Regenerative accumulated nuclide electrodeionization membrane stack test method and system

Abstract

The invention provides a regenerated accumulated nuclide electrodeionization membrane stack test method and system. The test method comprises the following steps: step 1, carrying out nuclide measurement on a to-be-treated EDI membrane stack; 2, a regeneration agent is continuously introduced into the EDI membrane stack to be treated, the radionuclide content in the EDI membrane stack to be treated is monitored in real time till the radionuclide content in the EDI membrane stack to be treated meets the requirement, and then the amount of the introduced regeneration agent and concentration change data of all kinds of nuclides are recorded; and 3, introducing ultrapure water into the to-be-treated EDI membrane stack meeting the preliminary regeneration monitoring requirement for fine regeneration until data acquired by the energy disperse spectroscopy meet the standard, thereby obtaining the regenerated EDI membrane stack. According to the test method for the regenerated accumulated nuclide electrodeionization membrane stack, the regeneration agent and the ultrapure water are sequentially introduced into the to-be-treated EDI membrane stack and monitored, so that the regeneration operation condition of the EDI membrane stack can be monitored in real time, and the content of the regeneration agent can be adjusted according to the test progress.

Description

Technical Field

[0001] The invention relates to the technical field of radioactive waste liquid treatment in nuclear power plants, and in particular to a test method for a regenerative accumulation nuclide electric desalination membrane pile. Background Art

[0002] Electrodeionization membrane reactor (EDI) can be used in nuclear power plants to treat radioactive waste liquid. Compared with the traditional nuclear power ion exchange process, EDI has shown multiple significant advantages, including but not limited to more efficient processing capacity, sustainable regeneration of resin, simpler operation and maintenance, etc. In addition, EDI occupies a smaller area and produces relatively less secondary waste when treating waste liquid.

[0003] In practice, the use of EDI to treat radioactive waste in nuclear power plants will lead to the accumulation of radionuclides on the EDI, although EDI can generate H by electrolyzing water during waste treatment. + and OH - , continuously regenerates itself, but after long-term continuous operation, it will reach a dynamic balance, and some nuclides will accumulate in the EDI, which to a certain extent determines the use time and subsequent disposal of the EDI device. Moreover, since the accumulation of nuclides in the EDI is mainly on the filling resin, it is difficult to disassemble it for cleaning and decontamination, and subsequent disposal is difficult.

[0004] Based on this, the inventors of the present application proposed a test method and system for a regenerative accumulation nuclide electro-desalting membrane reactor in order to solve the above technical problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art that the contaminated EDI membrane stack is difficult to clean and decontaminate and the subsequent disposal is difficult, and to provide a regeneration accumulated nuclide electro-desalting membrane stack test method and system.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] The present invention provides a regenerative accumulation nuclide electro-desalting membrane reactor test method, which is characterized by comprising:

[0008] Step 1, measuring the nuclides of the EDI membrane stack to be treated;

[0009] Step 2, continuously introducing a regeneration agent into the EDI membrane stack to be treated and monitoring the content of radionuclides in the EDI membrane stack to be treated in real time until the content of radionuclides in the EDI membrane stack to be treated meets the requirements, and then recording the amount of the regeneration agent introduced and the concentration change data of various nuclides;

[0010] Step 3: introducing ultrapure water into the EDI membrane stack to be treated that has met the preliminary regeneration monitoring requirements for regeneration until the data collected by the spectrometer meets the standards to obtain a regenerated EDI membrane stack.

[0011] According to one embodiment of the present invention, step 1 further includes:

[0012] A test EDI membrane stack is obtained by using a solution with the same components as those prepared with non-radioactive isotopes and passing it into a new EDI membrane stack to reach equilibrium.

[0013] According to one embodiment of the present invention, after step 2, the method further includes:

[0014] The same amount of the regeneration agent as that introduced into the EDI membrane stack to be treated is introduced into the test EDI membrane stack, and the regenerated test EDI membrane stack is disassembled to confirm whether the element content at each position meets the test standard.

[0015] According to one embodiment of the present invention, after step 3, the method further includes:

[0016] The same amount of ultrapure water as that of the EDI membrane stack to be treated is introduced into the test EDI membrane stack, and the test EDI membrane stack after fine regeneration is disassembled to confirm whether the element content at each position meets the test standard.

