Sea water desalination auxiliary system capable of reducing burden of dialysis membrane

Abstract

The invention belongs to the technical field of seawater desalination assistance, and particularly relates to a seawater desalination assistance system capable of relieving the burden of a dialysis membrane, the seawater desalination assistance system comprises an electrolytic tank, a first channel, a second channel and a third channel are arranged in the electrolytic tank from left to right in sequence, and the first channel and the second channel are separated by an anion exchange membrane; the channel II and the channel III are separated by a cation exchange membrane, seawater enters and is discharged from two sections of the channel I, the channel II and the channel III through pipelines and electric control valves, and a water electrolysis device is mounted between the channel I and the channel III. The seawater desalination auxiliary system has the remarkable beneficial effects that firstly, the innovative multi-channel design is combined with the ion exchange membrane, so that the burden of the dialysis membrane is effectively relieved, the service life of the membrane is prolonged, the maintenance cost is reduced, meanwhile, the water electrolysis device and the control system cooperatively operate, accurate regulation and control can be realized according to the real-time state of seawater, and the service life of the membrane is prolonged. The seawater desalination efficiency is greatly improved, and the energy consumption is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of seawater desalination assistance, and in particular to a seawater desalination assistance system for alleviating the burden on a dialysis membrane. Background Art

[0002] With the growth of global population and economic development, the demand for fresh water resources is increasing. However, the fresh water resources on the earth are unevenly distributed, and many regions are facing serious water shortage problems.

[0003] As the most abundant water resource on earth, desalination of seawater has become one of the important ways to solve the problem of fresh water shortage.

[0004] Although the current common seawater desalination technologies such as reverse osmosis and distillation can achieve seawater desalination to a certain extent, they also have some limitations.

[0005] For example, reverse osmosis requires higher pressure and consumes more energy; distillation consumes a lot of energy and has higher equipment costs.

[0006] In addition, the dialysis membranes in these traditional technologies are often under heavy loads, easily damaged, and require frequent replacement, which increases operating costs.

[0007] Requirements for new seawater desalination auxiliary systems:

[0008] The importance of reducing the burden on dialysis membranes

[0009] Dialysis membrane is a key component in the seawater desalination process, and its performance directly affects the effect and cost of seawater desalination.

[0010] Advantages of multi-channel design:

[0011] The desalination auxiliary system adopts an electrolytic cell design, with channel 1, channel 2 and channel 3 set inside. This multi-channel design can divide the desalination process into multiple stages, gradually realizing the separation and removal of ions.

[0012] The function of water electrolysis device:

[0013] The water electrolysis device installed in the system can promote the movement of ions between exchange membranes through the electric field generated by the electrodes, thereby accelerating the desalination of seawater.

[0014] Importance of control system:

[0015] In order to ensure the stable operation and efficient performance of the seawater desalination auxiliary system, this system is also equipped with a control system.

[0016] The control system monitors the state parameters of seawater in each channel in real time through a sensor group, and automatically adjusts the current intensity of the water electrolysis device and the switching time of the electric control valve according to preset parameters. Summary of the invention

[0017] 1. Technical issues to be resolved

[0018] In view of the deficiencies of the prior art, the present invention provides a seawater desalination auxiliary system that reduces the burden on dialysis membranes, thereby solving the problems raised in the above-mentioned background technology.

[0019] (II) Technical solution

[0020] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0021] A seawater desalination auxiliary system for reducing the burden on a dialysis membrane comprises an electrolytic cell, wherein channel one, channel two and channel three are arranged from left to right, channel one and channel two are separated by an anion exchange membrane, channel two and channel three are separated by a cation exchange membrane, seawater is introduced into and discharged from channel one, channel two and channel three through pipelines and electric control valves, and a water electrolysis device is installed between channel one and channel three.

[0022] Furthermore, the water electrolysis device includes an anode and a cathode, the anode is arranged on the side of the channel one close to the anion exchange membrane, and the cathode is arranged on the side of the channel three close to the cation exchange membrane, and the electric field generated by the electrodes promotes the movement of ions between the exchange membranes.

