Waste liquid treatment device for automatic separation of radionuclides

Abstract

The invention relates to a waste liquid treatment device for automatically separating radionuclides. The waste liquid treatment device comprises a first waste liquid collection passage and a second waste liquid collection passage, an upstream liquid supply channel shared by the two channels comprises an injection pump and a multi-way valve, and the injection pump inputs liquid into the multi-way valve. The first waste liquid collecting channel directly guides cleaning liquid, replacement liquid and the like which do not need to be reserved into a waste liquid barrel through a first output port of the multi-way valve. The second waste liquid collecting channel is sequentially connected with a plurality of resin columns, a waste liquid tank, a peristaltic pump and a waste liquid barrel through a second output port of the multi-way valve, waste liquid generated by the resin columns firstly enters the waste liquid tank for temporary storage, and when the liquid level of the waste liquid tank reaches a preset threshold value, the peristaltic pump automatically pumps and discharges the waste liquid into the waste liquid barrel for centralized collection. The device can distinguish reserved liquid from waste liquid according to steps, realizes automatic flow division, temporary storage and discharge of the waste liquid, avoids manual pouring of the waste liquid halfway, ensures continuous operation of a long-time and multi-channel separation process, and reduces the risk of personnel exposure in a radioactive waste liquid treatment process.

Description

Technical Field

[0001] This invention relates to the field of automated separation and waste liquid management of radionuclides, and in particular to a waste liquid treatment device for automated separation of radionuclides. Background Technology

[0002] The separation and determination of radionuclides are crucial steps in environmental monitoring, effluent monitoring, and other fields. Quantitative analysis of radionuclides in environmental media (such as water samples, soil, and aerosols) typically requires parallel and batch radiochemical separation of a large number of samples. With the increasing number of monitoring tasks and the fact that some samples have high radioactivity, traditional manual separation methods have gradually become insufficient in terms of efficiency, stability, and personnel radiation protection. Consequently, fully automated radionuclide separators have emerged to automate the separation process, especially fully automated multi-channel radionuclide separators with multi-channel parallel processing capabilities.

[0003] In fully automated multichannel radionuclide separation processes, in addition to collecting the target eluent and retaining effective analytical components, a large amount of washing fluid, displacement fluid, and rinsing residue that no longer need to be separately stored are generated during resin column pretreatment, rinsing, displacement, and elution steps. These liquids can all be considered waste liquids. Timely, safe, and reliable transfer and centralized collection of waste liquids are crucial conditions for ensuring the continuous operation of the instrument. Currently, there are three main methods for waste liquid treatment: The first method is for the operator to manually pour the waste liquid from the collection rack into an external waste liquid recovery tank during the experiment; the second method is to increase the overall size of the instrument to obtain a larger collection rack volume, thereby allowing the collection rack to hold more waste liquid within a certain period of time; the third method is to manually limit the maximum amount of waste liquid allowed to be generated in a single experimental procedure, and interrupt the procedure and complete the entire experiment in batches once the limit is reached. All of the above methods have obvious limitations: manual dumping increases the frequency of operator involvement in the experiment, raising the risk of personnel exposure to radioactive waste liquid; relying on increasing the size of the instrument sacrifices the compactness and deployability of the equipment, and does not fundamentally solve the problem of continuous waste discharge; limiting the amount of waste liquid that can be generated in a single experiment forces the experiment to be split into multiple batches, resulting in discontinuous processes, reduced overall efficiency, and is not conducive to the automated processing of large batches of samples.

[0004] The types and models of fully automated radionuclide separators currently available in China are still relatively few, and the related technological system is not yet mature, particularly in the management of waste liquid during multi-channel parallel operation, where common challenges exist. Specifically, multi-channel separation means that multiple resin columns will simultaneously output large amounts of washing waste liquid; most of this waste liquid has no analytical value and should be directly identified as waste liquid to be discharged rather than being retained tube by tube. However, due to the limited size of the instrument itself, the collection rack inside the instrument has a limited volume for receiving the effluent from each channel, and it needs to simultaneously perform two functions: "segmented collection of valuable eluent" and "temporary storage of valueless waste liquid." If the waste liquid is not emptied in time, the collection rack will become saturated before the experiment is over, forcing operators to repeatedly transfer the waste liquid from the collection rack to a large waste liquid tank outside the instrument during the experiment to restore the remaining capacity of the collection rack and allow the device to continue operating. This reliance on manual transfer not only affects the continuity of the process but also causes the "fully automated" state to be interrupted by human intervention.

