Sewage desalting treatment equipment for waste incineration power plant and treatment method of sewage desalting treatment equipment

Abstract

The invention relates to the technical field of sewage treatment and recycling, in particular to sewage desalting treatment equipment for a waste incineration power plant and a treatment method thereof.The sewage desalting treatment equipment comprises a treatment box and further comprises a movable seat, a sewage treatment device, a sewage treatment device and a sewage treatment device, and the movable seat is movably arranged in the middle of the treatment box and can move up and down; the filter plate is matched with the through hole, and a first overturning assembly for overturning the filter plate is arranged on the moving seat; and the scraping plates are arranged on the side wall of the movable seat and correspond to the strip-shaped gaps one to one. According to the invention, through cooperation of the moving seat, the filter plate and the scraper plate, when the surface of the cathode plate is cleaned, a complete dirt scraping isolation surface can be formed, so that scraped dirt can be gathered downwards to facilitate dirt discharge, and meanwhile, secondary adsorption of suspended pollutants is effectively inhibited; therefore, the scale on the surface of the electrode can be synchronously cleaned without shutdown, and the defect that shutdown cleaning is needed in a traditional electrochemical method is effectively overcome.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment and reuse technology, specifically to a wastewater desalination treatment device and method for wastewater incineration power plants. Background Technology

[0002] With the acceleration of urbanization and the continuous increase in the amount of municipal solid waste, waste-to-energy incineration has been widely used as an efficient waste treatment method. However, the incineration process generates a large amount of wastewater, especially leachate, which has a complex composition and contains high concentrations of pollutants such as salt, organic matter, and heavy metals. If not properly treated, it will cause serious harm to the environment.

[0003] Currently, electrochemical methods are mainly used for wastewater desalination: utilizing electrochemical principles, salts and pollutants are removed from wastewater through electrolytic reactions. However, scale easily forms on the electrode surface, affecting the electrode's reaction efficiency and lifespan. A search revealed patent CN105060416B, which discloses a rectangular multi-chamber electrochemical water treatment device for desalination and hydrochloric acid preparation. This device solves the problem of scale formation on the electrode surface by using a scraper plate that moves up and down to remove scale from the cathode plate.

[0004] However, the aforementioned technical solutions require shutting down the machine and interrupting the electric field before cleaning the electrode surface, and then emptying the wastewater from the equipment before starting the scraper cleaning. This is because if cleaning is performed directly under the continuous action of the electric field, the scraped-off scale particles such as calcium hydroxide and magnesium carbonate will remain suspended in the water. Under the influence of the electric field force and water flow turbulence, they are easily re-adhered to the cathode plate, forming secondary adsorption. Simultaneously, the unemptied wastewater will hinder the movement of the scraped-off scale to the drain outlet at the bottom of the equipment, preventing the cleaned impurities from being discharged smoothly. These impurities are likely to flow with the water from the equipment's outlet into subsequent equipment, affecting subsequent treatment. Therefore, if the traditional cleaning method is used, the electrode surface needs to be cleaned every 4-6 hours, significantly reducing the equipment's continuous operating capacity and making it difficult to meet the treatment requirements of wastewater from waste incineration power plants, which has large fluctuations in water quality and high salinity. To address these shortcomings, we propose a wastewater desalination treatment equipment and method for waste incineration power plants. Summary of the Invention

[0005] The purpose of this invention is to provide a wastewater desalination treatment device and method for waste incineration power plants, which solves the problem in the above-mentioned background technology that requires shutdown for cleaning, resulting in the inability of the equipment to operate continuously.

