A cobalt-containing wastewater treatment device

Abstract

This invention provides a cobalt-containing wastewater treatment device, belonging to the field of wastewater treatment technology, including a treatment tank and a screen. The treatment tank has an inlet at the top and an outlet at the bottom. The inlet is connected to the slag outlet of a filter device, and the outlet is connected to a concentration device via a pipe. A water pump is installed on the pipe connected to the outlet to pump the wastewater into the concentration device. The screen is installed inside the treatment tank, dividing the treatment tank into an inlet chamber and a storage chamber, with the inlet and outlet located on the inlet and storage chambers, respectively. The screen is used to block precipitates and allows wastewater to pass through, thus separating the precipitates and wastewater. With the above-described configuration, precipitates can be separated from wastewater, facilitating the collection of precipitates and enabling the recycling of the separated wastewater.

Description

Technical Field

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

[0002] Cobalt processing generates a large amount of sulfates containing nickel, cobalt, iron, and manganese, necessitating the treatment of wastewater containing these metals. In the prior art, Chinese utility model patent CN 208104125 U discloses a cobalt-containing wastewater treatment system, including a sedimentation tank, a filtration device, a concentration device, a heat exchange device, a cooling crystallization device, a centrifuge, a collection tank, and a water pump. Its principle is to add sodium hydroxide solution to the sedimentation tank to convert the nickel, cobalt, manganese, and iron sulfates in the cobalt workshop wastewater into hydroxide precipitates, simultaneously forming sodium sulfate. The supernatant is then concentrated, crystallized, and centrifuged to obtain sodium sulfate, thus separating and recycling the nickel, cobalt, iron, and manganese elements from the cobalt workshop wastewater with sodium sulfate.

[0003] In the above treatment system, the outlet of the sedimentation tank is connected to the inlet of the filtration device. Therefore, the precipitate and waste liquid after reaction in the sedimentation tank are discharged into the filtration device together. The precipitate is discharged from the slag outlet at the bottom of the filtration device, and the supernatant is discharged into the concentration device from the outlet at the top of the filtration device.

[0004] However, during the slag discharge process, waste liquid will be present in the discharged sediment, which is not conducive to the collection of sediment. Summary of the Invention

[0005] This invention provides a cobalt-containing wastewater treatment device, which aims to solve the technical problem that the existing slag discharge method is not conducive to the collection of precipitates.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A cobalt-containing wastewater treatment device is provided, comprising:

[0008] The processing tank has a feed inlet at the top and a liquid outlet at the bottom; the feed inlet is used to connect with the slag outlet of the filtration device, and the liquid outlet is used to connect with the concentration device; and

[0009] A screen is installed inside the processing tank; the screen divides the processing tank into a feed chamber and a storage chamber, with the feed inlet and the outlet located on the feed chamber and the storage chamber, respectively; the screen is used to block sediment and to allow wastewater to pass through, so as to separate sediment and wastewater.

[0010] The screen is inclined, and the processing box has a discharge port at the high end of the screen. A scraper is provided in the feeding chamber. The bottom end of the scraper contacts the upper surface of the screen, and the lower surface of the scraper forms an acute angle with the upper surface of the screen, forming a scraping area. The scraper has the freedom to slide from the low end of the screen to the high end of the screen.

[0011] As the scraper slides from the lower end of the screen to the upper end of the screen, the scraper can press down on the sediment in the scraping area to remove the wastewater from the sediment.

[0012] In one possible implementation, the screen has vertically continuous clearance grooves, and the cobalt-containing wastewater treatment equipment further includes:

[0013] A baffle is slidably disposed within the clearance groove; the upper surface of the baffle has a first state protruding from the upper surface of the screen and a second state coplanar with the upper surface of the screen.

[0014] A drive mechanism is provided on the processing box, and the drive mechanism is used to drive the baffle to slide.

[0015] The area between the baffle, the scraper, and the upper surface of the screen is a scraping area; when the scraper slides upward, it can squeeze the sediment in the scraping area under the blocking effect of the baffle.

