An electrochemical baffle plate device and method for uranium-containing wastewater treatment and uranium recovery.

Abstract

This invention relates to the fields of water pollution control technology and new energy technology, and discloses an electrochemical baffle device and method for uranium-containing wastewater treatment and uranium recovery. The device includes a reactor housing divided into several compartments by electro-baffles. Each compartment contains a pair of anode and cathode electro-baffles, which are waterproofed and fixed by an electrode slot. The baffles divide the housing into multiple compartments, which are divided into an upper flow compartment and a lower flow compartment. The anode and cathode electro-baffles are connected to an adjustable power supply via wires. This invention uses a single-compartment, dual-electrode electrochemical reaction as the basic unit. Through electrode material modification, electrode configuration design, and electrode arrangement optimization, it efficiently couples the specific adsorption of functionalized electrode materials with the electrochemical in-situ reduction function. Simultaneously, the electrodes are matrix-embedded, also serving a flow-conducting function, achieving efficient removal and resource recovery of uranium ions from wastewater.

Description

Technical Field

[0001] This invention relates to the fields of water pollution control technology and new energy technology, and in particular to an electrochemical baffle plate device and method for uranium-containing wastewater treatment and uranium recovery. Background Technology

[0002] With the continuous growth of global nuclear power generation, the demand for nuclear fuel uranium (U) is also increasing, making uranium mining a globally expanding industry. However, the discharge of large amounts of uranium-containing wastewater during the mining, smelting, and refining processes has caused serious environmental problems. If this wastewater is not properly treated, it will cause severe pollution to the ecological environment, pose a significant threat to public health, and also lead to the waste of valuable uranium resources.

[0003] Current uranium-containing wastewater treatment technologies mainly rely on physical, chemical, and biological methods. Physical adsorption utilizes materials with strong adsorption capacity to enrich and fix uranium ions in uranium-containing wastewater; it is simple to operate, but the adsorbents are expensive, and regeneration costs are high. Membrane treatment technology offers good effluent quality and stable, reliable operation, but this method requires high-quality wastewater, typically necessitating pretreatment of large particles and some high-concentration ions; otherwise, membrane fouling, decreased permeate flux, or even membrane damage may occur. Biological methods, involving the cultivation of specific microorganisms, have stringent environmental requirements and suffer from drawbacks such as large footprint, complex management, and unstable wastewater treatment compliance. Ion exchange methods offer a wide pH range and high selectivity, but suffer from material deactivation, caking, and the generation of large amounts of radioactive waste resin. Chemical precipitation involves adding flocculants to uranium mining wastewater to bind uranium ions with the added chemicals; this method is simple and has low operating costs, but it generates large amounts of uranium-containing waste residue after precipitation, causing secondary pollution. Therefore, there is an urgent need to develop a new, efficient, and low-carbon technology for treating uranium-containing wastewater.

[0004] Electrochemical treatment technology, due to its high efficiency, low energy consumption, and low pollution, has shown broad application prospects in the treatment of uranium-containing wastewater. Hexavalent uranium is more mobile than tetravalent uranium; reducing hexavalent uranium to tetravalent uranium precipitate using appropriate reducing agents is one of the main methods for treating uranium-containing wastewater. The electrochemical method involves introducing current into the electrodes, where a reduction reaction occurs at the cathode, depositing uranium onto the electrode to achieve uranium removal and recovery. Electrochemical methods offer fast processing speeds and are pollution-free. However, in practical applications, this technology still faces bottlenecks such as low ion selectivity, limited electrode adsorption capacity, and unstable processing, which restrict its widespread adoption. Summary of the Invention

[0005] The purpose of this invention is to provide an electrochemical baffle plate device and method for uranium-containing wastewater treatment and uranium recovery. By organically coupling the specific adsorption of amide oxime-modified electrode materials with an electrochemical in-situ reduction process, efficient removal and resource recovery of uranium ions are achieved. Simultaneously, an intelligent control system is integrated, utilizing electrochemical sensing technology, online water quality monitoring, and electrode morphology visualization monitoring technology to ensure that each pair of electrodes is always in optimal working condition. Furthermore, real-time control is achieved through an intelligent management platform to guarantee the optimal operating state of the treatment process.