[0017] According to one embodiment of the present invention, after the test EDI membrane stack test in step 3 is completed, the data obtained by disassembly analysis is compared and verified with the EDI membrane stack to be processed.

[0018] According to one embodiment of the present invention, the regeneration agent is a 5% NaCl solution.

[0019] According to one embodiment of the present invention, in step 1,

[0020] After measuring the nuclides of the EDI membrane stack to be treated, the types of radionuclides contained in the EDI membrane stack to be treated and the activity concentration of each radionuclides are confirmed and recorded, and then the standards of various radionuclides of the EDI membrane stack after regeneration are determined according to the operation requirements of the power plant.

[0021] According to one embodiment of the present invention, step 3 comprises:

[0022] Step 31, firstly, introduce ultrapure water into the EDI membrane stack to be treated to confirm through the online conductivity meter that the residual regeneration agent in the flow channel has been flushed away;

[0023] Step 32: After rinsing, continue to introduce ultrapure water, open the EDI membrane stack to be treated, and use an energy spectrometer to collect and process data after running for the target time until the reading of the energy spectrometer meets the standard.

[0024] The present invention also provides a regenerative accumulation nuclide electro-desalination membrane reactor test system, which adopts the regenerative accumulation nuclide electro-desalination membrane reactor test method as described above, and the system comprises:

[0025] A regeneration agent delivery flow path and an ultrapure water delivery flow path are connected in parallel, the regeneration agent delivery flow path and the ultrapure water delivery flow path are connected to a test flow path, and a target EDI membrane stack is arranged on the test flow path; wherein,

[0026] The target EDI membrane stack is an EDI membrane stack to be treated or a new EDI membrane stack, and an energy spectrometer is connected to the test flow path.

[0027] According to one embodiment of the present invention, the regeneration agent delivery flow path is provided with a regeneration agent storage tank, a drug feed pump and a first control valve;

[0028] The ultrapure water delivery flow path is provided with an ultrapure water tank, a water inlet pump and a second control valve;

[0029] The first control valve and the second control valve are used to control the test flow path to be connected with the regeneration agent delivery flow path or the ultrapure water delivery flow path.

[0030] According to one embodiment of the present invention, the test flow path is divided into a cleaning flow path and a concentration flow path downstream of the target EDI membrane stack;

[0031] The cleaning flow path returns to the inlet of the target EDI membrane stack, and the concentration flow path is connected to the outside of the target EDI membrane stack; wherein,

[0032] Monitoring points are arranged at the inlet of the target EDI membrane stack and on the cleaning flow path, and the monitoring points are connected to the energy spectrometer.

[0033] According to one embodiment of the present invention, the target EDI membrane stack is equipped with a DC power supply for adjusting the output voltage and current according to the EDI membrane stack requirements and test needs.

[0034] The positive and progressive effects of the present invention are:

[0035] The regeneration accumulation nuclide electro-desalting membrane stack test method of the present invention sequentially introduces a regeneration agent and ultrapure water into the EDI membrane stack to be treated and monitors the same, thereby enabling real-time monitoring of the regeneration operation status of the EDI membrane stack and adjusting the regeneration agent content according to the test progress.

[0036] This test method can obtain a large amount of test data, providing a data basis for studying the performance and operation of EDI membrane stacks.

[0037] The test method can also monitor the regeneration process of a contaminated EDI membrane stack, restore the performance of the EDI membrane stack, or enable the EDI membrane stack to be cleaned and released. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which:

[0039] Figure 1 It is a flow chart of the test method of the regeneration accumulation nuclide electro-desalting membrane reactor of the present invention;

[0040] Figure 2 The present invention is a test flow chart of the EDI membrane stack;

[0041] Figure 3 Schematic diagram of the location of the resin sampling points for the test EDI membrane stack disassembly;

[0042] Figure 4 This is a schematic diagram of the test system of the regenerative accumulation nuclide electro-desalting membrane reactor of the present invention. DETAILED DESCRIPTION

[0043] The present invention is further described below in conjunction with specific embodiments and drawings. More details are elaborated in the following description to facilitate a full understanding of the present invention. However, the present invention can obviously be implemented in a variety of other ways different from the description herein. Those skilled in the art can make similar generalizations and deductions based on actual application situations without violating the connotation of the present invention. Therefore, the protection scope of the present invention should not be limited by the content of this specific embodiment.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0045] Please refer to Figure 1 The present invention proposes a test method for a regenerative accumulation nuclide electro-desalting membrane reactor, comprising:

[0046] Step 1: Perform nuclide measurement on the EDI membrane stack to be treated.

