Radioactive nuclear factor processing device

Abstract

The utility model relates to the field of water quality treatment, in particular to a radioactive nuclear factor treatment device which comprises a sealed tank body, a waste liquid reaction cavity and a standing buffer cavity are formed in the tank body, a filtering membrane layer is arranged between the waste liquid reaction cavity and the standing buffer cavity, and a liquid inlet pipe and a reagent feeding pipe are arranged at the upper end of the tank body; the liquid inlet pipe and the reagent feeding pipe are communicated with the waste liquid reaction cavity; a water outlet pipe and a waste pipe are arranged below the tank body, the water outlet pipe is communicated with the upper part of the standing buffer cavity, and the waste pipe is communicated with the lower part of the standing buffer cavity; by arranging the waste liquid reaction cavity and the standing buffer storage cavity, distributed treatment can be carried out on waste water containing radioactive nuclein factors, the waste water can reach the emission standard through chemical reaction and physical precipitation, chemical and physical treatment is completed in one device, the radioactive nuclein factors are separated, emission is reduced, and the waste water containing the radioactive nuclein factors can be recycled. And the equipment cost can be reduced.

Description

Technical Field

[0001] This application relates to the field of water quality treatment, and particularly to a device for treating radionuclide factors. Background Art

[0002] With the commencement of the decommissioning work of nuclear facilities in the nuclear industry system of our country and the extensive application of nuclear technology, the treatment of radioactive wastewater has become particularly necessary and urgent. Especially during maintenance, the system management may be cleaned, and the cleaning waste liquid needs to be filtered first and then deionized after treatment.

[0003] Compounds such as hydroxides, carbonates, and phosphates of radionuclides in wastewater are mostly insoluble, so they can be removed during treatment. The purpose of chemical treatment is to transfer and concentrate the radionuclides in the wastewater into a small volume of sludge, so that the remaining wastewater after sedimentation has very little radioactivity, thus meeting the discharge standards.

[0004] It is necessary to treat weakly radioactive water into domestic drinking water for preparing drinking water in nuclear contaminated areas. Currently, the water purification devices of the existing technologies have complex structures, high costs, and incomplete purification, and often cannot meet the standards of drinking water.

[0005] Therefore, it is necessary to design a radionuclide factor treatment device that is efficient, simple, and low-cost. Utility Model Content

[0006] Based on this, in view of the deficiencies in the traditional nuclear waste liquid treatment process, it is necessary to propose a radionuclide factor treatment device.

[0007] This application provides a radionuclide factor treatment device, including a sealed tank body. A waste liquid reaction chamber and a static buffer chamber are formed inside the tank body. A filter membrane layer is provided between the waste liquid reaction chamber and the static buffer chamber. An inlet pipe and a reagent feeding pipe are arranged at the upper end of the tank body, and the inlet pipe and the reagent feeding pipe are connected to the waste liquid reaction chamber; a water outlet pipe and a waste pipe are arranged below the tank body, the water outlet pipe is connected to the upper part of the static buffer chamber, and the waste pipe is connected to the lower part of the static buffer chamber;

[0008] A protective cover is arranged at the top of the tank body, the inlet pipe and the material pipe are inside the protective cover, and a reaction chamber detection device and a pressure adjustment device are also arranged inside the protective cover;

[0009] A bottom detection device is also arranged at the bottom of the tank body.

[0010] Preferably, the filter membrane layer includes a filter plate and filter elements arranged on the filter plate.

[0011] Preferably, a plurality of communication holes are provided on the filter plate, and each communication hole connects the waste liquid reaction chamber and the static buffer chamber.

[0012] Preferably, a plurality of fixing seats for fixing the filter elements are further provided on the filter plate, and each filter element is located in a corresponding fixing seat.

[0013] Preferably, the upper end of each fixing seat is connected to the communication hole, and a drain port is provided at the lower end of each fixing seat.

[0014] Preferably, the reaction chamber detection device includes a reaction chamber temperature detector and a reaction chamber pressure gauge.

[0015] Preferably, the pressure regulating device is a breathing valve, and the breathing valve is used to stabilize the pressure in the waste liquid reaction chamber.