[0006] To achieve the above objectives, the following technical solution is adopted:

[0007] In a first aspect, an electrochemical baffle device for uranium-containing wastewater treatment and uranium recovery includes a reactor housing, an electro-baffle, and an adjustable power supply;

[0008] The reactor chamber is provided with at least one pair of electric baffles to divide the reactor chamber into multiple interconnected compartments, and each compartment is provided with a sample outlet.

[0009] The electric baffle plate includes a cathode baffle plate and an anode baffle plate. The cathode baffle plate divides the compartment into an upper flow chamber and a lower flow chamber. A modification layer is provided on the cathode baffle plate for the directional adsorption of uranyl ions. A brush roller is provided corresponding to the cathode baffle plate.

[0010] The reactor housing is provided with an inlet and a return outlet at one end and an outlet at the other end. The return outlet is connected to the bottom of the outlet side of the reactor housing through a return pipe.

[0011] The adjustable power supply is electrically connected to the cathode baffle and the anode baffle.

[0012] Preferably, in the above-described electrochemical baffle plate device for uranium-containing wastewater treatment and uranium recovery, the modification layer is an amide oxime layer.

[0013] Preferably, in the above-mentioned electrochemical baffle device for uranium-containing wastewater treatment and uranium recovery, a cathode tank and an anode tank are provided on the inner side wall of the reactor box; wherein, the cathode baffle is movably disposed in the cathode tank, and the anode baffle is movably disposed in the anode tank.

[0014] Preferably, in the above-mentioned electrochemical baffle device for uranium-containing wastewater treatment and uranium recovery, a cathode guide rail is provided inside the reactor box, and multiple cathode baffles are movably assembled on the cathode guide rail. The volume ratio of the upper flow chamber and the lower flow chamber can be adjusted by adjusting the position of the cathode baffles.

[0015] Preferably, in the above-described electrochemical baffle device for uranium-containing wastewater treatment and uranium recovery, the adjustable power supply is located at the top of the reactor housing and is connected to the cathode baffle and anode baffle via wire holes provided on the reactor housing. The adjustable power supply is used to adjust the voltage of each pair of electrodes, and the cathode baffle and anode baffle included in a pair of electrochemical baffles constitute the pair of electrodes.

[0016] Preferably, in the above-mentioned electrochemical baffle device for uranium-containing wastewater treatment and uranium recovery, a current recorder is provided on the circuit formed by each pair of electrodes, the cathode baffle is connected to a potential recorder, and the upper flow chamber is connected to a conductivity meter and a pH meter.

[0017] Preferably, the electrochemical baffle device for uranium-containing wastewater treatment and uranium recovery described above further includes a power flow component. The power flow component is arranged corresponding to the inlet, outlet and return pipeline, and is used to provide power for the inlet, outlet and return, and to collect the inlet flow, outlet flow and return flow. The power flow component includes a peristaltic pump and a flow meter.

[0018] Preferably, the electrochemical baffle plate device for uranium-containing wastewater treatment and uranium recovery described above further includes a thermometer and a control module. The probe of the thermometer is disposed inside the reactor housing. The signal output terminals of the thermometer, flow meter, current recorder, potential recorder, conductivity meter, and pH meter are connected to the signal input terminal of the control module. The signal output terminal of the control module is connected to the signal input terminals of the adjustable power supply and the peristaltic pump. The control module is used for:

[0019] Acquire real-time data and construct a dataset based on the real-time data; wherein, the real-time data includes environmental data, electrochemical information, and uranium removal activity; the environmental data includes temperature, pH, and conductivity, the electrochemical information includes current and voltage, and the uranium removal activity includes removal rate and kinetic k-value;

[0020] The real-time data is cleaned, outliers and noise are removed, and the data is normalized to obtain a normalized dataset.

[0021] Temperature, pH, conductivity, current, voltage, removal rate, and kinetic k-value were used as factors. The correlation between the factors was evaluated using the Pearson correlation coefficient. Principal component analysis was used to reduce the dimensionality of the normalized dataset and extract key features and environmental factors affecting uranium removal as a feature database.

