System for treating raffinate wastewater in ternary lithium battery recovery process

Abstract

The invention discloses a raffinate wastewater treatment system in a ternary lithium battery recovery process, and relates to the field of wastewater treatment. The device comprises a bottom plate, and a filtering mechanism, a cleaning mechanism and a circulating mechanism are arranged on the bottom plate; the filtering mechanism comprises a settling box fixedly connected to the top face of the bottom plate, two partition plates are fixedly connected to the inner wall of the settling box, a first water drainage opening and a second water drainage opening are formed in the two partition plates respectively, the first water drainage opening is formed above the second water drainage opening, and a defoaming cavity is formed between the second water drainage opening and the first water drainage opening. By arranging the filtering mechanism, foam is prevented from staying on the water surface for a long time, by means of the rapid foam removing mechanism, the sewage treatment efficiency is improved, the treated water quality can be effectively improved, when the water level of sewage in the foam removing cavity is higher than the water outlet II, the sewage is poured into the water outlet cavity through the water outlet II, and the water quality is improved. The sewage is subjected to secondary sedimentation, so that the sewage treatment effect is further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a system for treating raffinate wastewater in a ternary lithium battery recovery process. Background Art

[0002] During the recycling process of ternary lithium batteries, wastewater pollution will be generated in the battery disassembly, wet recovery and extraction units. Among them, the raffinate wastewater is one of the main sources of wastewater, and the water volume accounts for more than 60% of the total wastewater. The raffinate wastewater has the following characteristics: 1. High concentration of organic pollutants: COD content is generally 1000-10000 mg / L, 2. High fluorine content: fluoride ion content is as high as hundreds to thousands of mg / L, 3. High salt content: Under normal circumstances, the salt content is 10%-15%, and can reach up to 20% or more, mainly sulfate. Due to the above characteristics of the raffinate wastewater, it is difficult to treat. And because of the high sulfate (sodium sulfate) content in the water, it has a high recovery value. For the treatment of this type of raffinate wastewater, MVR and other evaporation processes are usually used to recover sodium sulfate in the wastewater, and the sodium sulfate product obtained by recovering sodium sulfate is sold as an industrial product. For COD and some oil substances with high content in wastewater, the industry usually uses activated carbon adsorption, Fenton oxidation, ozone oxidation and other physicochemical processes for pretreatment before entering the evaporation device.

[0003] However, when recycling wastewater, the existing technology is not convenient for thoroughly filtering out the particulate impurities in the sewage, which will cause the recycled water to be impure, thus affecting the subsequent treatment effect and safety. Excessive foam in the wastewater will also affect the subsequent treatment effect. With the acceleration of the industrialization process, the types and components of wastewater are becoming increasingly complex. It not only contains a large amount of organic matter and pollutants, but also produces difficult-to-degrade foam and suspended matter. These problems directly restrict the efficiency and safety of wastewater recycling. Summary of the invention

[0004] The object of the present invention is to provide a system for treating wastewater extracted during the recovery process of ternary lithium batteries. A filtering mechanism is provided to prevent foam from staying on the water surface for a long time. This mechanism for quickly removing foam not only improves the efficiency of sewage treatment, but also effectively improves the quality of treated water. When the sewage water level inside the defoaming chamber is higher than the second drain outlet, the sewage is poured into the outlet chamber through the second drain outlet, and the sewage is subjected to secondary sedimentation, thereby further improving the treatment effect of the sewage. The problem that the prior art is not convenient for thoroughly filtering out the particulate impurities in the sewage, which will cause the recovered water quality to be not pure enough, thereby affecting the subsequent treatment effect and safety, and the problem that too much foam in the wastewater will also affect the subsequent treatment effect, is solved.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a system for treating wastewater from ternary lithium battery recovery, comprising a bottom plate, on which a filtering mechanism, a cleaning mechanism and a circulation mechanism are arranged;

[0007] The filtering mechanism includes a sedimentation box fixedly connected to the top surface of the bottom plate, and two partitions are fixedly connected to the inner wall of the sedimentation box, and a drain outlet 1 and a drain outlet 2 are respectively provided on the two partitions. The drain outlet 1 is arranged above the drain outlet 2, and a defoaming chamber is provided between the drain outlet 2 and the drain outlet 1. A water inlet chamber is provided on the left side of the drain outlet 1, and a water outlet chamber is provided on the right side of the drain outlet 2. A water outlet pipe is connected to the right side of the sedimentation box, and the water outlet pipe is fixedly connected to the sedimentation box, and a valve 1 is provided on the water outlet pipe.

