Cleaning process for production of adsorbing material for radioactive wastewater treatment

Abstract

The invention discloses a cleaning process for production of an adsorption material for radioactive wastewater treatment, which comprises the following steps: in an adsorption material cleaning link, carrying out primary immersion cleaning on the adsorption material through a first cleaning column, carrying out secondary cleaning on the adsorption material through a second cleaning column, and filtering the generated wastewater. In the wastewater filtering link, the wastewater is subjected to primary purification through the multi-medium filter, the wastewater is subjected to secondary purification through the security filter, finally, the wastewater is subjected to tertiary purification through the membrane assembly of the reverse osmosis device, and the purified water can be reused in the cleaning link for subsequent cleaning. According to the efficient cleaning and wastewater recycling treatment adsorption material production cleaning scheme provided by the invention, the cleaning period of production is shortened, the waste of water resources is reduced, and the economical efficiency and environmental protection property of the production process are improved.

Description

Technical Field

[0001] The invention relates to the field of adsorption material production equipment, and in particular to a cleaning process for producing adsorption materials for radioactive wastewater treatment. Background Art

[0002] In the nuclear industry, nuclear wastewater treatment is a vital and urgent task, and adsorbents play a pivotal role in it. With their excellent adsorption properties, adsorbents have been widely used in removing radioactive pollutants from nuclear wastewater. By screening suitable and highly selective adsorbents, radioactive elements in nuclear wastewater can be efficiently removed, which not only significantly reduces the radioactive content, but also effectively reduces the risk of pollution to the environment, providing a strong guarantee for the sustainable development of the nuclear industry.

[0003] Usually, after the adsorbent material is produced, a variety of residues are often attached to its surface. In order to ensure stable adsorption performance and reliable product quality, thorough cleaning is required to remove these impurities. However, at present, there are many problems that need to be solved in the cleaning process of large-scale production of adsorbent materials. First, there is a lack of efficient cleaning solutions, and second, the cleaning process usually requires a large amount of pure water manufacturing equipment to produce and consume a huge amount of pure water, which not only makes the production cycle lengthy, but also causes a huge waste of water resources, which brings a heavy burden to production cost control and ecological environmental protection.

[0004] In view of this, it is urgent to develop a new cleaning process specifically for the production of adsorbent materials. This process should have the dual functions of effectively shortening the production cycle of adsorbent materials and reducing the amount of pure water used, thereby building an economical and green production model and promoting the sustainable development of the nuclear industry and related fields. Summary of the invention

[0005] The object of the present invention is to provide a cleaning process for producing adsorbent materials for treating radioactive wastewater.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: A cleaning process for producing adsorbent materials for treating radioactive wastewater, wherein the cleaning device used in the cleaning process includes a cleaning unit and a filtering unit; The cleaning unit comprises an automatic loader, a first cleaning column, a first centrifuge, a second cleaning column, a second centrifuge, a dryer, and a waste water tank; wherein the discharge of the automatic loader is connected to the feed of the first cleaning column through a first pipeline, the discharge of the first cleaning column is connected to the feed of the first centrifuge, and the discharge of the first centrifuge is connected to the feed of the automatic loader; the discharge of the automatic loader is connected to the feed of the second cleaning column through a second pipeline, the discharge of the second cleaning column is connected to the feed of the second centrifuge, and the discharge of the second centrifuge is connected to the feed of the dryer; the waste liquid outlets of the first cleaning column, the first centrifuge, and the second centrifuge are all connected to the liquid inlet of the waste water tank; The filtration unit comprises a multi-media filter, a security filter, a reverse osmosis device membrane assembly and a circulating water tank which are arranged in sequence according to the flow direction of the 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 inlet of the second cleaning column respectively; The cleaning process includes washing the adsorbent material through a first cleaning column, separating the solid and the liquid after washing, washing the separated adsorbent material again through a second cleaning column, separating the solid and the liquid after washing, and drying the separated adsorbent material; The liquid from the immersion and two solid-liquid separations is sent to the waste water tank and is filtered through multiple stages, security filtration and reverse osmosis filtration to form clean water that can be reused.

[0007] In the above scheme, the structure of the cleaning column includes a shell, and the shell is provided with a water inlet and outlet. The shell of the cleaning column can be made of stainless steel, organic glass, PVC plastic and other materials, which has excellent corrosion resistance and wear resistance and is suitable for various cleaning applications. Filling media such as quartz sand, activated carbon fiber balls, etc. are provided in the shell, which can reduce the turbidity and conductivity of the adsorbent material during the cleaning process. The columnar design of the cleaning column effectively increases the contact area and the filtering effect, and its structure is compact and easy to install and maintain.