[0022] 80% of the data in the feature database was randomly selected as the training set, and 20% as the test set. A reactor uranium removal prediction model was constructed using a recurrent neural network (LSTM). The model was trained using the training set and evaluated using the test set. The predictive performance of the model was measured by calculating the standard deviation, root mean square error, and R². 2 Analyze the predictive accuracy of the model;

[0023] In each iteration of the reactor uranium removal prediction model, a simplified but accurate machine learning model is ultimately established by learning from historical data and real-time data changes to predict the optimal operating state of the electrodes.

[0024] The operating parameters are determined based on the optimal working state of the electrode, and control commands are issued based on the operating parameters to adjust the working potential of the electrode and the speed of the peristaltic pump so that the electrode operates in the predicted optimal working state.

[0025] Preferably, in the above-mentioned electrochemical baffle device for uranium-containing wastewater treatment and uranium recovery, the anode baffle has a deflection angle range of 30° to 60°, and the end of the deflection angle extends to the bottom of the upper flow chamber.

[0026] In a second aspect, a method for treating uranium-containing wastewater, based on the electrochemical baffle device for uranium-containing wastewater treatment and uranium recovery described in the first aspect, the method comprising:

[0027] Uranium-containing wastewater is pumped into the reactor tank through the inlet. An adjustable power supply is turned on, and operating parameters are set to perform uranium electro-adsorption reduction and recover uranium products deposited on the cathode baffle surface. The operating parameters include:

[0028] The voltage range for each pair of electrodes is set to 1–10V;

[0029] The hydraulic retention time is set to 8–48 hours.

[0030] The reflux ratio is set to 0.5–9.

[0031] The beneficial effects of this invention are:

[0032] 1. Through the organic coupling of uranium-directed adsorption and electrochemical reduction, the electrode integrates the three functions of current conduction, adsorption and reduction, which is low-cost, pollution-free, and suitable for treating various complex water qualities.

[0033] 2. The electrodes are modularly assembled with independent partitions, allowing for easy replacement. Efficient and rapid recovery of uranium products is achieved through physical cleaning and polarity reversal strategies. Furthermore, the electrode modules can operate independently or be integrated into other processes, ensuring high efficiency and compatibility.

[0034] 3. By comprehensively applying multiple types of sensors, the system monitors the operational status in real time. Through big data and data fusion technologies, it deeply analyzes multi-dimensional operational indicators to achieve intelligent equipment control and ensure safe and efficient operation. Attached Figure Description

[0035] Figure 1 An overall structural diagram of an electrochemical baffle device for uranium-containing wastewater treatment and uranium recovery according to an embodiment of the present invention is shown.

[0036] Figure 2 The diagram shows the treatment effect of uranium-containing wastewater treatment electrode without modification according to an embodiment of the present invention.

[0037] Figure 3 A diagram showing the treatment effect of uranium wastewater treated with an amide oxime-modified electrode according to an embodiment of the present invention is illustrated.

[0038] Figure label:

[0039] 1-Reactor housing; 2-Cathode baffle; 3-Cathode tank; 4-Cathode rail; 5-Anode baffle; 6-Anode tank; 102-Upper flow chamber; 103-Lower flow chamber; 7-Peristaltic pump; 8-Flow meter; 9-Inlet; 10-Outlet; 11-Return port; 12-Return pipeline; 13-Adjustable power supply; 14-Current recorder; 15-Potential recorder; 16-Conductivity meter; 17-pH meter; 18-Thermometer; 19-Wire hole; 20-Sampling outlet; 21-Brush roller. Detailed Implementation

[0040] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0041] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0042] Example 1:

[0043] This invention provides an electrochemical baffle device for uranium-containing wastewater treatment and uranium recovery, such as... Figure 1As shown, the electrochemical baffle device for uranium-containing wastewater treatment and uranium recovery includes a reactor housing 1, electrobaffles, and an adjustable power supply 13. At least one pair of electrobaffles are installed inside the reactor housing 1 to divide it into multiple interconnected compartments, each compartment having a sample outlet 20. The electrobaffles include a cathode baffle 2 and an anode baffle 5. The cathode baffle 2 divides the compartment into an upper flow chamber 102 and a lower flow chamber 103. A modification layer is installed on the cathode baffle 2 for the directional adsorption of uranyl ions. A brush roller 21 is installed corresponding to the cathode baffle 2. One end of the reactor housing 1 has an inlet 9 and a reflux outlet 11, and the other end has an outlet 10. The reflux outlet 11 is connected to the bottom of the reactor housing 1 on the outlet side via a reflux pipe 12. The adjustable power supply 13 is electrically connected to the cathode baffle 2 and the anode baffle 5.