[0047] Before regenerating the EDI membrane stack to be treated, the radionuclide measurement is first performed on the EDI membrane stack to confirm the type of radionuclides contained in the EDI membrane stack with accumulated nuclides and the activity concentration of each radionuclide and record them.

[0048] Then, according to the actual operation requirements of the nuclear power plant, the standards of various radioactive nuclides in the EDI membrane stack after regeneration are determined.

[0049] Step 2: continuously introduce regeneration agent into the EDI membrane stack to be treated and monitor the content of radionuclides in the EDI membrane stack to be treated in real time until the content of radionuclides in the EDI membrane stack to be treated meets the requirements, and then record the amount of regeneration agent introduced and the concentration change data of various nuclides.

[0050] Specifically, a 5% NaCl solution is used as a regeneration agent, and a 5% NaCl solution is introduced into the EDI membrane stack to be treated through a pump. After a certain period of time, an energy spectrometer is used to collect processing data to determine whether the content of each radioactive nuclide in the EDI membrane stack to be treated meets the preliminary regeneration monitoring requirements. If the requirements are not met, continue to introduce 5% NaCl solution; if the requirements are met, then the time, volume, concentration changes of various nuclides, and other data of the NaCl solution introduced at this time are recorded.

[0051] The second step is to obtain the EDI membrane stack after preliminary treatment.

[0052] Step 3: Pass ultrapure water into the EDI membrane stack to be treated that has met the preliminary regeneration monitoring requirements for regeneration until the data collected by the spectrometer meets the standards to obtain a regenerated EDI membrane stack.

[0053] When the EDI membrane stack to be treated meets the initial regeneration monitoring requirements, ultrapure water is continuously introduced into it using a pump, and the online conductivity meter is used to confirm whether the residual NaCl in the flow channel has been flushed away; wherein, the conductivity reading is <1μs / cm.

[0054] After rinsing, continue to introduce ultrapure water and turn on the power of the EDI membrane stack to be treated. First, set the operating current of the EDI membrane stack to be treated to 2.5A. After a certain period of time, use the energy spectrometer to collect and process data to determine whether the various data of the EDI membrane stack meet the requirements.

[0055] If the conditions are met, the operating current of the EDI membrane stack is increased to 5.0A and the operation is continued for a certain period of time until the spectrometer reading meets the standard, thereby obtaining a regenerated EDI membrane stack; if the conditions are not met, ultrapure water is continued to be introduced until the requirements are met.

[0056] The third step is to obtain EDI after refined regeneration treatment.

[0057] It should be noted that when testing the EDI membrane stack to be treated, a test EDI membrane stack was also set up for comparison testing. Specifically:

[0058] Please refer to Figure 2 , a solution with the same components was configured with non-radioactive isotopes and introduced into a new EDI membrane stack to simulate actual operating conditions.

[0059] It can be seen that in actual tests, according to the actual operating conditions of the nuclear power plant, multiple contaminated EDI membrane stacks can be made first, one of which is used as the EDI membrane stack to be treated for testing, and the rest can be used as test EDI membrane stacks. At this time, the types and activity concentrations of nuclides in all EDI membrane stacks are basically the same.

[0060] The test process of the test EDI membrane stack is consistent with the membrane stack to be treated.

[0061] Alternatively, the contents of each component of the EDI waste liquid to be treated can be calculated first and a solution with the same components as the EDI membrane stack to be treated can be prepared, and the prepared solution can be passed into a new EDI membrane stack and reach equilibrium to obtain a test EDI membrane stack.

