Uranium-containing radioactive wastewater treatment device and treatment method thereof

Abstract

The invention discloses a uranium-containing radioactive wastewater treatment device and a treatment method thereof. The specific treatment method comprises the following steps: 1) pretreatment; 2) oxidation treatment; (3) mixing medicaments; 4) separation treatment; 5) ion exchange; (6) treating eluent and sludge; the uranium-containing radioactive wastewater treatment device comprises a treatment box, a separation device, a loosening mechanism and a concentration device, two groups of water inlets are formed in the top of the treatment box, a water outlet and a sewage outlet are formed in one side of the treatment box, and a plurality of guide grooves I are respectively formed in a pair of corresponding inner walls of the treatment box; the two sets of separation devices are arranged on the two sides of the treatment box correspondingly, and the multiple sets of loosening mechanisms are arranged on the inner sides of the two sets of separation devices correspondingly; and the concentration device is arranged below the treatment box. The uninterrupted treatment of uranium-containing radioactive wastewater is realized through the cooperation of the plurality of loosening mechanisms and the two groups of parallel separation devices, and meanwhile, the concentration and separation of uranium-containing precipitates are realized through the concentration device.

Description

Technical Field

[0001] The present invention belongs to the technical field of radioactive wastewater treatment, and particularly relates to a uranium-containing radioactive wastewater treatment device and a treatment method thereof. Background Art

[0002] Uranium-containing radioactive wastewater usually comes from nuclear fuel cycle, nuclear facility decommissioning, medical or industrial applications; since uranium is radioactive and has high chemical toxicity, it is necessary to harmlessly treat the radioactive wastewater to prevent the uranium-containing radioactive wastewater from harming the environment and human body;

[0003] To solve the pollution problem of uranium-containing radioactive wastewater, methods such as chemical precipitation method, evaporation method, biological treatment method, plasma cracking technology, membrane treatment technology, etc. are usually used to treat uranium-containing radioactive wastewater; for example, the prior art with publication number CN 117902739 A discloses a new biological treatment device for adsorbing uranium-containing wastewater using yeast. This device filters the yeast through a cell filter, and then the first liquid guide pipe re-transports the clear liquid of the uranium-containing wastewater above the cell filter to the upper part of the partition plate for treating the uranium-containing wastewater with yeast again; however, the treatment cycle of using yeast to treat wastewater is not only long, but the treatment effect is also easily restricted by environmental conditions; the prior art with publication number CN 108766611 A discloses a zero-emission treatment device for a strong nitric acid system uranium-containing waste liquid and a treatment method thereof; this device adopts a process route of "neutralization precipitation filtration + electrochemical heavy metal removal + selective high-efficiency adsorption + membrane separation and concentration" to treat uranium-containing radioactive wastewater. Although electrochemical heavy metal removal can recover uranium in the wastewater, the energy consumption of the device is relatively high, and the electrodes in the device are prone to passivation and need to be maintained frequently;

[0004] The above chemical precipitation method makes the flocculant and precipitant co-precipitate with trace radionuclides and other harmful elements in the waste liquid, or agglomerate into fine precipitable particles, and combine with the suspended solids in the water to form loose fluff particles, thereby adsorbing the radionuclides in the water; it can not only treat low-level radioactive wastewater, but also concentrate high-level radioactive wastewater, and the radioactive activity removal coefficient is above 10; for example, a uranium-containing wastewater treatment device with the prior art publication number CN 221551510 U; this device uses an organic flocculant to flocculate and precipitate the uranium-containing wastewater, and realizes automatic solid-liquid separation through a centrifuge; subsequently, the flocculant in the uranium-containing precipitate can be burned out by roasting and calcination; the centrifuged clear liquid is further recovered for uranium in the waste liquid through spray drying, and the uranium particles after spray drying are automatically discharged; after the exhaust gas passes through spray drying and enters the plasma cracking system, the organic matter in the uranium-containing wastewater is completely cracked into harmless small molecule substances, and uranium slag can be regularly recovered at the bottom of the cracking furnace; however, the uranium-containing precipitate generated during the treatment of uranium-containing radioactive wastewater will adhere to the device, and may affect the treatment efficiency of the device for uranium-containing radioactive wastewater after long-term accumulation, and when cleaning the accumulated uranium-containing precipitate in the device, the device needs to stop running. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a uranium-containing radioactive wastewater treatment device and its treatment method. The present invention realizes the continuous treatment of uranium-containing radioactive wastewater through the cooperation of several loosening mechanisms and a double-group parallel separation device, and at the same time realizes the concentration and separation of uranium-containing precipitate through a concentration device.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0007] A uranium-containing radioactive wastewater treatment device and its treatment method are as follows:

[0008] 1) Pretreatment: Filter out the larger particulate impurities in the uranium-containing radioactive wastewater through a 4-stage grille, and the pore diameters of the grilles through which the uranium-containing radioactive wastewater passes in sequence are 15-20 mm, 10-15 mm, 5-10 mm, and 1-5 mm; subsequently, add a neutralizing agent to the uranium-containing radioactive wastewater, and the dosage of the neutralizing agent is 0.5-5 L / m 3 , and adjust the pH value of the uranium-containing radioactive wastewater to 6-9;

[0009] 2) Oxidation treatment: Add 50-200 mg / L of H2O2 to the uranium-containing radioactive wastewater and react for 30-60 min to destroy the uranium complex structure;

[0010] 3) Agent mixing: Add the precipitant and flocculant into the uranium-containing radioactive wastewater. The dosage of the flocculant is 0.5 - 2.7 mg / L, and stir the uranium-containing radioactive wastewater at a speed of 52 - 70 rpm for 1 - 10 minutes through a stirring device to preliminarily mix the precipitant, flocculant and uranium-containing radioactive wastewater;

[0011] 4) Separation treatment: Feed the uranium-containing radioactive wastewater treated in step 3) into the treatment tank in the uranium-containing radioactive wastewater treatment device through the water inlet, so that the two sets of separation devices quickly separate the uranium-containing precipitates in the wastewater. Subsequently, the uranium-containing radioactive wastewater enters the bottom of the treatment tank, and the uranium-containing precipitates in the wastewater are concentrated by the concentration device. While the concentration treatment is carried out, the concentration device controls the flow of the wastewater to further mix the uranium-containing radioactive wastewater with the precipitant and flocculant; The supernatant generated after the treatment is discharged from the treatment tank through the drain port, and the uranium-containing precipitates concentrated by the concentration device are discharged from the treatment tank through the sewage discharge port, and the water content of the separated sludge is ≤ 65%;

[0012] 5) Ion exchange: The supernatant selectively adsorbs residual uranium ions through a chelating resin column, so that the uranium concentration in the supernatant is reduced to < 0.05 mg / L and then meets the standard for discharge or reuse; After the chelating resin column is saturated with adsorption, it is eluted with a mixed solution of 5 - 10% HCl and 0.1 - 0.5 mol / L NaCl for uranium and reused after regeneration;

[0013] 6) Eluate and sludge treatment: Feed the ion exchange eluate into an evaporator, concentrate the volume of the original solution to 1 / 10 - 1 / 20 of the original through evaporation and concentration, and mix the concentrated product with the sludge at a ratio of 1:1 for solidification treatment.