[0008] Furthermore, the top surfaces of the two partitions are fixedly connected with a support plate, and the support plate is arranged above the defoaming chamber. The top surface of the support plate is fixedly connected with a motor 1, and the output end of the motor 1 is fixedly connected with a rotating rod 1 through a coupling. The outer wall of the rotating rod 1 is provided with two sliding grooves, and the inner walls of the two sliding grooves are slidably connected with a slider, and the outer wall of the slider is fixedly connected with a plurality of defoaming blades.

[0009] Furthermore, the inner wall of the defoaming chamber is fixedly connected to two sliding rods, the outer walls of the two sliding rods are slidably connected to connecting blocks, an airbag is fixedly connected between the two connecting blocks, the top surface of the airbag is fixedly connected to a connecting plate, the top surface of the connecting plate is rotatably connected to the bottom surface of the defoaming blade, and the airbag is sleeved on the outer wall of rotating rod one.

[0010] Furthermore, the cleaning mechanism includes a filter box fixedly connected to the bottom plate, the inner wall of the filter box is fixedly connected with a filter plate, the end of the water outlet pipe away from the sedimentation box extends to the interior of the filter box, and the connection between the water outlet pipe and the filter box is located below the filter plate.

[0011] Furthermore, the top surface of the filter box is fixedly connected with motor 2, the output end of motor 2 is fixedly connected with rotating rod 2 through a coupling, the bottom end of rotating rod 2 is fixedly connected with a sealing sleeve, the inner wall of the sealing sleeve is slidably connected with a piston, the bottom surface of the piston is fixedly connected with rotating rod 3, the outer wall of rotating rod 3 is fixedly connected with four limiting slide rails, rotating rod 3 is slidably connected to the inner wall of the sealing sleeve, the bottom end of rotating rod 3 slides and extends to the bottom of the sealing sleeve, the bottom end of rotating rod 3 is fixedly connected with rotating rod 4, the bottom end of rotating rod 4 slides and extends to the bottom of the filter plate, the bottom end of rotating rod 4 is fixedly connected with several cleaning brushes, and the several cleaning brushes are in contact with the bottom surface of the filter plate.

[0012] Furthermore, a spring is wound around the outer wall of the rotating rod 3, and the spring is located inside the sealing sleeve. One end of the spring is fixedly connected to the piston, and the other end of the spring is fixedly connected to the inner wall of the sealing sleeve.

[0013] Furthermore, the circulation mechanism includes a water inlet pipe connected to the outer wall of the sedimentation box, the water inlet pipe is connected to the inside of the water inlet cavity, the water inlet pipe is fixedly connected to the sedimentation box, and a valve 2 is arranged on the outer wall of the water inlet pipe.

[0014] Furthermore, a liquid pump is fixedly connected to the rear side of the sedimentation tank, an end of the valve two away from the sedimentation tank is fixedly connected to the output end of the liquid pump, an input end of the liquid pump is fixedly connected to a connecting pipe, an end of the connecting pipe away from the liquid pump extends to the interior of the filter box, and a connection between the connecting pipe and the filter box is located above the filter plate, and a drain pipe is provided on the outer wall of the water inlet pipe, and a valve three is provided on the drain pipe.

[0015] The present invention has the following beneficial effects:

[0016] 1. A filtering mechanism is provided, and the sedimentation box is used for preliminary sedimentation of the wastewater. After the wastewater is poured into the water inlet chamber, the water level rises. When the water level in the water inlet chamber is higher than the height of the drain outlet, the large particles of impurities in the wastewater slowly settle under the action of gravity, and the lighter small particles in the sewage slowly flow into the defoaming chamber together with the sewage. When the sewage in the defoaming chamber slowly rises, it will drive the air bag inside the defoaming chamber to rise, and the sliding rod and the connecting block cooperate with each other so that the connecting plate can rise steadily. At this time, multiple defoaming blades will float to the surface of the sewage in the defoaming chamber. At this time, the motor on the support plate can be driven to drive the rotating rod to rotate, so that the rotating rod drives the slider and multiple defoaming blades to rotate. The foam on the surface of the sewage is quickly removed to prevent the foam from staying on the water surface for a long time. This mechanism of quickly removing foam not only improves the efficiency of sewage treatment, but also effectively improves the quality of treated water. When the sewage water level inside the defoaming chamber is higher than the drain outlet two, the sewage is poured into the outlet chamber through the drain outlet two, and the sewage is subjected to secondary sedimentation, thereby further improving the sewage treatment effect. At the same time, while continuously pouring sewage into the water inlet chamber, the valve one can be opened to pour the sewage in the outlet chamber into the filter box through the outlet pipe. Due to the height difference between the sedimentation box and the filter box, the height of the sedimentation box is greater than that of the filter box, and the sewage will flow into the filter box along the outlet pipe. At this time, the valve four is in a closed state.

[0017] 2. By providing a cleaning mechanism, after the settled sewage slowly flows into the filter box, the sewage water level inside the filter box rises. After the sewage is not in the filter plate, the filter plate can retain small particles of impurities in the sewage under the filter plate to filter the sewage, thereby preventing the small particles of impurities in the sewage from affecting the liquid pump during the subsequent transportation and treatment process. While the water level in the filter box continues to rise, the motor 2 can be turned on to drive the rotating rod 2 to rotate. Since the limiting slide rail and the rotating rod 3 cooperate with each other, the rotating rod 3 can only slide up and down on the inner wall of the sealing sleeve, and the rotating rod 3 can be driven to rotate while the sealing sleeve rotates, and the spring is always in a compressed state, so that the cleaning brush can fit tightly on the bottom surface of the filter plate, and the rotating rod 2 drives the sealing sleeve and the rotating rod 4 to rotate, so that multiple cleaning brushes can fully scrub the bottom surface of the filter plate to ensure the long-term and effective filtering effect of the filter plate.

[0018] 3. By setting up a circulation mechanism, when the water level in the filter box is higher than the connecting pipe, the liquid pump can be driven to pump the sewage above the filter plate into the water inlet pipe through the connecting pipe. At this time, valve two can be closed and valve three can be opened. The filtered sewage is discharged through the drain pipe to facilitate subsequent treatment of the sewage. When observing the sewage at the drain pipe, until the filtering effect is not ideal, valve three can be closed and valve two can be opened to circulate the sewage to the water inlet chamber for secondary sedimentation filtration to improve the sewage treatment effect.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a rear view structural schematic diagram of the present invention;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the defoaming blade of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the sedimentation box of the present invention;

[0026] Figure 6It is a structural schematic diagram of the cleaning mechanism of the present invention;

[0027] Figure 7 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0028] Figure 8 for Figure 3 Schematic diagram of the enlarged structure at point B in the middle.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] 1. Bottom plate; 2. Filter mechanism; 3. Cleaning mechanism; 4. Filter plate; 5. Circulation mechanism; 21. Sedimentation box; 22. Partition plate; 23. Drain port 1; 24. Drain port 2; 25. Defoaming chamber; 26. Water inlet chamber; 27. Water outlet chamber; 28. Water outlet pipe; 29. ​​Valve 1; 291. Support plate; 292. Motor 1; 293. Rotating rod 1; 294. Slide; 295. Sliding block; 296. Defoaming blade; 297. Slide rod; 298, connecting block; 299, air bag; 2991, connecting plate; 31, filter box; 32, motor two; 33, rotating rod two; 34, sealing sleeve; 35, piston; 36, rotating rod three; 37, limiting slide rail; 38, spring; 39, rotating rod four; 391, cleaning brush; 51, water inlet pipe; 52, valve two; 53, drain pipe; 54, valve three; 55, liquid pump; 56, valve four; 57, connecting pipe. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-8 As shown, the present invention is a system for treating wastewater in a ternary lithium battery recovery process, comprising a bottom plate 1, on which a filtering mechanism 2, a cleaning mechanism 3 and a circulation mechanism 5 are arranged;

