A water treatment system for uranium mining and smelting

Abstract

This invention discloses a water treatment system for uranium mining and smelting, comprising a wastewater collection tank, a sedimentation tank, a filtration tank, an ion exchange tank, a pH adjustment tank, and a sludge collection tank. The wastewater collection tank and sedimentation tank are connected to the sludge collection tank. The sedimentation tank is equipped with a scraper driven by a scraper motor. The scraper motor moves one stroke, causing the scraper to slide from one end of the sludge collection trough to the other end and then back to its original position. This ensures that the scraper does not bring back the sludge that has just fallen to the bottom of the sludge collection trough when it returns after scraping. This system can treat wastewater generated during uranium mining and smelting processes and enrich, extract, and recover uranium from the wastewater.

Description

Technical Field

[0001] This invention relates to the field of uranium mine wastewater treatment technology, specifically a water treatment system for uranium mining and smelting. Background Technology

[0002] During the mining and smelting of uranium ore, a large amount of wastewater is generated. This wastewater contains not only the radioactive element uranium, but also certain amounts of metals such as iron, manganese, zinc, and copper. Even if the concentration of the above-mentioned harmful metals in the wastewater is low, the wastewater must be treated before it can be discharged. Therefore, this invention provides a water treatment system for uranium mining and smelting. Summary of the Invention

[0003] The purpose of this invention is to provide a water treatment system for uranium mining and smelting to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a water treatment system for uranium mining and smelting, comprising a wastewater collection tank, a sedimentation tank, a filtration tank, an ion exchange tank, and a pH adjustment tank. The wastewater collection tank is provided with an inlet, and a first booster pump is installed on the side wall of the wastewater collection tank. The first booster pump is connected to the wastewater collection tank and the sedimentation tank through a first suction pipe and a first discharge pipe, respectively. An installation plate is fixedly connected to the sedimentation tank, and a feed pipe for adding reactants and a stirring paddle are respectively connected to the installation plate. A second booster pump is installed on the sedimentation tank, and the second booster pump is connected to the sedimentation tank and the filtration tank through a second suction pipe and a second discharge pipe, respectively. A filter element is installed inside the filtration tank, and the filtration tank is connected to the ion exchange tank through a third booster pump. The ion exchange tank is connected to the pH adjustment tank through a fourth booster pump, and the pH adjustment tank is provided with an outlet.

[0005] Preferably, the lower inner surface of the wastewater collection tank is inclined, and the lowest point of its lower inner surface is connected to the first suction pipe. The first suction pipe is connected to the sludge collection tank through the first sludge pump. An inclined platform is fixedly connected inside the sedimentation tank. A sludge collection trough is opened at the lowest point of the inclined platform. A sludge scraper is provided inside the sludge collection trough, and the sludge scraper is driven by a scraper motor. One end of the sludge collection trough is connected to the second suction pipe, and the second suction pipe is connected to the sludge collection tank through the second sludge pump.

[0006] Preferably, a fixing rod is symmetrically fixedly connected to the upper end of the scraper blade. The upper end of the fixing rod extends into the inner sleeve and is fixedly connected to the inner side wall of the outer sleeve through a second spring. A connecting plate is fixedly connected between the two outer sleeves. The connecting plate is meshed with a screw rotatably connected inside the sedimentation tank. The screw is connected to the motor shaft of the scraper motor through a chain. A limiting rod is fixedly connected to one side wall of the scraper blade. The limiting rod extends into the limiting groove opened on the inner side wall of the sedimentation tank.

[0007] Preferably, the scraper includes a main frame, an inclined plate is slidably connected inside the main frame, and a first spring is connected between the inclined plate and the inner sidewall of the main frame.

[0008] Preferably, both the first and second pumping pipes are fixedly connected to filter heads, and a float plate is fixedly sleeved on the outside of the filter head. The filter head includes a fixed sleeve, and a filter sleeve is slidably connected inside the fixed sleeve. A connecting frame is fixedly connected inside the filter sleeve. One side of the connecting frame is connected to the fixed frame inside the fixed sleeve by a third spring, and the other side is connected to a blocking plate on the outer end face of the filter sleeve by a fourth spring. A top rod is fixedly connected to the fixed frame, and the top rod passes through the connecting frame and extends to its outside.

[0009] Preferably, a backwash inlet pipe is connected to the lower end face of the filter tank, the backwash pipe is connected to an external flushing liquid tank, and the upper end face of the filter tank is connected to a sedimentation tank through a backwash outlet pipe.