[0005] In view of the above problems, this invention is proposed. Summary of the Invention

[0006] This invention discloses a waste liquid treatment device for automatic separation of radionuclides, which aims to solve the technical problems existing in the prior art.

[0007] To achieve the above objectives, according to the present invention, a waste liquid treatment device for automatic separation of radionuclides is provided, comprising a first waste liquid collection passage and a second waste liquid collection passage, wherein the first waste liquid collection passage and the second waste liquid collection passage share an upstream liquid supply passage, the upstream liquid supply passage comprising an injection pump and a multi-way valve, wherein the injection pump inputs waste liquid into the multi-way valve. The first waste liquid collection channel also includes a waste liquid tank. The first output port of the multi-way valve is connected to the waste liquid tank. The waste liquid input to the multi-way valve is output through the first output port and then enters the waste liquid tank. The second waste liquid collection channel includes multiple resin columns, a waste liquid tank, a peristaltic pump, and a waste liquid container. The second output port of the multi-way valve is connected to the resin columns, the waste liquid tank, the peristaltic pump, and the waste liquid container in sequence. The waste liquid input to the multi-way valve is processed by the resin columns through the second output port and then enters the waste liquid tank for temporary storage. When the liquid level in the waste liquid tank reaches the preset liquid level threshold, it is pumped to the waste liquid container by the peristaltic pump for centralized collection, thereby realizing the automatic transfer and discharge of the waste liquid generated by the resin columns.

[0008] As a preferred technical solution, the upstream liquid supply passage also includes a buffer tube, which is installed between the injection pump and the multi-way valve.

[0009] As a preferred technical solution, the injection pump is connected to the input end of the buffer tube through a first pipeline, and the output end of the buffer tube is connected to the input end of the multi-way valve through a second pipeline.

[0010] As a preferred technical solution, a collection rack is also included, which carries multiple collection pipes and waste liquid tanks.

[0011] As a preferred technical solution, the liquid flowing out from the lower end of the resin column is divided into effective effluent and waste liquid. When the effluent is effective effluent, the resin column is set to correspond to multiple collection pipes, and the effective effluent enters multiple collection pipes through the lower end of the resin column. When the effluent is waste liquid, the resin column is matched with a waste liquid tank, and the waste liquid is temporarily stored in the waste liquid tank.

[0012] As a preferred technical solution, a liquid level sensor is installed in the waste liquid tank, and a preset liquid level warning height is provided.

[0013] As a preferred technical solution, the waste liquid tank and the peristaltic pump are connected through the fifth pipeline, and the peristaltic pump and the waste liquid tank are connected through the sixth pipeline. The peristaltic pump draws the waste liquid from the waste liquid tank through the fifth pipeline and transports it to the waste liquid tank through the sixth pipeline.

[0014] As a preferred technical solution, the peristaltic pump is configured to stop operating when the liquid level in the waste liquid tank drops below a preset liquid level threshold after the waste liquid is extracted.

[0015] As a preferred technical solution, the second output port of the multi-way valve is connected to the resin column through a fourth pipeline, and the number of the fourth pipelines is the same as the number of resin columns.

[0016] As a preferred technical solution, the peristaltic pump is externally connected to a drive module. When the liquid level in the waste tank reaches a preset liquid level threshold, the drive module drives the peristaltic pump to pump out the waste liquid.

[0017] The technical solution adopted in this invention can achieve at least one of the following beneficial effects: 1. This invention achieves separate management of waste liquids from different sources by setting up a first waste liquid collection path and a second waste liquid collection path, and using a shared injection pump and multi-port valve for flow path distribution upstream: waste liquids such as cleaning fluids that do not require resin column treatment and have no subsequent retention value, and old buffer solutions, are directly introduced into the waste liquid tank through the first output port of the multi-port valve; waste liquids generated after the resin column separation step are introduced into the resin column through the second output port of the multi-port valve and classified for treatment. This separate management mode prevents valueless waste liquids from entering the internal temporary storage path, avoiding the occupation of waste liquid tank capacity and collection rack space, thus keeping the device structurally compact and adaptable to multi-channel, long-process radionuclide separation conditions without relying on increasing the waste liquid tank volume.

