Radioactive waste liquid purification treatment energy spectrum data acquisition device, method and monitoring equipment

Abstract

The present application relates to a kind of radioactive waste liquid purification treatment spectrum data acquisition device, method and monitoring equipment, one end of sampling pump is communicated with decay processing box through pipeline, and the other end is communicated with the input end of sample turbidity detector through pipeline;The output end of sample turbidity detector is respectively connected with the input end of coagulation precipitation module, filtration module through pipeline;The output end of coagulation precipitation module is connected with the input end of filtration module through pipeline, and the output end of filtration module is connected with the input end of sample display module through pipeline;The output end of sample display module is communicated with variable processing box through pipeline;Radioactive energy spectrum pickup probe is set outside sample display module.The device, method and monitoring equipment provided by the present application effectively remove solid particles in waste liquid sample before collecting energy spectrum data, thereby effectively improving the accuracy of energy spectrum data acquisition.

Description

Technical Field

[0001] This invention relates to the field of radioactive waste liquid treatment and detection technology, and in particular to a radioactive waste liquid purification treatment energy spectrum data acquisition device, method and monitoring equipment. Background Technology

[0002] Nuclear medicine is an emerging discipline that uses nuclear technology to diagnose, treat, and research diseases. Its application in hospital diagnosis and treatment is becoming increasingly widespread. The radiopharmaceuticals used in nuclear medicine are generally packaged in disposable containers and administered directly to patients via injection or orally. During dynamic observation, patients excrete radioactive waste in the restroom. All radioactive waste generated during the diagnostic and treatment processes using nuclear technology, including disposable containers used to package radiopharmaceuticals and laboratory cleaning water, must undergo decay treatment to meet standards before being discharged.

[0003] In existing technologies, radioactive waste liquids from nuclear medicine undergo decay treatment, and after sampling and monitoring to ensure compliance, they are discharged into the municipal sewage network. Traditional sampling and testing methods rely on manual sampling, which increases labor costs and does not comply with the requirements for automatic control and intelligent management in the "Nuclear Medicine Radiation Protection and Safety Requirements" HJ1188-2021. Furthermore, waste liquid decay treatment devices are generally buried underground, making sampling inconvenient.

[0004] Furthermore, the accuracy of current sampling and testing methods for radioactive waste liquids from nuclear medicine is not high. Although the accuracy of detecting the radioactivity of radionuclides using energy dispersive spectroscopy (EDS) analysis is relatively high, the large amount of solid particles contained in radioactive waste liquids from nuclear medicine severely affects the accuracy of EDS data acquisition. Consequently, the radioactivity of radionuclides calculated using EDS data is also inaccurate, making it unsuitable for the detection of radioactive waste liquids from nuclear medicine. Summary of the Invention

[0005] To address the aforementioned technical issues, this invention provides a device and method for acquiring energy spectrum data in the purification and treatment of radioactive waste liquid.

[0006] The radioactive waste liquid purification and treatment energy spectrum data acquisition device provided by the present invention includes a sampling pump, a sample turbidity detector, a coagulation and sedimentation module, a filtration module, a sample display module, and a radioactive energy spectrum pickup probe, wherein:

[0007] One end of the sampling pump is connected to the decay treatment tank storing radioactive waste liquid for nuclear medicine through a pipeline, and the other end is connected to the input end of the sample turbidity detector through a pipeline.

[0008] The output of the sample turbidity detector is connected to the input of the coagulation and sedimentation module and the filtration module through pipes. When the sample turbidity detector detects that the turbidity of the waste liquid sample is greater than the preset turbidity threshold, it controls the waste liquid sample to enter the coagulation and sedimentation module; otherwise, it controls the waste liquid sample to enter the filtration module.

[0009] The output of the coagulation and sedimentation module is connected to the input of the filtration module via a pipe, and the output of the filtration module is connected to the input of the sample display module via a pipe.

[0010] The output of the sample display module is connected to a decay treatment box storing radioactive waste liquid from nuclear medicine via a pipe;

[0011] A radiometric energy spectrum pickup probe is positioned outside the sample display module, with the probe facing the sample display module, to collect energy spectrum data.

[0012] Furthermore, the coagulation and sedimentation module includes a pipeline mixer and a pipeline sedimentation unit connected in sequence.

[0013] Furthermore, the filtration module is equipped with an ultrafiltration membrane to filter waste liquid samples.

[0014] Furthermore, the coagulation and sedimentation module is also equipped with a controller, a first electric valve is installed on the pipeline between the sample turbidity detector and the coagulation and sedimentation module, and a second electric valve is installed on the pipeline between the sample turbidity detector and the filtration module.

[0015] The controller is electrically connected to the sample turbidity detector, the first electric valve, and the second electric valve, respectively.

[0016] Furthermore, the sample display module is a resin hollow tube.

[0017] This invention also provides a method for acquiring energy spectrum data of radioactive waste purification treatment, which uses the above-mentioned energy spectrum data acquisition device for radioactive waste liquid purification treatment to acquire energy spectrum data, and the method includes:

[0018] The sampling pump extracts waste liquid samples from the decay treatment tank storing radioactive waste liquid from nuclear medicine and inputs the waste liquid samples into the sample turbidity detector;

[0019] The sample turbidity detector measures the turbidity of the waste liquid sample. If the turbidity of the waste liquid sample is greater than the preset turbidity threshold, the waste liquid sample is input to the coagulation and sedimentation module, which coagulates and settles the waste liquid sample before inputting it to the filtration module; otherwise, the waste liquid sample is directly input to the filtration module.

