Radiation dose evaluation method for radionuclide-containing sludge treatment and corresponding device

Abstract

The invention discloses a radiation dose evaluation method for radionuclide-containing sludge treatment and a corresponding device. The method comprises the following steps: calculating the activity concentration of radionuclides in sludge containing radionuclides in a sewage treatment plant according to the annual discharge amount of wastewater containing radionuclides and the quality of annual sludge produced by the sewage treatment plant; based on the radionuclide-containing sludge, calculating the irradiation dose of sludge accumulation on workers of the sewage treatment plant, and calculating the irradiation dose of sludge fertilization on the public and the irradiation dose of sludge incineration on the public; and respectively comparing and analyzing the irradiation doses caused by sludge accumulation, sludge fertilization and sludge incineration, selecting the treatment scene with the maximum public dose as an evaluation scene of sludge treatment, and taking the irradiation dose calculated under the evaluation scene as an evaluation result. Therefore, the public dosage caused by the sludge containing the radionuclides is given according to the situation that the radionuclides are enriched in the sludge of the sewage treatment plant, and a reliable and effective evaluation basis is provided.

Description

Technical Field

[0001] The present application relates to the technical field of nuclear radiation treatment and protection, specifically to the technical fields of treatment of sludge containing radionuclides and radiation evaluation, and in particular to a radiation dose evaluation method and corresponding device for treatment of sludge containing radionuclides. Background Art

[0002] With the rapid development of nuclear medicine, the use of radioactive medical isotopes has continued to increase. Wastewater containing radionuclides generated by nuclear medicine during diagnosis and treatment is discharged into the urban domestic sewage network after decay treatment in decay pools. When these wastewaters are treated in sewage treatment plants, the radionuclides they contain will be enriched in the sludge during the treatment process. Due to the diversity of subsequent sludge treatment methods, it is urgent to scientifically calculate the radiation dose that may be caused to sewage treatment plant workers and other members of the public during the sludge treatment process to ensure safety and health.

[0003] Among the existing environmental impact assessment methods, there is no systematic assessment method that is fully targeted at the enrichment scenarios of radionuclides in sewage treatment plant sludge, and it is impossible to clearly give the public dose caused by sludge containing radionuclides. Summary of the invention

[0004] The present application provides a radiation dose evaluation method and corresponding device for the treatment of sludge containing radionuclides, so as to solve the problem that there is no systematic evaluation method for the enrichment scenario of radionuclides in the sludge of sewage treatment plants in the existing environmental impact assessment schemes.

[0005] The technical solution is as follows:

[0006] In a first aspect, a method for evaluating radiation dose of sludge containing radionuclides is provided, comprising:

[0007] Based on the annual discharge of wastewater containing radionuclides and the annual mass of sludge containing radionuclides produced by the sewage treatment plant after being discharged into the sewage pipeline, calculate the activity concentration of radionuclides in the sludge containing radionuclides in the sewage treatment plant after the wastewater containing radionuclides is discharged to the sewage treatment plant;

[0008] Based on the external radiation dose of sludge accumulation, external radiation dose of air immersion and internal radiation dose of inhalation caused by the radioactive nuclide sludge to the workers of the sewage treatment plant, the radiation dose caused by sludge accumulation to the workers of the sewage treatment plant is calculated;

[0009] In view of the scenario where the radionuclide-containing sludge is used for agricultural fertilization, the radiation dose to the public caused by the sludge fertilization is calculated based on the external radiation dose of sludge accumulation, air immersion external radiation dose, inhalation internal radiation dose, crop ingestion internal radiation dose, milk ingestion internal radiation dose and meat ingestion internal radiation dose caused by the radionuclide-containing sludge in the fertilization scene to the public;

[0010] In view of the scene of the incineration of the sludge containing radionuclides, the radiation dose caused to the public by the incineration of the sludge containing radionuclides is calculated based on the external radiation dose caused to the public by air immersion and the internal radiation dose caused by the incineration of the sludge containing radionuclides;

[0011] The radiation doses caused by sludge accumulation, sludge fertilization and sludge incineration were compared and analyzed respectively, and the treatment scenario with the largest public dose was selected as the evaluation scenario of sludge treatment, and the radiation dose calculated under this evaluation scenario was taken as the evaluation result.

[0012] In a possible implementation, based on the annual discharge of wastewater containing radionuclides and the annual mass of sludge containing radionuclides produced by the sewage treatment plant after the wastewater containing radionuclides is discharged into the sewage pipe, the activity concentration of radionuclides in the sludge containing radionuclides in the sewage treatment plant after the wastewater containing radionuclides is discharged into the sewage treatment plant is calculated, specifically including:

[0013] Based on the annual discharge of wastewater containing radionuclides, the annual sludge mass produced by the sewage treatment plant after being discharged into the sewage pipe, and the activity concentration of radionuclides in the wastewater containing radionuclides when it is discharged, the activity concentration of radionuclides in the sludge containing radionuclides in the sewage treatment plant is calculated by the following formula:

[0014]

[0015] Among them, C 泥 is the activity concentration of radionuclides in the sludge containing radionuclides; C 池 A is the activity concentration of radionuclides in wastewater containing radionuclides when it is discharged; 池 is the annual discharge of wastewater containing radionuclides; K 污水处理厂 It is the annual sludge mass produced at the sewage treatment plant after being discharged into the sewage pipe.

[0016] In a possible implementation, based on the sludge containing radionuclides, the external radiation dose of sludge accumulation, the external radiation dose of air immersion, and the internal radiation dose of inhalation caused to the workers of the sewage treatment plant, the radiation dose caused by sludge accumulation to the workers of the sewage treatment plant is calculated, specifically including:

[0017] Based on the activity concentration of radionuclides in the sludge containing radionuclides and the sludge accumulation external radiation dose conversion factor, the sludge accumulation external radiation dose caused to the workers in the sewage treatment plant is calculated by the following formula:

[0018] Dose 堆积外照射 =C 泥 ×ρ×OF 工人 ×DF 堆积外照射

[0019] Among them, ρ is the density of sludge; OF 工人 DF is the proportional factor of annual exposure time; 堆积外照射 The external radiation dose conversion factor for sludge accumulation;

[0020] Based on the activity concentration of radionuclides in the sludge containing radionuclides and the air immersion dose external exposure conversion factor, the air immersion external exposure dose caused to the workers in the sewage treatment plant is calculated by the following formula:

[0021] Dose 空气浸没外照射 =C 空气 ×OF 工人 ×DF 空气浸没

[0022] C 空气1 =C 泥 ×RF

[0023] Among them, C 空气1 is the concentration of radionuclides in the air caused by the resuspension of radionuclides in the sludge treatment scenario; DF 空气浸没 is the air immersion dose external radiation conversion factor; RF is the concentration of suspended particles in the air;

[0024] Based on the activity concentration of radionuclides in the sludge containing radionuclides and the inhalation dose conversion factor, the inhalation internal radiation dose caused to the workers in the sewage treatment plant is calculated by the following formula:

[0025] Dose 吸入 =C 空气1 ×OF 工人 ×InhR×DF 吸入

[0026] Where InhR is the annual air intake; DF 吸入 is the inhalation dose conversion factor;

[0027] The external radiation dose from sludge accumulation, air immersion, and inhalation to the workers in the sewage treatment plant is summed up to:

[0028] Dose 污水处理厂工人 =Dose 堆积外照射 +Dose空气浸没外照射 +Dose 吸入

[0029] Obtain the radiation doses induced by sludge accumulation to sewage treatment plant workers.

[0030] In a possible implementation, based on the sludge containing radionuclides, the external radiation dose of sludge accumulation, the external radiation dose of air immersion, and the internal radiation dose of inhalation caused to the workers of the sewage treatment plant, the radiation dose caused by sludge accumulation to the workers of the sewage treatment plant is calculated, specifically including:

[0031] Based on the activity concentration of radionuclides in the sludge containing radionuclides and the sludge accumulation external radiation dose conversion factor, the sludge accumulation external radiation dose caused to the workers in the sewage treatment plant is calculated by the following formula:

[0032] Dose 堆积外照射 =C 泥 ×ρ×OF 工人 ×DF 堆积外照射

[0033] Among them, ρ is the density of sludge; OF 工人 DF is the proportional factor of annual exposure time; 堆积外照射 The external radiation dose conversion factor for sludge accumulation;

[0034] Based on the activity concentration of radionuclides in the sludge containing radionuclides and the air immersion dose external exposure conversion factor, the air immersion external exposure dose caused to the workers in the sewage treatment plant is calculated by the following formula:

[0035] Dose 空气浸没外照射 =C 空气 ×OF 工人 ×DF 空气浸没

[0036] C 空气1 =C 泥 ×RF

[0037] Among them, C 空气1 is the concentration of radionuclides in the air caused by the resuspension of radionuclides in the sludge treatment scenario; DF 空气浸没 is the air immersion dose external radiation conversion factor; RF is the concentration of suspended particles in the air;

[0038] Based on the activity concentration of radionuclides in the sludge containing radionuclides and the inhalation dose conversion factor, the inhalation internal radiation dose caused to the workers in the sewage treatment plant is calculated by the following formula:

[0039] Dose 吸入 =C 空气1 ×OF 工人 ×InhR×DF吸入

[0040] Where InhR is the annual air intake; DF 吸入 is the inhalation dose conversion factor;

[0041] The external radiation dose from sludge accumulation, air immersion, and inhalation to the workers in the sewage treatment plant is summed up to:

[0042] Dose 污水处理厂工人 =Dose 堆积外照射 +Dose 空气浸没外照射 +Dose 吸入

[0043] Obtain the radiation doses induced by sludge accumulation to sewage treatment plant workers.

