Fluidized bed defluorination reaction wastewater treatment equipment and method thereof

Abstract

The invention relates to the field of wastewater treatment, and discloses fluidized bed defluorination reaction wastewater treatment equipment and a method thereof.The fluidized bed defluorination reaction wastewater treatment equipment comprises a conveying part, a filtering part is arranged in the conveying part, and a cleaning part is arranged in the conveying part and located at the top end of the filtering part; one end of the cleaning part slides back and forth at the top of the filtering part and is used for cleaning materials on the inner surface and the outer surface of the filtering part, and when the cleaning part operates, the materials inside and outside the filtering part can be discharged; through cooperative operation of the cleaning component, the filtering component and the conveying component, efficient solid-liquid separation and automatic discharging can be carried out on the waste water obtained after the fluorine removal reaction of the fluidized bed, the self-cleaning function is achieved at the same time, the waste water recycling efficiency is improved, the waste water recycling efficiency is improved, and the waste water recycling efficiency is improved. And continuous filtration processing of the wastewater is ensured.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment, specifically to a fluidized bed defluorination reaction wastewater treatment device and method. Background Technology

[0002] In recent years, my country's fluorochemical industry has maintained rapid growth, and the demand for fluorine products has increased year by year. The application fields of fluorine products have shifted from traditional industries to new areas such as electronics, energy, environmental protection, information technology, and biomedicine. While driving economic growth, this has also generated a large amount of fluoride-containing wastewater. According to statistics on environmental pollutants, in 2022, the photovoltaic industry generated hundreds of millions of tons of fluoride-containing wastewater, accounting for approximately 5% of the total industrial wastewater discharge in China, and this figure is still growing rapidly, posing a serious challenge to water environmental safety. Fluoride-containing wastewater is characterized by high concentration, high toxicity, and poor biodegradability. If it directly enters the environment, it will seriously affect the activity of microorganisms and the mineral composition of soil and water bodies. Furthermore, excessive fluoride can cause dental fluorosis, back pain, rickets, and even paralysis, and can also cause other organ dysfunctions, seriously affecting human health. Therefore, the effective removal or recycling of fluoride-containing wastewater has become an urgent need for water environmental protection.

[0003] Fluidized bed crystallization (FBC) is an advanced and efficient technology for treating industrial fluoride-containing wastewater and recovering fluoride resources. This technology uses the reaction of fluoride ions with Ca(OH)2 to generate CaF2 crystals, thereby separating and recovering fluoride from aqueous solutions. However, in the operation of existing CaF2 crystal and aqueous solution separation devices, filter clogging is a common problem, which requires shutdown for cleaning or replacement of the filter screen. This results in the wastewater filtration process being unable to proceed continuously, reducing the filtration efficiency of CaF2 crystals and making it difficult to meet the continuous treatment requirements in actual production. Summary of the Invention

[0004] The purpose of this invention is to provide a fluidized bed defluorination reaction wastewater treatment device and method, which solves the following technical problems: how to efficiently separate solids and liquids in the wastewater after the fluidized bed defluorination reaction, and how to achieve a self-cleaning function.

[0005] The objective of this invention can be achieved through the following technical solution: a fluidized bed defluorination reaction wastewater treatment device, comprising a conveying component, a filtering component disposed inside the conveying component, and a cleaning component disposed inside the conveying component and at the top of the filtering component; One end of the cleaning component slides back and forth on the top of the filter component to clean the material on the inner and outer surfaces of the filter component. When the cleaning component is running, it can discharge the material inside and outside the filter component. The filter element is located inside the conveying component and is used to filter the wastewater and the materials that need to be recycled. It can also adjust the filtration position. The conveying component is used for conveying and discharging wastewater, and can collect the material scraped off by the cleaning component. It can also limit the movement of the cleaning component and the filtering component, and can seal the filter end of the filtering component.

