Integrated deionized water treatment equipment and system for high-level liquid waste

Abstract

The invention relates to the field of high-level liquid waste treatment, in particular to integrated deionized water treatment equipment and system for high-level liquid waste. The technical problems that in the prior art, a high-level liquid waste deionized water treatment system generally adopts a single treatment process during use, and various impurities and ions in water are difficult to effectively remove; according to the technical scheme, the integrated deionized water treatment equipment and system for the high-level liquid waste comprise a base, a conveying pipe, a pretreatment assembly, a desalination assembly, a chemical adding assembly and a control assembly; compared with a high-level liquid waste deionized water treatment system in the prior art, which adopts a single treatment process and is difficult to effectively remove various impurities and ions in water, the system disclosed by the invention can effectively remove salt, organic matters, microorganisms and trace impurities in water through multi-stage filtration and two-stage reverse osmosis treatment in combination with the EDI device for deep desalting, so that the water quality is improved. The purity and the stability of water quality are obviously improved.

Description

Technical Field

[0001] The present invention relates to the field of high-level radioactive liquid waste treatment, and in particular to an integrated deionized water treatment device and system for high-level radioactive liquid waste. Background Art

[0002] The high-level radioactive liquid waste deionized water treatment system is designed to remove ions from high-level radioactive liquid waste to achieve the purpose of safe treatment and disposal. Large particle impurities, suspended matter, etc. in the waste liquid are removed through multi-media filters (such as quartz sand, activated carbon, etc.) to provide relatively clear liquid for subsequent treatment. The selective permeability of the membrane is used to allow only water molecules to pass through, while most ions, organic matter, bacteria, etc. are retained on one side of the membrane, thereby achieving the purpose of deionization and concentration; reverse osmosis technology can remove more than 90% of ions in the waste liquid. On the basis of reverse osmosis treatment, electrodeionization technology is further adopted; the EDI module combines the principles of electrodialysis and ion exchange, and uses the electric field to make ions in the water migrate and be removed between membranes, while realizing continuous regeneration of the resin without the use of acid-base regeneration agents. However, the high-level radioactive liquid waste deionized water treatment system under the existing technology adopts a single treatment process when performing deionization treatment, which makes it difficult to effectively remove multiple impurities and ions in the water. Summary of the invention

[0003] In order to overcome the problem that the high-level radioactive waste deionized water treatment system under the prior art generally adopts a single treatment process when in use, it is difficult to effectively remove multiple impurities and ions in the water.

[0004] The technical scheme of the present invention is: an integrated deionized water treatment equipment for high-level radioactive waste liquid, comprising a base, a delivery pipe, a pretreatment component, a desalination component, a desalination component, a dosing component and a control component; a delivery pipe is arranged above the base, and a plurality of delivery pipes are arranged; a pretreatment component is arranged above the base, a desalination component is arranged above the base, a desalination component is arranged above the base, a dosing component is arranged above the base, the pretreatment component and the desalination component are connected through a delivery pipe, the desalination component and the desalination component are connected through a delivery pipe, and a control component is arranged above the base; the pretreatment component The component includes a laminated self-cleaning filter and an ultrafiltration device. The laminated self-cleaning filter is arranged above the base, and the ultrafiltration device is arranged above the base. The laminated self-cleaning filter and the ultrafiltration device are connected through a delivery pipe; the desalination component includes a primary reverse osmosis device and a secondary reverse osmosis device; the primary reverse osmosis device is arranged above the base, and the secondary reverse osmosis device is arranged above the base; the desalination component includes an EDI device and a desalting water tank. The EDI device is arranged above the base, and the desalting water tank is arranged above the base, and the EDI device and the desalting water tank are connected through a delivery pipe.

[0005] Preferably, the water from the production water system is transported to the pretreatment component through a delivery pipe, and the built-in filter unit of the laminated self-cleaning filter automatically performs a cleaning procedure when the pressure difference before and after the laminated self-cleaning filter or the running time reaches a set limit. The cleaning is performed one by one according to the filter unit to achieve automatic cleaning and continuous water discharge. When the transmembrane pressure difference of the ultrafiltration device exceeds a certain value or has been running for a period of time, chemical cleaning is required. An alarm signal is sent to the control room of the desalted water plant to perform chemical cleaning through the control program of the ultrafiltration device. When the pressure difference of the reverse osmosis device increases or the water flow rate and water quality of the produced water drop to a certain value, the reverse osmosis membrane is chemically cleaned to restore the performance of the reverse osmosis membrane and extend the service life of the membrane. The EDI device is controlled by different cumulative water production and water quality online monitoring instruments. When the effluent water quality does not meet the requirements, the water production is low, or the cumulative water production reaches the set water production, it stops running, and the liquid input into the desalted water tank is chemically cleaned according to the situation.

[0006] Preferably, the dosing component includes a sodium hypochlorite dosing device for a coagulant; a sodium hypochlorite dosing device for a coagulant on one side of the delivery pipe. When in use, the coagulant dosing device doses at the water inlet position of the laminated self-cleaning filter, and adds a coagulant before the raw water enters the laminated self-cleaning filter to reduce the SDI and turbidity of the raw water. The sodium hypochlorite dosing device adds sodium hypochlorite to the inlet water of the pre-ultrafiltration device to inhibit the growth of microorganisms and prevent clogging of the filter and the ultrafiltration membrane. The sodium hypochlorite dosing device adds sodium hypochlorite to the ultrafiltration device, the primary reverse osmosis device, the secondary reverse osmosis device and the EDI device to provide chemical cleaning agents for the ultrafiltration device, the primary reverse osmosis device, the secondary reverse osmosis device and the EDI device.