[0014] The uranium-containing radioactive wastewater treatment device described in step 4) includes a treatment tank, a separation device, a loosening mechanism, and a concentration device; Two water inlets are provided at the top of the treatment tank, a drain port and a sewage discharge port are provided on one side, and a number of guiding grooves Ⅰ are respectively provided on a pair of inner walls corresponding to the treatment tank; There are two sets of separation devices, which are respectively arranged on both sides of the treatment tank, and a number of loosening mechanisms are respectively arranged inside the two sets of separation devices; The concentration device is arranged below the treatment tank;

[0015] The separation device includes connecting plate I, connecting plate II, bottom plate, connecting plate III, support plate, baffle mechanism, electric push cylinder I, rack I, and collection mechanism; both ends of connecting plate I are fixedly connected to the treatment tank, and a number of guide grooves II are provided on one side of connecting plate I. A number of support plates with multiple through grooves on one side are fixedly connected in a stepped manner between connecting plate I and the treatment tank; connecting plate II and connecting plate III are respectively located on both sides of a number of support plates and are fixedly connected to connecting plate I and the treatment tank, and the bottom of connecting plate III is fixedly connected to one support plate; the bottom plate is fixedly connected between the treatment tank, connecting plate I, and connecting plate II; the cylinder body of electric push cylinder I is fixedly connected to the other side of connecting plate I through a connecting seat, and the extending end is fixedly connected to rack I slidably connected to connecting plate I; the collection mechanism is arranged between the bottom plate and the support plate, and a number of baffle mechanisms are respectively arranged in the gaps between connecting plate II and a number of support plates.

[0016] The baffle mechanism includes scraper I, baffle plate I, baffle plate II, sliding rod, rotating plate, and gear I; one side of the rotating plate is rotatably connected to one support plate, the side wall is attached to the side of the upper-level support plate, and one end of the rotating plate is fixedly connected to gear I meshing below rack I through a connecting shaft passing through the through hole on connecting plate I; scraper I, baffle plate I, and baffle plate II fixedly connected together through the connecting shaft are slidably connected to the upper-level support plate, and the connecting seat at the top of baffle plate II is rotatably connected to the connecting seat at the top of the rotating plate through a connecting rod; a pair of sliding rods are provided, which are respectively fixedly connected to both ends of scraper I, baffle plate I, and baffle plate II, and the pair of sliding rods are respectively slidably connected to guide groove II and guide groove I; one side of the rotating plate in the lowermost baffle mechanism is rotatably connected to connecting plate II, and the rest are the same as other baffle mechanisms.

[0017] The collection mechanism includes support rollers, conveyor belt, spiral discharger, spiral blades, and motor I; the conveyor belt is arranged outside a number of support rollers, and both ends of the support rollers are rotatably connected to connecting plate I and the treatment tank; motor I is fixedly connected to connecting plate I through a motor seat, and the connecting shaft of one support roller passes through the through hole on connecting plate I and is fixedly connected to the output end of motor I; the spiral discharger is fixedly connected to the bottom of connecting plate I, the discharge port of the spiral discharger is connected to the sludge collection device through a pipeline passing through the connecting hole on the treatment tank, and the spiral blades on the spiral discharger pass through the through groove on connecting plate I and are arranged at one end of the bottom plate.

[0018] The loosening mechanism includes an electric push cylinder II, a protective box, a mounting plate I, an electric push cylinder III, a rack II, an electric push cylinder IV, a connection box I, a mounting plate II, and a stirring rod. There are a pair of electric push cylinders II, and the cylinders of the pair of electric push cylinders II are respectively arranged inside a pair of protective boxes fixedly connected to the connecting plate I and the processing box. The extending ends pass through the through holes on the protective boxes and are fixedly connected to both ends of the mounting plate I. There are a pair of electric push cylinders IV, and the cylinders of the pair of electric push cylinders IV are respectively arranged inside a pair of connection boxes I fixedly connected to both ends of the mounting plate I. The extending ends pass through the through holes on the connection boxes I and are fixedly connected to both ends of the mounting plate II. The cylinder of the electric push cylinder III is fixedly connected to one side of the mounting plate I through a connecting seat, and the extending end is connected to the rack II slidably connected to the mounting plate I through a connecting block. There are several stirring rods, which are respectively fixedly connected to the mounting plate I, and the bottom ends of the stirring rods are rotatably connected to the mounting plate II.

[0019] The stirring rod is provided with a rotating box, a sleeve box, a connecting shaft, a gear II, a push plate, a rack III, a gear III, and a telescopic rod. The sleeve box is fixedly connected to the mounting plate I, and the top of the rotating box is slidably connected to the through groove on the support plate, and the bottom passes through the through hole on the sleeve box through a connecting pipe and is fixedly connected to the gear II meshing with one side of the rack II. The bottom of the connecting shaft is rotatably connected to the mounting plate II, and the top passes through the connecting pipe at the bottom of the rotating box and the through hole on the gear II and is rotatably connected to the push plate. There are a pair of rack IIIs, which are slidably connected diagonally inside the rotating box, and the bottom of the rack III is fixedly connected to the push plate. There are several gear IIIs, which are respectively meshed with one side of the pair of rack IIIs, and one side of the gear III is rotatably connected to the rotating box through a connecting seat, and the other side is provided with a threaded rod. There are several telescopic rods, and one end of the telescopic rod is slidably connected to the through hole on the rotating box, and the other end is threadedly connected to the threaded rod on the gear III.

[0020] The concentration device includes a moving frame, a lead screw I, a guide shaft I, a scraper II, an electric motor I, a scraper III, an electric motor II, a filtering mechanism, and a separating mechanism. A pair of support columns are symmetrically arranged on both sides of the moving frame, and a plurality of filter plates are fixedly connected between the moving frame and the support columns. The lead screw I is threadedly connected to the top of the moving frame. One end of the lead screw I is rotatably connected to the processing tank, and the other end passes through the through hole in the processing tank and is fixedly connected to the output end of the motor II. The motor II is fixedly connected to the processing tank through a motor base. The guide shaft I is slidably connected to the top of the moving frame, and both ends of the guide shaft I are fixedly connected to the processing tank. There are two groups of scrapers II, which are respectively slidably connected to both sides of the moving frame. One side of the scraper II is slidably connected to the guide shaft II provided on the moving frame, and the other side is threadedly connected to the lead screw II rotatably connected to the moving frame. The top of the lead screw II passes through the through hole in the moving frame and is fixedly connected to a sprocket. The electric motor I is fixedly connected to the inner side of the moving frame through a connecting seat, and the sprocket on the output end of the electric motor I is connected to the sprocket on the lead screw II through a chain. There are several scrapers III, which are respectively arranged on both sides of the two groups of scrapers II. One side of the scraper III is slidably connected to the guide shaft III provided on the moving frame, and the other side is threadedly connected to the lead screw III rotatably connected to the moving frame. The top of the lead screw III passes through the through hole in the moving frame and is fixedly connected to a sprocket. The electric motor II is fixedly connected to the inner side of the moving frame through a connecting seat, and the sprocket on the output end of the electric motor II is connected to the sprocket on the lead screw III through a chain. There are several filtering mechanisms, which are respectively located on both sides of the moving frame and fixedly connected to the support columns. The separating mechanism is arranged below the moving frame and the filtering mechanism.