[0020] The filtration module filters the waste liquid sample and inputs the filtered waste liquid sample into the sample display module;

[0021] The sample display module is irradiated by a radiometric energy spectrum pickup probe to collect energy spectrum data.

[0022] Furthermore, the preset turbidity threshold is 1 NTU.

[0023] Furthermore, the methods also include:

[0024] After acquiring the spectral data, the radiometric spectral pickup probe transmits the spectral data to the spectral data calculation and analysis system to calculate the radioactivity of the radionuclides in the waste liquid sample.

[0025] Furthermore, the methods also include:

[0026] The energy spectrum data calculation and analysis system will compare the current numerical model obtained by energy spectrum data analysis with the preset numerical model to determine whether to extend the identification and acquisition time of the radioactive energy spectrum pickup probe. The current numerical model includes the waveform and current energy value of at least one radionuclide obtained by energy spectrum data analysis. The preset numerical model is a numerical model based on the radionuclide contained in the nuclear medicine radioactive waste liquid. The preset numerical model includes the waveform and preset energy value of each radionuclide contained in the nuclear medicine radioactive waste liquid.

[0027] The comparison between the current numerical model and the preset numerical model to determine whether to extend the time for the radiometric energy spectrum pickup probe to identify and acquire energy spectrum data includes:

[0028] Based on the waveform diagram of each radionuclide in the current numerical model, determine the corresponding preset energy value from the preset numerical model;

[0029] The current energy value corresponding to each radionuclide in the current numerical model is compared with the preset energy value. If the current energy value corresponding to a radionuclide is greater than the preset energy value, the identification and acquisition time of the radioactive energy spectrum pickup probe for energy spectrum data is extended.

[0030] This invention also provides an intelligent monitoring and treatment device for nuclear medicine radioactive waste liquid, the device including an automatic control device, a steam-water backwashing device, and a waste liquid collection and treatment tank, wherein:

[0031] The waste liquid collection and treatment tank is equipped with an inlet pipe, a decay cleaning chamber, and a radionuclide monitoring device. The decay cleaning chamber is divided into a radioactive sludge decay area and a waste liquid decay area by a vertically set filter screen. The decay cleaning chamber is also equipped with a liquid level monitoring device.

[0032] One end of the inlet pipe extends out of the waste liquid collection and treatment box and connects to the waste liquid collection pipe, while the other end extends into the radioactive sludge decay zone of the decay cleaning chamber. An inlet control valve is installed on the inlet pipe.

[0033] The radioactive sludge decay zone is equipped with a sludge discharge outlet at the bottom, and the waste liquid decay zone is equipped with a waste liquid discharge outlet at the bottom. The sludge discharge outlet is connected to the municipal sewage network through a first pumping pipe equipped with a sludge drainage pump, and the waste liquid discharge outlet is connected to the municipal sewage network through a second pumping pipe equipped with a waste liquid drainage pump. The first pumping pipe is equipped with a sewage discharge control valve, and the second pumping pipe is equipped with a drainage control valve.

[0034] A radionuclide monitoring device includes a radioactive waste liquid purification and treatment energy spectrum data acquisition device and an energy spectrum data analysis device as described in claim 1. The input end of the sampling pump in the radioactive waste liquid purification and treatment energy spectrum data acquisition device is connected to the waste liquid discharge port through a pipeline. The output end of the sample display module in the radioactive waste liquid purification and treatment energy spectrum data acquisition device is connected to the waste liquid decay zone through a pipeline. The radioactive waste liquid purification and treatment energy spectrum data acquisition device and the energy spectrum data analysis device are electrically connected.

[0035] The steam-water backwashing device is connected to the exhaust and drainage pipe installed at the bottom of the radioactive sludge decay zone via a steam-water backwashing pipe.

[0036] The automatic control device is electrically connected to the steam-water backwashing device, the energy dispersive spectroscopy (EDS) data analysis device, the liquid level monitoring device, the liquid inlet control valve, the sludge drainage pump, the waste liquid drainage pump, the sewage discharge control valve, and the drainage control valve, respectively. The radioactive waste liquid purification treatment EDS data acquisition device, method, and monitoring equipment provided by this invention have at least the following beneficial effects:

[0037] (1) The radioactive purification and energy spectrum data acquisition device provided by this invention first purifies the radioactive waste liquid before collecting energy spectrum data of the waste liquid sample using a radioactive energy spectrum pickup probe. This removes solid particles from the waste liquid sample to prevent them from affecting the accuracy of energy spectrum data acquisition, thereby improving the accuracy of the calculated radioactive activity of radionuclides. Furthermore, when removing solid particles from the waste liquid sample, the turbidity of the waste liquid sample is first detected. For samples with high turbidity, a coagulation and sedimentation module is used for pretreatment before filtration, followed by filtration using a filtration module, effectively improving the filtration effect.

[0038] (2) The radioactive purification and energy spectrum data device provided by the present invention realizes the automatic acquisition of energy spectrum data without human intervention, reduces labor costs, and makes the acquisition process more intelligent.

