Nickel-containing electroplating wastewater treatment equipment

Abstract

The invention discloses nickel-containing electroplating wastewater treatment equipment, and relates to the technical field of wastewater treatment. Comprising a cylinder body, and further comprises a first filter frame arranged in the cylinder body, the filtering mechanism is mounted below the first filtering frame and comprises a second filtering frame arranged below the first filtering frame, a third lifting rod connected with the second filtering frame and a third filtering frame connected with the third lifting rod, and the third lifting rod is used for adjusting the distance between the third filtering frame and the second filtering frame; the frame body is mounted outside the cylinder body; the first lifting rod is arranged on the frame body; the cover plate is arranged at the telescopic end of the first lifting rod; the liquid inlet pipeline is mounted in the cover plate; the motor is mounted on the cover plate, the rotating shaft is connected with the output end of the motor, and a stirring mechanism is arranged outside the rotating shaft; the feeding pipeline is arranged outside the cylinder body; and the second lifting rod is arranged below the cover plate. The nickel-containing electroplating wastewater treatment equipment achieves the purpose of improving the use efficiency of the equipment.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a nickel-containing electroplating wastewater treatment device. Background Technology

[0002] Nickel-containing wastewater is a common type of wastewater in the electroplating industry. The nickel and its compounds released into this wastewater are toxic and internationally recognized carcinogens. Nickel can accumulate in soil, affecting crop growth, and also impacts fisheries in aquatic environments. More seriously, nickel in water can combine with carbonyl compounds to form hydroxyl nickel, which is even more toxic. If this toxicity is transmitted to humans through the food chain, it can have adverse effects. Therefore, the treatment of nickel-containing electroplating wastewater is of paramount importance.

[0003] Chinese patent CN117658360A discloses a device and method for treating nickel-containing electroplating wastewater, including a filter tank and a reaction tank. The filter tank is equipped with a first stirring mechanism to agitate the wastewater, ensuring sufficient contact between the activated carbon in the filter mesh and the wastewater, thus improving the adsorption effect of the activated carbon. The upper surface of the filter mesh is made of filter wire to prevent solid matter from obstructing the activated carbon, thereby ensuring the effective adsorption of metal ions from the wastewater. However, the process requires two tanks to complete the filtration and reaction of the nickel-containing electroplating wastewater, making the operation cumbersome and requiring cleaning of both tanks afterward. Summary of the Invention

[0004] To overcome the problems of cumbersome operation and the need for cleaning both cylinders after the process of filtering and reacting nickel-containing electroplating wastewater, this invention provides a nickel-containing electroplating wastewater treatment device, including a cylinder, and further comprising: The first filter frame is installed inside the cylinder; The filter mechanism is installed below the first filter frame. The filter mechanism includes a second filter frame disposed below the first filter frame, a third lifting rod connected to the second filter frame, and a third filter frame connected to the third lifting rod. The third lifting rod is used to adjust the distance between the third filter frame and the second filter frame.

[0005] Preferably, it further includes: The frame installed on the outside of the cylinder and the first lifting rod set on the frame; A cover plate is installed on the telescopic end of the first lifting rod and an inlet pipe is installed inside the cover plate; The motor is mounted on the cover plate and the shaft is connected to the output end of the motor. The shaft is equipped with a stirring mechanism. The feed pipe is installed on the outside of the cylinder; The second lifting rod is located below the cover plate, and the first filter frame is connected to the telescopic end of the second lifting rod.

[0006] Preferably, the filtration mechanism further includes: An adjustment column is located below the first filter frame, and the second filter frame is connected to the end of the adjustment column away from the first filter frame. A second annular groove and a second filter hole are formed inside the second filter frame; The second filter hole and the second groove are formed inside the second filter frame.

[0007] Preferably, the filtration mechanism further includes: A channel located inside the third filter frame; A clip installed inside the third filter frame, the clip being adapted to the second filter hole.

