A type of urban sewage treatment equipment

Abstract

This invention relates to the field of wastewater treatment technology. The invention discloses an urban wastewater treatment device, including a base. A membrane frame is fixedly connected to the top of the base. Air vents are provided on the membrane frame. Aeration pipes are symmetrically connected to the bottom of the membrane frame. A plurality of MBR membrane elements are equidistantly installed on the membrane frame. A plurality of water valves are correspondingly provided on the top of the membrane frame. A flexible hose is connected to the input end of each water valve. The end of the flexible hose furthest from the water valve is connected to the top of the MBR membrane element. An installation platform is fixedly connected to the top of the membrane frame. A back pipe is fixedly connected to the installation platform. A connector is slidably connected to the bottom of the back pipe. One bottom end of the connector is fixedly sleeved to the bottom of the MBR membrane element. A through hole is provided on the connector. After the MBR membrane element and membrane frame are sealed, a protrusion is inserted into one of the through holes, and the connector drives the MBR membrane element to move upwards, protecting the membrane filaments and preventing damage during membrane removal.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to an urban wastewater treatment device. Background Technology

[0002] MBR membrane, or membrane module in a membrane bioreactor, is a wastewater treatment process that combines membrane separation technology with biological treatment technology. Through the efficient separation function of the membrane, the MBR membrane retains activated sludge and large organic molecules in the bioreactor, achieving complete separation of hydraulic retention time and sludge retention time. This makes the biological treatment process more stable and efficient. At the same time, the filtration function of the membrane can effectively remove suspended solids, bacteria, viruses and other pollutants from the wastewater, thereby obtaining high-quality effluent.

[0003] During the operation of a wastewater membrane tank, excessively high water flow velocity or sudden water flow impact can generate significant shear forces on the membrane fibers. For example, instantaneous changes in water flow during pump start-up or shutdown can impact the membrane fibers. Over long-term use, this can lead to fatigue damage and eventual breakage of the membrane fibers. In addition, sludge in the membrane tank can deteriorate the sludge settling performance. Large amounts of sludge adhere to the membrane surface, making it difficult to remove through aeration or other methods. This can not only clog the membrane pores but also cause blockage and damage to the membrane module. When removing the MBR membrane from the membrane tank, the sludge adhering to the membrane fibers increases the weight at the bottom of the MBR membrane, making removal difficult and potentially causing secondary damage to the membrane fibers. To address these issues, we propose a municipal wastewater treatment device. Summary of the Invention

[0004] The purpose of this invention is to provide an urban wastewater treatment device to solve the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: It includes a base, a membrane frame fixedly connected to the top of the base, an air vent on the membrane frame, aeration pipes symmetrically connected to the bottom of the membrane frame, a plurality of MBR membrane elements equidistantly installed on the membrane frame, a plurality of water valves correspondingly provided on the top of the membrane frame, a flexible hose connected to the input end of each water valve, the end of the flexible hose away from the water valve connected to the top of the MBR membrane element, an installation platform fixedly connected to the top of the membrane frame, a back pipe fixedly connected to the installation platform, a connector slidably connected to the bottom of the back pipe, one bottom end of the connector fixedly sleeved to the bottom of the MBR membrane element, and a through hole penetrating the connector;

[0005] The output end of the water valve is connected to a transmitter, which is used to detect the input water pressure and water volume of the water valve;

[0006] A vertical rod is rotatably connected to the inner axis of the back tube, and a wheel is fixedly connected to the bottom of the vertical rod. There are two wheels, and another wheel is rotatably installed inside the membrane frame. A belt is sleeved on the two wheels. Two mounting rods are fixedly connected to the top of one of the wheels located inside the membrane frame. The mounting rods are symmetrically arranged.

[0007] A slide rod is fixedly installed inside the membrane frame at the top of the wheel. A spring is sleeved on the slide rod, and a push plate is slidably connected to the slide rod. The push plate abuts against the mounting rod.

