A cleaning device for producing adsorbing material for radioactive waste water treatment

Abstract

This utility model discloses a cleaning device for the production of adsorbent materials for radioactive wastewater treatment, comprising a cleaning unit and a filtration unit. The cleaning unit includes an automatic feeder, a first cleaning column, a first centrifuge, a second cleaning column, a second centrifuge, a dryer, and a wastewater tank. The waste liquid outlets of the first cleaning column, the first centrifuge, and the second centrifuge are all connected to the inlet of the wastewater tank. The filtration unit includes a multi-media filter, a security filter, a reverse osmosis membrane module, and a circulating water tank, arranged sequentially in the flow direction of wastewater filtration. The high-efficiency cleaning and wastewater recycling device for adsorbent material production provided by this utility model reduces the cleaning cycle of production, reduces water waste, and improves the economic and environmental benefits of the production process.

Description

Technical Field

[0001] This utility model relates to the field of adsorption material production equipment, specifically to a cleaning device for the production of adsorption materials for radioactive wastewater treatment. Background Technology

[0002] In the nuclear industry, nuclear wastewater treatment is a crucial and urgent task, and adsorbent materials play a vital role. Due to their superior adsorption properties, adsorbent materials are widely used in removing radioactive contaminants from nuclear wastewater. By selecting suitable and highly selective adsorbent materials, radioactive elements in nuclear wastewater can be efficiently removed, significantly reducing radioactivity levels and effectively mitigating environmental pollution risks, thus providing strong support for the sustainable development of the nuclear industry.

[0003] Typically, after the adsorbent material is produced, its surface often bears various residues. To ensure stable adsorption performance and reliable product quality, thorough cleaning is necessary to remove these impurities. However, currently, the cleaning process in the large-scale production of adsorbent materials faces several pressing problems. Firstly, there is a lack of efficient cleaning solutions. Secondly, the cleaning process usually requires extensive pure water production equipment and consumes huge amounts of pure water. This not only leads to lengthy production cycles but also results in significant water waste, placing a heavy burden on production cost control and environmental protection.

[0004] Therefore, it is imperative to develop a novel cleaning process specifically for the production of adsorbent materials. This process should possess the dual functions of effectively shortening the production cycle of adsorbent materials and reducing the consumption of pure water, thereby establishing an economical and green production model and promoting the sustainable development of the nuclear industry and related fields. Utility Model Content

[0005] The purpose of this invention is to provide a cleaning device for the production of adsorbent materials for radioactive wastewater treatment.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A cleaning device for producing adsorbent materials for radioactive wastewater treatment includes a cleaning unit and a filtration unit.

[0008] The cleaning unit includes an automatic feeder, a first cleaning column, a first centrifuge, a second cleaning column, a second centrifuge, a dryer, and a wastewater tank. The discharge from the automatic feeder is connected to the inlet of the first cleaning column via a first pipeline; the discharge from the first cleaning column is connected to the inlet of the first centrifuge; and the discharge from the first centrifuge is connected to the inlet of the automatic feeder. The discharge from the automatic feeder is connected to the inlet of the second cleaning column via a second pipeline; the discharge from the second cleaning column is connected to the inlet of the second centrifuge; and the discharge from the second centrifuge is connected to the inlet of the dryer. The wastewater outlets of the first cleaning column, the first centrifuge, and the second centrifuge are all connected to the inlet of the wastewater tank.

[0009] The filtration unit includes a multi-media filter, a security filter, a reverse osmosis membrane module, and a circulating water tank arranged sequentially in the flow direction of wastewater filtration; wherein the inlet of the multi-media filter is connected to the outlet of the wastewater tank, and the outlet of the circulating water tank is connected to the inlet of the first cleaning column and the second cleaning column respectively.

