Uranium-containing wastewater treatment system

Abstract

The utility model discloses a uranium-containing wastewater treatment system which comprises a chemical precipitation system and a spray drying system, in the chemical precipitation system, uranium-containing wastewater enters a reaction tank through a waste liquid storage tank, a reaction liquid is generated after chemical reaction in the reaction tank, and the generated reaction liquid enters a centrifugal machine for centrifugal separation; solid powder separated by the centrifugal machine enters a first automatic racking machine to be collected and sub-packaged, so that uranium in the uranium-containing separated water is recycled by the chemical precipitation system; turbid liquid separated by the centrifugal machine enters a centrifugal water storage tank, the centrifugal water storage tank is connected with a waste liquid preheater, the turbid liquid preheated by the waste liquid preheater enters a spray drying reactor, the spray drying reactor evaporates and separates the turbid liquid, and separated solid powder enters a second automatic racking machine; uranium in the turbid liquid is recycled. Thus, the chemical precipitation system and the spray drying system both recover uranium in the uranium-containing wastewater, the recovery rate of uranium in the uranium-containing wastewater is increased, and the treatment effect of the uranium-containing wastewater is improved.

Description

Technical Field

[0001] This application relates to the field of uranium-containing wastewater treatment technology, and more specifically, to a uranium-containing wastewater treatment system. Background Technology

[0002] Currently, uranium mining generates a large amount of uranium-containing wastewater. Existing methods for treating this wastewater mainly include evaporation and crystallization, ammonium salt precipitation, ion exchange resin methods, inorganic adsorption methods, and high-temperature pyrolysis methods. However, these methods result in low uranium recovery rates, leading to poor overall treatment effectiveness.

[0003] In conclusion, how to improve the uranium recovery rate in uranium-containing wastewater to enhance its treatment effect is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a uranium-containing wastewater treatment system to improve the uranium recovery rate in uranium-containing wastewater, thereby improving the treatment effect of uranium-containing wastewater.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A uranium-containing wastewater treatment system includes a chemical precipitation system and a spray drying system. The chemical precipitation system includes a waste liquid storage tank, a reaction tank, a centrifuge, and a first automatic dispensing machine. The waste liquid storage tank includes a waste liquid inlet and a waste liquid outlet. The waste liquid inlet is used to supply uranium-containing wastewater into the storage tank. The waste liquid outlet is connected to the reaction tank, which is connected to the centrifuge. The centrifuge's discharge port is connected to the first automatic dispensing machine, and the centrifuge's outlet is connected to a centrifuge water storage tank, allowing the suspension separated by the centrifuge to enter the centrifuge water storage tank. The spray drying system includes a waste liquid preheater, a spray drying reactor, and a second automatic dispensing machine. The centrifuge water storage tank is connected to the waste liquid preheater, which is connected to the spray drying reactor, allowing the preheated suspension to enter the spray drying reactor. The spray drying reactor is used to evaporate and separate the suspension, and the spray drying reactor's outlet is connected to the second automatic dispensing machine.

[0007] In some embodiments, the centrifuge further includes an inlet pipe, an internal rotating drum, a storage tank, and a scraper; the inlet pipe is connected to the outlet of the reaction tank, the internal rotating drum is used for centrifugal separation of the reaction liquid formed in the reaction tank, the reaction liquid is centrifuged to form the suspension and solid powder, the suspension enters the storage tank, the outlet of the storage tank is connected to the centrifugal water storage tank; the solid powder can adhere to the inner wall of the internal rotating drum, the scraper is located inside the internal rotating drum, the scraper can scrape off the solid powder, and a discharge port is opened at the lower end of the internal rotating drum, the discharge port is connected to the first automatic dispensing machine.

[0008] In some embodiments, the reaction tank includes an acid inlet, an alkali inlet, and a stirring device; the acid inlet is located at the top of the reaction tank and is used to add an acidic reactant; the alkali inlet is located at the top of the reaction tank and is used to add an alkaline reactant; the stirring device is rotatably connected to the interior of the reaction tank.

[0009] In some embodiments, the acidic reactant is nitric acid;

[0010] And / or, the alkaline reactant is ammonia.