[0062] Among them, when the EDI membrane stack to be treated meets the preliminary regeneration monitoring requirements and after the fine regeneration treatment, the two test EDI membrane stacks are disassembled respectively, and the element content at each position of the resin after disassembly is determined by energy spectrum measurement, and the relevant data and images are output and recorded.

[0063] When the initial regeneration monitoring requirements have been met Figure 1 After the treatment, the EDI membrane stack node in the fine regeneration treatment corresponds to Figure 1 Node of the EDI membrane stack after fine regeneration treatment.

[0064] After all simulation steps are completed, the regenerated EDI membrane stack is disassembled to confirm whether the element content at each position meets the test standards, and compared with the EDI membrane stack to be treated for verification. After confirming that the relevant indicators are consistent, it can be determined that the repeated test has successfully simulated the actual operating conditions and completed the regeneration.

[0065] Please refer to the resin sampling point after disassembly of EDI membrane stack Figure 3 .

[0066] Specifically, after the EDI membrane stack is disassembled, samples can be taken from the concentrated water chamber and the fresh water chamber near the anode, the concentrated water chamber and the fresh water chamber near the cathode, and the concentrated water chamber and the fresh water chamber in the middle of the EDI membrane stack. Samples are taken at each position near the water inlet, near the water outlet, and in the middle to obtain data, and the relevant distribution curves of each nuclide at each position of the EDI membrane stack are drawn based on this.

[0067] As mentioned above, the regeneration accumulation nuclide electro-desalination membrane stack test method proposed in the present invention can quantitatively and qualitatively provide the solution passed into the EDI membrane stack, flexibly adjust the different concentration regeneration requirements in the contaminated EDI membrane stack according to multiple test results, and measure the regeneration effects of different concentrations and types of regeneration agents.

[0068] Meanwhile, the present invention sets up a test EDI membrane stack, and can obtain the contents of different nuclides at different positions in the EDI membrane stack and the regeneration status of the EDI membrane stack by simulating the disassembly of the test EDI membrane stack.

[0069] The regeneration accumulation nuclide electro-desalting membrane stack test method provided by the present invention can restore the performance of the EDI membrane stack and enable the EDI membrane stack to achieve clean release.

[0070] Please refer to Figure 4 The present invention also proposes a regenerative accumulation nuclide electro-desalination membrane stack test system, which adopts the above regenerative accumulation nuclide electro-desalination membrane stack test method, and the test system includes: a parallel regeneration agent delivery flow path and an ultrapure water delivery flow path, the regeneration agent delivery flow path and the ultrapure water delivery flow path are connected to the test flow path, and the target EDI membrane stack is arranged on the test flow path; wherein the target EDI membrane stack is an EDI membrane stack to be treated or a new EDI membrane stack, and an energy spectrometer is connected to the test flow path.

[0071] Specifically, the regeneration agent delivery flow path is provided with a regeneration agent storage tank 1, a drug feed pump 2 and a first control valve V003A; the ultrapure water delivery flow path is provided with an ultrapure water tank 3, a water feed pump 4 and a second control valve V003B; the first control valve and the second control valve are used to control the connection between the test flow path and the regeneration agent delivery flow path or the ultrapure water delivery flow path.

[0072] Further, the test flow path is divided into a clean flow path and a concentrated flow path downstream of the target EDI membrane stack; the clean flow path returns to the inlet of the target EDI membrane stack, and the concentrated flow path is connected to the outside of the target EDI membrane stack; wherein, monitoring points (5, 6, 7, 8) are arranged at the inlet of the target EDI membrane stack and on the clean flow path, and the monitoring points are connected to the spectrometer. The figure takes 4 monitoring points as an example for illustration, but the specific number is not limited.

[0073] That is, a parallel regeneration agent delivery path and an ultrapure water delivery path are arranged in front of the inlet of the target EDI membrane stack, and the type of solution introduced into the target EDI membrane stack can be switched through the first control valve and the second control valve. In this way, the first control valve and the second control valve can be switched as needed to introduce the solution into the target EDI membrane stack without repeatedly building the test system.