[0033] The filtering mechanism 2 includes a sedimentation box 21 fixedly connected to the top surface of the bottom plate 1, and the inner wall of the sedimentation box 21 is fixedly connected to two partitions 22, and the two partitions 22 are respectively provided with a drain port 1 23 and a drain port 24, and the drain port 1 23 is arranged above the drain port 24, and a defoaming chamber 25 is provided between the drain port 24 and the drain port 1 23, and a water inlet chamber 26 is provided on the left side of the drain port 1 23, and a water outlet chamber 27 is provided on the right side of the drain port 24, and a water outlet pipe 28 is provided on the right side of the sedimentation box 21, and the water outlet pipe 28 is fixedly connected to the sedimentation box 21, and a valve 1 29 is provided on the water outlet pipe 28, and the top surfaces of the two partitions 22 are fixedly connected to a support plate 291, and the support plate 291 is arranged above the defoaming chamber 25, and the top surface of the support plate 291 A motor 292 is fixedly connected, and the output end of the motor 292 is fixedly connected to a rotating rod 293 through a coupling. The outer wall of the rotating rod 293 is provided with two slide grooves 294, and the inner walls of the two slide grooves 294 are slidably connected with sliders 295. The outer wall of the slider 295 is fixedly connected with a plurality of defoaming blades 296. The inner wall of the defoaming chamber 25 is fixedly connected with two slide rods 297, and the outer walls of the two slide rods 297 are slidably connected with connecting blocks 298. An air bag 299 is fixedly connected between the two connecting blocks 298. The top surface of the air bag 299 is fixedly connected with a connecting plate 2991, and the top surface of the connecting plate 2991 is rotatably connected to the bottom surface of the defoaming blade 296. The air bag 299 is sleeved on the outer wall of the rotating rod 293, and a filtering mechanism 2 is provided, and a sedimentation box 2 1 is used for preliminary sedimentation of wastewater. After the wastewater is poured into the water inlet chamber 26, the water level rises. When the water level in the water inlet chamber 26 is higher than the height of the drain outlet 23, the large particles of impurities in the wastewater slowly settle under the action of gravity, and the lighter small particles in the sewage slowly flow into the defoaming chamber 25 together with the sewage. When the sewage in the defoaming chamber 25 slowly rises, it will drive the air bag 299 in the defoaming chamber 25 to rise, and the slide bar 297 and the connecting block 298 cooperate with each other, so that the connecting plate 2991 can rise smoothly. At this time, multiple defoaming blades 296 will float to the surface of the sewage in the defoaming chamber 25. At this time, the motor 292 on the support plate 291 can be driven to drive the rotating rod 293 to rotate, so that the rotating rod 293 drives the slider 295 and multiple defoaming blades. The blades 296 rotate to quickly remove the foam on the surface of the sewage to prevent the foam from staying on the water surface for a long time. This mechanism of quickly removing foam not only improves the efficiency of sewage treatment, but also effectively improves the quality of the treated water. When the sewage water level in the defoaming chamber 25 is higher than the drain outlet 24, the sewage is poured into the outlet chamber 27 through the drain outlet 24 to perform secondary sedimentation of the sewage, thereby further improving the sewage treatment effect. At the same time, while continuously pouring sewage into the water inlet chamber 26, the valve 29 can be opened to pour the sewage in the outlet chamber 27 into the filter box 31 through the outlet pipe 28. Since there is a height difference between the sedimentation box 21 and the filter box 31, the height of the sedimentation box 21 is greater than that of the filter box 31, and the sewage will flow into the filter box 31 along the outlet pipe 28.At this time, valve 4 56 is in a closed state.