[0044] In a possible implementation, based on the air immersion external radiation dose and inhalation internal radiation dose caused by the sludge containing radionuclides to the public in the incineration scene, the radiation dose caused by the sludge incineration to the public is calculated, specifically including:

[0045] According to the activity concentration of radionuclides in the air under the incineration scene, the air immersion external radiation dose caused to the public in the incineration scene is calculated by the following formula:

[0046] Dose 外照 =C A ×DF 空气

[0047] in, is the concentration of radionuclides in the air; P is the share of wind direction blowing in the public direction in a year; F is the Gaussian diffusion factor at different heights and evaluation distances; K is the proportion of radionuclides released through dust; u is the average wind speed; T 处理 DF is the time from the discharge of waste liquid to the incineration of sludge in the sewage treatment plant; 空气 is the dose conversion factor for air immersion;

[0048] Based on the activity concentration of radionuclides in the air under the incineration scene and the annual air inhalation volume, the inhalation internal exposure dose to the public in the incineration scene is calculated by the following formula:

[0049] Dose 吸入 =C A ×InhR×DF 吸入

[0050] Where InhR is the annual air intake; DF 吸入 is the inhalation dose conversion factor;

[0051] The sum of the external radiation dose caused by air immersion and internal radiation dose caused by incineration to the public is as follows:

[0052] Dose 污泥进行焚烧 =Dose 外照 +Dose 吸入

[0053] Obtain the radiation dose to the public caused by sludge incineration.

[0054] In a possible implementation, the nuclide is I-131, and the evaluation parameters related to its properties include:

[0055] The decay factor is 3.15E+01; the inhalation dose conversion factor is 7.40E-09; the ingestion dose conversion factor is 2.20E-08; the air immersion dose conversion factor is 5.33E-07; the ground accumulation dose conversion factor is 3.44E-10; the crop concentration factor is 2.00E-02; and the feed concentration factor is 1.00E-01.

[0056] In a possible implementation, the common evaluation parameters used in the evaluation process include:

[0057] The concentration of suspended particulate matter in the air is 1.00E-07; the annual air intake is 8.40E+03; the annual exposure time ratio during work is 2.28E-01; the time from the harvesting of crops to their consumption is 3.80E-02; the annual intake of crops is 4.10E+02; the proportion of fresh feed consumed by animals is 8.00E-01; the time from the harvesting of feed to the consumption of feed is 2.47E-01; the amount of feed consumed by dairy animals is 1.60E+01; the average time from the collection of fresh milk to its consumption is 3.00E-03; the annual intake of milk is 2.50E+02 ; The amount of feed consumed by meat animals is taken as 1.20E+01; the average time from the collection of fresh meat to its ingestion is taken as 5.50E-02; the annual intake of meat is taken as 1.00E+02; the density of sludge is taken as 1.00E+03; the dilution factor between sludge and uncontaminated soil is taken as 3.00E-02; the conversion factor between dry weight and wet weight of sludge is taken as 4.00E+00; the Gaussian diffusion factor is taken as 3.00E-03; the proportion of radionuclides released through dust is taken as 7.00E-01; the time from sewage discharge to sludge treatment is taken as 1.90E-02; the average wind speed is taken as 2.00E+00.

[0058] In a second aspect, a radiation dose evaluation device for treating sludge containing radionuclides is provided, comprising:

[0059] The activity concentration calculation module is used to calculate the activity concentration of radionuclides in the sludge containing radionuclides in the sewage treatment plant after the wastewater containing radionuclides is discharged into the sewage pipe, based on the annual discharge of the wastewater containing radionuclides and the annual mass of sludge generated in the sewage treatment plant after the wastewater containing radionuclides is discharged into the sewage pipe;

[0060] A sludge accumulation calculation module is used to calculate the radiation dose caused by sludge accumulation to the workers of the sewage treatment plant based on the sludge containing radionuclides, the external radiation dose caused by sludge accumulation, the external radiation dose caused by air immersion, and the internal radiation dose caused by inhalation to the workers of the sewage treatment plant;

[0061] A sludge fertilization calculation module is used to calculate the radiation dose caused to the public by sludge fertilization based on the external radiation dose of sludge accumulation, air immersion external radiation dose, inhalation internal radiation dose, crop ingestion internal radiation dose, milk ingestion internal radiation dose and meat ingestion internal radiation dose caused by the sludge containing radionuclides to the public, in view of the scenario where the sludge containing radionuclides is used for agricultural fertilization;

[0062] A sludge incineration calculation module, for calculating the radiation dose caused to the public by the sludge incineration, based on the scene of the sludge containing radionuclides being incinerated, and based on the external radiation dose caused to the public by the air immersion and the internal radiation dose caused by the sludge containing radionuclides;

[0063] The evaluation module is used to compare and analyze the radiation doses caused by sludge accumulation, sludge fertilization, and sludge incineration, select the treatment scenario with the largest public dose as the evaluation scenario of sludge treatment, and use the radiation dose calculated under the evaluation scenario as the evaluation result.

[0064] In a third aspect, a computer-readable storage medium is provided, wherein at least one instruction is stored in the storage medium, and the at least one instruction is loaded and executed by a processor to implement the method of the above-mentioned aspect and any possible implementation manner.

[0065] According to a fourth aspect, a computer program product is provided, comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements the above-mentioned aspects and any possible implementation method.

[0066] The beneficial effects of the technical solution provided by this application include at least:

[0067] It can be seen from the above technical scheme that the embodiment of the present application can calculate the activity concentration of radionuclides in the radionuclide-containing sludge in the sewage treatment plant after the radionuclide-containing wastewater is discharged into the sewage treatment plant according to the annual discharge of the radionuclide-containing wastewater and the annual mass of the radionuclide-containing sludge produced by the sewage treatment plant after being discharged into the sewage pipe; based on the radionuclide-containing sludge, calculate the radiation dose caused by sludge accumulation to the workers of the sewage treatment plant; for the scenario where the radionuclide-containing sludge is used for agricultural fertilization, calculate the radiation dose caused by sludge fertilization to the public; for the scenario where the radionuclide-containing sludge is incinerated, calculate the radiation dose caused by sludge incineration to the public; respectively compare and analyze the radiation doses caused by sludge accumulation, sludge fertilization, and sludge incineration, select the treatment scenario that causes the largest public dose as the evaluation scenario of sludge treatment, and use the radiation dose calculated under the evaluation scenario as the evaluation result. Therefore, a systematic evaluation method for the enrichment scenarios of radionuclides in sewage treatment plant sludge is developed, which clearly gives the public dose caused by sludge containing radionuclides, and provides an evaluation basis for the scientific calculation of the radiation dose caused to sewage treatment plant workers and other public, so as to ensure the safety and health of people in the radiation environment.

[0068] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0070] Figure 1 It is a schematic diagram of the steps of the radiation dose evaluation method for treating sludge containing radionuclides provided in an embodiment of the present application.

[0071] Figure 2 It is a schematic diagram of the radiation dose evaluation process for the treatment of sludge containing radionuclides provided in the embodiments of the present application.

[0072] Figure 3 It is a structural block diagram of a radiation dose evaluation device for treating sludge containing radionuclides provided in yet another embodiment of the present application.

[0073] Figure 4 It is a block diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0074] The following is a description of exemplary embodiments of the present application in conjunction with the accompanying drawings, including various details of the embodiments of the present application to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0075] Obviously, the described embodiments are only part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0076] It should be noted that the terminal devices involved in the embodiments of the present application may include but are not limited to mobile phones, personal digital assistants (PDAs), wireless handheld devices, tablet computers and other smart devices; display devices may include but are not limited to personal computers, televisions and other devices with display functions.

[0077] In addition, the term "and / or" in this article is only a description of the association relationship between the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0078] Among the existing environmental impact assessment methods, there is no systematic assessment method that is fully targeted at the enrichment scenarios of radionuclides in sewage treatment plant sludge, and it is impossible to clearly give the public dose caused by sludge containing radionuclides. In view of this, the present application proposes a radiation dose evaluation scheme for the treatment of sludge containing radionuclides, and the inventive concept thereof is as follows: according to the annual discharge of wastewater containing radionuclides and the annual mass of sludge containing radionuclides produced at the sewage treatment plant after being discharged into the sewage pipe, the activity concentration of radionuclides in the sludge containing radionuclides in the sewage treatment plant after the wastewater containing radionuclides is discharged into the sewage treatment plant is calculated; based on the sludge containing radionuclides, the radiation dose caused by sludge accumulation to the workers of the sewage treatment plant is calculated; for the scenario in which the sludge containing radionuclides is used for agricultural fertilization, the radiation dose caused by sludge fertilization to the public is calculated; for the scenario in which the sludge containing radionuclides is incinerated, the radiation dose caused by sludge incineration to the public is calculated; the radiation doses caused by sludge accumulation, sludge fertilization and sludge incineration are compared and analyzed respectively, and the treatment scenario causing the largest dose to the public is selected as the evaluation scenario of sludge treatment, and the radiation dose calculated under the evaluation scenario is used as the evaluation result. Therefore, a systematic evaluation method for the enrichment scenarios of radionuclides in sewage treatment plant sludge is developed, which clearly gives the public dose caused by sludge containing radionuclides, and provides an evaluation basis for the scientific calculation of the radiation dose caused to sewage treatment plant workers and other public, so as to ensure the safety and health of people in the radiation environment.