[0008] According to a further technical solution, the number of the cleaning columns is at least two, and when the number is two, the first cleaning column is used for coarse cleaning, ie, reducing turbidity, and the second cleaning column is used for fine cleaning, ie, reducing conductivity and pH.

[0009] In the above scheme, the multi-media filter has a designed processing capacity of 10m³ / h, which can efficiently process large-flow wastewater. Its filtration accuracy is 5μm, which can effectively remove impurities such as suspended matter and solid particles in the water, thereby improving the cleanliness of the water quality. The multi-layer filter media configuration (such as sand layer, activated carbon, etc.) in the multi-media filter can not only filter impurities of different particle sizes in layers, remove suspended particles, solid impurities and larger particles in wastewater, ensure the filtration effect, but also help to extend the service life of the equipment.

[0010] In the above scheme, the processing capacity of the security filter is 10m³ / h. It adopts multi-stage filtration technology, and the filtration accuracy can reach 1μm, which can further remove fine impurities in the water. The design of multi-stage filtration technology makes the maintenance of the equipment simple and convenient, and can ensure the long-term stable operation of the system. Preferably, the number of the security filters is at least two.

[0011] According to a further technical solution, the number of the reverse osmosis device membrane components is at least two, and when the number is two, it includes a first-stage reverse osmosis device membrane component and a second-stage reverse osmosis device membrane component connected in series.

[0012] The first-stage reverse osmosis device membrane component is made of polyamide material, has good filtration performance, and has a water production capacity of 5m³ / h. The first-stage reverse osmosis device membrane component can effectively remove impurities such as dissolved salts and metals in wastewater to ensure that the water quality reaches high standards. The polyamide membrane has strong antioxidant and anti-pollution capabilities and can maintain a stable water production effect during long-term use.

[0013] The secondary reverse osmosis device membrane assembly is made of polyamide and has a water output of 2m³ / h. As a secondary purification device, the secondary reverse osmosis device membrane assembly can remove trace impurities that still exist after primary treatment, further improving the purity of water. The design of the secondary reverse osmosis not only enhances the overall efficiency of the water treatment system, but also optimizes the water quality.

[0014] The membrane components of the first-stage reverse osmosis device and the membrane components of the second-stage reverse osmosis device have a compact overall structure and occupy a small area, and are easy to install in various production environments.

[0015] According to a further technical solution, 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 loader to make the cavity of the automatic loader in a negative pressure state; the second vacuum pump acts on the first cleaning column to make the cavity of the first cleaning column in a negative pressure state; the third vacuum pump acts on the second cleaning column to make the cavity of the second cleaning column in a negative pressure state; the fourth vacuum pump acts on the dryer to make the cavity of the dryer in a negative pressure state; the first centrifugal pump is connected in series to the liquid inlet pipeline of the waste water tank to pump the waste liquid in the liquid inlet pipeline into the waste water tank.

[0016] According to a further technical solution, the filtration unit also includes a second centrifugal pump, a first-level high-pressure pump, and a third centrifugal pump; the second centrifugal pump is connected in series to the liquid inlet pipeline of the multi-media filter to pump the waste liquid in the liquid inlet pipeline into the multi-media filter; the first-level high-pressure pump is connected in series to the liquid inlet pipeline of the membrane assembly of the reverse osmosis device to pump the liquid in the liquid inlet pipeline into the membrane assembly of the reverse osmosis device; the third centrifugal pump is connected in series to the liquid outlet pipeline of the circulating water tank to pump the liquid in the liquid outlet pipeline into each cleaning column.

[0017] According to a further technical solution, the filtration unit further comprises a secondary high-pressure pump, which is connected in series in a pipeline between the membrane assembly of the primary reverse osmosis device and the membrane assembly of the secondary reverse osmosis device.

[0018] In a further technical solution, the filter unit further includes a cleaning water tank, the liquid inlet of which is connected to the liquid outlet of the second cleaning column, and the liquid outlet of the cleaning water tank is connected to the second liquid inlet of the multi-media filter; the filter unit further includes a fourth centrifugal pump, which is serially connected to the liquid outlet pipeline of the cleaning water tank to pump the liquid in the liquid outlet pipeline into the multi-media filter. With this design, the multi-media filter can be backwashed directly with relatively clean secondary cleaning drainage, further achieving the effect of water conservation.

[0019] 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 provided to be connected to the multi-media filter through a backwashing pipeline, and part of the water in the circulating water tank is used for backwashing the multi-media filter.