[0007] Preferably, the dosing component also includes a reducing agent and antiscalant dosing device and an acid and alkali dosing device; a reducing agent and antiscalant dosing device is provided on one side of the delivery pipe, and an acid and alkali dosing device is provided on one side of the delivery pipe; the antiscalant is added by the antiscalant dosing device before the influent enters the primary reverse osmosis device, so that the existence form of calcium, magnesium and other ions in the primary reverse osmosis influent changes, thereby greatly reducing the possibility of scaling during the concentration process; hydrochloric acid is added to the ultrafiltration device and the primary reverse osmosis device, as well as the secondary reverse osmosis device and the EDI device through the acid dosing device, for ultrafiltration The device provides chemical cleaning agents for the first-stage reverse osmosis device, the second-stage reverse osmosis device and the EDI device; the alkali solution is added into the ultrafiltration device, the first-stage reverse osmosis device, the second-stage reverse osmosis device and the EDI device through the alkali adding device, and the chemical cleaning agents are provided for the ultrafiltration device, the first-stage reverse osmosis device, the second-stage reverse osmosis device and the EDI device; the reducing agent is added into the reducing agent dosing device before the water enters the reverse osmosis device to reduce the oxidizing property of the reverse osmosis inlet water, so as to prevent the residual chlorine and other oxidizing substances in the water from destroying the structure of the reverse osmosis membrane and reducing the life of the reverse osmosis membrane.

[0008] Preferably, the control component includes a mounting base and a PLC controller; the mounting base is arranged above the base, and the PLC controller is arranged on one side of the mounting base. When in use, the position of the PLC controller is fixed by the mounting base, and the device is program-controlled and data converted by the PLC controller.

[0009] An integrated deionized water treatment equipment system for high-level radioactive liquid waste, comprising:

[0010] Control module, responsible for the automation control, data collection, system monitoring, alarm processing and report generation of the entire water treatment process;

[0011] The pretreatment module is used to preliminarily treat the raw water, remove large particles, suspended solids, some organic matter and microorganisms, reduce the SDI value and turbidity, and provide suitable water quality conditions for subsequent reverse osmosis and deep desalination treatment;

[0012] The reverse osmosis desalination module is used to pressurize the pretreated water through a high-pressure pump and send it to the reverse osmosis device. The selective permeability of the reverse osmosis membrane is used to remove most of the salt, organic matter, microorganisms, some colloids and other impurities in the water to achieve preliminary desalination of the water quality;

[0013] Deep desalination module is used to further remove ions and trace impurities in water on the basis of reverse osmosis desalination, thereby improving the purity of water quality;

[0014] The water delivery module is used to deliver high-purity water after deep desalination to various water use points within the sub-item through a deionized water pump to meet the water quality requirements of different processes. It is also responsible for monitoring the water quality parameters and flow rate during the delivery process to ensure the safety and stability of the water delivery process.

[0015] Preferably, the control module includes a PLC programming controller and a human-computer interaction interface; the PLC programming controller adopts a programmable controller, has water treatment system data acquisition, system flow, monitoring key operation, data acquisition, alarm system, and report printing functions, and adopts a PLC system to complete program control and data conversion functions; the human-computer interaction interface is used to provide an interactive interface for user operation control.

[0016] Preferably, the pretreatment module includes an ultrafiltration water inlet pump, an ultrafiltration water inlet tank, a coagulant dosing device, a sodium hypochlorite dosing device, a laminated self-cleaning filter, an ultrafiltration device and an ultrafiltration water production tank; the input end of the ultrafiltration water inlet tank and the water pipeline of the production system are connected to each other, and the raw water of the ultrafiltration water inlet tank is input into the laminated self-cleaning filter through the ultrafiltration water inlet pump. The material of the flow part of the pump body and the accessories are all made of 304 stainless steel. In the process of inputting the raw water into the laminated self-cleaning filter, the coagulant dosing device and the sodium hypochlorite dosing device add the coagulant and sodium hypochlorite to the water, thereby reducing the SDI and turbidity of the raw water and inhibiting the formation of microorganisms. The growth of organisms can prevent the clogging of filters and ultrafiltration membranes. The stacked self-cleaning filter contains multiple filter units. The operation of the filter is controlled by the set time or the pressure difference before and after the equipment. When the pressure difference before and after the filter or the operating time reaches the set limit, the cleaning procedure is automatically performed. The cleaning is carried out one by one according to the filter unit, which can achieve automatic cleaning and continuous water discharge. The ultrafiltration device uses the ultrafiltration membrane micropores to separate the macromolecular substances, colloids, and particles in the liquid, leaving them on one side of the membrane, while the solvent and small molecular substances can pass through the membrane to the other side, thereby achieving the purification and concentration of macromolecular substances. The ultrafiltration water production tank is made of 304 stainless steel.

[0017] Preferably, the reverse osmosis desalination module includes a first-stage reverse osmosis water supply pump, a scale inhibitor dosing device, a reductant dosing device, a first-stage reverse osmosis security filter, a first-stage reverse osmosis high-pressure pump, a first-stage reverse osmosis device, a recirculation pump and a first-stage reverse osmosis water production tank; the input end of the first-stage reverse osmosis water supply pump and the output end of the ultrafiltration water production tank are connected to each other, the input end of the first-stage reverse osmosis security filter and the output end of the first-stage reverse osmosis water supply pump are connected to each other, the input end of the first-stage reverse osmosis high-pressure pump and the output end of the first-stage reverse osmosis security filter are connected to each other, the input end of the first-stage reverse osmosis device and the output end of the first-stage reverse osmosis high-pressure pump are connected to each other, and the first-stage reverse osmosis device has two Output ends are respectively the concentrated water output end and the produced water output end. The input end of the recirculation pump is connected to the concentrated water output end of the first-stage reverse osmosis device. The input end of the first-stage reverse osmosis produced water tank is connected to the produced water output end of the first-stage reverse osmosis device. The flow-through part and accessories of the first-stage reverse osmosis high-pressure pump are made of 316 stainless steel, and the sealing method is corrosion-resistant mechanical seal. Each high-pressure pump is equipped with a frequency conversion device to ensure that the water flow rate of the high-pressure pump is adjustable and constant; the reverse osmosis desalination module also includes a second-stage reverse osmosis water pump, an acid and alkali solution dosing device, a second-stage reverse osmosis security filter, a second-stage reverse osmosis high-pressure pump, a second-stage reverse osmosis device and a second-stage reverse osmosis produced water tank; the second-stage reverse The input end of the osmosis water supply pump and the output end of the first-level reverse osmosis water production tank are connected to each other, the input end of the second-level reverse osmosis security filter and the output end of the second-level reverse osmosis water supply pump are connected to each other, the input end of the second-level anti-osmosis high-pressure pump and the output end of the second-level reverse osmosis security filter are connected to each other, the input end of the second-level reverse osmosis device and the output end of the second-level reverse osmosis high-pressure pump are connected to each other, the input end of the second-level reverse osmosis water production tank and the output end of the second-level reverse osmosis device are connected to each other, and flow measurement devices are set at the outlets of the first and second-level reverse osmosis devices. Through the remote transmission signal, it is determined whether the high-pressure pump needs to be frequency-controlled to ensure that the water production of the reverse osmosis device is constant. Sufficient interfaces and valves are provided on the water inlet and outlet main pipes of each section of the reverse osmosis device and the concentrated water and product water of the secondary reverse osmosis device, so as to be connected with the inlet and outlet pipes of the cleaning liquid during cleaning. There is a reverse osmosis device shutdown flushing water interface and an automatic valve on the reverse osmosis water inlet pipe, and an explosion-proof membrane, a check valve and a shut-off valve are installed on the reverse osmosis device production water pipe; a flow control valve is installed for the reverse osmosis concentrated water drainage to control the recovery rate of the reverse osmosis device, the reverse osmosis device is equipped with an automatic start-stop device, which can automatically flush after shutdown, an automatic flushing water valve is set on the water inlet main pipe, and sampling points are set on the reverse osmosis device production water pipe and the concentrated water pipe. The number and position of the sampling points can effectively diagnose and determine the operating status of the system.