[0010] In the above solution, the cleaning column structure includes a shell with inlet and outlet ports. The shell can be made of materials such as stainless steel, plexiglass, or PVC plastic, offering excellent corrosion and wear resistance, making it suitable for various cleaning applications. The shell contains a filling medium, such as quartz sand or activated carbon fiber balls, which reduces the turbidity and conductivity of the adsorbent material during the cleaning process. The columnar design effectively increases the contact area, enhances the filtration effect, and its compact structure makes it easy to install and maintain.

[0011] A further technical solution involves having at least two cleaning columns. When there are two columns, the first cleaning column is used for coarse washing, i.e., reducing turbidity, while the second cleaning column is used for fine washing, i.e., reducing conductivity and pH.

[0012] In the above scheme, the multi-media filter is designed to handle 10 m³ / h of wastewater, enabling efficient treatment of large flow rates. Its filtration accuracy is 5 μm, effectively removing suspended solids, particulate matter, and other impurities from the water, thereby improving water cleanliness. The multi-layered filter media configuration (such as sand layers and activated carbon) within the filter not only filters impurities of different particle sizes in layers, removing suspended particles, solid impurities, and larger particles from the wastewater to ensure filtration effectiveness, but also helps extend the equipment's service life.

[0013] In the above scheme, the processing capacity of the security filters is 10 m³ / h. They employ multi-stage filtration technology with a filtration accuracy of 1 μm, further removing fine impurities from the water. The multi-stage filtration design simplifies equipment maintenance and ensures long-term stable system operation. Preferably, the number of security filters is at least two.

[0014] In a further technical solution, the number of membrane modules in the reverse osmosis device is at least two, and when the number is two, it includes a primary reverse osmosis device membrane module and a secondary reverse osmosis device membrane module connected in series.

[0015] The primary reverse osmosis unit membrane module is made of polyamide, which has excellent filtration performance and a water production capacity of 5 m³ / h. This primary reverse osmosis unit membrane module effectively removes dissolved salts, metals, and other impurities from wastewater, ensuring high water quality standards. The polyamide membrane possesses strong antioxidant and antifouling capabilities, maintaining stable water production performance over extended periods of use.

[0016] The secondary reverse osmosis membrane module is made of polyamide and has a water production capacity of 2 m³ / h. As a secondary purification device, the secondary reverse osmosis membrane module removes trace impurities that may remain after primary treatment, further improving water purity. The secondary reverse osmosis design not only enhances the overall efficiency of the water treatment system but also optimizes water quality.

[0017] The membrane modules of the first-stage and second-stage reverse osmosis units have a compact overall structure, occupy a small area, and are easy to install in various production environments.

[0018] In a further technical solution, the cleaning unit further includes a first vacuum pump, a second vacuum pump, a third vacuum pump, a fourth vacuum pump, and a first centrifugal pump; the first vacuum pump acts on the automatic feeder, creating a negative pressure state within the chamber of the automatic feeder; the second vacuum pump acts on the first cleaning column, creating a negative pressure state within the chamber of the first cleaning column; the third vacuum pump acts on the second cleaning column, creating a negative pressure state within the chamber of the second cleaning column; the fourth vacuum pump acts on the dryer, creating a negative pressure state within the chamber of the dryer; the first centrifugal pump is connected in series in the inlet pipe of the wastewater tank, pumping the waste liquid in the inlet pipe into the wastewater tank.

[0019] In a further technical solution, the filtration unit also includes a second centrifugal pump, a first-stage high-pressure pump, and a third centrifugal pump; the second centrifugal pump is connected in series in the inlet pipeline of the multi-media filter to pump the waste liquid in the inlet pipeline into the multi-media filter; the first-stage high-pressure pump is connected in series in the inlet pipeline of the reverse osmosis unit membrane module to pump the liquid in the inlet pipeline into the reverse osmosis unit membrane module; the third centrifugal pump is connected in series in the outlet pipeline of the circulating water tank to pump the liquid in the outlet pipeline into each cleaning column.