[0023] Furthermore, the anode and cathode are made of nickel-based alloy materials to prevent corrosion during the electrolysis of seawater.

[0024] Furthermore, the system also includes a control system, which is electrically connected to the water electrolysis device and the electric control valve, and is used to control the current intensity of the water electrolysis device and the switching time of the electric control valve according to preset parameters to optimize the seawater desalination process.

[0025] Furthermore, the control system is equipped with a sensor group, including a salinity sensor, a temperature sensor and a pressure sensor, for real-time monitoring of the state parameters of seawater in each channel and feeding the data back to the control system for precise adjustment.

[0026] A method for using a seawater desalination auxiliary system for reducing the burden on a dialysis membrane comprises the following steps:

[0027] S1: Electrolytic cell preparation:

[0028] Design and manufacture the electrolytic cell, determine its size and shape, and ensure that it can accommodate channel one, channel two and channel three as well as the ion exchange membrane and the water electrolysis device;

[0029] The electrolytic cell is divided into channel one, channel two and channel three from left to right;

[0030] S2: Install ion exchange membrane:

[0031] Install the anion exchange membrane between channel one and channel two to ensure the sealing and stability of the membrane. It can be fixed with sealant or a fixed frame.

[0032] The cation exchange membrane is installed between channel two and channel three, and the sealing and stability are also ensured;

[0033] S3: Connecting pipes and electric control valves:

[0034] Select corrosion-resistant piping materials and connect Channels 1, 2 and 3 to the external seawater supply system and discharge system according to design requirements;

[0035] Install the electric control valve on the corresponding pipeline to ensure that the electric control valve can normally control the inflow and discharge of seawater;

[0036] S4: Install the water electrolysis device:

[0037] Select anode and cathode made of nickel-based alloy materials;

[0038] Install the anode on the side of channel 1 close to the anion exchange membrane and use a fixture to ensure its stable position;

[0039] Install the cathode on the side of channel three close to the cation exchange membrane and fix it in place;

[0040] Connect the water electrolysis device to the power supply to ensure a stable current supply;

[0041] S5: Set up the control system:

[0042] Select appropriate salinity sensor, temperature sensor and pressure sensor;

[0043] Install the sensors in channel one, channel two and channel three respectively to ensure accurate measurement of the state parameters of seawater;

[0044] Use cables and connectors to connect sensors to the control system;

[0045] Programming the control system so that it can automatically adjust the current intensity of the water electrolysis device and the switching time of the electric control valve according to the data fed back by the sensor;

[0046] S6: Debug and optimize the system:

[0047] Conduct simulation experiments to check the working conditions of various parts of the system, including the isolation effect of the ion exchange membrane, the performance of the water electrolysis device, and the response of the control system;

[0048] According to the results of the simulation experiment, the system is adjusted and optimized to ensure that it can operate stably and achieve efficient seawater desalination effect;

[0049] Test in the actual operating environment to further verify the performance and reliability of the system.

[0050] (III) Beneficial effects

[0051] Compared with the prior art, the present invention provides a seawater desalination auxiliary system that reduces the burden on dialysis membranes and has the following beneficial effects:

[0052] This seawater desalination auxiliary system has significant beneficial effects. First, its innovative multi-channel design combined with ion exchange membranes effectively reduces the burden on dialysis membranes, extends the service life of the membranes, and reduces maintenance costs. At the same time, the water electrolysis device and the control system work together to accurately control the water according to the real-time state of seawater, greatly improving the efficiency of seawater desalination and reducing energy consumption.

[0053] Secondly, it performs well in terms of system stability. The use of corrosion-resistant materials ensures the durability of key components. The coordination of sensors and control systems enables the system to adapt to various changes in seawater and stably produce high-quality fresh water, providing reliable technical support for solving the problem of water shortage.