[0021] The filtering mechanism includes a connecting box II, an electric push cylinder V, a sliding box I, a connecting plate IV, a wing plate, a rotating paddle, an electric push cylinder VI, a connecting rod, a blocking block, and a spring piece. There are several electric push cylinders V, the cylinder bodies of the electric push cylinders V are fixedly connected in the connecting box II, and the extending ends are fixedly connected to the sliding box I slidably connected to one side of the connecting box II. The other side of the connecting box II is fixedly connected to the moving frame and the support columns. There are several electric push cylinders VI, the cylinder bodies of the electric push cylinders VI are fixedly connected to the sliding box I, and the extending ends pass through the through holes in the sliding box I and are fixedly connected to the connecting plate IV. Several rotating paddles are fixedly connected to the wing plates rotatably connected to both sides of the connecting plate IV through a connecting frame, and there are several filtering holes on the wing plates. There are several blocking blocks, which are respectively rotatably connected to one end of the connecting grooves on the wing plates, and there is a spring piece on one side of the blocking block. There are several pairs of connecting rods, one end of a pair of connecting rods is respectively rotatably connected to both sides of the sliding box I, and the other end is located at the other end of the blocking block and is respectively rotatably connected to the connecting grooves on the two wing plates.

[0022] The separation mechanism is provided with a filter plate I, a filter plate II, a sliding box II, a sliding seat, and a motor III; both ends of the filter plate I are fixedly connected to the processing box; a pair of filter plates II are symmetrically arranged on both sides of the filter plate I, and both ends of the filter plate II are slidingly connected to the support plate on the side wall of the processing box through a sliding seat and a sliding box II with a plurality of gear teeth inside; the motor III is provided with two groups, which are respectively fixedly connected to the bottom of the processing box through the motor seat, and the output end of the motor III passes through the through hole on the processing box and is fixedly linked to the gear, and the gear on the output end of the motor III is meshed with the gear teeth on the sliding box II.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1) The separation device adopts a dual-group parallel design. When one group is being cleaned, the other group can operate normally, thus achieving zero interruption in the treatment of uranium-containing radioactive wastewater and greatly improving the treatment efficiency;

[0025] 2) The electric push cylinder I in the separation device drives the scraper I, baffle I, baffle II and rotating plate in the baffle mechanism to automatically open and close and scrape the slag through the rack I, and cooperates with the collection mechanism to realize the automatic cleaning of uranium-containing sediments;

[0026] 3) The electric push cylinders II, III and IV in the loosening mechanism cooperate to drive the stirring rod to extend and rotate, effectively preventing the uranium-containing sediment from hardening and ensuring the separation efficiency of the baffle mechanism for the uranium-containing sediment;

[0027] 4) The filter mechanism-filter plate collaborative system in the concentration device can realize the integration of filtration, scraping and concentration, and cooperate with the filter plates I and II in the separation mechanism to reduce the moisture content of the sediment and significantly reduce the sludge volume; and while the filter mechanism filters the uranium-containing sediment in the wastewater, it will drive the uranium-containing radioactive wastewater to flow, so that the precipitant and flocculant diffuse to all parts of the uranium-containing radioactive wastewater, thereby improving the removal efficiency of uranium in the uranium-containing radioactivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Attached Figure 1 It is a schematic structural diagram of a uranium-containing radioactive wastewater treatment device and a treatment method thereof according to the present invention;

[0029] Attached Figure 2 Yes Figure 1 Schematic diagram of the connection structure between the separation device and the treatment box;

[0030] Attached Figure 3 Yes Figure 1 A schematic diagram of the structure of the separation device;

[0031] Attached Figure 4 Yes Figure 1 Schematic diagram of the connection structure between the middle support plate and the baffle mechanism;

[0032] AttachedFigure 5 is the structural schematic diagram of the loosening mechanism in Figure 1 ;

[0033] attachment Figure 6 is the attachment Figure 1 of the internal structure schematic diagram of the stirring rod in

[0034] attachment Figure 7 is the attachment Figure 1 of the sectional structure schematic diagram of the stirring rod in

[0035] attachment Figure 8 is the attachment Figure 1 of the structural schematic diagram of the partitioning mechanism in

[0036] attachment Figure 9 is the attachment Figure 1 of the connection structure schematic diagram of the scraper II, scraper III and the moving frame in

[0037] attachment Figure 10 is the attachment Figure 1 of the structural schematic diagram of the filtering mechanism in

[0038] attachment Figure 11 is the attachment Figure 10 of the enlarged structural schematic diagram of part A in

[0039] attachment Figure 12 is the attachment Figure 1 of the sectional structure schematic diagram of the filtering mechanism in

[0040] attachment Figure 13 is the attachment Figure 1 of the connection structure schematic diagram of the concentration device and the processing tank in

[0041] attachment Figure 14 is the attachment Figure 1 of the structural schematic diagram of the processing tank in

[0042] In the figure: 1. Processing tank; 101. Water inlet; 102. Drain outlet; 103. Sewage outlet; 104. Guide groove I; 2. Separation device; 201. Connecting plate I; 2011. Guide groove II; 202. Connecting plate II; 203. Bottom plate; 204. Connecting plate III; 205. Support plate; 206. Baffle mechanism; 2061. Scraper I; 2062. Baffle plate I; 2063. Baffle plate II; 2064. Slide bar; 2065. Rotating plate; 2066. Gear I; 207. Electric push cylinder I; 2071. Rack I; 208. Collection mechanism; 2081. Support roller; 2082. Conveyor belt; 2083. Screw discharge device; 2084. Screw blade; 2085. Motor I; 3. Loosening mechanism; 301. Electric push cylinder II; 3011. Protection box; 3012. Mounting plate I; 302. Electric push cylinder III; 3021. Rack II; 303. Electric push cylinder IV; 3031. Connecting box I; 3032. Mounting plate II; 304. Stirring rod; 3041. Rotating box; 3042. Sleeve box; 3043. Connecting shaft; 3044. Gear II; 3045. Push plate; 3046. Rack III; 3047. Gear III; 3048. Expansion rod;

[0043] 4. Concentration device; 401. Moving frame; 4011. Support column; 4012. Filter plate; 402. Screw rod I; 4021. Motor II; 403. Guide shaft I; 404. Scraper II; 4041. Screw rod II; 4042. Guide shaft II; 4043. Electric motor I; 405. Scraper III; 4051. Screw rod III; 4052. Guide shaft III; 4053. Electric motor II; 406. Filtration mechanism; 4061. Connecting box II; 4062. Electric push cylinder V; 4063. Sliding box I; 4064. Connecting plate IV; 4065. Wing plate; 4066. Rotating paddle; 4067. Electric push cylinder VI; 4068. Connecting rod; 407. Blocking block; 4071. Elastic sheet; 408. Partition mechanism; 4081. Filter plate I; 4082. Filter plate II; 4083. Sliding box II; 4084. Sliding seat; 4085. Motor III. Specific embodiments

[0044] For the convenience of those skilled in the art to understand, the technical solutions of the present invention will be further specifically described below in combination with the attached Figure 1-14 , drawings.