[0020] In a further technical solution, the filtration unit also includes a secondary high-pressure pump, which is connected in series in the pipeline between the membrane module of the primary reverse osmosis unit and the membrane module of the secondary reverse osmosis unit.

[0021] In a further technical solution, the filtration unit also includes a cleaning water tank, the inlet of which is connected to the liquid outlet of the second cleaning column, and the outlet of which is connected to the second inlet of the multi-media filter. The filtration unit also includes a fourth centrifugal pump connected in series in the outlet pipeline of the cleaning water tank, pumping the liquid in the outlet pipeline into the multi-media filter. This design allows for direct backwashing of the multi-media filter using the relatively clean drainage from the secondary cleaning process, further achieving water conservation.

[0022] In another feasible solution, the liquid outlet of the second cleaning column is connected to the liquid inlet of the wastewater tank, and a circulating water tank is connected to the multi-media filter through a backwashing pipeline, so that part of the water in the circulating water tank is used for backwashing the multi-media filter.

[0023] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0024] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0025] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0026] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.

[0027] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0028] The working principle and advantages of this utility model are as follows:

[0029] This invention provides a cleaning device for the production of adsorbent materials for radioactive wastewater treatment. By building an efficient cleaning and filtration system, this device can significantly reduce the working cycle of the adsorbent material cleaning task and reduce the amount of pure water produced while ensuring the cleaning effect, making the cleaning process efficient, convenient, economical and green.

[0030] In the adsorbent material cleaning stage, the adsorbent material undergoes primary immersion washing via a first cleaning column and secondary cleaning via a second cleaning column. The resulting wastewater then enters the filtration stage. In the wastewater filtration stage, the wastewater undergoes primary purification via a multi-media filter, secondary purification via a security filter, and finally tertiary purification via a reverse osmosis membrane module. The purified water can be reused in the cleaning process for subsequent cleaning applications. This invention reduces the demand for fresh pure water during cleaning by recycling wastewater, thus optimizing water resource utilization efficiency.

[0031] The further technical effects that this utility model can achieve through the preferred technical solution are as follows:

[0032] Wastewater in the wastewater tank undergoes preliminary purification through a multi-media filter to remove larger impurities. It then enters a first and second security filter for further fine filtration, ensuring the wastewater meets the requirements of the reverse osmosis purification system. The pre-purified wastewater then enters the reverse osmosis system, where it undergoes deep purification through a first-stage and a second-stage reverse osmosis membrane module to remove dissolved salts and other impurities, producing highly purified water.

[0033] The cleaning tank is regularly used to clean the multi-media filter to ensure its effective operation and prevent filtration performance degradation due to impurity buildup. Through this series of optimized and efficient treatment steps, this invention not only effectively cleans the adsorption material but also minimizes water consumption and improves the economic and environmental benefits of the production process by recycling and reusing wastewater.

[0034] In summary, the adsorption material production cleaning device provided by this utility model, which features high-efficiency cleaning and wastewater recycling treatment, reduces the cleaning cycle of production, decreases water waste, and improves the economy and environmental friendliness of the production process. Attached Figure Description

[0035] Appendix Figure 1 This is a schematic diagram of the structural composition of the cleaning device according to an embodiment of the present invention;

[0036] Appendix Figure 2 This is a block diagram illustrating the working principle of the intelligent control system according to an embodiment of the present invention.

[0037] In the attached diagrams: 1. First vacuum pump; 2. Automatic feeder; 3. First cleaning column; 4. Second vacuum pump; 5. First centrifuge; 6. Second cleaning column; 7. Third vacuum pump; 8. Second centrifuge; 9. Dryer; 10. Fourth vacuum pump; 11. First centrifugal pump; 12. Wastewater tank; 13. Second centrifugal pump; 14. Multi-media filter; 15. First security filter; 16. Second security filter; 17. First-stage high-pressure pump; 18. First-stage reverse osmosis membrane module; 19. Second-stage high-pressure pump; 20. Second-stage reverse osmosis membrane module; 21. Circulating water tank; 22. Third centrifugal pump; 23. Cleaning water tank; 24. Fourth centrifugal pump. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0039] The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the embodiments of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0040] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0041] Example: See Appendix Figure 1 As shown, a cleaning device for producing adsorbent materials for radioactive wastewater treatment includes a cleaning unit and a filtration unit.

