A ceramic membrane concentration system for treating water plant sludge water

Abstract

The application discloses a kind of ceramic membrane concentration systems for treating water plant sludge water in the technical field of water plant sludge water treatment, including membrane pool;Ceramic membrane assembly, multiple ceramic membrane assemblies are arranged in parallel in membrane pool;Water inlet tank, the bottom of water inlet tank is communicated with the top of membrane pool by water inlet pipe;Water outlet tank, the top of water outlet tank is communicated with the top of ceramic membrane assembly by drain pipe, and the bottom of water outlet tank is communicated with the top of ceramic membrane assembly by backwashing pipe;Mud scraping assembly, mud scraping assembly is arranged in one side of ceramic membrane assembly, and mud scraping assembly can reciprocatingly move and carry out mud scraping operation to ceramic membrane assembly.The application reduces the membrane pollution rate by modifying ceramic membrane, improves the membrane flux, improves the recovery rate of sludge water, solves the problems of low recovery rate, poor water quality and difficult concentration of conventional treatment process.

Description

Technical Field

[0001] This invention relates to the field of sludge treatment technology in water treatment plants, and specifically to a ceramic membrane concentration system for treating sludge from water treatment plants. Background Technology

[0002] The wastewater generated by water plants mainly refers to the sludge discharge water from flocculation tanks and sedimentation tanks, as well as the backwash water from filter tanks. In the water purification process of water plants, organic and inorganic impurities such as silt, humus, algae, bacteria, and colloidal particles contained in the raw water form flocculated particles after the addition of coagulants. These flocculated particles are trapped in flocculation tanks, sedimentation tanks, and filter tanks. Therefore, while producing drinking water, water plants also produce a large amount of production wastewater, namely sludge discharge water and backwash water. If this wastewater is discharged directly into rivers, lakes, and other water bodies without treatment, it will not only cause serious environmental pollution but also silt up and raise the riverbed, representing a huge waste of resources.

[0003] Currently, the sludge treatment and reuse process in water treatment plants mainly follows the "regulation-concentration-conditioning-dehydration" process. All or part of the supernatant is discharged or recycled as raw water. To a large extent, the design and application of sewage treatment and sludge treatment methods from wastewater treatment plants are adopted without taking into account the characteristics of the sludge. Therefore, the existing sludge treatment and reuse process in water treatment plants has problems such as low concentration efficiency, low hydraulic load, low solids flux, and large footprint, which ultimately leads to a low sludge reuse rate.

[0004] Therefore, how to improve the sludge water reuse rate has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a ceramic membrane concentration system for treating sludge discharge from water plants, so as to solve the technical problem of low sludge discharge reuse rate in existing systems.

[0006] The technical solution adopted in this invention is: a ceramic membrane concentration system for treating sludge discharge from water plants, comprising:

[0007] Membrane pool;

[0008] Ceramic membrane modules, wherein multiple ceramic membrane modules are arranged side by side in a membrane tank;

[0009] The water inlet tank is connected to the top of the membrane tank via an inlet pipe at its bottom.

[0010] The water outlet tank has its top connected to the top of the ceramic membrane module via a drain pipe, and its bottom connected to the top of the ceramic membrane module via a backwash pipe.

[0011] A sludge scraping assembly is disposed on one side of the ceramic membrane assembly, and the sludge scraping assembly is capable of reciprocating and performing sludge scraping operations on the ceramic membrane assembly.

[0012] Preferably, the ceramic membrane assembly includes a membrane support frame, a flat ceramic membrane a, and a flat ceramic membrane b. The flat ceramic membrane a is fixedly installed on one side of the membrane support frame, and the flat ceramic membrane b is fixedly installed on the other side of the membrane support frame. The flat ceramic membrane a is loaded with polytetrafluoroethylene, and the flat ceramic membrane b is loaded with ferrite.