[0045] Embodiment 1:

[0046] A uranium-containing radioactive wastewater treatment device and its treatment method are as follows:

[0047] 1) Pretreatment: Filter out larger particulate impurities in the uranium-containing radioactive wastewater through a four-stage grille. The pore sizes of the grilles that the uranium-containing radioactive wastewater passes through in sequence are 17 mm, 13 mm, 8 mm, and 3 mm. Subsequently, add a neutralizing agent to the uranium-containing radioactive wastewater. The dosage of the neutralizing agent is 2 L / m 3 , and adjust the pH value of the uranium-containing radioactive wastewater to 8;

[0048] 2) Oxidation treatment: Add 125 mg / L of H2O2 to the uranium-containing radioactive wastewater and react for 45 minutes to break the uranium complex structure;

[0049] 3) Reagent mixing: Add a precipitant and a flocculant to the uranium-containing radioactive wastewater. The precipitant is sodium hydroxide, and the dosage of the flocculant is 1.16 mg / L. Use a stirring device to stir the uranium-containing radioactive wastewater at a speed of 60 rpm for 5 minutes to initially mix the precipitant, flocculant, and uranium-containing radioactive wastewater;

[0050] 4) Separation treatment: Transport the uranium-containing radioactive wastewater treated in step 3) into treatment tank 1 in the uranium-containing radioactive wastewater treatment device through inlet 101, so that the two sets of separation devices 2 quickly separate the uranium-containing precipitates in the wastewater. Subsequently, the uranium-containing radioactive wastewater enters the bottom of treatment tank 1, and the uranium-containing precipitates in the wastewater are concentrated by the concentration device 4. While performing the concentration treatment, the concentration device 4 controls the flow of the wastewater to further mix the uranium-containing radioactive wastewater with the precipitant and flocculant. The supernatant generated after the treatment is discharged from the treatment tank through drain port 102, and the uranium-containing precipitates concentrated by the concentration device 4 are discharged from the treatment tank through sewage discharge port 103, and the water content of the separated sludge is 32%;

[0051] 5) Ion exchange: The supernatant selectively adsorbs residual uranium ions through a chelating resin column, reducing the uranium concentration in the supernatant to 0.035 mg / L before reaching the standard for discharge or reuse; after the chelating resin column is saturated with adsorption, it is eluted with a mixed solution of 7% HCl and 0.25 mol / L NaCl to regenerate and then reused;

[0052] 6) Eluate and sludge treatment: Send the ion exchange eluate to an evaporator, concentrate the volume of the original solution to 1 / 10 of the original through evaporation and concentration, and mix the concentrated product with the uranium-containing precipitates generated in step 4) at a ratio of 1:1 for solidification treatment.

[0053] The uranium-containing radioactive wastewater treatment device described in step 4) includes a treatment tank 1, a separation device 2, a loosening mechanism 3, and a concentration device 4. Two water inlets 101 are provided at the top of the treatment tank 1, a drain outlet 102 and a sewage outlet 103 are provided on one side, and a number of guiding grooves I 104 are respectively provided on a pair of inner walls of the treatment tank 1 corresponding to each other. Two sets of separation devices 2 are provided, which are respectively arranged on both sides of the treatment tank 1, and a number of sets of loosening mechanisms 3 are respectively arranged inside the two separation devices 2. The concentration device 4 is arranged below the treatment tank 1.

[0054] The separation device 2 includes a connecting plate I 201, a connecting plate II 202, a bottom plate 203, a connecting plate III 204, a support plate 205, a baffle mechanism 206, an electric push cylinder I 207, a rack I 2071, and a collection mechanism 208. Both ends of the connecting plate I 201 are fixedly connected to the treatment tank 1. A number of guiding grooves II 2011 are provided on one side of the connecting plate I 201, and a number of support plates 205 with multiple through grooves on one side are fixedly connected in a stepped manner between the connecting plate I 201 and the treatment tank 1. The connecting plate II 202 and the connecting plate III 204 are respectively located on both sides of the number of support plates 205 and are fixedly connected to the connecting plate I 201 and the treatment tank 1, and the bottom of the connecting plate III 204 is fixedly connected to a support plate 205. The bottom plate 203 is fixedly connected between the treatment tank 1, the connecting plate I 201, and the connecting plate II 202. The cylinder body of the electric push cylinder I 207 is fixedly connected to the other side of the connecting plate I 201 through a connecting seat, and the extending end is fixedly connected to the rack I 2071 slidably connected to the connecting plate I 201. The collection mechanism 208 is arranged between the bottom plate 203 and the support plate 205, and a number of baffle mechanisms 206 are respectively arranged in the gaps between the connecting plate II 202 and the number of support plates 205. The uranium-containing radioactive wastewater flows through a number of support plates 205 in sequence through the water inlet 101, and part of the uranium-containing precipitates in the uranium-containing radioactive wastewater are separated through the baffle mechanism 206. After the precipitates between the baffle mechanisms 206 accumulate to a certain amount, the water inlet 101 is closed, and the electric push cylinder I 207 is used to control the rack I 2071 to drive the baffle mechanism 206 to move, so as to open the gap between the support plate 205 and the baffle mechanism 206, so that the precipitates fall onto the collection mechanism 208 from the gap between the support plate 205 and the baffle mechanism 206, and the collection mechanism 208 is controlled to operate to clean the uranium-containing precipitates from the connecting plate II 202 and the bottom plate 203 into the sludge collection equipment. Since two water inlets 101 and two separation devices 2 are provided in the device, when a set of separation device 2 and water inlet 101 cooperate to perform the above cleaning work, the other set of separation device 2 and water inlet 101 can operate normally, so as to ensure that the device can continuously treat the uranium-containing radioactive wastewater.

[0055] The baffle mechanism 206 is provided with a scraper I 2061, a baffle plate I 2062, a baffle plate II 2063, a slide bar 2064, a rotating plate 2065, and a gear I 2066; one side of the rotating plate 2065 is rotatably connected to a support plate 205, the side wall is attached to the side edge of the upper-level support plate 205, and one end of the rotating plate 2065 is fixedly connected to the gear I 2066 meshing below the rack I 2071 through a connecting shaft passing through the through hole on the connecting plate I 201; the scraper I 2061, the baffle plate I 2062, and the baffle plate II 2063 fixedly connected together by the connecting shaft are slidably connected to the upper-level support plate 205, and the connecting seat at the top of the baffle plate II 2063 is rotatably connected to the connecting seat at the top of the rotating plate 2065 through a connecting rod; there are a pair of slide bars 2064, which are respectively fixedly connected to both ends of the scraper I 2061, the baffle plate I 2062, and the baffle plate II 2063, and the pair of slide bars 2064 are respectively slidably connected to the guide groove II 2011 and the guide groove I 104; one side of the rotating plate 2065 in the lowermost baffle mechanism 206 is rotatably connected to the connecting plate II 202, and the rest are the same as other baffle mechanisms 206.