[0008] Preferably, the top of the membrane frame is provided with a plurality of internal toothed rings, the internal toothed rings are rotatably connected to the membrane frame, the bottom of the internal toothed rings are fixedly connected to the two mounting rods, and a plurality of sealing members are engaged on the inner surface of the internal toothed rings.

[0009] Preferably, the sealing member is rotatably connected to the membrane frame, the sealing member is used to block the air vents on the membrane frame, and a push rod is fixedly connected to the top of the sealing member.

[0010] Preferably, a plurality of sealing members 2 are rotatably connected to one side of the bottom of the MBR membrane element, and an arc strip is fixedly connected to the bottom of the sealing member 2. The surface of the arc strip abuts against the top of the push rod. The push rod is used to open the sealing member 2. A spring 2 is connected to the side of the sealing member 2, and the spring 2 is connected to the MBR membrane element.

[0011] Preferably, a drive motor is fixedly installed on the mounting platform, a lead screw is rotatably connected to the output end of the drive motor, a sliding component is threaded onto the lead screw, a spring is sleeved on the side of the sliding component, and a hanging plate is slidably connected to the sliding component.

[0012] Preferably, the end face of the installation platform is symmetrically provided with an electric telescopic rod, the output end of the electric telescopic rod is connected to a connecting rod, and the connecting rod abuts against the hanging plate.

[0013] Preferably, a second drive motor is fixedly installed on the other side of the installation platform. The output end of the second drive motor is rotatably connected to a second lead screw. A lifting plate is threaded onto the second lead screw, and the lifting plate is slidably connected to the base.

[0014] Preferably, a plurality of sliders are slidably connected to the lifting plate, springs are sleeved on the side of the sliders, and a protrusion is fixedly connected to the top of the sliders, the protrusion being movably inserted into the through hole.

[0015] Preferably, a rack is fixedly connected to the top of the hanging plate, and a gear is fixedly connected to the top of the vertical rod, the gear being movably engaged with the rack.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. In this invention, when the MBR membrane fibers are damaged in the membrane tank, the group of MBR membrane elements with damaged fibers is located by monitoring the difference in flow data from the transmitter. Then, the second drive motor is started, which drives the hanging plate to move forward until it is aligned with the side of one of the group of MBR membrane elements with damaged fibers, so that the air port is closed. During the rotation of the internal gear ring, the push plate is pushed on the slide rod by the rotation of the mounting rod, which compresses the first spring, keeps the air port closed, prevents water from entering the membrane frame, and maintains normal aeration flux.

[0018] 2. In this invention, during the membrane removal stage, as the sealing component one is closed, the thrust applied to the arc strip gradually decreases, causing the four sealing components two to automatically return to their original positions under the pressure of the spring two, sealing the bottom of the MBR membrane. Before the MBR membrane is removed from the membrane frame, the membrane frame and the MBR membrane are automatically sealed to prevent sewage from entering and avoid pollution of the treated water.

[0019] 3. In this invention, after the MBR membrane element and membrane frame are sealed, the lifting plate is raised upwards. Before this, the scraper pushes the slider closer to the membrane frame, compressing the spring and positioning the protrusion below the through hole. During the lifting process, the lifting plate connects to one of the through holes through the protrusion and drives the MBR membrane element upwards through the connector until it is lifted out of the membrane tank. The MBR membrane element is then repaired or replaced, and the membrane fibers of the MBR membrane are protected to prevent them from being damaged during the removal process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the membrane frame and MBR membrane element of the present invention;

[0022] Figure 3 This is a schematic diagram of the back tube and wheel structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the unfolded structure of the mounting rod and the internal toothed ring of the present invention;

[0024] Figure 5 This is a bottom view of the structure of the MBR membrane device of the present invention;

[0025] Figure 6 This is a top view of the structure of the present invention;

[0026] Figure 7 For the present invention Figure 6 Enlarged structural diagram of region A in the middle;

[0027] Figure 8 For the present invention Figure 6 A magnified structural diagram of region B in the middle;

[0028] Figure 9 This is a schematic diagram of the process flow of the present invention.