[0018] Preferably, through multi-stage reverse osmosis treatment, impurities such as salt, organic matter, and microorganisms in the water can be effectively removed, the water purity can be improved, and the water flow rate of the high-pressure pump can be adjusted by a frequency conversion device to achieve optimization of energy consumption; at the same time, the system is equipped with automatic start and stop and delayed flushing functions, which reduces water waste and energy consumption.

[0019] Preferably, the deep desalination module includes an EDI water feed pump, an EDI safety filter, an EDI device and a desalting water tank; the input end of the EDI water feed pump and the output end of the secondary reverse osmosis water production tank are interconnected, the input end of the EDI safety filter and the output end of the EDI water feed pump are interconnected, the input end of the EDI device and the output end of the EDI safety filter are interconnected, and the input end of the desalting water tank and the output end of the EDI device are interconnected. The operation of the deep desalination module is controlled by different cumulative water production and water quality online monitoring instruments. When the effluent water quality does not meet the requirements, the water production is low, or the cumulative water production reaches the set water production, the operation is stopped and chemical cleaning is performed according to the situation.

[0020] Preferably, an integrated deionized water treatment equipment system for high-level radioactive liquid waste comprises the following steps when in operation:

[0021] S1: Control module startup: Start the entire system through the human-machine interface, and the PLC programming controller begins to initialize the system, check the equipment status of each module, and ensure that there is no fault alarm;

[0022] S2: Data collection and monitoring: The PLC programming controller starts to collect data from each sensor, including raw water quality parameters, equipment operating status, etc., to provide basic data for subsequent processing;

[0023] S3: Water from the production system is transported to the ultrafiltration water inlet tank;

[0024] S4: Coagulation and sterilization: On the ultrafiltration water inlet pipeline, add appropriate amount of coagulant and sodium hypochlorite into the water through the coagulant dosing device and the sodium hypochlorite dosing device to reduce the SDI value and turbidity of the raw water and inhibit the growth of microorganisms;

[0025] S5: Filtration treatment: The treated water first enters the laminated self-cleaning filter and is initially filtered through multiple filter units. The automatic cleaning program is automatically started according to the set time or pressure difference to ensure the filtering effect;

[0026] S6: Ultrafiltration treatment: The water treated by the self-cleaning filter then enters the ultrafiltration device; the ultrafiltration device uses the ultrafiltration membrane to intercept tiny particles, colloids, bacteria and some macromolecular organic matter in the water to further purify the water quality;

[0027] S7: Ultrafiltration water production: The water treated by the ultrafiltration device enters the ultrafiltration water production tank and waits to enter the next stage of treatment;

[0028] S8: Start the water supply pump: The first-stage reverse osmosis water supply pump delivers water from the ultrafiltration water tank to the first-stage reverse osmosis safety filter;

[0029] S9: High-pressure pump boosting: The first-stage reverse osmosis high-pressure pump boosts the pressure of the filtered water and sends it to the first-stage reverse osmosis device for desalination treatment;

[0030] S10: The recirculation pump keeps water circulating when the system is started or at low flow to prevent the reverse osmosis membrane from drying out; the desalinated water is collected in the primary reverse osmosis water tank;

[0031] S11: Repeat the first-stage reverse osmosis process, but use more precise equipment and reagents (such as acid and alkali solution) to further improve water quality;

[0032] S12: The secondary reverse osmosis water is collected in the secondary reverse osmosis water tank for subsequent deep desalination;

[0033] S13: Water feed pump starts: The EDI water feed pump delivers water from the secondary reverse osmosis water tank to the EDI security filter for final filtration;

[0034] S14: EDI device treatment: Through the EDI device, electrodialysis and ion exchange technology are used to further remove ions and impurities in the water and improve the water purity;

[0035] S15: Demineralized water collection: The treated high-purity water is collected in the demineralized water tank and prepared to be sent to various water use points;

[0036] S16: Water delivery module starts: the deionized water pump starts to deliver the deionized water in the deionized water tank to each water point in the sub-item through the pipeline;

[0037] S17: System monitoring and adjustment: The PLC programming controller monitors the operating status and water quality parameters of the entire system in real time, and adjusts equipment parameters according to feedback data to ensure stable operation of the system and compliance of effluent water quality.