[0039] (3) The monitoring equipment provided by the present invention includes a decay cleaning chamber comprising a radioactive sludge decay zone and a waste liquid decay zone. The radioactive sludge decay zone is used to decay radioactive sludge, and the waste liquid decay zone is used to decay liquid and small particulate waste in radioactive waste liquid. This enables the radioactive sludge and waste liquid to be decayed and cleaned together. After the radioactive sludge is discharged, it does not need to go through a professional treatment plant for decay cleaning and can be directly discharged into the municipal sewage pipe network, simplifying the nuclear medicine radioactive waste liquid treatment procedure.

[0040] (4) The monitoring equipment provided by the present invention can effectively reduce the turbidity of the waste liquid in the decay zone and reduce the content of solid particulate matter after treating the radioactive waste liquid. Furthermore, when the radioactive waste liquid purification treatment energy spectrum data acquisition device is used to collect energy spectrum data, it can further improve the accuracy of energy spectrum data acquisition and improve the accuracy of radioactivity detection of the treated radioactive waste liquid.

[0041] (5) The monitoring equipment provided by the present invention, by setting up an automatic control device, a radionuclide monitoring device, a liquid level monitoring device, a liquid inlet control valve, a sludge drainage pump, a waste liquid drainage pump, a sewage discharge control valve, and a drainage control valve, realizes intelligent treatment and compliant discharge of radioactive waste liquid from nuclear medicine. The entire process does not require manual intervention, saving a lot of labor costs. It is safe, environmentally friendly, intelligent and convenient, and is more in line with the requirements for automatic control and intelligent management in the "Nuclear Medicine Radiation Protection and Safety Requirements" HJ1188-2021. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of an energy spectrum data acquisition device for radioactive waste liquid purification and treatment according to an embodiment of the present invention;

[0044] Figure 2 This is a schematic diagram of the steps in the radioactive purification treatment energy spectrum data acquisition method in one embodiment of the present invention. Figure 1 ;

[0045] Figure 3 This is a schematic diagram of the steps for acquiring energy spectrum data during radioactive purification in another embodiment of the present invention. Figure 2 ;

[0046] Figure 4 This is a schematic plan view of a waste liquid collection and treatment tank in one embodiment of the present invention;

[0047] Figure 5 for Figure 4 AA cross-section view;

[0048] Figure 6 This is a schematic diagram of the control principle of an intelligent monitoring and treatment device for nuclear medicine radioactive waste liquid according to an embodiment of the present invention;

[0049] 1-Sampling pump, 2-Sample turbidity detector, 3-Coagulation and sedimentation module, 4-Filtration module, 5-Sample display module, 6-Automatic control device, 7-Air-water backwashing device, 8-Waste liquid collection and treatment tank, 801-Inlet pipe, 802-Decayation cleaning chamber, 803-Radioactive nuclide monitoring device, 804-Filter screen, 805-Radioactive sludge decay zone, 806-Waste liquid decay zone, 807-Inlet control valve, 808-Sludge drainage pump, 809-Waste liquid drainage pump, 810-Sewage discharge control valve, 811-Drainage control valve, 812-Exhaust and drainage pipe, 815-Liquid level monitoring device, 9-Aeration device. Detailed Implementation

[0050] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0051] In one embodiment of the present invention, such as Figure 1 As shown, the radioactive waste liquid purification and treatment energy spectrum data acquisition device includes a sampling pump 1, a sample turbidity detector 2, a coagulation and sedimentation module 3, a filtration module 4, a sample display module 5, and a radioactive energy spectrum pickup probe (not shown in the figure), wherein:

[0052] One end of the sampling pump 1 is connected to the decay treatment tank storing radioactive waste liquid for nuclear medicine through a pipeline, and the other end is connected to the input end of the sample turbidity detector 2 through a pipeline.

[0053] The output of the sample turbidity detector 2 is connected to the input of the coagulation and sedimentation module 3 and the filtration module 4 through pipes. When the sample turbidity detector 2 detects that the turbidity of the waste liquid sample is greater than the preset turbidity threshold, it controls the waste liquid sample to enter the coagulation and sedimentation module 3; otherwise, it controls the waste liquid sample to enter the filtration module 4.

[0054] The output of the coagulation and sedimentation module 3 is connected to the input of the filtration module 4 via a pipe, and the output of the filtration module 4 is connected to the input of the sample display module 5 via a pipe.

[0055] The output of sample display module 5 is connected to the decay treatment box storing radioactive waste liquid from nuclear medicine via a pipe.

[0056] A radiometric energy spectrum pickup probe is set outside the sample display module 5, with the probe facing the sample display module 5, in order to collect energy spectrum data.

[0057] The output of the sample display module 5 is connected to the decay treatment box storing radioactive waste liquid. After the radioactive energy spectrum pickup probe collects the energy spectrum data, the waste liquid sample flows back to the decay treatment box storing the radioactive waste liquid.

[0058] Furthermore, the sample display module 5 is a resin hollow tube. Its material is resin, which allows the radiometric energy dispersive spectroscopy (RDS) probe to collect the DRS data of the waste liquid sample inside.