[0010] Preferably, the ion exchange cell is internally fixedly connected to a partition, which divides the interior of the ion exchange cell into an adsorption cell and a rinsing cell. A support rod is rotatably connected to the partition, and a fixing plate is fixedly connected to the upper end of the support rod. Both ends of the fixing plate are provided with mounting brackets, and ion exchange columns are installed on the mounting brackets. The rinsing cell is connected to the wastewater collection cell through a fifth lift pump, and a rinsing pipe is provided on one side of the rinsing cell.

[0011] Preferably, the lower end of the support rod is connected to the motor shaft of the switching motor via a connecting rod. A lifting motor is mounted on the fixed plate, and a winding shaft is fixedly connected to the motor shaft of the lifting motor. A connecting rope is wound on the winding shaft, and the connecting rope passes through the fixed plate and is connected to the mounting frame.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention treats wastewater through sedimentation tank, filtration tank, ion exchange tank and pH adjustment tank, removes heavy metals from the wastewater and extracts enriched uranium from the wastewater, thereby effectively treating the wastewater generated during uranium mining and hydrometallurgical processes, ensuring that it will not pollute the environment after discharge. This device can treat the wastewater generated during uranium mining and hydrometallurgical processes through a series of treatment steps, ensuring that it will not pollute the environment after discharge. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 This is a schematic diagram of the structure of the filter pool of the present invention;

[0015] Figure 3 This is a cross-sectional view of the fixing sleeve of the present invention;

[0016] Figure 4 This is a schematic diagram of the internal structure of the sedimentation tank of the present invention;

[0017] Figure 5 This is a cross-sectional view of the outer casing of the present invention;

[0018] Figure 6 This is a cross-sectional view of the filter tank of the present invention;

[0019] Figure 7 This is a schematic diagram of the mounting bracket of the present invention;

[0020] Figure 8 This is a schematic diagram of the movement of the limiting rod within the limiting groove of the present invention;

[0021] Figure 9 This is a flowchart of the present invention.

[0022] In the diagram: 1. Wastewater collection tank; 2. Sedimentation tank; 3. Filtration tank; 4. pH adjustment tank; 5. Ion exchange tank; 501. Baffle plate; 502. Support rod; 503. Fixing plate; 504. Lifting motor; 505. Winding shaft; 506. Connecting rope; 507. Mounting frame; 5071. Upper plate; 5072. Lower plate; 5073. Support column; 508. Adsorption tank; 509. Washing tank; 510. Ion exchange column; 511. Changing motor; 6. Inlet / outlet; 7. First lift pump; 8. First pumping pipe; 9. First drain pipe; 10. Mounting plate; 11. Feeding pipe; 12. Agitator; 13. Second lift pump; 14. Second pumping pipe; 15. Second drain pipe; 16. Filter element; 17. Third lift pump; 18. Fourth lift pump; 19. First... 20. First sludge pump, 21. Sludge collection tank, 22. Inclined platform, 23. Sludge collection trough, 24. Scraper, 241. Main frame, 242. Inclined plate, 243. First spring, 25. Scraper motor, 26. Second sludge pump, 27. Second sludge pump, 28. Fixing rod, 29. Outer sleeve, 30. Second spring, 31. Connecting plate, 32. Limiting rod, 33. Screw, 34. Limiting groove, 35. Filter head, 351. Fixing sleeve, 352. Filter sleeve, 353. Connecting frame, 354. Third spring, 355. Fixing frame, 356. Fourth spring, 357. Blocking plate, 358. Top rod, 36. Float plate, 37. Backwash inlet pipe, 38. Backwash outlet pipe, 39. Fifth lift pump, 40. Flushing pipe, 41. Agitator motor. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figure 1-9This invention provides a technical solution: a water treatment system for uranium mining and smelting, comprising a wastewater collection tank 1, a sedimentation tank 2, a filtration tank 3, an ion exchange tank 5, and a pH adjustment tank 4. The wastewater collection tank 1 is equipped with an inlet 6, through which external wastewater can be discharged into the wastewater collection tank 1, allowing the wastewater to be temporarily stored inside the wastewater collection tank 1. Simultaneously, the wastewater undergoes preliminary sedimentation inside the wastewater collection tank 1, causing solid impurities such as sludge to settle. A first lift pump 7 is installed on the side wall of the wastewater collection tank 1. The first lift pump 7 is connected to the wastewater collection tank 1 and the sedimentation tank 2 via a first suction pipe 8 and a first drainage pipe 9, respectively. The first lift pump 7 can use the first suction pipe 8 to pump water from the wastewater collection tank 1... Uranium-containing wastewater is extracted and discharged into the sedimentation tank 2 through the first drain pipe 9. A mounting plate 10 is fixedly connected to the sedimentation tank 2. A feed pipe 11 for adding reactants and a stirring paddle 12 are connected to the mounting plate 10. Reactants (e.g., dissolved lime slurry) can be added to the sedimentation tank 2 through the feed pipe 11, allowing the wastewater to react with the reactants inside the sedimentation tank 2. This removes most of the heavy metals from the wastewater and maintains the pH value of the sedimentation tank 2 at 10. The stirring paddle 12 further facilitates the reaction between the wastewater and the reactants. The upper end of the stirring shaft of the stirring paddle 12 passes through the mounting plate 10 and the motor shaft of the stirring motor 41 mounted on the mounting plate 10. The mixing motor 41 is interconnected, and its motor shaft rotation drives the mixing paddle 12 to rotate. A second lift pump 13 is installed on the sedimentation tank 2. The second lift pump 13 is connected to the sedimentation tank 2 and the filter tank 3 via a second suction pipe 14 and a second drainage pipe 15, respectively. The second lift pump 13 can pump wastewater from the sedimentation tank 2 through the second suction pipe 14 and discharge the pumped water into the filter tank 3 through the second drainage pipe 15. A filter element 16 is installed inside the filter tank 3. The second drainage pipe 15 is connected to the filter tank 3 above the filter element 16. The filter element 16 can be made of quartz sand, walnut shells, or activated carbon, etc. The filter element 16 can filter and adsorb solid impurities in the wastewater. Support plates are fixedly connected to the four corner side walls of the filter tank 3. The four corners of filter element 16 are supported by four support plates, which are connected to each other by bolts. Filter tank 3 is connected to ion exchange tank 5 via a third lift pump 17, which is installed on the side wall of filter tank 3 and communicates with the lower end face of filter tank 3. Wastewater filtered by filter element 16 is pumped into ion exchange tank 5 by the third lift pump 17. The uranium enriched in the wastewater entering ion exchange tank 5 is extracted by the ion exchange resin inside ion exchange tank 5. Ion exchange tank 5 is connected to pH adjustment tank 4 via a fourth lift pump 18, which is installed on the side wall of pH adjustment tank 4. The adsorption tail liquid from which uranium enrichment has been extracted precipitates inside ion exchange tank 5.The precipitated waste can be collected and temporarily stored after each batch of wastewater has been treated using this device, and can be used for subsequent treatment. Simultaneously, the fourth lift pump 18 will pump the precipitated adsorption tail liquid into the pH adjustment tank 4. The pH adjustment tank 4 is equipped with a discharge outlet, allowing the pH value of the precipitated adsorption tail liquid to be adjusted inside the tank. Once the pH meets the discharge standard, it can be discharged through the discharge outlet, which is equipped with an openable and closable valve.