[0038] Beneficial effects of the present invention:

[0039] 1. Compared with the existing high-level radioactive waste deionized water treatment system, which uses a single treatment process and is difficult to effectively remove various impurities and ions in the water, this system uses multi-stage filtration and two-stage reverse osmosis treatment, combined with EDI device 401 for deep desalination, which can effectively remove salt, organic matter, microorganisms and trace impurities in the water, and significantly improve the purity and stability of water quality;

[0040] 2. Add appropriate amount of coagulant and sodium hypochlorite to the water through the coagulant dosing device and the sodium hypochlorite dosing device to reduce the SDI value and turbidity of the raw water and inhibit the growth of microorganisms; the treated water enters the laminated self-cleaning filter and is filtered through multiple filter units. The automatic cleaning program is automatically started according to the set time or pressure difference to ensure the filtering effect; the filtered water enters the ultrafiltration water production tank and waits to enter the next stage of treatment; the first-level reverse osmosis water supply pump transports the water in the ultrafiltration water production tank to the first-level reverse osmosis security filter; the first-level reverse osmosis high-pressure pump pressurizes the filtered water and sends it to the first-level reverse osmosis device for desalination treatment; the recirculation pump starts at system startup or low pressure. Keep water circulation during flow to prevent the reverse osmosis membrane from drying out; collect desalinated water into the primary reverse osmosis water tank; repeat the primary reverse osmosis process, but use higher precision equipment and reagents to further improve water quality; collect secondary reverse osmosis water into the secondary reverse osmosis water tank for subsequent deep desalination; the EDI feed pump transports the water in the secondary reverse osmosis water tank to the EDI security filter for final filtration; use the EDI device, electrodialysis and ion exchange technology to further remove ions and impurities in the water and improve water purity; thus, it can effectively remove salt, organic matter, microorganisms and trace impurities in the water, significantly improving the purity and stability of the water quality;

[0041] 3. The programmable controller is adopted through the PLC programming controller, which has the functions of water treatment system data acquisition, system flow, monitoring key operation, data acquisition, alarm system, and report printing. The PLC system is used to complete program control and data conversion functions; the human-computer interaction interface is used to provide an interactive interface for user operation control. By integrating the PLC programming controller and the human-computer interaction interface, the automatic control of the system is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the integrated deionized water treatment equipment for high-level radioactive liquid waste of the present invention;

[0043] Figure 2 Shown is a schematic diagram of the working process of the integrated deionized water treatment system for high-level radioactive waste of the present invention;

[0044] Figure 3 Shown is a schematic diagram of the working steps of the integrated deionized water treatment system for high-level radioactive liquid waste of the present invention;

[0045] Explanation of the reference numerals: 1. base; 201. laminated self-cleaning filter; 202. ultrafiltration device; 301. primary reverse osmosis device; 302. secondary reverse osmosis device; 401. EDI device; 402. desalted water tank; 501. coagulant sodium hypochlorite dosing device; 502. reductant antiscalant dosing device; 503. acid and alkali dosing device; 6. delivery pipe; 701. mounting base; 702. PLC controller. DETAILED DESCRIPTION

[0046] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0047] See also Figure 1-Figure 3 The present invention provides an embodiment: an integrated deionized water treatment device for high-level radioactive waste liquid, comprising a base 1, a delivery pipe 6, a pretreatment component, a desalination component, a desalination component, a dosing component and a control component; a delivery pipe 6 is arranged above the base 1, and the delivery pipe 6 is arranged in multiple groups, a pretreatment component is arranged above the base 1, a desalination component is arranged above the base 1, a desalination component is arranged above the base 1, a dosing component is arranged above the base 1, the pretreatment component and the desalination component are connected through the delivery pipe 6, the desalination component and the desalination component are connected through the delivery pipe 6, and a control component is arranged above the base 1; the pretreatment component comprises a laminated self-cleaning filter 201 and an ultrafiltration device 202, a laminated self-cleaning filter 201 is arranged above the base 1, an ultrafiltration device 202 is arranged above the base 1, and the laminated self-cleaning filter 201 and the ultrafiltration device 202 are connected by a conveying pipe 6; the desalination component includes a primary reverse osmosis device 301 and a secondary reverse osmosis device 302; a primary reverse osmosis device 301 is arranged above the base 1, and a secondary reverse osmosis device 302 is arranged above the base 1; the desalination component includes an EDI device 401 and a desalting water tank 402, an EDI device 401 is arranged above the base 1, a desalting water tank 402 is arranged above the base 1, and the EDI device 401 and the desalting water tank 402 are connected by a conveying pipe 6.

[0048] Preferably, the water from the production water system is transported to the pretreatment component through the delivery pipe 6, and the built-in filter unit of the laminated self-cleaning filter 201 automatically performs a cleaning procedure when the pressure difference before and after the laminated self-cleaning filter 201 or the operating time reaches the set limit. The cleaning is performed one by one according to the filter unit to achieve automatic cleaning and continuous water discharge. When the transmembrane pressure difference of the ultrafiltration device 202 exceeds a certain value or has been running for a period of time, chemical cleaning is required. An alarm signal is sent to the control room of the desalted water plant to perform chemical cleaning through the control program of the ultrafiltration device 202. When the pressure difference of the reverse osmosis device increases or the water flow rate and water quality of the produced water drop to a certain value, the reverse osmosis membrane is chemically cleaned to restore the performance of the reverse osmosis membrane and extend the service life of the membrane. The EDI device 401 is controlled by different cumulative water production and water quality online monitoring instruments. When the effluent water quality does not meet the requirements, the water production is low, or the cumulative water production reaches the set water production, it stops running, and the liquid input into the desalted water tank 402 is chemically cleaned according to the situation.

[0049] Preferably, the dosing component includes a sodium hypochlorite dosing device 501 for a coagulant; the sodium hypochlorite dosing device 501 for a coagulant is on one side of the delivery pipe 6. When in use, the coagulant dosing device performs dosing at the water inlet position of the laminated self-cleaning filter 201, and adds a coagulant before the raw water enters the laminated self-cleaning filter 201 to reduce the SDI and turbidity of the raw water. The sodium hypochlorite dosing device adds sodium hypochlorite to the inlet water of the pre-ultrafiltration device 202 to inhibit the growth of microorganisms and prevent clogging of the filter and the ultrafiltration membrane. The sodium hypochlorite dosing device adds sodium hypochlorite to the ultrafiltration device 202, the first reverse osmosis device 301, the second reverse osmosis device 302, and the EDI device 401 to provide chemical cleaning agents for the ultrafiltration device 202, the first reverse osmosis device 301, the second reverse osmosis device 302, and the EDI device 401.