[0006] This invention is achieved through the following technical solution: a wastewater desalination treatment device for a waste incineration power plant, comprising a treatment tank, and further comprising: Several cathode plates are evenly distributed on the inner walls of the left and right sides of the processing box; Several anode assemblies are fixed to the inner top of the processing box. Each anode assembly is inserted between two adjacent cathode plates, and a strip gap is left between each anode assembly and the adjacent cathode plates. A movable seat is movably disposed in the middle of the processing box and can move up and down. A through-hole is provided on the movable seat, and a connecting shaft is rotatably connected inside the through-hole. A filter plate, which is fixed on a connecting shaft and adapted to a port, and a first flipping component connected to the connecting shaft is provided on a movable seat; Two positioning shafts are rotatably connected to the left and right sides of the movable base, respectively. Each positioning shaft is fixed with a scraper that matches the corresponding strip gap. The movable base is provided with a second flipping assembly that is connected to each positioning shaft. When the moving seat moves downward, the filter plate and each scraper are in a horizontal state to form a complete dirt-scraping isolation surface; when the moving seat moves upward, the filter plate and each scraper are in a vertical state.

[0007] Optionally, the processing box includes a lower box with an open top, and an upper box with an open bottom is detachably connected to the upper end of the lower box. The lower opening of the upper box is larger than the upper opening of the lower box. Each cathode plate is fixed to the inner wall of the lower housing, and each anode assembly is fixed to the inner top of the upper housing.

[0008] Optionally, the anode assembly includes two partitions fixed to the top of the processing chamber and parallel to each other, one partition being in contact with the inner wall of the processing chamber and the other partition being in contact with the side wall of the movable seat. Two parallel and spaced-apart ion membranes are fixed between two partitions. A sealing plate is fixed at the lower end of each ion membrane and each partition. The sealing plate, each partition, and each ion membrane together form a chamber. An anode plate inserted into the chamber is fixed at the top of the inner side of the treatment chamber.

[0009] Optionally, a linear module is installed on the top of the processing box, and the actuator of the linear module is connected to the moving base to drive the moving base to move up and down.

[0010] Optionally, the first flipping assembly includes torsion springs sleeved on the connecting shaft and located on the front and rear sides of the filter plate, one torsion arm of each torsion spring being connected to the filter plate, and the other torsion arm of each torsion spring being connected to the movable seat; when not subjected to external force from the system, the torsion springs keep the filter plate in a horizontal state. Vertical grooves corresponding to the connecting shaft are provided on the inner walls of the front and rear sides of the processing box. Gears are rotatably connected to both ends of the connecting shaft through one-way bearings. A rack that cooperates with the gear is fixed at the lower end near the end of each vertical groove. When the moving seat moves downwards until the gear meshes with the rack, the gear rotates relative to the connecting shaft; when the moving seat moves upwards until the gear meshes with the rack, the one-way bearing locks, so that the gear and the connecting shaft rotate synchronously.

[0011] Optionally, the first flipping assembly also includes guide rails fixed to the left and right sides of each vertical groove, with guide blocks integrally formed at both the upper and lower ends of each guide rail; and guide grooves adapted to each guide rail are provided on the connecting shaft.

[0012] Optionally, the structure of the second flipping component is the same as that of the first flipping component.

[0013] Optionally, a bushing is fixed in the middle of the scraper, and the bushing is fixedly sleeved on the corresponding positioning shaft; When the scraper is in a horizontal position, one half of the scraper extends into the strip gap, and the other half of the scraper is in contact with the bottom of the moving seat. When the scraper is in a vertical position, it is located at the outer end of the strip gap to shield the upper and lower areas of the strip gap near the bushing.

[0014] The present invention also provides a treatment method applicable to the above-mentioned wastewater desalination treatment equipment, comprising the following steps: Step 1: Wastewater enters the treatment tank in preparation for electrolytic desalination; Step 2: Each cathode plate and each anode assembly is energized. Under the action of the electric field, salt ions in the wastewater migrate in a directional manner and are adsorbed on the surface of the cathode plate, thereby achieving desalination and purification. Step 3: When the scale on the cathode plate surface needs to be cleaned, the moving seat moves downwards, and at the same time the filter plate and each scraper flips to a horizontal state to form a complete dirt-scraping isolation surface, so that the scale layer on the cathode plate surface can be scraped off downwards and the scraped dirt can be collected downwards and discharged from the bottom of the treatment box. Step 4: After the dirt has been drained, the moving seat moves upward to reset, and at the same time the filter plate and each scraper flips to a vertical position to reduce the resistance when moving upward and to avoid secondary scraping.