[0025] To better handle the sludge inside wastewater collection tank 1 and sedimentation tank 2, a sludge collection tank 21 is provided. Specifically, the lower inner surface of the wastewater collection tank 1 is sloped, and its lowest point is connected to the first suction pipe 19. The slope allows the sludge settled inside the wastewater collection tank 1 to slide down to the lowest point of the lower inner surface of the wastewater collection tank 1, above the first suction pipe 19, enabling the first suction pipe 19 to better extract the sludge from inside the wastewater collection tank 1. The first suction pipe 19 is connected to the first sludge pump 20. Connected to the sludge collection tank 21, the first sludge pump 20 can pump the sludge from the wastewater collection tank 1 into the sludge collection tank 21, thereby preventing the sludge from polluting the external environment. An inclined platform 22 is fixedly connected inside the sedimentation tank 2, and a sludge collection trough 23 is formed at the lowest point of the inclined platform 22. The inclined platform 22 allows the sludge settled inside the sedimentation tank 2 to slide into the sludge collection trough 23 for easy processing. Because wastewater reacts with reactants inside the sedimentation tank 2 to produce a large amount of precipitate, the inclined platform 22 is designed to facilitate this process. Platform 22, with an inclination angle greater than that of the lower inner side of wastewater collection tank 1, facilitates the collection of sediment and sludge from sedimentation tank 2. The sludge collection trough 23 is equipped with a scraper 24 driven by a scraper motor 25. The scraper motor 25 allows the scraper 24 to slide within the sludge collection trough 23, scraping the sludge and sediment dispersed within it to one end. The scraper motor 25 is mounted on the side wall of sedimentation tank 2. One end of 23 is connected to the second suction pipe 26. The second suction pipe 26 is connected to the sludge collection tank 21 through the second sludge pump 27. The sludge and sediment scraped to one end of the sludge collection tank 23 will be pumped into the sludge collection tank 21 by the second sludge pump 27 through the second suction pipe 26. The sludge scraper motor 25 can be set to move one stroke at a time. The sludge scraper motor 25 can move one stroke to make the scraper blade 24 slide from one end of the sludge collection tank 23 to the other end and then move back to the original position, which can facilitate the next sludge scraping operation.