[0050] Preferably, the dosing component also includes a reducing agent and antiscalant dosing device 502 and an acid and alkali dosing device 503; a reducing agent and antiscalant dosing device 502 is provided on one side of the delivery pipe 6, and an acid and alkali dosing device 503 is provided on one side of the delivery pipe 6; the antiscalant is added by the antiscalant dosing device before the influent enters the primary reverse osmosis device 301, so that the existence form of calcium, magnesium and other ions in the primary reverse osmosis influent changes, thereby greatly reducing the possibility of scaling during the concentration process, and hydrochloric acid is added to the ultrafiltration device 202 and the primary reverse osmosis device 301 and the secondary reverse osmosis device 302 and the EDI device 401 through the acid dosing device, so that the ultrafiltration device 2 02. Chemical cleaning agents are provided to the primary reverse osmosis device 301, the secondary reverse osmosis device 302, and the EDI device 401. Alkali solution is added to the ultrafiltration device 202 and the primary reverse osmosis device 301, the secondary reverse osmosis device 302, and the EDI device 401 through the alkali adding device, so as to provide chemical cleaning agents for the ultrafiltration device 202, the primary reverse osmosis device 301, the secondary reverse osmosis device 302, and the EDI device 401. Reductant is added through the reducing agent dosing device before the water enters the reverse osmosis device to reduce the oxidizing property of the reverse osmosis inlet water, so as to prevent oxidizing substances such as residual chlorine in the water from damaging the structure of the reverse osmosis membrane and reducing the life of the reverse osmosis membrane.

[0051] Preferably, the control component includes a mounting base 701 and a PLC controller 702; the mounting base 701 is arranged above the base 1, and the PLC controller 702 is arranged on one side of the mounting base 701. When in use, the position of the PLC controller 702 is fixed by the mounting base 701, and the device is program-controlled and data converted by the PLC controller 702.

[0052] An integrated deionized water treatment equipment system for high-level radioactive liquid waste, comprising:

[0053] Control module, responsible for the automation control, data collection, system monitoring, alarm processing and report generation of the entire water treatment process;

[0054] The pretreatment module is used to preliminarily treat the raw water, remove large particles, suspended solids, some organic matter and microorganisms, reduce the SDI value and turbidity, and provide suitable water quality conditions for subsequent reverse osmosis and deep desalination treatment;

[0055] The reverse osmosis desalination module is used to pressurize the pretreated water through a high-pressure pump and send it to the reverse osmosis device. The selective permeability of the reverse osmosis membrane is used to remove most of the salt, organic matter, microorganisms, some colloids and other impurities in the water to achieve preliminary desalination of the water quality;

[0056] Deep desalination module is used to further remove ions and trace impurities in water on the basis of reverse osmosis desalination, thereby improving the purity of water quality;

[0057] The water delivery module is used to deliver high-purity water after deep desalination to various water use points within the sub-item through a deionized water pump to meet the water quality requirements of different processes. It is also responsible for monitoring the water quality parameters and flow rate during the delivery process to ensure the safety and stability of the water delivery process.

[0058] Preferably, the control module includes a PLC programming controller and a human-computer interaction interface; the PLC programming controller adopts a programmable controller, has water treatment system data acquisition, system flow, monitoring key operation, data acquisition, alarm system, and report printing functions, and adopts a PLC system to complete program control and data conversion functions; the human-computer interaction interface is used to provide an interactive interface for user operation control.

[0059] Preferably, the pretreatment module includes an ultrafiltration water inlet pump, an ultrafiltration water inlet tank, a coagulant dosing device, a sodium hypochlorite dosing device, a laminated self-cleaning filter, an ultrafiltration device and an ultrafiltration water production tank; the input end of the ultrafiltration water inlet tank and the water pipeline of the production system are connected to each other, and the raw water of the ultrafiltration water inlet tank is input into the laminated self-cleaning filter through the ultrafiltration water inlet pump. The material of the flow part of the pump body and the accessories are all made of 304 stainless steel. In the process of inputting the raw water into the laminated self-cleaning filter, the coagulant dosing device and the sodium hypochlorite dosing device add the coagulant and sodium hypochlorite to the water, thereby reducing the SDI and turbidity of the raw water and inhibiting the formation of microorganisms. The growth of organisms can prevent the clogging of filters and ultrafiltration membranes. The stacked self-cleaning filter contains multiple filter units. The operation of the filter is controlled by the set time or the pressure difference before and after the equipment. When the pressure difference before and after the filter or the operating time reaches the set limit, the cleaning procedure is automatically performed. The cleaning is carried out one by one according to the filter unit, which can achieve automatic cleaning and continuous water discharge. The ultrafiltration device uses the ultrafiltration membrane micropores to separate the macromolecular substances, colloids, and particles in the liquid, leaving them on one side of the membrane, while the solvent and small molecular substances can pass through the membrane to the other side, thereby achieving the purification and concentration of macromolecular substances. The ultrafiltration water production tank is made of 304 stainless steel.