[0016] Preferably, a ladder is provided on one side of the protective cover, and the bottom detection device includes a bottom temperature detector and a bottom pressure gauge.

[0017] Preferably, a liquid level monitoring device is further provided on the tank body. The liquid level monitoring device includes a liquid level display tube and an upper connecting tube and a lower connecting tube provided at both ends of the liquid level display tube. The upper connecting tube and the lower connecting tube are respectively connected to the tank body.

[0018] Preferably, the liquid level display tube is made of a transparent material.

[0019] Technical advantages of the present application:

[0020] 1. By providing a waste liquid reaction chamber and a static buffer chamber, the present utility model can perform distributed treatment on wastewater containing radionuclide factors. Through chemical reactions and then physical precipitation, the discharge standard can be achieved.

[0021] 2. By completing chemical and physical treatments in one device to achieve separation and reduction of radionuclide factors in emissions, the cost of the device can be reduced.

[0022] 3. By providing a reaction chamber detection device to monitor the status of the upper waste liquid reaction chamber and a bottom detection device to monitor the precipitation status of the static buffer chamber, the status of the waste liquid in the device can be controlled in real time, preventing leakage and abnormal conditions, meeting the requirements of stable control, and maintaining overall safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of this application are used to provide a further understanding of this application, making other features, objectives, and advantages of this application more obvious. The schematic embodiments of the drawings of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application.

[0024] Figure 1 The three-dimensional structure diagram of the radionuclide factor processing device provided by an embodiment of the present application.

[0025] Figure 2 The front view schematic diagram of the radionuclide factor processing device provided by an embodiment of the present application.

[0026] Figure 3 The top view schematic diagram of the radionuclide factor processing device provided by an embodiment of the present application.

[0027] Figure 4 The cross-sectional schematic diagram of the radionuclide factor processing device provided by another embodiment of the present application.

[0028] Figure 5 The structural schematic diagram of the filter membrane layer provided by another embodiment of the present application.

[0029] Reference numerals: waste liquid reaction chamber 100; static buffer chamber 200; tank body 1; protective cover 11; liquid inlet pipe 12; reagent feeding pipe 13; water outlet pipe 14; waste pipe 15; filter membrane layer 2; communication hole 20; filter plate 21; filter element 22; fixing seat 23; drain port 24; ladder 3; reaction chamber detection device 4; reaction chamber temperature detector 41; reaction chamber pressure gauge 42; pressure adjustment device 5; bottom detection device 6; bottom temperature detector 61; bottom pressure gauge 62; liquid level monitoring device 7; liquid level display tube 71; upper connecting pipe 72; lower connecting pipe 73. Detailed implementation manners

[0030] In order to more clearly illustrate the overall concept of the present invention, the following will be further described in detail by way of examples in combination with the accompanying drawings of the specification.

[0031] It should be noted that many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention may be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0032] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and the like should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication between two elements or the interaction relationship between two elements. However, indicating a direct connection means that there is no connection relationship constructed by an excessive structure between the two connected main bodies, and only a connection structure is used to connect them into a whole. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] As shown Figures 1 to 5 in the figure, the present application provides a radioactive nuclide factor treatment device for treating nuclear waste liquid with radioactive nuclide factors so that after meeting the discharge standards, it is further processed.

[0034] In an embodiment of the present application

[0035] As shown Figure 1 and Figure 5 in the figure; a radioactive nuclide factor treatment device includes a sealed tank body 1. A waste liquid reaction cavity 100 and a static storage cavity 200 are formed inside the tank body 1. A filter membrane layer 2 is provided between the waste liquid reaction cavity 100 and the static storage cavity 200. In this device, two operation steps are applied in one device, reducing the cost of the device.

[0036] First, the nuclear waste liquid undergoes a preliminary reaction with chemical components in the liquid reaction cavity 100, then passes through the filter membrane layer 2 for adsorption and filtration, and finally undergoes physical precipitation through the static storage cavity 200 to achieve the effect of solid-liquid separation. Finally, it is discharged after detection and enters the next step.