[0074] In summary, a drug inlet pump 2 is provided on the regeneration agent delivery flow path, and a water inlet pump 4 is provided on the ultrapure water delivery flow path, so that the flow rate of the pump can match the flow rate of the EDI membrane stack. At the same time, ensure that the pump head is not less than the total pressure drop of the test loop, and is not greater than the pressure that the target EDI membrane stack can withstand.

[0075] Furthermore, monitoring points are provided at the inlet of the target EDI membrane stack and the clean flow path, so that the concentrations of various nuclides in the target EDI membrane stack can be monitored in real time by an energy spectrometer.

[0076] Among them, after the liquid passes through the target EDI membrane stack, part of the clean flow path flows back to the inlet of the target EDI membrane stack, and part of the concentrated flow path is discharged and collected for subsequent processing.

[0077] The test system is also equipped with an online detection system connected to the spectrometer for online monitoring of the conductivity, temperature, pressure, flow rate of the influent and the conductivity, temperature, pressure and flow rate of the clean stream passing through the contaminated EDI membrane stack.

[0078] In addition, the test flow path is equipped with flow meters, pressure gauges, thermometers and other instruments, and is equipped with a PLC electrical control cabinet. The start and stop of related electrical components and the display, alarm and control of instruments can be achieved through the PLC electrical control cabinet. The PLC electrical control cabinet has a standard communication interface for transmitting signals to the user's main control room.

[0079] In addition, the target EDI membrane stack is equipped with a DC power supply for adjusting the output voltage and current according to the EDI membrane stack requirements and test needs.

[0080] Furthermore, in the test system proposed in the present invention, the EDI membrane stack to be treated can be replaced with a test EDI membrane stack, and the original solution of the regeneration agent can be replaced with a configured simulation solution, while the rest remains unchanged. In this way, the impact of radionuclide contamination on the EDI membrane stack under actual working conditions can be simulated, which is convenient for collecting data for comparison.

[0081] At the same time, the test system is also equipped with safety valves and gate valves in the regeneration agent delivery flow path, ultrapure water delivery flow path and test flow path, which can be inspected and maintained according to actual conditions.

[0082] The regeneration accumulation nuclide electric desalination membrane stack test system of the present invention can obtain the regeneration status of the EDI membrane stack through real-time monitoring of the energy spectrometer at the inlet and outlet of the EDI membrane stack. A feasible test process is provided, which can not only regenerate the contaminated test EDI membrane stack, but also simulate the application of the new EDI membrane stack under actual working conditions.

[0083] Furthermore, non-radioactive nuclide tests and the effects of radioactive nuclides on EDI membrane stack performance can be mutually verified without making too many changes to the test system.

[0084] Furthermore, by regularly, quantitatively and qualitatively analyzing the effects of the regeneration agent, a large amount of test data was obtained, providing a large amount of reference data for subsequent research on the performance and operation of the EDI membrane stack.

[0085] In summary, the regeneration accumulation nuclide electro-desalination membrane stack test system provided by the present invention sets up an energy spectrometer at the water inlet position and the clean flow outlet position of the target EDI membrane stack, monitors the radioactive ion concentration online, introduces regeneration agents or ultrapure water of different types and concentrations to regenerate the EDI membrane stack, and disassembles the EDI membrane stack after reaching equilibrium at different concentrations under a simulated environment. The regeneration effects of regeneration agents of different concentrations and types on EDI membrane stacks with different degrees of contamination can be obtained, which can provide a large amount of reference data for the study of the regeneration properties of the EDI membrane stack.

[0086] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "install", "connect", "connect", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0087] The present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or multiple times in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0088] Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A test method for regenerating and accumulating radionuclides in an electro-desalination membrane reactor, characterized in that: include: Step 1, measuring the nuclides of the EDI membrane stack to be treated; Step 2, continuously introducing a regeneration agent into the EDI membrane stack to be treated and monitoring the content of radionuclides in the EDI membrane stack to be treated in real time until the content of radionuclides in the EDI membrane stack to be treated meets the requirements, and then recording the amount of the regeneration agent introduced and the concentration change data of various nuclides; Step 3: introducing ultrapure water into the EDI membrane stack to be treated that has met the preliminary regeneration monitoring requirements for regeneration until the data collected by the spectrometer meets the standards to obtain a regenerated EDI membrane stack.