[0079] Reference Figure 1 As shown, it is a schematic diagram of the steps of the radiation dose evaluation method for the treatment of sludge containing radionuclides provided in an embodiment of the present application. The execution subject of the method may be a radiation dose evaluation device for the treatment of sludge containing radionuclides, and the evaluation device may be a hardware device or a software module, specifically, it may be, for example, a terminal device such as a computer, a tablet computer, a smart phone, a smart wearable device, or it may also be, for example, a functional module or a combination of multiple functional modules integrated on these terminal devices.

[0080] like Figure 1 As shown, the radiation dose evaluation method for treating sludge containing radionuclides may include the following steps:

[0081] Step 102: Calculate the activity concentration of radionuclides in the sludge containing radionuclides in the sewage treatment plant after the wastewater containing radionuclides is discharged into the sewage pipe, based on the annual discharge amount of the wastewater containing radionuclides and the mass of the sludge containing radionuclides produced annually in the sewage treatment plant.

[0082] Optionally, in step 102, when calculating the activity concentration of radionuclides in the sludge containing radionuclides in the sewage treatment plant after the wastewater containing radionuclides is discharged into the sewage treatment plant according to the annual discharge amount of the wastewater containing radionuclides and the mass of the sludge containing radionuclides produced annually in the sewage treatment plant after the wastewater containing radionuclides is discharged into the sewage pipe, the activity concentration of radionuclides in the sludge containing radionuclides in the sewage treatment plant can be calculated by the following formula according to the annual discharge amount of the wastewater containing radionuclides, the mass of the sludge produced annually in the sewage treatment plant after the wastewater containing radionuclides is discharged into the sewage pipe, and the activity concentration of radionuclides in the wastewater containing radionuclides when it is discharged:

[0083]

[0084] Among them, C 泥 is the activity concentration of radionuclides in the sludge containing radionuclides; C 池 A is the activity concentration of radionuclides in wastewater containing radionuclides when it is discharged; 池 is the annual discharge of wastewater containing radionuclides; K 污水处理厂 It is the annual sludge mass produced at the sewage treatment plant after being discharged into the sewage pipe.

[0085] Step 104: Calculate the radiation dose of the workers in the sewage treatment plant caused by the sludge accumulation based on the external radiation dose of the sludge, the external radiation dose of the air immersion and the internal radiation dose of the inhalation caused by the radioactive nuclide sludge to the workers in the sewage treatment plant.

[0086] Optionally, in step 104 of the present application, when calculating the radiation dose caused by sludge accumulation to the workers of the sewage treatment plant based on the sludge containing radionuclides, the external radiation dose caused by sludge accumulation, the external radiation dose caused by air immersion, and the internal radiation dose caused by inhalation to the workers of the sewage treatment plant, the radiation dose caused by sludge accumulation to the workers of the sewage treatment plant can be calculated by the following formula according to the activity concentration of radionuclides in the sludge containing radionuclides and the external radiation dose conversion factor of sludge accumulation:

[0087] Dose 堆积外照射 =C 泥 ×ρ×OF 工人 ×DF 堆积外照射

[0088] Among them, ρ is the density of sludge; OF 工人 DF is the proportional factor of annual exposure time; 堆积外照射 The external radiation dose conversion factor for sludge accumulation;

[0089] Based on the activity concentration of radionuclides in the sludge containing radionuclides and the air immersion dose external exposure conversion factor, the air immersion external exposure dose caused to the workers in the sewage treatment plant is calculated by the following formula:

[0090] Dose 空气浸没外照射 =C 空气 ×OF 工人 ×DF 空气浸没

[0091] C 空气1 =C 泥 ×RF

[0092] Among them, C 空气1 is the concentration of radionuclides in the air caused by the resuspension of radionuclides in the sludge treatment scenario; DF 空气浸没 is the air immersion dose external radiation conversion factor; RF is the concentration of suspended particles in the air;

[0093] Based on the activity concentration of radionuclides in the sludge containing radionuclides and the inhalation dose conversion factor, the inhalation internal radiation dose caused to the workers in the sewage treatment plant is calculated by the following formula:

[0094] Dose 吸入 =C 空气1 ×OF 工人 ×InhR×DF 吸入

[0095] Where InhR is the annual air intake; DF 吸入 is the inhalation dose conversion factor;

[0096] The external radiation dose from sludge accumulation, air immersion, and inhalation to the workers in the sewage treatment plant is summed up to:

[0097] Dose 污水处理厂工人 =Dose 堆积外照射 +Dose 空气浸没外照射 +Dose 吸入

[0098] Obtain the radiation doses induced by sludge accumulation to sewage treatment plant workers.

[0099] Step 106: For the scenario where the sludge containing radionuclides is used for agricultural fertilization, the radiation dose caused to the public by sludge fertilization is calculated based on the external radiation dose of sludge accumulation, air immersion, inhalation, crop ingestion, milk ingestion and meat ingestion caused by the sludge containing radionuclides in the fertilization scenario.

[0100] Optionally, in step 106 of the present application, when calculating the radiation dose caused to the public by sludge fertilization based on the external radiation dose of sludge accumulation, air immersion external radiation dose, inhalation internal radiation dose, crop ingestion internal radiation dose, milk ingestion internal radiation dose and meat ingestion internal radiation dose caused to the public by the sludge containing radionuclides in the fertilization scene, the external radiation dose of sludge accumulation caused to the public in the fertilization scene can be calculated by the following formula according to the activity concentration of radionuclides in the sludge containing radionuclides, the sludge accumulation external radiation dose conversion factor and the dilution factor:

[0101] Dose 堆积外照射 =C 泥 ×ρ×OF 农民 ×DF 堆积外照射 ×f red ×(1-exp(-λ e,s t b )) / λ e,s t b

[0102] Among them, ρ is the density of sludge; OF 农民 The annual sunlight exposure time for farmers to cultivate crops; DF 堆积外照射 f is the external radiation dose conversion factor for sludge accumulation; red is the dilution factor, which is used to consider the dilution of sludge and uncontaminated soil; e,s is the comprehensive decay rate of the radionuclide; λ is the nuclide decay factor; s is the rate constant of other nuclide removal processes except decay; t b is the accumulation time of radionuclides on the soil surface;

[0103] Based on the activity concentration of radionuclides in the sludge containing radionuclides and the air immersion dose external exposure conversion factor, the air immersion external exposure dose to the public in the fertilization scenario is calculated using the following formula:

[0104] Dose 空气浸没外照射 =C 空气2 ×OF×DF 空气浸没

[0105] Among them, C 空气2 =C 泥 ×RF×f red ×(1-exp(-λ e,s t b )) / λ e,s t b , is the concentration of radionuclides in the air caused by the resuspension of radionuclides under the fertilization scenario; RF is the concentration of suspended particles in the air; DF 空气浸没 is the air immersion dose external radiation conversion factor;

[0106] Based on the activity concentration of radionuclides in the sludge containing radionuclides and the concentration factor of radionuclides absorbed by the edible part of the crops from the soil, the inhalation internal exposure dose to the public in the fertilization scenario is calculated by the following formula:

[0107] Dose 吸入 =C 空气2 ×OF×InhR×DF 吸入

[0108] Where InhR is the annual air intake; DF 吸入 is the inhalation dose conversion factor;

[0109] Based on the activity concentration of radionuclides in the sludge containing radionuclides and the concentration factor of radionuclides absorbed by the edible part of the crops from the soil, the internal radiation dose of crops ingested by the public in the fertilization scenario is calculated by the following formula:

[0110] Dose 农作物食入 =C 泥 ×ConvF×CF 农作物 ×exp(-λ×T 农作物 )×fred×IR 农作物 ×DF 食入

[0111] Among them, CF 农作物 T is the concentration factor of radionuclides absorbed by the edible part of the crop from the soil; 农作物 The time from when crops are collected to when they are eaten; IR 农作物 is the annual food intake of crops; DF 食入 is the ingestion dose conversion factor; ConvF is the conversion factor between sludge dry weight and wet weight;

[0112] Based on the activity concentration of radionuclides in animal feed, the internal radiation dose to the public from milk ingestion in the fertilization scenario is calculated by the following formula:

[0113] Dose 奶类食入 =C 饲料 ×F 奶类 ×DMI 奶类 ×exp(-λ×T 奶类 )×IR 奶类 ×DF 食入

[0114] Among them, C 饲料 =C 泥 ×ConvF×CF 饲料 ×(f p +(1-f p )×exp(-λ×T 饲料)×fred, is the radionuclide activity concentration in animal feed; CF 饲料 f is the concentration factor of radionuclides absorbed by feed from soil; p The proportion of fresh feed consumed by animals; T 饲料 F is the time between feed harvest and feed consumption; 奶类 DMI is the fraction of radionuclides present in each liter of milk in equilibrium state at the daily intake of animals. 奶类 is the amount of feed consumed by dairy animals; T 奶类 is the average time from the collection to the consumption of fresh milk; IR 奶类 is the annual intake of milk;

[0115] Based on the activity concentration of radionuclides in animal feed, the internal radiation dose to the public from meat ingestion in the fertilization scenario is calculated by the following formula:

[0116] Dose 肉类食入 =C 饲料 ×F 肉类 ×DMI 肉类 ×exp(-λ×T 肉类 )×IR 肉类 ×DF 食入

[0117] Among them, F 肉类 DMI is the fraction of radionuclides present per kilogram of meat consumed by animals at equilibrium. 肉类 is the amount of feed consumed by meat animals; T 肉类 is the average time from the collection to the consumption of fresh meat; IR 肉类 is the annual intake of meat;

[0118] The sum of the external radiation doses from sludge accumulation, air immersion, inhalation, ingestion of crops, ingestion of milk, and ingestion of meat to the public in the fertilizer application scenario is as follows:

[0119] Dose 污泥用于农业用地 =Dose 堆积外照射 +Dose 空气浸没外照射 +Dose 吸入 +Dose 农作物食入 +Dose 奶类食入 +Dose 肉类食入

[0120] Obtain the radiation dose to the public caused by sewage sludge fertilization.

