Radioactive wastewater filtering and purifying equipment for nuclear medicine department

Abstract

The utility model discloses radioactive wastewater filtering and purifying equipment for a nuclear medicine department, which belongs to the technical field of medical wastewater treatment and comprises a filtering and purifying equipment body and a multi-layer composite filtering system arranged in the filtering and purifying equipment body. The three filter layers are respectively a primary filter layer, a chemical adsorption layer and an ion exchange layer from top to bottom, a buffer assembly and a precipitation purification system are arranged on the outer side of each filter layer and are arranged at the bottom of the filtration and purification equipment body, and the multi-layer filtration system is arranged, so that suspended particles and macromolecular pollutants can be removed; organic pollutants and part of radionuclides in the wastewater are adsorbed, radioactive ions are selectively removed, and harmful elements in the wastewater are removed, so that the wastewater can reach the emission standard.

Description

Technical Field

[0001] This utility model belongs to the field of medical wastewater treatment technology, and in particular to a radioactive wastewater filtration and purification device for nuclear medicine. Background Technology

[0002] Nuclear medicine radioactive wastewater refers to wastewater containing radioactive substances generated during nuclear medicine diagnosis, research, or drug preparation. Its characteristics and hazards are as follows: Diagnosis and Treatment: Patients are injected with or ingest radioactive drugs (such as...). I. Treatment for hyperthyroidism After imaging examinations, undecayed radioactive isotopes are present in excrement (urine, saliva). Laboratory procedures include: radioactive isotope labeling experiments, drug synthesis (such as...). Wastewater from cleaning processes and discarded reagents generated during production. Equipment maintenance: Wastewater from rinsing PET / CT and other imaging equipment, and wastewater from cleaning radioactive contamination protective equipment.

[0003] Wastewater generated by nuclear medicine departments often contains radioactive isotopes (such as iodine-131 and technetium-99m) and chemical pollutants. Direct discharge of these pollutants would pose serious threats to the environment and human health. Current technologies for radioactive wastewater treatment mostly employ single adsorption or sedimentation methods, which suffer from low purification efficiency, inability to handle multiple pollutants, and insufficient automation. For example, traditional adsorption methods use activated carbon or zeolite as adsorbents to remove some radioactive ions, but their adsorption capacity is limited and easily saturated, making them unsuitable for wastewater with high activity or complex composition. Furthermore, adsorbent regeneration is costly. Therefore, there is an urgent need for a highly efficient, safe radioactive wastewater treatment system with intelligent control capabilities.

[0004] The purpose of this invention is to provide a radioactive wastewater filtration and purification device for nuclear medicine departments to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to provide a radioactive wastewater filtration and purification device for nuclear medicine departments to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a radioactive wastewater filtration and purification device for nuclear medicine departments, comprising...

[0007] The main body of the filtration and purification equipment;

[0008] A multi-layer composite filtration system is installed inside the main body of the filtration and purification equipment. The multi-layer composite filtration system includes three filtration layers, which are, from top to bottom, a primary filtration layer, a chemical adsorption layer, and an ion exchange layer. Each filtration layer is provided with a buffer component on its outer side.

[0009] A sedimentation and purification system is installed at the bottom of the filtration and purification equipment. The sedimentation and purification system includes an ultraviolet lamp for ultraviolet disinfection of radioactive wastewater. The bottom of the ultraviolet lamp is equipped with a motion component for controlling the ultraviolet lamp to make multi-angle adjustments.

[0010] Furthermore, the buffer assembly includes several fixed disks fixedly installed inside the filter purification device body, several sliding columns are evenly arranged on the top of the fixed disks, an installation disk is provided on the outer side of each filter layer, and a limit block is provided on the top of the installation disk.

[0011] Furthermore, all three filter layers are slidably connected to the outside of the sliding column, and a spring is sleeved on the outside of the sliding column. One end of the spring is connected to the fixed plate, and the other end is connected to the filter layer.

[0012] Furthermore, the motion component includes mounting boxes symmetrically installed on both sides of the filter purification device body. The mounting boxes are connected to the filter purification device body, and a motor is fixedly installed inside the mounting boxes. The output end of the motor is connected to a first sector gear.