[0011] In some embodiments, the spray drying reactor includes an atomizer and a drying chamber; the atomizer is used to atomize the suspension and deliver the atomized suspension to the drying chamber.

[0012] In some embodiments, the spray drying reactor is connected to an air preheater, which includes an air filter, a heater, and a high-temperature blower connected in sequence. The air filter is used to filter the air, the heater is used to heat the filtered air to form a high-temperature gas, and the high-temperature blower is used to deliver the high-temperature gas to the drying chamber so that the high-temperature gas evaporates and atomizes the suspension.

[0013] In some embodiments, the spray drying system further includes a cyclone separator connected to the spray drying reactor, wherein the aerosol separated from the suspension is conveyed to the cyclone separator, and the cyclone separator is used to separate the gas in the aerosol.

[0014] In some embodiments, the spray drying system further includes a bag filter connected to the outlet of the cyclone separator, wherein the gas separated by the cyclone separator is conveyed to the bag filter for filtering the gas.

[0015] In some embodiments, the system further includes an induced draft fan and a factory exhaust duct, wherein the induced draft fan is connected to the bag filter, the factory exhaust duct is connected to the induced draft fan, and the gas filtered by the bag filter is discharged through the factory exhaust duct under the action of the induced draft fan.

[0016] In some embodiments, a recycling system is also included, which is connected to the spray drying system and the chemical precipitation system, and is used to recover the condensate generated by the spray drying system and transport it back to the waste liquid storage tank.

[0017] The uranium-containing wastewater treatment system provided in this application includes a chemical precipitation system and a spray drying system. In the chemical precipitation system, uranium-containing wastewater enters through the waste liquid inlet of the waste liquid storage tank and enters the reaction tank from the waste liquid outlet. The uranium-containing wastewater undergoes a chemical reaction in the reaction tank to generate a reaction liquid. The reaction tank is connected to a centrifuge, so that the generated reaction liquid enters the centrifuge for centrifugal separation. The solid powder separated by the centrifuge enters the first automatic dispensing machine for collection and dispensing, realizing the recovery of uranium from the uranium-containing wastewater by the chemical precipitation system, reducing the contact between workers and uranium-containing chemicals, and reducing the chemical damage to workers during the working process. The suspension separated by the centrifuge enters the centrifuge water storage tank, which is connected to the waste liquid preheater, so that the suspension enters the spray drying system for further recovery of uranium in the suspension. The suspension, preheated by the waste liquid preheater, enters the spray drying reactor, where the spray drying reactor evaporates and separates the suspension, and the separated solid powder enters the second automatic dispensing machine, realizing the recovery of uranium in the suspension. In this way, both the chemical precipitation system and the spray drying system recover uranium from uranium-containing wastewater, improving the uranium recovery rate and thus enhancing the treatment effect of uranium-containing wastewater. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a uranium-containing wastewater treatment system provided in an embodiment of this application;

[0020] Figure 2 A schematic diagram of the working principle of a centrifuge provided in the embodiments of this application;

[0021] Figure 3 A flow chart of a uranium-containing wastewater treatment process provided in an embodiment of this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] 10-Waste liquid storage tank; 11-Waste liquid inlet; 12-Waste liquid outlet; 20-Reaction tank; 21-Acid inlet; 22-Alkali inlet; 23-Stirring device; 30-Centrifuge; 31-Liquid inlet pipe; 32-Built-in drum; 33-Liquid storage tank; 34-Scraper; 35-Discharge port; 36-Liquid outlet; 41-First automatic dispensing machine; 42-Second automatic dispensing machine; 50-Centrifugal water storage tank; 60-Waste liquid preheater; 70-Spray drying reactor; 71-Air preheater; 80-Cyclone separator; 90-Bag dust collector; 100-Exhaust fan; 110-Plant drainage pipe. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The terminology used in the following embodiments is for the purpose of describing specific embodiments only and is not intended to be a limitation of this application. As used in the specification and appended claims of this application, the singular expressions "a," "an," "the," "the," "the," and "this" are intended to also include expressions such as "one or more," unless the context clearly indicates otherwise. It should also be understood that in the embodiments of this application, "one or more" refers to one, two, or more; "and / or" describes the relationship between related objects, indicating that three relationships may exist; for example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0026] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0027] In this application, "multiple" refers to two or more embodiments. It should be noted that in the description of the embodiments of this application, terms such as "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance, nor as indicating or implying order.