[0006] As a preferred embodiment of the present invention: the cleaning component includes a connecting frame and a first drive motor. A threaded rod is threadedly connected to the middle of one end of the connecting frame. A scraper fan is symmetrically fixedly connected to one end of the connecting frame. An arc-shaped frame is fixedly connected to one end of the connecting frame and located at the outer edge of the scraper fan. A cleaning brush is evenly arranged on the inner surface of the arc-shaped frame. A wedge-shaped scraper is arranged on the outer periphery of the scraper fan. Flexible scrapers are fixedly connected to the bottom of both ends of the arc-shaped frame. A first transmission sprocket is fixedly installed at one end of the threaded rod and the first drive motor. A first transmission chain is meshed with the outer surface of the first transmission sprocket.

[0007] As a preferred embodiment of the present invention: the filter component includes a second drive motor and a transmission shaft. A second transmission sprocket is fixedly installed on the outer surface of one end of the second drive motor and the transmission shaft. A second transmission chain is meshed with the outer surface of the second transmission sprocket. A transmission gear is fixedly installed on the outer surface of one end of the transmission shaft. A spiral feeding shaft is fixedly connected to the other end of the transmission shaft. A filter barrel is meshed with the outer surface of the transmission gear. Toothed grooves are uniformly opened on the outer surface of one end of the filter barrel. Dividers are uniformly arranged on the inner surface of the filter barrel. Arc-shaped filter screens are uniformly fixedly installed on the outer surface of the filter barrel.

[0008] As a preferred embodiment of the present invention: the conveying component includes a support frame, a liquid collection chamber is provided at the top center of the support frame, a feed pipe is fixedly connected to the top of the support frame and at one end of the liquid collection chamber, a hopper is fixedly connected to the top of the support frame and at the other end of the liquid collection chamber, a fan-shaped sealing plate is provided at the bottom of one end of the hopper, a limiting annular groove is provided on the outer periphery of one end face of the hopper, a discharge hole is provided at the bottom of the other end of the hopper, a protective cover is provided on the top of the liquid collection chamber, and an arc-shaped cover plate is rotatably installed on the top of the protective cover; Limiting holes are evenly distributed in the middle of one end face of the protective cover, and discharge side holes are symmetrically distributed on both sides of the bottom of the other end face of the protective cover. A groove is distributed at one end of the liquid collection chamber and at one end edge of the feed pipe. A control cabinet is provided on the outside of one end of the support frame and on the side of the feed pipe. A stabilizing frame is welded to the top of the feed pipe. An outer material support platform is provided at the bottom of both sides of the inside of the fan-shaped sealing plate. A discharge pipe is fixedly connected to the bottom outer surface of the liquid collection chamber. A limiting shaft hole is provided at one end of the outer surface of the liquid collection chamber.

[0009] As a preferred embodiment of the present invention: one end of the connecting frame is slidably inserted into one end of the protective cover through a limiting hole, one end of the threaded rod is rotatably engaged with the protective cover through a limiting hole, and the scraper fan plate at one end of the connecting frame is inserted into the interior of the partitioned filter barrel.

[0010] As a preferred embodiment of the present invention: the wedge-shaped scraper on the periphery of the scraper fan plate contacts the surface of the arc-shaped filter screen and the partition plate; the arc-shaped frame contacts the outer surface of the arc-shaped filter screen through the cleaning brush on the inner surface; and the arc-shaped frame abuts against the outer material support platform on both sides inside the protective cover through the flexible scrapers at both ends.

[0011] As a preferred embodiment of the present invention: the drive shaft is inserted into the inside of the liquid collection chamber through a limiting shaft hole, the drive gear is rotatably engaged with one end of the inside of the liquid collection chamber through a groove, the drive shaft is meshed with the toothed groove on the outer surface of one end of the filter barrel through the drive gear at one end, and the two ends of the filter barrel are rotatably engaged with the inside of the protective cover through limiting annular grooves.

[0012] As a preferred embodiment of the present invention: the fan-shaped sealing plate at one end of the hopper abuts against one end face of the filter barrel, the spiral feeding shaft at one end of the drive shaft is rotatably engaged with the bottom of the hopper, the first drive motor is fixedly connected to the top of the stabilizer, one end of the threaded rod is rotatably engaged with one end of the stabilizer, and the discharge side hole is aligned with the outer support platform at one end of the hopper.