[0008] Preferably, the stirring mechanism includes: A first scraper is installed on the outside of the rotating shaft and a first through hole is opened inside the first scraper; The mounting brackets are arranged on the first scraper, and there are multiple mounting brackets. One of the mounting brackets has a turntable above it, which is sleeved on the outside of the rotating shaft. The other mounting brackets have guide plates above them. The turntable and guide plates are used to guide part of the wastewater.

[0009] Preferably, the stirring mechanism further includes: The connecting shaft installed below the rotating shaft; The support rod is mounted on the connecting shaft, and the arc-shaped plate is connected to the support rod.

[0010] Preferably, the stirring mechanism further includes: A retaining ring is sleeved on the outside of the rotating shaft, and the retaining ring is engaged inside the second annular groove; The locking rod is installed below the locking ring and is engaged inside the second locking groove; The collection frame is located outside the positioning ring, and the corner plate is slidably connected inside the collection frame. The collection frame is adapted to the first groove and the second groove.

[0011] Preferably, the stirring mechanism further includes: The fourth lifting rod is installed above the locking ring, and the first outer ring is connected to the telescopic end of the fourth lifting rod. The first outer ring is sleeved on the outside of the rotating shaft. The first adjusting rod is located below the first outer ring. The end of the first adjusting rod away from the first outer ring is connected to the corner plate. The corner plate is driven to descend by the fourth lifting rod. When the corner plate squeezes solid matter or flocculents, the residual water flows out through the first through hole of the first scraper or the second through hole of the second scraper.

[0012] Preferably, the stirring mechanism further includes: A second scraper is disposed below the first outer ring and a second through hole is formed inside the second scraper; The push rod installed above the first outer ring and the second outer ring connected to the end of the push rod away from the first outer ring are driven by the push rod to repeatedly strike the turntable, promoting the flow of wastewater on the turntable.

[0013] This invention provides a device for treating nickel-containing electroplating wastewater. It has the following beneficial effects: 1. This nickel-containing electroplating wastewater treatment equipment employs a filtration mechanism to perform two filtration processes on the nickel-containing electroplating wastewater. Existing equipment requires two separate cylinders to complete the filtration and reaction processes, which is cumbersome and necessitates cleaning both cylinders afterward. Therefore, this new filtration mechanism uses a locking block on the third filter frame to block the second filter hole of the second filter frame, thereby intercepting the nickel-containing electroplating wastewater and completing the filtration and reaction processes within a single cylinder, thus resolving the aforementioned problems.

[0014] 2. This nickel-containing electroplating wastewater treatment equipment, through the setting of a filtration mechanism, uses a first filter frame to complete the interception of solid substances in the nickel-containing electroplating wastewater; uses a second and third filter frame to complete the interception of nickel-containing electroplating wastewater, providing working space for the reaction of nickel-containing electroplating wastewater and reagents; and uses a second and third filter frame to complete the separation of wastewater and flocculants.

[0015] 3. This nickel-containing electroplating wastewater treatment equipment uses a stirring mechanism to agitate the nickel-containing electroplating wastewater. It also includes a turntable, guide plate, and corner plate to promote the wastewater to fall into the first or second filter frame in different directions. The equipment scrapes away solids in the first filter frame to prevent them from clogging the first filter frame and affecting the flow of wastewater.

[0016] 4. This nickel-containing electroplating wastewater treatment equipment uses a stirring mechanism to collect solids in the first filter frame and flocculants in the second filter frame. Existing treatment equipment requires manual cleaning of multiple filter screens and collection of solids and flocculants after separate interception, which is cumbersome. Therefore, a detachable retaining ring and collection frame are installed. After the first scraper scrapes the solids or flocculants into the collection frame, it facilitates worker handling of the solids or flocculants within the collection frame. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the structure of the first filter frame of the present invention; Figure 4This is a schematic diagram of the filtration mechanism of the present invention; Figure 5 For the present invention Figure 4 Schematic diagram of the structure at point A; Figure 6 This is a schematic diagram of the stirring mechanism of the present invention; Figure 7 This is a schematic diagram of the stirring mechanism of the present invention from another perspective; Figure 8 For the present invention Figure 7 A schematic diagram of the structure at point B.