[0059] Furthermore, since excessive solid particles in the waste liquid can lead to inaccurate energy spectrum data acquisition, in order to enable the energy spectrum data acquisition device for radioactive waste liquid purification in this scheme to have better energy spectrum data acquisition effect, the turbidity of the nuclear medicine radioactive waste liquid it detects should preferably be below 10 NTU.

[0060] The radioactive waste liquid purification and treatment energy spectrum data acquisition device provided in this embodiment is set outside the decay treatment box storing radioactive waste liquid. Its specific working process is as follows: when it is necessary to collect energy spectrum data, the sampling pump 1 is turned on, and the sampling pump 1 is used to extract the decay treatment waste liquid as a sample from the decay treatment box storing nuclear medicine radioactive waste liquid. First, the waste liquid sample is input into the sample turbidity detector 2 for turbidity detection. If the turbidity is greater than the preset turbidity threshold, the waste liquid sample contains large particulate waste. To prevent clogging, the waste liquid sample is controlled to sequentially enter the coagulation and sedimentation module 3 and the filtration module 4. In the coagulation and sedimentation module 3, the large particulate waste is first broken down into small particulate waste, and the small particulate waste is aggregated into flocs. Then, the flocs in the waste liquid sample are filtered through the filtration module 4, thereby removing the solid particulate matter in the waste liquid sample. The sample is then input into the sample display module 5, where a radiometric energy dispersive spectroscopy (RTS) probe is used to collect energy dispersive spectroscopy data. If the turbidity detected by the sample turbidity detector 2 is less than or equal to the preset turbidity threshold, the waste liquid sample does not contain large particulate waste. The waste liquid sample is then controlled to be input into the filtration module 4 for direct filtration to remove the solid particulate matter in the waste liquid sample. The sample is then input into the sample display module 5, where an RTS probe is used to collect energy dispersive spectroscopy data. After the data collection is completed, the sampling pump is turned off.

[0061] The radioactive waste liquid purification and treatment energy spectrum data acquisition device provided in this embodiment first purifies the waste liquid sample before collecting energy spectrum data using a radioactive energy spectrum pickup probe. This removes solid particles from the waste liquid sample to prevent them from affecting the accuracy of energy spectrum data acquisition, thereby improving the accuracy of the calculated radioactivity activity of radioactive elements. Furthermore, when removing solid particles from the waste liquid sample, the turbidity of the waste liquid sample is first detected. For samples with high turbidity, a coagulation and sedimentation module is used for pretreatment before filtration, followed by filtration, effectively improving the filtration efficiency.

[0062] In another embodiment of the present invention, the coagulation and sedimentation module 3 includes a pipeline mixer and a pipeline sedimentation unit connected in sequence. The pipeline mixer is used to break down large particles of waste in the waste liquid sample into smaller particles, and the pipeline sedimentation unit is used to aggregate the formed small particles of waste into flocs for subsequent filtration by the filtration module.

[0063] In another embodiment of the present invention, the filtration module 4 is equipped with an ultrafiltration membrane, which is used to filter the waste liquid sample. An ultrafiltration membrane is a semi-permeable polymer membrane used in the ultrafiltration process to separate polymeric colloids or suspended particles of a certain size from a solution. In this embodiment, the use of an ultrafiltration membrane effectively removes solid particulate waste from the waste liquid sample.

[0064] In another embodiment of the present invention, a controller is further provided in the coagulation and sedimentation module 3, a first electric valve is provided on the pipeline between the sample turbidity detector 2 and the coagulation and sedimentation module 3, and a second electric valve is provided on the pipeline between the sample turbidity detector 2 and the filter module 4; the controller is electrically connected to the sample turbidity detector 2, the first electric valve and the second electric valve respectively.

[0065] In this embodiment, the controller is electrically connected to the sample turbidity detector 2, the first electric valve, and the second electric valve. When the sample turbidity detector 2 detects the turbidity data of the waste liquid sample, it sends the turbidity data to the controller. The controller compares the received turbidity data with a preset turbidity threshold. When the turbidity is greater than the preset turbidity threshold, the controller controls the first electric valve to open, so that the waste liquid sample is first input into the coagulation and sedimentation module 3 and then into the filtration module 4. When the turbidity is less than or equal to the preset turbidity threshold, the controller controls the second electric valve to open, so that the waste liquid sample is directly input into the filtration module 4. The whole process is automatically controlled, which is convenient and fast.

[0066] In another embodiment of the present invention, a method for acquiring energy spectrum data of radioactive waste purification treatment is also provided, which uses the above-mentioned energy spectrum data acquisition device for radioactive waste liquid purification treatment to acquire energy spectrum data, such as... Figure 2 As shown, the method includes the following steps:

[0067] Step S1: The sampling pump extracts waste liquid samples from the decay treatment tank storing nuclear medicine radioactive waste liquid and inputs the waste liquid samples into the sample turbidity detector.

[0068] Step S2: The turbidity of the waste liquid sample is detected by a sample turbidity detector.

[0069] Step S3: Determine whether the turbidity of the waste liquid sample is greater than the preset turbidity threshold. If yes, proceed to step S4; otherwise, proceed to step S5.

[0070] Specifically, the preset turbidity threshold in this step can be set by technicians according to the actual situation, and this invention does not impose any restrictions on it. Preferably, the preset turbidity threshold can be set to 1 NTU.