[0121] Step 108: With regard to the scene of the sludge containing radionuclides being incinerated, based on the external radiation dose caused by air immersion and the internal radiation dose caused by inhalation of the sludge containing radionuclides to the public in the incineration scene, the radiation dose caused by the sludge containing radionuclides to the public is calculated.

[0122] Optionally, in step 108 of the present application, when calculating the exposure dose caused by sludge incineration to the public based on the air immersion external exposure dose and inhalation internal exposure dose caused to the public by the sludge containing radionuclides in the incineration scene, the air immersion external exposure dose caused to the public in the incineration scene can be calculated by the following formula based on the activity concentration of radionuclides in the air under the incineration treatment scene:

[0123] Dose 外照 =C A ×DF 空气

[0124] in, is the concentration of radionuclides in the air; P is the share of wind direction blowing in the public direction in a year; F is the Gaussian diffusion factor at different heights and evaluation distances; K is the proportion of radionuclides released through dust; u is the average wind speed; T 处理 DF is the time from the discharge of waste liquid to the incineration of sludge in the sewage treatment plant; 空气 is the dose conversion factor for air immersion;

[0125] Based on the activity concentration of radionuclides in the air under the incineration scene and the annual air inhalation volume, the inhalation internal exposure dose to the public in the incineration scene is calculated by the following formula:

[0126] Dose 吸入 =C A ×InhR×DF 吸入

[0127] Where InhR is the annual air intake; DF 吸入 is the inhalation dose conversion factor;

[0128] The sum of the external radiation dose caused by air immersion and internal radiation dose caused by incineration to the public is as follows:

[0129] Dose 污泥进行焚烧 =Dose 外照 +Dose 吸入

[0130] Obtain the radiation dose to the public caused by sludge incineration.

[0131] Step 110: Compare and analyze the radiation doses caused by sludge accumulation, sludge fertilization, and sludge incineration respectively, select the treatment scenario that causes the largest public dose as the evaluation scenario of sludge treatment, and use the radiation dose calculated under the evaluation scenario as the evaluation result.

[0132] In a feasible scheme, the nuclide is I-131, and the evaluation parameters related to its properties include: decay factor, with a value of 3.15E+01; inhalation dose conversion factor, with a value of 7.40E-09; ingestion dose conversion factor, with a value of 2.20E-08; air immersion dose conversion factor, with a value of 5.33E-07; ground accumulation dose conversion factor, with a value of 3.44E-10; crop concentration factor, with a value of 2.00E-02; and feed concentration factor, with a value of 1.00E-01.

[0133] Furthermore, the common evaluation parameters used in the evaluation process include: the concentration of suspended particulate matter in the air, with a value of 1.00E-07; the annual air intake, with a value of 8.40E+03; the annual exposure time ratio during work, with a value of 2.28E-01; the time from the harvesting of crops to their consumption, with a value of 3.80E-02; the annual intake of crops, with a value of 4.10E+02; the proportion of fresh feed consumed by animals, with a value of 8.00E-01; the time from the harvesting of feed to the consumption of feed, with a value of 2.47E-01; the amount of feed consumed by dairy animals, with a value of 1.60E+01; the average time from the collection of fresh milk to its consumption, with a value of 3.00E-03; the annual intake of milk , taken as 2.50E+02; the amount of feed consumed by meat animals, taken as 1.20E+01; the average time from the collection of fresh meat to its ingestion, taken as 5.50E-02; the annual intake of meat, taken as 1.00E+02; the density of sludge, taken as 1.00E+03; the dilution factor between sludge and uncontaminated soil, taken as 3.00E-02; the conversion factor between dry weight and wet weight of sludge, taken as 4.00E+00; the Gaussian diffusion factor, taken as 3.00E-03; the proportion of radionuclides released through dust, taken as 7.00E-01; the time from sewage discharge to sludge treatment, taken as 1.90E-02; the average wind speed, taken as 2.00E+00.

[0134] This application systematically sorts out and counts the public exposure pathways caused by the discharge of wastewater containing radionuclides into sewage treatment plants and the enrichment of radionuclides in the sludge of sewage treatment plants. A calculation method for the dose of each exposure pathway is given, which can simply and conveniently evaluate the public dose caused by the treatment of sludge containing radionuclides.

[0135] It should be understood that the best public dose evaluation results calculated for different nuclides may be different. For example, nuclide 1 is calculated to be the radiation dose obtained by incineration treatment, nuclide 2 may be calculated to be the radiation dose obtained by agricultural fertilization treatment, and nuclide x may be calculated to be the radiation dose of workers in sewage treatment plants. Therefore, according to the above evaluation scheme, the public dose caused by sludge treatment can be determined for different nuclides.

[0136] It should be noted that in the present application, the execution order of step 104-step 108 is not limited. They can be executed simultaneously, or in the order of step 104-step 108, or the execution order can be rearranged. In short, the execution order of these three types of processing scenarios is not limited.

[0137] The following takes the radioactive wastewater discharge scenario of nuclear medicine as an example. It is assumed that there are two hospitals with nuclear medicine departments in medium-to-large cities. Their radioactive waste liquids are discharged into the same municipal sewage treatment plant, and the discharge volume is calculated based on a medium-to-large sewage treatment plant. This scenario is a more likely evaluation scenario in the future development of nuclear medicine. This application conservatively assumes that all radioactive nuclides are retained in the sludge generated by the sewage treatment plant.

[0138] Reference Figure 2 As shown, it is a schematic diagram of the radiation dose evaluation process of radionuclide sludge treatment provided in an embodiment of the present application.

[0139] The radioactive waste liquid discharged from the two hospitals was discharged into the sewage treatment plant as decay pool wastewater, and was retained in the sludge after being treated by the sewage treatment plant. Afterwards, the radiation dose caused by the sludge in different scenarios was calculated through three sludge treatment scenarios.

[0140] First, the annual emission of radionuclides and their activity concentrations in the WWTP after entering the WWTP were estimated.

[0141]

[0142] Where: C 泥 is the activity in the sludge (Bq / kg wet); C 池 is the activity concentration of radionuclides in the nuclear medicine decay pool when it is discharged (Bq / m3); C 池 is the annual discharge volume of the nuclear medicine decay pool (m3); K 污水处理厂 It is the annual sludge production (kg wet) of the sewage treatment plant that enters after the wastewater containing radionuclides is discharged into the urban sewage pipe.

[0143] In this case, it is assumed that the activity concentration of the radionuclide I-131 in the nuclear medicine decay pool is 10000Bq / m3, the annual discharge volume of the nuclear medicine decay pool is 1000m3, and the annual sludge production of the sewage treatment plant is 1.72E+09kg wet. The activity concentration of the sludge in the sewage treatment plant is calculated to be 5.80E-03Bq / kg wet.

[0144] After the wastewater containing radionuclides is discharged into the sewage treatment plant, the radiation dose of the sewage treatment plant workers due to sludge accumulation is calculated.

[0145] Sludge exposure scenario for workers: The main exposure pathways for sewage treatment plant workers are external exposure and internal exposure caused by inhalation of resuspended matter. The formula for calculating external exposure and inhalation dose is as follows:

[0146] Dose 污水处理厂工人 =Dose 堆积外照射 +Dose 空气浸没外照射 +Dose 吸入

[0147] Dose 堆积外照射 =C 泥 ×ρ×OF×DF 堆积外照射

[0148] Among them: Dose 堆积外照射 is the external radiation dose received by workers in sewage treatment plants (Sv / a); C 泥 is the activity in the sludge (Bq / kg wet); ρ is the density of the sludge (kg wet / m3); OF is the proportional factor of the annual exposure time; DF 堆积外照射 It is the external radiation dose conversion factor for sludge accumulation (Sv / a per Bq / m3).

[0149] Dose 空气浸没外照射 =C 空气 ×OF×DF 空气浸没

[0150] Dose 吸入 =C 空气 ×OF×InhR×DF 吸入

[0151] C 空气 =C 泥 ×RF

[0152] Among them: Dose 空气浸没外照射 is the air immersion external radiation dose (Sv / a) received by sewage treatment plant workers due to sludge resuspension; C 空气 is the concentration of radionuclides in the air caused by the resuspension of radionuclides (Bq / m3); DF 空气浸没is the air immersion dose external radiation conversion factor (Sv / a per Bq / m3); Dose 吸入 is the inhalation internal radiation dose received by sewage treatment plant workers due to sludge resuspension (Sv / a); InhR is the annual air inhalation volume (m3 / a); DF 吸入 is the inhalation dose conversion factor (Sv / Bq); RF is the concentration of suspended particles in the air (kg wet / m3).