[0054] In this seawater desalination auxiliary system, the metal ion precipitation produced after electrolysis brings significant benefits. It effectively reduces equipment scaling, allows seawater to flow smoothly in the system, reduces equipment maintenance costs, and ensures the continuity of the desalination process. At the same time, it improves the quality of fresh water, deeply removes harmful metal ions, and enhances the safety and applicability of fresh water. It can also extend the life of the system, reduce the corrosion of metal ions on components, maintain stable system performance, and play an important role in water resource utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is a schematic diagram of the process system of the present invention;

[0056] Figure 2 This is a schematic diagram of the water electrolysis system of the present invention;

[0057] Figure 3 Schematic diagram of the control system of the present invention. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] Example

[0060] like Figure 1-3 As shown, an embodiment of the present invention provides a seawater desalination auxiliary system for reducing the burden on a dialysis membrane, comprising an electrolytic cell, wherein channel one, channel two and channel three are arranged from left to right, channel one and channel two are separated by an anion exchange membrane, channel two and channel three are separated by a cation exchange membrane, channel one, channel two and channel three are connected to each other through a pipeline and an electric control valve to allow seawater to enter and be discharged, and a water electrolysis device is installed between channel one and channel three;

[0061] Multi-channel electrolytic cell

[0062] Channels 1, 2, and 3 are arranged in the electrolytic cell from left to right. This multi-channel layout provides a spatial basis for step-by-step treatment of the seawater desalination process, allowing seawater to undergo different ion exchange and treatment processes at different stages, helping to improve desalination efficiency and reduce the burden on individual components.

[0063] Channel 1 and channel 2 are separated by an anion exchange membrane, and channel 2 and channel 3 are separated by a cation exchange membrane. The selective permeability of these two ion exchange membranes is one of the key structural features of the system. The anion exchange membrane allows anions to pass through, and the cation exchange membrane allows cations to pass through, thereby achieving the gradual separation of anions and cations in seawater, avoiding a large number of ions acting on a single dialysis membrane at the same time, and effectively reducing the burden on the dialysis membrane.

[0064] Pipeline and electric control valve system

[0065] Channel 1, Channel 2 and Channel 3 are connected to the external seawater supply system and discharge system through pipelines and electric control valves. The pipeline material is corrosion-resistant to ensure long-term stable operation in seawater environment, avoid pipeline damage and leakage caused by seawater corrosion, and ensure the normal transportation and discharge of seawater.

[0066] The electric control valve is installed on the corresponding pipeline to accurately control the inflow and discharge of seawater. Through the switch operation of the electric control valve, the seawater flow rate, residence time and other parameters in each channel can be regulated to meet the needs of seawater desalination treatment at different stages and further optimize the system operation.

[0067] Electrolysis water device

[0068] The water electrolysis device is installed between channel 1 and channel 3, with the anode located on the side of channel 1 close to the anion exchange membrane, and the cathode located on the side of channel 3 close to the cation exchange membrane. This layout enables the electric field generated by the electrodes to effectively act on the ion exchange membrane area, promoting the movement of ions between the exchange membranes.

[0069] The anode and cathode are made of nickel-based alloy materials, which have good corrosion resistance and can remain stable in the highly corrosive environment of seawater electrolysis, reducing electrode damage and performance degradation caused by corrosion, ensuring long-term and reliable operation of the water electrolysis device, and continuously providing electric field assistance for the seawater desalination process.

[0070] Control system and sensor group

[0071] The control system is electrically connected to the water electrolysis device and the electric control valve, becoming the intelligent control core of the entire system. It can accurately control the current intensity of the water electrolysis device and the switching time of the electric control valve according to the preset parameters, realizing the automated and intelligent management of the seawater desalination process.

[0072] The sensor group equipped in the control system includes salinity sensor, temperature sensor and pressure sensor, which are installed in channel 1, channel 2 and channel 3 respectively. These sensors can monitor the state parameters of seawater in each channel in real time and feed the data back to the control system, so that the control system can adjust the operating parameters in time according to the actual situation, ensure that the system is always in the best operating state, and improve the desalination effect and system stability.