[0020] According to a further technical solution, the cleaning process includes an adsorption material cleaning step and a wastewater filtration step, wherein the adsorption material cleaning step includes: Step 1: The adsorbent material enters the first washing column for primary washing to remove larger particle impurities and suspended matter, and the wastewater generated during the primary washing process is sent to the wastewater tank; the adsorbent material that has completed the primary washing is transported to the first centrifuge for solid-liquid separation, and the separated adsorbent material is transported to the second washing column, and the separated wastewater is recovered to the wastewater tank; Step 2: The adsorbent material enters the second cleaning column for secondary cleaning to remove residual fine impurities; the adsorbent material after the secondary cleaning is separated into solid and liquid by the second centrifuge, the separated adsorbent material is transported to the dryer, and the separated water is recovered into the waste water tank; Step 3: Dry the adsorbent material using a dryer to obtain an adsorbent material for radioactive wastewater treatment.

[0021] In a further technical solution, the wastewater filtration step includes: Step 1: The recycled wastewater enters a multi-media filter for primary purification to remove suspended particles, solid impurities, and larger particles in the wastewater. Step 2: The preliminarily filtered liquid after primary purification enters a security filter for secondary purification to remove fine impurities in the water. Step 3: The liquid after secondary purification enters a reverse osmosis device for tertiary purification to remove residual trace impurities in the water. The liquid after tertiary purification is sent to a circulation water tank to complete the wastewater filtration; this circulation water tank serves as the water source for primary immersion washing and secondary cleaning in the cleaning process.

[0022] In a further technical solution, in Step 2 of the cleaning process, the water generated during secondary cleaning is sent to a primary cleaning water tank, and the water in this cleaning water tank serves as the backwashing water source for the multi-media filter.

[0023] In another feasible solution, in Step 2 of the cleaning process, the water generated during secondary cleaning is sent to the wastewater tank; the backwashing water for the multi-media filter is taken from the circulation water tank.

[0024] Regarding the use of "first", "second", etc. in this article, it does not particularly refer to the meaning of order or sequence, nor is it used to limit this case. It is only used to distinguish components or operations described with the same technical terms.

[0025] Regarding the use of "connection" or "positioning" in this article, it can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, and can also refer to two or more components or devices operating or acting on each other.

[0026] Regarding the use of "include", "comprise", "have", etc. in this article, they are all open-ended terms, that is, they mean including but not limited to.

[0027] Regarding the terms used in this article, unless otherwise specified, they usually have their ordinary meanings in this field, in the context of this case, and in the context of special content. Some 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 regarding the description of this case.

[0028] Regarding the use of "front", "rear", "upper", "lower", "left", "right", etc. in this article, they are all directional terms. In this case, they are only used to illustrate the positional relationship between various structures and are not used to limit the protection scope of this case and the specific directions during actual implementation.

[0029] The working principle and advantages of the present invention are as follows: The present invention provides a cleaning process for the production of adsorbent materials for radioactive wastewater treatment. By building an efficient cleaning and filtration system, the process can greatly shorten the working cycle of the adsorbent material cleaning task and reduce the production of pure water while ensuring the cleaning effect, thereby making the cleaning process efficient, convenient, economical and green.

[0030] Among them, in the adsorption material cleaning link, the adsorption material is first-stage washed by the first cleaning column, and second-stage washed by the second cleaning column, and the generated wastewater enters the filtration link. In the wastewater filtration link, the wastewater is first-stage purified by the multi-media filter, second-stage purified by the security filter, and finally tertiary purified by the reverse osmosis device membrane assembly. The purified water can be reused in the cleaning link for subsequent cleaning. The present invention reduces the demand for fresh pure water for cleaning through the recycling of wastewater, and optimizes the use efficiency of water resources.

[0031] The further technical effects that can be achieved by the preferred technical solution of the present invention are as follows: The wastewater in the wastewater tank is initially purified by a multi-media filter to remove larger impurities, and then enters the first and second security filters for further fine filtration to ensure that the wastewater meets the requirements of the reverse osmosis purification system. The initially purified wastewater enters the reverse osmosis system and is deeply purified by the first and second reverse osmosis membrane components to remove impurities such as dissolved salts and produce highly purified pure water.

[0032] The cleaning water tank is used to clean the multi-media filter regularly to ensure its effective operation and avoid the degradation of filtering performance due to the accumulation of impurities. Through this series of preferred efficient processing steps, the present invention can not only effectively clean the adsorption material, but also reduce the consumption of water resources to the maximum extent through wastewater recovery and recycling, thereby improving the economy and environmental protection of the production process.

