludge bed on the water distribution hood. The wastewater then flows towards the outside of the drive blades through the flow channels, thus driving the drive blades to rotate.

[0018] Furthermore, the separation mechanism includes a fixed frame, which is provided with several baffles; The baffle is in the shape of an inverted V, and there are guide grooves on both sides of the baffle, which are also inverted V. Each baffle is equipped with an air duct above it.

[0019] By installing several inverted V-shaped baffles on the fixed frame above the tank, when wastewater passes through the baffles, the air bubbles in the wastewater flow along the inclined surface of the baffles to the top of the baffles. Through the air guide pipes installed on the baffles, the gas flows to the top of the tank. By installing inverted V-shaped guide channels on the inclined surface inside the inverted V-shaped baffles, when the wastewater flows to the inclined surface inside the baffles, the sludge flows along the inverted V-shaped guide channels to the inner wall of the tank under the action of gravity. Finally, under the action of gravity and the circulating water flow, the sludge sinks down along the inner wall of the tank to the top of the water distribution hood.

[0020] Furthermore, the gas collection mechanism includes a gas storage tank, which is equipped with several gas collection pipes.

[0021] By installing a gas collecting pipe at the top of the tank, which is located above the water outlet pipe, the gas at the top of the tank flows through the gas collecting pipe to the gas storage tank, thereby collecting the gas produced by the reaction.

[0022] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting up a flow guiding mechanism, the rising wastewater flow is concentrated in the middle of the flow guiding cylinder, while the sinking sludge sinks back to the water distribution hood along the circulation channel on the outside of the flow guiding cylinder. This reduces the impact of the rising wastewater flow and air bubbles during the rising process on the sludge sinking, ensuring the content of anaerobic ammonia-oxidizing bacteria in the sludge layer. This ensures that when lithium battery wastewater passes through the sludge layer, compounds such as ammonia nitrogen in the wastewater can fully react under the action of anaerobic ammonia-oxidizing bacteria, converting ammonia nitrogen into nitrogen gas, thereby denitrifying the lithium wastewater and ensuring the denitrification effect of lithium battery wastewater.

[0023] 2. By setting adjustable circulation blades, the circulation rate can be adjusted according to the amount of bubbles generated by the reaction and the impact force of the rising water flow. This allows the sludge to quickly settle back into the sludge layer, while reducing energy consumption. It also forces the wastewater and the sludge carried by the water flow and bubbles to mix evenly, thus mixing some unreacted pollutants with the sludge in the water and improving the denitrification effect. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 yes Figure 2 A magnified view of part A; Figure 4 This is a schematic diagram of the flow guiding mechanism of the present invention; Figure 5 yes Figure 4 A magnified view of a portion of C; Figure 6 yes Figure 2 A magnified view of part B; Figure 7 This is a schematic diagram of the structure of the baffle of the present invention.

[0025] In the diagram: 1. Tank; 2. Water distribution mechanism; 21. Water distribution cover; 211. Flow channel; 22. Inlet pipe; 23. Water pump; 24. Raw water tank; 3. Gas collection mechanism; 31. Gas storage tank; 32. Gas collection pipe; 4. Separation mechanism; 41. Fixing frame; 42. Baffle; 421. Guide channel; 43. Air guide pipe; 5. Guide mechanism; 51. Circulation blade; 511. Connecting rod; 52. Adjusting block; 521. Sliding groove; 53. Mounting frame; 54. Drive blade; 541. Inclined surface; 55. Return spring; 56. Guide cylinder; 58. Adjusting plate; 581. Through hole; 57. Guide block; 571. Curved surface; 572. Flat surface; 6. Outlet pipe; 7. Rotating shaft. Detailed Implementation

[0026] The embodiments of the present invention will now be further described in conjunction with the accompanying drawings and examples.

[0027] Example: Figure 1 and Figure 2 As shown, the present invention provides a technical solution: an oxidation denitrification device for treating lithium battery wastewater. The oxidation denitrification device includes a tank 1, a water distribution mechanism 2 at the bottom of the tank 1, a separation mechanism 4 and a flow guiding mechanism 5 in the middle of the tank 1, a gas collection mechanism 3 at the top of the tank 1, and a water outlet pipe 6 in the tank 1. The flow guiding mechanism 5 includes a circulation blade 51 and an adjusting block 52; The circulating blades 51 drive the wastewater to circulate within the tank 1, and the flow rate of the circulating blades 51 is adjusted by the regulating block 52.