[0073] Improving desalination efficiency

[0074] The design of multi-channel and ion exchange membrane realizes the step-by-step treatment and ion selective separation of seawater desalination. Under the action of electric field and concentration difference, ions in seawater gradually pass through the exchange membrane into different channels. Compared with the traditional single dialysis membrane or simple treatment method, this structure makes ion separation more thorough, reduces the aggregation and blockage of ions on the membrane surface, and improves the speed and efficiency of seawater desalination.

[0075] The electric field generated by the water electrolysis device promotes the movement of ions, accelerates the ion exchange process, and further improves the overall efficiency of seawater desalination, enabling more seawater to be processed and more fresh water to be produced per unit time.

[0076] Reduce the burden on dialysis membrane

[0077] The desalination process is divided into two stages through anion exchange membrane and cation exchange membrane, avoiding all ions from impacting a single dialysis membrane at the same time. The ion exchange membrane in each stage only needs to process specific types of ions, which reduces the working intensity and burden of the membrane, reduces the risk of membrane damage, and extends the service life of the dialysis membrane, thereby reducing the maintenance cost and operating cost of the system.

[0078] Stable system operation

[0079] Corrosion-resistant pipes and nickel-based alloy electrodes ensure the durability of key system components in seawater environments, reduce equipment failures and maintenance times due to corrosion, and ensure long-term stable operation of the system.

[0080] The control system makes real-time adjustments to the water electrolysis device and the electronically controlled valve according to the parameters fed back by the sensors, so that the system can adapt to changes in seawater conditions (such as salinity, temperature, and pressure fluctuations), maintain a stable operating state and desalination effect, and avoid large fluctuations or failures in system performance due to changes in external factors.

[0081] Optimize operation control

[0082] The connection between the control system and each component realizes the automatic operation and intelligent management of the system. Through preset parameters and sensor data feedback, key operating parameters such as the flow rate of seawater and the current intensity of the water electrolysis device can be accurately controlled, so that the system can operate under the best working conditions, improve the energy utilization efficiency of the system, reduce unnecessary energy consumption and resource waste, and also improve the quality and output stability of fresh water.

[0083] like Figure 2 As shown, in some embodiments, the water electrolysis device includes an anode and a cathode, the anode is arranged on the side of the channel one close to the anion exchange membrane, and the cathode is arranged on the side of the channel three close to the cation exchange membrane, and the electric field generated by the electrode promotes the movement of ions between the exchange membranes; from the perspective of ion migration, the anode is arranged on the side of the channel one close to the anion exchange membrane, and when the power is turned on, the anode undergoes an oxidation reaction, so that the anions (such as chloride ions, etc.) in the channel one move toward the anode. Due to the proximity to the anion exchange membrane, these anions are more likely to enter the channel two through the anion exchange membrane under the action of the electric field. The cathode is arranged on the side of the channel three close to the cation exchange membrane, and the cathode undergoes a reduction reaction, attracting the cations (such as sodium ions, etc.) in the channel two to move to the cathode, and under the promotion of the electric field, the cations are more likely to pass through the cation exchange membrane and enter the channel three. In this way, through the electric field generated by the electrode, a directional ion migration path is formed between the channel one, the channel two and the channel three, which greatly promotes the movement of ions between the exchange membranes and accelerates the separation of ions in the seawater desalination process.

[0084] like Figure 3As shown, in some embodiments, the anode and cathode are made of nickel-based alloy materials to prevent corrosion during the electrolysis of seawater; in the seawater desalination auxiliary system, the anode and cathode face an extremely harsh corrosive environment during the electrolysis of seawater. Seawater is rich in salt, especially high concentrations of chloride ions, which are highly corrosive and can cause serious corrosion to most metal materials.

[0085] Nickel-based alloy materials were selected because they have a series of unique properties to cope with this harsh environment. First of all, nickel-based alloys have excellent corrosion resistance. The internal alloy element composition and microstructure enable them to form a stable passivation film in the seawater electrolysis environment containing high concentrations of chloride ions. This passivation film can effectively prevent corrosive ions such as chloride ions from further contacting the metal matrix, thereby greatly reducing the corrosion rate.