[0034] The cleaning mechanism 3 includes a filter box 31 fixedly connected to the bottom plate 1, the inner wall of the filter box 31 is fixedly connected to the filter plate 4, the end of the water outlet pipe 28 away from the sedimentation box 21 extends to the inside of the filter box 31, the connection between the water outlet pipe 28 and the filter box 31 is located below the filter plate 4, the top surface of the filter box 31 is fixedly connected to the motor 2 32, the output end of the motor 2 32 is fixedly connected to the rotating rod 2 33 through a coupling, the bottom end of the rotating rod 2 33 is fixedly connected to the sealing sleeve 34, the inner wall of the sealing sleeve 34 is slidably connected to the piston 35, and the bottom surface of the piston 35 is fixedly connected to The outer wall of the rotating rod 36 is fixedly connected with four limiting slide rails 37, the rotating rod 36 is slidably connected with the inner wall of the sealing sleeve 34, the bottom end of the rotating rod 36 slides and extends to the bottom of the sealing sleeve 34, the bottom end of the rotating rod 36 is fixedly connected with the rotating rod 4 39, the bottom end of the rotating rod 4 39 slides and extends to the bottom of the filter plate 4, the bottom end of the rotating rod 4 39 is fixedly connected with a plurality of cleaning brushes 391, and the plurality of cleaning brushes 391 are in contact with the bottom surface of the filter plate 4, the outer wall of the rotating rod 36 is wound with a spring 38, the spring 38 is located inside the sealing sleeve 34, and the spring 38 is elastic. One end of the spring 38 is fixedly connected to the piston 35, and the other end of the spring 38 is fixedly connected to the inner wall of the sealing sleeve 34. By providing the cleaning mechanism 3, after the settled sewage slowly flows into the filter box 31, the sewage water level in the filter box 31 rises. After the sewage submerges the filter plate 4, the filter plate 4 can retain small particles of impurities in the sewage under the filter plate 4, and filter the sewage to prevent the small particles of impurities in the sewage from affecting the liquid pump 55 during the subsequent transportation process. While the water level in the filter box 31 continues to rise, the motor 2 32 can be turned on. , so that the motor 2 32 drives the rotating rod 2 33 to rotate. Since the limiting slide rail 37 cooperates with the rotating rod 36, the rotating rod 36 can only slide up and down on the inner wall of the sealing sleeve 34, and the rotating rod 36 can be driven to rotate while the sealing sleeve 34 rotates. The spring 38 is always in a compressed state, so that the cleaning brush 391 can be tightly attached to the bottom surface of the filter plate 4. The rotating rod 2 33 drives the sealing sleeve 34 and the rotating rod 4 39 to rotate, so that multiple cleaning brushes 391 can fully brush the bottom surface of the filter plate 4 to ensure the long-term and effective filtering effect of the filter plate 4.

[0035] The circulation mechanism 5 includes a water inlet pipe 51 connected to the outer wall of the sedimentation box 21, the water inlet pipe 51 is connected to the inside of the water inlet chamber 26, the water inlet pipe 51 is fixedly connected to the sedimentation box 21, a valve 2 52 is arranged on the outer wall of the water inlet pipe 51, a liquid pump 55 is fixedly connected to the rear side of the sedimentation box 21, an end of the valve 2 52 away from the sedimentation box 21 is fixedly connected to the output end of the liquid pump 55, and a connecting pipe 57 is fixedly connected to the input end of the liquid pump 55, and an end of the connecting pipe 57 away from the liquid pump 55 extends to the inside of the filter box 31, and the connection between the connecting pipe 57 and the filter box 31 is located above the filter plate 4. There is a drain pipe 53, on which a valve three 54 is arranged. By providing a circulation mechanism 5, when the water level in the filter box 31 is higher than the connecting pipe 57, the liquid pump 55 can be driven to pump the sewage above the filter plate 4 into the water inlet pipe 51 through the connecting pipe 57. At this time, the valve two 52 can be closed and the valve three 54 can be opened. The filtered sewage is discharged through the drain pipe 53 to facilitate subsequent treatment of the sewage. When observing the sewage at the drain pipe 53, when the filtering effect is not ideal, the valve three 54 can be closed and the valve two 52 can be opened to circulate the sewage to the water inlet chamber 26 for secondary sedimentation filtration to improve the sewage treatment effect.