[0018] 2. This invention, through the coordinated use of a waste liquid tank, a level sensor, and a peristaltic pump in the second waste liquid collection channel, achieves automatic temporary storage, level monitoring, and trigger-based pumping of waste liquid generated by the resin column, forming a closed-loop control process of "temporary storage—detection—pumping—centralized collection." When the waste liquid tank level reaches a preset threshold, the peristaltic pump automatically starts, pumping the waste liquid from the tank through pipelines to a waste liquid tank for centralized collection. The peristaltic pump stops operating after the level returns to normal. This automated waste discharge process eliminates the need for manual waste liquid emptying or system shutdown during long-term radionuclide separation experiments, ensuring continuous operation and experimental stability under multi-channel conditions.

[0019] 3. This invention achieves centralized collection and transfer of intermittently generated, locally accumulated radioactive waste liquid from a waste liquid tank to a larger waste liquid container via a peristaltic pump, with the waste liquid container located outside the main body of the device. This enables the transfer and centralized collection of waste liquid within a fully enclosed pipeline, significantly reducing the frequency of direct contact and radiation exposure risks for operators during waste liquid treatment. Simultaneously, by arranging the high-capacity storage unit as a waste liquid container and converging it at the end of all pathways, the risk of secondary contamination from multi-point, decentralized collection on-site is reduced, enhancing the safety and controllability of the radioactive waste liquid collection process. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below, forming part of the present invention. The illustrative embodiments of the present invention and their descriptions explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 This is a schematic diagram of a waste liquid treatment device for automatic separation of radionuclides according to the present invention.

[0021] Explanation of reference numerals in the attached figures: 1. Injection pump; 2. Buffer tube; 3. Multi-way valve; 4. Resin column; 5. Collection rack; 6. Waste liquid tank; 7. Peristaltic pump; 8. Waste liquid container; 9. First pipeline; 10. Second pipeline; 11. Third pipeline; 12. Fourth pipeline; 13. Fifth pipeline; 14. Sixth pipeline. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. In the description of this invention, it should be noted that the term "or" is generally used to include the meaning of "and / or," unless otherwise expressly indicated.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a magnetic connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, in the description of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0024] Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] To address the problems existing in the prior art, embodiments of the present invention provide a waste liquid treatment device for the automatic separation of radionuclides, such as... Figure 1 As shown, the system includes a syringe pump 1, a multi-port valve 3, a resin column 4, a waste liquid tank 6, and a waste liquid container 8. The syringe pump 1 is used to quantitatively aspirate and deliver sample solution, buffer solution, or elution solution. The multi-port valve 3 is connected to the syringe pump 1 and selectively distributes the flow path of the delivered liquid. The resin column 4 is used for enrichment, elution, and separation of radionuclides. The waste liquid tank 6 is used to temporarily collect the waste liquid generated by the resin column 4 that does not need to be retained. The waste liquid container 8 is used to centrally store various types of waste liquid discharged from the system for subsequent unified disposal.

[0026] like Figure 1As shown, the waste liquid treatment device has two waste liquid collection channels. The first waste liquid collection channel is a direct discharge channel, and the second waste liquid collection channel is a resin column waste liquid collection channel. The first and second waste liquid collection channels share an upstream supply channel, which includes, in sequence, a syringe pump 1, a first pipeline 9, a buffer tube 2, a second pipeline 10, and a multi-way valve 3. The first waste liquid collection channel further includes a second pipeline 10, a third pipeline 11, and a waste liquid tank 8. The syringe pump 1 is located upstream of the waste liquid treatment device and is used to provide power for the input liquid / waste liquid and control the flow rate to achieve quantitative delivery of sample liquid, buffer solution, or washing solution. The output end of the syringe pump 1 is connected to the input end of the buffer tube 2 through the first pipeline 9. The buffer tube 2 is used to temporarily store and smoothly release the liquid. The output end of the buffer tube 2 is then connected to the input end of the multi-way valve 3 through the second pipeline 10, so that the liquid, driven by the syringe pump 1 and stabilized by the buffer tube 2, enters the multi-way valve 3. The multi-way valve 3 is located at the liquid distribution position, serving as a distribution node in this passage. It is used to select the subsequent flow direction of the liquid according to control commands. In the first waste liquid collection passage, one of the output directions (first output port) of the multi-way valve 3 is directly connected to the waste liquid tank 8 located outside the waste liquid treatment device via the third pipeline 11. This is used to directly discharge waste liquid that does not need to be treated by the resin column 4 and has no subsequent retention value into the waste liquid tank 8 during pipeline cleaning, buffer replacement, and other steps. Thus, when treating waste liquids that do not need to be retained, such as cleaning residue and old buffer solution that has been replaced, the syringe pump 1 provides power and sets the flow rate. The liquid sequentially enters the buffer tube 2 via the first pipeline 9, and then enters the multi-way valve 3 via the second pipeline 10. The multi-way valve 3 selects the discharge direction connected to the third pipeline 11, allowing the liquid to bypass the resin column 4 and directly enter the waste liquid tank 8, thereby achieving immediate external discharge and avoiding the retention of worthless waste liquid inside the device and the occupation of space.