[0033] In summary, the adsorption material production and cleaning solution with efficient cleaning and wastewater recycling treatment provided by the present invention shortens the production cleaning cycle, reduces the waste of water resources, and improves the economy and environmental protection of the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Attached Figure 1 A schematic diagram of the structure of a cleaning device according to an embodiment of the present invention; Attached Figure 2 A flowchart of the steps of the cleaning process according to an embodiment of the present invention; Attached Figure 3 The figure is a block diagram of the working principle of the intelligent control system according to an embodiment of the present invention.

[0035] In the above drawings: 1. the first vacuum pump; 2. the automatic loader; 3. the first cleaning column; 4. the second vacuum pump; 5. the first centrifuge; 6. the second cleaning column; 7. the third vacuum pump; 8. the second centrifuge; 9. the dryer; 10. the fourth vacuum pump; 11. the first centrifugal pump; 12. the waste water tank; 13. the second centrifugal pump; 14. the multi-media filter; 15. the first security filter; 16. the second security filter; 17. the first-stage high-pressure pump; 18. the first-stage reverse osmosis device membrane assembly; 19. the second-stage high-pressure pump; 20. the second-stage reverse osmosis device membrane assembly; 21. the circulating water tank; 22. the third centrifugal pump; 23. the cleaning water tank; 24. the fourth centrifugal pump. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: The present invention will be clearly described below with drawings and detailed descriptions. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0037] The terms used herein are only for describing specific embodiments and are not intended to be limiting of the present invention. Singular forms such as "a", "this", "here", "this" and "the" as used herein also include plural forms.

[0038] Example 1: See attached Figure 1 As shown, a cleaning process for producing adsorbent materials for treating radioactive wastewater, the cleaning device used in the cleaning process includes a cleaning unit and a filtering unit.

[0039] The cleaning unit includes an automatic loader 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 loader 2 is connected to the feed of the first cleaning column 3 through a first pipeline, the discharge of the first cleaning column 3 is connected to the feed of the first centrifuge 5, and the discharge of the first centrifuge 5 is connected to the feed of the automatic loader 2. The discharge of the automatic loader 2 is connected to the feed of the second cleaning column 6 through a second pipeline, the discharge of the second cleaning column 6 is connected to the feed of the second centrifuge 8, and the discharge of the second centrifuge 8 is connected to the feed of the dryer 9. The waste liquid outlets of the first cleaning column 3, the first centrifuge 5, and the second centrifuge 8 are all connected to the liquid inlet of the wastewater tank 12.

[0040] The first cleaning column 3 is used to soak and clean the adsorption material to reduce the turbidity of the adsorption material. The second cleaning column 6 is used to refine the adsorption material and further remove the existing tiny particles and impurities to ensure that the adsorption material is thoroughly cleaned and reduce the conductivity and pH.

[0041] The cleaning unit also 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 loader 2, so that the cavity of the automatic loader 2 is in a negative pressure state. The second vacuum pump 4 acts on the first cleaning column 3, so that the cavity of the first cleaning column 3 is in a negative pressure state. The third vacuum pump 7 acts on the second cleaning column 6, so that the cavity of the second cleaning column 6 is in a negative pressure state. The fourth vacuum pump 10 acts on the dryer 9, so that the cavity of the dryer 9 is in a negative pressure state. The first centrifugal pump 11 is connected in series to the liquid inlet pipeline of the wastewater tank 12.

[0042] The filtration unit includes a multi-media filter 14, a first security filter 15, a second security filter 16, a first-stage reverse osmosis device membrane assembly 18, a second-stage reverse osmosis device membrane assembly 20, and a circulating water tank 21, which are arranged in sequence according to 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 inlet of the first cleaning column 3 and the second cleaning column 6, respectively.

[0043] The filtration unit further 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 to the liquid inlet pipeline of the multi-media filter 14. The first-stage high-pressure pump 17 is connected in series to the liquid inlet pipeline of the reverse osmosis device membrane assembly. The third centrifugal pump 22 is connected in series to the liquid outlet pipeline of the circulating water tank 21.

[0044] Preferably, the filtration unit further comprises a cleaning water tank 23, the liquid inlet of the cleaning water tank 23 is connected to the waste liquid outlet of the second cleaning column 6, and the liquid outlet of the cleaning water tank 23 is connected to the second liquid inlet of the multi-media filter 14. The filtration unit further comprises a fourth centrifugal pump 24, which is serially connected to the liquid outlet pipeline of the cleaning water tank 23 to pump the liquid in the liquid outlet pipeline into the multi-media filter 14.

[0045] The filtration unit further includes a secondary high-pressure pump 19 , which is serially connected in a pipeline between the primary reverse osmosis device membrane assembly 18 and the secondary reverse osmosis device membrane assembly 20 .