[0013] Preferably, the flat ceramic membranes b of two adjacent ceramic membrane modules are arranged opposite each other, and an aeration branch pipe is provided at the bottom of the membrane tank. The number of aeration branch pipes provided on one side of the flat ceramic membrane a is greater than the number of aeration branch pipes provided on the side of the flat ceramic membrane b.

[0014] Preferably, the sludge scraping assembly includes guide rails, a slider, and a plastic wiping plate. The two guide rails are arranged parallel to each other between the two flat ceramic membranes b and located on both sides of the aeration branch pipe. The slider is slidably connected to the guide rails and can slide back and forth. The plastic wiping plate is fixedly connected to the top of the slider.

[0015] Preferably, the flat ceramic film b is provided with an electromagnetic coil.

[0016] Preferably, the drain pipe is equipped with a first stop valve, a pressure gauge, a peristaltic pump and a first flow meter, and the backwash pipe is equipped with a second stop valve, a second flow meter and a backwash pump, and one end of the backwash pipe is connected to the drain pipe.

[0017] Preferably, the number of ceramic membrane modules is an even number, and each of the drain pipes connects two ceramic membrane modules.

[0018] Preferably, the inner walls of the membrane tank, the inlet tank, and the outlet tank are all coated with resin-based paint.

[0019] Preferably, the method for coating the flat ceramic film a with polytetrafluoroethylene is as follows:

[0020] Dilute 60% of the polytetrafluoroethylene emulsion to 0.1% with distilled water;

[0021] The flat ceramic membrane a was placed in the diluted solution and filtered for 30 seconds, so that polytetrafluoroethylene particles were deposited on the surface of the flat ceramic membrane a.

[0022] Place the flat ceramic film a in a muffle furnace and set it to 340℃ for 5 minutes.

[0023] Preferably, the method for coating the flat ceramic film b with ferrite is as follows:

[0024] Weigh Cu(NO3)2, Fe(NO3)3·9H2O and citric acid monohydrate in a molar ratio of 1:2:3;

[0025] First, Cu(NO3)2 and Fe(NO3)3·9H2O were prepared into a metal salt solution. Citric acid monohydrate was dissolved in ultrapure water to form a citric acid solution. The citric acid solution was then stirred and heated to 60°C in a water bath. The metal salt solution was then poured into a separation funnel and slowly added dropwise to the citric acid solution. The solution was then placed in a water bath for 1 hour and aged at room temperature for 12 hours to form a precursor solution.

[0026] After completely immersing the flat ceramic membrane b in the precursor solution for 20 seconds, remove it, let it cool for 3 minutes, and then dry it in an oven at 60℃ for 2-3 hours until the surface of the flat ceramic membrane b turns orange.

[0027] After drying, the flat ceramic film b is placed in a muffle furnace and sintered in air at 600°C for 150 minutes.

[0028] The beneficial effects of this invention are:

[0029] This invention features multiple ceramic membrane modules arranged side-by-side within a membrane tank, which can improve the filtration efficiency of sludge-discharged water within the tank. Simultaneously, a sludge scraping component is provided on the side of each ceramic membrane module, and the effluent tank is connected to the ceramic membrane module via a backwash pipe. The combined effect of the reciprocating movement of the sludge scraping component on the ceramic membrane module and the backwashing action of the backwash pipe maintains a high membrane flux, thereby improving the sludge-discharged water recovery rate. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the ceramic membrane concentration system for treating sludge discharge from a water plant according to the present invention.

[0031] Figure 2 This is a top view of the membrane pool;

[0032] Figure 3 This is a schematic diagram of the structure of a ceramic membrane module.