[0086] Secondly, nickel-based alloys usually have good high temperature and high pressure resistance and certain mechanical strength. During the electrolysis process, the electrodes may generate heat due to the passage of current, and the pressure of seawater may also cause certain mechanical stress on the electrodes. Nickel-based alloys can maintain their structural integrity and performance stability under such complex working conditions, and will not be easily damaged or deformed due to temperature, pressure changes or mechanical external forces, ensuring the long-term stable operation of the water electrolysis device, thereby ensuring the continuous and efficient operation of the entire seawater desalination auxiliary system, and effectively reducing the equipment maintenance costs and system failure risks caused by electrode corrosion.

[0087] like Figure 3 As shown, in some embodiments, the system further includes a control system, which is electrically connected to the water electrolysis device and the electric control valve, and is used to control the current intensity of the water electrolysis device and the switching time of the electric control valve according to preset parameters to optimize the seawater desalination process; during the seawater desalination process, the state parameters such as salinity, temperature and pressure of seawater are in dynamic change. The salinity sensor, temperature sensor and pressure sensor equipped with the control system monitor these state parameters of seawater in channel one, channel two and channel three in real time, and feed the data back to the control system.

[0088] When the salinity sensor detects that the salinity of seawater in a certain channel is too high, the control system can increase the current intensity of the water electrolysis device according to the preset program. Higher current intensity will enhance the electric field generated by the electrodes, prompting more ions to move between the exchange membranes, accelerate the desalination process of seawater, and reduce the salinity of seawater. Conversely, if the salinity is low, the current intensity can be appropriately reduced to save energy and avoid over-processing.

[0089] For the data fed back by the temperature sensor, if the seawater temperature is too low, it may affect the migration rate of ions and the efficiency of electrolysis reaction. At this time, the control system can adjust the switching time of the electric control valve to extend the residence time of seawater in the channel to ensure that ions have enough time to exchange and migrate, or adjust the working parameters of the electrolysis device to adapt to the low temperature environment and maintain the desalination effect of the system.

[0090] In terms of pressure, if the pressure sensor detects abnormal pressure, the control system can adjust the opening and closing degree of the electric control valve in time to ensure that seawater flows smoothly and stably in each channel, prevent damage to components such as ion exchange membranes due to excessively high or low pressure, and ensure the normal progress of the seawater desalination process.

[0091] By precisely controlling the current intensity of the water electrolysis device and the switching time of the electric control valve, the control system can flexibly adjust the system operating parameters according to the actual seawater conditions, so that the seawater desalination process is always in the best working state. While improving the desalination efficiency, it extends the service life of each system component, reduces energy consumption and maintenance costs, and realizes efficient, stable and economical operation of the entire seawater desalination auxiliary system.

[0092] like Figure 3 As shown, in some embodiments, the control system is equipped with a sensor group, including a salinity sensor, a temperature sensor and a pressure sensor, for real-time monitoring of the state parameters of seawater in each channel, and feeding back the data to the control system for precise adjustment; the salinity sensor is mainly used to monitor the salinity changes of seawater in each channel. In the process of seawater desalination, the salinity of seawater at different stages is a key indicator. For example, when seawater is just introduced into channel 1, the salinity is high. As the ion exchange and electrolysis process proceeds, the salinity in subsequent channels should gradually decrease. The salinity sensor feeds back the real-time detected data to the control system, and the control system determines whether the current desalination process is normal based on the preset salinity threshold and change curve. If the salinity of a channel decreases too slowly, it may mean that the ion exchange or electrolysis efficiency is insufficient, and the control system will take corresponding measures, such as increasing the current intensity of the electrolytic water device or adjusting the switching time of the electric control valve to speed up the desalination of seawater and ensure that the final output of fresh water meets the required salinity standard.