[0046] In another embodiment, the cleaning water tank 23 may not be provided (not shown in the figure), the liquid outlet of the second cleaning column 6 may be connected to the liquid inlet of the waste water tank 12, and a circulating water tank 21 is provided to be connected to the multi-media filter 14 through a backwashing pipeline, and part of the water in the circulating water tank 21 is used for backwashing the multi-media filter 14.

[0047] like Figure 2 As shown, the cleaning process includes an adsorption material cleaning step and a wastewater filtration step, wherein the adsorption material cleaning step includes: Step 1: The automatic feeder 2 transports the adsorbent material to the first cleaning column 3 through a stainless steel pipe under the action of the second vacuum pump 4, and the adsorbent material is soaked and cleaned (primary immersion) through the first cleaning column 3 to reduce the turbidity of the adsorbent material, thereby ensuring that subsequent treatment can proceed smoothly. The wastewater generated after flushing is discharged into the wastewater tank 12 through a plastic pipe under the action of the first centrifugal pump 11 for centralized wastewater recovery. At the same time, the adsorbent material after flushing enters the first centrifuge 5 through a plastic pipe for solid-liquid separation. The waste liquid outlet of the first centrifuge 5 is connected to the wastewater tank 12 through a plastic pipe, and the generated wastewater is transported to the wastewater tank 12 through the first centrifugal pump 11.

[0048] Step 2: The adsorbed material after centrifugation is transported to the automatic feeder 2 through the first vacuum pump 1. The automatic feeder 2 transports the adsorbed material to the second cleaning column 6 under the action of the third vacuum pump 7. The adsorbed material is fully rinsed (secondary cleaning) by the second cleaning column 6 to further remove the existing tiny particles and impurities to ensure that the adsorbed material is thoroughly cleaned. After cleaning, the adsorbed material enters the second centrifuge 8 through a plastic pipe for dehydration, and the adsorbed material after centrifugation is transported to the dryer 9 through the third vacuum pump 7, and the waste water is recovered to the waste water tank 12 through the first centrifugal pump 11.

[0049] Step 3: Dry the adsorbent material using a dryer 9 to obtain an adsorbent material for radioactive wastewater treatment.

[0050] The wastewater filtration process includes: Step 1: The wastewater in the wastewater tank 12 is transported to the multi-media filter 14 through the second centrifugal pump 13, and the impurities in the wastewater are preliminarily filtered under the action of different media layers (primary purification).

[0051] Step 2: The preliminary filtrate passes through the first security filter 15 and the second security filter 16 in turn to further remove the remaining fine impurities (secondary purification). The processing capacity of the first security filter 15 and the second security filter 16 is 10m³ / h, which ensures the flow demand of the entire system and provides efficient and stable filtering performance.

[0052] Step 3: The filtrate enters the first-stage reverse osmosis device membrane assembly 18 through the first-stage high-pressure pump 17 for deep purification. The first-stage filtrate in the first-stage reverse osmosis device membrane assembly 18 is transported to the second-stage reverse osmosis device membrane assembly 20 through the second-stage high-pressure pump 19, and finally highly purified pure water (three-stage purification) is obtained. The second-stage filtrate in the second-stage reverse osmosis device membrane assembly 20 enters the circulating water tank 21 through a plastic pipe, and the wastewater filtration is completed. The first-stage reverse osmosis membrane assembly (water output 5m³ / h) is responsible for most of the purification tasks, while the second-stage reverse osmosis membrane assembly (water output 2m³ / h) is used to further remove trace impurities that may exist after the first-stage treatment, providing purer water quality.

[0053] The entire filtration process ensures the efficient removal of impurities in the water through the close cooperation of multi-stage filtration, security filtration and reverse osmosis technology, and ultimately provides high-quality water that meets the requirements.

[0054] The circulating water in the circulating water tank 21 is transported to the first cleaning column 3 and the second cleaning column 6 in sequence through the third centrifugal pump 22 and the plastic pipe, providing a large amount of water for subsequent cleaning, significantly reducing the production amount of pure water and shortening the production cleaning cycle.

[0055] Preferably, in step two of the cleaning process, the water generated during the secondary cleaning process is sent to a cleaning water tank 23, which is connected to the multimedia filter 14 through a fourth centrifugal pump 24 and a plastic pipe, and is used for regular cleaning of the multimedia filter 14 to avoid a decrease in the filtering performance of the multimedia filter 14 due to the accumulation of impurities.