[0028] By installing a water distribution mechanism 2 at the bottom of tank 1, lithium battery wastewater is evenly introduced into the bottom of tank 1. The flow guiding mechanism 5 causes the wastewater to flow upwards in the middle of tank 1, passing through the sludge bed inside the tank 1. The sludge particles contain anaerobic ammonia-oxidizing bacteria, allowing the wastewater and sludge particles to come into contact, resulting in an anaerobic ammonia oxidation reaction, thereby oxidizing and denitrifying the lithium battery wastewater. A separation mechanism 4 is installed above the flow guiding mechanism 5, separating the sludge from the wastewater. The wastewater is then forcibly mixed through the installation cylinder of the flow guiding mechanism 5 by the circulation blades 51 before flowing into the cylinder. The sludge diffuses around the periphery, improving reaction efficiency and causing it to flow towards the periphery of the installation cylinder. This reduces the impact of the rising water flow on the sludge after it falls off the separation mechanism 4, allowing the sludge to quickly fall back to the sludge bed. Simultaneously, some water flows downward around the periphery of the tank 1, causing the wastewater to circulate within the tank 1. By setting an adjusting block 52, the angle of the circulating blades 51 is adjusted according to the water flow rate and the thrust generated by the bubbles produced by the anaerobic ammonia oxidation reaction, thereby controlling the rate of circulation. The gas generated by the reaction is collected by the gas collection mechanism 3, and the treated wastewater is discharged through the top outlet pipe 6.

[0029] like Figure 2 and Figure 3 As shown, the flow guiding mechanism 5 also includes a mounting frame 53, which is rotatably connected to several circulating blades 51, and the mounting frame 53 is slidably connected to the adjusting block 52. Several driving blades 54 are provided at the bottom of the mounting frame 53. The adjusting block 52 is provided with several sliding grooves 521; Each circulating blade 51 is provided with a connecting rod 511; The mounting bracket 53 and the rotating shaft 7 are rotatably connected, the connecting rod 511 and the sliding groove 521 are slidably connected, and the tank body 1 is provided with a guide tube 56.

[0030] By setting a mounting frame 53 on the rotating shaft 7, the mounting frame 53 and the rotating shaft 7 are rotatably connected, allowing the mounting frame 53 to rotate around the rotating shaft 7 as an axis. By installing several circulating blades 51 on the mounting frame 53, they rotate with the mounting frame 53. By installing a sliding adjusting block 52 on the mounting frame 53, the adjusting block 52 is provided with the same number of sliding grooves 521 as the circulating blades 51. A connecting rod 511 is installed at one end of the circulating blade 51 near the sliding groove 521, and the other end of the connecting rod 511 is located in the sliding groove 521. The size of the connecting rod 511 matches the height of the sliding groove 521. When the adjusting block 52 moves up and down, it drives the connecting rod 511 to move upward and slide horizontally in the sliding groove 521, thereby causing the circulating blades 51 to rotate. Then, the angle of the circulating blades 51 is adjusted according to the sliding amount of the adjusting block 52, thereby controlling the rate of circulation. By setting a guide tube 56, the wastewater rises along the inner side of the guide tube 56 and circulates back to the bottom of the tank 1 on the outer side of the guide tube 56.

[0031] like Figure 5 and Figure 6 As shown, the adjusting block 52 is equipped with an adjusting plate 58; The adjusting plate 58 is provided with a plurality of through holes 581, which are honeycomb-shaped and inclined. A reset spring 55 is provided between the bottom of the adjusting plate 58 and the mounting bracket 53.

[0032] By setting an adjusting plate 58 at the bottom of the adjusting block 52, and having several through holes 581 on the adjusting plate 58, which are inclined, the rising wastewater flow and the bubbles generated by the reaction collide with the adjusting plate 58. The impact force of the water flow and the buoyancy of the bubbles act on the adjusting plate 58, thereby causing the adjusting plate 58 to overcome the elastic force of the return spring 55 and drive the adjusting block 52 to slide upward. Depending on the amount of bubbles generated by the reaction, the adjusting plate 58 is subjected to different forces, thereby controlling the sliding distance of the adjusting plate 58. The honeycomb-shaped through holes 581 divide the bubbles, preventing them from colliding with each other during the rising process and forming larger bubbles.

[0033] like Figure 4 and Figure 6 As shown, the drive blade 54 is arc-shaped and has several guide blocks 57. The inner side of the drive blade 54 is provided with an inclined surface 541.