[0013] A method for treating wastewater from a fluidized bed defluorination reaction device includes: Step 1: After the wastewater undergoes a fluidized bed defluorination reaction, fluoride precipitates and carrier particles are generated. Then, solid-liquid separation is performed. The wastewater containing the particle precipitate is first transported through the feed pipe to the inside of the conveying and filtering components, so that the filtering components can perform solid-liquid separation on the wastewater. Step 2: After a long period of filtration, the filtration angle needs to be adjusted to ensure filtration efficiency. First, control the second drive motor to rotate the arc-shaped filter screen by 60 degrees to replace the arc-shaped filter screen. This will cause the arc-shaped filter screen containing fluoride precipitate particles to rotate to the top. Then, control the first drive motor to drive the scraper fan to scrape off the fluoride precipitate particles inside the filter barrel. Step 3: Simultaneously, the cleaning brush at the bottom of the arc-shaped frame will clean the outer surface of the arc-shaped filter screen to ensure that the arc-shaped filter screen is not blocked. The conveying component will collect the filtered wastewater and discharge it. Then, the rotating screw feed shaft will transport the fluoride-containing precipitated particles discharged from one end of the filter barrel to the next process for treatment.

[0014] The beneficial effects of this invention are: (1) By integrating a filter component inside the conveying component, the present invention can achieve real-time dynamic filtration of wastewater flowing into the conveying component, ensuring that impurity separation and conveying processes are synchronized. In response to the problem of filter screen clogging that may occur during long-term operation, the working position of the arc-shaped filter screen can be automatically switched without stopping the equipment by controlling the rotation of the filter barrel. When a large amount of impurities are attached to the filter screen in a certain area, the second drive motor can be controlled to drive the filter barrel to rotate, which can quickly rotate the arc-shaped filter screen in the clean area to the filtration station, ensuring the continuity and stability of wastewater filtration. At the same time, the cleaning component set on the upper part of the filter component can clean the arc-shaped filter screen that has left the working station in real time through the synergistic action of the cleaning brush and the flexible scraper, effectively removing the impurities attached to the surface, restoring the filtration performance of the filter screen and allowing it to be reused. This reduces the cost of manual maintenance and avoids production interruption caused by frequent filter screen replacement, significantly improving the operating efficiency and economy of the wastewater filtration system. (2) By cooperating with the cleaning component, the filtering component and the conveying component, the present invention can efficiently separate solid and liquid in the wastewater after the fluidized bed defluorination reaction, and automatically feed the wastewater. At the same time, it can achieve self-cleaning function, ensuring continuous filtration and processing of wastewater. Attached Figure Description

[0015] The invention will now be further described with reference to the accompanying drawings.

[0016] Figure 1 A schematic diagram of a fluidized bed defluorination reaction wastewater treatment equipment; Figure 2 A schematic diagram of the front end structure of the cleaning component; Figure 3 A schematic diagram of the rear structure of the cleaned component; Figure 4 This is a schematic diagram of the side structure of the filter component; Figure 5 This is a schematic diagram of the end structure of the filter component; Figure 6 This is a schematic diagram of the rear end structure of the conveying component; Figure 7 This is a schematic diagram of the front end structure of the conveying component. 1. Cleaning component; 11. Connecting frame; 12. First drive motor; 13. First transmission chain; 14. First transmission sprocket; 15. Threaded rod; 16. Scraper fan; 17. Arc frame; 18. Cleaning brush; 19. Wedge-shaped scraper; 110. Flexible scraper; 2. Filtering component; 21. Second transmission chain; 22. Second drive motor; 23. Second transmission sprocket; 24. Transmission gear; 25. Transmission shaft; 26. Spiral feed shaft; 27. Toothed groove; 28. Filtering element; Filter barrel; 29. ​​Arc-shaped filter screen; 210. Divider plate; 3. Conveying component; 31. Discharge side hole; 32. Feeding hole; 33. Support frame; 34. Groove; 35. Control cabinet; 36. Limiting hole; 37. Arc-shaped cover plate; 38. Limiting annular groove; 39. External material support platform; 310. Liquid collection tank; 311. Discharge pipe; 312. Limiting shaft hole; 313. Feed pipe; 314. Stabilizing frame; 315. Fan-shaped sealing plate; 316. Collection hopper; 317. Protective cover. Detailed Implementation

[0017] 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, other embodiments obtained by those skilled in the art without creative effort are all within the scope of protection of the present invention.