[0093] Temperature sensors are also indispensable for monitoring seawater temperature. Seawater temperature significantly affects the migration rate of ions and the rate of chemical reactions. At higher temperatures, the thermal motion of ions intensifies, and the speed of passing through the exchange membrane under the action of the electric field will be accelerated, and the electrolysis efficiency of the water electrolysis device may also increase. Conversely, low temperatures will slow down these processes. When the temperature sensor detects that the seawater temperature deviates from the appropriate range, the control system can adapt to the temperature change by adjusting the heating or cooling device (if the system is equipped), or adjusting the system operating parameters. For example, in a low temperature environment, the residence time of seawater in the channel can be appropriately extended or the working time of the water electrolysis device can be increased to ensure that the ion exchange and desalination effects are not greatly affected.

[0094] The pressure sensor is responsible for monitoring the pressure of seawater in each channel. Stable pressure is essential for the normal flow of seawater in pipes and channels. If the pressure is too high, it may damage the ion exchange membrane, pipes, electric control valves and other components, and even cause seawater leakage; if the pressure is too low, it may cause poor seawater flow, affecting ion exchange and desalination efficiency. Once the pressure sensor detects abnormal pressure, the control system will immediately adjust the opening of the electric control valve, adjust the inflow and discharge speed of seawater, and restore the pressure in each channel to the normal range, ensuring the safe and stable operation of the system and maintaining the continuity and effectiveness of the seawater desalination process.

[0095] In summary, salinity, temperature and pressure sensors work together to provide the control system with comprehensive and accurate seawater status information, enabling the control system to timely and accurately adjust system operating parameters according to actual conditions, optimize the seawater desalination process, improve system reliability and desalination efficiency, and ensure the efficient operation of the entire seawater desalination auxiliary system.

[0096] A method for using a seawater desalination auxiliary system for reducing the burden on a dialysis membrane comprises the following steps:

[0097] S1: Electrolytic cell preparation:

[0098] Design and manufacture the electrolytic cell, determine its size and shape, and ensure that it can accommodate channel one, channel two and channel three as well as the ion exchange membrane and the water electrolysis device;

[0099] The electrolytic cell is divided into channel one, channel two and channel three from left to right;

[0100] S2: Install ion exchange membrane:

[0101] Install the anion exchange membrane between channel one and channel two to ensure the sealing and stability of the membrane. It can be fixed with sealant or a fixed frame.

[0102] The cation exchange membrane is installed between channel two and channel three, and the sealing and stability are also ensured;

[0103] S3: Connecting pipes and electric control valves:

[0104] Select corrosion-resistant piping materials and connect Channels 1, 2 and 3 to the external seawater supply system and discharge system according to design requirements;

[0105] Install the electric control valve on the corresponding pipeline to ensure that the electric control valve can normally control the inflow and discharge of seawater;

[0106] S4: Install the water electrolysis device:

[0107] Select anode and cathode made of nickel-based alloy materials;

[0108] Install the anode on the side of channel 1 close to the anion exchange membrane and use a fixture to ensure its stable position;

[0109] Install the cathode on the side of channel three close to the cation exchange membrane and fix it in place;

[0110] Connect the water electrolysis device to the power supply to ensure a stable current supply;

[0111] S5: Set up the control system:

[0112] Select appropriate salinity sensor, temperature sensor and pressure sensor;

[0113] Install the sensors in channel one, channel two and channel three respectively to ensure accurate measurement of the state parameters of seawater;

[0114] Use cables and connectors to connect sensors to the control system;

[0115] Programming the control system so that it can automatically adjust the current intensity of the water electrolysis device and the switching time of the electric control valve according to the data fed back by the sensor;

[0116] S6: Debug and optimize the system:

[0117] Conduct simulation experiments to check the working conditions of various parts of the system, including the isolation effect of the ion exchange membrane, the performance of the water electrolysis device, and the response of the control system;

[0118] According to the results of the simulation experiment, the system is adjusted and optimized to ensure that it can operate stably and achieve efficient seawater desalination effect;

[0119] Conduct tests in the actual operating environment to further verify the performance and reliability of the system;

[0120] Electrolytic cell preparation: Providing the physical basis for the entire seawater desalination auxiliary system, ensuring that each component can be reasonably arranged, that there is appropriate space for seawater treatment, and that the subsequent desalination process proceeds in an orderly manner are prerequisites for the stable operation of the system.