[0016] When the scraper slides upward a preset distance, the driving mechanism drives the baffle to slide to the second state, so that the scraper and the sediment cross the clearance groove at the baffle.

[0017] In one possible implementation, there are several baffles, which are spaced apart along the lower end to the upper end of the screen.

[0018] In one possible implementation, the sidewall of the liquid storage chamber has a slide rail, and the sidewall of the feed chamber has a chute parallel to the screen; the chute has a first connection port near the lower end of the screen, and the slide rail has a second connection port near its bottom; the sidewall of the processing tank has a channel connecting the first connection port and the second connection port; the driving mechanism includes:

[0019] A sliding part is connected to the bottom of the baffle and slides in cooperation with the slide rail;

[0020] An elastic element, one end of which is connected to the bottom of the slide rail, and the other end of which is connected to the sliding part;

[0021] The connecting part is slidably disposed within the groove;

[0022] A connecting rope is located within the channel; one end of the connecting rope passes through the first connecting port and is connected to the connecting part; the other end of the connecting rope passes through the second connecting port and is connected to the sliding part; and

[0023] A connecting structure is provided on the scraper; the connecting structure has a connecting end that can be connected to or separated from the connecting part;

[0024] The connecting end of the connecting structure is used to connect with the connecting part at a lower position. When the connecting part slides to a higher position along with the connecting structure, the connecting end of the connecting structure separates from the connecting part.

[0025] In one possible implementation, the connecting part has a socket, and the connecting end of the connecting structure is used to engage with the socket; the connecting structure is an electric push rod or a cylinder.

[0026] In one possible implementation, the liquid storage cavity is provided with a snap-fit ​​positioning structure, which is used to snap-fit ​​with the bottom of the baffle so that the baffle is in a second state.

[0027] When the scraper slides from the high end of the screen to the low end of the screen, the snap-fit ​​positioning structure separates from the baffle, and the baffle returns to its original position under the elastic force of the elastic element.

[0028] In one possible implementation, the sidewall of the baffle has a groove near the bottom, and the snap-fit ​​positioning structure includes:

[0029] A positioning part is disposed inside the liquid storage cavity; the positioning part has a slot that engages with the sliding part.

[0030] An elastic protrusion is fixed to the top of the positioning portion in the slot; the elastic protrusion is used to engage with the groove; and

[0031] A driving component is disposed on the processing box; the driving component has a driving end connected to the positioning part, and under the driving of the driving end, the positioning part has a first position that engages with the baffle and a second position that is separated from the baffle; the height of the second position is lower than the height of the first position.

[0032] In one possible implementation, the slide sidewall has a stop near the bottom, and the stop contacts the slide when the baffle engages with the positioning part.

[0033] In one possible implementation, the processing box is hinged to an opening and closing door at the discharge port. Under the pushing action of the scraper, the opening and closing door can be opened to discharge the sediment from the discharge port.

[0034] In one possible implementation, the processing box is connected to a guide plate below the discharge port, and the guide plate is arranged at an angle downward.

[0035] This invention provides a cobalt-containing wastewater treatment device. Compared with existing technologies, during the slag discharge process, the precipitate and wastewater enter the feeding chamber of the treatment tank together from the inlet and fall onto the screen. The precipitate is blocked by the screen and remains on it. The wastewater can pass through the screen and flow into the lower storage chamber. The wastewater in the storage chamber can be transferred to the concentration device through the outlet. After feeding is completed, most of the wastewater will pass through the screen and flow into the lower storage chamber. At this time, the scraper moves from the lower end to the upper end of the screen. During the movement, the scraper carries the precipitate upwards, and the scraper can press the precipitate in the scraping area, further separating the wastewater from the precipitate. When the scraper carries the precipitate to the upper end of the screen, the dehydrated precipitate is discharged from the outlet of the treatment tank. Through the above-mentioned configuration, the precipitate and wastewater can be separated, thus facilitating the collection of the precipitate and the recycling of the separated wastewater. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of a cobalt-containing wastewater treatment device provided in an embodiment of the present invention;