[0153] Scenario of public exposure due to agricultural fertilization: Calculate the additional public exposure dose caused by the sludge generated by sewage treatment plants being used for agricultural fertilization.

[0154] If the sludge is applied to agricultural land, the following doses are calculated for a hypothetical farmer: external exposure, inhalation exposure, and internal exposure through ingestion of crops, meat, and milk produced on fields where the contaminated sludge was used as fertilizer.

[0155] Dose 污泥用于农业用地 =Dose 堆积外照射 +Dose 空气浸没外照射 +Dose 吸入 +Dose 农作物食入 +Dose 奶类食入 +Dose 肉类食入

[0156] Dose 堆积外照射 =C 泥 ×ρ×OF×DF 堆积外照射 ×f red ×(1-exp(-λ e,s t b )) / λ e,s t b

[0157] λ e,s =λ+λ s

[0158] Among them: Dose 污泥用于农业用地 The annual dose to the public caused by the use of radioactive sludge for fertilizing agricultural land (Sv / a); Dose 堆积外照射 It is the annual external radiation dose (Sv / a) of the surface deposits caused to the public by the accumulation of radionuclides on the surface after radioactive sludge is used for fertilization of agricultural land. 空气浸没外照 It is the annual external radiation dose (Sv / a) of the public caused by the resuspension of radioactive nuclides in the air after the radioactive sludge is used for fertilizing agricultural land; 吸入 It is the annual dose (Sv / a) of internal exposure to the public caused by the resuspension of radioactive nuclides after radioactive sludge is used for fertilization of agricultural land; 农作物食入It is the amount of internal radiation (Sv / a) received by the public after radioactive sludge is used as fertilizer for agricultural land and radionuclides are enriched in plants. 奶类食入 It is the internal radiation (Sv / a) received by the public after radioactive sludge is used for fertilizing agricultural land and radionuclides are transferred in the food chain and consumed by the public after consuming milk; Dose 肉类食入 It is the internal radiation exposure (Sv / a) received by the public after the radioactive sludge is used for fertilizing agricultural land and the radionuclides are transferred in the food chain; OF is the annual exposure time of farmers; f red is the dilution factor used to account for the dilution of sludge with uncontaminated soil, considering that sludge is present only in a thin layer on farmland, rather than being accumulated as in sewage treatment plants, and 3% of the topsoil layer contributing to farmers' external exposure is assumed to be composed of sludge; e,s is the integrated decay rate of the radionuclide (a-1); t b is the accumulation time of radionuclides on the soil surface (a); λ is the nuclide decay factor (a-1); s is the rate constant (a-1) of the nuclide removal process other than decay.

[0159] Dose 空气浸没外照射 =C 空气 ×OF×DF 空气浸没

[0160] Dose 吸入 =C 空气 ×OF×InhR×DF 吸入

[0161] C 空气 =C 泥 ×RF×f red ×(1-exp(-λ e,s t b )) / λ e,s t b

[0162] Dose 农作物食入 =C 泥 ×ConvF×CF 农作物 ×exp(-λ×T 农作物 )×fred×IR 农作物 ×DF 食入

[0163] Among them: CF 农作物 T is the concentration factor of radionuclides absorbed by the edible part of the crop from the soil (Bq / kg fresh per Bq / kg dry); 农作物 is the time from when crops are collected to when they are eaten (a); IR 农作物is the annual intake of crops (kg fresh / a); DF 食入 is the ingestion dose conversion factor (Sv / Bq). ConvF is the conversion factor between sludge dry weight and wet weight (kg wet / kg dry).

[0164] C 饲料 =C 泥 ×ConvF×Cf 饲料 ×(f p +(1-f p )×exp(-λ×T 饲料 )×fred

[0165] Where: C 饲料 is the radionuclide activity concentration in animal feed (Bq / kg dry); CF 饲料 is the concentration factor of radionuclides absorbed by feed from soil (Bq / kg dry per Bq / kg dry); p The proportion of fresh feed consumed by animals; T 饲料 is the time between feed harvest and feed consumption (a).

[0166] Dose 奶类食入 =C 饲料 ×F 奶类 ×DMI 奶类 ×exp(-λ×T 奶类 )×IR 奶类 ×DT 食入

[0167] Among them: F 奶类 DMI is the fraction of radionuclides present in each liter of milk in equilibrium state (day / L) consumed by animals daily. 奶类 is the amount of feed consumed by dairy animals (kg dry / day); T 奶类 is the average time from collection to ingestion of fresh milk (a); IR 奶类 is the annual intake of milk (L / a).

[0168] Dose 肉类食入 =C 饲料 ×F 肉类 ×DMI 肉类 ×exp(-λ×T 肉类 )×IR 肉类 ×DF 食入

[0169] Among them: F 肉类 DMI is the fraction of radionuclides present in each kilogram of meat consumed by animals at equilibrium (day / kg fresh); 肉类 is the amount of feed consumed by meat animals (kg dry / day); T 肉类is the average time from collection to consumption of fresh meat (a); IR 肉类 is the annual meat intake (kg fresh / a).

[0170] Public exposure dose from incineration: Calculate the other public exposure dose caused by the incineration of sludge produced by sewage treatment plants.

[0171] If the sludge is incinerated, the radionuclides will be released into the atmosphere, mainly causing external exposure to the air and internal exposure to the public. The calculation method for the air concentration of radionuclides is as follows:

[0172]

[0173] Where: C A is the concentration of radionuclides in the air (Bq / m3); P is the proportion of wind direction blowing in the public direction in a year, which can be conservatively taken as 1; F is the Gaussian diffusion factor at different heights and evaluation distances (m-2), and its value can refer to the IAEA Report No. 19, and the conservative value of the diffusion factor is 0.003m-2 when the emission height is 0-5m and the evaluation distance is 100m; K is the proportion of radionuclides released through dust; u is the average wind speed (m / s); T 处理 is the time from the discharge of waste liquid to the incineration of sludge in the sewage treatment plant (a). The dosage is:

[0174] Dose 外照 =C A ×DF 空气

[0175] Dose 吸入 =C A ×InhR×DF 吸入

[0176] DF 空气 is the dose conversion factor for air immersion (Sv / a per Bq / m3).

[0177] In the application proposal, the parameters related to the radionuclide I-131 used are shown in Table 1, and other general evaluation parameters are shown in Table 2. The values ​​of each evaluation parameter can be adjusted according to the specific object of the evaluation to best suit the actual scenario.

[0178] Nuclide I-131 Decay factor (1 / a) 3.15E+01 Inhalation dose conversion factor (Sv / Bq) 7.40E-09 Ingestion dose conversion factor (Sv / Bq) 2.20E-08 <![CDATA[Air immersion dose conversion factor (Sv / a) / (Bq / m 3 )]]> 5.33E-07 <![CDATA[Surface external exposure dose conversion factor (Sv / a) / (Bq / m 2 )]]> 7.69E-09 <![CDATA[Ground deposition dose conversion factor (Sv / a) / (Bq / m 3 )]]> 3.44E-10 <![CDATA[Concentration factor of crops (Bq / kg 鲜 per Bq / kg 干 )]]> 2.00E-02 <![CDATA[Feed concentration factor (Bq / kg 干 per Bq / kg 干 )]]> 1.00E-01 Milk concentration factor (day / L) 1.00E-02 <![CDATA[Meat concentration factor (day / kg 鲜 )]]> 5.00E-02

[0179] Table 1

[0180]

[0181]

[0182] Table 2

[0183] Pathway to Immigration I-131 Dose of sewage treatment plant workers (Sv / a) 4.55E-10 Public dose from sewage sludge used on agricultural land (Sv / a) 9.60E-11 Public dose from sludge incineration (Sv / a) 1.15E-08

[0184] Table 3

[0185] Finally, the dose calculation results are analyzed to determine the final evaluation results. Referring to Table 3, it can be seen that after the wastewater containing radionuclides is discharged into the sewage pipe, the discharge scenario with the largest public dose is the sludge incineration treatment scenario. The dose calculation result in this method case is 1.15E-08Sv / a, which is used as the final dose calculation result.