[0018] Please see Figures 1-7 As shown, the present invention is a fluidized bed defluorination reaction wastewater treatment device, including a conveying component 3, a filter component 2 is arranged inside the conveying component 3, and a cleaning component 1 is arranged inside the conveying component 3 and at the top of the filter component 2. One end of the cleaning component 1 slides back and forth on the top of the filter component 2 to clean the material on the inner and outer surfaces of the filter component 2. When the cleaning component 1 is running, it can discharge the material inside and outside the filter component 2. The filter element 2 is located inside the conveying element 3. It is used to filter the wastewater and the material that needs to be recycled, and the filtration position can be adjusted. The conveying component 3 is used for conveying and discharging wastewater, and can collect the material scraped off by the cleaning component 1. It can also limit the movement of the cleaning component 1 and the filter component 2, and can also block the filter end of the filter component 2.

[0019] The cleaning component 1 includes a connecting frame 11 and a first drive motor 12. A threaded rod 15 is threadedly connected to the middle of one end of the connecting frame 11. A scraper fan 16 is symmetrically fixedly connected to one end of the connecting frame 11. An arc-shaped frame 17 is fixedly connected to one end of the connecting frame 11 and located at the outer edge of the scraper fan 16. A cleaning brush 18 is evenly arranged on the inner surface of the arc-shaped frame 17. A wedge-shaped scraper strip 19 is arranged on the outer periphery of the scraper fan 16. Flexible scraper plates 110 are fixedly connected to the bottom of both ends of the arc-shaped frame 17. A first transmission sprocket 14 is fixedly installed at one end of the threaded rod 15 and the first drive motor 12. A first transmission chain 13 is meshed with the outer surface of the first transmission sprocket 14.

[0020] The filter component 2 includes a second drive motor 22 and a drive shaft 25. A second drive sprocket 23 is fixedly mounted on the outer surface of one end of both the second drive motor 22 and the drive shaft 25. A second drive chain 21 is meshed with the outer surface of the second drive sprocket 23. A drive gear 24 is fixedly mounted on the outer surface of one end of the drive shaft 25. A spiral feeding shaft 26 is fixedly connected to the other end of the drive shaft 25. A filter barrel 28 is meshed with the outer surface of the drive gear 24. Toothed grooves 27 are evenly opened on the outer surface of one end of the filter barrel 28. A partition plate 210 is evenly arranged on the inner surface of the filter barrel 28. An arc-shaped filter screen 29 is evenly fixedly mounted on the outer surface of the filter barrel 28.

[0021] The conveying component 3 includes a support frame 33, a liquid collection chamber 310 is provided at the top center of the support frame 33, a feed pipe 313 is fixedly connected to the top of the support frame 33 and at one end of the liquid collection chamber 310, a collection hopper 316 is fixedly connected to the top of the support frame 33 and at the other end of the liquid collection chamber 310, a fan-shaped sealing plate 315 is provided at the bottom of one end of the collection hopper 316, a limiting annular groove 38 is provided on the outer periphery of one end face of the collection hopper 316, a discharge hole 32 is provided at the bottom of the other end of the collection hopper 316, a protective cover 317 is provided on the top of the liquid collection chamber 310, and an arc-shaped cover plate 37 is rotatably installed on the top of the protective cover 317; Limiting holes 36 are evenly opened in the middle of one end face of the protective cover 317. Discharge side holes 31 are symmetrically opened on both sides of the bottom of the other end face of the protective cover 317. A groove 34 is opened at one end of the liquid collection tank 310 and at one end edge of the feed pipe 313. A control cabinet 35 is set on the outside of one end of the support frame 33 and on the side of the feed pipe 313. A stabilizing frame 314 is welded to the top of the feed pipe 313. An outer material support platform 39 is set at the bottom of both sides of the inside of the fan-shaped sealing plate 315. A discharge pipe 311 is fixedly connected to the bottom outer surface of the liquid collection tank 310. A limiting shaft hole 312 is opened at one end of the outer surface of the liquid collection tank 310.