[0037] Figure 2 A cross-sectional view of a cobalt-containing wastewater treatment device provided in an embodiment of the present invention;

[0038] Figure 3 A schematic diagram of the baffle portion of a cobalt-containing wastewater treatment device provided in an embodiment of the present invention;

[0039] Figure 4 for Figure 3 A magnified schematic diagram of part A in the middle;

[0040] Figure 5 A cross-sectional schematic diagram of the treatment tank portion of a cobalt-containing wastewater treatment device provided in an embodiment of the present invention;

[0041] Figure 6 for Figure 5 Enlarged diagram of section B in the middle;

[0042] Figure 7 for Figure 5 Enlarged diagram of section C;

[0043] Figure 8 This is a schematic diagram of the positioning part of a cobalt-containing wastewater treatment device provided in an embodiment of the present invention;

[0044] Figure 9This is a schematic diagram of the connection structure of a cobalt-containing wastewater treatment device provided in an embodiment of the present invention;

[0045] Figure 10 for Figure 9 Enlarged schematic diagram of section D in the middle.

[0046] Explanation of reference numerals in the attached drawings: 1. Processing box; 11. Feeding chamber; 12. Liquid storage chamber; 13. Discharge port; 14. Slide rail; 15. Slide groove; 151. Guide groove; 16. Channel; 17. Stop part; 2. Screen; 21. Clearance groove; 3. Scraper; 31. Scraping area; 32. Connecting plate; 4. Baffle; 41. Groove; 5. Drive mechanism; 51. Sliding part; 52. Elastic element; 53. Connecting part; 531. Insertion hole; 532. Guide block; 54. Connecting rope; 55. Connecting structure; 6. Snap-fit ​​positioning structure; 61. Positioning part; 611. Slot; 62. Elastic protrusion; 63. Drive component; 7. Opening and closing door; 8. Guide plate. Detailed Implementation

[0047] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0048] Please also refer to Figures 1 to 10The present invention provides a cobalt-containing wastewater treatment device. The cobalt-containing wastewater treatment device includes a treatment tank 1 and a screen 2. The treatment tank 1 has an inlet (not shown in the figure) at the top and an outlet (not shown in the figure) at the bottom. The inlet is connected to the slag outlet of a filter device, and the outlet is connected to a concentration device via a pipe. A water pump is installed on the pipe connected to the outlet to pump the wastewater into the concentration device. The screen 2 is installed inside the treatment tank 1. The screen 2 divides the treatment tank 1 into an inlet chamber 11 and a storage chamber 12, with the inlet and outlet located on the inlet chamber 11 and the storage chamber 12, respectively. The screen 2 is used to block... The system separates sediment and wastewater. A screen 2 is inclined, and a discharge port 13 is located at the high end of the screen 2. A scraper 3 is installed in the feed chamber 11, with its bottom end contacting the upper surface of the screen 2 and its lower surface forming an acute angle with the upper surface of the screen 2, creating a scraping area 31. The scraper 3 has the freedom to slide from the low end to the high end of the screen 2. As the scraper 3 slides from the low end to the high end of the screen 2, it presses down on the sediment in the scraping area 31, squeezing out the wastewater. It should be noted that the screen 2 itself has mesh openings, the diameter of which is smaller than the diameter of the sediment, allowing wastewater to pass through. Because the mesh openings on the screen 2 are relatively dense, they can easily result in many black lines on the drawings, reducing visibility. To improve the visibility of the drawings, the mesh openings are not shown in the accompanying drawings of this application.