[0027] The second waste liquid collection passage, in addition to the upstream liquid supply passage (injection pump 1, buffer tube 2, multi-way valve 3, first pipe 9 and second pipe 10), also includes a resin column 4, a collection rack 5, a waste liquid tank 6, a peristaltic pump 7 and its externally connected control module (not shown in the figure), a waste liquid tank 8, and a fourth pipe 12, a fifth pipe 13 and a sixth pipe 14. The passage between injection pump 1 and multi-way valve 3 is identical to that of the first waste liquid collection passage; that is, injection pump 1 provides power to the input liquid and controls the flow rate. The output end of injection pump 1 is connected to the input end of buffer tube 2 via first pipe 9, and the output end of buffer tube 2 is connected to the input end of multi-way valve 3 via second pipe 10, ensuring that the liquid to be treated undergoes flow stabilization and transition before entering multi-way valve 3.

[0028] The multi-port valve 3 selects another output direction (second output port) in the second waste liquid collection channel, guiding the liquid after it has been stabilized by the buffer tube 2 to the resin column 4 so that the liquid enters the resin column 4 for radionuclide separation. Specifically, the corresponding output port of the multi-port valve 3 is connected to the inlet of the resin column 4 through the fourth tube 12. The number of fourth tubes 12 is consistent with the number of resin columns 4. The sample solution, eluent or other reagents are driven by the syringe pump 1 to enter the multi-port valve 3 in sequence through the first tube 9, the buffer tube 2, and the second tube 10, and then enter the resin column 4 through the fourth tube 12.

[0029] The resin column 4 is filled with resin material for adsorbing, enriching, or eluting radionuclides. During the nuclide separation step, the target radionuclide can be retained by the resin or eluted from it. The outlet of the resin column 4 is located at its lower end, corresponding to a designated position on the collection rack 5. The collection rack 5 carries multiple collection tubes and a waste liquid tank 6, and is positioned relative to the outlet of the resin column 4, thus allowing for the differentiated collection of liquids flowing out at different stages according to the requirements of different steps.

[0030] The liquid flowing out of the resin column 4 is divided into two categories: one is the effective effluent that needs to be retained (such as the eluent containing the target nuclide). This type of effluent is directly introduced into the corresponding collection tube on the collection rack 5 from the outlet of the resin column 4 for separate collection, avoiding mixing with the effluent from other steps, and facilitating subsequent analysis or reuse; the other is the useless effluent that does not need to be retained (such as the rinsing liquid generated from the resin pretreatment, preequilibration, and rinsing steps, residual elution tail liquid, etc.). This type of effluent is introduced into the waste liquid tank 6 on the collection rack 5 for temporary storage.