[0056] The collection mechanism 208 is provided with a support roller 2081, a conveyor belt 2082, a spiral discharge device 2083, a spiral blade 2084, and a motor I 2085; the conveyor belt 2082 is arranged outside a plurality of support rollers 2081, and both ends of the support roller 2081 are rotatably connected to the connecting plate I 201 and the processing box 1; the motor I 2085 is fixedly connected to the connecting plate I 201 through a motor base, and the connecting shaft of one support roller 2081 passes through the through hole on the connecting plate I 201 and is fixedly connected to the output end of the motor I 2085; the spiral discharge device 2083 is fixedly connected to the bottom of the connecting plate I 201, the discharge port of the spiral discharge device 2083 is connected to the sludge collection device through a pipeline passing through the connection hole on the processing box 1, and the spiral blade 2084 on the spiral discharge device 2083 passes through the through groove on the connecting plate I 201 and is arranged at one end of the bottom plate 203.

[0057] The baffle treatment of uranium-containing radioactive wastewater can be achieved through the cooperation of baffle I 2062, baffle II 2063 and rotating plate 2065; the electric push cylinder I 207 cooperates with the rack I 2071 to control the gear I 2066 to drive the rotating plate 2065 to rotate away from the upper support plate 205. At the same time, the connecting seat at the top of the rotating plate 2065 pulls the baffle II 2063 through the connecting rod. Under the cooperation of the sliding rod 2064 with the guide groove II 2011 and the guide groove I 104, the baffle II 2063 drives the scraper I 2061 and the baffle I 2062 to slide along the surface of the upper support plate 205, so that the uranium-containing precipitate deposited between the scraper I 2061, the baffle I 2062, the baffle II 2063 and the rotating plate 2065 falls from the gap between the rotating plate 2065 and the upper support plate 205 above the conveyor belt 2082. Subsequently, the electric push cylinder I 207 controls the rack I 2071 to cooperate with the gear I 2066 to drive the rotating plate 2065 to reset, and starts the motor I 2085 to control the conveyor belt 2082 to transport the uranium-containing precipitate to the position where the spiral discharger 2083 is located, so that the spiral discharger 2083 transports the uranium-containing precipitate into the sludge collection equipment.

[0058] The loosening mechanism 3 includes an electric push cylinder II 301, a protective box 3011, a mounting plate I 3012, an electric push cylinder III 302, a rack II 3021, an electric push cylinder IV 303, a connection box I 3031, a mounting plate II 3032, and a stirring rod 304; there are a pair of electric push cylinders II 301, and the cylinders of the pair of electric push cylinders II 301 are respectively arranged inside a pair of protective boxes 3011 fixedly connected to the connecting plate I 201 and the treatment tank 1, and the extending ends pass through the through holes on the protective box 3011 and are fixedly connected to both ends of the mounting plate I 3012; there are a pair of electric push cylinders IV 303, and the cylinders of the pair of electric push cylinders IV 303 are respectively arranged inside a pair of connection boxes I 3031 fixedly connected to both ends of the mounting plate I 3012, and the extending ends pass through the through holes on the connection box I 3031 and are fixedly connected to both ends of the mounting plate II 3032; the cylinder of the electric push cylinder III 302 is fixedly connected to one side of the mounting plate I 3012 through a connecting seat, and the extending end is connected to the rack II 3021 slidably connected to the mounting plate I 3012 through a connecting block; there are several stirring rods 304, which are respectively fixedly connected to the mounting plate I 3012, and the bottom ends of the stirring rods 304 are rotatably connected to the mounting plate II 3032.

[0059] The stirring rod 304 is provided with a rotating box 3041, a sleeve box 3042, a connecting shaft 3043, a gear II 3044, a push plate 3045, a rack III 3046, a gear III 3047, and a telescopic rod 3048; the sleeve box 3042 is fixedly connected to the mounting plate I 3012, and the top of the rotating box 3041 is slidably connected to the through groove on the support plate 205, and the bottom is fixedly connected to the gear II 3044 meshing with one side of the rack II 3021 through a connecting pipe passing through the through hole on the sleeve box 3042; the bottom of the connecting shaft 3043 is rotatably connected to the mounting plate II 3032, and the top passes through the connecting pipe at the bottom of the rotating box 3041 and the through hole on the gear II 3044 and is rotatably connected to the push plate 3045; there are a pair of the racks III 3046, which are diagonally slidably connected inside the rotating box 3041, and the bottom of the rack III 3046 is fixedly connected to the push plate 3045; there are several gears III 3047, which are respectively meshed with one side of the pair of racks III 3046, and one side of the gear III 3047 is rotatably connected to the rotating box 3041 through a connecting seat, and the other side is provided with a threaded rod; there are several telescopic rods 3048, and one end of the telescopic rod 3048 is slidably connected to the through hole on the rotating box 3041, and the other end is threadedly connected to the threaded rod on the gear III 3047.

[0060] The electric push cylinders II 301 operate synchronously to control the mounting plate I 3012 to drive the rotating box 3041 and the sleeve box 3042 to extend upward through the through groove on the support plate 205, so as to initially loosen the uranium-containing precipitate deposited in the baffle mechanism 206. Subsequently, the electric push cylinders IV 303 extend simultaneously, so that the mounting plate II 3032 controls the connecting shaft 3043 to drive the push plate 3045 to push the rack III 3046 upward, thereby controlling the rotation of the gear III 3047, enabling the threaded rod on the gear III 3047 to cooperate with the telescopic rod 3048, and controlling the telescopic rod 3048 to extend out from the through hole on the rotating box 3041; subsequently, the electric push cylinder III 302 controls the cooperation of the rack II 3021 and the gear II 3044 to control the rotating box 3041 to drive the telescopic rod 3048 to rotate, thereby further stirring the uranium-containing precipitate deposited in the baffle mechanism 206 to prevent the uranium-containing precipitate from caking in the baffle mechanism 206 and affecting the subsequent effect of the baffle mechanism 206 on the baffle precipitation of the uranium-containing radioactive wastewater.