[0049] This invention provides a cobalt-containing wastewater treatment device. Compared with existing technologies, during the slag discharge process, the precipitate and wastewater enter the feed chamber 11 of the treatment tank 1 together from the feed inlet and fall onto the screen 2. The precipitate is blocked by the screen 2 and remains on it. The wastewater can pass through the screen 2 and flow into the lower storage chamber 12. The wastewater in the storage chamber 12 can be transferred to the concentration device through the outlet. After feeding is completed, most of the wastewater will pass through the screen 2 and flow into the lower storage chamber 12. At this time, the scraper 3 moves from the lower end to the upper end of the screen 2. During the movement, the scraper 3 drives the precipitate upward, and the scraper 3 can press the precipitate in the scraping area 31, further separating the wastewater from the precipitate. When the scraper 3 drives the precipitate to the upper end of the screen 2, the dehydrated precipitate is discharged from the discharge port 13 of the treatment tank 1. The above-described configuration allows for the separation of sediment and wastewater, facilitating sediment collection and enabling the recycling of the separated wastewater. The feed inlet faces the screen 2 near its upper end, while the scraper 3 is positioned at the lower end of the screen 2 during feeding. After the sediment and wastewater fall onto the screen 2, the sediment slides towards the lower end of the screen 2, allowing the wastewater to pass through the screen 2 and flow into the lower storage chamber 12.

[0050] It should be noted that a connecting plate 32 is fixedly provided on the top of the scraper 3. During the process of the scraper 3 moving from the lower end to the upper end, the total volume of the scraped material will not exceed the top of the connecting plate 32, so the material will not exceed the top of the connecting plate 32. An electric push rod is provided on the side wall of the processing box 1 corresponding to the lower end of the screen 2. The base of the electric push rod is fixed on the outer side wall of the processing box 1, and the push tip of the electric push rod passes through the side wall of the processing box 1 and is fixedly connected to the scraper 3. The push tip of the electric push rod is sealed to the processing box 1. The axis of the push tip of the electric push rod is parallel to the screen 2, so the electric push rod can push the scraper 3 to slide on the screen 2.

[0051] In some embodiments, such as Figures 1 to 10 As shown, the screen 2 has a vertically penetrating clearance groove 21. The cobalt-containing wastewater treatment equipment also includes a baffle 4 and a drive mechanism 5. The baffle 4 is slidably disposed within the clearance groove 21. The upper surface of the baffle 4 has a first state protruding from the upper surface of the screen 2 and a second state coplanar with the upper surface of the screen 2. The drive mechanism 5 is disposed on the treatment box 1 and is used to drive the baffle 4 to slide. The area between the baffle 4, the scraper 3, and the upper surface of the screen 2 is a scraping area 31. When the scraper 3 slides upward, under the blocking action of the baffle 4, the scraper 3 can squeeze the sediment in the scraping area 31. When the scraper 3 slides upward a preset distance, the drive mechanism 5 drives the baffle 4 to slide to the second state, so that the scraper 3 and the sediment cross the clearance groove 21 at the baffle 4.

[0052] It should be noted that during the feeding process, the top of the baffle 4 protrudes from the upper surface of the screen 2, i.e., the baffle 4 is in the first state. Through this arrangement, the baffle 4 divides the screen 2 into upper and lower parts. When the amount of material in the upper part exceeds the top of the baffle 4, the material will flow to the lower part of the screen 2. During the feeding process, the baffle 4's blocking effect reduces the amount of material accumulating at the bottom of the screen 2. When the scraper 3 slides upwards, the baffle 4's blocking effect facilitates the scraper 3 pressing down on the material on the screen 2, separating wastewater from sediment and reducing the water content of the sediment. By providing a clearance groove 21 on the screen 2, the baffle 4 can slide within the clearance groove 21. When the top of the baffle 4 slides downwards to the upper surface of the screen 2, the scraper 3 and the scraped material will cross the baffle 4 and continue to slide upwards.

[0053] In some embodiments, such as Figures 1 to 10 As shown, there are several baffles 4, which are spaced apart along the lower end to the upper end of the screen 2.

[0054] It should be noted that because several baffles 4 are set on the screen 2, the screen 2 can be divided into several sections; during the upward sliding of the scraper 3, the sediment can be pressed in sections, thereby reducing the water content of the sediment.