[0044] In this embodiment, the adjustable power supply 13 provides a voltage within a set range to a pair of cathode baffles 2 and anode baffles 5. The device uses a single-chamber, dual-electrode electrochemical reaction as its basic unit. Through electrode material modification, electrode configuration design, and optimized electrode arrangement, it efficiently couples the specific adsorption of functionalized electrode materials with the in-situ electrochemical reduction function. Simultaneously, the electrodes are matrix-embedded, also serving a flow-guiding function (optimizing hydraulic flow and mass transfer), achieving efficient removal and resource recovery of uranium ions from wastewater. This device is used for uranium-containing wastewater treatment, requiring no ion exchange resin materials or oxide inhibitors, and requires no inert gas atmosphere protection, operating in an ambient air atmosphere at normal pressure and temperature. Through the flow-guiding effect of the electrodes, uranium-containing wastewater flows sequentially through the basic reaction unit, reducing hexavalent uranyl ions in the uranium ore wastewater to low-toxicity, almost water-insoluble tetravalent uranium, which is then enriched on the cathode. The elemental gradient in the wastewater decreases, the electrodes can be easily replaced, and uranium can be efficiently recovered through polarity reversal. Uranium product collection is convenient and easy, without affecting the continuous operation of the system.

[0045] For example, the cathode baffle 2 can be made of noble metal, transition metal-based, carbon-based, or alloy materials, and the modification layer (optional or absent) can be a material with directional adsorption capacity for uranyl ions, represented by amide oxime. The anode baffle 5 can be made of noble metal, transition metal-based, metal oxide, alloy, or carbon-based materials with good corrosion resistance and high oxidation potential.

[0046] In some embodiments, a cathode groove 3 and an anode groove 6 are provided on the inner side wall of the reactor housing 1; wherein, a cathode baffle 2 is movably disposed in the cathode groove 3, and an anode baffle 5 is movably disposed in the anode groove 6. The cathode groove 3 and the anode groove 6 serve to fix the cathode baffle 2 and the anode baffle 5.

[0047] In a further embodiment, a cathode guide rail 4 is provided inside the reactor housing 1, and multiple cathode baffles 2 are movably mounted on the cathode guide rail 4. The volume ratio of the upper flow chamber 102 and the lower flow chamber 103 can be adjusted by adjusting the position of the cathode baffles 2. When the cathode guide rail 4 is provided, the cathode groove 3 can limit the movement stroke of the cathode baffles 2. The cathode guide rail 4 has a built-in fixing function. For example, when the cathode baffles 2 are movably mounted on the cathode guide rail 4 by a slider, a slider nut is provided corresponding to the slider. Loosening the slider nut can adjust the position of the cathode baffles 2. After adjusting to the target position, the slider nut is locked to fix the cathode baffles 2 at the target position.

[0048] In some embodiments, the adjustable power supply 13 is disposed on the top of the reactor housing 1 and is connected to the cathode baffle 2 and the anode baffle line 5 through the wire hole 19 provided on the reactor housing 1. The adjustable power supply 13 is used to adjust the voltage of each pair of electrodes. The cathode baffle 2 and the anode baffle 5 included in the pair of electrodes form a pair of electrodes.

[0049] It should be noted that the above-described location of the adjustable power supply 13 is merely an example and does not constitute a limitation on the present invention. In other embodiments, the adjustable power supply 13 may be located in other reasonable locations.

[0050] In some embodiments, a power flow component is installed corresponding to the inlet, outlet and return pipeline. The power flow component is used to provide power for the inlet, outlet and return and to collect the inlet flow, outlet flow and return flow. The power flow component includes a peristaltic pump 7 and a flow meter 8.

[0051] The electrochemical baffle plate device for uranium-containing wastewater treatment and uranium recovery also includes a data acquisition module, a control module, and an execution module. The data acquisition module includes a flow meter 8, a current recorder 14, a potential recorder 15, a conductivity meter 16, a pH meter 17, and a thermometer 18. The execution module includes an adjustable power supply 13 and a peristaltic pump 7. The control module utilizes existing equipment capable of receiving, processing, and feeding back data, such as a processor.