[0186] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0187] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0188] Figure 3 FIG. 1 shows a structural block diagram of a radiation dose evaluation device for treating sludge containing radionuclides provided by an embodiment of the present application. Figure 3As shown. The radiation dose evaluation device 300 for treating sludge containing radionuclides in this embodiment may include an activity concentration calculation module 301, a sludge accumulation calculation module 302, a sludge fertilization calculation module 303, a sludge incineration calculation module 304 and an evaluation module 305. Among them, the activity concentration calculation module 301 is used to calculate the activity concentration of radionuclides in the sludge containing radionuclides in the sewage treatment plant after the wastewater containing radionuclides is discharged into the sewage treatment plant, based on the annual discharge of the wastewater containing radionuclides and the annual sludge mass generated by the sewage treatment plant after being discharged into the sewage pipe. The sludge accumulation calculation module 302 is used to calculate the radiation dose caused by sludge accumulation to the workers of the sewage treatment plant based on the external radiation dose of sludge accumulation, air immersion external radiation dose and inhalation internal radiation dose caused by the sludge containing radionuclides to the workers of the sewage treatment plant. The sludge fertilization calculation module 303 is used to calculate the exposure dose caused by sludge fertilization to the public based on the external exposure dose of sludge accumulation, air immersion external exposure dose, inhalation internal exposure dose, crop ingestion internal exposure dose, milk ingestion internal exposure dose and meat ingestion internal exposure dose caused by the sludge containing radionuclides to the public in the scenario where the sludge containing radionuclides is used for agricultural fertilization. The sludge incineration calculation module 304 is used to calculate the exposure dose caused by sludge incineration to the public based on the external exposure dose of air immersion and inhalation internal exposure dose caused by the sludge containing radionuclides to the public in the scenario where the sludge containing radionuclides is incinerated. The evaluation module 305 is used to compare and analyze the exposure doses caused by sludge accumulation, sludge fertilization and sludge incineration respectively, select the treatment scenario with the largest public dose as the evaluation scenario of sludge treatment, and use the exposure dose calculated under the evaluation scenario as the evaluation result.

[0189] It should be noted that part or all of the radiation dose assessment device for treating sludge containing radionuclides in this embodiment may be an application located in a local terminal, or may also be a functional unit such as a plug-in or software development kit (SDK) arranged in an application located in a local terminal, or may also be a processing engine located in a network-side server, or may also be a distributed system located on the network side, and this embodiment does not specifically limit this.

[0190] It is understandable that the application may be a local program (nativeApp) installed on the local terminal, or may be a webpage program (webApp) of a browser on the local terminal, which is not limited in this embodiment.

[0191] Optionally, in a possible implementation of the present embodiment, the activity concentration calculation module 301 can be specifically used to obtain an image frame of the area to be detected corresponding to the point cloud frame of the area to be detected; perform semantic feature extraction processing on the image frame of the area to be detected; and obtain the image semantic feature information based on the result of the semantic feature extraction processing.

[0192] Optionally, in a possible implementation of this embodiment, the sludge accumulation calculation module 302 may be specifically used to calculate the sludge accumulation external radiation dose caused to the workers of the sewage treatment plant according to the activity concentration of the radionuclides in the sludge containing radionuclides and the sludge accumulation external radiation dose conversion factor by using the following formula:

[0193] Dose 堆积外照射 =C 泥 ×ρ×OF 工人 ×DF 堆积外照射

[0194] Among them, ρ is the density of sludge; OF 工人 DF is the proportional factor of annual exposure time; 堆积外照射 The external radiation dose conversion factor for sludge accumulation;

[0195] Based on the activity concentration of radionuclides in the sludge containing radionuclides and the air immersion dose external exposure conversion factor, the air immersion external exposure dose caused to the workers in the sewage treatment plant is calculated by the following formula:

[0196] Dose 空气浸没外照射 =C 空气 ×OF 工人 ×DF 空气浸没

[0197] C 空气1 =C 泥 ×RF

[0198] Among them, C 空气1 is the concentration of radionuclides in the air caused by the resuspension of radionuclides in the sludge treatment scenario; DF 空气浸没 is the air immersion dose external radiation conversion factor; RF is the concentration of suspended particles in the air;

[0199] Based on the activity concentration of radionuclides in the sludge containing radionuclides and the inhalation dose conversion factor, the inhalation internal radiation dose caused to the workers in the sewage treatment plant is calculated by the following formula:

[0200] Dose 吸入 =C 空气1 ×OF 工人 ×InhR×DF 吸入

[0201] Where InhR is the annual air intake; DF 吸入 is the inhalation dose conversion factor;

[0202] The external radiation dose from sludge accumulation, air immersion, and inhalation to the workers in the sewage treatment plant is summed up to:

[0203] Dose 污水处理厂工人 =Dose 堆积外照射 +Dose 空气浸没外照射 +Dose 吸入

[0204] Obtain the radiation doses induced by sludge accumulation to sewage treatment plant workers.

[0205] Optionally, in a possible implementation of this embodiment, the sludge fertilization calculation module 303 may be specifically used to calculate the sludge accumulation external radiation dose caused to the workers of the sewage treatment plant according to the activity concentration of the radionuclides in the sludge containing radionuclides and the sludge accumulation external radiation dose conversion factor by the following formula:

[0206] Dose 堆积外照射 =C 泥 ×ρ×OF 工人 ×OF 堆积外照射

[0207] Among them, ρ is the density of sludge; OF 工人 DF is the proportional factor of annual exposure time; 堆积外照射 The external radiation dose conversion factor for sludge accumulation;

[0208] Based on the activity concentration of radionuclides in the sludge containing radionuclides and the air immersion dose external exposure conversion factor, the air immersion external exposure dose caused to the workers in the sewage treatment plant is calculated by the following formula:

[0209] Dose 空气浸没外照射 =C 空气 ×OF 工人 ×DF 空气浸没

[0210] C 空气1 =C 泥 ×RF

[0211] Among them, C 空气1 is the concentration of radionuclides in the air caused by the resuspension of radionuclides in the sludge treatment scenario; DF 空气浸没 is the air immersion dose external radiation conversion factor; RF is the concentration of suspended particles in the air;

[0212] Based on the activity concentration of radionuclides in the sludge containing radionuclides and the inhalation dose conversion factor, the inhalation internal radiation dose caused to the workers in the sewage treatment plant is calculated by the following formula:

[0213] Dose 吸入 =C 空气1 ×OF 工人 ×InhR×DF 吸入

[0214] Where InhR is the annual air intake; DF 吸入 is the inhalation dose conversion factor;

[0215] The external radiation dose from sludge accumulation, air immersion, and inhalation to the workers in the sewage treatment plant is summed up to:

[0216] Dose 污水处理厂工人 =Dose 堆积外照射 +Dose 空气浸没外照射 +Dose 吸入

[0217] Obtain the radiation doses induced by sludge accumulation to sewage treatment plant workers.

[0218] Optionally, in a possible implementation of this embodiment, the sludge incineration calculation module 304 may be specifically used to calculate the air immersion external radiation dose caused to the public in the incineration scene according to the activity concentration of radionuclides in the air under the incineration scene by the following formula:

[0219] Dose 外照 =C A ×DF 空气

[0220] in, is the concentration of radionuclides in the air; P is the share of wind direction blowing in the public direction in a year; F is the Gaussian diffusion factor at different heights and evaluation distances; K is the proportion of radionuclides released through dust; u is the average wind speed; T 处理 DF is the time from the discharge of waste liquid to the incineration of sludge in the sewage treatment plant; 空气 is the dose conversion factor for air immersion;

[0221] Based on the activity concentration of radionuclides in the air under the incineration scene and the annual air inhalation volume, the inhalation internal exposure dose to the public in the incineration scene is calculated by the following formula:

[0222] Dose 吸入 =C A ×InhR×DF 吸入

[0223] Where InhR is the annual air intake; DF 吸入 is the inhalation dose conversion factor;

[0224] The sum of the external radiation dose caused by air immersion and internal radiation dose caused by incineration to the public is as follows:

[0225] Dose 污泥进行焚烧 =Dose 外照 +Dose 吸入

[0226] Obtain the radiation dose to the public caused by sludge incineration.

[0227] Optionally, in a possible implementation of this embodiment, the nuclide is I-131, and the evaluation parameters related to its properties include: decay factor, with a value of 3.15E+01; inhalation dose conversion factor, with a value of 7.40E-09; ingestion dose conversion factor, with a value of 2.20E-08; air immersion dose conversion factor, with a value of 5.33E-07; ground accumulation dose conversion factor, with a value of 3.44E-10; crop concentration factor, with a value of 2.00E-02; and feed concentration factor, with a value of 1.00E-01.

[0228] Optionally, in a possible implementation of this embodiment, the general evaluation parameters used in the evaluation process include:

[0229] The concentration of suspended particulate matter in the air is 1.00E-07; the annual air intake is 8.40E+03; the annual exposure time ratio during work is 2.28E-01; the time from the harvesting of crops to their consumption is 3.80E-02; the annual intake of crops is 4.10E+02; the proportion of fresh feed consumed by animals is 8.00E-01; the time from the harvesting of feed to the consumption of feed is 2.47E-01; the amount of feed consumed by dairy animals is 1.60E+01; the average time from the collection of fresh milk to its consumption is 3.00E-03; the annual intake of milk is 2.50E+02 ; The amount of feed consumed by meat animals is taken as 1.20E+01; the average time from the collection of fresh meat to its ingestion is taken as 5.50E-02; the annual intake of meat is taken as 1.00E+02; the density of sludge is taken as 1.00E+03; the dilution factor between sludge and uncontaminated soil is taken as 3.00E-02; the conversion factor between dry weight and wet weight of sludge is taken as 4.00E+00; the Gaussian diffusion factor is taken as 3.00E-03; the proportion of radionuclides released through dust is taken as 7.00E-01; the time from sewage discharge to sludge treatment is taken as 1.90E-02; the average wind speed is taken as 2.00E+00.