[0034] By setting an arc-shaped drive blade 54 with an inclined surface 541 on the inner side of the drive blade 54, the sludge around the bottom of the tank 1 is pushed towards the middle of the tank 1, thereby ensuring the sludge concentration of the sludge bed above the water distribution mechanism 2 and ensuring the quality of the reaction. By setting a guide block 57 on the drive blade 54, the wastewater on the inner wall of the bottom of the tank 1 flows out.

[0035] The guide block 57 has a curved surface 571 and a flat surface 572.

[0036] The guide block 57 has a curved surface 571 on the side near the guide cylinder 56 and a flat surface 572 on the side near the inner wall of the tank 1. When the guide block 57 rotates with the drive blade 54, the wastewater flows separately from the initial end where the curved surface 571 and the flat surface 572 meet, and simultaneously reaches the end where the curved surface 571 and the flat surface 572 meet, thereby generating a pressure difference. This causes the wastewater on the bottom side of the tank 1 to flow into the guide cylinder 56, eliminating dead zones in the flow.

[0037] like Figure 2 and Figure 4 As shown, the water distribution mechanism 2 includes a water distribution cover 21, and the water distribution cover 21 is provided with a water inlet pipe 22; The water distribution cover 21 is provided with several flow channels 211, which face the outside of the drive blade 54 and are spiral in shape. The water inlet pipe 22 is equipped with a water pump 23, and a raw water tank 24 is located on one side of the water pump 23.

[0038] The water pump 23 is connected to the raw water tank 24 via a pipe at its inlet end and to the inlet pipe 22 via its outlet end. This drives the water pump 23, allowing the lithium battery wastewater in the raw water tank 24 to enter the bottom of the tank 1. Several spiral-shaped flow channels 211 are set on the water distribution cover 21 below the guide tube 56, allowing the wastewater to flow out of the water distribution cover 21 along these channels. This ensures that the wastewater enters the tank 1 evenly and flows upward through the sludge bed on the water distribution cover 21. The wastewater then flows towards the outside of the drive blade 54 through the flow channels 211, causing the water flow to drive the drive blade 54 to rotate.

[0039] like Figure 2 and Figure 7 As shown, the separation mechanism 4 includes a fixed frame 41, and the fixed frame 41 is provided with a plurality of baffles 42; The baffle 42 is inverted V-shaped, and the baffle 42 is provided with guide grooves 421 on both sides, and the guide grooves 421 are inverted V-shaped; Each baffle 42 is provided with an air guide tube 43 above it.

[0040] By setting several inverted V-shaped baffles 42 on the fixed frame 41 above the tank body 1, when the wastewater passes through the baffles 42, the air bubbles in the wastewater flow along the inclined surface of the baffles 42 to the top of the baffles 42. Through the air guide pipes 43 set on the baffles 42, the gas flows to the top of the tank body 1. By setting an inverted V-shaped guide channel 421 on the inclined surface of the inner side of the inverted V-shaped baffles 42, when the wastewater flows to the inclined surface of the inner side of the baffles 42, the sludge flows along the inverted V-shaped guide channel 421 towards the inner wall of the tank body 1 under the action of gravity. Finally, under the action of gravity and the circulating water flow, the sludge sinks down along the inner wall of the tank body 1 to the top of the water distribution hood 21.

[0041] like Figure 2 As shown, the gas collection mechanism 3 includes a gas storage tank 31, and the gas storage tank 31 is provided with a number of gas collection pipes 32.

[0042] By setting a gas collecting pipe 32 at the top of the tank 1, which is located above the water outlet pipe 6, the gas at the top of the tank 1 flows through the gas collecting pipe 32 to the gas storage tank 31, thereby collecting the gas produced by the reaction.