[0015] Compared with the prior art, the present invention provides a wastewater desalination treatment device and method for waste incineration power plants, which has the following beneficial effects: 1. This invention, through the cooperation of a movable base, filter plate, and scraper, forms a complete dirt-scraping isolation surface when cleaning the cathode plate surface. This allows the scraped-off dirt to gather downwards, facilitating its discharge, while effectively inhibiting the secondary adsorption of suspended pollutants. Therefore, electrode surface scaling can be cleaned simultaneously without shutting down the system, effectively solving the drawback of traditional electrochemical methods that require shutdown for cleaning. This significantly improves the continuous operation capability of the equipment, making it particularly suitable for the efficient treatment of wastewater with large fluctuations in water quality and high salinity from waste incineration power plants.

[0016] 2. The filter plate and scraper in this invention can be flipped into a vertical state as the moving seat moves upward, thereby reducing the resistance to water flow; and preventing secondary scraping of the electrode plate, preventing adsorbed salt ions from re-entering the water and depositing on the upper surface of the filter plate to form a blockage.

[0017] 3. As the scraper of the present invention moves upward with the moving seat, it can be located at the outer port of the strip gap and block the upper and lower areas of the strip gap near the bushing, effectively blocking the scouring effect of disturbed water on the electrode surface and preventing the adsorbed salt ions from re-entering the water. Attached Figure Description

[0018] Figure 1 This is an assembly drawing of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the lower housing of the present invention; Figure 4 This is a schematic diagram of the upper housing of the present invention; Figure 5 This is a schematic diagram of the filter plate of the present invention in a horizontal state; Figure 6 This is a schematic diagram of the filter plate of the present invention in a vertical position; Figure 7 This is a schematic diagram of the strip-shaped gap of the present invention; Figure 8 This is a schematic diagram of the gap fit between the scraper and the strip of the present invention; Figure 9 This is a cross-sectional view of the anode assembly of the present invention; Figure 10 Figure 2 Enlarged view of point A in the middle; Figure 11 for Figure 3 Enlarged view of point B in the middle; Figure 12 for Figure 5 Enlarged view of point C in the middle; Figure 13 for Figure 5 Enlarged view of point D in the middle.

[0019] In the diagram: 1. Processing box; 101. Lower box; 102. Upper box; 2. Cathode plate; 3. Anode assembly; 301. Partition plate; 302. Ion membrane; 303. Anode plate; 4. Strip gap; 5. Moving seat; 6. Through port; 7. Filter plate; 8. First flipping assembly; 801. Gear; 802. Rack; 803. Guide rail; 804. Guide groove; 9. Scraper; 10. Vertical groove; 11. Second flipping assembly; 12. Connecting shaft; 13. Positioning shaft; 14. Bushing. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1 to 13 A wastewater desalination treatment device and method for waste incineration power plants, comprising a treatment tank 1 for desalinating wastewater.

[0022] This embodiment also includes: several cathode plates 2, several anode assemblies 3, a movable seat 5, a filter plate 7, and two positioning shafts 13.

[0023] Specifically, several cathode plates 2 are evenly distributed on the inner walls of the left and right sides of the treatment tank 1. Several anode components 3 are fixed to the inner top of the treatment tank 1, with each anode component 3 inserted between two adjacent cathode plates 2, leaving a strip-shaped gap 4 between each anode component 3 and the adjacent cathode plates 2. It should be noted that, for ease of subsequent cleaning, the inner side of the anode component 3 is flush with the inner wall of the treatment tank 1, and the outer side of the anode component 3 is flush with the cathode plate 2. When each cathode plate 2 and each anode component 3 is energized, under the action of the electric field, the salt ions contained in the wastewater in the strip-shaped gap 4 migrate directionally and are adsorbed onto the surface of the cathode plate 2 closest to the anode component 3, thus achieving desalination and purification.