[0056] In another embodiment, the cleaning water tank 23 may not be provided (not shown in the figure), and the water generated during the secondary cleaning process is sent to the waste water tank 12 , and the backwash water of the multi-media filter 14 is taken from the circulating water tank 21 .

[0057] like Figure 3 As shown, this embodiment may also include an intelligent control system, which includes a SCADA (supervisory control and data acquisition system), a PLC (programmable logic controller), and an online monitoring and alarm system. The above units are combined together to form an integrated, intelligent, and compact cleaning and filtering system.

[0058] PLC is used to control the automatic start and stop of the equipment and the adjustment of various parameters during the cleaning and filtering process; 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 system, one-button start and automatic operation can be achieved after setting the working procedure.

[0059] The intelligent control system improves the efficiency and stability of equipment operation through real-time monitoring, automatic adjustment and data-driven decision support. The system uses SCADA (Supervisory Control and Data Acquisition System) to collect equipment data in real time, such as flow, pressure and water quality, to ensure that the equipment operates in the optimal state. The system runs, shuts down equipment and automatically adjusts equipment parameters such as water flow rate and pressure through PLC (Programmable Logic Controller) to optimize work efficiency and ensure the best purification effect. The system uses an online monitoring and alarm system, and combines sensors and measuring instruments (flow meters, pressure sensors, conductivity meters, etc.) to collect relevant data in the cleaning production process in real time, and feedback and alarm various faults.

[0060] The intelligent control system design focuses on efficiency, stability and easy maintenance. Its introduction enables the equipment's operating status to be fully monitored and intelligently optimized, ensuring long-term stable operation of the equipment and maintaining good treatment effects. In addition, the intelligent control system can identify potential problems in advance through data analysis and predictive maintenance, reduce downtime and maintenance costs, and ensure that the equipment always maintains efficient water treatment capabilities during long-term operation.

[0061] In step 1 of the adsorption material cleaning process, the wastewater recovery amount and the operating status of the first centrifuge 5 can be monitored in real time by the intelligent control system, and the equipment parameters can be automatically adjusted to ensure the maximization of wastewater recovery and the optimal working efficiency of the first centrifuge 5.

[0062] In step 2 of the adsorption material cleaning process, the speed and time of the second centrifuge 8 can be optimized through the intelligent control system to ensure efficient dehydration.

[0063] In step 1 of the wastewater filtration process, the water flow, pressure and water quality of the wastewater can be monitored in real time through the intelligent control system, and the working state of the multi-media filter 14 can be automatically adjusted through data analysis to optimize the filtration process, ensure that the filtration accuracy is 5μm, meet the design processing capacity of 10m³ / h, ensure the initial purification of the water quality and meet the needs of large-scale water treatment.

[0064] In step 2 of the wastewater filtration process, the intelligent control system can automatically adjust the operating status of the security filter based on real-time monitoring data (such as water quality changes and flow fluctuations), optimize the filtration efficiency, and ensure that the removal of fine impurities is not interfered with.

[0065] In step three of the wastewater filtration process, the intelligent control system can monitor the wastewater quality and the status of the reverse osmosis membrane (such as pressure, flow, water production, etc.) in real time through sensors and conductivity meters at this stage, and automatically adjust the operating parameters to ensure purification efficiency and extend the service life of the membrane components.

[0066] At the same time, the intelligent control system can automatically adjust the water volume and water quality of the circulating water tank 21 according to the water source requirements and water quality conditions, ensuring that the water source in the subsequent cleaning process is sufficient and meets the water requirements.

[0067] Comparative Example 1: This comparative example 1 is a traditional cleaning method, which usually adopts manual pure water cleaning and a simple single-stage filtration system. During the cleaning process, the adsorbent material undergoes a preliminary soaking and cleaning to remove larger particulate impurities, and then enters multiple manual cleaning and dehydration stages. This type of traditional cleaning method is not only time-consuming, but also lacks an effective wastewater recovery and reuse mechanism. The cleaning cycle usually takes 168-180 hours to complete all cleaning task operations, and the large amount of wastewater generated in the process usually needs to be recycled, stored, and sent out for treatment, resulting in a serious waste of water resources and a sharp increase in production costs.

[0068] In comparison, the adsorption material production cleaning process provided in Example 1 has significant advantages in terms of cleaning cycle. Compared with traditional cleaning methods, it can effectively shorten the cleaning cycle and improve the overall efficiency.