[0026] To better drive the scraper blade 24, the scraper motor 25 can be configured as follows: Specifically, a fixing rod 28 is symmetrically and fixedly connected to the upper end of the scraper blade 24. The upper end of the fixing rod 28 extends into the outer sleeve 29 and is fixedly connected to the inner wall of the outer sleeve 29 via a second spring 30. There are two outer sleeves 29, and the upper ends of the two fixing rods 28 extend into the interior of the two outer sleeves 29 respectively. A connecting plate 31 is fixedly connected between the two outer sleeves 29. The connecting plate 31 is engaged with a screw 33 rotatably connected inside the sedimentation tank 2. The two ends of the screw 33 are rotatably connected between the two side walls inside the sedimentation tank 2. Rotation of the screw 33 causes the connecting plate 31 to move through the outer sleeves 29 and the fixing rod 28. The movable scraper 24 slides back and forth inside the sludge collection tank 23, and the screw 33 is connected to the motor shaft of the scraper motor 25 through a chain. Gear discs are fixedly connected to both the motor shaft of the scraper motor 25 and the screw 33. The chain 34 meshes with the two gear discs. The rotation of the motor shaft of the scraper motor 25 can drive the screw 33 to rotate through the chain 34. A limiting rod 32 is fixedly connected to one side wall of the scraper 24. The limiting rod 32 extends into the limiting groove 34 opened on the inner side wall of the sedimentation tank 2. The limiting groove 34 is parallelogram in shape. Under the action of the second spring 30, the height of the limiting rod 32 will be located in the middle of the inclined grooves at both ends of the limiting groove 34 when the scraper 24 is not affected by external forces.

[0027] When the scraper blade 24 moves toward the second suction pipe 26, the limiting rod 32 will be located in the horizontal groove below the limiting groove 34. At this time, the scraper blade 24 will be in contact with the bottom of the sludge collection tank 23. When the scraper blade 24 moves away from the second suction pipe 26, the limiting rod 32 will be located in the horizontal groove above the limiting groove 34. At this time, the scraper blade 24 will not be in contact with the bottom of the sludge collection tank 23. This will prevent the scraper blade 24 from bringing back the sludge that just fell to the bottom of the sludge collection tank 23 when it returns after scraping the sludge, thus allowing for better scraping work.

[0028] When the scraper motor 25 drives the scraper blade 24 in the above manner, one stroke of the scraper motor 25 is a specified number of clockwise rotations followed by the same number of counterclockwise rotations. For example, if the scraper motor 25 rotates 20 times, the scraper blade 24 can move from one end of the sludge collection tank 23 to the other end. In this case, one stroke of the scraper motor 25 is a 20-turn counterclockwise rotation followed by a 20-turn clockwise rotation.

[0029] To improve the sludge scraping effect of the scraper 24, the scraper 24 can be configured as follows: Specifically, the scraper 24 includes a main frame 241, a limiting rod 32 located on the main frame 241, and an inclined plate 242 slidably connected inside the main frame 241. A first spring 243 is connected between the inclined plate 242 and the inner wall of the main frame 241. When the limiting rod 32 is located in the horizontal groove below the limiting groove 34, the first spring 243 is in a compressed state, which allows the lower end face of the inclined plate 242 to make close contact with the bottom of the sludge collection tank 23, thus improving the sludge scraping effect. When the limiting rod 32 is located in the horizontal groove above the limiting groove 34, the first spring 243 is in a stretched state. At this time, the lower end face of the inclined plate 242 still does not contact the bottom of the sludge collection tank 23. The side of the inclined plate 242 near the second suction pipe 26 is inclined, which allows for better sludge scraping.