[0022] One end of the connecting frame 11 is slidably inserted into one end of the protective cover 317 through the limiting hole 36, which can limit the reciprocating sliding of the connecting frame 11. One end of the threaded rod 15 is rotatably engaged with the protective cover 317 through the limiting hole 36, which can limit the end of the threaded rod 15. The scraper fan 16 at one end of the connecting frame 11 is inserted into the interior of the partitioned filter barrel 28 through the partition plate 210, which can scrape off the particles filtered out inside the filter barrel 28.

[0023] The wedge-shaped scraper 19 on the periphery of the scraper fan 16 contacts the surface of the arc-shaped filter screen 29 and the separator plate 210 to ensure that the sedimented particles can be scraped off. The arc-shaped frame 17 contacts the outer surface of the arc-shaped filter screen 29 through the cleaning brush 18 on the inner surface, which can clean the outer surface of the arc-shaped filter screen 29. The arc-shaped frame 17 abuts against the outer material support platform 39 on both sides inside the protective cover 317 through the flexible scraper 110 at both ends, which can scrape off the external particles.

[0024] The drive shaft 25 is inserted into the liquid collection tank 310 through the limiting shaft hole 312, which can limit the rotation of the drive shaft 25. The drive gear 24 is rotated and engaged with one end of the liquid collection tank 310 through the groove 34. The drive shaft 25 is connected to the toothed groove 27 on the outer surface of one end of the filter barrel 28 through the drive gear 24 at one end, which can control the rotation of the filter barrel 28 to replace the arc-shaped filter screen 29 when the drive shaft 25 rotates. The two ends of the filter barrel 28 are rotated and engaged with the inside of the protective cover 317 through the limiting annular groove 38, which can limit the rotation of the filter barrel 28.

[0025] The fan-shaped sealing plate 315 at one end of the collecting hopper 316 abuts against one end face of the filter barrel 28, which can block the filter area located at the bottom inside the filter barrel 28. The spiral feeding shaft 26 at one end of the drive shaft 25 is rotatably engaged with the bottom end inside the collecting hopper 316. The first drive motor 12 is fixedly connected to the top of the stabilizer 314. One end of the threaded rod 15 is rotatably engaged with one end of the stabilizer 314. The discharge side hole 31 is aligned with the outer support platform 39 at one end of the collecting hopper 316, which facilitates the discharge of particles on the surface of the outer support platform 39 into the interior of the collecting hopper 316 for collection.

[0026] A method for treating wastewater from a fluidized bed defluorination reaction device includes: Step 1: After the wastewater undergoes a fluidized bed defluorination reaction, fluoride precipitates and carrier particles are generated. Then, solid-liquid separation treatment is carried out. The wastewater containing particle precipitates is first transported through the feed pipe 313 to the inside of the conveying component 3 and the filter component 2, so that the filter component 2 can perform solid-liquid separation on the wastewater. Step 2: After a long period of filtration, the filtration angle needs to be adjusted to ensure filtration efficiency. First, control the second drive motor 22 to rotate the arc-shaped filter screen 29 by 60 degrees to replace the arc-shaped filter screen 29, so that the arc-shaped filter screen 29 containing fluoride precipitate particles rotates to the top. Then, control the first drive motor 12 to drive the scraper fan 16 to scrape off the fluoride precipitate particles inside the filter barrel 28. Step 3: Simultaneously, the cleaning brush 18 at the bottom of the arc frame 17 will clean the outer surface of the arc filter screen 29 to ensure that the arc filter screen 29 is not blocked. The conveying component 3 will collect the filtered wastewater and discharge it. Then, the rotating screw feed shaft 26 will transport the fluoride-containing precipitated particles discharged from one end of the filter bucket 28 to the next process for treatment.