[0028] like Figures 1-3 As shown in the embodiment of this application, the uranium-containing wastewater treatment system includes a chemical precipitation system and a spray drying system, which can sequentially recover uranium from uranium-containing wastewater through the two systems, thereby improving the uranium recovery rate from uranium-containing wastewater.

[0029] like Figure 1 As shown, the chemical precipitation system includes a waste liquid storage tank 10, a reaction tank 20, a centrifuge 30, and a first automatic dispensing machine 41. The waste liquid storage tank 10 includes a waste liquid inlet 11 and a waste liquid outlet 12. The waste liquid inlet 11 is used to allow uranium-containing water to enter the interior of the waste liquid storage tank 10. The waste liquid outlet 12 is connected to the inlet of the reaction tank 20, and the outlet of the reaction tank 20 is connected to the inlet of the centrifuge 30, so that the reaction liquid generated after the reaction in the reaction tank 20 enters the centrifuge 30 and is centrifuged and separated in the centrifuge 30. After centrifugation and separation, a suspension and solid powder are formed. The discharge port 35 of the centrifuge 30 is connected to the first automatic dispensing machine 41, so that the recovered uranium-containing solid powder is collected and dispensed in the first automatic dispensing machine 41. This realizes the recovery of uranium from uranium-containing wastewater by the chemical precipitation system, and reduces the contact between workers and uranium-containing chemicals, thereby reducing the chemical damage to workers during the operation.

[0030] The outlet 36 of centrifuge 30 is connected to centrifugal water storage tank 50, which is connected to a spray drying system. The spray drying system includes a waste liquid preheater 60, a spray drying reactor 70, and a second automatic dispensing machine 42. The outlet of centrifugal water storage tank 50 is connected to the inlet of waste liquid preheater 60, allowing the suspension to enter the spray drying system for further uranium recovery. The outlet of waste liquid preheater 60 is connected to spray drying reactor 70, enabling the reactor to evaporate and separate the preheated suspension. The outlet of spray drying reactor 70 is connected to the second automatic dispensing machine 42, allowing the uranium-containing solid powder separated from the suspension to be collected and dispensed. This further recovers uranium from the suspension through the spray drying system, improving the uranium recovery rate in uranium-containing wastewater and thus enhancing the wastewater treatment effect.

[0031] like Figure 1 As shown, uranium-containing wastewater first undergoes chemical precipitation in reaction tank 20, allowing the uranium in the wastewater to form ammonium diuranate for subsequent recovery. Reaction tank 20 includes an acid inlet 21, an alkali inlet 22, and a stirring device 23. The acid inlet 21 is located at the top of reaction tank 20 and is used to add acidic reactants. The alkali inlet 22 is located at the top of reaction tank 20 and is used to add alkaline reactants. The stirring device 23 agitates the wastewater, improving the reaction efficiency within reaction tank 20.

[0032] In practice, both the acid addition port 21 and the alkali addition port 22 are equipped with control valves and flow meters, and the reaction tank 20 also includes a pH meter. This allows for real-time monitoring and control of the addition of acidic and alkaline reactants, improving the automation of the uranium-containing wastewater treatment system while further reducing the contact between workers and chemicals and enhancing the safety of the work process.

[0033] In some embodiments, since the uranium-containing wastewater itself contains uranium nitric acid and ammonia, in order to ensure the quality of the recovered uranium, the added acidic reactant is nitric acid and the added alkaline reactant is ammonia. In this way, by adding the acid and alkaline reagents that are naturally present in the uranium-containing wastewater, the quality of the recovered uranium is improved, and the effect of uranium-containing wastewater treatment is further improved.