[0121] Ion exchange membrane installation: By accurately installing anion and cation exchange membranes and ensuring their sealing and stability, the effective separation of anions and cations in seawater can be achieved, reducing the concentrated impact of ions on the dialysis membrane, thereby reducing the burden on the dialysis membrane and improving the seawater desalination efficiency and the service life of the membrane.

[0122] Connection of pipelines and electric control valves: The selection of corrosion-resistant pipeline materials and correct connection ensure the smooth transportation and discharge of seawater in the system. The effective installation of electric control valves can accurately control the flow of seawater, so that seawater flows between channels according to the predetermined process, maintain the dynamic balance of seawater in the system, and ensure the stability of the desalination process.

[0123] Installation of water electrolysis device: Using nickel-based alloy electrodes and correctly installing and connecting the power supply can generate a stable electric field when electrolyzing seawater, promote the movement of ions between exchange membranes, accelerate the desalination process, and at the same time use the corrosion resistance of nickel-based alloys to ensure long-term stable operation of the electrodes and reduce equipment maintenance costs.

[0124] Control system settings: Select appropriate sensors and install and program them properly to monitor seawater status parameters in real time and provide data support for the control system, so that the control system can accurately adjust the current intensity of the water electrolysis device and the switching time of the electric control valve according to the actual seawater conditions, optimize the seawater desalination process, improve the system's degree of automation and operating efficiency, ensure that the system adapts to different seawater conditions, and stably produce fresh water that meets the requirements.

[0125] In this seawater desalination auxiliary system, the metal ion precipitation produced after electrolysis has many benefits.

[0126] From the perspective of reducing equipment scaling, the formation of metal ion precipitation can effectively reduce the probability of metal ions in seawater adhering to the surfaces of pipes, ion exchange membranes and other key components. In the traditional seawater desalination process, long-term accumulation of metal ions is prone to scaling, which seriously affects the heat transfer efficiency and fluid transport performance of the equipment, and increases equipment maintenance costs and energy consumption. In this system, metal ion precipitation is precipitated in time, allowing seawater to flow more smoothly in the system, maintaining the efficient operation of the equipment, reducing the frequency of equipment cleaning and maintenance due to scaling, and ensuring the continuity of the seawater desalination process.

[0127] In terms of improving the quality of fresh water, the separation of metal ion precipitation further reduces the residual amount of metal ions in fresh water. Seawater usually contains a certain amount of heavy metal ions, such as mercury, cadmium, lead, etc. These ions are potentially harmful to the human body and the ecological environment. By promoting the precipitation of metal ions through electrolysis, the harmful metal ions are deeply removed while desalinating seawater, which significantly improves the purity and safety of fresh water, making it more in line with the high standards for drinking water and industrial water, expanding the application field of fresh water, and providing a strong guarantee for the sustainable use of water resources.

[0128] In terms of extending the life of the system, reducing the circulation and accumulation of metal ions in the system can reduce their corrosion and erosion effects on system components. The presence of metal ions may trigger electrochemical reactions and accelerate the corrosion process of components, especially the damage to sensitive components such as electrodes and ion exchange membranes. The metal ion precipitation produced by electrolysis removes these potential harmful factors in advance, effectively protects the key components of the system, maintains its structural integrity and performance stability, thereby extending the service life of the entire seawater desalination auxiliary system, reducing the cost of equipment replacement, and improving the long-term economic benefits of the system.

[0129] Debug and optimize the system: simulation experiments and actual tests can comprehensively check the performance of each part of the system, discover problems in time and make adjustments and optimizations to ensure the stable operation of the system in various environments, achieve efficient seawater desalination, ensure system reliability and sustainability of desalination effects, and improve the overall performance and practicality of the system.