[0033] Explanation of the reference numerals in the figure:

[0034] 1. Membrane tank; 2. Ceramic membrane module; 3. Inlet tank; 4. Inlet pipe; 5. Outlet tank; 6. Drain pipe; 7. Backwash pipe; 8. Sludge scraper assembly; 9. Membrane support frame; 10. Flat ceramic membrane a; 11. Flat ceramic membrane b; 12. Aeration branch pipe; 13. Guide rail; 14. Slider; 15. Plastic wiper; 16. First stop valve; 17. Pressure gauge; 18. Peristaltic pump; 19. First flow meter; 20. Second stop valve; 21. Second flow meter; 22. Backwash pump; 23. Drain pipe; 24. Inlet pump; 25. Sludge discharge pipe; 26. Aeration pump; 27. Gas flow meter; 28. Aeration main pipe. Detailed Implementation

[0035] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. These embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0036] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0039] Examples, such as Figure 1 , Figure 2 , Figure 3 As shown, a ceramic membrane concentration system for treating sludge discharge from a water plant includes:

[0040] Membrane pool 1.

[0041] Ceramic membrane module 2, there are multiple ceramic membrane modules 2, and multiple ceramic membrane modules 2 are arranged side by side in the membrane tank 1.

[0042] The bottom of the water inlet tank 3 is connected to the top of the membrane tank 1 via the water inlet pipe 4. The water inlet pipe 4 is equipped with a water inlet pump 24 for pumping the sludge discharge water in the water inlet tank 3 into the membrane tank 1.

[0043] The water outlet tank 5 is connected to the top of the ceramic membrane module 2 via a drain pipe 6. The drain pipe 6 is equipped with a peristaltic pump 18 for pumping the filtered water in the ceramic membrane module 2 into the water outlet tank 5. The bottom of the water outlet tank 5 is connected to the top of the ceramic membrane module 2 via a backwash pipe 7. The backwash pipe 7 is equipped with a backwash pump 22 for pumping the clean water in the water outlet tank 5 into the ceramic membrane module 2 for backwashing.

[0044] The sludge scraping assembly 8 is disposed on one side of the ceramic membrane assembly 2, and the sludge scraping assembly 8 is capable of reciprocating and scraping the ceramic membrane assembly 2.

[0045] This application arranges multiple ceramic membrane modules 2 side by side in the membrane tank 1, which can improve the filtration efficiency of the sludge discharge water in the membrane tank 1. At the same time, this application provides a sludge scraping component 8 on the side of the ceramic membrane module 2, and connects the outlet tank 5 to the ceramic membrane module 2 through the backwash pipe 7. The sludge scraping effect of the sludge scraping component 8 on the ceramic membrane module 2 by reciprocating movement and the backwashing effect of the backwash pipe 7 on the ceramic membrane module 2 can maintain a high membrane flux of the ceramic membrane module 2, thereby improving the recovery rate of the sludge discharge water.

[0046] In one specific embodiment, such as Figure 2 , Figure 3 As shown, the ceramic membrane module 2 includes a membrane support frame 9, a flat ceramic membrane a10, and a flat ceramic membrane b11. The membrane support frame 9 is fixedly installed vertically in the membrane tank 1. The flat ceramic membrane a10 is fixedly installed on one side of the membrane support frame 9 and is loaded with polytetrafluoroethylene (PTFE) to modify the membrane a10, making it smoother and reducing the adhesion of sludge to its surface. The flat ceramic membrane b11 is fixedly installed on the other side of the membrane support frame 9 and is loaded with ferrite to modify the membrane b11, thereby improving its antifouling ability and its ability to remove metal ions.

[0047] Preferably, as shown in Figure 2, the flat ceramic membranes b11 of two adjacent ceramic membrane modules 2 are arranged facing each other, that is, two ceramic membrane modules 2 form a group, and flat ceramic membranes b11 are installed on the side of the two ceramic membrane modules 2 that are close to each other in the same group, and flat ceramic membranes a10 are installed on the side of the two ceramic membrane modules 2 that are far from each other in the same group. An aeration branch pipe 12 is provided at the bottom of the membrane tank 1. The aeration branch pipe 12 is arranged parallel to the ceramic membrane module 2, and the number of aeration branch pipes 12 on the side closer to the flat ceramic membrane a10 is greater than the number of aeration branch pipes 12 on the side closer to the flat ceramic membrane b11. By controlling the air volume difference on both sides of the ceramic membrane module 2, the sludge discharge water in the membrane tank 1 flows from the flat ceramic membrane a10 to the flat ceramic membrane b11, thereby causing the sludge in the sludge discharge water to adhere to the flat ceramic membrane b11.