[0030] To better extract wastewater from wastewater collection tank 1 and sedimentation tank 2 and facilitate subsequent work, filter heads 35 are installed. Specifically, filter heads 35 are fixedly connected to the ends of both the first pumping pipe 8 and the second pumping pipe 14. Filter heads 35 can filter out larger impurities in the wastewater, facilitating subsequent wastewater treatment. A limiting frame is also installed inside the sedimentation tank 2. The filter head 35 located inside the sedimentation tank 2 passes through the limiting frame to enter the interior of the sedimentation tank 2. The lower end of the limiting frame is lower than the lower end of the stirring paddle 12, ensuring that the second pumping pipe 14 remains within the limiting frame and is not affected by the stirring paddle 12. Furthermore, the limiting frame is in the form of a fence, which does not affect the wastewater extraction by the filter head 35. A float plate 36 is fixedly sleeved on the outside of the filter head 35. The float plate 36 allows the filter head 35 to remain suspended in the wastewater at a certain height above the water surface, thus enabling smooth water pumping and preventing the impact of deposited sludge. The first pumping pipe 8 and the second pumping pipe 14 are both rubber hoses that can float on the water surface. Their length is sufficient to support the filter head 35 to contact the bottom of the wastewater collection tank 1 and the sedimentation tank 2. The filter head 35 includes a fixing sleeve 351, which is fixedly connected to and communicates with the first pumping pipe 8 or the second pumping pipe 14 respectively (the fixing sleeve 351 on the filter head 35 on the first pumping pipe 8 is fixedly connected to and communicates with the first pumping pipe 8, and the fixing sleeve 351 on the filter head 35 on the second pumping pipe 14 is fixedly connected to and communicates with the first pumping pipe 8). (Fixed and connected to the second water pipe 14), a filter sleeve 352 is slidably connected inside the fixed sleeve 351. Multiple filter holes are opened on the side of the filter sleeve 352, allowing wastewater to be drawn out through them, while impurities in the wastewater are filtered out. A connecting frame 353 is fixedly connected inside the filter sleeve 352. One side of the connecting frame 353 is connected to the fixed frame 355 inside the fixed sleeve 351 via a third spring 354. The third spring 354 pushes the filter sleeve 352 towards the outside of the fixed sleeve 351 through the connecting frame 353. The other side is connected to a blocking plate 357 on the outer end face of the filter sleeve 352 via a fourth spring 356. The end of the filter sleeve 352 furthest from the fixed frame 355 is the outer end. The outer end face of the filter sleeve 352 has a funnel-shaped groove that is wider on the outside and narrower on the inside. The blocking plate 357 is adapted to the funnel-shaped groove. The fourth spring 356 pulls the blocking plate 357 towards the filter sleeve 352, thereby blocking the funnel-shaped groove. A rod is fixedly connected to the blocking plate 357, which passes through the connecting frame 353, allowing the blocking plate 357 to move more stably. A push rod 358 is fixedly connected to the fixed frame 355, which passes through the connecting frame 353 and extends to its outside. When the filter holes on the filter sleeve 352 are covered by impurities in the external wastewater, the filter sleeve 352 will overcome the elastic force of the third spring 354 and move into the fixed sleeve 351 under the action of the corresponding first lift pump 7 or second lift pump 13.Simultaneously, the fixing sleeve 351 scrapes off the impurities covering the outer surface of the filter sleeve 352. Once the filter sleeve 352 has completely moved into the interior of the fixing sleeve 351, the push rod 358 pushes open the blocking plate 357. At this point, wastewater is drawn out through the funnel groove on the outer end face of the filter sleeve 352, and the filter sleeve 352 is no longer affected by the suction force of the first lift pump 7 or the second lift pump 13. Then, the third spring 354 pops the filter sleeve 352 out of the interior of the fixing sleeve 351. After the filter sleeve 352 is popped out, the blocking plate 357 and the push rod 358 will no longer contact each other. The fourth spring 356 then pulls the blocking plate 357 to block the funnel groove again.

[0031] To extend the service life of the filter element 16 and improve the filtration effect, a backwash pipe 37 is provided. Specifically, a backwash inlet pipe 37 is connected to the lower end face of the filter tank 3. The backwash pipe 37 is connected to the external flushing liquid pool. The upper end face of the filter tank 3 is connected to the sedimentation tank 2 through the backwash outlet pipe 38. The backwash inlet pipe 37 can pump the flushing liquid from the lower end face of the filter tank 3 into the interior of the filter tank 3, and through the filter element 16 to be discharged into the interior of the sedimentation tank 2 through the backwash outlet pipe 38 at the upper end of the filter tank 3. During the backwashing process, the impurities remaining on the filter element 16 can be flushed into the interior of the sedimentation tank 2, so that the filtration effect of the filter element 16 can always be maintained in a good state. During the backwashing process, the second lift pump 13 and the third lift pump 17 are in the closed state, so that the backwashing liquid will only be discharged into the interior of the sedimentation tank 2 through the backwash outlet pipe 38.