[0060] Preferably, the reverse osmosis desalination module includes a first-stage reverse osmosis water supply pump, a scale inhibitor dosing device, a reductant dosing device, a first-stage reverse osmosis security filter, a first-stage reverse osmosis high-pressure pump, a first-stage reverse osmosis device, a recirculation pump and a first-stage reverse osmosis water production tank; the input end of the first-stage reverse osmosis water supply pump and the output end of the ultrafiltration water production tank are connected to each other, the input end of the first-stage reverse osmosis security filter and the output end of the first-stage reverse osmosis water supply pump are connected to each other, the input end of the first-stage reverse osmosis high-pressure pump and the output end of the first-stage reverse osmosis security filter are connected to each other, the input end of the first-stage reverse osmosis device and the output end of the first-stage reverse osmosis high-pressure pump are connected to each other, and the first-stage reverse osmosis device has two Output ends are respectively the concentrated water output end and the produced water output end. The input end of the recirculation pump is connected to the concentrated water output end of the first-stage reverse osmosis device. The input end of the first-stage reverse osmosis produced water tank is connected to the produced water output end of the first-stage reverse osmosis device. The flow-through part and accessories of the first-stage reverse osmosis high-pressure pump are made of 316 stainless steel, and the sealing method is corrosion-resistant mechanical seal. Each high-pressure pump is equipped with a frequency conversion device to ensure that the water flow rate of the high-pressure pump is adjustable and constant; the reverse osmosis desalination module also includes a second-stage reverse osmosis water pump, an acid and alkali solution dosing device, a second-stage reverse osmosis security filter, a second-stage reverse osmosis high-pressure pump, a second-stage reverse osmosis device and a second-stage reverse osmosis produced water tank; the second-stage reverse The input end of the osmosis water supply pump and the output end of the first-level reverse osmosis water production tank are connected to each other, the input end of the second-level reverse osmosis security filter and the output end of the second-level reverse osmosis water supply pump are connected to each other, the input end of the second-level anti-osmosis high-pressure pump and the output end of the second-level reverse osmosis security filter are connected to each other, the input end of the second-level reverse osmosis device and the output end of the second-level reverse osmosis high-pressure pump are connected to each other, the input end of the second-level reverse osmosis water production tank and the output end of the second-level reverse osmosis device are connected to each other, and flow measurement devices are set at the outlets of the first and second-level reverse osmosis devices. Through the remote transmission signal, it is determined whether the high-pressure pump needs to be frequency-controlled to ensure that the water production of the reverse osmosis device is constant. Sufficient interfaces and valves are provided on the water inlet and outlet main pipes of each section of the reverse osmosis device and the concentrated water and product water of the secondary reverse osmosis device, so as to be connected with the inlet and outlet pipes of the cleaning liquid during cleaning. There is a reverse osmosis device shutdown flushing water interface and an automatic valve on the reverse osmosis water inlet pipe, and an explosion-proof membrane, a check valve and a shut-off valve are installed on the reverse osmosis device production water pipe; a flow control valve is installed for the reverse osmosis concentrated water drainage to control the recovery rate of the reverse osmosis device, the reverse osmosis device is equipped with an automatic start-stop device, which can automatically flush after shutdown, an automatic flushing water valve is set on the water inlet main pipe, and sampling points are set on the reverse osmosis device production water pipe and the concentrated water pipe. The number and position of the sampling points can effectively diagnose and determine the operating status of the system.

[0061] Preferably, through multi-stage reverse osmosis treatment, impurities such as salt, organic matter, and microorganisms in the water can be effectively removed, the water purity can be improved, and the water flow rate of the high-pressure pump can be adjusted by a frequency conversion device to achieve optimization of energy consumption; at the same time, the system is equipped with automatic start and stop and delayed flushing functions, which reduces water waste and energy consumption.

[0062] Preferably, the deep desalination module includes an EDI water feed pump, an EDI safety filter, an EDI device and a desalting water tank; the input end of the EDI water feed pump and the output end of the secondary reverse osmosis water production tank are interconnected, the input end of the EDI safety filter and the output end of the EDI water feed pump are interconnected, the input end of the EDI device and the output end of the EDI safety filter are interconnected, and the input end of the desalting water tank and the output end of the EDI device are interconnected. The operation of the deep desalination module is controlled by different cumulative water production and water quality online monitoring instruments. When the effluent water quality does not meet the requirements, the water production is low, or the cumulative water production reaches the set water production, the operation is stopped and chemical cleaning is performed according to the situation.

[0063] Preferably, an integrated deionized water treatment equipment system for high-level radioactive liquid waste comprises the following steps when in operation:

[0064] S1: Control module startup: Start the entire system through the human-machine interface, and the PLC programming controller begins to initialize the system, check the equipment status of each module, and ensure that there is no fault alarm;

[0065] S2: Data collection and monitoring: The PLC programming controller starts to collect data from each sensor, including raw water quality parameters, equipment operating status, etc., to provide basic data for subsequent processing;

[0066] S3: Water from the production system is transported to the ultrafiltration water inlet tank;

[0067] S4: Coagulation and sterilization: On the ultrafiltration water inlet pipeline, add appropriate amount of coagulant and sodium hypochlorite into the water through the coagulant dosing device and the sodium hypochlorite dosing device to reduce the SDI value and turbidity of the raw water and inhibit the growth of microorganisms;

[0068] S5: Filtration treatment: The treated water first enters the laminated self-cleaning filter and is initially filtered through multiple filter units. The automatic cleaning program is automatically started according to the set time or pressure difference to ensure the filtering effect;

[0069] S6: Ultrafiltration treatment: The water treated by the self-cleaning filter then enters the ultrafiltration device; the ultrafiltration device uses the ultrafiltration membrane to intercept tiny particles, colloids, bacteria and some macromolecular organic matter in the water to further purify the water quality;

[0070] S7: Ultrafiltration water production: The water treated by the ultrafiltration device enters the ultrafiltration water production tank and waits to enter the next stage of treatment;

[0071] S8: Start the water supply pump: The first-stage reverse osmosis water supply pump delivers water from the ultrafiltration water tank to the first-stage reverse osmosis safety filter;

[0072] S9: High-pressure pump boosting: The first-stage reverse osmosis high-pressure pump boosts the pressure of the filtered water and sends it to the first-stage reverse osmosis device for desalination treatment;

[0073] S10: The recirculation pump keeps water circulating when the system is started or at low flow to prevent the reverse osmosis membrane from drying out; the desalinated water is collected in the primary reverse osmosis water tank;

[0074] S11: Repeat the first-stage reverse osmosis process, but use more precise equipment and reagents (such as acid and alkali solution) to further improve water quality;

[0075] S12: The secondary reverse osmosis water is collected in the secondary reverse osmosis water tank for subsequent deep desalination;

[0076] S13: Water feed pump starts: The EDI water feed pump delivers water from the secondary reverse osmosis water tank to the EDI security filter for final filtration;

[0077] S14: EDI device treatment: Through the EDI device, electrodialysis and ion exchange technology are used to further remove ions and impurities in the water and improve the water purity;

[0078] S15: Demineralized water collection: The treated high-purity water is collected in the demineralized water tank and prepared to be sent to various water use points;

[0079] S16: Water delivery module starts: the deionized water pump starts to deliver the deionized water in the deionized water tank to each water point in the sub-item through the pipeline;

[0080] S17: System monitoring and adjustment: The PLC programming controller monitors the operating status and water quality parameters of the entire system in real time, and adjusts equipment parameters according to feedback data to ensure stable operation of the system and compliance of effluent water quality.