[0048] Specifically, such as Figure 2 As shown, two aeration branch pipes 12 are set on the side near the flat ceramic membrane a10, and one aeration branch pipe 12 is set between the two flat ceramic membranes b11. One end of all the aeration branch pipes 12 is vertically connected to the aeration main pipe 28. The aeration main pipe 28 axially penetrates the membrane tank 1, and a gas flow meter 27 and an aeration pump 26 are installed on the aeration main pipe 28 to control the aeration amount in the membrane tank 1 through the aeration pump 26.

[0049] Meanwhile, when the ceramic membrane assembly 2 is placed in the membrane tank 1, the flat ceramic membrane a10 is positioned facing the tank wall, and the flat ceramic membrane b11 are positioned opposite each other in pairs.

[0050] This arrangement is because: by installing two aeration branch pipes 12 on the flat ceramic membrane a10 and one aeration branch pipe 12 on the flat ceramic membrane b11, an aeration difference can be created on both sides of the ceramic membrane component 2, thereby causing the sludge from the flat ceramic membrane a10 to flow to the flat ceramic membrane b11, thus concentrating the sludge on the flat ceramic membrane b11.

[0051] More preferably, such as 1. Figure 2 As shown in the figure, there are four ceramic membrane components 2, and two ceramic membrane components 2 form a group; there are two sludge scraping components 8, and each sludge scraping component 8 is set between two ceramic membrane components 2 in the same group, that is, the sludge scraping component 8 is set between the two flat ceramic membranes b11 of the two ceramic membrane components 2.

[0052] The sludge scraping assembly 8 includes a guide rail 13, a slider 14, and a plastic scraper 15. There are two guide rails 13, arranged parallel to the flat ceramic membrane b11, and each guide rail 13 is positioned on one side of the aeration branch pipe 12. The slider 14 is slidably connected to the guide rail 13 and can slide back and forth. The plastic scraper 15 is fixedly connected to the top of the slider 14 and is perpendicular to the flat ceramic membrane b11. During the reciprocating sliding of the slider 14, the plastic scraper 15 can scrape off the sludge adhering to the two flat ceramic membranes b11.

[0053] This configuration is based on the fact that when the sludge concentration in membrane tank 1 is too high, the membrane flux of ceramic membrane module 2 will drop sharply. In this embodiment, a guide rail 13 is installed in membrane tank 1, between two flat ceramic membranes b11, and a plastic wiping plate 15 perpendicular to the flat ceramic membrane b11 is mounted on the slider 14. When the sludge layer on the flat ceramic membrane b11 is too thick, the slider 14 can be controlled to move the plastic wiping plate 15 to scrape off the sludge on both sides of the flat ceramic membrane b11.

[0054] Preferably, the flat ceramic membrane b11 is provided with an electromagnetic coil (not shown in the figure), and the electromagnetic coil is located on the inner side of the flat ceramic membrane b11, so that by energizing the electromagnetic coil, in conjunction with the magnetic powder added to the sludge discharge water, the sludge in the sludge discharge water is concentrated and adhered to the flat ceramic membrane b11.

[0055] In one specific embodiment, such as Figure 1 As shown, one end of the drain pipe 6 is connected to the interface at the top of the ceramic membrane module 2, and the other end of the drain pipe 6 is inserted into the outlet tank 5 from the top. A first stop valve 16, a pressure gauge 17, a peristaltic pump 18, and a first flow meter 19 are installed on the drain pipe 6. There are two first stop valves 16, which are installed one-to-one at both ends of the drain pipe 6 so that the filtered water in the ceramic membrane module 2 flows to the outlet tank 5 through the pumping action of the peristaltic pump 18.