[0055] In some embodiments, such as Figures 1 to 10 As shown, the side wall of the liquid storage chamber 12 has a slide rail 14, and the side wall of the feed chamber 11 has a slide groove 15 arranged parallel to the screen 2; the slide groove 15 has a first connection port near the lower end of the screen 2, and the slide rail 14 has a second connection port near its bottom; the side wall of the processing box 1 has a channel 16 connecting the first connection port and the second connection port; the processing box 1 has a drive mechanism 5 on both opposite sides, and each drive mechanism 5 includes a sliding part 51, an elastic element 52, a connecting part 53, a connecting rope 54, and a connecting structure 55; the sliding part 51 is connected to the bottom of the baffle 4 and slides in cooperation with the slide rail 14; one end of the elastic element 52 is connected to the bottom of the slide rail 14, and the other end is connected to the sliding part 51. The connecting part 53 is slidably disposed in the slide groove 15. The top of the slide groove 15 has a guide groove 151, and the top of the connecting part 53 has a guide block 532 that slides with the guide groove 151. The connecting rope 54 is located in the channel 16. One end of the connecting rope 54 passes through the first connecting port and is connected to the connecting part 53. The other end of the connecting rope 54 passes through the second connecting port and is connected to the sliding part 51. The connecting structure 55 is disposed on the scraper 3. The connecting structure 55 has a connecting end that is connected to or separated from the connecting part 53. The connecting end of the connecting structure 55 is used to connect to the connecting part 53 at a lower position. When the connecting part 53 slides to a higher position with the connecting structure 55, the connecting end of the connecting structure 55 is separated from the connecting part 53.

[0056] It should be noted that the elastic element 52 is a spring, with one end fixedly connected to the bottom of the slide rail 14 and the other end fixedly connected to the sliding part 51. After the material is fed, the scraper 3 slides upward under the drive of the electric push rod. During the upward sliding process of the scraper 3, the scraper 3 scrapes the sediment at the lower end of the screen 2 to the upper end, and the sediment between the scraper 3 and the screen 2 will increase. Under the blocking action of the baffle 4, the pressing force of the scraper 3 on the sediment is increased, and the water content in the sediment is reduced. After the scraper 3 slides upward to the preset distance, the connecting structure 55 is aligned with the connecting part 53 at the lower end, and the connecting structure 55 is connected to the connecting part 53. During the upward sliding process of the scraper 3, the connecting structure 55 drives the connecting part 53 to slide upward. At this time, the connecting part 53 provides tension to the connecting rope 54, the connecting rope 54 provides tension to the baffle 4, and finally pulls the baffle 4 downward to the second state. At this time, the connecting structure 55 and the connecting part 53 are separated.

[0057] In some embodiments, such as Figures 1 to 10 As shown, the connecting part 53 has a socket 531, and the connecting end of the connecting structure 55 is used to be inserted into the socket 531; the connecting structure 55 is an electric push rod or a cylinder.

[0058] For example, this embodiment uses an electric actuator as an example. When the push tip of the electric actuator is aligned with the connecting part 53 at the lower end, the push tip of the electric actuator extends and engages with the connecting part 53. At this time, the electric actuator can drive the connecting part 53 to slide upward together, thus enabling the connecting rope 54 to pull the baffle 4 downward, and finally causing the baffle 4 to slide to the second state. When the baffle 4 is in the second state, the push tip of the electric actuator separates from the connecting part 53.

[0059] In some embodiments, such as Figures 1 to 10 As shown, the liquid storage cavity 12 is provided with a snap-fit ​​positioning structure 6, which is used to snap-fit ​​with the bottom of the baffle 4 so that the baffle 4 is in the second state; wherein, when the scraper 3 slides from the high end of the screen 2 to the low end of the screen 2, the snap-fit ​​positioning structure 6 separates from the baffle 4, and the baffle 4 is reset upward under the elastic force of the elastic member 52.