[0013] Furthermore, the first sector gear is meshed with a second sector gear, a mounting block is provided on the outside of the second sector gear, a through rotating column is provided inside the mounting block, the end of the rotating column is rotatably connected to the bottom of the mounting box, and a baffle is provided on the outside of the ultraviolet lamp.

[0014] Furthermore, a sewage inlet is provided on the top of the filter and purification device body, a controller is also provided on the top of the filter and purification device body, a water outlet is provided on one side of the filter and purification device body, and a solenoid valve is provided on the outside of the water outlet.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This utility model, by setting up a multi-layer filtration system, has the advantages of removing suspended particles and macromolecular pollutants, adsorbing organic pollutants and some radionuclides in wastewater, selectively removing radioactive ions, and removing harmful elements in wastewater, so that it can meet the discharge standards.

[0017] 2. This utility model, by setting up an ultraviolet lamp and a moving component, uses a motor to drive the ultraviolet lamp to rotate, thereby changing the irradiation direction of the ultraviolet lamp. This has the advantage of greatly increasing the disinfection range of the ultraviolet lamp, resulting in a better sterilization effect. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the multi-layer filtration system in this utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the mounting box in this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the baffle in this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] In the picture:

[0025] 1. Filtration and purification equipment body; 2. Wastewater inlet; 3. Controller; 4. Mounting box; 5. Outlet; 6. Solenoid valve; 7. Mounting plate; 8. Sliding column; 9. Primary filter layer; 10. Baffle; 11. Chemical adsorption layer; 12. Ion exchange layer; 13. Limiting block; 14. Spring; 15. Fixed plate; 16. Motor; 17. First sector gear; 18. Second sector gear; 19. Mounting block; 20. Rotating column; 21. Ultraviolet lamp. Detailed Implementation

[0026] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0027] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0028] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0029] Please see Figures 1 to 4As shown, a radioactive wastewater filtration and purification device for nuclear medicine includes a filtration and purification device body 1, a wastewater inlet 2 at the top of the filtration and purification device body 1, a controller 3 at the top of the filtration and purification device body 1, a water outlet 5 on one side of the filtration and purification device body 1, and a solenoid valve 6 outside the water outlet 5. The controller 3 is electrically connected to the motor 16 and the solenoid valve 6.

[0030] A multi-layer composite filtration system is installed inside the main body 1 of the filtration and purification equipment. The system comprises three filtration layers: a primary filtration layer 9 (composed of a stainless steel mesh with a pore size ≤ 50 μm and a quartz sand layer, used to remove suspended particles and large molecular pollutants); a chemical adsorption layer 11 filled with a composite adsorbent of activated carbon and modified zeolite, which adsorbs organic pollutants and some radionuclides from the wastewater; and an ion exchange layer 12 filled with cation exchange resin and specific chelating resin (such as a Ti-based adsorbent for technetium-99m) to selectively remove radioactive ions. Each filter layer is equipped with a buffer assembly on its outer side. All three filter layers are slidably connected to the outer side of the sliding column 8. A spring 14 is sleeved on the outer side of the sliding column 8. One end of the spring 14 is connected to the fixed plate 15, and the other end is connected to the filter layer. The buffer assembly includes several fixed plates 15 fixedly installed inside the filter purification equipment body 1. Several sliding columns 8 are evenly arranged on the top of the fixed plate 15. An installation plate 7 is provided on the outer side of each filter layer. A limit block 13 is provided on the top of the installation plate 7. The limit block 13 can be rotated. By rotating it to the top of the filter layer, the filter layer can be simply limited and fixed.

[0031] A sedimentation and purification system is located at the bottom of the filter purification equipment body 1. The sedimentation and purification system includes an ultraviolet lamp 21 for ultraviolet disinfection of radioactive wastewater. The ultraviolet lamp with a wavelength of 254nm kills microorganisms. A motion component for controlling the ultraviolet lamp 21 to make multi-angle adjustments is set at the bottom of the ultraviolet lamp 21. The motion component includes a mounting box 4 symmetrically installed on both sides of the filter purification equipment body 1. The mounting box 4 is connected to the filter purification equipment body 1. A motor 16 is fixedly installed in the mounting box 4. The output end of the motor 16 is connected to a first sector gear 17. The first sector gear 17 is meshed with a second sector gear 18. A mounting block 19 is set on the outside of the second sector gear 18. A through rotating column 20 is set in the mounting block 19. The end of the rotating column 20 is rotatably connected to the bottom of the mounting box 4. A baffle 10 is set on the outside of the ultraviolet lamp 21. A sedimentation tank is set at the bottom of the filter purification equipment body (not shown in the figure). The outlet 5 is connected to the sedimentation tank.