[0056] One end of the backwash pipe 7 is connected to the interface at the top of the ceramic membrane module 2, and the other end of the backwash pipe 7 is connected to the bottom of the outlet water tank 5. A second stop valve 20, a second flow meter 21, and a backwash pump 22 are installed on the backwash pipe 7 so that the clean water (i.e. the filtered water) in the outlet water tank 5 can flow to the ceramic membrane module 2 through the pumping action of the backwash pump 22, thereby realizing the backwashing of the flat ceramic membrane b11 and ensuring a high membrane flux of the ceramic membrane module 2.

[0057] Preferably, one end of the backwash pipe 7 is connected to the drain pipe 6 to reduce the cost of pipe laying.

[0058] More preferably, each drain pipe 6 connects to two ceramic membrane assemblies 2.

[0059] In one specific embodiment, the inner wall of the membrane tank 1 is coated with resin-based paint, the inner wall of the inlet tank 3 is coated with resin-based paint, and the inner wall of the outlet tank 5 is coated with resin-based paint to improve the corrosion resistance of the membrane tank 1, the inlet tank 3, and the outlet tank 5.

[0060] In one specific embodiment, the method for coating the flat ceramic film a10 with polytetrafluoroethylene is as follows:

[0061] A polytetrafluoroethylene emulsion with a solid content of 60% was diluted with distilled water to a solid content of 0.1% to obtain a diluted solution for later use.

[0062] The flat ceramic membrane a10 was placed in a dilution solution and filtered for 30 seconds using a vacuum pump, which allowed polytetrafluoroethylene particles to be deposited on the surface of the flat ceramic membrane a10.

[0063] The filtered flat ceramic membrane a10 was placed in a muffle furnace and fired at 340℃ for 5 minutes.

[0064] The method for coating the flat ceramic film b11 with ferrite is as follows:

[0065] Weigh Cu(NO3)2, Fe(NO3)3·9H2O and citric acid monohydrate in a molar ratio of 1:2:3.

[0066] Cu(NO3)2 and Fe(NO3)3·9H2O were prepared into a metal salt solution, and citric acid monohydrate was dissolved in ultrapure water to form a citric acid solution.

[0067] First, the citric acid solution was stirred and heated to 60°C in a water bath; then, the metal salt solution was poured into a separation funnel and slowly added dropwise into the citric acid solution. The solution was then placed in a water bath for 1 hour and aged at room temperature for 12 hours to form a precursor solution.

[0068] After completely immersing the flat ceramic membrane b11 in the precursor solution for 20 seconds, remove it, let it cool for 3 minutes, and then dry it in an oven at 60°C for 2-3 hours until the surface of the flat ceramic membrane b11 turns orange.

[0069] After drying, the flat ceramic film b11 is placed in a muffle furnace and sintered in air at 600°C for 150 minutes.

[0070] This setup is because, based on the different properties exhibited by the modified flat ceramic membranes a10 and b11, flat ceramic membrane a10 is smoother than flat ceramic membrane b11. Therefore, the adhesion of pollutants to flat ceramic membrane a10 is lower, so flat ceramic membrane a10 is mainly used for effluent, while flat ceramic membrane b11 is mainly used for sludge concentration, thereby increasing the sludge concentration ratio.

[0071] The working process of the ceramic membrane concentration system of the present invention is as follows:

[0072] First, open the stop valve on the inlet pipe 4 and the inlet pump 24 to allow the sludge discharge water in the inlet tank 3 to be injected into the membrane tank 1. Stop the water intake when the membrane tank 1 reaches the highest water level.

[0073] Turn on the peristaltic pump 18 and the first stop valve 16 on the drain pipe 6 to concentrate the sludge water; at the same time, turn on the aeration pump 26 and aeration valve on the aeration main pipe 28 to continuously aerate the entire concentration process, and record the membrane effluent velocity and pressure changes in real time through the first flow meter 19 and pressure gauge 17.