[0027] The working principle of this invention: After the wastewater undergoes a fluidized bed defluorination reaction, a mixed system of fluoride precipitate and carrier particles is generated. The subsequent purification process requires a dedicated solid-liquid separation system. The core of this system consists of a cleaning component 1, a filtering component 2, and a conveying component 3. During operation, the wastewater containing particulate precipitate is first conveyed to the conveying component 3 and the filtering component 2 through the feed pipe 313. The wastewater then enters one of the filtration areas inside the filter tank 28. The filter tank 28 is divided into three independent filtration areas by an arc-shaped partition plate 210. Each area is equipped with an arc-shaped filter screen 29. The ends of the filtration areas at the lower filtration station are all blocked by fan-shaped sealing plates 315 to ensure that the wastewater can only be filtered through the arc-shaped filter screen 29. The filtered clean water then flows downward to the collection tank 310 for collection and buffering. To avoid the accumulation and blockage of particles trapped on the surface of the arc-shaped filter screen 29 due to prolonged filtration, which would affect filtration efficiency, the system needs to periodically switch filtration zones. The zone switching process is as follows: First, the second drive motor 22 is started, and the power is transmitted to the drive shaft 25 through the second transmission chain 21 and the second transmission sprocket 23 connected at one end, causing the drive shaft 25 to rotate synchronously. When the drive shaft 25 rotates, the transmission gear 24 at one end meshes with the toothed groove 27 on the outside of the filter barrel 28, ultimately driving the filter barrel 28 to rotate around the central axis, so that the new arc-shaped filter screen 29 is switched to the filtration station to continuously filter wastewater, while the old filter screen with fluoride precipitate particles is rotated to the upper cleaning station. Wastewater filtration is not interrupted during the entire switching process. During the filter cleaning stage, the first drive motor 12 is started, and power is transmitted to the threaded rod 15 via the first transmission chain 13 and the first transmission sprocket 14, causing the threaded rod 15 to rotate stably. When the threaded rod 15 rotates, the connecting frame 11 on its outer surface slides laterally along the rod body. At the same time, the connecting frame 11 drives the scraper fan 16 at one end to insert into the two filter areas to be cleaned above the filter barrel 28. The curvature of the scraper fan 16 is consistent with the inner wall of the filter barrel 28, and they fit tightly. The wedge-shaped scraper strips 19 around the scraper fan 16 have both elasticity and... The wear-resistant material adheres tightly to the surface of the arc-shaped filter screen 29 and the partition plate 210, gradually scraping away the attached fluoride precipitate particles with high scraping efficiency until the scraper fan 16 moves to the other end of the filter barrel 28. The scraped precipitate particles naturally fall into the collection hopper 316 below. The collection hopper 316 has a conical structure, which facilitates particle aggregation. Then, the first drive motor 12 is controlled to rotate in reverse, driving the connecting frame 11 to slide back along the threaded rod 15, and finally causing the scraper fan 16 to detach from the filter barrel 28 and return to its initial position. It is worth noting that during the movement of the connecting frame 11, the cleaning brushes 18 will also slide synchronously on the outer surface of the arc-shaped filter screen 29 via the arc-shaped frames 17 on both sides. This allows for deep cleaning of the outer surface of the filter screen, effectively clearing the tiny particles remaining in the filter screen mesh, ensuring the reusability of the arc-shaped filter screen 29. After cleaning, the filter screen throughput can be restored to a better state. When the cleaning brushes 18 slide back and forth, some smaller fluoride precipitate particles will be swept to the upper surface of the outer support platforms 39 on both sides. The outer support platforms 39 have a low coefficient of friction after surface treatment, facilitating particle sliding. At the same time, the arc-shaped frame 11... The flexible scrapers 110 at both ends of the frame 17 can move with the arc frame and closely fit the surface of the outer material support platform 39 to scrape off the residual sediment on the surface of the outer material support platform 39. The scraping effect is good. The sediment is guided into the collection hopper 316 through the discharge side hole 31 at the end of the outer material support platform to avoid particle blockage. In addition, when the drive shaft 25 rotates, it will drive the spiral feeding shaft 26 at one end to rotate at the bottom of the collection hopper 316. The fluoride sediment particles collected in the collection hopper 316 can be stably transported to the next filter press dewatering process for processing, which is convenient for subsequent resource utilization or safe disposal. In summary, through the coordinated operation of cleaning component 1, filtration component 2, and conveying component 3, this system adopts an integrated design of "filtration-switching-cleaning-discharge," enabling efficient solid-liquid separation, automatic discharge, and filter self-cleaning of fluidized bed defluoridation wastewater. The system has stable processing capacity, excellent fluoride removal effect, and requires no manual intervention throughout the entire operation, exhibiting a high degree of automation. This effectively ensures the continuity and stability of wastewater filtration and processing, while reducing equipment maintenance costs and labor intensity. It is suitable for large-scale treatment scenarios of fluidized bed defluoridation wastewater in industries such as chemical and metallurgical processing.