[0052] A current recorder 15 is installed on the circuit formed by each pair of electrodes. The cathode baffle 2 is connected to the potential recorder 15, and the upper flow chamber 102 is connected to the conductivity meter 16 and the pH meter 17. The probe of the thermometer 18 is installed inside the reactor body 1. The signal output terminals of the flow meter 8, current recorder 14, potential recorder 15, conductivity meter 16, pH meter 17, and thermometer 18 are connected to the signal input terminal of the control module. The signal output terminal of the control module is connected to the signal input terminal of the adjustable power supply 13 and the peristaltic pump 7. The control module is used to analyze and process the corresponding data collected by the flow meter 8, current recorder 14, potential recorder 15, conductivity meter 16, pH meter 17, and thermometer 18, adjust the operating parameters, and control the adjustable power supply 13 and the peristaltic pump 8 based on the adjusted operating parameters to optimize the wastewater treatment effect.

[0053] Specifically, this control module is used to acquire real-time data and construct a dataset based on the real-time data. The real-time data includes environmental data, electrochemical information, and uranium removal activity. The environmental data includes temperature, pH, and conductivity; the electrochemical information includes current and voltage; and the uranium removal activity includes removal rate and kinetic k-value. It should be noted that the environmental data, electrochemical information, and uranium removal activity can be obtained directly through the data acquisition module, or simply processed using methods known in the art based on the information acquired by the data acquisition module. For example, the removal rate can be calculated based on the inlet and outlet flow rate data, and the kinetic k-value is a parameter describing the relationship between the reaction rate and the reactant concentration. The real-time data was cleaned, outliers and noise were removed, and the data was normalized to obtain a normalized dataset. The Pearson correlation coefficient was used to assess the correlation between factors, and principal component analysis was used to reduce the dimensionality of the normalized dataset, extracting key features and environmental factors affecting uranium removal as a feature database. 80% of the data in the feature database was randomly selected as the training set, and 20% as the test set. A reactor uranium removal prediction model was constructed using a recurrent neural network (LSTM). The model was trained using the training set, and its predictive performance was evaluated using the test set. The standard deviation, root mean square error, and R-squared value were calculated. 2 The predictive accuracy of the analysis model is assessed. In each iteration of the reactor uranium removal prediction model, a simplified yet accurate machine learning model is established by learning from historical and real-time data changes to predict the optimal operating state of the electrodes. Based on this optimal operating state, operating parameters are determined, and control commands are issued to adjust the electrode's operating potential and peristaltic pump speed to ensure the electrodes operate at the predicted optimal state, thereby optimizing treatment efficiency, reducing energy consumption, and ensuring the continuity and stability of wastewater treatment.

[0054] In some embodiments, the anode baffle 5 has a deflection angle ranging from 30° to 60°, with the end of the deflection angle extending to the bottom of the upper flow chamber, thereby improving the flow guiding effect.

[0055] Example 2:

[0056] This invention provides an electrochemical baffle device for uranium-containing wastewater treatment and uranium recovery, such as... Figure 1 As shown, the electrochemical baffle device for uranium-containing wastewater treatment and uranium recovery includes a reactor housing 1, an adjustable power supply 13, and electro-baffles. The reactor housing 1 has five compartments, each containing a cathode baffle 2 and an anode baffle 5. The cathode baffle 2 divides the compartment into an upper flow chamber 102 and a lower flow chamber 103, and the volume ratio of the upper and lower flow chambers can be set via a sliding guide rail 4 at the bottom of the cathode tank 3. One end of the reactor housing 1 has an inlet 9 and a return outlet 11, and the other end has an outlet 10. The return outlet 11 is connected to the bottom of the reactor housing 1 at the outlet side via a return pipe 12. Both the inlet 9 and the return outlet 11 are connected to a peristaltic pump 7 and a flow meter 8. The adjustable power supply 13 is installed on the top of the reactor housing 1 and is connected to the cathode baffle 2, the anode baffle 5, a current recorder 14, and a potential recorder 15 via a wire hole 19. In addition, each upflow chamber 102 is equipped with a conductivity meter 16 and a pH meter 17, and a thermometer 18 is installed on the right side of the reactor body 1. Brush rollers 21 are installed on both sides of the cathode tank 3.