2. The regeneration accumulation nuclide electro-desalination membrane reactor test method according to claim 1 is characterized in that: The step 1 further includes: A test EDI membrane stack is obtained by using a solution with the same components as those prepared with non-radioactive isotopes and passing it into a new EDI membrane stack to reach equilibrium.

3. The regeneration accumulation nuclide electro-desalination membrane reactor test method according to claim 2 is characterized in that: After step 2, the method further includes: The same amount of the regeneration agent as that introduced into the EDI membrane stack to be treated is introduced into the test EDI membrane stack, and the regenerated test EDI membrane stack is disassembled to confirm whether the element content at each position meets the test standard.

4. The regeneration accumulation nuclide electro-desalination membrane reactor test method according to claim 2 is characterized in that: After step 3, the method further includes: The same amount of ultrapure water as that of the EDI membrane stack to be treated is introduced into the test EDI membrane stack, and the test EDI membrane stack after fine regeneration is disassembled to confirm whether the element content at each position meets the test standard.

5. The regeneration accumulation nuclide electro-desalination membrane reactor test method according to claim 4 is characterized in that: After the test EDI membrane stack test in step 3 is completed, the data obtained from the disassembly analysis is compared and verified with the EDI membrane stack to be processed.

6. The regeneration accumulation nuclide electro-desalination membrane reactor test method according to claim 1 is characterized in that: The regeneration agent is a 5% NaCl solution.

7. The regeneration accumulation nuclide electro-desalination membrane reactor test method according to claim 1 is characterized in that: In the step 1, After measuring the nuclides of the EDI membrane stack to be treated, the types of radionuclides contained in the EDI membrane stack to be treated and the activity concentration of each radionuclides are confirmed and recorded, and then the standards of various radionuclides of the EDI membrane stack after regeneration are determined according to the operation requirements of the power plant.

8. The regeneration accumulation nuclide electro-desalination membrane reactor test method according to claim 1 is characterized in that: The step 3 comprises: Step 31, firstly, introduce ultrapure water into the EDI membrane stack to be treated to confirm through the online conductivity meter that the residual regeneration agent in the flow channel has been flushed away; Step 32: After rinsing, continue to introduce ultrapure water, open the EDI membrane stack to be treated, and use an energy spectrometer to collect and process data after running for the target time until the reading of the energy spectrometer meets the standard.

9. A regenerative accumulation nuclide electro-desalination membrane reactor test system, characterized in that: The regeneration accumulation nuclide electro-desalination membrane reactor test method according to any one of claims 1 to 8 is adopted, and the system comprises: A regeneration agent delivery flow path and an ultrapure water delivery flow path are connected in parallel, the regeneration agent delivery flow path and the ultrapure water delivery flow path are connected to a test flow path, and a target EDI membrane stack is arranged on the test flow path; wherein, The target EDI membrane stack is an EDI membrane stack to be treated or a new EDI membrane stack, and an energy spectrometer is connected to the test flow path.

10. The regenerative accumulation nuclide electro-desalting membrane reactor test system according to claim 9 is characterized in that: The regeneration agent delivery flow path is provided with a regeneration agent storage tank, a drug feed pump and a first control valve; The ultrapure water delivery flow path is provided with an ultrapure water tank, a water inlet pump and a second control valve; The first control valve and the second control valve are used to control the test flow path to be connected with the regeneration agent delivery flow path or the ultrapure water delivery flow path.

11. The regenerative accumulation nuclide electro-desalting membrane reactor test system according to claim 9, characterized in that: The test flow path is divided into a cleaning flow path and a concentration flow path downstream of the target EDI membrane stack; The cleaning flow path returns to the inlet of the target EDI membrane stack, and the concentration flow path is connected to the outside of the target EDI membrane stack; wherein, Monitoring points are arranged at the inlet of the target EDI membrane stack and on the cleaning flow path, and the monitoring points are connected to the energy spectrometer.

12. The regenerative accumulation nuclide electro-desalting membrane reactor test system according to claim 9, characterized in that: The target EDI membrane stack is equipped with a DC power supply for adjusting the output voltage and current according to the EDI membrane stack requirements and test needs.

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