[0018] In the diagram: 1. Cylinder; 2. Frame; 3. First lifting rod; 4. Cover plate; 5. Motor; 6. First filter frame; 7. Filtration mechanism; 701. Adjusting column; 702. Second filter frame; 703. Third lifting rod; 704. Third filter frame; 705. Second annular groove; 706. Second slot; 707. Second filter hole; 708. Second groove; 709. Channel; 710. Locking block; 8. Rotating shaft; 9. Stirring mechanism; 901. First 902. Scraper; 903. Mounting bracket; 904. Guide plate; 905. Turntable; 906. Connecting shaft; 907. Support rod; 908. Arc plate; 909. First outer ring; 910. Push rod; 911. Second outer ring; 912. First adjusting rod; 913. Locking ring; 914. Locking rod; 915. Collection frame; 916. Angle plate; 917. Fourth lifting rod; 918. Second scraper; 10. Feed pipe; 11. Second lifting rod. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0020] like Figures 1-8 As shown, the present invention provides a technical solution: a nickel-containing electroplating wastewater treatment device, which is described below.

[0021] Includes a cylinder 1, which consists of a straight cylinder, a constricted cylinder, and a vertical cylinder from top to bottom. The vertical cylinder has a valve at its bottom. Also includes: The first filter frame 6 is installed inside the cylinder 1; The filter mechanism 7 is installed below the first filter frame 6. The filter mechanism 7 includes a second filter frame 702 disposed below the first filter frame 6, a third lifting rod 703 connected to the second filter frame 702, and a third filter frame 704 connected to the third lifting rod 703. The third lifting rod 703 is used to adjust the distance between the third filter frame 704 and the second filter frame 702. The third lifting rod 703 is set as an electric push rod 909. The frame 2 installed outside the cylinder 1 and the first lifting rod 3 set on the frame 2, wherein the first lifting rod 3 is set as an electric push rod 909; The cover plate 4 is set on the telescopic end of the first lifting rod 3 and the liquid inlet pipe is installed inside the cover plate 4. The first lifting rod 3 is used to drive the cover plate 4 away from the cylinder 1, and the liquid inlet pipe is used to inject nickel-containing electroplating wastewater into the cylinder 1. The motor 5 and the rotating shaft 8 connected to the output end of the motor 5 are mounted on the cover plate 4. The rotating shaft 8 is equipped with a stirring mechanism 9. The feed pipe 10 is installed outside the cylinder 1 and is used to inject the agent into the cylinder 1. The second lifting rod 11 is located below the cover plate 4. The first filter frame 6 is connected to the telescopic end of the second lifting rod 11. The second lifting rod 11 is set as an electric push rod 909. The second lifting rod 11 is used to adjust the position of the first filter frame 6 and the filter mechanism 7.

[0022] When using the equipment, nickel-containing electroplating wastewater is injected into the cylinder 1 through the inlet pipe. Under the operation of the stirring mechanism 9 and the filtration mechanism 7, the solid substances in the nickel-containing electroplating wastewater are trapped in the first filter frame. The nickel-containing electroplating wastewater moves downward through the first filter frame and is injected into the cylinder 1 through the feed pipe 10. The reagent begins to react with the nickel-containing electroplating wastewater. After the reaction, the filtration mechanism 7 and the stirring mechanism 9 are adjusted, and the flocculants are placed in the second filter frame. The remaining liquid can be discharged through the bottom of the cylinder 1.