[0069] As shown in Table 1, the cleaning device provided in Example 1 significantly reduces the waste of water resources and shortens the cleaning cycle of the adsorbent material through the design of intelligent, automated system, multi-stage filtration, and wastewater recycling. The cleaning device uses a multi-media filter, a security filter, and a reverse osmosis membrane assembly to deeply purify the wastewater, thereby realizing the recycling and reuse of the wastewater. In addition, the cleaning water of Example 1 can be recycled in multiple links, significantly reducing the consumption demand of pure water, shortening the cleaning cycle to 60-84h, and reducing the production cycle by about 53%. The above-mentioned efficient wastewater recovery and utilization not only reduces the waste of water resources, but also makes the entire cleaning process more efficient, environmentally friendly, and economical.

[0070] Table 1 Comparison of the features of the conventional cleaning method and the cleaning system of the present invention

[0071] From the data in Table 1, it can be seen that the cleaning process of Example 1 has significant advantages in water saving, improving cleaning efficiency and shortening cleaning cycle compared with Comparative Example 1. By optimizing the cleaning process and strengthening wastewater treatment, Example 1 not only reduces the cost of water resource use, but also improves the overall efficiency of production, bringing higher economic benefits and stronger environmental competitiveness to the production of adsorption materials.

[0072] Comparative Example 2: In order to evaluate the advantage of Example 1 in economical use of water resources, the water-saving effect and water resource utilization efficiency were analyzed by comparing the traditional cleaning method of Comparative Example 2 with the pure water consumption and circulating water usage of Example 1.

[0073] During the cleaning process of the traditional adsorption material in Comparative Example 2, due to the lack of a wastewater recovery and recycling system, the cleaning operation of the adsorption material mainly relied on a large supply of pure water. The amount of pure water required for each cleaning of the adsorption material was usually 2000 - 3000L. Due to the lack of an effective wastewater treatment system, the wastewater generated during the cleaning process needed to be recovered, stored, and sent out for treatment, resulting in serious waste of water resources and a sharp increase in production costs. The traditional cleaning method in Comparative Example 2 had a very high consumption of fresh pure water, while the usage of recycled water was extremely limited. Usually, only a small amount of wastewater could be reused, which could not effectively support subsequent cleaning operations. Therefore, Comparative Example 2 not only caused excessive consumption of water resources, but also led to a longer cleaning cycle and higher production costs.

[0074] As shown in Table 2, the cleaning process of Example 1 significantly reduced the usage of pure water through wastewater recovery and recycling. The amount of pure water required for each cleaning was usually reduced to 500 - 800L, reducing the manufacturing consumption of pure water by approximately 73%. The wastewater was recovered into the circulation water tank after solid-liquid separation, filtration, and reverse osmosis treatment, and then supplied to the cleaning device for reuse. Through multi-stage purification, the wastewater could not only effectively remove impurities therein, but also achieve recycling. During the cleaning process, the treated wastewater could be recycled in multiple cleaning links, ensuring sufficient water supply and reducing the dependence on fresh water resources. The amount of recycled water generated could reach 1500 - 2000L, which not only reduced the consumption of pure water, but also supported multiple cleaning operations, improving the utilization efficiency of water resources.

[0075] Table 2 Comparison of the effects between the traditional cleaning method and the cleaning system of the present invention

[0076] From the data in Table 2, it can be seen that the optimized design of Example 1 in terms of pure water usage and wastewater recovery significantly improved the utilization efficiency of water resources. Compared with Comparative Example 2, Example 1 greatly reduced the consumption of fresh pure water, and through efficient wastewater recovery and recycling technology, not only saved water resources, but also reduced the costs of wastewater collection, storage, and external treatment. Example 1 effectively reduced the water resource consumption and costs during the production process, having significant economic benefits and environmental protection advantages.

[0077] The above embodiments are only used to illustrate the technical concept and characteristics of the present invention, and their purpose is to enable those familiar with this technology to understand the content of the present invention and implement it accordingly. It should not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A cleaning process for producing adsorbent materials for radioactive wastewater treatment, characterized in that: The cleaning device used in the cleaning process includes a cleaning unit and a filtering unit; The cleaning unit comprises an automatic loader, a first cleaning column, a first centrifuge, a second cleaning column, a second centrifuge, a dryer, and a waste water tank; wherein the discharge of the automatic loader is connected to the feed of the first cleaning column through a first pipeline, the discharge of the first cleaning column is connected to the feed of the first centrifuge, and the discharge of the first centrifuge is connected to the feed of the automatic loader; the discharge of the automatic loader is connected to the feed of the second cleaning column through a second pipeline, the discharge of the second cleaning column is connected to the feed of the second centrifuge, and the discharge of the second centrifuge is connected to the feed of the dryer; the waste liquid outlets of the first cleaning column, the first centrifuge, and the second centrifuge are all connected to the liquid inlet of the waste water tank; The filtration unit comprises a multi-media filter, a security filter, a reverse osmosis device membrane assembly and a circulating water tank which are arranged in sequence according to the flow direction of the 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 inlet of the second cleaning column respectively; The cleaning process includes washing the adsorbent material through a first cleaning column, separating the solid and the liquid after washing, washing the separated adsorbent material again through a second cleaning column, separating the solid and the liquid after washing, and drying the separated adsorbent material; The liquid from the immersion and two solid-liquid separations is sent to the waste water tank and is filtered through multiple stages, security filtration and reverse osmosis filtration to form clean water that can be reused.