[0042] The cleaning unit includes an automatic feeder 2, a first cleaning column 3, a first centrifuge 5, a second cleaning column 6, a second centrifuge 8, a dryer 9, and a wastewater tank 12. The discharge of the automatic feeder 2 is connected to the inlet of the first cleaning column 3 via a first pipeline. The discharge of the first cleaning column 3 is connected to the inlet of the first centrifuge 5, and the discharge of the first centrifuge 5 is connected to the inlet of the automatic feeder 2. The discharge of the automatic feeder 2 is connected to the inlet of the second cleaning column 6 via a second pipeline. The discharge of the second cleaning column 6 is connected to the inlet of the second centrifuge 8, and the discharge of the second centrifuge 8 is connected to the inlet of the dryer 9. The wastewater outlets of the first cleaning column 3, the first centrifuge 5, and the second centrifuge 8 are all connected to the inlet of the wastewater tank 12.

[0043] The first cleaning column 3 is used to soak and clean the adsorbent material to reduce its turbidity. The second cleaning column 6 is used to refine the adsorbent material, further removing any remaining microparticles and impurities, ensuring thorough cleaning of the adsorbent material, and reducing its conductivity and pH.

[0044] The cleaning unit further includes a first vacuum pump 1, a second vacuum pump 4, a third vacuum pump 7, a fourth vacuum pump 10, and a first centrifugal pump 11. The first vacuum pump 1 acts on the automatic feeder 2, creating a negative pressure state within its cavity. The second vacuum pump 4 acts on the first cleaning column 3, creating a negative pressure state within its cavity. The third vacuum pump 7 acts on the second cleaning column 6, creating a negative pressure state within its cavity. The fourth vacuum pump 10 acts on the dryer 9, creating a negative pressure state within its cavity. The first centrifugal pump 11 is connected in series in the inlet pipe of the wastewater tank 12.

[0045] The filtration unit includes a multi-media filter 14, a first security filter 15, a second security filter 16, a first-stage reverse osmosis membrane module 18, a second-stage reverse osmosis membrane module 20, and a circulating water tank 21, arranged sequentially in the flow direction of wastewater filtration. The inlet of the multi-media filter 14 is connected to the outlet of the wastewater tank 12, and the outlet of the circulating water tank 21 is connected to the inlets of the first cleaning column 3 and the second cleaning column 6, respectively.

[0046] The filtration unit also includes a second centrifugal pump 13, a first-stage high-pressure pump 17, and a third centrifugal pump 22. The second centrifugal pump 13 is connected in series in the inlet line of the multi-media filter 14. The first-stage high-pressure pump 17 is connected in series in the inlet line of the reverse osmosis membrane module. The third centrifugal pump 22 is connected in series in the outlet line of the circulating water tank 21.

[0047] Preferably, the filtration unit further includes a cleaning water tank 23, the inlet of which is connected to the waste liquid outlet of the second cleaning column 6, and the outlet of which is connected to the second inlet of the multi-media filter 14. The filtration unit also includes a fourth centrifugal pump 24, which is connected in series in the outlet pipeline of the cleaning water tank 23 to pump the liquid in the outlet pipeline into the multi-media filter 14.

[0048] The filtration unit also includes a secondary high-pressure pump 19, which is connected in series in the pipeline between the primary reverse osmosis membrane module 18 and the secondary reverse osmosis membrane module 20.