[0023] The filter unit 7 also includes: An adjusting column 701 is set below the first filter frame 6. The adjusting column 701 is a rod whose length can be manually adjusted. The second filter frame 702 is connected to the end of the adjusting column 701 away from the first filter frame 6. The first filter hole has a first annular groove and a first groove inside. The first filter hole has a first filter hole inside the first annular groove. A second annular groove 705 and a second filter hole 707 are formed inside the second filter frame 702; The second filter hole 707 and the second groove 708 are opened inside the second filter frame 702; Channel 709 is located inside the third filter frame 704; The locking block 710 is installed inside the third filter frame 704 and is adapted to the second filter hole 707.

[0024] The process of using filter unit 7 to filter solids from nickel-containing electroplating wastewater: In the initial state, the third lifting rod 703 is in the closed state, and at this time the locking block 710 on the third filter hole is locked into the second filter hole 707 of the second filter frame 702.

[0025] After the nickel-containing electroplating wastewater enters the cylinder 1, the solid matter is intercepted in the first filter frame 6. The stirring mechanism 9 promotes the movement of the solid matter in the first filter frame 6. The nickel-containing electroplating wastewater flows downward through the first filter hole into the second filter frame 702 and cannot continue to move.

[0026] The process of filtering flocculants using filter unit 7: The reagent enters between the first filter frame 6 and the second filter frame 702 through the feed pipe 10. During the stirring of the stirring mechanism 9, the flocculent gradually falls into the second filter frame 702. Then, the third lifting rod 703 is activated, which drives the third filter frame 704 to move downward. The locking block 710 gradually disengages from the second filter hole 707, and the flocculent remains in the second filter frame 702. The liquid flows downward through the second filter hole 707 and the channel 709. By opening the valve at the bottom of the cylinder 1, the test liquid can be collected.

[0027] By incorporating a filtration mechanism 7, nickel-containing electroplating wastewater undergoes two filtration processes. Existing equipment requires two separate cylinders 1 to complete the filtration and reaction processes, which is cumbersome and necessitates cleaning both cylinders 1 afterward. Therefore, the filtration mechanism 7 addresses this issue by using a locking block 710 on the third filter frame 704 to block the second filter hole 707 of the second filter frame 702, thereby intercepting the nickel-containing electroplating wastewater and completing the filtration and reaction processes within a single cylinder 1.

[0028] By setting up the filtration mechanism 7, the first filter frame 6 is used to intercept solid substances in the nickel-containing electroplating wastewater; the second filter frame 702 and the third filter frame 704 are used to intercept the nickel-containing electroplating wastewater, providing working space for the reaction between the nickel-containing electroplating wastewater and the reagents; the second filter frame 702 and the third filter frame 704 are used to separate the wastewater from the flocculants.

[0029] The stirring mechanism 9 includes: A first scraper 901 is installed on the outside of the rotating shaft 8 and a first through hole is opened inside the first scraper 901; Mounting brackets 902 are provided on the first scraper 901. Multiple mounting brackets 902 are provided. A turntable 904 is provided above one of the mounting brackets 902. The turntable 904 is sleeved on the outside of the rotating shaft 8. The upper surface of the turntable 904 is set as an arc surface. The height of the turntable 904 gradually decreases from the center outward. Guide plates 903 are provided above the other mounting brackets 902. The guide plates 903 are set as arc-shaped, and the arc surface faces the side away from the turntable 904. Connecting shaft 905 installed below rotating shaft 8; The support rod 906 and the arc plate 907 connected to the support rod 906 are provided on the connecting shaft 905. The arc plate 907 is in contact with the constricted cylinder position of the cylinder body 1. A locking ring 912 is sleeved on the outside of the rotating shaft 8, and the locking ring 912 is engaged inside the second annular groove 705; The locking rod 913 is installed below the locking ring 912 and is engaged inside the second locking slot 706. The collection frame 914 is set outside the positioning ring 912 and the corner plate 915 is slidably connected inside the collection frame 914. The lower surface of the corner plate 915 is rough and the upper surface of the corner plate 915 is set to a shape that is high in the middle and low at the edge, so that the wastewater can slide into the first filter frame 6 or the second filter frame 702. The fourth lifting rod 916 is installed above the locking ring 912 and the first outer ring 908 is connected to the telescopic end of the fourth lifting rod 916. The first outer ring 908 is sleeved on the outside of the rotating shaft 8. The fourth lifting rod 916 is set as an electric push rod 909. A first adjusting rod 911 is disposed below the first outer ring 908, and one end of the first adjusting rod 911 away from the first outer ring 908 is connected to the corner plate 915; A second scraper 917 is disposed below the first outer ring 908 and a second through hole is opened inside the second scraper 917. The second scraper 917 is connected to the first outer ring 908 through a second adjusting rod. A push rod 909 is installed above the first outer ring 908, and a second outer ring 910 is connected to the end of the push rod 909 away from the first outer ring 908.