[0043] Working principle of the invention: By driving the water pump 23, the lithium battery wastewater in the raw water tank 24 flows into the area below the water distribution hood 21 through the inlet pipe 22. The wastewater then flows evenly through the flow channel 211 on the water distribution hood 21, passing over the sludge bed above it. This allows the wastewater and sludge particles to come into contact, resulting in an anaerobic ammonia oxidation reaction, thus oxidizing and denitrifying the wastewater. The water then flows outwards through the flow channel 211 towards the drive blades 54, causing the drive blades 54 to rotate. This, in turn, rotates the circulation blades 51, causing the sludge to diffuse around the guide tube 56. The wastewater rises along the inner side of the guide tube 56 and circulates back to the bottom of the tank 1 on the outer side of the guide tube 56. Simultaneously, the rising wastewater and the bubbles generated by the reaction collide with the regulating plate 58, causing the regulating plate 58 to overcome the elasticity of the return spring 55 and drive the regulating plate. The segment 52 slides upward, causing the connecting rod 511 to move upward and slide horizontally in the sliding groove 521, thereby causing the circulating blade 51 to rotate. Adjusting the angle of the circulating blade 51 controls the rate of circulation. The wastewater flows upward to the inclined surface inside the baffle 42, causing the sludge to flow along the inverted V-shaped guide channel 421 towards the inner wall of the tank 1 under the action of gravity. Finally, the sludge sinks down along the inner wall of the tank 1 to above the water distribution hood 21 under the action of gravity and the circulating water flow. The air bubbles in the wastewater flow along the inclined surface of the baffle 42 to the top of the baffle 42. Through the air guide pipe 43 set on the baffle 42, the gas flows to the top of the tank 1. Through the air collection pipe 32 at the top of the tank 1, the gas at the top of the tank 1 flows to the air storage tank 31. The treated wastewater is discharged through the water outlet pipe 6.

[0044] The above description is merely a preferred embodiment of the present invention. Any modifications and / or equivalent substitutions and / or improvements made within the scope of the technical solutions claimed in the claims of this application should be included within the protection scope of the present invention. The protection scope of this application is determined by the technical solutions in the claims and their equivalents, and is not limited by the specific description in the specification.

Claims

1. An oxidative denitrification device for treating lithium battery wastewater, characterized in that: The oxidation denitrification device includes a tank (1), a water distribution mechanism (2) at the bottom of the tank (1), a separation mechanism (4) and a flow guiding mechanism (5) in the middle of the tank (1), a gas collection mechanism (3) at the top of the tank (1), and the tank (1) is connected to a water outlet pipe (6) and a rotating shaft (7). The flow guiding mechanism (5) includes several circulation blades (51) and adjusting blocks (52); The circulating blades (51) drive the wastewater to circulate within the tank (1), and the circulation rate of the circulating blades (51) is adjusted by the regulating block (52).

2. The oxidation and denitrification device for treating lithium battery wastewater according to claim 1, characterized in that: The flow guiding mechanism (5) also includes a mounting frame (53), which is rotatably connected to several circulating blades (51), and the mounting frame (53) is slidably connected to the adjusting block (52). Several driving blades (54) are provided at the bottom of the mounting frame (53). The adjusting block (52) is provided with a plurality of sliding grooves (521); Each of the circulating blades (51) is provided with a connecting rod (511); The mounting bracket (53) and the rotating shaft (7) are rotatably connected, the connecting rod (511) and the sliding groove (521) are slidably connected, and the tank body (1) is provided with a guide tube (56).

3. The oxidation and denitrification device for treating lithium battery wastewater according to claim 2, characterized in that: The adjusting block (52) is provided with an adjusting plate (58); The adjusting plate (58) is provided with a plurality of through holes (581), the through holes (581) are honeycomb-shaped, and the through holes (581) are inclined. A return spring (55) is provided between the bottom of the adjustment plate (58) and the mounting bracket (53).

4. The oxidation and denitrification device for treating lithium battery wastewater according to claim 2, characterized in that: The drive blade (54) is arc-shaped and has several guide blocks (57). The inner side of the drive blade (54) is provided with an inclined surface (541).

5. The oxidation and denitrification device for treating lithium battery wastewater according to claim 4, characterized in that: The guide block (57) has a curved surface (571) and a flat surface (572).

6. The oxidation and denitrification device for treating lithium battery wastewater according to claim 4, characterized in that: The water distribution mechanism (2) includes a water distribution cover (21), and the water distribution cover (21) is provided with a water inlet pipe (22); The water distribution cover (21) is provided with a plurality of flow channels (211), the flow channels (211) facing the outside of the drive blade (54), and the plurality of flow channels (211) are spiral in shape; The water inlet pipe (22) is equipped with a water pump (23), and a raw water tank (24) is provided on one side of the water pump (23).

7. The oxidation and denitrification device for treating lithium battery wastewater according to claim 1, characterized in that: The separation mechanism (4) includes a fixed frame (41), which is provided with a plurality of baffles (42). The baffle (42) is inverted V-shaped, and the baffle (42) is provided with guide grooves (421) on both sides, and the guide grooves (421) are inverted V-shaped; Each of the baffles (42) is provided with an air guide tube (43) above it.

8. The oxidation and denitrification device for treating lithium battery wastewater according to claim 1, characterized in that: The gas collection mechanism (3) includes a gas storage tank (31), and the gas storage tank (31) is provided with a plurality of gas collection pipes (32).

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