[0049] In another embodiment, the cleaning water tank 23 (not shown in the figure) may not be provided. The liquid outlet of the second cleaning column 6 may be connected to the liquid inlet of the wastewater tank 12. A circulating water tank 21 is provided and connected to the multi-media filter 14 through a backwashing pipeline. Part of the water in the circulating water tank 21 is used for backwashing the multi-media filter 14.

[0050] The circulating water in the circulating water tank 21 is sequentially transported to the first cleaning column 3 and the second cleaning column 6 through the third centrifugal pump 22 and plastic pipe, providing a large amount of water for subsequent cleaning, significantly reducing the amount of pure water produced, and shortening the production cleaning cycle.

[0051] The working principle of this utility model is explained as follows:

[0052] In the adsorbent material cleaning stage, the adsorbent material undergoes primary immersion washing through the first cleaning column 3 and secondary cleaning through the second cleaning column 6. The resulting wastewater enters the filtration stage. In the wastewater filtration stage, the wastewater undergoes primary purification through the multi-media filter 14, secondary purification through the security filter, and finally tertiary purification through the reverse osmosis membrane module. The purified water can be reused in the cleaning stage for subsequent cleaning applications.

[0053] like Figure 2 As shown, this embodiment may also include an intelligent control system, which includes a SCADA (Supervisory and Data Acquisition) system, a PLC (Programmable Logic Controller), and an online monitoring and alarm system. These units are combined to form an integrated, intelligent, and compact cleaning and filtration system.

[0054] The PLC is used to control the automatic start-up and shutdown of the equipment, as well as the adjustment of various parameters during the cleaning and filtration processes; the SCADA system is used to monitor the working status in real time, record process data, ensure work efficiency, and facilitate remote management. Based on the above systems, one-button start-up and automatic operation can be achieved after the working program is set.

[0055] The intelligent control system enhances equipment operating efficiency and stability through real-time monitoring, automated adjustment, and data-driven decision support. Utilizing SCADA (Supervisory and Data Acquisition System), the system collects real-time equipment data, such as flow rate, pressure, and water quality, ensuring optimal equipment operation. The system uses a PLC (Programmable Logic Controller) to operate and shut down the equipment and automatically adjust parameters, such as water flow rate and pressure, optimizing work efficiency and ensuring the best purification effect. The system employs an online monitoring and alarm system, combined with sensors and measuring instruments (flow meters, pressure sensors, conductivity meters, etc.), to collect relevant data during the cleaning process in real time, providing feedback and alarms for various faults.

[0056] The intelligent control system is designed with high efficiency, stability, and ease of maintenance in mind. Its introduction enables comprehensive monitoring and intelligent optimization of the equipment's operating status, ensuring long-term stable operation and maintaining excellent treatment results. Furthermore, the intelligent control system can identify potential problems in advance through data analysis and predictive maintenance, reducing downtime and maintenance costs, and ensuring that the equipment maintains high-efficiency water treatment capabilities throughout long-term operation.

[0057] During the adsorption material cleaning process, the intelligent control system can monitor the wastewater recovery volume and the operating status of the first centrifuge 5 in real time, automatically adjusting equipment parameters to ensure maximum wastewater recovery and optimal working efficiency of the first centrifuge 5. Furthermore, the intelligent control system can optimize the speed and time of the second centrifuge 8 to ensure efficient dehydration.

[0058] In the wastewater filtration stage, an intelligent control system monitors the wastewater flow rate, pressure, and quality in real time. Through data analysis, it automatically adjusts the operating status of the multi-media filter 14, optimizing the filtration process and ensuring a filtration accuracy of 5μm, meeting the design capacity of 10m³ / h. This guarantees initial water purification and meets the needs of large-scale water treatment. The intelligent control system also automatically adjusts the operation of the security filter based on real-time monitored data (such as water quality changes and flow fluctuations), optimizing filtration efficiency and ensuring the removal of fine impurities without interference. Furthermore, at this stage, the intelligent control system uses sensors and conductivity meters to monitor the wastewater quality and the status of the reverse osmosis membrane (such as pressure, flow rate, and permeate volume) in real time, automatically adjusting operating parameters to ensure purification efficiency and extend the membrane module's lifespan.