[0034] like Figure 2 As shown (red represents solids, blue represents liquids), the centrifuge 30 also includes an inlet pipe 31, an internal rotating drum 32, a liquid storage tank 33, and a scraper 34. Figure 2As shown in ①, the inlet pipe 31 of the centrifuge 30 is connected to the outlet of the reaction tank 20, and under the action of the auxiliary pump, the reaction liquid generated in the reaction tank 20 enters the interior of the built-in drum 32 through the inlet pipe 31. The built-in drum 32 is used for centrifugal separation of the reaction liquid. In actual practice, the built-in drum 32 can be driven by a motor; Figure 2 As shown in ②, after centrifugation, the reaction solution forms a suspension and a fixed powder; as... Figure 2 As shown in ③, the separated suspension enters the storage tank 33 and is then transported to the centrifugal water storage tank 50 through the outlet 36; as Figure 2 As shown in ④, after the suspension is discharged into the storage tank 33, the solid powder can adhere to the inner wall of the built-in rotating drum 32 under centrifugal force; as Figure 2 As shown in ⑤, after a certain amount of solid powder adheres to the inner wall of the built-in drum 32, the feed port 35 located at the lower end of the built-in drum 32 is opened, and the scraper 34 is operated to scrape off the solid powder from the inner wall of the built-in drum 32; as shown in ⑤, after a certain amount of solid powder adheres to the inner wall of the built-in drum 32, the feed port 35 located at the lower end of the built-in drum 32 is opened, and the scraper 34 is operated to scrape off the solid powder from the inner wall of the built-in drum 32; Figure 2 As shown in ⑥ (the first automatic filling machine 41 is not shown in the figure), the powder scraped off by the scraper 34 is fed through the feed port 35 and enters the first automatic filling machine 41 for collection and filling. After filling, the storage bag can be directly replaced by the operator. In this way, the cooperation between the centrifuge 30 and the first automatic filling machine 41 improves the automation of the uranium-containing wastewater treatment process, reduces the contact between operators and uranium-containing chemicals, reduces the chemical damage to operators during the work process, and improves the safety of the work process.

[0035] It should be noted that the first automatic dispensing machine 41 is an existing device capable of automatically collecting and dispensing powder particles, etc., and can be connected and cooperated with the centrifuge 30 through conventional means, which will not be described in detail here.

[0036] like Figure 1 As shown, the suspension separated by centrifuge 30 enters spray drying reactor 70 through waste liquid preheater 60. The waste liquid preheater 60 first heats the suspension to facilitate subsequent processing. Spray reactor 70 includes an atomizer and a drying chamber. The atomizer can atomize the suspension and transport the atomized suspension to the drying chamber.

[0037] The air inlet of the spray reactor 70 is connected to an air preheater 71, which includes an air filter, a heater, and a high-temperature blower connected in sequence. The air filter filters the air, the heater heats the filtered air to form a high-temperature gas, and the high-temperature blower delivers the high-temperature gas to the drying chamber, so that the atomized suspension can evaporate rapidly in the high-temperature gas flow, causing the suspension to evaporate and separate into aerosol and solid powder. In this way, uranium can be further separated from the suspension, improving the uranium recovery rate in uranium-containing wastewater.

[0038] like Figure 1 As shown, the outlet of the spray reactor 70 is connected to the second automatic dispensing machine 42, so that the solid powder separated by the evaporation of the suspension can fall into the second automatic dispensing machine 42 for collection and dispensing. After dispensing, the staff can directly replace the storage bag. In this way, the automation of the uranium-containing wastewater treatment process is improved by the second automatic dispensing machine 42, the contact between the staff and uranium-containing chemicals is reduced, the chemical damage to the staff during the work process is reduced, and the safety of the work process is improved.

[0039] It should be noted that the second automatic dispensing machine 42 is an existing device capable of automatically collecting and dispensing powder particles, etc., and can be connected and cooperated with the spray reactor 70 through conventional means, which will not be described in detail here.