[0230] In this embodiment, the activity concentration of radionuclides in the sludge containing radionuclides in the sewage treatment plant after the wastewater containing radionuclides is discharged into the sewage treatment plant can be calculated according to the annual discharge amount of the wastewater containing radionuclides and the mass of the sludge containing radionuclides produced annually in the sewage treatment plant after the wastewater containing radionuclides is discharged into the sewage pipe; the radiation dose caused by the sludge accumulation to the workers of the sewage treatment plant is calculated based on the sludge containing radionuclides; the radiation dose caused by the sludge fertilization to the public is calculated for the scenario where the sludge containing radionuclides is used for agricultural fertilization; the radiation dose caused by the sludge incineration to the public is calculated for the scenario where the sludge containing radionuclides is incinerated; the radiation doses caused by the sludge accumulation, sludge fertilization and sludge incineration are compared and analyzed respectively, and the treatment scenario causing the largest dose to the public is selected as the evaluation scenario of the sludge treatment, and the radiation dose calculated under the evaluation scenario is used as the evaluation result. Therefore, a systematic evaluation method for the enrichment scenarios of radionuclides in sewage treatment plant sludge is developed, which clearly gives the public dose caused by sludge containing radionuclides, and provides an evaluation basis for the scientific calculation of the radiation dose caused to sewage treatment plant workers and other public, so as to ensure the safety and health of people in the radiation environment.

[0231] An embodiment of the present application provides a computer-readable storage medium, wherein the storage medium stores at least one instruction, and the at least one instruction is loaded and executed by a processor to implement the method for radiation dose assessment of radionuclide-containing sludge treatment as described above.

[0232] An embodiment of the present application provides an electronic device, which includes a processor and a memory, wherein the memory stores at least one instruction, and the instruction is loaded and executed by the processor to implement the method for radiation dose evaluation of radionuclide-containing sludge treatment as described above.

[0233] In the technical solution of this application, the collection, storage, use, processing, transmission, provision and disclosure of user personal information involved are in compliance with the relevant laws and regulations and do not violate public order and good morals.

[0234] Figure 4 A schematic block diagram of an example electronic device 400 that can be used to implement an embodiment of the present application is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present application described and / or required herein.

[0235] like Figure 4 As shown, the electronic device 400 includes a computing unit 401, which can perform various appropriate actions and processes according to a computer program stored in a read-only memory (ROM) 402 or a computer program loaded from a storage unit 408 into a random access memory (RAM) 403. In the RAM 403, various programs and data required for the operation of the electronic device 400 can also be stored. The computing unit 401, the ROM 402, and the RAM 403 are connected to each other via a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404.

[0236] Multiple components in the electronic device 400 are connected to the I / O interface 405, including: an input unit 406, such as a keyboard, a mouse, etc.; an output unit 407, such as various types of displays, speakers, etc.; a storage unit 408, such as a disk, an optical disk, etc.; and a communication unit 409, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 409 allows the electronic device 400 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0237] The computing unit 401 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the computing unit 401 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, digital signal processors (DSPs), and any appropriate processors, controllers, microcontrollers, etc. The computing unit 401 performs the various methods and processes described above, such as a method for evaluating the radiation dose of a sludge treatment containing radionuclides. For example, in some embodiments, the method for evaluating the radiation dose of a sludge treatment containing radionuclides may be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as a storage unit 408. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 400 via the ROM 402 and / or the communication unit 409. When the computer program is loaded into the RAM 403 and executed by the computing unit 401, one or more steps of the method for evaluating the radiation dose of a sludge treatment containing radionuclides described above may be performed. Alternatively, in other embodiments, the computing unit 401 may be configured in any other appropriate manner (eg, by means of firmware) to execute the method for radiation dose assessment for treatment of sludge containing radionuclides.

[0238] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0239] The program code for implementing the method of the present application can be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that the program code, when executed by the processor or controller, implements the functions / operations specified in the flow chart and / or block diagram. The program code can be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0240] In the context of the present application, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0241] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the computer. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0242] The systems and techniques described herein may be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), and the Internet.

[0243] A computer system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The relationship of client and server is generated by computer programs running on respective computers and having a client-server relationship with each other. The server may be a cloud server, a server of a distributed system, or a server combined with a blockchain.

[0244] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps disclosed in this application can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution disclosed in this application can be achieved, and this document does not limit this.

[0245] The above specific implementations do not constitute a limitation on the protection scope of this application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included in the protection scope of this application.

Claims

1. A method for evaluating radiation dose in treatment of sludge containing radionuclides, characterized in that: include: Based on the annual discharge of wastewater containing radionuclides and the annual mass of sludge containing radionuclides produced by the sewage treatment plant after being discharged into the sewage pipeline, calculate the activity concentration of radionuclides in the sludge containing radionuclides in the sewage treatment plant after the wastewater containing radionuclides is discharged to the sewage treatment plant; Based on the external radiation dose of sludge accumulation, external radiation dose of air immersion and internal radiation dose of inhalation caused by the radioactive nuclide sludge to the workers of the sewage treatment plant, the radiation dose caused by sludge accumulation to the workers of the sewage treatment plant is calculated; In view of the scenario where the radionuclide-containing sludge is used for agricultural fertilization, the radiation dose to the public caused by the sludge fertilization is calculated based on the external radiation dose of sludge accumulation, air immersion external radiation dose, inhalation internal radiation dose, crop ingestion internal radiation dose, milk ingestion internal radiation dose and meat ingestion internal radiation dose caused by the radionuclide-containing sludge in the fertilization scene to the public; In view of the scene of the incineration of the sludge containing radionuclides, the radiation dose caused to the public by the incineration of the sludge containing radionuclides is calculated based on the external radiation dose caused to the public by air immersion and the internal radiation dose caused by the incineration of the sludge containing radionuclides; The radiation doses caused by sludge accumulation, sludge fertilization and sludge incineration were compared and analyzed respectively, and the treatment scenario with the largest public dose was selected as the evaluation scenario of sludge treatment, and the radiation dose calculated under this evaluation scenario was taken as the evaluation result.

2. The method according to claim 1, characterized in that Based on the annual discharge of wastewater containing radionuclides and the mass of sludge containing radionuclides produced annually at the sewage treatment plant after being discharged into the sewage pipe, the activity concentration of radionuclides in the sludge containing radionuclides in the sewage treatment plant after the wastewater containing radionuclides is discharged to the sewage treatment plant is calculated, specifically including: Based on the annual discharge of wastewater containing radionuclides, the annual sludge mass produced by the sewage treatment plant after being discharged into the sewage pipe, and the activity concentration of radionuclides in the wastewater containing radionuclides when it is discharged, the activity concentration of radionuclides in the sludge containing radionuclides in the sewage treatment plant is calculated by the following formula: Among them, C 泥 is the activity concentration of radionuclides in the sludge containing radionuclides; C 池 A is the activity concentration of radionuclides in wastewater containing radionuclides when it is discharged; 池 is the annual discharge of wastewater containing radionuclides; K 污水处理厂 It is the annual sludge mass produced at the sewage treatment plant after being discharged into the sewage pipe.

3. The method according to claim 2, characterized in that Based on the radionuclide-containing sludge, the external radiation dose of sludge accumulation, the external radiation dose of air immersion and the internal radiation dose of inhalation caused to the workers of the sewage treatment plant, the radiation dose caused by sludge accumulation to the workers of the sewage treatment plant is calculated, which specifically includes: Based on the activity concentration of radionuclides in the sludge containing radionuclides and the sludge accumulation external radiation dose conversion factor, the sludge accumulation external radiation dose caused to the workers in the sewage treatment plant is calculated by the following formula: Dose 堆积外照射 =C 泥 ×ρ×OF 工人 ×DF 堆积外照射 Among them, ρ is the density of sludge; OF 工人 DF is the proportional factor of annual exposure time; 堆积外照射 The external radiation dose conversion factor for sludge accumulation; Based on the activity concentration of radionuclides in the sludge containing radionuclides and the air immersion dose external exposure conversion factor, the air immersion external exposure dose caused to the workers in the sewage treatment plant is calculated by the following formula: Dose 空气浸没外照射 =C 空气 ×DF 工人 ×DF 空气浸没 C 空气1 =C 泥 ×RF Among them, C 空气1 is the concentration of radionuclides in the air caused by the resuspension of radionuclides in the sludge treatment scenario; DF 空气浸没 is the air immersion dose external radiation conversion factor; RF is the concentration of suspended particles in the air; Based on the activity concentration of radionuclides in the sludge containing radionuclides and the inhalation dose conversion factor, the inhalation internal radiation dose caused to the workers in the sewage treatment plant is calculated by the following formula: Dose 吸入 =C 空气1 ×OF 工人 ×InhR×DF 吸入 Where InhR is the annual air intake; DF 吸入 is the inhalation dose conversion factor; The external radiation dose from sludge accumulation, air immersion, and inhalation to the workers in the sewage treatment plant is summed up to: Dose 污水处理厂工人 =Dose 堆积外照射 +Dose 空气浸没外照射 +Dose 吸入 Obtain the radiation doses induced by sludge accumulation to sewage treatment plant workers.