[0074] When the real-time membrane flux drops to 60% of the initial flux, the control slider 14 moves back and forth along the guide rail 13. First, the plastic scraper 15 scrapes off the sludge layer deposited on the flat ceramic membrane b11. Then, the backwash pump 22 and the second stop valve 20 on the backwash pipe 7 are opened to backwash the ceramic membrane module 2. The backwash water volume is twice the initial outflow volume, and the backwash time is controlled at about 30 seconds.

[0075] Membrane tank 1 is operated periodically. In the last cycle, magnetic powder is added to membrane tank 1 and the electromagnetic coil on the flat ceramic membrane b11 is energized to further concentrate the sludge water.

[0076] Open the sludge discharge valve on the sludge discharge pipe 25 at the bottom of membrane tank 1 to discharge the concentrated sludge water in membrane tank 1.

[0077] Compared with the prior art, this application has at least the following beneficial technical effects:

[0078] (1) This application coats the two sides of the ceramic membrane module with different materials. The flat ceramic membrane a is coated with polytetrafluoroethylene to make its surface smoother and greatly reduce the adhesion of sludge to its surface. The flat ceramic membrane b is coated with ferrite, which can improve the antifouling ability and the ability to remove metal ions. At the same time, the ceramic membrane has the characteristics of high mechanical strength, easy regeneration and cleaning, strong antifouling, long service life and high separation efficiency, which can maximize the concentration ratio of sludge.

[0079] (2) This application installs a guide rail and a slider between two flat ceramic membranes b, and sets a plastic wiping plate on the slider. The plastic wiping plate can scrape off the sludge on the ceramic membrane assembly, thereby maximizing the mitigation of reversible fouling of the ceramic membrane, increasing the operating time of the membrane tank, and increasing the sludge concentration ratio.

[0080] (3) This application has two aeration branch pipes installed on the side near the flat ceramic membrane a and one aeration branch pipe installed on the side entering the flat ceramic membrane b. Aeration can slow down the rate at which sludge adheres to the membrane surface and prevent the natural settling of the sludge discharge water. At the same time, due to the difference in aeration volume on both sides of the ceramic membrane module, the sludge accumulated on the flat ceramic membrane a can flow into the flat ceramic membrane b through the air volume difference, making the sludge more concentrated on the flat ceramic membrane b, thereby increasing the sludge concentration. When the sludge concentration is high, magnetic powder can be added to the membrane tank and the electromagnetic coil on the flat ceramic membrane b can be energized to make the sludge adhere to the flat ceramic membrane b. At the same time, the slider is controlled to drive the plastic scraper to move back and forth, thereby scraping off the sludge attached to the flat ceramic membrane b. When the membrane flux is low, the operation is stopped and the sludge discharge valve at the bottom of the membrane tank is opened to discharge the sludge discharge water in the membrane tank. At this time, the sludge discharge water has a very high sludge concentration, and the recovery rate is greatly improved.

[0081] (4) This application is equipped with online water quality monitoring instruments at both the inlet tank and the outlet tank, which can detect changes in the inlet water quality and the outlet water quality in real time; at the same time, the inlet tank, the outlet tank and the membrane tank are coated with resin-based paint, which can effectively prevent corrosion.