[0032] The motor 16 and the solenoid valve 6 are both existing technologies. Their working principles, dimensions and models are not related to the problems solved by this application, so they will not be described in detail. The control method of this utility model is controlled by the controller 3. The control circuit of the controller 3 can be implemented by those skilled in the art through simple programming. The power supply is also common knowledge in the art. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.

[0033] Working principle: Radioactive wastewater from the nuclear medicine department is introduced into the filtration and purification equipment body 1 through the wastewater inlet 2. The wastewater then passes through the primary filtration layer 9, the chemical adsorption layer 11, and the ion exchange layer 12 for filtration and adsorption, and then enters the sedimentation tank. During this process, the impact force of the wastewater on the filtration layer is buffered by the spring 14 on the outside of the sliding column 8. The motor 16 of the mounting box 4 starts and drives the first sector gear 17 to rotate, which in turn drives the second sector gear 18 that meshes with it to rotate, thereby driving the mounting block 19 to rotate, which in turn drives the rotating column 20 to rotate, thereby driving the ultraviolet lamp 21 to rotate, thus performing a more comprehensive sterilization. In addition, the baffle 10 is to prevent wastewater from splashing onto the ultraviolet lamp 21.

[0034] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nuclear medicine department radioactive waste water filtration and purification apparatus, characterized by: The utility model relates to a filter purification equipment body (1) is provided with, Multi -layer composite filter system is arranged in the filter purification equipment body (1) inside, the multi -layer composite filter system includes three layers of filter layer, three layers of filter layer from top to bottom respectively primary filter layer (9), chemical adsorption layer (11), ion exchange layer (12), and the buffer assembly is provided outside single the filter layer, Precipitation purification system is arranged at the bottom of filter purification equipment body (1), and the precipitation purification system includes ultraviolet lamp (21) for carrying out ultraviolet disinfection to radioactive wastewater, and the ultraviolet lamp (21) bottom is provided with motion assembly for controlling ultraviolet lamp (21) to carry out multi -angle adjustment. The buffer assembly includes a plurality of fixedly installed fixed disc (15) in the filter purification equipment body (1), the fixed disc (15) top is uniformly provided with a plurality of sliding columns (8), and the outer side of single filter layer is provided with mounting disc (7), and the mounting disc (7) top is arranged in the limiting block (13).

2. The radioactive waste water filtering and purifying apparatus for nuclear medicine department according to claim 1, characterized in that: Three layers of filter layer are all slidingly connected outside the sliding column (8), the sliding column (8) outside is sleeved with spring (14), one end of the spring (14) is connected with the fixed disc (15), and the other end is connected with the filter layer.

3. The nuclear medicine department radioactive wastewater filtering and purifying device according to claim 2, characterized in that: The motion assembly includes the installation box (4) symmetrically installed on both sides of the filter purification equipment body (1), the installation box (4) is communicated with the filter purification equipment body (1), the motor (16) is fixedly installed in the installation box (4), and the output end of the motor (16) is connected with the first sector gear (17).

4. The nuclear medicine department radioactive wastewater filtering and purifying device according to claim 1, characterized in that: The first sector gear (17) is connected with the second sector gear (18), the second sector gear (18) outside is provided with the mounting block (19), the mounting block (19) is provided with the through rotating column (20), the rotating column (20) end is rotatably connected in the installation box (4) inner bottom, the ultraviolet lamp (21) outside is provided with the baffle (10).

5. The nuclear medicine department radioactive wastewater filtration and purification apparatus according to claim 4, characterized in that: The filter purification equipment body (1) top is provided with sewage inlet (2), and the filter purification equipment body (1) top is also provided with controller (3), and the filter purification equipment body (1) one side is provided with water outlet (5), and the water outlet (5) outside is provided with electromagnetic valve (6).

6. The nuclear medicine department radioactive wastewater filtration and purification apparatus according to claim 1, characterized in that: ​

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