[0036] A specific application of this embodiment is: by providing a filtering mechanism 2, the sedimentation box 21 is used for preliminary sedimentation of the wastewater. After the wastewater is poured into the water inlet chamber 26, the water level rises. When the water level in the water inlet chamber 26 is higher than the height of the drain outlet 23, the large particles of impurities in the wastewater slowly settle under the action of gravity, and the lighter small particles in the sewage will slowly flow into the defoaming chamber 25 together with the sewage. When the sewage in the defoaming chamber 25 slowly rises, it will drive the air bag 299 in the defoaming chamber 25 to rise, and the sliding rod 297 and the connecting block 298 cooperate with each other, so that the connecting plate 2991 can rise smoothly. At this time, multiple defoaming blades 296 will float to the surface of the sewage in the defoaming chamber 25. At this time, the motor 292 on the support plate 291 can be driven to drive the rotating rod 293 to rotate, so that the rotating rod 293 drives the sliding block 2 95 and a plurality of defoaming blades 296 rotate to quickly remove the foam on the surface of the sewage to prevent the foam from staying on the water surface for a long time. This mechanism of quickly removing foam not only improves the efficiency of sewage treatment, but also effectively improves the quality of the treated water. When the sewage water level in the defoaming chamber 25 is higher than the drain outlet 24, the sewage is poured into the outlet chamber 27 through the drain outlet 24 to perform secondary sedimentation on the sewage, thereby further improving the sewage treatment effect. At the same time, when the sewage is continuously poured into the water inlet chamber 26, the valve 29 can be opened to pour the sewage in the outlet chamber 27 into the filter box 31 through the outlet pipe 28. Since there is a height difference between the sedimentation box 21 and the filter box 31, the height of the sedimentation box 21 is greater than that of the filter box 31, and the sewage will flow into the filter box 31 along the outlet pipe 28. At this time, the valve 456 is in a closed state;

[0037] By providing a cleaning mechanism 3, after the settled sewage slowly flows into the filter box 31, the sewage water level in the filter box 31 rises. After the sewage passes through the filter plate 4, the filter plate 4 can retain small particles of impurities in the sewage under the filter plate 4, filter the sewage, and prevent the small particles of impurities in the sewage from affecting the liquid pump 55 during the subsequent transportation process. While the water level in the filter box 31 continues to rise, the motor 2 32 can be turned on, so that the motor 2 32 drives the rotating rod 2 33 to rotate. Since the limiting slide rail 37 and the rotating rod 3 36 cooperate with each other, the rotating rod 3 36 can only slide up and down on the inner wall of the sealing sleeve 34, and the rotating rod 3 36 can be driven to rotate while the sealing sleeve 34 rotates, and the spring 38 is always in a compressed state, so that the cleaning brush 391 can be tightly attached to the bottom surface of the filter plate 4, and the rotating rod 2 33 drives the sealing sleeve 34 and the rotating rod 4 39 to rotate, so that the multiple cleaning brushes 391 can fully scrub the bottom surface of the filter plate 4, ensuring the long-term and effective filtering effect of the filter plate 4.

[0038] By providing the circulation mechanism 5, when the water level in the filter box 31 is higher than the connecting pipe 57, the liquid pump 55 can be driven to pump the sewage above the filter plate 4 into the water inlet pipe 51 through the connecting pipe 57. At this time, the valve 2 52 can be closed and the valve 3 54 can be opened. The filtered sewage is discharged through the drain pipe 53 to facilitate subsequent treatment of the sewage. When observing the sewage in the drain pipe 53, when the filtering effect is not ideal, the valve 3 54 can be closed and the valve 2 52 can be opened to circulate the sewage to the water inlet chamber 26 for secondary sedimentation filtration to improve the sewage treatment effect.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A system for treating wastewater from ternary lithium battery recovery, comprising a bottom plate (1), characterized in that: The bottom plate (1) is provided with a filtering mechanism (2), a cleaning mechanism (3) and a circulation mechanism (5); The filtering mechanism (2) comprises a sedimentation box (21) fixedly connected to the top surface of the bottom plate (1); two partitions (22) are fixedly connected to the inner wall of the sedimentation box (21); a drain outlet 1 (23) and a drain outlet 2 (24) are respectively provided on the two partitions (22); the drain outlet 1 (23) is arranged above the drain outlet 2 (24); a defoaming chamber (25) is provided between the drain outlet 2 (24) and the drain outlet 1 (23); a water inlet chamber (26) is provided on the left side of the drain outlet 1 (23); a water outlet chamber (27) is provided on the right side of the drain outlet 2 (24); a water outlet pipe (28) is provided on the right side of the sedimentation box (21); the water outlet pipe (28) is fixedly connected to the sedimentation box (21); and a valve 1 (29) is provided on the water outlet pipe (28).