[0060] It should be noted that by providing a snap-fit ​​positioning structure 6 within the liquid storage chamber 12, when the baffle 4 slides downward to the second state, the baffle 4 engages with the snap-fit ​​positioning structure 6, thus facilitating the scraper 3 to return from the high end of the screen 2 to the low end. When the scraper 3 slides to the low end of the screen, the snap-fit ​​positioning structure 6 slides downward and separates from the baffle 4. At this time, the baffle 4 returns to its original position under the elastic force of the elastic element 52, thus returning the baffle 4 to the first state.

[0061] In some embodiments, such as Figures 1 to 10 As shown, the side wall of the baffle 4 has a groove 41 near the bottom. The snap-fit ​​positioning structure 6 includes a positioning part 61, an elastic protrusion 62, and a driving component 63. The positioning part 61 is disposed in the liquid storage chamber 12. The positioning part 61 has a slot 611 that engages with the sliding part 51. The elastic protrusion 62 is fixed at the top of the positioning part 61 in the slot 611. The elastic protrusion 62 is used to engage with the groove 41. The driving component 63 is disposed on the processing box 1. The driving component 63 has a driving end connected to the positioning part 61. Under the drive of the driving end, the positioning part 61 has a first position that engages with the baffle 4 and a second position that is separated from the baffle 4. The height of the second position is lower than the height of the first position.

[0062] It should be noted that both sides of the baffle 4 are provided with grooves 41, and each slot 611 has two elastic protrusions 62, which respectively engage with the corresponding grooves 41. The driving component 63 includes a cylinder, which is fixed to the outside of the processing box 1; the piston rod of the cylinder passes through the processing box 1 and is connected to the positioning part 61; the piston rod of the cylinder is sealed to the processing box 1. Under the drive of the cylinder, the positioning part 61 can slide downward and separate from the baffle 4. At this time, the baffle 4 is reset upward under the elastic force of the elastic element 52.

[0063] In some embodiments, such as Figures 1 to 10 As shown, the side wall of the slide 14 has a stop 17 near the bottom. When the baffle 4 and the positioning part 61 are engaged, the stop 17 contacts the sliding part 51.

[0064] It should be noted that by providing a stop 17 on the slide rail 14, and when the baffle 4 and the positioning part 61 are engaged, the baffle 4 contacts the stop 17; when the positioning part 61 slides downward, the baffle 4 can be prevented from sliding along with the positioning part 61, thus facilitating the separation of the positioning part 61 and the baffle 4; then the baffle 4 is reset upward under the elastic force of the elastic member 52.

[0065] In some embodiments, such as Figures 1 to 10 As shown, the treatment box 1 is hinged to an opening and closing door 7 at the discharge port. Under the pushing action of the scraper 3, the opening and closing door 7 can be opened, thereby discharging the sediment from the discharge port. A guide plate 8 is connected below the discharge port of the treatment box 1, and the guide plate 8 is set at an angle downward.