[0059] Meanwhile, the intelligent control system can automatically adjust the water volume and quality of the circulating water tank 21 according to the water source requirements and water quality conditions, ensuring that the water source is sufficient and meets the water requirements in the subsequent cleaning process.

[0060] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A cleaning device for producing adsorbent materials for radioactive wastewater treatment, characterized in that: Includes a cleaning unit and a filtration unit; The cleaning unit includes an automatic feeder, a first cleaning column, a first centrifuge, a second cleaning column, a second centrifuge, a dryer, and a wastewater tank. The discharge from the automatic feeder is connected to the inlet of the first cleaning column via a first pipeline; the discharge from the first cleaning column is connected to the inlet of the first centrifuge; and the discharge from the first centrifuge is connected to the inlet of the automatic feeder. The discharge from the automatic feeder is connected to the inlet of the second cleaning column via a second pipeline; the discharge from the second cleaning column is connected to the inlet of the second centrifuge; and the discharge from the second centrifuge is connected to the inlet of the dryer. The wastewater outlets of the first cleaning column, the first centrifuge, and the second centrifuge are all connected to the inlet of the wastewater tank. The filtration unit includes a multi-media filter, a security filter, a reverse osmosis membrane module, and a circulating water tank arranged sequentially in the flow direction of wastewater filtration; wherein the inlet of the multi-media filter is connected to the outlet of the wastewater tank, and the outlet of the circulating water tank is connected to the inlet of the first cleaning column and the second cleaning column respectively.

2. A cleaning device for producing adsorbent materials for radioactive wastewater treatment according to claim 1, characterized in that: The cleaning unit also includes a first vacuum pump, a second vacuum pump, a third vacuum pump, a fourth vacuum pump, and a first centrifugal pump; The first vacuum pump acts on the automatic feeder, creating a negative pressure state inside the automatic feeder's cavity; The second vacuum pump acts on the first cleaning column, causing the cavity of the first cleaning column to be under negative pressure. The third vacuum pump acts on the second cleaning column, causing the cavity of the second cleaning column to be under negative pressure. The fourth vacuum pump acts on the dryer, creating a negative pressure state inside the dryer's cavity; The first centrifugal pump is connected in series in the inlet pipe of the wastewater tank.

3. A cleaning device for producing adsorbent materials for radioactive wastewater treatment according to claim 1, characterized in that: The filtration unit also includes a second centrifugal pump, a first-stage high-pressure pump, and a third centrifugal pump; The second centrifugal pump is connected in series in the inlet pipeline of the multi-media filter; the first-stage high-pressure pump is connected in series in the inlet pipeline of the reverse osmosis membrane module; and the third centrifugal pump is connected in series in the outlet pipeline of the circulating water tank.

4. A cleaning device for producing adsorbent materials for radioactive wastewater treatment according to claim 1, characterized in that: The filtration unit also includes a cleaning water tank, the inlet of which is connected to the waste liquid outlet of the second cleaning column, and the outlet of which is connected to the second liquid inlet of the multi-media filter. The filtration unit also includes a fourth centrifugal pump, which is connected in series in the outlet pipeline of the cleaning water tank to pump the liquid in the outlet pipeline into the multi-media filter.

5. A cleaning device for producing adsorbent materials for radioactive wastewater treatment according to claim 1, characterized in that: The number of security filters is at least two; The reverse osmosis unit has at least two membrane modules, and when there are two, it includes a primary reverse osmosis membrane module and a secondary reverse osmosis membrane module connected in series. The filtration unit also includes a secondary high-pressure pump, which is connected in series in the pipeline between the primary and secondary reverse osmosis membrane modules.

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