[0030] The process of using stirring mechanism 9 to stir nickel-containing electroplating wastewater: The motor 5 is started, driving the rotating shaft 8 and the connecting shaft 905 to rotate. The rotating shaft 8 drives the first scraper 901, the mounting bracket 902, the guide plate 903, and the turntable 904 to rotate, while the connecting shaft 905 drives the arc plate 907 to rotate. As solid matter falls onto the first filter frame 6, it is scraped by the rotation of the first scraper 901, preventing solid matter from clogging the top of the first filter holes and affecting the flow of wastewater.

[0031] During the rotation of the first scraper 901, the first scraper 901 repeatedly enters and exits the collection frame 914 to prevent liquid residue from remaining in the collection frame 914. Furthermore, because the upper surface of the turntable 904 is arc-shaped, the height of the turntable 904 gradually decreases from the center outwards, facilitating the flow of wastewater in contact with the turntable 904 along the arc-shaped surface in a downward direction, thus extending the wastewater's travel distance. Since the guide plate 903 is arc-shaped, with its arc-shaped surface facing away from the turntable 904, it facilitates the movement of wastewater away from the turntable 904 during stirring, and disperses the direction of wastewater descent.

[0032] The process of mixing the reagents and wastewater using the stirring mechanism 9: As the reagent enters between the first filter frame 6 and the second filter frame 702, the reagent begins to react with the wastewater. Under the stirring of the mounting frame 902, the turntable 904 and the guide plate 903, the mixing of the two is accelerated.

[0033] Then, motor 5 is turned off, and cylinder 1 is left to stand until flocculation is complete. The third lifting rod 703 drives the third filter frame 704 to move downward, and the liquid flows downward through the second filter hole 707 and channel 709, while the flocculent remains in the second filter frame 702.

[0034] The process of collecting solids or flocculants using the stirring mechanism 9: Adjusting the stroke of the fourth lifting rod 916 causes the first outer ring 908, second adjusting rod, second scraper 917, first adjusting rod 911, and corner plate 915 to move downwards. At this time, the second scraper 917 blocks one side of the collection frame 914. Starting the motor 5 drives the rotating shaft 8 and the first scraper 901 to reciprocate. The first scraper 901 continuously scrapes solid matter or flocculent material on the first filter frame 6 or the second filter frame 702 into one side of the opening of the collection frame 914. Then, turning off the motor 5 leaves the first scraper 901 blocking the other side of the collection frame 914.

[0035] After the work is completed, start the first lifting rod 3. The first lifting rod 3 drives the cover plate 4, motor 5, rotating shaft 8, second lifting rod 11, stirring mechanism 9 and filtering mechanism 7 to move upward, and manually clean the collection box 914.

[0036] The stirring mechanism 9 is set to stir the nickel-containing electroplating wastewater. The turntable 904, guide plate 903 and corner plate 915 are set to promote the wastewater to fall into the first filter frame 6 or the second filter frame 702 in different directions. The solid matter in the first filter frame 6 is scraped to prevent the solid matter from clogging the first filter frame 6 and affecting the flow of wastewater.