[0032] To facilitate the treatment of ion exchange resin that has been used to extract uranium, the ion exchange cell 5 can be configured as follows: Specifically, a partition 501 is fixedly connected inside the ion exchange cell 5, dividing the interior of the ion exchange cell 5 into an adsorption cell 508 and a rinsing cell 509. The ion exchange resin can extract and enrich uranium inside the adsorption cell 508, and the ion exchange resin that has been used to extract uranium can be rinsed inside the rinsing cell 509. A support rod 502 is rotatably connected to the partition 501, and a fixing plate 503 is fixedly connected to the upper end of the support rod 502. Mounting brackets 507 are provided at both ends of the fixing plate 503, and ion exchange columns 510 (containing ion exchange resin, used to enrich and extract uranium from wastewater) are mounted on the mounting brackets 507. The mounting brackets 507 include an upper plate 5... The upper plate 5071 and the lower plate 5072 are connected to the four corners of the lower plate 5072 with support columns 5073. The upper plate 5071 is connected to the support columns 5073 by bolts. The ion exchange column 510 is installed between the upper plate 5071 and the lower plate 5072. The rinsing tank 509 is connected to the wastewater collection tank 1 through the fifth lift pump 39. A rinsing pipe 40 is provided on one side of the rinsing tank 509. The rinsing pipe 40 can spray external rinsing agent into the ion exchange column 510 of the rinsing tank 509 through the nozzle on it, so as to rinse the ion exchange column 510. The rinsing residue generated after rinsing needs to be manually precipitated by adding sodium salt in the rinsing tank 509. The precipitated liquid, namely the precipitate mother liquor, is pumped back to the wastewater collection tank 1 through the fifth lift pump 39 for reprocessing. The sodium diuranate obtained by precipitation can be cleaned out, collected and temporarily stored.

[0033] The fifth booster pump 39 is equipped with a cation permeation membrane at its drain outlet, which can effectively remove nitrate ions from the precipitated mother liquor, thereby improving the treatment efficiency of the precipitated mother liquor.

[0034] To facilitate the handling of the ion exchange column 510, the support rod 502 can be driven in the following manner: Specifically, the lower end of the support rod 502 is connected to the motor shaft of the switching motor 511 via a connecting rod. After starting, the switching motor 511 will move one stroke, and one stroke of the switching motor 511 is a rotation of 180 degrees, which can interchange the positions of the two mounting brackets 507. The ion exchange column 510, after uranium enrichment extraction, is placed inside the rinsing tank 509 for rinsing. The rinsed ion exchange column 510 is then placed inside the adsorption tank 508 for uranium enrichment extraction. A lifting motor 504 is installed on the fixing plate 503, and a winding shaft 505 is fixedly connected to the motor shaft of the lifting motor 504. A connecting rope 506 is wound on the winding shaft 505. The connecting rope 506 passes through the fixing plate 503 and is connected to the mounting frame 507. The lifting motor 504 can drive the winding shaft 505 to rotate clockwise or counterclockwise, thereby controlling the winding shaft 505 to wind and unwind the connecting rope 506, and thus controlling the winding and unwinding of the mounting frame 507. When it is necessary to switch the positions of the two mounting frames 507, the lifting motor 504 can be started first to drive the winding shaft 505 to rotate clockwise and lift the mounting frame 507. Then the switching motor 511 can be started to switch the positions of the two mounting frames 507. Then the lifting motor 504 can be started again to drive the winding shaft 505 to rotate counterclockwise, thereby lowering the mounting frame 507.

[0035] The lower side of the fixing plate 503 is also fixedly connected to a limiting tube, and the mounting bracket 507 has a corresponding groove. After the mounting bracket 507 is lifted, the limiting tube will be inserted into the groove, so that the mounting bracket 507 can remain stable and not shake when the position is changed.

[0036] To better showcase the attached Figure 1 and attached Figure 4 The chains shown are for illustrative purposes only. Chain drive is an existing technology and is now widely used. For a specific example, please refer to the chains on bicycles.

[0037] Appendix Figure 8 The arrow in the diagram indicates the direction of movement of the limit rod 32.

[0038] The lifting motor 504, the replacement motor 511, the first lifting pump 7, the second lifting pump 13, the third lifting pump 17, the fourth lifting pump 18, the first sludge pump 20, the sludge scraper motor 25, the second sludge pump 27, the fifth lifting pump 39, and the stirring motor 41 are all connected to an external power source via cables.

[0039] Working principle: Uranium-containing wastewater will be discharged into the interior of wastewater collection tank 1 for collection and storage (when wastewater is collected in wastewater collection tank 1, the sludge inside the wastewater will also settle inside wastewater collection tank 1. At this time, the first sludge pump 20 can be started to pump the sludge deposited inside wastewater collection tank 1 into the interior of sludge collection tank 21). When the wastewater is collected to a certain amount, the first lift pump 7 is started to pump the wastewater into the interior of sedimentation tank 2.