[0031] Waste liquid tank 6 is used to temporarily collect the effluent from the resin columns 4 that does not need to be retained. In actual operation, the device usually operates in parallel with multiple channels, and multiple resin columns 4 will continuously discharge waste liquid into the same waste liquid tank 6 at different time periods. Therefore, waste liquid tank 6 is set as a centralized collection point. Waste liquid tank 6 has a built-in liquid level alarm sensor and monitors the liquid level in real time. When the waste liquid level reaches the alarm position, the external control module is connected to the peristaltic pump 7 and drives the peristaltic pump 7 to discharge the waste liquid in waste liquid tank 6 through the sixth pipeline 14 to the waste liquid tank 8 for collection. The peristaltic pump 7 is controlled to run according to the preset discharge time. After the discharge time is reached, the peristaltic pump 7 is automatically turned off, and then the system continues to wait for the liquid level alarm sensor to issue another alarm signal before executing the next round of timed discharge, thereby realizing the automatic transfer and discharge of waste liquid generated by the resin columns 4.

[0032] The inlet of the peristaltic pump 7 is connected to the bottom outlet of the waste liquid tank 6, and the two are connected by the fifth pipe 13; the outlet of the peristaltic pump 7 is connected to the external waste liquid tank 8 through the sixth pipe 14. After the peristaltic pump 7 starts, it pumps out the waste liquid accumulated in the waste liquid tank 6 through the fifth pipe 13 and transports it to the waste liquid tank 8 through the sixth pipe 14, so that the waste liquid in the waste liquid tank 6 is transferred in time until it is basically emptied. After the liquid level in the waste liquid tank 6 drops back to a safe range, the peristaltic pump 7 stops running, and the waste liquid tank 6 regains its capacity to continue receiving waste liquid generated by the resin column 4.

[0033] Waste liquid tank 8 is located outside the main body of the device and serves as a large-capacity centralized waste liquid storage unit. It is used to ultimately store the waste liquid generated by the resin column 4 and discharged through the waste liquid tank 6 and peristaltic pump 7. Waste liquid tank 8 can be disposed of manually after the experiment, without the need for frequent intervention during the experiment.

[0034] Thus, the second waste liquid collection channel forms the following flow path: injection pump 1 → first pipeline 9 → buffer pipe 2 → second pipeline 10 → multi-way valve 3 → fourth pipeline 12 → resin column 4 → collection rack 5; or resin column 4 → waste liquid tank 6 → fifth pipeline 13 → peristaltic pump 7 → sixth pipeline 14 → waste liquid tank 8. This channel realizes the hierarchical management of the effluent generated after treatment by resin column 4: the portion that needs to be retained is collected and stored separately segment by segment by collection rack 5; the useless effluent that does not need to be retained is uniformly sent to waste liquid tank 6, and under the condition of liquid level alarm triggering, the peristaltic pump 7 performs a timed drainage cycle of "alarm trigger → drainage for a preset time period → pump stop → waiting for the next alarm", transferring the waste liquid in batches to waste liquid tank 8. With this structure, while ensuring the separation quality, it can avoid the accumulation, overflow or frequent manual replacement of waste liquid inside the device due to continuous effluent from resin column 4, and realize stable and low-intervention waste liquid treatment in long-process, multi-channel radionuclide separation process.

[0035] Through the above structural design, this embodiment of the invention achieves a "dual-path diversion + centralized discharge" waste liquid management mode: Powered by the injection pump 1 and distributed via the multi-way valve 3, the cleaning fluid, which does not require treatment by the resin column 4 and has no retention value, and the replaced old buffer solution, are directly discharged along the first waste liquid collection path into the large-capacity waste liquid tank 8 outside the device, achieving immediate external discharge bypassing the resin column 4; the effluent generated by the resin column 4 is managed hierarchically along the second waste liquid collection path, with the effective elution solution containing the target nuclide being sequentially introduced into the corresponding collection tube on the collection rack 5 for separate storage, while the effluent that does not need to be retained... The liquid is drawn into the waste liquid tank 6 on the collection rack 5 for centralized temporary storage. The waste liquid tank 6 is monitored by a built-in liquid level alarm sensor. When the liquid level reaches the alarm position, the control module is triggered to drive the peristaltic pump 7 to pump out the liquid according to the preset drainage time. The pump stops automatically when the liquid level is reached, and then waits for the next alarm signal to start the timed drainage again. In principle, the above structure achieves source diversion through the multi-way valve 3 and realizes closed-loop control of "temporary storage - liquid level detection - automatic drainage - centralized external discharge" through the waste liquid tank 6 and the peristaltic pump 7. The drainage process adopts a control method that combines liquid level alarm triggering and timed drainage to ensure the controllability and consistency of the drainage rhythm. On the one hand, it avoids the use of useless waste liquid to occupy the internal space of the device, so that the whole machine can maintain a compact structure without relying on the enlarged volume of the waste liquid tank 6. On the other hand, it ensures that the multi-channel, long-term radionuclide separation process can be continuously operated without the need for manual dumping of waste liquid in the middle. Furthermore, since the waste liquid is transferred to the waste liquid tank 8 in the injection pump 1, peristaltic pump 7 and closed pipeline throughout the process, the probability of operators directly contacting radioactive waste liquid is significantly reduced, improving safety, automation level and engineering applicability.