[0057] It should be noted that the difference between the device provided in Example 2 and Example 1 is that in Example 2, the dimensions of the device and the dimensions, materials and preparation methods of the core components are specifically given.

[0058] The reactor's external dimensions are: length × width × height = 44cm × 16cm × 19cm.

[0059] In this embodiment, a 0.5mm thick titanium plate is used as the substrate material for the electric baffle. The cathode titanium sheet (i.e., cathode baffle 2) has dimensions of 13.5cm × 13.8cm (length × width), and the anode titanium sheet (i.e., anode baffle 5) has dimensions of 15.8cm × 14.8cm (length × width). The bending length is 2.8cm, and the bending angle is 45°. Before use, the titanium sheets are washed with isopropanol, acetone, 2% nitric acid, and ultrapure water for 20 minutes respectively to remove surface stains, and then dried at 60°C for later use. The steps for modifying the titanium sheet with amide oxime (i.e., cathode baffle 2 with the modified layer) are as follows: polyacrylonitrile, carbon black, and N,N-dimethylformamide are mixed in a mass ratio of 1:1:30 and stirred to form a uniform slurry. Titanium sheets were dipped in the slurry and air-dried on a hot plate at 70°C. Then, 80 mg / ml hydroxylamine hydrochloride and 60 mg / ml sodium carbonate were added to 25 ml of water and kept in a water bath at 70°C for 90 min. The sheets were then washed with deionized water and dried in a vacuum oven at 80°C.

[0060] Example 3:

[0061] This invention provides a method for treating uranium-containing wastewater, based on an electrochemical baffle device for uranium-containing wastewater treatment and uranium recovery provided in Example 2. The experimental HRT is set to 24h, a gradient voltage is supplied, and the voltages of the five pairs of electrodes from the inlet to the outlet are 3.5V, 3.5V, 4.0V, 4.0V, and 4.5V respectively. The volume ratio of the upper flow chamber to the lower flow chamber is 3:1.

[0062] Figure 2 The changes in uranium concentration and removal rate in the reactor's compartments 1-5 and the effluent compared to the influent are shown. The uranium concentration in the effluent is stable at around 4.0 mg / L, and the uranium removal rate is stable at 47%. The removed uranium is enriched in the cathode, and the energy consumption is 126 kWh / kgU.

[0063] After the electrode reaches its processing limit, the brush roller 21 moves up and down to rotate and clean the uranium-containing deposits on the cathode surface. Then, a sulfuric acid solution with pH=3 is injected into the reactor, and the power electrode is reversed. The uranium that was not cleaned properly and the uranium that was washed off dissolves back into the solution. The uranium-enriched solution is recovered through the bottom outlet 20, thus achieving electrode cleaning and uranium resource recovery.

[0064] This invention can be applied to the treatment of uranium-containing wastewater and the treatment of heavy metal ion wastewater in industries such as mining, electroplating, electronics, metallurgy, battery production, metal surface treatment, printed circuit board manufacturing, precious metal processing, and automobile manufacturing.

[0065] The above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also fall within the scope of the present invention, and the patent protection scope of the present invention should be defined by the claims.