[0024] In this embodiment, the anode assembly 3 includes two parallel partitions 301 fixed to the top of the treatment chamber 1. One partition 301 is attached to the inner wall of the treatment chamber 1, and the other partition 301 is attached to the side wall of the movable seat 5. Two parallel and spaced-apart ion exchange membranes 302 are fixed between the two partitions 301. A sealing plate is fixed at the lower end of each ion exchange membrane 302 and each partition 301. The sealing plate, each partition 301, and each ion exchange membrane 302 cooperate to form a chamber. An anode plate 303 inserted into the chamber is fixed to the top of the treatment chamber 1. Inside the treatment chamber 1, sodium ions, calcium ions, magnesium ions, etc., in an ionic state can permeate through the ion exchange membranes 302 to the cathode plate 2 and precipitate on the cathode plate 2, achieving a more thorough removal of cations.

[0025] In addition, the movable seat 5 is movably disposed in the middle of the processing box 1 and can move up and down. The front and rear sides of the movable seat 5 are respectively attached to the front and rear inner walls of the processing box 1, and the left and right sides of the movable seat 5 are respectively attached to the side walls of the corresponding cathode plate 2 and anode assembly 3. When the movable seat 5 moves downward, it can better scrape off the dirt. In this embodiment, a linear module (not shown in the figure) is installed on the top of the processing box 1. The actuator of the linear module is connected to the movable seat 5 and is used to drive the movable seat 5 to move up and down.

[0026] A through-hole 6 is formed in the movable seat 5, and a connecting shaft 12 is rotatably connected within the through-hole 6. The filter plate 7 is fixed to the connecting shaft 12 and adapted to the through-hole 6, capable of closing or opening the through-hole 6. A first flipping assembly 8 connected to the connecting shaft 12 is provided on the movable seat 5 for rotating the filter plate 7 along the connecting shaft 12. When the movable seat 5 moves downward, the filter plate 7 is in a horizontal state, thus closing the through-hole 6; when the movable seat 5 moves upward, the filter plate 7 is in a vertical state, thus opening the through-hole 6.

[0027] Two positioning shafts 13 are rotatably connected to the left and right sides of the movable base 5, respectively. A scraper 9, adapted to the corresponding strip gap 4, is fixed on each positioning shaft 13. When the scraper 9 is in a horizontal state, it can extend into the corresponding strip gap 4 and fit against the sidewalls of the corresponding cathode plate 2 and anode assembly 3, thereby cleaning the surface of the electrode plate. A second flipping assembly 11, connected to each positioning shaft 13, is provided on the movable base 5 to rotate the scraper 9 along the corresponding positioning shaft 13.

[0028] With the above design, when the movable seat 5 moves downward, the filter plate 7 and each scraper 9 are in a horizontal state to form a complete dirt-scraping isolation surface. This allows the scraped dirt to gather downward, facilitating its discharge. At the same time, it effectively inhibits the secondary adsorption of suspended pollutants, enabling cleaning without stopping the machine and significantly improving the continuous operation capability of the equipment. It is particularly suitable for the efficient treatment of wastewater with large fluctuations in water quality and high salinity in waste incineration power plants.

[0029] When the movable seat 5 moves upward, the filter plate 7 and each scraper 9 are in a vertical state, which reduces the resistance of water flow; and avoids secondary scraping of the electrode plates, preventing the adsorbed salt ions from re-entering the water and depositing on the upper surface of the filter plate to form a blockage.

[0030] It should be noted that the treatment box 1 includes a lower box 101 with an open top, and an upper box 102 with an open bottom is detachably connected to the upper end of the lower box 101. Wastewater is concentrated in the lower box 101 for desalination treatment. When cleaning of the electrode plates is not required, components such as the movable seat 5 and filter plates 7 can be stored in the upper box 102. The lower opening of the upper box 102 is larger than the upper opening of the lower box 101, facilitating the movement and rotation of other components. Each cathode plate 2 is fixed to the inner wall of the lower box 101, and each anode assembly 3 is fixed to the inner top of the upper box 102. A drain port is provided at the bottom of the lower box 101 for discharging dirt; an inlet pipe and a drain pipe are respectively connected to both sides of the lower box 101 for allowing wastewater to enter the lower box 101 and for discharging desalinated wastewater. An exhaust pipe is connected to the top of the upper box 102 for discharging exhaust gas generated during the desalination process.