[0071] Step S4: Input the waste liquid sample into the coagulation and sedimentation module, which will coagulate and settle the waste liquid sample before inputting it into the filtration module.

[0072] Step S5: Directly input the waste liquid sample into the filtration module.

[0073] Step S6: The filtration module filters the waste liquid sample and inputs the filtered waste liquid sample into the sample display module.

[0074] Step S7: Irradiate the sample display module with a radiometric energy spectroscopy pickup probe to acquire energy spectral data.

[0075] Furthermore, once the collection is complete, the sampling pump is turned off.

[0076] The radioactive purification treatment energy spectrum data acquisition method provided in this embodiment removes solid particles from the waste liquid sample before collecting the energy spectrum data using a radioactive energy spectrum pickup probe. This prevents the particles from affecting the accuracy of the energy spectrum data acquisition and improves the accuracy of the calculated radioactivity activity of radioactive elements. Furthermore, when removing solid particles from the waste liquid sample, the turbidity of the sample is first detected. For samples with high turbidity, a coagulation and sedimentation module is used for pretreatment before filtration, effectively improving the filtration efficiency.

[0077] In another embodiment of the invention, such as Figure 3 As shown, the method also includes the following steps:

[0078] Step S8: After the radiometric energy spectrum pickup probe acquires the energy spectrum data, it transmits the energy spectrum data to the energy spectrum data calculation and analysis system to calculate the radionuclides (e.g., total α, total β, ...) in the waste liquid sample. 131 I-level radioactivity.

[0079] Furthermore, when the radionuclides (total α, total β, ...) in the waste liquid sample are calculated... 131 After determining the radioactivity level (I), it can be displayed on a screen to facilitate timely access to relevant data by technicians.

[0080] In another embodiment of the present invention, based on the previous embodiment, the method further includes: the energy spectrum data calculation and analysis system compares the current numerical model obtained by energy spectrum data analysis with the preset numerical model to determine whether to extend the identification and acquisition time of the radioactive energy spectrum pickup probe for energy spectrum data.

[0081] The current numerical model includes waveforms and current energy values ​​of at least one radionuclide obtained from energy spectrum data analysis. Different nuclear medicine radioactive waste liquids may contain different types of radioactive elements. When performing energy spectrum data analysis, it is necessary to identify all radionuclides in the waste liquid sample to obtain the corresponding waveforms and current energy values.

[0082] The preset numerical model is a numerical model based on the radionuclides contained in the nuclear medicine radioactive waste liquid. The preset numerical model includes waveform diagrams and preset energy values ​​for each radionuclide contained in the nuclear medicine radioactive waste liquid. Specifically, it first determines which radionuclides are contained in the nuclear medicine radioactive waste liquid being treated, and then determines the corresponding waveform diagrams and preset energy values ​​for each radionuclide.

[0083] The comparison between the current numerical model and the preset numerical model to determine whether to extend the time for the radiometric energy spectrum pickup probe to identify and acquire energy spectrum data includes:

[0084] Based on the waveform diagram of each radionuclide in the current numerical model, determine the corresponding preset energy value from the preset numerical model;

[0085] The current energy value corresponding to each radionuclide in the current numerical model is compared with the preset energy value. If the current energy value corresponding to a radionuclide is greater than the preset energy value, the identification and acquisition time of the radioactive energy spectrum pickup probe for energy spectrum data is extended.

[0086] Since the energy values ​​of the energy spectrum data in the waste liquid after decay cleaning are often low, especially in the later stages of the decay cycle when the radioactivity has basically reached the low value required by the specifications, if the energy value of the energy spectrum data collected by the radiometric energy spectrum identification probe is high in this step, there may be a problem that the collected energy spectrum data is not true and invalid data. In this case, appropriately extending the acquisition time of the radiometric energy spectrum acquisition probe can avoid the acquisition of occasional non-true energy spectrum data.

[0087] Specifically, the time for the radiometric energy spectrum pickup probe to identify and acquire energy spectrum data can be extended by extending the start-up time of the sampling pump.

[0088] The radioactive waste liquid purification and treatment energy spectrum data acquisition device and method provided by this invention pre-purifies the radioactive waste liquid to remove solid particles before collecting energy spectrum data from the waste liquid sample using a radioactive energy spectrum pickup probe. This removes solid particles from the waste liquid sample to prevent them from affecting the accuracy of energy spectrum data acquisition, thereby improving the accuracy of the calculated radioactivity activity of radioactive elements. Furthermore, when removing solid particles from the waste liquid sample, the turbidity of the waste liquid sample is first detected. For samples with high turbidity, a coagulation and sedimentation module is used for pre-filtration before filtration, effectively improving the filtration and purification effect. In addition, it achieves automatic acquisition of energy spectrum data without manual intervention, reducing labor costs and making the acquisition process more intelligent.