[0037] The specific structure of the present utility model is as follows. An inlet pipe 12 and a reagent feeding pipe 13 are provided at the upper end of the tank body 1. The inlet pipe 12 and the reagent feeding pipe 13 are connected to the waste liquid reaction cavity 100. A water outlet pipe 14 and a waste pipe 15 are provided below the tank body 1. The water outlet pipe 14 is connected to the upper part of the static storage cavity 200, and the waste pipe 15 is connected to the lower part of the static storage cavity 200. The nuclear waste liquid is added into the waste liquid reaction cavity 100 through the inlet pipe 12, and at the same time, the chemicals required for the reaction are added into the waste liquid reaction cavity 100 through the reagent feeding pipe 13. Precipitants such as iron salts, aluminum salts, phosphates, and soda are most commonly used. Special chemical precipitants are required for radioactive nuclides such as cesium, ruthenium, and iodine that are difficult to remove. For example, cesium can be removed by coprecipitation with ferrocyanide iron and ferrocyanide copper.

[0038] The treated nuclear waste liquid is discharged through the water outlet pipe 14, and the waste pipe 15 is used to discharge the bottom waste liquid containing precipitated substances. As high-concentration nuclear waste, it is subjected to centralized or buried treatment.

[0039] As shown Figures 2 - 3 in the figure: A protective cover 11 is provided at the top of the tank body 1. The inlet pipe 12 and the material pipe 13 are located inside the protective cover 11. A ladder 3 is provided on one side of the protective cover 11. A reaction cavity detection device 4 and a pressure adjustment device 5 are also provided inside the protective cover 11. By arranging the inlet pipe 12 and the reagent feeding pipe 13 inside the tank body, and through the provided ladder 3, it is possible to reach the top to repair and maintain the pipelines and equipment at the top.

[0040] The reaction chamber detection device 4 involved in the present utility model includes a reaction chamber temperature detector 41 and a reaction chamber pressure gauge 42. The pressure adjustment device 5 is a breathing valve, and the breathing valve is used to stabilize the pressure of the waste liquid reaction chamber 100. By setting the breathing valve 5, external air can be inhaled for supplementation when the pressure is insufficient, and excess gas can be discharged when the internal pressure is high.

[0041] The temperature and pressure of the waste liquid reaction chamber 100 are detected by the provided reaction chamber temperature detector 41 and reaction chamber pressure gauge 42, and the chemical reaction process is monitored at any time to ensure safety and stability.

[0042] A bottom detection device 6 is further provided at the bottom of the tank body 1 near the ladder 3. The bottom detection device 6 includes a bottom temperature detector 61 and a bottom pressure gauge 62. A bottom temperature detector 61 and a bottom pressure gauge 62 are provided on one side of the static buffer chamber 200 to monitor the temperature and pressure inside the static buffer chamber 200 and monitor the internal state.

[0043] As Figures 4 - 5 shown, another important structure in the present utility model is the filter membrane layer 2. The filter membrane layer 2 divides the tank body 1 into two spaces, namely the waste liquid reaction chamber 100 and the static buffer chamber 200, and different operation steps are respectively carried out in the two different chambers.

[0044] Specifically, the filter membrane layer 2 includes a filter plate 21 and filter elements 22 arranged on the filter plate 21. A plurality of communication holes 20 are provided on the upper surface of the filter plate 21, and each communication hole 20 communicates with the waste liquid reaction chamber 100 and the static buffer chamber 200. At the same time, the filter elements 22 are arranged in the communication holes 20 to adsorb and filter impurities and particulate matters in the upper waste liquid.

[0045] In order to further fix the filter elements 22, a plurality of fixing seats 23 for fixing the filter elements 22 are also provided on the filter plate 21. Each filter element 22 is located in the corresponding fixing seat 23. The upper end of each fixing seat 23 is connected to the communication hole 20, and a drain port 24 is provided at the lower end of each fixing seat 23.

[0046] In order to better observe and monitor the liquid state inside the tank device, a liquid level monitoring device 7 is also provided on the tank body 1. The liquid level monitoring device 7 includes a liquid level display tube 71 and upper connecting tubes 72 and lower connecting tubes 73 arranged at both ends of the liquid level display tube 71. The upper connecting tube 72 and the lower connecting tube 73 are respectively connected to the tank body 1. The liquid level display tube 71 is made of a transparent material, and the liquid level display tube 71 can be transparent plastic or transparent glass.