[0061] The concentration device 4 includes a moving frame 401, a lead screw I 402, a guide shaft I 403, a scraper II 404, an electric motor I 4043, a scraper III 405, an electric motor II 4053, a filtering mechanism 406, and a partitioning mechanism 408; A pair of support columns 4011 are symmetrically arranged on both sides of the moving frame 401, and a plurality of filter plates 4012 are fixedly connected between the moving frame 401 and the support columns 4011; The lead screw I 402 is threadedly connected to the top of the moving frame 401. One end of the lead screw I 402 is rotatably connected to the processing tank 1, and the other end passes through the through hole on the processing tank 1 and is fixedly connected to the output end of the motor II 4021. The motor II 4021 is fixedly connected to the processing tank 1 through a motor base; The guide shaft I 403 is slidably connected to the top of the moving frame 401, and both ends of the guide shaft I 403 are fixedly connected to the processing tank 1; There are two groups of the scraper II 404, which are respectively slidably connected to both sides of the moving frame 401. One side of the scraper II 404 is slidably connected to the guide shaft II 4042 arranged on the moving frame 401, and the other side is threadedly connected to the lead screw II 4041 rotatably connected to the moving frame 401. The top of the lead screw II 4041 passes through the through hole on the moving frame 401 and is fixedly connected to the sprocket; The electric motor I 4043 is fixedly connected to the inner side of the moving frame 401 through a connecting seat, and the sprocket on the output end of the electric motor I 4043 is connected to the sprocket on the lead screw II 4041 through a chain; There are several scraper III 405, which are respectively arranged on both sides of the two groups of scraper II 404. One side of the scraper III 405 is slidably connected to the guide shaft III 4052 arranged on the moving frame 401, and the other side is threadedly connected to the lead screw III 4051 rotatably connected to the moving frame 401. The top of the lead screw III 4051 passes through the through hole on the moving frame 401 and is fixedly connected to the sprocket; The electric motor II 4053 is fixedly connected to the inner side of the moving frame 401 through a connecting seat, and the sprocket on the output end of the electric motor II 4053 is connected to the sprocket on the lead screw III 4051 through a chain; There are several filtering mechanisms 406, which are respectively located on both sides of the moving frame 401 and fixedly connected to the support columns 4011; The partitioning mechanism 408 is arranged below the moving frame 401 and the filtering mechanism 406.

[0062] The filtering mechanism 406 is provided with a connecting box II 4061, an electric push cylinder V 4062, a sliding box I 4063, a connecting plate IV 4064, wing plates 4065, rotating paddles 4066, an electric push cylinder VI 4067, connecting rods 4068, shielding blocks 407, and elastic pieces 4071; A number of electric push cylinders V 4062 are provided, the cylinder bodies of the electric push cylinders V 4062 are fixedly connected inside the connecting box II 4061, the extending ends are fixedly connected to the sliding box I 4063 slidably connected to one side of the connecting box II 4061, and the other side of the connecting box II 4061 is fixedly connected to the moving frame 401 and the support column 4011; A number of electric push cylinders VI 4067 are provided, the cylinder bodies of the electric push cylinders VI 4067 are fixedly connected to the sliding box I 4063, the extending ends pass through the through holes in the sliding box I 4063 and are fixedly connected to the connecting plate IV 4064, and a number of rotating paddles 4066 are fixedly connected to the wing plates 4065 rotatably connected to both sides of the connecting plate IV 4064 through connecting frames, and a number of filtering holes are provided on the wing plates 4065; A number of shielding blocks 407 are provided, which are respectively rotatably connected to one ends of the connecting grooves on the wing plates 4065, and elastic pieces 4071 are provided on one side of the shielding blocks 407; A number of pairs of connecting rods 4068 are provided, and one ends of a pair of connecting rods 4068 are respectively rotatably connected to both sides of the sliding box I 4063, and the other ends are rotatably connected to the connecting grooves on two wing plates 4065 at the other ends of the shielding blocks 407.

[0063] The partitioning mechanism 408 is provided with a filter plate I 4081, a filter plate II 4082, a sliding box II 4083, a sliding seat 4084, and a motor III 4085; Both ends of the filter plate I 4081 are fixedly connected to the treatment box 1; A pair of filter plates II 4082 are symmetrically arranged on both sides of the filter plate I 4081, and both ends of the filter plates II 4082 are slidably connected to the support plates on the side walls of the treatment box 1 through the sliding seats 4084 and the sliding box II 4083 with a number of teeth inside; Two groups of motors III 4085 are provided, which are respectively fixedly connected to the lower part of the treatment box 1 through motor seats, and the output ends of the motors III 4085 pass through the through holes in the treatment box 1 and are fixedly connected to gears, and the gears on the output ends of the motors III 4085 are meshed with the teeth on the sliding box II 4083.

[0064] After the uranium-containing radioactive wastewater treated by the separation device 2 enters the bottom of the treatment tank 1, the filtering mechanism 406 on one side of the moving frame 401 controls the synchronous operation of the electric push cylinder VI 4067, driving the connecting plate IV 4064 to approach the sliding box I 4063, so that the connecting rod 4068 controls the wing plate 4065 to unfold; subsequently, the electric push cylinder V 4062 runs synchronously, controlling the sliding box I 4063 to drive the connecting plate IV 4064 to approach the connecting box II 4061, so that the top of the wing plate 4065 of the connecting plate IV 4064 fits with the edges of the scraper II 404 and the scraper III 405; subsequently, the external power supply is used to control the rotation of the rotating paddle 4066, continuously introducing the wastewater carrying uranium-containing precipitates between the unfolded wing plate 4065 and the moving frame 401. At this time, the uranium-containing radioactive wastewater passes through the filter plate 4012 and enters the other side of the moving frame 401, and the precipitates carried in the wastewater are filtered out by the filter plate 4012 and precipitate between the unfolded wing plate 4065 and the moving frame 401 under the influence of gravity; after the precipitates between the unfolded wing plate 4065 and the moving frame 401 reach a certain amount, the motor II 4021 cooperates with the lead screw I 402, so that the moving frame 401 drives the unfolded wing plate 4065 to slide along the filter plate I 4081. At this time, the motor III 4085 controls 1 / 2 of the filter plate II 4082 to be received under the filter plate I 4081, so that the wing plate 4065 scrapes the uranium-containing precipitates directly deposited above the filter plate I 4081 and the filter plate II 4082 into the lower part of the filter plate I 4081. After the outer surface of the wing plate 4065 fits with the inner wall of the treatment tank 1, the motor III 4085 controls the filter plate II 4082 to be completely received under the filter plate I 4081. At the same time, the electric motors I 4043 and II 4053 control the lead screws II 4041 and III 4051 to drive the scrapers II 404 and III 405 to descend, scraping the uranium-containing precipitates deposited between the unfolded wing plate 4065 and the moving frame 401 into the lower part of the filter plate I 4081, realizing the concentrated collection of uranium-containing precipitates, and then the motor III 4085 controls the filter plate II 4082 to reset.

[0065] Example 2:

[0066] Differing from Example 1:

[0067] 3) Chemical agent mixing: The dosage of the flocculant is 0.5 mg / L, and the uranium-containing radioactive wastewater is stirred for 5 minutes at a speed of 52 rpm by the stirring device;

[0068] Example 3:

[0069] Differing from Example 1:

[0070] 3) Chemical agent mixing: The dosage of the flocculant is 2.7 mg / L, and the uranium-containing radioactive wastewater is stirred for 10 minutes at a speed of 70 rpm by the stirring device;

[0071] Example 4:

[0072] The difference from Example 1 is:

[0073] 1) Pretreatment: The dosage of the neutralizing agent is 4 L / m 3 , and the pH value of the uranium-containing radioactive wastewater is adjusted to 6.5.

[0074] Comparative Example 1:

[0075] The difference from Example 4 is that the precipitant in step 3) is sodium phosphate.