[0066] It should be noted that a preset thrust is required to open the opening / closing door 7 during the process of material and scraper 3 pushing it open; before the preset thrust is reached, the wastewater in the sediment will be squeezed out and flow through the screen 2 into the storage chamber 12 below. After the opening / closing door 7 is pushed open, the sediment is discharged from the slag outlet and slides down the guide plate 8; a collection box (not shown in the figure) can be set at the lower end of the guide plate 8 to collect the discharged sediment.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cobalt-containing wastewater treatment device, characterized in that, include: The processing tank has a feed inlet at the top and a liquid outlet at the bottom; the feed inlet is used to connect with the slag outlet of the filtration device and the liquid outlet is used to connect with the concentration device. as well as A screen is installed inside the processing tank; the screen divides the processing tank into a feed chamber and a storage chamber, with the feed inlet and the outlet located on the feed chamber and the storage chamber, respectively; the screen is used to block sediment and to allow wastewater to pass through, so as to separate sediment and wastewater. The screen is inclined, and the processing box has a discharge port at the high end of the screen. A scraper is provided in the feeding chamber. The bottom end of the scraper contacts the upper surface of the screen, and the lower surface of the scraper forms an acute angle with the upper surface of the screen, forming a scraping area. The scraper has the freedom to slide from the low end of the screen to the high end of the screen. As the scraper slides from the lower end of the screen to the upper end of the screen, the scraper can press down the sediment in the scraping area to remove the wastewater from the sediment. The screen has vertically continuous clearance grooves, and the cobalt-containing wastewater treatment equipment also includes: A baffle is slidably disposed within the clearance groove; the upper surface of the baffle has a first state protruding from the upper surface of the screen and a second state coplanar with the upper surface of the screen. A drive mechanism is provided on the processing box, and the drive mechanism is used to drive the baffle to slide. The area between the baffle, the scraper, and the upper surface of the screen is a scraping area; when the scraper slides upward, it can squeeze the sediment in the scraping area under the blocking effect of the baffle. When the scraper slides upward a preset distance, the driving mechanism drives the baffle to slide to the second state, so that the scraper and the sediment cross the clearance groove at the baffle. The liquid storage chamber has a slide rail on its side wall, and the feed chamber has a slide groove parallel to the screen on its side wall; the slide groove has a first connection port near the bottom of the screen, and the slide rail has a second connection port near its bottom; the processing tank has a channel inside its side wall connecting the first connection port and the second connection port; the driving mechanism includes: A sliding part is connected to the bottom of the baffle and slides in cooperation with the slide rail; An elastic element, one end of which is connected to the bottom of the slide rail, and the other end of which is connected to the sliding part; The connecting part is slidably disposed within the groove; A connecting rope is located within the channel; one end of the connecting rope passes through the first connecting port and is connected to the connecting part; the other end of the connecting rope passes through the second connecting port and is connected to the sliding part; and A connecting structure is provided on the scraper; the connecting structure has a connecting end that can be connected to or separated from the connecting part; The connecting end of the connecting structure is used to connect with the connecting part at a lower position. When the connecting part slides to a higher position along with the connecting structure, the connecting end of the connecting structure separates from the connecting part. The liquid storage chamber is provided with a snap-fit ​​positioning structure, which is used to snap-fit ​​with the bottom of the baffle so that the baffle is in the second state; When the scraper slides from the high end of the screen to the low end of the screen, the snap-fit ​​positioning structure separates from the baffle, and the baffle returns to its original position upward under the elastic force of the elastic element. The sidewall of the baffle has a groove near the bottom, and the snap-fit ​​positioning structure includes: A positioning part is disposed inside the liquid storage cavity; the positioning part has a slot that engages with the sliding part. An elastic protrusion is fixed to the top of the positioning portion in the slot; the elastic protrusion is used to engage with the groove; and A driving component is disposed on the processing box; the driving component has a driving end connected to the positioning part, and under the driving of the driving end, the positioning part has a first position that engages with the baffle and a second position that is separated from the baffle; the height of the second position is lower than the height of the first position.

2. The cobalt-containing wastewater treatment equipment as described in claim 1, characterized in that, There are several baffles, and the baffles are spaced apart along the lower end to the upper end of the screen.

3. The cobalt-containing wastewater treatment equipment as described in claim 1, characterized in that, The connecting part has a socket, and the connecting end of the connecting structure is used to be inserted into the socket; the connecting structure is an electric push rod or a cylinder.

4. The cobalt-containing wastewater treatment equipment as described in claim 1, characterized in that, The slide sidewall has a stop near the bottom, and when the baffle and the positioning part are engaged, the stop comes into contact with the sliding part.

5. The cobalt-containing wastewater treatment equipment as described in claim 1, characterized in that, The processing box is hinged to an opening and closing door at the discharge port. Under the pushing action of the scraper, the opening and closing door can be opened to discharge the sediment from the discharge port.

6. The cobalt-containing wastewater treatment equipment as described in claim 5, characterized in that, The processing box is connected to a guide plate below the discharge port, and the guide plate is set at an angle downward.

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