[0081] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. An integrated deionized water treatment device for high-level radioactive liquid waste, comprising a base (1); characterized in that: It also includes a delivery pipe (6), a pretreatment component, a desalination component, a desalination component, a dosing component and a control component; a delivery pipe (6) is arranged above the base (1), and a plurality of delivery pipes (6) are arranged; a pretreatment component is arranged above the base (1), a desalination component is arranged above the base (1), a desalination component is arranged above the base (1), a dosing component is arranged above the base (1), the pretreatment component and the desalination component are connected via the delivery pipe (6), the desalination component and the desalination component are connected via the delivery pipe (6), and a control component is arranged above the base (1); the pretreatment component includes a laminated self-cleaning filter (201) and an ultrafiltration device (202), a laminated self-cleaning filter (201) is arranged above the base (1), and a plurality of delivery pipes (6) are arranged above the base (1). 201), an ultrafiltration device (202) is arranged above the base (1), and the laminated self-cleaning filter (201) and the ultrafiltration device (202) are connected via a delivery pipe (6); the desalination component comprises a primary reverse osmosis device (301) and a secondary reverse osmosis device (302); the primary reverse osmosis device (301) is arranged above the base (1), and the secondary reverse osmosis device (302) is arranged above the base (1); the desalination component comprises an EDI device (401) and a desalting water tank (402), the EDI device (401) is arranged above the base (1), and the desalting water tank (402) is arranged above the base (1), and the EDI device (401) and the desalting water tank (402) are connected via a delivery pipe (6).

2. The integrated deionized water treatment equipment for high-level radioactive liquid waste according to claim 1, characterized in that: The dosing component comprises a coagulant sodium hypochlorite dosing device (501); a coagulant sodium hypochlorite dosing device (501) on one side of the delivery pipe (6).

3. The integrated deionized water treatment equipment for high-level radioactive liquid waste according to claim 2, characterized in that: The dosing component also includes a reducing agent and antiscalant dosing device (502) and an acid and alkali dosing device (503); the reducing agent and antiscalant dosing device (502) is arranged on one side of the delivery pipe (6), and the acid and alkali dosing device (503) is arranged on one side of the delivery pipe (6).

4. The integrated deionized water treatment equipment for high-level radioactive liquid waste according to claim 1, characterized in that: The control component comprises a mounting seat (701) and a PLC controller (702); the mounting seat (701) is arranged above the base (1), and the PLC controller (702) is arranged on one side of the mounting seat (701).

5. An integrated deionized water treatment equipment system for high-level radioactive liquid waste, characterized in that: Included are: Control module, responsible for the automation control, data collection, system monitoring, alarm processing and report generation of the entire water treatment process; The pretreatment module is used to preliminarily treat the raw water, remove large particles, suspended solids, some organic matter and microorganisms, reduce the SDI value and turbidity, and provide suitable water quality conditions for subsequent reverse osmosis and deep desalination treatment; The reverse osmosis desalination module is used to pressurize the pretreated water through a high-pressure pump and send it to the reverse osmosis device. The selective permeability of the reverse osmosis membrane is used to remove most of the salt, organic matter, microorganisms, some colloids and other impurities in the water to achieve preliminary desalination of the water quality; Deep desalination module is used to further remove ions and trace impurities in water on the basis of reverse osmosis desalination, thereby improving the purity of water quality; The water delivery module is used to deliver high-purity water after deep desalination to various water use points within the sub-item through a deionized water pump to meet the water quality requirements of different processes. It is also responsible for monitoring the water quality parameters and flow rate during the delivery process to ensure the safety and stability of the water delivery process.

6. The integrated deionized water treatment system for high-level radioactive liquid waste according to claim 5, characterized in that: The control module includes a PLC programming controller and a human-computer interaction interface; the PLC programming controller adopts a programmable controller, which has the functions of water treatment system data acquisition, system flow, monitoring key operation, data acquisition, alarm system, and report printing. The PLC system is used to complete program control and data conversion functions; the human-computer interaction interface is used to provide an interactive interface for user operation control.

7. The integrated deionized water treatment system for high-level radioactive liquid waste according to claim 6, characterized in that: The pretreatment module includes an ultrafiltration water inlet pump, an ultrafiltration water inlet tank, a coagulant dosing device, a sodium hypochlorite dosing device, a laminated self-cleaning filter, an ultrafiltration device and an ultrafiltration water production tank; the input end of the ultrafiltration water inlet tank is connected to the water pipeline of the production system, and the raw water of the ultrafiltration water inlet tank is input into the laminated self-cleaning filter through the ultrafiltration water inlet pump. The material of the pump body flow part and accessories are all made of 304 stainless steel. In the process of raw water being input into the laminated self-cleaning filter, the coagulant dosing device and the sodium hypochlorite dosing device add coagulant and sodium hypochlorite to the water, thereby reducing the SDI and turbidity of the raw water and inhibiting the growth of microorganisms. Growth, prevent filter and ultrafiltration membrane clogging, the stacked self-cleaning filter contains multiple filter units, the operation of the filter is controlled by the set time or the pressure difference before and after the equipment, when the pressure difference before and after the filter or the running time reaches the set limit, the cleaning procedure is automatically performed, and the cleaning is carried out one by one according to the filter unit, which can realize automatic cleaning and continuous water output. The ultrafiltration device uses the ultrafiltration membrane micropores to separate the macromolecular substances, colloids, and particles in the liquid, so that they remain on one side of the membrane, while the solvent and small molecular substances can pass through the membrane to the other side, thereby realizing the purification and concentration of macromolecular substances. The ultrafiltration water production tank is made of 304 stainless steel.