[0076] Comparative Example 2:

[0077] The difference from Example 1 is:

[0078] 1) Pretreatment: The dosage of the neutralizing agent is 0.5 L / m 3 , and the pH value of the uranium-containing radioactive wastewater is adjusted to 4;

[0079] 3) Agent mixing: The precipitant is sodium sulfide.

[0080] The uranium-containing radioactive wastewater treated by the above comparative examples and examples was detected according to the national standards GB23727-2020 and GB8978-1996, and the detection results are shown in Table 1;

[0081] Table 1 Detection results of each example and comparative example:

[0082]

[0083]

[0084] By analyzing the experimental results of Examples 1-4 and Comparative Examples 1 and 2, it can be seen that the uranium-containing radioactive wastewater can meet the requirements of GB23727-2020 and GB8978-1996 after being treated by the treatment method and device provided by the present invention;

[0085] By comparing the experimental results of Examples 1-3 and Comparative Examples 1 and 2, it can be seen that when sodium phosphate and sodium sulfide are used as precipitants, the treatment effect of the device on uranium-containing radioactive wastewater is better;

[0086] By comparing the experimental results of Example 4 and Comparative Example 1, it can be seen that different precipitants need to be selected in different pH environments to improve the treatment effect of the device on uranium-containing radioactive wastewater.

[0087] In summary, the electronic or electrical components including but not limited to motors, electric push cylinders, electric motors, etc. are components in the prior art, obtained through customization or purchase. The electrical connections between the components are all conventional circuit connections or electrical connections in the prior art, and are not within the scope of protection of the present invention.

[0088] The above content is only an example and explanation of the structure of the present invention. Those skilled in the art of the present technology can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, as long as they do not deviate from the structure of the invention or exceed the scope defined by the claims of the present invention, they should all fall within the scope of protection of the present invention.

Claims

1. A uranium-containing radioactive wastewater treatment device and its treatment method, characterized in that The specific treatment method is as follows: 1) Pretreatment: Filter out larger particulate impurities in the uranium-containing radioactive wastewater through a 4-stage grille, and the pore sizes of the grilles through which the uranium-containing radioactive wastewater passes in sequence are 15 - 20 mm, 10 - 15 mm, 5 - 10 mm, and 1 - 5 mm; subsequently, add neutralizing agent to the uranium-containing radioactive wastewater, and the dosage of the neutralizing agent is 0.5 - 5 L / m 3 , and adjust the pH value of the uranium-containing radioactive wastewater to 6 - 9; 2) Oxidation treatment: Add 50 - 200 mg / L of H2O2 to the uranium-containing radioactive wastewater and react for 30 - 60 min to break the uranium complex structure; 3) Chemical agent mixing: Add the precipitant and flocculant to the uranium-containing radioactive wastewater. The dosage of the flocculant is 0.5 - 2.7 mg / L, and stir the uranium-containing radioactive wastewater for 1 - 10 min at a speed of 52 - 70 rpm through a stirring device to initially mix the precipitant, flocculant with the uranium-containing radioactive wastewater; 4) Separation treatment: Transport the uranium-containing radioactive wastewater treated in step 3) into the treatment tank in the uranium-containing radioactive wastewater treatment device through the water inlet, so that the two sets of separation devices quickly separate the uranium-containing precipitate in the wastewater. Subsequently, the uranium-containing radioactive wastewater enters the bottom of the treatment tank, and the uranium-containing precipitate in the wastewater is concentrated by the concentration device. While performing the concentration treatment, the concentration device controls the flow of the wastewater to further mix the uranium-containing radioactive wastewater with the precipitant and flocculant; After the treatment is completed, the supernatant is discharged from the treatment tank through the drain port, and the uranium-containing precipitate concentrated by the concentration device is discharged from the treatment tank through the sewage discharge port, and the moisture content of the separated sludge is ≤ 65%; 5) Ion exchange: The supernatant selectively adsorbs residual uranium ions through a chelating resin column, so that the uranium concentration in the supernatant is reduced to < 0.05 mg / L and then meets the standard for discharge or reuse; after the chelating resin column is saturated with adsorption, it is eluted with a mixed solution of 5 - 10% HCl and 0.1 - 0.5 mol / L NaCl, and reused after regeneration; 6) Treatment of eluate and sludge: Send the ion exchange eluate to an evaporator, concentrate the volume of the original solution to 1 / 10 - 1 / 20 of the original through evaporation and concentration, and mix the concentrated product with the sludge at a ratio of 1:1 for solidification treatment.

2. The uranium-containing radioactive wastewater treatment device and its treatment method according to claim 1, characterized in that The uranium-containing radioactive wastewater treatment device in step 4) includes a treatment tank, a separation device, a loosening mechanism, and a concentration device; two water inlets are provided at the top of the treatment tank, a drain port and a sewage discharge port are provided on one side, and a number of guide grooves Ⅰ are respectively provided on a pair of inner walls corresponding to the treatment tank; two sets of separation devices are provided, respectively arranged on both sides of the treatment tank, and a number of sets of loosening mechanisms are respectively arranged inside the two sets of separation devices; the concentration device is arranged below the treatment tank; The separation device includes connecting plate I, connecting plate II, bottom plate, connecting plate III, support plate, baffle mechanism, electric push cylinder I, rack I, and collection mechanism; both ends of connecting plate I are fixedly connected to the processing box. On one side of connecting plate I, there are several guide grooves II, and several support plates with multiple through grooves on one side are fixedly connected in a stepped manner between connecting plate I and the processing box; connecting plate II and connecting plate III are respectively located on both sides of several support plates and are fixedly connected to connecting plate I and the processing box, and the bottom of connecting plate III is fixedly connected to one support plate; the bottom plate is fixedly connected between the processing box, connecting plate I, and connecting plate II; the cylinder body of electric push cylinder I is fixedly connected to the other side of connecting plate I through a connecting seat, and the extending end is fixedly connected to rack I slidably connected to connecting plate I; the collection mechanism is arranged between the bottom plate and the support plate, and several baffle mechanisms are respectively arranged in the gaps between connecting plate II and several support plates; The loosening mechanism includes electric push cylinder II, protective box, mounting plate I, electric push cylinder III, rack II, electric push cylinder IV, connecting box I, mounting plate II, and stirring rod; there are a pair of electric push cylinder II, and the cylinder bodies of the pair of electric push cylinder II are respectively arranged inside a pair of protective boxes fixedly connected to connecting plate I and the processing box, and the extending ends pass through the through holes on the protective boxes and are fixedly connected to both ends of mounting plate I; there are a pair of electric push cylinder IV, and the cylinder bodies of the pair of electric push cylinder IV are respectively arranged inside a pair of connecting boxes I fixedly connected to both ends of mounting plate I, and the extending ends pass through the through holes on the connecting boxes I and are fixedly connected to both ends of mounting plate II; the cylinder body of electric push cylinder III is fixedly connected to one side of mounting plate I through a connecting seat, and the extending end is connected to rack II slidably connected to mounting plate I through a connecting block; there are several stirring rods, which are respectively fixedly connected to mounting plate I, and the bottom ends of the stirring rods are rotatably connected to mounting plate II; The concentration device includes a moving frame, a first lead screw, a first guide shaft, a second scraper, a first electric motor, a third scraper, a second electric motor, a filtering mechanism, and a partitioning mechanism; a pair of support columns are symmetrically arranged on both sides of the moving frame, and a plurality of filter plates are fixedly connected between the moving frame and the support columns; the first lead screw is threadedly connected to the top of the moving frame, one end of the first lead screw is rotatably connected to the treatment tank, the other end passes through the through hole on the treatment tank and is fixedly connected to the output end of the second motor, and the second motor is fixedly connected to the treatment tank through a motor base; the first guide shaft is slidably connected to the top of the moving frame, and both ends of the first guide shaft are fixedly connected to the treatment tank; there are two groups of the second scrapers, which are respectively slidably connected to both sides of the moving frame, one side of the second scraper is slidably connected to the second guide shaft arranged on the moving frame, the other side is threadedly connected to the second lead screw rotatably connected to the moving frame, and the top of the second lead screw passes through the through hole on the moving frame and is fixedly connected to a sprocket; the first electric motor is fixedly connected to the inner side of the moving frame through a connecting seat, and the sprocket on the output end of the first electric motor is connected to the sprocket on the second lead screw through a chain; there are several third scrapers, which are respectively arranged on both sides of the two groups of second scrapers, and one side of the third scraper is slidably connected to the third guide shaft arranged on the moving frame, the other side is threadedly connected to the third lead screw rotatably connected to the moving frame, and the top of the third lead screw passes through the through hole on the moving frame and is fixedly connected to a sprocket; the second electric motor is fixedly connected to the inner side of the moving frame through a connecting seat, and the sprocket on the output end of the second electric motor is connected to the sprocket on the third lead screw through a chain; there are several filtering mechanisms, which are respectively located on both sides of the moving frame and fixedly connected to the support columns; the partitioning mechanism is arranged below the moving frame and the filtering mechanism.