[0037] By setting up a stirring mechanism 9, solid matter in the first filter frame and flocculent matter in the second filter frame are collected. Existing processing equipment requires workers to manually clean multiple filter screens and collect the solid matter and flocculent matter after separately intercepting them, which is cumbersome. Therefore, a detachable retaining ring 912 and a collection frame 914 are provided. After the first scraper 901 scrapes the solid matter or flocculent matter into the collection frame 914, it is easier for workers to handle the solid matter or flocculent matter inside the collection frame 914.

[0038] Working principle: In the initial state, the third lifting rod 703 is in the closed state, and at this time the locking block 710 on the third filter hole is locked into the second filter hole 707 of the second filter frame 702.

[0039] The motor 5 is started, which drives the rotating shaft 8 and the connecting shaft 905 to rotate. The rotating shaft 8 drives the first scraper 901, the mounting bracket 902, the guide plate 903, and the turntable 904 to rotate. The connecting shaft 905 drives the arc plate 907 to rotate. Nickel-containing electroplating wastewater is injected into the cylinder 1 through the liquid inlet pipe. After the nickel-containing electroplating wastewater enters the cylinder 1, the solid matter is intercepted in the first filter frame 6.

[0040] As solid matter falls onto the first filter frame 6, it is scraped by the rotation of the first scraper 901, preventing it from clogging the first filter holes and affecting the flow of wastewater. The stirring mechanism 9 promotes the movement of solid matter in the first filter frame 6, and the nickel-containing electroplating wastewater flows downward through the first filter holes into the second filter frame 702. It is then blocked by the third filter frame 704 and cannot continue to flow.

[0041] During the rotation of the first scraper 901, the first scraper 901 repeatedly enters and exits the collection frame 914 to prevent liquid residue from remaining in the collection frame 914. Furthermore, because the upper surface of the turntable 904 is arc-shaped, the height of the turntable 904 gradually decreases from the center outwards, facilitating the flow of wastewater in contact with the turntable 904 along the arc-shaped surface in a downward direction, thus extending the wastewater's travel distance. Since the guide plate 903 is arc-shaped, with its arc-shaped surface facing away from the turntable 904, it facilitates the movement of wastewater away from the turntable 904 during stirring, and disperses the direction of wastewater descent.

[0042] The agent is injected into the cylinder 1 through the feed pipe 10. The agent enters the space between the first filter frame 6 and the second filter frame 702 through the feed pipe 10. The agent begins to react with the wastewater. Under the stirring of the mounting frame 902, the turntable 904 and the guide plate 903, the mixing of the two is accelerated.

[0043] Then, turn off motor 5, let the cylinder 1 stand still, and wait for flocculation to finish. Then, start the third lifting rod 703. The third lifting rod 703 drives the third filter frame 704 to move down. The locking block 710 gradually disengages from the second filter hole 707. The flocculent material stays in the second filter frame 702, while the liquid flows downward through the second filter hole 707 and the channel 709. Open the valve at the bottom of the cylinder 1 to collect the test liquid.

[0044] Adjusting the stroke of the fourth lifting rod 916 causes the first outer ring 908, second adjusting rod, second scraper 917, first adjusting rod 911, and corner plate 915 to move downwards. At this time, the second scraper 917 blocks one side of the collection frame 914. Starting the motor 5 drives the rotating shaft 8 and the first scraper 901 to reciprocate. The first scraper 901 continuously scrapes solid matter or flocculent material on the first filter frame 6 or the second filter frame 702 into one side of the opening of the collection frame 914. Then, turning off the motor 5 leaves the first scraper 901 blocking the other side of the collection frame 914.