[0082] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A ceramic membrane concentration system for treating sludge discharge from a water plant, characterized in that, include: Membrane pool (1); Ceramic membrane modules (2), multiple ceramic membrane modules (2) are arranged side by side in the membrane tank (1); The bottom of the water inlet tank (3) is connected to the top of the membrane tank (1) through the water inlet pipe (4); The water outlet tank (5) is connected to the top of the ceramic membrane assembly (2) via a drain pipe (6) and the bottom of the water outlet tank (5) is connected to the top of the ceramic membrane assembly (2) via a backwash pipe (7). Scraping assembly (8) is disposed on one side of ceramic membrane assembly (2) and is capable of reciprocating and scraping ceramic membrane assembly (2); The ceramic membrane module (2) includes a membrane support frame (9), a flat ceramic membrane a (10) and a flat ceramic membrane b (11). The flat ceramic membrane a (10) is fixedly installed on one side of the membrane support frame (9), and the flat ceramic membrane b (11) is fixedly installed on the other side of the membrane support frame (9). The flat ceramic membrane a (10) is loaded with polytetrafluoroethylene, and the flat ceramic membrane b (11) is loaded with ferrite. The flat ceramic membrane b (11) of two adjacent ceramic membrane modules (2) are arranged opposite each other. An aeration branch pipe (12) is provided at the bottom of the membrane tank (1), and the number of aeration branch pipes (12) provided on the side of the flat ceramic membrane a (10) is greater than the number of aeration branch pipes (12) provided on the side of the flat ceramic membrane b (11). The sludge scraping assembly (8) includes a guide rail (13), a slider (14), and a plastic wiping plate (15). The two guide rails (13) are arranged in parallel between two flat ceramic membranes b (11) and located on both sides of the aeration branch pipe (12). The slider (14) is slidably connected to the guide rail (13) and can slide back and forth. The plastic wiping plate (15) is fixedly connected to the top of the slider (14).

2. The ceramic membrane concentration system for treating sludge discharge from a water plant according to claim 1, characterized in that, An electromagnetic coil is provided on the flat ceramic membrane b (11).

3. The ceramic membrane concentration system for treating sludge discharge from a water plant according to claim 1, characterized in that, The drain pipe (6) is equipped with a first stop valve (16), a pressure gauge (17), a peristaltic pump (18) and a first flow meter (19), and the backwash pipe (7) is equipped with a second stop valve (20), a second flow meter (21) and a backwash pump (22), and one end of the backwash pipe (7) is connected to the drain pipe (6).

4. A ceramic membrane concentration system for treating sludge discharge from a water plant according to claim 1, characterized in that, The number of ceramic membrane modules (2) is even, and each of the drain pipes (6) connects two ceramic membrane modules (2).

5. A ceramic membrane concentration system for treating sludge discharge from a water plant according to claim 1, characterized in that, The inner walls of the membrane tank (1), the inlet tank (3), and the outlet tank (5) are all coated with resin-based paint.

6. A ceramic membrane concentration system for treating sludge discharge from a water plant according to claim 1, characterized in that, The method for coating the flat ceramic membrane a (10) with polytetrafluoroethylene is as follows: Dilute 60% of the polytetrafluoroethylene emulsion to 0.1% with distilled water; The flat ceramic membrane a (10) was placed in a dilution solution and filtered for 30 seconds, so that polytetrafluoroethylene particles were deposited on the surface of the flat ceramic membrane a (10). Place the flat ceramic film a (10) in a muffle furnace and set it to 340℃ for 5 minutes.

7. A ceramic membrane concentration system for treating sludge discharge from a water plant according to claim 1, characterized in that, The method for coating the flat ceramic film b (11) with ferrite is as follows: Weigh Cu(NO3)2, Fe(NO3)3·9H2O and citric acid monohydrate in a molar ratio of 1:2:3; First, Cu(NO3)2 and Fe(NO3)3·9H2O were prepared into a metal salt solution. Citric acid monohydrate was dissolved in ultrapure water to form a citric acid solution. The citric acid solution was then stirred and heated to 60°C in a water bath. The metal salt solution was then poured into a separation funnel and slowly added dropwise to the citric acid solution. The solution was then placed in a water bath for 1 hour and aged at room temperature for 12 hours to form a precursor solution. After completely immersing the flat ceramic membrane b(11) in the precursor solution for 20 seconds, remove it, let it cool for 3 minutes, and then dry it in an oven at 60°C for 2-3 hours until the surface of the flat ceramic membrane b(11) turns orange. After drying, the flat ceramic film b (11) was placed in a muffle furnace and sintered in air at 600 °C for 150 min.

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