[0047] In this application, by setting up a waste liquid reaction chamber and a static buffer chamber, the wastewater containing radionuclide factors can be processed in a distributed manner. Through chemical reactions and then physical precipitation, the discharge standard can be achieved. The utility model completes chemical and physical treatments within one device to separate radionuclide factors and reduce emissions, which can reduce the cost of the device. By setting up a reaction chamber detection device to monitor the state of the upper waste liquid reaction chamber and a bottom detection device to monitor the precipitation state of the static buffer chamber, the state of the waste liquid in this device can be controlled in real time to prevent leakage and abnormal states, meeting the requirements of stable control and maintaining overall safety.

[0048] The technical features of the above-described embodiments can be combined arbitrarily, and there is no limitation on the execution order of each method step. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0049] The above-described embodiments merely represent several implementation manners of this application. The description is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of this application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of this application should be subject to the appended claims.

Claims

1. A radionuclide factor processing device, characterized in that: The invention comprises a sealed tank body (1), wherein a waste liquid reaction chamber (100) and a static buffer chamber (200) are formed in the tank body (1), a filter membrane layer (2) is arranged between the waste liquid reaction chamber (100) and the static buffer chamber (200), and a liquid inlet pipe (12) and a reagent feeding pipe (13) are arranged at the upper end of the tank body (1), and the liquid inlet pipe (12) and the reagent feeding pipe (13) are connected to the waste liquid reaction chamber (100); a water outlet pipe (14) and a waste pipe (15) are arranged at the lower part of the tank body (1), and the water outlet pipe (14) is connected to the upper part of the static buffer chamber (200), and the waste pipe (15) is connected to the lower part of the static buffer chamber (200); A protective cover (11) is provided on the top of the tank body (1), the liquid inlet pipe (12) and the reagent feeding pipe (13) are located inside the protective cover (11), and a reaction chamber detection device (4) and a pressure regulating device (5) are also provided inside the protective cover (11); The bottom of the tank body (1) is also provided with a bottom detection device (6).

2. The radionuclide factor treatment device according to claim 1, characterized in that: The filter membrane layer (2) comprises a filter plate (21) and a filter element (22) arranged on the filter plate (21).

3. The radionuclide factor treatment device according to claim 2, characterized in that: The filter plate (21) is provided with a plurality of communication holes (20), each communication hole (20) being connected to the waste liquid reaction chamber (100) and the static buffer chamber (200).

4. The radionuclide factor treatment device according to claim 3, characterized in that: A plurality of fixing seats (23) for fixing the filter core (22) are also provided on the filter plate (21), and each filter core (22) is located in a corresponding fixing seat (23).

5. The radionuclide factor treatment device according to claim 4, characterized in that: The upper end of each fixing seat (23) is connected to the communication hole (20), and the lower end of each fixing seat (23) is provided with a drainage port (24).

6. The radionuclide factor treatment device according to claim 1, characterized in that: The reaction chamber detection device (4) comprises a reaction chamber temperature detection machine (41) and a reaction chamber pressure detection gauge (42).

7. The radionuclide factor treatment device according to claim 6, characterized in that: The pressure regulating device (5) is a breathing valve, and the breathing valve is used to stabilize the pressure of the waste liquid reaction chamber (100).

8. The radionuclide factor treatment device according to claim 7, characterized in that: A ladder (3) is provided on one side of the protective cover (11), and the bottom detection device (6) comprises a bottom temperature detection machine (61) and a bottom pressure detection gauge (62).

9. The radionuclide factor treatment device according to claim 1, characterized in that: The tank body (1) is also provided with a liquid level monitoring device (7), the liquid level monitoring device (7) comprising a liquid level display tube (71) and an upper connecting tube (72) and a lower connecting tube (73) provided at both ends of the liquid level display tube (71), the upper connecting tube (72) and the lower connecting tube (73) being connected to the tank body (1) respectively.

10. The radionuclide factor treatment device according to claim 9, characterized in that: The liquid level display tube (71) is made of a transparent material.

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