[0040] Because the aerosol separated from the suspension still contains trace amounts of micro-diameter droplets, it cannot be directly processed, such as... Figure 1 As shown, the spray drying system is also sequentially connected to a cyclone separator 80, a bag filter 90, an induced draft fan 100, and a plant exhaust pipe 110. The inlet of the cyclone separator 80 is connected to the outlet of the spray drying reactor 70, allowing the aerosol separated from the suspension to be separated by the cyclone separator 80, which throws droplets onto the inner wall of the separator, thus separating the gas. The outlet of the cyclone separator 80 is connected to the inlet of the bag filter 90, allowing the separated gas to be filtered by the bag filter 90, ensuring it meets emission requirements. The outlet of the bag filter 90 is connected to the inlet of the induced draft fan 100, which in turn is connected to the plant exhaust pipe 110, allowing the filtered gas to be discharged through the plant exhaust pipe 110 under the action of the induced draft fan 100. This ensures that no secondary solid waste is generated after the uranium-containing wastewater system is treated, thus improving the treatment efficiency of uranium-containing wastewater.

[0041] In some embodiments, when the acid and base reagents are nitric acid and ammonia, condensate is generated in the spray drying system. To recover this condensate, the uranium-containing wastewater treatment system also includes a recovery system. This recovery system connects the spray drying system and the chemical precipitation system, allowing the condensate generated in the spray drying system to be returned to the wastewater storage tank. Since the acid and base reagents are nitric acid and ammonia, which are naturally present in the uranium-containing wastewater, the condensate can be directly returned to the wastewater storage tank without affecting the uranium-containing wastewater there. This allows for a second precipitation process of the condensate. The recovery of the condensate further improves the uranium recovery rate from the uranium-containing wastewater. Furthermore, timely recovery of the condensate ensures the stable operation of the spray drying system and improves the treatment effect of the uranium-containing wastewater.

[0042] In practice, the recovery system includes a liquid injection device, which ensures the recovery and transportation of condensate and improves the efficiency of condensate recovery and treatment.

[0043] like Figure 3 As shown, in the operation of the uranium-containing wastewater treatment system provided in this application embodiment, firstly, the uranium-containing wastewater enters the waste liquid storage tank 10 through a water pump, then the uranium-containing wastewater is transported to the reaction tank 20, and nitric acid (concentration mass fraction 12~40%) is added through the acid addition port 21 to adjust the pH value of the uranium-containing wastewater to 2~3. Then, the uranium-containing wastewater is heated to 40~80℃, and then ammonia water (concentration mass fraction 20~25%) is added through the alkali addition port 22 to adjust the pH value of the uranium-containing wastewater to 9~11. Next, the reaction liquid generated by the reaction is transported to the centrifuge 30 for solid-liquid separation. After separation in the centrifuge 30, the reaction liquid is allowed to stand for 0.5~3 hours. The separated ammonium diuranate solid powder is collected and packaged through the first automatic dispensing machine 41, and the separated suspension is transported to the centrifugal storage tank 50. Then, the suspension is transported to the waste liquid preheater for further treatment. The liquid is preheated to a temperature of 60-98℃. The preheated suspension is then transported to a spray drying reactor 70, where it is atomized into droplets of 18-420μm. Air is heated to 150-600℃ by an air preheater 71 to form high-temperature gas, which is then introduced into the spray drying reactor 70 to ensure sufficient contact and evaporation of the atomized suspension. This process separates the suspension into aerosols and ammonium diuranate solid powder. The ammonium diuranate solid powder is collected and packaged into a powder storage tank by a second automatic dispensing machine 42. The separated aerosols pass through a cyclone separator 80 and a bag filter 90, and are then discharged through a plant exhaust pipe 110 by an induced draft fan 100. This process completes the treatment of uranium-containing wastewater, improving the uranium recovery rate and overall treatment efficiency.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A uranium-containing wastewater treatment system, characterized in that, include: Chemical precipitation system and spray drying system; The chemical precipitation system includes a waste liquid storage tank (10), a reaction tank (20), a centrifuge (30), and a first automatic dispensing machine (41). The waste liquid storage tank (10) includes a waste liquid inlet (11) and a waste liquid outlet (12). The waste liquid inlet (11) is used to supply uranium-containing wastewater into the waste liquid storage tank (10). The waste liquid outlet (12) is connected to the reaction tank (20). The reaction tank (20) is connected to the centrifuge (30). The discharge port (35) of the centrifuge (30) is connected to the first automatic dispensing machine (41). The liquid outlet (36) of the centrifuge (30) is connected to a centrifugal water storage tank (50) so that the suspension separated by the centrifuge (30) enters the centrifugal water storage tank (50). The spray drying system includes a waste liquid preheater (60), a spray drying reactor (70), and a second automatic dispensing machine (42); the centrifugal water storage tank (50) is connected to the waste liquid preheater (60), and the waste liquid preheater (60) is connected to the spray drying reactor (70) so that the suspension preheated by the waste liquid preheater (60) enters the spray drying reactor (70), the spray drying reactor (70) is used to evaporate and separate the suspension, and the outlet of the spray drying reactor (70) is connected to the second automatic dispensing machine (42).