[0036] In some preferred embodiments, the volume of the waste liquid tank is larger than that of the waste liquid tank, so as to centrally store the waste liquid transferred from the waste liquid tank during long-term continuous operation of the device, reduce the frequency of manual liquid emptying, and avoid interruption of the separation process due to the limited capacity of the waste liquid tank.

[0037] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. A waste liquid treatment device for automatic separation of radioactive nuclides, characterized in that, It includes a first waste liquid collection passage and a second waste liquid collection passage. The first waste liquid collection passage and the second waste liquid collection passage share an upstream liquid supply passage. The upstream liquid supply passage includes an injection pump and a multi-way valve. The injection pump inputs waste liquid into the multi-way valve. The first waste liquid collection passage also includes a waste liquid tank. The first output port of the multi-way valve is connected to the waste liquid tank. The waste liquid input to the multi-way valve is output through the first output port and then enters the waste liquid tank. The second waste liquid collection channel includes multiple resin columns, a waste liquid tank, a peristaltic pump, and the waste liquid bucket. The second output port of the multi-way valve is sequentially connected to the resin columns, the waste liquid tank, the peristaltic pump, and the waste liquid bucket. The waste liquid input to the multi-way valve passes through the second output port and is processed by the resin columns before entering the waste liquid tank for temporary storage. When the liquid level in the waste liquid tank reaches a preset liquid level threshold, it is pumped by the peristaltic pump to the waste liquid bucket for centralized collection, thereby realizing the automatic transfer and discharge of the waste liquid generated by the resin columns.

2. The waste liquid treatment device according to claim 1, characterized in that, The upstream liquid supply passage also includes a buffer tube, which is disposed between the injection pump and the multi-way valve.

3. The waste liquid treatment device according to claim 2, characterized in that, The injection pump is connected to the input end of the buffer tube via a first pipeline, and the output end of the buffer tube is connected to the input end of the multi-way valve via a second pipeline.

4. The waste liquid treatment device according to claim 1, characterized in that, It also includes a collection rack that carries multiple collection pipes and the waste liquid tank.

5. The waste liquid treatment device according to claim 4, characterized in that, The liquid flowing out from the lower end of the resin column is divided into effective effluent and waste liquid. When the effluent is the effective effluent, the resin column is positioned corresponding to the plurality of collection pipes, and the effective effluent enters the plurality of collection pipes through the lower end of the resin column. When the effluent is the waste liquid, the resin column is positioned corresponding to the waste liquid tank, and the waste liquid is temporarily stored in the waste liquid tank.

6. The waste liquid treatment device according to claim 1, characterized in that, The waste liquid tank is equipped with a liquid level sensor and a preset liquid level warning height.

7. The waste liquid treatment device according to claim 1, characterized in that, The waste liquid tank is connected to the peristaltic pump via a fifth pipeline, and the peristaltic pump is connected to the waste liquid container via a sixth pipeline. The peristaltic pump draws the waste liquid from the waste liquid tank through the fifth pipeline and transports it to the waste liquid container through the sixth pipeline.

8. The waste liquid treatment device according to claim 7, characterized in that, The peristaltic pump is configured to stop operating when the liquid level in the waste liquid tank drops below the preset liquid level threshold after the waste liquid is extracted.

9. The waste liquid treatment device according to claim 1, characterized in that, The second output port of the multi-way valve is connected to the resin column through a fourth pipeline, the number of which is the same as the number of resin columns.

10. The waste liquid treatment device according to claim 1, characterized in that, The peristaltic pump is externally connected to a drive module. When the liquid level in the waste liquid tank reaches a preset liquid level threshold, the drive module drives the peristaltic pump to pump out the waste liquid.

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