[0031] The first flipping component 8 is described below: The first flipping assembly 8 includes torsion springs (not shown in the figure) sleeved on the connecting shaft 12 and located on the front and rear sides of the filter plate 7. One torsion arm of each torsion spring is connected to the filter plate 7, and the other torsion arm of each torsion spring is connected to the movable seat 5. When not subjected to external force from the system, the torsion springs keep the filter plate 7 in a horizontal state. Vertical grooves 10, corresponding to the connecting shaft 12, are formed on the inner walls of the front and rear sides of the processing box 1. It should be noted that the vertical grooves 10 are formed on the inner wall of the lower box 101, and the upper end of the vertical grooves 10 is open, allowing the end of the connecting shaft 12 to move out of the vertical groove 10 along the open end. Gears 801 are rotatably connected to both ends of the connecting shaft 12 via one-way bearings, and racks 802 that mesh with the gears 801 are fixed near the lower end of each vertical groove 10.

[0032] When the movable seat 5 moves downward until the gear 801 meshes with the rack 802, the gear 801 rotates relative to the connecting shaft 12; when the movable seat 5 moves upward until the gear 801 meshes with the rack 802, the one-way bearing locks so that the gear 801 and the connecting shaft 12 rotate synchronously, thereby enabling the filter plate 7, which is in a horizontal state, to flip to a vertical state.

[0033] The first flipping assembly 8 also includes guide rails 803 fixed to the left and right sides of each vertical groove 10. Each guide rail 803 has guide blocks integrally formed at both its upper and lower ends. Guide grooves 804 adapted to each guide rail 803 are provided on the connecting shaft 12. The guide blocks at the upper and lower ends of the guide rails 803 are easy to insert into the guide grooves 804.

[0034] With the above design, in the initial state, the movable seat 5 is stationary inside the upper box 102, and the connecting shaft 12 is suspended outside the vertical groove 10; at the same time, the torsion spring releases the preload, driving the filter plate 7 to remain horizontal and completely sealing the opening 6.

[0035] When the electrode plate needs to be cleaned, when the moving seat 5 moves down to the set position, the connecting shaft 12 enters the vertical groove 10, and at the same time the guide groove 804 is stuck on the guide rail 803 along the guide inclined block, restricting the circumferential degree of freedom of the connecting shaft 12, so that the filter plate 7 keeps in a horizontal position; during its downward movement, the scraper 9 is used to scrape off the attached layer on the cathode plate 2, and since the filter plate 7 is in a horizontal state, the scraped dirt can only gather downward.

[0036] After the connecting shaft 12 descends a certain distance, the gear 801 and rack 802 begin to mesh, and the one-way bearing is in a free-rotating state, allowing the gear 801 to rotate relative to the connecting shaft 12. At this time, the guide groove 804 disengages from the guide rail 803 and no longer restricts the circumferential degree of freedom of the connecting shaft 12. When the movable seat 5 moves down to its lowest limit, it is first kept still for a period of time, and then the valve at the drain outlet is opened to allow the dirt to flow out slowly. When it is observed that there is no dirt in the water flowing out of the drain outlet, the valve at the drain outlet is closed, and finally the movable seat 5 is controlled to rise.

[0037] When the movable seat 5 moves upward, the rack 802 drives the gear 801 to rotate. At this time, the one-way bearing is locked, thereby driving the connecting shaft 12 to rotate synchronously.

[0038] When the connecting shaft 12 rotates 90° to make the filter plate 7 vertical, the guide rail 803 is inserted into the guide groove 804 again to form a mechanical self-locking mechanism, so that the filter plate 7 remains vertical and moves upward, and the opening 6 is opened to reduce resistance; at the same time, it makes it less likely for dirt in the water to accumulate on the upper surface of the filter plate 7 and cause the filter plate 7 to become clogged.

[0039] When the connecting shaft 12 moves upward and disengages from the vertical groove 10, the guide groove 804 separates from the guide rail 803, and the torsion spring drives the filter plate 7 to automatically flip to the horizontal storage position, restoring the system to its initial adsorption state. This design achieves automatic switching of the filter plate 7's posture through a purely mechanical structure, requiring no additional power source, and is particularly suitable for continuous treatment scenarios of high-salinity wastewater from waste incineration power plants.