2. The uranium-containing wastewater treatment system according to claim 1, characterized in that, The centrifuge (30) also includes an inlet pipe (31), an internal drum (32), a storage tank (33), and a scraper (34). The inlet pipe (31) is connected to the outlet of the reaction tank (20). The built-in drum (32) is used to centrifuge the reaction liquid formed in the reaction tank (20). After centrifugation, the reaction liquid forms the suspension and solid powder. The suspension enters the storage tank (33). The outlet (36) of the storage tank (33) is connected to the centrifugal water storage tank (50). The solid powder can adhere to the inner wall of the built-in drum (32), the scraper (34) is located inside the built-in drum (32), the scraper (34) can scrape off the solid powder, and the lower end of the built-in drum (32) is provided with the feeding port (35), the feeding port (35) is connected to the first automatic dispensing machine (41).

3. The uranium-containing wastewater treatment system according to claim 1, characterized in that, The reaction tank (20) includes an acid inlet (21), an alkali inlet (22), and a stirring device (23); The acid inlet (21) is located at the top of the reaction tank (20) and is used to add an acidic reagent; the alkali inlet (22) is located at the top of the reaction tank (20) and is used to add an alkaline reagent. The stirring device (23) is rotatably connected to the inside of the reaction tank (20).

4. The uranium-containing wastewater treatment system according to claim 3, characterized in that, The acidic reactant is nitric acid; And / or, the alkaline reactant is ammonia.

5. The uranium-containing wastewater treatment system according to claim 1, characterized in that, The spray drying reactor (70) includes an atomizer and a drying chamber; The atomizer is used to atomize the suspension and deliver the atomized suspension to the drying chamber.

6. The uranium-containing wastewater treatment system according to claim 5, characterized in that, The spray drying reactor (70) is connected to an air preheater (71), which includes an air filter, a heater and a high-temperature blower connected in sequence. The air filter is used to filter the air, the heater is used to heat the filtered air to form high-temperature gas, and the high-temperature blower is used to deliver the high-temperature gas to the drying chamber so that the high-temperature gas evaporates and atomizes the suspension.

7. The uranium-containing wastewater treatment system according to claim 1, characterized in that, The spray drying system also includes a cyclone separator (80) connected to the spray drying reactor (70), and the aerosol separated from the suspension is transported to the cyclone separator (80), which is used to separate the gas in the aerosol.

8. The uranium-containing wastewater treatment system according to claim 7, characterized in that, The spray drying system also includes a bag filter (90), which is connected to the outlet of the cyclone separator (80). The gas separated by the cyclone separator (80) is transported to the bag filter (90), which is used to filter the gas.

9. The uranium-containing wastewater treatment system according to claim 8, characterized in that, It also includes an induced draft fan (100) and a factory exhaust pipe (110). The induced draft fan (100) is connected to the bag filter (90), and the factory exhaust pipe (110) is connected to the induced draft fan (100). The gas filtered by the bag filter (90) can be discharged through the factory exhaust pipe (110) under the action of the induced draft fan (100).

10. The uranium-containing wastewater treatment system according to any one of claims 1-9, characterized in that, It also includes a recycling system, which is connected to the spray drying system and the chemical precipitation system. The recycling system is used to recover the condensate generated by the spray drying system and transport it back to the waste liquid storage tank.

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