[0040] After the wastewater enters the sedimentation tank 2, reactants can be added into the sedimentation tank 2 through the feed pipe 11, so that the wastewater and reactants react and settle inside the sedimentation tank 2. At the same time, the stirring paddle 12 can be started to allow the wastewater to react more fully with the reactants. After the wastewater and reactants have reacted for a period of time, the sludge scraper motor 25 can be started to drive the sludge scraper 24 to continuously scrape the sludge deposited inside the sedimentation tank 2 to one end of the sludge collection tank 23. At the same time, the second sludge pump 27 can be started to pump the sludge inside the sedimentation tank 2 into the sludge collection tank 21.

[0041] After the wastewater has reacted inside the sedimentation tank 2, the second lift pump 13 can be started to pump the wastewater inside the sedimentation tank 2 into the filter tank 3 for filtration. After filtration, the wastewater is pumped into the adsorption tank 508 through the third lift pump 17. Every once in a while, the backwash liquid can be pumped into the filter tank 3 through the backwash inlet pipe 37 for backwashing, thereby ensuring a good filtration effect.

[0042] After the wastewater enters the adsorption tank 508, the ion exchange column 510 inside the adsorption tank 508 will extract the enriched uranium from the wastewater. The adsorption tail liquid after the uranium enrichment is extracted can be pumped into the pH adjustment tank 4 by the fourth lift pump 18. The ion exchange column 510 after the uranium enrichment is extracted can be put into the flushing tank 509 by the lift motor 504 and the switching motor 511. The ion exchange column 510 inside the flushing tank 509 will be put into the adsorption tank 508. Then, the flushing liquid can be sprayed into the ion exchange column 510 inside the flushing tank 509 after the uranium enrichment is extracted and flushed. The liquid produced after flushing can be precipitated by adding sodium salt. The precipitated liquid, namely the mother liquor, can be pumped into the wastewater collection tank 1 by the fifth lift pump 39 for further treatment.

[0043] The pH value of the adsorption tail liquid containing extracted and enriched uranium entering the pH adjustment tank 4 is adjusted so that it can be discharged when it meets the discharge standards.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water treatment system for uranium mining and smelting, comprising a wastewater collection tank (1), a sedimentation tank (2), a filtration tank (3), an ion exchange tank (5), a pH adjustment tank (4), and a sludge collection tank (21), wherein the pH adjustment tank (4) is equipped with a discharge outlet, and the discharge outlet is provided with an openable and closable valve, characterized in that: The wastewater collection tank (1) and sedimentation tank (2) are both connected to the sludge collection tank (21). The wastewater collection tank (1) and sedimentation tank (2) are connected. An installation plate (10) is fixedly connected to the sedimentation tank (2). A feed pipe (11) for adding reactants and a stirring paddle (12) are respectively connected to the installation plate (10). The sedimentation tank (2) and filtration tank (3) are connected. A filter element (16) is installed inside the filtration tank (3). The four corner side walls of the filtration tank (3) are fixedly connected to... The filter element (16) is supported by four support plates at its four corners and connected to the support plates by bolts. The filter tank (3) is connected to the ion exchange tank (5), and the ion exchange tank (5) is connected to the pH adjustment tank (4). The sedimentation tank (2) is fixedly connected to an inclined platform (22). A sludge collection tank (23) is opened at the lowest point of the inclined platform (22). The sludge collection tank (23) is equipped with a scraper (24) inside, and the scraper (24) is driven by a scraper motor (25). The sludge collection tank (23) is connected at one end to the second suction pipe (26). The upper end of the scraper (24) is symmetrically fixedly connected to a fixing rod (28). The upper end of the fixing rod (28) extends into the outer sleeve (29) and is fixedly connected to the inner wall of the outer sleeve (29) through a second spring (30). A connecting plate (31) is fixedly connected between the two outer sleeves (29). The connecting plate (31) is meshed with a screw (33) rotatably connected inside the sedimentation tank (2). (33) The scraper blade (24) is connected to the motor shaft of the scraper motor (25) by a chain. A limiting rod (32) is fixedly connected to one side wall of the scraper blade (24). The limiting rod (32) extends into the inside of the limiting groove (34) on the inner side wall of the sedimentation tank (2). The limiting groove (34) is parallelogram in shape. Under the action of the second spring (30), the height of the limiting rod (32) of the scraper blade (24) will be located in the middle of the inclined grooves at both ends of the limiting groove (34) when the scraper blade (24) is not affected by external forces. When the scraper blade (24) moves towards the second suction pipe (26), the limiting rod (32) will be located in the horizontal groove below the limiting groove (34). At this time, the scraper blade (24) will be in contact with the bottom of the sludge collection tank (23). When the scraper blade (24) moves away from the second suction pipe (26), the limiting rod (32) will be located in the horizontal groove above the limiting groove (34). At this time, the scraper blade (24) will not be in contact with the bottom of the sludge collection tank (23). The scraper motor (25) moves one stroke to make The scraper (24) slides from one end of the sludge collection trough (23) to the other end and then moves back to its original position, so that the scraper (24) will not bring back the sludge that has just fallen to the bottom of the sludge collection trough (23) when it returns after scraping the sludge. The scraper (24) includes a main frame (241), and an inclined plate (242) is slidably connected inside the main frame (241). A first spring (243) is connected between the inclined plate (242) and the inner wall of the main frame (241). The first water pipe (8) and The ends of the second water pipe (14) are all fixedly connected to filter heads (35), and float plates (36) are fixedly sleeved on the outside of the filter heads (35). The filter heads (35) include a fixed sleeve (351), and a filter sleeve (352) is slidably connected inside the fixed sleeve (351). A connecting frame (353) is fixedly connected inside the filter sleeve (352). One side of the connecting frame (353) is connected to the fixed frame (355) inside the fixed sleeve (351) through a third spring (354). On the other side, a fourth spring (356) is connected to a blocking plate (357) on the outer end face of the filter sleeve (352). A top rod (358) is fixedly connected to the fixing frame (355). The top rod (358) passes through the connecting frame (353) and extends to its outside. A limiting frame is also installed inside the sedimentation tank (2). The filter head (35) located inside the sedimentation tank (2) will pass through the limiting frame and enter the interior of the sedimentation tank (2). The height of the lower end of the limiting frame is lower than the height of the lower end of the stirring paddle (12).