[0040] It should be noted that the structure of the second flipping component 11 is the same as that of the first flipping component 8, and the scraper 9 rotates along the positioning shaft 13 in the same way. That is, when the moving seat 5 moves downward, the scraper 9 is in a horizontal state, which can clean the surface of the electrode plate. When the moving seat 5 moves upward, the scraper 9 can automatically flip to a vertical state, which not only reduces resistance, but also avoids secondary scraping of the electrode plate and prevents the adsorbed salt ions from re-entering the water.

[0041] In some embodiments of this application, a bushing 14 is fixed in the middle of the scraper 9, and the bushing 14 is fixedly sleeved on the corresponding positioning shaft 13. When the scraper 9 is in a horizontal position, one half of the scraper 9 extends into the strip gap 4 and is in contact with the sidewalls of the cathode plate 2 and the anode assembly 3, thus cleaning the surface of the electrode plate. The other half of the scraper 9 is in contact with the bottom of the movable seat 5.

[0042] When the scraper 9 is in a vertical position, it not only reduces resistance but also prevents secondary scraping of the electrode plates, thus preventing adsorbed salt ions from re-entering the water. At this time, the scraper 9 is located at the outer end of the strip gap 4, shielding the upper and lower areas of the strip gap 4 near the bushing 14. This effectively blocks the scouring effect of disturbed water on the electrode surface, further preventing adsorbed salt ions from re-entering the water. This design not only significantly reduces the treatment efficiency degradation caused by secondary adsorption but also reduces the risk of secondary pollution caused by heavy metals and other pollutants flowing out with the water. Example 2: This example proposes a treatment method applicable to the wastewater desalination equipment in Example 1, comprising the following steps: Step 1: Wastewater enters treatment tank 1 in preparation for electrolytic desalination; Step 2: Each cathode plate 2 and each anode assembly 3 are energized. Under the action of the electric field, salt ions in the wastewater migrate in a directional manner and are adsorbed on the surface of the cathode plate 2, thereby achieving desalination and purification. Step 3: When the scale on the surface of the cathode plate 2 needs to be cleaned, the linear module drives the moving seat 5 to move downward; at the same time, the filter plate 7 and each scraper 9 are flipped to a horizontal state to form a complete dirt-scraping isolation surface, so that the scale layer on the surface of the cathode plate 2 can be scraped off downward and the scraped dirt can be gathered downward and discharged from the bottom of the treatment box 1. Step 4: After the dirt is drained, the movable seat 5 moves upward to reset, and at the same time the filter plate 7 and each scraper 9 flip to a vertical position to reduce the resistance when moving upward and avoid secondary scraping of the electrode plates. This makes it difficult for the adsorbed salt ions to re-enter the water body, greatly reducing the treatment efficiency reduction caused by secondary adsorption, and also reducing the risk of secondary pollution caused by heavy metals and other pollutants flowing out with the water body.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wastewater desalination treatment device for a waste-to-energy incineration plant, comprising a treatment tank, characterized in that, Also includes: Several cathode plates are evenly distributed on the inner walls of the left and right sides of the processing box; Several anode assemblies are fixed to the inner top of the processing box. Each anode assembly is inserted between two adjacent cathode plates, and a strip gap is left between each anode assembly and the adjacent cathode plates. A movable seat is movably disposed in the middle of the processing box and can move up and down. A through-hole is provided on the movable seat, and a connecting shaft is rotatably connected inside the through-hole. A filter plate, which is fixed on a connecting shaft and adapted to a port, and a first flipping component connected to the connecting shaft is provided on a movable seat; Two positioning shafts are rotatably connected to the left and right sides of the movable base, respectively. Each positioning shaft is fixed with a scraper that matches the corresponding strip gap. The movable base is provided with a second flipping assembly that is connected to each positioning shaft. When the moving seat moves downward, the filter plate and each scraper are in a horizontal state to form a complete dirt-scraping isolation surface; when the moving seat moves upward, the filter plate and each scraper are in a vertical state.