2. The system for treating wastewater from ternary lithium battery recovery according to claim 1, characterized in that: The top surfaces of the two partitions (22) are fixedly connected with a support plate (291), and the support plate (291) is arranged above the defoaming chamber (25). The top surface of the support plate (291) is fixedly connected with a motor 1 (292), and the output end of the motor 1 (292) is fixedly connected with a rotating rod 1 (293) through a coupling. The outer wall of the rotating rod 1 (293) is provided with two sliding grooves (294), and the inner walls of the two sliding grooves (294) are slidably connected with a slider (295), and the outer wall of the slider (295) is fixedly connected with a plurality of defoaming blades (296).

3. The system for treating wastewater from ternary lithium battery recovery according to claim 2, characterized in that: The inner wall of the defoaming chamber (25) is fixedly connected to two sliding rods (297), the outer walls of the two sliding rods (297) are slidably connected to connecting blocks (298), an airbag (299) is fixedly connected between the two connecting blocks (298), the top surface of the airbag (299) is fixedly connected to a connecting plate (2991), the top surface of the connecting plate (2991) is rotatably connected to the bottom surface of the defoaming blade (296), and the airbag (299) is sleeved on the outer wall of the rotating rod (293).

4. The system for treating wastewater from ternary lithium battery recovery according to claim 3, characterized in that: The cleaning mechanism (3) comprises a filter box (31) fixedly connected to the bottom plate (1); a filter plate (4) is fixedly connected to the inner wall of the filter box (31); an end of the water outlet pipe (28) away from the sedimentation tank (21) extends to the interior of the filter box (31); and a connection between the water outlet pipe (28) and the filter box (31) is located below the filter plate (4).

5. The system for treating wastewater from ternary lithium battery recovery according to claim 4, characterized in that: The top surface of the filter box (31) is fixedly connected to a second motor (32); the output end of the second motor (32) is fixedly connected to a second rotating rod (33) via a coupling; the bottom end of the second rotating rod (33) is fixedly connected to a sealing sleeve (34); the inner wall of the sealing sleeve (34) is slidably connected to a piston (35); the bottom surface of the piston (35) is fixedly connected to a third rotating rod (36); the outer wall of the third rotating rod (36) is fixedly connected to four limiting slide rails (37); The rotating rod three (36) is slidably connected to the inner wall of the sealing sleeve (34), and the bottom end of the rotating rod three (36) slides and extends to the bottom of the sealing sleeve (34). The bottom end of the rotating rod three (36) is fixedly connected to the rotating rod four (39), and the bottom end of the rotating rod four (39) slides and extends to the bottom of the filter plate (4). The bottom end of the rotating rod four (39) is fixedly connected to a plurality of cleaning brushes (391), and the plurality of cleaning brushes (391) are in contact with the bottom surface of the filter plate (4).

6. The system for treating wastewater from ternary lithium battery recovery according to claim 5, characterized in that: A spring (38) is wound around the outer wall of the rotating rod (36), and the spring (38) is located inside the sealing sleeve (34). One end of the spring (38) is fixedly connected to the piston (35), and the other end of the spring (38) is fixedly connected to the inner wall of the sealing sleeve (34).

7. The system for treating wastewater from ternary lithium battery recovery according to claim 6, characterized in that: The circulation mechanism (5) comprises a water inlet pipe (51) connected to and arranged on the outer wall of the sedimentation tank (21); the water inlet pipe (51) is communicated with the interior of the water inlet chamber (26); the water inlet pipe (51) is fixedly connected to the sedimentation tank (21); and a second valve (52) is arranged on the outer wall of the water inlet pipe (51).

8. The system for treating wastewater from ternary lithium battery recovery according to claim 6, characterized in that: A liquid pump (55) is fixedly connected to the rear side of the sedimentation box (21); an end of the valve 2 (52) away from the sedimentation box (21) is fixedly connected to the output end of the liquid pump (55); an input end of the liquid pump (55) is fixedly connected to a connecting pipe (57); an end of the connecting pipe (57) away from the liquid pump (55) extends to the interior of the filter box (31); a connection point between the connecting pipe (57) and the filter box (31) is located above the filter plate (4); a drain pipe (53) is provided on the outer wall of the water inlet pipe (51); and a valve 3 (54) is provided on the drain pipe (53).

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