Claims

1. An electrochemical baffle plate device for uranium-containing wastewater treatment and uranium recovery, characterized in that, Includes reactor housing, electro-baffles, and adjustable power supply; The reactor chamber is provided with at least one pair of electric baffles to divide the reactor chamber into multiple interconnected compartments, and each compartment is provided with a sample outlet. The electric baffle plate includes a cathode baffle plate and an anode baffle plate. The cathode baffle plate divides the compartment into an upper flow chamber and a lower flow chamber. A modification layer is provided on the cathode baffle plate for the directional adsorption of uranyl ions. A brush roller is provided corresponding to the cathode baffle plate. The reactor housing is provided with an inlet and a return outlet at one end and an outlet at the other end. The return outlet is connected to the bottom of the outlet side of the reactor housing through a return pipe. The adjustable power supply is electrically connected to the cathode baffle and the anode baffle; A current recorder is installed on the circuit formed by each pair of electrodes, the cathode baffle is connected to a potential recorder, and the upper flow chamber is connected to a conductivity meter and a pH meter. It also includes a power flow component, which is installed corresponding to the inlet, outlet and return pipeline, and is used to provide power for the inlet, outlet and return respectively and to collect the inlet flow, outlet flow and return flow. The power flow component includes a peristaltic pump and a flow meter. It also includes a thermometer and a control module. The probe of the thermometer is located inside the reactor chamber. The signal output terminals of the thermometer, flow meter, current recorder, potential recorder, conductivity meter, and pH meter are connected to the signal input terminal of the control module. The signal output terminal of the control module is connected to the signal input terminals of the adjustable power supply and the peristaltic pump. The control module is used for: Acquire real-time data and construct a dataset based on the real-time data; wherein, the real-time data includes environmental data, electrochemical information, and uranium removal activity; the environmental data includes temperature, pH, and conductivity, the electrochemical information includes current and voltage, and the uranium removal activity includes removal rate and kinetic k-value; The real-time data is cleaned, outliers and noise are removed, and the data is normalized to obtain a normalized dataset. Temperature, pH, conductivity, current, voltage, removal rate, and kinetic k-value were used as factors. The correlation between the factors was evaluated using the Pearson correlation coefficient. Principal component analysis was used to reduce the dimensionality of the normalized dataset and extract key features and environmental factors affecting uranium removal as a feature database. 80% of the data in the feature database was randomly selected as the training set, and 20% as the test set. A recurrent neural network was used to construct a reactor uranium removal prediction model. The model was trained using the training set, and its predictive performance was evaluated using the test set. The performance was assessed by calculating the standard deviation, root mean square error, and R². 2 Analyze the predictive accuracy of the model; In each iteration of the reactor uranium removal prediction model, a simplified but accurate machine learning model is ultimately established by learning from historical data and real-time data changes to predict the optimal operating state of the electrodes. The operating parameters are determined based on the optimal working state of the electrode, and control commands are issued based on the operating parameters to adjust the working potential of the electrode and the speed of the peristaltic pump so that the electrode operates in the predicted optimal working state.

2. The electrochemical baffle plate device for uranium-containing wastewater treatment and uranium recovery as described in claim 1, characterized in that, The modified layer is an amide oxime layer.

3. The electrochemical baffle plate device for uranium-containing wastewater treatment and uranium recovery as described in claim 1, characterized in that, The reactor housing has a cathode tank and an anode tank on its inner side wall; wherein, the cathode baffle is movably disposed in the cathode tank and the anode baffle is movably disposed in the anode tank.

4. The electrochemical baffle device for uranium-containing wastewater treatment and uranium recovery as described in claim 3, characterized in that, The reactor housing is equipped with a cathode guide rail, and multiple cathode baffles are movably mounted on the cathode guide rail. The volume ratio of the upper flow chamber and the lower flow chamber can be adjusted by adjusting the position of the cathode baffles.

5. The electrochemical baffle device for uranium-containing wastewater treatment and uranium recovery as described in claim 4, characterized in that, The adjustable power supply is located at the top of the reactor housing and is connected to the cathode baffle and anode baffle via wire holes on the reactor housing. The adjustable power supply is used to adjust the voltage of each pair of electrodes. The cathode baffle and anode baffle included in a pair of electrodes constitute the pair of electrodes.

6. The electrochemical baffle plate device for uranium-containing wastewater treatment and uranium recovery as described in claim 1, characterized in that, The anode baffle plate has a deflection angle range of 30° to 60°, and the end of the deflection angle extends to the bottom of the upper flow chamber.

7. A method for treating uranium-containing wastewater, based on the electrochemical baffle device for uranium-containing wastewater treatment and uranium recovery as described in any one of claims 1 to 6, characterized in that, The method includes: Uranium-containing wastewater is pumped into the reactor tank through the inlet. An adjustable power supply is turned on, and operating parameters are set to perform uranium electro-adsorption reduction and recover uranium products deposited on the cathode baffle surface. The operating parameters include: The voltage range for each pair of electrodes is set to 1~10V; The hydraulic retention time is set to 8~48h; Set the reflux ratio to 0.5~9.

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