2. The wastewater desalination treatment equipment for waste incineration power plants according to claim 1, characterized in that: The processing box includes a lower box body with an open top, and an upper box body with an open bottom is detachably connected to the upper end of the lower box body. The lower opening of the upper box body is larger than the upper opening of the lower box body. Each cathode plate is fixed to the inner wall of the lower housing, and each anode assembly is fixed to the inner top of the upper housing.

3. The wastewater desalination equipment for waste incineration power plants according to claim 1, characterized in that: The anode assembly includes two partitions fixed to the top of the processing chamber and parallel to each other, one partition being in contact with the inner wall of the processing chamber and the other partition being in contact with the side wall of the movable seat. Two parallel and spaced-apart ion membranes are fixed between two partitions. A sealing plate is fixed at the lower end of each ion membrane and each partition. The sealing plate, each partition, and each ion membrane together form a chamber. An anode plate inserted into the chamber is fixed at the top of the inner side of the treatment chamber.

4. The wastewater desalination equipment for waste incineration power plants according to claim 1, characterized in that: A linear module is installed on the top of the processing box. The actuator of the linear module is connected to the moving base and is used to drive the moving base to move up and down.

5. The wastewater desalination equipment for waste incineration power plants according to claim 1, characterized in that: The first flipping assembly includes torsion springs sleeved on the connecting shaft and located on the front and rear sides of the filter plate. One torsion arm of each torsion spring is connected to the filter plate, and the other torsion arm of each torsion spring is connected to the movable seat. When not subjected to external force from the system, the torsion springs keep the filter plate in a horizontal state.

6. The wastewater desalination equipment for waste incineration power plants according to claim 5, characterized in that: The processing box has vertical grooves on the inner walls of the front and rear sides corresponding to the connecting shaft. Gears are rotatably connected to both ends of the connecting shaft through one-way bearings. A rack that cooperates with the gear is fixed at the lower end near the end of each vertical groove. When the moving seat moves downwards until the gear meshes with the rack, the gear rotates relative to the connecting shaft; when the moving seat moves upwards until the gear meshes with the rack, the one-way bearing locks, so that the gear and the connecting shaft rotate synchronously.

7. The wastewater desalination equipment for waste incineration power plants according to claim 6, characterized in that: The first flipping assembly also includes guide rails fixed to the left and right sides of each vertical groove, and guide blocks are integrally formed at both the upper and lower ends of each guide rail; guide grooves that are adapted to each guide rail are provided on the connecting shaft.

8. The wastewater desalination equipment for waste incineration power plants according to claim 7, characterized in that: The structure of the second flipping component is the same as that of the first flipping component.

9. The wastewater desalination equipment for waste incineration power plants according to claim 1, characterized in that: A bushing is fixed in the middle of the scraper, and the bushing is fixedly sleeved on the corresponding positioning shaft; When the scraper is in a horizontal position, one half of the scraper extends into the strip gap, and the other half of the scraper is in contact with the bottom of the moving seat. When the scraper is in a vertical position, it is located at the outer end of the strip gap to shield the upper and lower areas of the strip gap near the bushing.

10. A treatment method applicable to the wastewater desalination treatment equipment according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Wastewater enters the treatment tank in preparation for electrolytic desalination; Step 2: Each cathode plate and each anode assembly is energized. Under the action of the electric field, salt ions in the wastewater migrate in a directional manner and are adsorbed on the surface of the cathode plate, thereby achieving desalination and purification. Step 3: When the scale on the cathode plate surface needs to be cleaned, the moving seat moves downwards, and at the same time the filter plate and each scraper flips to a horizontal state to form a complete dirt-scraping isolation surface, so that the scale layer on the cathode plate surface can be scraped off downwards and the scraped dirt can be collected downwards and discharged from the bottom of the treatment box. Step 4: After the dirt has been drained, the moving seat moves upward to reset, and at the same time the filter plate and each scraper flips to a vertical position to reduce the resistance when moving upward and to avoid secondary scraping.

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