[0130] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A seawater desalination auxiliary system for reducing the burden on a dialysis membrane, comprising an electrolytic cell, characterized in that: The electrolytic cell is provided with channel one, channel two and channel three from left to right, channel one and channel two are separated by an anion exchange membrane, channel two and channel three are separated by a cation exchange membrane, channel one, channel two and channel three are connected to and discharged from seawater through pipelines and electric control valves, and a water electrolysis device is installed between channel one and channel three.

2. A seawater desalination auxiliary system for reducing the burden on dialysis membrane according to claim 1, characterized in that: The water electrolysis device includes an anode and a cathode. The anode is arranged on the side of the channel one close to the anion exchange membrane, and the cathode is arranged on the side of the channel three close to the cation exchange membrane. The electric field generated by the electrodes promotes the movement of ions between the exchange membranes.

3. A seawater desalination auxiliary system for reducing the burden on dialysis membrane according to claim 2, characterized in that: The anode and cathode are made of nickel-based alloy material to prevent corrosion during the electrolysis of seawater.

4. The seawater desalination auxiliary system for reducing the burden on dialysis membrane according to claim 1, characterized in that: The system also includes a control system, which is electrically connected to the water electrolysis device and the electric control valve and is used to control the current intensity of the water electrolysis device and the switching time of the electric control valve according to preset parameters to optimize the seawater desalination process.

5. A seawater desalination auxiliary system for reducing the burden on dialysis membrane according to claim 4, characterized in that: The control system is equipped with a sensor group, including a salinity sensor, a temperature sensor and a pressure sensor, which are used to monitor the state parameters of seawater in each channel in real time and feed the data back to the control system for precise adjustment.

6. A method for using a seawater desalination auxiliary system for reducing the burden on a dialysis membrane, characterized in that: The following steps are involved: S1: Electrolytic cell preparation: Design and manufacture the electrolytic cell, determine its size and shape, and ensure that it can accommodate channel one, channel two and channel three as well as the ion exchange membrane and the water electrolysis device; The electrolytic cell is divided into channel one, channel two and channel three from left to right; S2: Install ion exchange membrane: Install the anion exchange membrane between channel one and channel two to ensure the sealing and stability of the membrane. It can be fixed with sealant or a fixed frame. The cation exchange membrane is installed between channel two and channel three, and the sealing and stability are also ensured; S3: Connecting pipes and electric control valves: Select corrosion-resistant piping materials and connect Channels 1, 2 and 3 to the external seawater supply system and discharge system according to design requirements; Install the electric control valve on the corresponding pipeline to ensure that the electric control valve can normally control the inflow and discharge of seawater; S4: Install the water electrolysis device: Select anode and cathode made of nickel-based alloy materials; Install the anode on the side of channel 1 close to the anion exchange membrane and use a fixture to ensure its stable position; Install the cathode on the side of channel three close to the cation exchange membrane and fix it in place; Connect the water electrolysis device to the power supply to ensure a stable current supply; S5: Set up the control system: Select appropriate salinity sensor, temperature sensor and pressure sensor; Install the sensors in channel one, channel two and channel three respectively to ensure accurate measurement of the state parameters of seawater; Use cables and connectors to connect sensors to the control system; Programming the control system so that it can automatically adjust the current intensity of the water electrolysis device and the switching time of the electric control valve according to the data fed back by the sensor; S6: Debug and optimize the system: Conduct simulation experiments to check the working conditions of various parts of the system, including the isolation effect of the ion exchange membrane, the performance of the water electrolysis device, and the response of the control system; According to the results of the simulation experiment, the system is adjusted and optimized to ensure that it can operate stably and achieve efficient seawater desalination effect; Conduct tests in the actual operating environment to further verify the performance and reliability of the system; Applicable to a seawater desalination auxiliary system for reducing the burden on dialysis membranes as described in claims 1-5.

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