4. The method according to claim 2 or 3, characterized in that Based on the external radiation dose of sludge accumulation, air immersion, inhalation, crops, milk and meat caused by the sludge containing radionuclides in the fertilization scene, the radiation dose caused to the public by sludge fertilization is calculated, including: Based on the activity concentration of radionuclides in the sludge containing radionuclides, the sludge accumulation external radiation dose conversion factor and the dilution factor, the sludge accumulation external radiation dose to the public in the fertilization scenario is calculated by the following formula: Dose 堆积外照射 =C 泥 ×ρ×OF 农民 ×DF 堆积外照射 ×f red ×(1-exp(-λ e,s t b )) / λ e,s t b Among them, ρ is the density of sludge; OF 农民 The annual sunlight exposure time for farmers to cultivate crops; DF 堆积外照射 f is the external radiation dose conversion factor for sludge accumulation; red is the dilution factor, which is used to consider the dilution of sludge and uncontaminated soil; e,s is the comprehensive decay rate of the radionuclide; λ is the nuclide decay factor; s is the rate constant of other nuclide removal processes except decay; t b is the accumulation time of radionuclides on the soil surface; Based on the activity concentration of radionuclides in the sludge containing radionuclides and the air immersion dose external exposure conversion factor, the air immersion external exposure dose to the public in the fertilization scenario is calculated using the following formula: Dose 空气浸没外照射 =C 空气2 ×OF×DF 空气浸没 Among them, C 空气2 =C 泥 ×RF×f red ×(1-exp(-λ e,s t b )) / λ e,s t b , is the concentration of radionuclides in the air caused by the resuspension of radionuclides under the fertilization scenario; RF is the concentration of suspended particles in the air; DF 空气浸没 is the air immersion dose external radiation conversion factor; Based on the activity concentration of radionuclides in the sludge containing radionuclides and the concentration factor of radionuclides absorbed by the edible part of the crops from the soil, the inhalation internal exposure dose to the public in the fertilization scenario is calculated by the following formula: Dose 吸入 =C 空气2 ×OF×InhR×DF 吸入 Where InhR is the annual air intake; DF 吸入 is the inhalation dose conversion factor; Based on the activity concentration of radionuclides in the sludge containing radionuclides and the concentration factor of radionuclides absorbed by the edible part of the crops from the soil, the internal radiation dose of crops ingested by the public in the fertilization scenario is calculated by the following formula: Dose 农作物食入 =C 泥 ×ConvF×CF 农作物 ×exp(-λ×T 农作物 )×fred×IR 农作物 ×DF 食入 Among them, CF 农作物 T is the concentration factor of radionuclides absorbed by the edible part of the crop from the soil; 农作物 The time from when crops are collected to when they are eaten; IR 农作物 is the annual food intake of crops; DF 食入 is the ingestion dose conversion factor; ConvF is the conversion factor between sludge dry weight and wet weight; Based on the activity concentration of radionuclides in animal feed, the internal radiation dose to the public from milk ingestion in the fertilization scenario is calculated by the following formula: Dose 奶类食入 =C 饲料 ×F 奶类 ×DMI 奶类 ×exp(-λ×T 奶类 )×IR 奶类 ×DF 食入 Among them, C 饲料 =C 泥 ×CovF×CF 饲料 ×(f p +(1-f p )×exp(-λ×T 饲料 )×fred, is the radionuclide activity concentration in animal feed; CF 饲料 f is the concentration factor of radionuclides absorbed by feed from soil; p The proportion of fresh feed consumed by animals; T 饲料 F is the time between feed harvest and feed consumption; 奶类 DM is the fraction of radionuclides ingested by animals per liter of milk at equilibrium. 奶类 is the amount of feed consumed by dairy animals; T 奶类 is the average time from the collection to the consumption of fresh milk; IR 奶类 is the annual intake of milk; Based on the activity concentration of radionuclides in animal feed, the internal radiation dose to the public from meat ingestion in the fertilization scenario is calculated by the following formula: Dose 肉类食入 =C 饲料 ×F 肉类 ×DMI 肉类 ×exp(-λ×T 肉类 )×IR 肉类 ×DF 食入 Among them, F 肉类 DMI is the fraction of radionuclides present per kilogram of meat consumed by animals at equilibrium. 肉类 is the amount of feed consumed by meat animals; T 肉类 is the average time from the collection to the consumption of fresh meat; IR 肉类 is the annual intake of meat; The sum of the external radiation doses from sludge accumulation, air immersion, inhalation, ingestion of crops, ingestion of milk, and ingestion of meat to the public in the fertilizer application scenario is as follows: Dose 污泥用于农业用地 =Dose 堆积外照射 +Dose 空气浸没外照射 +Dose 吸入 +Dose 农作物食入 +Dose 奶类食入 +Dose 肉类食入 Obtain the radiation dose to the public caused by sewage sludge fertilization.

5. The method according to claim 1, characterized in that Based on the air immersion external radiation dose and inhalation internal radiation dose caused by the sludge containing radionuclides to the public in the incineration scene, the radiation dose caused by sludge incineration to the public is calculated, including: According to the activity concentration of radionuclides in the air under the incineration scene, the air immersion external radiation dose caused to the public in the incineration scene is calculated by the following formula: Dose 外照 =C A ×DF 空气 in, is the concentration of radionuclides in the air; P is the share of wind direction blowing in the public direction in a year; F is the Gaussian diffusion factor at different heights and evaluation distances; K is the proportion of radionuclides released through dust; u is the average wind speed; T 处理 DF is the time from the discharge of waste liquid to the incineration of sludge in the sewage treatment plant; 空气 is the dose conversion factor for air immersion; Based on the activity concentration of radionuclides in the air under the incineration scene and the annual air inhalation volume, the inhalation internal exposure dose to the public in the incineration scene is calculated by the following formula: Dose 吸入 =C A ×InhR×DF 吸入 Where InhR is the annual air intake; DF 吸入 is the inhalation dose conversion factor; The sum of the external radiation dose caused by air immersion and internal radiation dose caused by incineration to the public is as follows: Dose 污泥进行焚烧 =Dose 外照 +Dose 吸入 Obtain the radiation dose to the public caused by sludge incineration.

6. The method according to any one of claims 1 to 5, characterized in that: The nuclide is I-131, and the evaluation parameters related to its properties include: The decay factor is 3.15E+01; the inhalation dose conversion factor is 7.40E-09; the ingestion dose conversion factor is 2.20E-08; the air immersion dose conversion factor is 5.33E-07; the ground accumulation dose conversion factor is 3.44E-10; the crop concentration factor is 2.00E-02; and the feed concentration factor is 1.00E-01.

7. The method according to any one of claims 1 to 5, characterized in that: Common evaluation parameters used in the evaluation process include: The concentration of suspended particulate matter in the air is 1.00E-07; the annual air intake is 8.40E+03; the annual exposure time ratio during work is 2.28E-01; the time from the harvesting of crops to their consumption is 3.80E-02; the annual intake of crops is 4.10E+02; the proportion of fresh feed consumed by animals is 8.00E-01; the time from the harvesting of feed to the consumption of feed is 2.47E-01; the amount of feed consumed by dairy animals is 1.60E+01; the average time from the collection of fresh milk to its consumption is 3.00E-03; the annual intake of milk is 2.50E+02 ; The amount of feed consumed by meat animals is taken as 1.20E+01; the average time from the collection of fresh meat to its ingestion is taken as 5.50E-02; the annual intake of meat is taken as 1.00E+02; the density of sludge is taken as 1.00E+03; the dilution factor between sludge and uncontaminated soil is taken as 3.00E-02; the conversion factor between dry weight and wet weight of sludge is taken as 4.00E+00; the Gaussian diffusion factor is taken as 3.00E-03; the proportion of radionuclides released through dust is taken as 7.00E-01; the time from sewage discharge to sludge treatment is taken as 1.90E-02; the average wind speed is taken as 2.00E+00.

8. A radiation dose evaluation device for treating sludge containing radionuclides, characterized in that: include: The activity concentration calculation module is used to calculate the activity concentration of radionuclides in the sludge containing radionuclides in the sewage treatment plant after the wastewater containing radionuclides is discharged into the sewage pipe, based on the annual discharge of the wastewater containing radionuclides and the annual mass of sludge generated in the sewage treatment plant after the wastewater containing radionuclides is discharged into the sewage pipe; A sludge accumulation calculation module is used to calculate the radiation dose caused by sludge accumulation to the workers of the sewage treatment plant based on the sludge containing radionuclides, the external radiation dose caused by sludge accumulation, the external radiation dose caused by air immersion, and the internal radiation dose caused by inhalation to the workers of the sewage treatment plant; A sludge fertilization calculation module is used to calculate the radiation dose caused to the public by sludge fertilization based on the external radiation dose of sludge accumulation, air immersion external radiation dose, inhalation internal radiation dose, crop ingestion internal radiation dose, milk ingestion internal radiation dose and meat ingestion internal radiation dose caused by the sludge containing radionuclides to the public, in view of the scenario where the sludge containing radionuclides is used for agricultural fertilization; A sludge incineration calculation module, for calculating the radiation dose caused to the public by the sludge incineration, based on the scene of the sludge containing radionuclides being incinerated, and based on the external radiation dose caused to the public by the air immersion and the internal radiation dose caused by the sludge containing radionuclides; The evaluation module is used to compare and analyze the radiation doses caused by sludge accumulation, sludge fertilization, and sludge incineration, select the treatment scenario with the largest public dose as the evaluation scenario of sludge treatment, and use the radiation dose calculated under the evaluation scenario as the evaluation result.

9. A non-transitory computer-readable storage medium storing computer instructions, wherein: The computer instructions are used to cause the computer to execute the method according to any one of claims 1-7.

10. A computer program product, comprising a computer program, which, when executed by a processor, implements the method according to any one of claims 1 to 7.

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