[0089] This invention also provides an intelligent monitoring device for the treatment of radioactive waste liquid in nuclear medicine, such as... Figure 4-6 As shown, the equipment includes an automatic control device 6, a steam-water backwashing device 7, and a waste liquid collection and treatment tank 8, wherein:

[0090] The waste liquid collection and treatment tank 8 is buried underground in actual use. Inside, there is an inlet pipe 801, a decay cleaning chamber 802, and a radionuclide monitoring device 803. The decay cleaning chamber 802 is divided into a radioactive sludge decay zone 805 and a waste liquid decay zone 806 by a vertically arranged filter screen 804. A liquid level monitoring device 815 is also installed inside the decay cleaning chamber. The liquid level monitoring device 815 can be any commonly used liquid level monitoring device in the prior art, and this invention does not limit it. One end of the inlet pipe 801 extends out of the waste liquid collection and treatment tank 8 and connects to a waste liquid collection pipe (not shown in the figure), while the other end extends into the radioactive sludge decay zone 805 of the decay cleaning chamber 802. An inlet control valve 807 is installed on the inlet pipe 801.

[0091] The waste liquid treatment collection tank 8 is used to collect and treat nuclear medicine radioactive waste liquid and monitor the radionuclides in the waste liquid. The nuclear medicine radioactive waste liquid enters the radioactive sludge decay zone 805 in the decay cleaning chamber 802 via the inlet pipe 801. Since the radioactive sludge decay zone 805 and the waste liquid decay zone 806 are separated only by a filter screen 804, the liquid and small particulate waste in the nuclear medicine radioactive waste liquid can pass through the filter screen 804 into the waste liquid decay zone 806 for decay cleaning, while large particulate waste is intercepted in the radioactive sludge decay zone 805 for decay cleaning. Specifically, the size of the filter pores on the filter screen 804 is set by technicians according to actual needs; this invention does not impose any restrictions on this.

[0092] The radioactive sludge decay zone 805 is equipped with a sludge discharge outlet at the bottom, and the waste liquid decay zone 806 is equipped with a waste liquid discharge outlet at the bottom. The sludge discharge outlet is connected to the municipal sewage network through a first pumping pipe equipped with a sludge drainage pump 808, and the waste liquid discharge outlet is connected to the municipal sewage network through a second pumping pipe equipped with a waste liquid drainage pump 809. The first pumping pipe is equipped with a sewage control valve 810, and the second pumping pipe is equipped with a drainage control valve 811.

[0093] When the liquid inlet control valve 807, the sewage discharge control valve 810, and the drainage control valve 811 are closed, the entire decay cleaning chamber 802 becomes a sealed structure, thereby enabling the decay cleaning of radioactive waste liquid.

[0094] The radionuclide monitoring device 803 includes the aforementioned radioactive waste liquid purification treatment energy spectrum data acquisition device and energy spectrum data analysis device, wherein the energy spectrum data analysis device can be installed on the ground.

[0095] In the radioactive waste liquid purification and treatment energy spectrum data acquisition device, the input end of the sampling pump is connected to the waste liquid discharge port through a pipeline, the output end of the sample display module in the radioactive waste liquid purification and treatment energy spectrum data acquisition device is connected to the waste liquid decay zone through a pipeline, and the radioactive waste liquid purification and treatment energy spectrum data acquisition device is electrically connected to the energy spectrum data analysis device.

[0096] The steam-water backwashing device 7 is connected to the exhaust and drain pipe 812 located at the bottom of the radioactive sludge decay zone 805 via a steam-water backwashing pipeline. The steam-water backwashing device 7 performs steam-water backwashing, sending gas or water pressure to the exhaust and drain pipe 812 through the steam-water backwashing pipeline to backwash the sludge deposited in the radioactive sludge decay zone 805, preventing sludge caking and facilitating the smooth discharge of sludge after decay cleaning. Furthermore, an exhaust and drain control valve can be installed at the connection point between the exhaust and drain pipe 812 and the steam-water backwashing pipeline. This valve is electrically connected to the automatic control device 6 and opens and closes under the control of the automatic control device 6 to ensure the sealing of the decay cleaning chamber 802 when steam-water backwashing is not performed.

[0097] The automatic control device 6 is electrically connected to the steam-water backwashing device 7, the radionuclide monitoring device 803, the liquid level monitoring device 815, the liquid inlet control valve 807, the sludge drainage pump 808, the waste liquid drainage pump 809, the sewage discharge control valve 810, and the drainage control valve 811, respectively. It is used to control the automatic operation of the entire intelligent treatment and monitoring equipment for nuclear medicine radioactive waste liquid. Specifically, the automatic control device can be a PLC controller or other types of controllers; this invention does not limit its application to these.

[0098] The working process of the intelligent treatment and monitoring equipment for nuclear medicine radioactive waste liquid provided in this embodiment is as follows: the automatic control device controls the inlet control valve to be in the open state, and controls the sludge drainage pump, waste liquid drainage pump, sewage control valve, and drainage control valve to be in the closed state. The nuclear medicine radioactive waste liquid enters the radioactive sludge decay zone of the decay cleaning chamber through the inlet pipe. The liquid and small particulate waste in the nuclear medicine radioactive waste liquid can enter the waste liquid decay zone through the filter screen for decay cleaning, while large particulate waste is intercepted in the radioactive sludge decay zone for decay cleaning. The liquid level monitoring device monitors the liquid level in the decay cleaning chamber in real time and sends the monitoring data to the automatic control device. When the liquid level in the decay cleaning chamber reaches the preset maximum level (i.e., the radioactive sludge decay zone and the waste liquid decay zone are full), the automatic control device closes the inlet control valve, allowing the radioactive waste liquid to be placed in the radioactive sludge decay zone and the waste liquid decay zone for decay cleaning. At the same time, the radionuclide monitoring device monitors the radioactivity of the waste liquid at the waste liquid discharge port and transmits the detection results to the automatic control device. The automatic control device compares the detected radioactivity with the preset activity threshold. If the radioactivity is lower than the preset activity threshold, and the placement time of the radioactive waste liquid in the radioactive sludge decay zone and the waste liquid decay zone meets the time specified in "Nuclear Medicine Radiation Protection and Safety Requirements" HJ1188-2021 (implemented on November 1, 2021), the automatic control device opens the sludge drainage pump, the waste liquid drainage pump, the sewage control valve, and the drainage control valve to discharge the sludge and waste liquid.