3. The uranium-containing radioactive wastewater treatment device and its treatment method according to claim 2, characterized in that The baffle mechanism includes a first scraper, a first baffle plate, a second baffle plate, a sliding rod, a rotating plate, and a first gear; one side of the rotating plate is rotatably connected to a support plate, the side wall is attached to the side edge of the upper-level support plate, and one end of the rotating plate passes through the through hole on the first connecting plate through a connecting shaft and is fixedly connected to the first gear meshing below the first rack; the first scraper, the first baffle plate, and the second baffle plate fixedly connected together through the connecting shaft are slidably connected to the upper-level support plate, and the connecting seat at the top of the second baffle plate is rotatably connected to the connecting seat at the top of the rotating plate through a connecting rod; there are a pair of sliding rods, which are respectively fixedly connected to both ends of the first scraper, the first baffle plate, and the second baffle plate, and the pair of sliding rods are respectively slidably connected to the second guide groove and the first guide groove.

4. The uranium-containing radioactive wastewater treatment device and its treatment method according to claim 2, characterized in that One side of the rotating plate in the lowermost baffle mechanism is rotatably connected to the second connecting plate, and the rest are the same as other baffle mechanisms.

5. The uranium-containing radioactive wastewater treatment device and its treatment method according to claim 2, characterized in that The collection mechanism includes a support roller, a conveyor belt, a spiral discharger, a spiral blade, and a first motor; the conveyor belt is arranged outside several support rollers, and both ends of the support rollers are rotatably connected to the first connecting plate and the treatment tank; the first motor is fixedly connected to the first connecting plate through a motor base, and the connecting shaft of one support roller passes through the through hole on the first connecting plate and is fixedly connected to the output end of the first motor; the spiral discharger is fixedly connected to the bottom of the first connecting plate, the discharge port of the spiral discharger is connected to the sludge collection device through a pipeline passing through the connecting hole on the treatment tank, and the spiral blade on the spiral discharger passes through the through groove on the first connecting plate and is arranged at one end of the bottom plate.

6. The uranium-containing radioactive wastewater treatment device and its treatment method according to claim 2, characterized in that The stirring rod is provided with a rotating box, a sleeve box, a connecting shaft, a gear II, a push plate, a rack III, a gear III, and a telescopic rod; the sleeve box is fixedly connected to the mounting plate I, and the top of the rotating box is slidably connected to the through groove on the support plate, and the bottom is fixedly connected to the gear II meshing with one side of the rack II through a connecting pipe passing through the through hole on the sleeve box; the bottom of the connecting shaft is rotatably connected to the mounting plate II, and the top passes through the connecting pipe at the bottom of the rotating box and the through hole on the gear II and is rotatably connected to the push plate; there are a pair of the rack III, which are diagonally slidably connected inside the rotating box, and the bottom of the rack III is fixedly connected to the push plate; there are several gear III, which are respectively meshed with one side of the pair of rack III, and one side of the gear III is rotatably connected to the rotating box through a connecting seat, and the other side is provided with a threaded rod; there are several telescopic rods, and one end of the telescopic rod is slidably connected to the through hole on the rotating box, and the other end is threadedly connected to the threaded rod on the gear III.

7. A uranium-containing radioactive wastewater treatment device and a treatment method thereof according to claim 2, characterized in that The filtering mechanism is provided with a connecting box II, an electric push cylinder V, a sliding box I, a connecting plate IV, a wing plate, a rotating paddle, an electric push cylinder VI, a connecting rod, a shielding block, and a spring piece; there are several electric push cylinders V, the cylinder body of the electric push cylinder V is fixedly connected inside the connecting box II, and the extending end is fixedly connected to the sliding box I slidably connected to one side of the connecting box II, and the other side of the connecting box II is fixedly connected to the moving frame and the support column; there are several electric push cylinders VI, the cylinder body of the electric push cylinder VI is fixedly connected to the sliding box I, and the extending end passes through the through hole on the sliding box I and is fixedly connected to the connecting plate IV, and several rotating paddles are fixedly connected to the wing plates rotatably connected to both sides of the connecting plate IV through a connecting frame, and there are several filtering holes on the wing plate; there are several shielding blocks, which are respectively rotatably connected to one end of the connecting groove on the wing plate, and there is a spring piece on one side of the shielding block; there are several pairs of connecting rods, and one end of a pair of connecting rods is respectively rotatably connected to both sides of the sliding box I, and the other end is located at the other end of the shielding block and is rotatably connected to the connecting grooves on two wing plates.

8. The uranium-containing radioactive wastewater treatment device and its treatment method according to claim 2, characterized in that The partitioning mechanism is provided with a filter plate I, a filter plate II, a sliding box II, a sliding seat, and a motor III; both ends of the filter plate I are fixedly connected to the treatment box; a pair of filter plates II are symmetrically arranged on both sides of the filter plate I, and both ends of the filter plate II are respectively slidably connected to the support plate on the side wall of the treatment box through a sliding seat and a sliding box II with several teeth inside; there are two groups of the motor III, which are respectively fixedly connected to the lower part of the treatment box through a motor seat, and the output end of the motor III passes through the through hole on the treatment box and is fixedly connected to a gear, and the gear on the output end of the motor III meshes with the teeth on the sliding box II.

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