[0028] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A fluidized bed defluorination reaction wastewater treatment device, comprising a conveying component (3), characterized in that, The conveying component (3) is provided with a filter component (2) inside, and a cleaning component (1) is provided inside the conveying component (3) and at the top of the filter component (2). One end of the cleaning component (1) slides back and forth on the top of the filter component (2) to clean the material on the inner and outer surfaces of the filter component (2). When the cleaning component (1) is running, it can discharge the material inside and outside the filter component (2). The filter element (2) is located inside the conveying element (3) and is used to filter the wastewater and the material that needs to be recycled. It can also adjust the filtration position. The conveying component (3) is used for conveying and discharging wastewater, and can collect the material scraped off by the cleaning component (1), while also limiting the cleaning component (1) and the filter component (2), and can also block the filter end of the filter component (2).

2. The fluidized bed defluorination reaction wastewater treatment equipment according to claim 1, characterized in that, The cleaning component (1) includes a connecting frame (11) and a first drive motor (12). A threaded rod (15) is threadedly connected to the middle of one end of the connecting frame (11). A scraper fan (16) is symmetrically fixedly connected to one end of the connecting frame (11). An arc frame (17) is fixedly connected to one end of the connecting frame (11) and located at the outer edge of the scraper fan (16). A cleaning brush (18) is evenly arranged on the inner surface of the arc frame (17). A wedge-shaped scraper (19) is arranged on the outer periphery of the scraper fan (16). Flexible scrapers (110) are fixedly connected to the bottom of both ends of the arc frame (17). A first transmission sprocket (14) is fixedly installed at one end of the threaded rod (15) and the first drive motor (12). A first transmission chain (13) is meshed with the outer surface of the first transmission sprocket (14).

3. The fluidized bed defluorination reaction wastewater treatment equipment according to claim 2, characterized in that, The filter component (2) includes a second drive motor (22) and a drive shaft (25). A second drive sprocket (23) is fixedly installed on the outer surface of one end of the second drive motor (22) and the drive shaft (25). A second drive chain (21) is meshed with the outer surface of the second drive sprocket (23). A drive gear (24) is fixedly installed on the outer surface of one end of the drive shaft (25). A spiral feeding shaft (26) is fixedly connected to the other end of the drive shaft (25). A filter barrel (28) is meshed with the outer surface of the drive gear (24). Toothed grooves (27) are evenly opened on the outer surface of one end of the filter barrel (28). A partition plate (210) is evenly arranged on the inner surface of the filter barrel (28). An arc-shaped filter screen (29) is evenly fixedly installed on the outer surface of the filter barrel (28).

4. The fluidized bed defluorination reaction wastewater treatment equipment according to claim 3, characterized in that, The conveying component (3) includes a support frame (33), a liquid collection chamber (310) is provided at the top center of the support frame (33), a feed pipe (313) is fixedly connected to the top of the support frame (33) and at one end of the liquid collection chamber (310), a collection hopper (316) is fixedly connected to the top of the support frame (33) and at the other end of the liquid collection chamber (310), a fan-shaped sealing plate (315) is provided at the bottom of one end of the collection hopper (316), a limiting annular groove (38) is opened on the outer periphery of one end face of the collection hopper (316), a discharge hole (32) is provided at the bottom of the other end of the collection hopper (316), a protective cover (317) is provided on the top of the liquid collection chamber (310), and an arc-shaped cover plate (37) is rotatably installed on the top of the protective cover (317). Limiting holes (36) are evenly opened in the middle of one end face of the protective cover (317). Discharge side holes (31) are symmetrically opened on both sides of the bottom of the other end face of the protective cover (317). A groove (34) is opened at one end of the liquid collection tank (310) and at one end edge of the feed pipe (313). A control cabinet (35) is set on the outside of one end of the support frame (33) and on the side of the feed pipe (313). A stabilizing frame (314) is welded to the top of the feed pipe (313). An outer material support platform (39) is set at the bottom of both sides of the fan-shaped sealing plate (315). A discharge pipe (311) is fixedly connected to the bottom outer surface of the liquid collection tank (310). A limiting shaft hole (312) is opened at one end of the outer surface of the liquid collection tank (310).