[0045] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A nickel-containing electroplating wastewater treatment device, comprising a cylindrical body (1), characterized in that, Also includes: The first filter frame (6) is installed inside the cylinder (1); The filter mechanism (7) is installed below the first filter frame (6). The filter mechanism (7) includes a second filter frame (702) disposed below the first filter frame (6), a third lifting rod (703) connected to the second filter frame (702), and a third filter frame (704) connected to the third lifting rod (703). The third lifting rod (703) is used to adjust the distance between the third filter frame (704) and the second filter frame (702).

2. The nickel-containing electroplating wastewater treatment equipment according to claim 1, characterized in that: Also includes: The frame (2) installed outside the cylinder (1) and the first lifting rod (3) set on the frame (2); The cover plate (4) is set on the telescopic end of the first lifting rod (3) and the liquid inlet pipe is installed inside the cover plate (4); The motor (5) mounted on the cover plate (4) and the rotating shaft (8) connected to the output end of the motor (5) are provided with a stirring mechanism (9) on the outside of the rotating shaft (8). Feed pipe (10) installed outside the cylinder (1); The second lifting rod (11) is located below the cover plate (4), and the first filter frame (6) is connected to the telescopic end of the second lifting rod (11).

3. The nickel-containing electroplating wastewater treatment equipment according to claim 2, characterized in that: The filtration mechanism (7) further includes: An adjusting column (701) is provided below the first filter frame (6), and the second filter frame (702) is connected to the end of the adjusting column (701) away from the first filter frame (6); A second annular groove (705) is formed inside the second filter frame (702), and a second filter hole (707) is formed inside the second annular groove (705). The second filter hole (707) and the second groove (708) are opened inside the second filter frame (702).

4. The nickel-containing electroplating wastewater treatment equipment according to claim 3, characterized in that: The filtration mechanism (7) further includes: A channel (709) is opened inside the third filter frame (704). A locking block (710) is installed inside the third filter frame (704), the locking block (710) being adapted to the second filter hole (707).

5. The nickel-containing electroplating wastewater treatment equipment according to claim 4, characterized in that: The stirring mechanism (9) includes: A first scraper (901) is installed on the outside of the rotating shaft (8) and a first through hole is opened inside the first scraper (901); Mounting brackets (902) are provided on the first scraper (901). Multiple mounting brackets (902) are provided. A turntable (904) is provided above one of the mounting brackets (902). The turntable (904) is sleeved on the outside of the rotating shaft (8). Guide plates (903) are provided above the other mounting brackets (902).

6. The nickel-containing electroplating wastewater treatment equipment according to claim 5, characterized in that: The stirring mechanism (9) further includes: The connecting shaft (905) is installed below the rotating shaft (8); A support rod (906) and an arc plate (907) connected to the support rod (906) are provided on the connecting shaft (905).

7. The nickel-containing electroplating wastewater treatment equipment according to claim 6, characterized in that: The stirring mechanism (9) further includes: A locking ring (912) is sleeved on the outside of the rotating shaft (8), and the locking ring (912) is engaged inside the second annular groove (705); A locking rod (913) is installed below the locking ring (912), and the locking rod (913) is engaged inside the second locking groove (706); A collection frame (914) is provided outside the card holder ring (912), and a corner plate (915) is slidably connected inside the collection frame (914).

8. The nickel-containing electroplating wastewater treatment equipment according to claim 7, characterized in that: The stirring mechanism (9) further includes: The fourth lifting rod (916) installed above the locking ring (912) and the first outer ring (908) connected to the telescopic end of the fourth lifting rod (916) are fitted on the outside of the rotating shaft (8); The first adjusting rod (911) is located below the first outer ring (908), and the end of the first adjusting rod (911) away from the first outer ring (908) is connected to the corner plate (915).

9. The nickel-containing electroplating wastewater treatment equipment according to claim 8, characterized in that: The stirring mechanism (9) further includes: A second scraper (917) is disposed below the first outer ring (908) and a second through hole is formed inside the second scraper (917); A push rod (909) is installed above the first outer ring (908), and a second outer ring (910) is connected to the end of the push rod (909) away from the first outer ring (908).

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