8. The integrated deionized water treatment system for high-level radioactive liquid waste according to claim 7, characterized in that: The reverse osmosis desalination module includes a first-stage reverse osmosis water supply pump, a scale inhibitor dosing device, a reducing agent dosing device, a first-stage reverse osmosis safety filter, a first-stage reverse osmosis high-pressure pump, a first-stage reverse osmosis device, a recirculation pump and a first-stage reverse osmosis water production tank; the input end of the first-stage reverse osmosis water supply pump and the output end of the ultrafiltration water production tank are connected to each other, the input end of the first-stage reverse osmosis safety filter and the output end of the first-stage reverse osmosis water supply pump are connected to each other, the input end of the first-stage reverse osmosis high-pressure pump and the output end of the first-stage reverse osmosis safety filter are connected to each other, the input end of the first-stage reverse osmosis device and the output end of the first-stage reverse osmosis high-pressure pump are connected to each other, and the first-stage reverse osmosis device has two output The first reverse osmosis high-pressure pump has two ends, namely, the concentrated water output end and the produced water output end. The input end of the recirculation pump is connected to the concentrated water output end of the first-stage reverse osmosis device. The input end of the first-stage reverse osmosis produced water tank is connected to the produced water output end of the first-stage reverse osmosis device. The flow-through part and accessories of the first-stage reverse osmosis high-pressure pump are made of 316 stainless steel, and the sealing method is corrosion-resistant mechanical seal. Each high-pressure pump is equipped with a frequency conversion device to ensure that the water flow rate of the high-pressure pump is adjustable and constant. The reverse osmosis desalination module also includes a second-stage reverse osmosis water pump, an acid and alkali solution dosing device, a second-stage reverse osmosis security filter, a second-stage reverse osmosis high-pressure pump, a second-stage reverse osmosis device and a second-stage reverse osmosis produced water tank. The second-stage reverse osmosis The input end of the water supply pump is connected to the output end of the primary reverse osmosis water production tank, the input end of the secondary reverse osmosis safety filter is connected to the output end of the secondary reverse osmosis water supply pump, the input end of the secondary anti-osmosis high-pressure pump is connected to the output end of the secondary reverse osmosis safety filter, the input end of the secondary reverse osmosis device is connected to the output end of the secondary reverse osmosis high-pressure pump, the input end of the secondary reverse osmosis water production tank is connected to the output end of the secondary reverse osmosis device, and the flow measurement device is set at the outlet of the primary and secondary reverse osmosis devices. Through its remote transmission signal, it is determined whether the high-pressure pump needs to be frequency-controlled to ensure that the water output of the reverse osmosis device is constant. The primary reverse osmosis device Sufficient interfaces and valves are provided on the water inlet and outlet main pipes of each section of the device and the secondary reverse osmosis device, as well as the concentrated water and product water, so as to be connected to the inlet and outlet pipes of the cleaning liquid during cleaning. There is a reverse osmosis device shutdown flushing water interface and an automatic valve on the reverse osmosis water inlet pipe, and an explosion-proof membrane, a check valve and a shut-off valve are installed on the reverse osmosis device production water pipe; a flow control valve is installed for the reverse osmosis concentrated water drainage to control the recovery rate of the reverse osmosis device, the reverse osmosis device is equipped with an automatic start-stop device, which can automatically flush after being shut down, an automatic flushing water valve is set on the water inlet main pipe, and sampling points are set on the reverse osmosis device production water pipe and concentrated water pipe. The number and location of the sampling points can effectively diagnose and determine the operating status of the system.

9. The integrated deionized water treatment system for high-level radioactive liquid waste according to claim 8, characterized in that: The deep desalination module includes an EDI water supply pump, an EDI safety filter, an EDI device and a desalting water tank; the input end of the EDI water supply pump and the output end of the secondary reverse osmosis water production tank are interconnected, the input end of the EDI safety filter and the output end of the EDI water supply pump are interconnected, the input end of the EDI device and the output end of the EDI safety filter are interconnected, and the input end of the desalting water tank and the output end of the EDI device are interconnected. The operation of the deep desalination module is controlled by different cumulative water production and water quality online monitoring instruments. When the effluent water quality does not meet the requirements, the water production is low, or the cumulative water production reaches the set water production, the operation is stopped and chemical cleaning is performed according to the situation.

10. The integrated deionized water treatment system for high-level radioactive liquid waste according to claim 9, characterized in that: An integrated deionized water treatment equipment system for high-level radioactive waste is working. The following steps are involved: S1: Control module startup: Start the entire system through the human-machine interface, and the PLC programming controller begins to initialize the system, check the equipment status of each module, and ensure that there is no fault alarm; S2: Data collection and monitoring: The PLC programming controller starts to collect data from each sensor, including raw water quality parameters, equipment operating status, etc., to provide basic data for subsequent processing; S3: Water from the production system is transported to the ultrafiltration water inlet tank; S4: Coagulation and sterilization: On the ultrafiltration water inlet pipeline, add appropriate amount of coagulant and sodium hypochlorite into the water through the coagulant dosing device and the sodium hypochlorite dosing device to reduce the SDI value and turbidity of the raw water and inhibit the growth of microorganisms; S5: Filtration treatment: The treated water first enters the laminated self-cleaning filter and is initially filtered through multiple filter units. The automatic cleaning program is automatically started according to the set time or pressure difference to ensure the filtering effect; S6: Ultrafiltration treatment: The water treated by the self-cleaning filter then enters the ultrafiltration device; the ultrafiltration device uses the ultrafiltration membrane to intercept tiny particles, colloids, bacteria and some macromolecular organic matter in the water to further purify the water quality; S7: Ultrafiltration water production: The water treated by the ultrafiltration device enters the ultrafiltration water production tank and waits to enter the next stage of treatment; S8: Start the water supply pump: The first-stage reverse osmosis water supply pump delivers water from the ultrafiltration water tank to the first-stage reverse osmosis safety filter; S9: High-pressure pump boosting: The first-stage reverse osmosis high-pressure pump boosts the pressure of the filtered water and sends it to the first-stage reverse osmosis device for desalination treatment; S10: The recirculation pump keeps water circulating when the system is started or at low flow to prevent the reverse osmosis membrane from drying out; the desalinated water is collected in the primary reverse osmosis water tank; S11: Repeat the first-stage reverse osmosis process, but use more precise equipment and reagents (such as acid and alkali solution) to further improve water quality; S12: The secondary reverse osmosis water is collected in the secondary reverse osmosis water tank for subsequent deep desalination; S13: Water feed pump starts: The EDI water feed pump delivers water from the secondary reverse osmosis water tank to the EDI security filter for final filtration; S14: EDI device treatment: Through the EDI device, electrodialysis and ion exchange technology are used to further remove ions and impurities in the water and improve the water purity; S15: Demineralized water collection: The treated high-purity water is collected in the demineralized water tank and prepared to be sent to various water use points; S16: Water delivery module starts: the deionized water pump starts to deliver the deionized water in the deionized water tank to each water point in the sub-item through the pipeline; S17: System monitoring and adjustment: The PLC programming controller monitors the operating status and water quality parameters of the entire system in real time, and adjusts equipment parameters according to feedback data to ensure stable operation of the system and compliance of effluent water quality.

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