[0099] Meanwhile, when radioactive waste liquid is placed in the decay cleaning chamber for decay cleaning, the automatic control device will turn on the steam and water backwashing device at regular intervals (the specific time interval can be set by the technicians) to prevent sludge from caking.

[0100] The intelligent treatment and monitoring equipment for nuclear medicine radioactive waste liquid provided in this embodiment eliminates the septic tank in traditional treatment devices, only setting up a decay cleaning chamber, thus reducing the overall size of the intelligent treatment and monitoring device and occupying less space. Simultaneously, the decay cleaning chamber includes a radioactive sludge decay zone and a waste liquid decay zone. The radioactive sludge decay zone is used to decay the radioactive sludge, and the waste liquid decay zone is used to decay the waste liquid filtered from the radioactive waste liquid. This achieves the simultaneous decay and cleaning treatment of radioactive sludge and waste liquid. After the radioactive sludge is discharged, it does not need to undergo further decay cleaning at a specialized treatment plant and can be directly discharged into the municipal sewage network, simplifying the treatment of nuclear medicine radioactive waste liquid. The system is equipped with automatic control devices, radionuclide monitoring devices, liquid level monitoring devices, inlet control valves, sludge drainage pumps, waste liquid drainage pumps, sewage control valves, and drainage control valves. This enables intelligent treatment and compliant discharge of radioactive waste liquid from nuclear medicine. The entire process requires no manual intervention, saving significant labor costs. It combines safety, environmental friendliness, intelligence, and convenience, and better meets the requirements for automatic control and intelligent management in the "Nuclear Medicine Radiation Protection and Safety Requirements" HJ1188-2021. Finally, the equipment is also equipped with a steam-water backwashing device, which can perform steam-water backwashing to prevent radioactive sludge from caking and facilitate the smooth discharge of radioactive sludge after decay.

[0101] In another embodiment of the invention, such as Figure 6 As shown, the equipment also includes an aeration device 9, which is connected to an exhaust drain pipe 810 located at the bottom of the radioactive sludge decay zone 805 via an aeration pipe. The aeration device 9 is also electrically connected to the automatic control device 6. The aeration device 9 is used for aerobic aeration, providing pressurized air to the exhaust drain pipe 810, which then enters the decay cleaning chamber, preventing anaerobic biological reactions in the radioactive sludge and the generation of harmful gases through anaerobic fermentation. The aeration device 9 can be any aeration device commonly used in the prior art, and this invention does not limit its use.

[0102] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the nature and scope of the present invention. Various modifications made to the above embodiments by those skilled in the art after reading this specification are all within the scope of protection of the present invention.

Claims

1. A device for acquiring energy spectrum data for the purification and treatment of radioactive waste liquid, characterized in that, The device includes a sampling pump, a sample turbidity detector, a coagulation and sedimentation module, a filtration module, a sample display module, and a radiometric spectroscopy pickup probe, wherein: One end of the sampling pump is connected to the decay treatment tank storing radioactive waste liquid for nuclear medicine via a pipeline, and the other end is connected to the input end of the sample turbidity detector via a pipeline. The output of the sample turbidity detector is connected to the input of the coagulation and sedimentation module and the filtration module through pipes. When the sample turbidity detector detects that the turbidity of the waste liquid sample is greater than the preset turbidity threshold, it controls the waste liquid sample to enter the coagulation and sedimentation module; otherwise, it controls the waste liquid sample to enter the filtration module. The output of the coagulation and sedimentation module is connected to the input of the filtration module via a pipe, and the output of the filtration module is connected to the input of the sample display module via a pipe. The output of the sample display module is connected to the decay treatment box storing nuclear medicine radioactive waste liquid via a pipe; The radiometric energy spectrum pickup probe is located outside the sample display module and is oriented towards the sample display module to collect energy spectrum data.

2. The radioactive waste liquid purification and treatment energy spectrum data acquisition device according to claim 1, characterized in that, The coagulation and sedimentation module includes a pipeline mixer and a pipeline sedimentation unit connected in sequence.

3. The radioactive waste liquid purification and treatment energy spectrum data acquisition device according to claim 1, characterized in that, The filtration module is equipped with an ultrafiltration membrane to filter waste liquid samples.