2. A cleaning process for producing adsorbent materials for radioactive wastewater treatment according to claim 1, characterized in that: The cleaning process includes an adsorption material cleaning step and a wastewater filtration step, wherein the adsorption material cleaning step includes: Step 1: The adsorbent material enters the first washing column for primary washing to remove larger particle impurities and suspended matter, and the wastewater generated during the primary washing process is sent to the wastewater tank; the adsorbent material that has completed the primary washing is transported to the first centrifuge for solid-liquid separation, and the separated adsorbent material is transported to the second washing column, and the separated wastewater is recovered to the wastewater tank; Step 2: The adsorbent material enters the second cleaning column for secondary cleaning to remove residual fine impurities; the adsorbent material after the secondary cleaning is separated into solid and liquid by the second centrifuge, the separated adsorbent material is transported to the dryer, and the separated water is recovered into the waste water tank; Step 3, drying the adsorbent material by a dryer to obtain an adsorbent material for radioactive wastewater treatment; The wastewater filtration process includes: Step 1: The recovered wastewater enters the multi-media filter for primary purification to remove suspended particles, solid impurities and larger particles in the wastewater; Step 2: The primary filtrate after primary purification enters the security filter for secondary purification to remove fine impurities in the water; Step three: the liquid after secondary purification enters the reverse osmosis device for tertiary purification to remove the trace impurities remaining in the water. The liquid after the tertiary purification is sent to the circulating water tank to complete the wastewater filtration; the circulating water tank is used as the water source for the primary immersion and secondary cleaning in the cleaning process.

3. A cleaning process for producing adsorbent materials for radioactive wastewater treatment according to claim 2, characterized in that: In step 2 of the cleaning process, water generated during the secondary cleaning process is sent to a cleaning water tank, and the water in the cleaning water tank is used as a backwash water source for the multi-media filter.

4. A cleaning process for producing adsorbent materials for treating radioactive wastewater according to claim 2, characterized in that: In step 2 of the cleaning process, water generated during the secondary cleaning process is sent to the waste water tank; The backwash water of the multi-media filter is taken from the circulating water tank.

5. The cleaning process 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 loader to make the cavity of the automatic loader in a negative pressure state; The second vacuum pump acts on the first cleaning column to make the cavity of the first cleaning column in a negative pressure state; The third vacuum pump acts on the second cleaning column to make the cavity of the second cleaning column in a negative pressure state; The fourth vacuum pump acts on the dryer to make the cavity of the dryer in a negative pressure state; The first centrifugal pump is connected in series to the liquid inlet pipeline of the wastewater tank.

6. A cleaning process for producing adsorbent materials for treating radioactive wastewater 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 to the liquid inlet pipeline of the multi-media filter; the first-stage high-pressure pump is connected in series to the liquid inlet pipeline of the membrane assembly of the reverse osmosis device; and the third centrifugal pump is connected in series to the liquid outlet pipeline of the circulating water tank.

7. The cleaning process for producing adsorbent materials for treating radioactive wastewater according to claim 1, characterized in that: The filter unit further comprises a cleaning water tank, the liquid inlet of the cleaning water tank is connected to the waste liquid outlet of the second cleaning column, and the liquid outlet of the cleaning water tank is connected to the second liquid inlet of the multi-media filter; The filter unit further comprises a fourth centrifugal pump, which is serially connected to the liquid outlet pipeline of the cleaning water tank and pumps the liquid in the liquid outlet pipeline into the multi-media filter.

8. The cleaning process for producing adsorbent materials for treating radioactive wastewater according to claim 1, characterized in that: The number of the security filters is at least two; The number of the reverse osmosis device membrane components is at least two, and when the number is two, it includes a first-level reverse osmosis device membrane component and a second-level reverse osmosis device membrane component connected in series in sequence; the filtration unit also includes a second-level high-pressure pump, which is connected in series in the pipeline between the first-level reverse osmosis device membrane component and the second-level reverse osmosis device membrane component.

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