2. The water treatment system for uranium mining and smelting according to claim 1, characterized in that: The filter sleeve (352) has a funnel groove with a larger outer diameter and a smaller inner diameter on its outer end face. The blocking plate (357) is adapted to the funnel groove. The fourth spring (356) pulls the blocking plate (357) toward the filter sleeve (352) so that the blocking plate (357) blocks the funnel groove. A plug rod is fixedly connected to the blocking plate (357) and the plug rod passes through the connecting frame (353). When the filter holes on the filter sleeve (352) are covered by impurities in the wastewater, the filter sleeve (352) will overcome the elastic force of the third spring (354) and move into the fixed sleeve (351) under the action of the corresponding first lift pump (7) or second lift pump (13). At the same time, the fixed sleeve (351) will scrape off the impurities covering the outer side of the filter sleeve (352). After the filter sleeve (352) has completely moved into the interior of the fixed sleeve (351), the push rod (358) will block the plate (357). When the filter sleeve (352) is opened, the wastewater will be drawn out through the funnel groove on the outer end face of the filter sleeve (352). The filter sleeve (352) will not be affected by the suction force of the first lift pump (7) or the second lift pump (13). At this time, the third spring (354) will pop the filter sleeve (352) out of the inside of the fixed sleeve (351). After the filter sleeve (352) is popped out, the blocking plate (357) and the top rod (358) will not contact each other. The fourth spring (356) will pull the blocking plate (357) to block the funnel groove again.

3. The water treatment system for uranium mining and smelting according to claim 1, characterized in that: The ion exchange cell (5) is fixedly connected to a partition (501), which divides the interior of the ion exchange cell (5) into an adsorption cell (508) and a rinsing cell (509). A support rod (502) is rotatably connected to the partition (501). A fixing plate (503) is fixedly connected to the upper end of the support rod (502). Mounting brackets (507) are provided at both ends of the fixing plate (503). An ion exchange column (510) is installed on the mounting bracket (507). The mounting bracket (507) includes an upper plate (5071) and a lower plate (5072). Support columns (5073) are fixedly connected to the four corners of the lower plate (5072). The upper plate (5071) is connected to the support columns (5073) by bolts. The ion exchange column (510) is installed between the upper plate (5071) and the lower plate (5072).

4. A water treatment system for uranium mining and smelting according to claim 3, characterized in that: A lifting motor (504) is installed on the fixed plate (503). A winding shaft (505) is fixedly connected to the motor shaft of the lifting motor (504). A connecting rope (506) is wound on the winding shaft (505). The connecting rope (506) passes through the fixed plate (503) and is connected to the mounting frame (507). A limit tube is also fixedly connected to the lower side of the fixed plate (503). A corresponding groove is opened on the mounting frame (507). After the mounting frame (507) is lifted up, the limit tube will be inserted into the groove.

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