5. The fluidized bed defluorination reaction wastewater treatment equipment according to claim 4, characterized in that, One end of the connecting frame (11) is slidably inserted into one end of the protective cover (317) through the limiting hole (36), and one end of the threaded rod (15) is rotatably engaged with the protective cover (317) through the limiting hole (36). The scraper fan (16) at one end of the connecting frame (11) is inserted into the interior of the partitioned filter barrel (28) through the partition plate (210).

6. The fluidized bed defluorination reaction wastewater treatment equipment according to claim 5, characterized in that, The wedge-shaped scraper (19) around the scraper fan (16) contacts the surface of the arc-shaped filter screen (29) and the partition plate (210). The arc-shaped frame (17) contacts the outer surface of the arc-shaped filter screen (29) through the cleaning brush (18) on the inner surface. The arc-shaped frame (17) abuts against the outer material support platform (39) on both sides inside the protective cover (317) through the flexible scraper (110) at both ends.

7. The fluidized bed defluorination reaction wastewater treatment equipment according to claim 6, characterized in that, The drive shaft (25) is inserted into the inside of the liquid collection tank (310) through the limiting shaft hole (312). The drive gear (24) is rotated and engaged with one end of the liquid collection tank (310) through the groove (34). The drive shaft (25) is connected to the toothed groove (27) on the outer surface of one end of the filter barrel (28) through the drive gear (24) at one end. The two ends of the filter barrel (28) are rotated and engaged with the inside of the protective cover (317) through the limiting annular groove (38).

8. The fluidized bed defluorination reaction wastewater treatment equipment according to claim 7, characterized in that, The fan-shaped sealing plate (315) at one end of the collecting hopper (316) abuts against one end face of the filter barrel (28), the spiral feeding shaft (26) at one end of the drive shaft (25) is rotatably engaged with the bottom of the collecting hopper (316), the first drive motor (12) is fixedly connected to the top of the stabilizer (314), one end of the threaded rod (15) is rotatably engaged with one end of the stabilizer (314), and the discharge side hole (31) is aligned with the outer support platform (39) at one end of the collecting hopper (316).

9. A method for treating wastewater from a fluidized bed defluorination reaction, using the fluidized bed defluorination reaction wastewater treatment equipment as described in claim 8, characterized in that... include: Step 1: After the wastewater undergoes a fluidized bed defluorination reaction, fluoride precipitates and carrier particles are generated. Then, solid-liquid separation treatment is carried out. First, the wastewater containing particle precipitates is transported through the feed pipe (313) to the inside of the conveying component (3) and the filter component (2), so that the filter component (2) can perform solid-liquid separation on the wastewater. Step 2: After a long period of filtration, the filtration angle needs to be adjusted to ensure filtration efficiency. First, control the second drive motor (22) to drive the arc-shaped filter screen (29) to rotate 60 degrees to replace the arc-shaped filter screen (29), so that the arc-shaped filter screen (29) containing fluoride precipitate particles rotates to the top. Then, control the first drive motor (12) to drive the scraper fan (16) to scrape off the fluoride precipitate particles inside the filter barrel (28). Step 3: At the same time, the cleaning brush (18) at the bottom of the arc frame (17) will clean the outer surface of the arc filter screen (29) to ensure that the arc filter screen (29) is not blocked. The conveying component (3) will collect the filtered wastewater and discharge it. Then, the rotating screw feed shaft (26) will transport the fluoride-containing precipitated particles discharged from one end of the filter bucket (28) to the next process for processing.

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