4. The radioactive waste liquid purification and treatment energy spectrum data acquisition device according to claim 1, characterized in that, The coagulation and sedimentation module is also equipped with a controller, and a first electric valve is installed on the pipeline between the sample turbidity detector and the coagulation and sedimentation module, and a second electric valve is installed on the pipeline between the sample turbidity detector and the filtration module. The controller is electrically connected to the sample turbidity detector, the first electric valve, and the second electric valve, respectively.

5. The radioactive waste liquid purification and treatment energy spectrum data acquisition device according to claim 1, characterized in that, The sample display module is a resin hollow tube.

6. A method for acquiring energy spectrum data during radioactive purification treatment, characterized in that, The method for acquiring energy spectrum data using the energy spectrum data acquisition device for radioactive waste liquid purification treatment as described in any one of claims 1-5 includes: The sampling pump extracts waste liquid samples from the decay treatment tank storing nuclear medicine radioactive waste liquid and inputs the waste liquid samples into the sample turbidity detector; The sample turbidity detector detects the turbidity of the waste liquid sample. If the turbidity of the waste liquid sample is greater than a preset turbidity threshold, the waste liquid sample is input to the coagulation and sedimentation module, which coagulates and settles the waste liquid sample before inputting it to the filtration module; otherwise, the waste liquid sample is directly input to the filtration module. The filtration module filters the waste liquid sample and inputs the filtered waste liquid sample into the sample display module; The radiometric energy spectrum pickup probe irradiates the sample display module to collect energy spectrum data.

7. The method for acquiring energy spectrum data of radioactive purification treatment according to claim 6, characterized in that, The preset turbidity threshold is 1 NTU.

8. The method for acquiring energy spectrum data of radioactive purification treatment according to claim 6, characterized in that, The method further includes: After acquiring the energy spectrum data, the radioactive energy spectrum pickup probe transmits the energy spectrum data to the energy spectrum data calculation and analysis system to calculate the radioactivity of the radionuclides in the waste liquid sample.

9. The method for acquiring energy spectrum data of radioactive purification treatment according to claim 8, characterized in that, The method further includes: The energy spectrum data calculation and analysis system compares the current numerical model obtained by analyzing the energy spectrum data with a preset numerical model to determine whether to extend the identification and acquisition time of the radioactive energy spectrum pickup probe for energy spectrum data. The current numerical model includes the waveform and current energy value of at least one radionuclide obtained by analyzing the energy spectrum data. The preset numerical model is a numerical model preset based on the radionuclide contained in the nuclear medicine radioactive waste liquid. The preset numerical model includes the waveform and preset energy value of each radionuclide contained in the nuclear medicine radioactive waste liquid. The comparison between the current numerical model and the preset numerical model to determine whether to extend the time for the radiometric energy spectrum pickup probe to identify and acquire energy spectrum data includes: Based on the waveform diagram corresponding to each radionuclide in the current numerical model, determine the corresponding preset energy value from the preset numerical model; The current energy value corresponding to each radionuclide in the current numerical model is compared with the preset energy value. If the current energy value corresponding to a radionuclide is greater than the preset energy value, the identification and acquisition time of the radioactive energy spectrum pickup probe for energy spectrum data is extended.

10. A smart monitoring device for the treatment of radioactive waste liquid in nuclear medicine, characterized in that, The equipment includes an automatic control device, a steam-water backwashing device, and a waste liquid collection and treatment tank, wherein: The waste liquid collection and treatment tank is equipped with an inlet pipe, a decay cleaning chamber, and a radionuclide monitoring device. The decay cleaning chamber is divided into a radioactive sludge decay zone and a waste liquid decay zone by a vertically arranged filter screen. The decay cleaning chamber is also equipped with a liquid level monitoring device. One end of the inlet pipe extends out of the waste liquid collection and treatment box and connects to the waste liquid collection pipe, while the other end extends into the radioactive sludge decay zone of the decay cleaning chamber. An inlet control valve is provided on the inlet pipe. The radioactive sludge decay zone is provided with a sludge discharge outlet at the bottom, and the waste liquid decay zone is provided with a waste liquid discharge outlet at the bottom. The sludge discharge outlet is connected to the municipal sewage network through a first pumping pipe equipped with a sludge drainage pump, and the waste liquid discharge outlet is connected to the municipal sewage network through a second pumping pipe equipped with a waste liquid drainage pump. The first pumping pipe is equipped with a sewage discharge control valve, and the second pumping pipe is equipped with a drainage control valve. The radionuclide monitoring device includes a radioactive waste liquid purification and treatment energy spectrum data acquisition device and an energy spectrum data analysis device as described in claim 1. The input end of the sampling pump in the radioactive waste liquid purification and treatment energy spectrum data acquisition device is connected to the waste liquid discharge port through a pipeline. The output end of the sample display module in the radioactive waste liquid purification and treatment energy spectrum data acquisition device is connected to the waste liquid decay region through a pipeline. The radioactive waste liquid purification and treatment energy spectrum data acquisition device is electrically connected to the energy spectrum data analysis device. The steam-water backwashing device is connected to the exhaust and drainage pipe installed at the bottom of the radioactive sludge decay zone via a steam-water backwashing pipe. The automatic control device is electrically connected to the steam-water backwashing device, the energy spectrum data analysis device, the liquid level monitoring device, the liquid inlet control valve, the sludge drainage pump, the waste liquid drainage pump, the sewage discharge control valve, and the drainage control valve, respectively.

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