[0029] In the diagram: 1. Base; 2. Membrane frame; 201. Air inlet; 3. Aeration pipe; 4. MBR membrane module; 5. Water valve; 6. Hoses; 7. Mounting platform; 8. Back pipe; 9. Connector; 10. Through hole; 11. Vertical rod; 12. Wheel; 13. Belt; 14. Mounting rod; 15. Slide rod; 16. Spring 1; 17. Push plate; 18. Internal toothed ring; 19. Sealing component 1; 20. Push rod; 21. Sealing component two; 22. Arc strip; 23. Spring two; 24. Transmitter; 25. Drive motor one; 26. Lead screw one; 27. Sliding component; 28. Spring three; 29. ​​Hanging plate; 30. Electric telescopic rod; 31. Connecting rod; 32. Drive motor two; 33. Lead screw two; 34. Lifting plate; 35. Slider; 36. Spring four; 37. Protrusion; 38. Rack; 39. Gear. Detailed Implementation

[0030] 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.

[0031] Please see Figures 1 to 9 The present invention provides a technical solution comprising: a base 1, a membrane frame 2 fixedly connected to the top of the base 1, an air port 201 opened on the membrane frame 2, an aeration pipe 3 symmetrically connected to the bottom of the membrane frame 2, a plurality of MBR membrane elements 4 equidistantly installed on the membrane frame 2, a plurality of water valves 5 correspondingly provided on the top of the membrane frame 2, a hose 6 connected to the input end of the water valve 5, the end of the hose 6 away from the water valve 5 connected to the top of the MBR membrane element 4, an installation platform 7 fixedly connected to the top of the membrane frame 2, a back pipe 8 fixedly connected to the installation platform 7, a connector 9 slidably connected to the bottom of the back pipe 8, one bottom end of the connector 9 fixedly sleeved to the bottom of the MBR membrane element 4, and a through hole 10 opened through the connector 9;

[0032] The output end of water valve 5 is connected to transmitter 24, which is used to detect the input water pressure and water volume of water valve 5.

[0033] A vertical rod 11 is rotatably connected to the inner axis of the back tube 8. A wheel 12 is fixedly connected to the bottom of the vertical rod 11. There are two wheel 12s. Another wheel 12 is rotatably installed inside the membrane frame 2. A belt 13 is sleeved on the two wheel 12s. Two mounting rods 14 are fixedly connected to the top of one of the wheel 12s located inside the membrane frame 2. The mounting rods 14 are symmetrically arranged.

[0034] Inside the membrane frame 2, a slide rod 15 is fixedly installed on the top of the wheel 12. A spring 16 is sleeved on the slide rod 15. A push plate 17 is slidably connected to the slide rod 15, and the push plate 17 abuts against the mounting rod 14.

[0035] The top of the membrane frame 2 is provided with several internal toothed rings 18, which are rotatably connected to the membrane frame 2. The bottom of the internal toothed rings 18 is fixedly connected to two mounting rods 14. Several sealing elements 19 are engaged on the inner surface of the internal toothed rings 18.

[0036] The sealing component 19 is rotatably connected to the membrane frame 2. The sealing component 19 is used to block the air port 201 on the membrane frame 2. A push rod 20 is fixedly connected to the top of the sealing component 19.

[0037] Several sealing members 21 are rotatably connected to one side of the bottom of the MBR membrane 4. An arc strip 22 is fixedly connected to the bottom of the sealing member 21. The surface of the arc strip 22 abuts against the top of the push rod 20. The push rod 20 is used to open the sealing member 21. A spring 23 is connected to the side of the sealing member 21. The spring 23 is connected to the MBR membrane 4.

[0038] A drive motor 25 is fixedly installed on the mounting platform 7. A lead screw 26 is rotatably connected to the output end of the drive motor 25. A sliding component 27 is threadedly connected to the lead screw 26. A spring 28 is sleeved on the side of the sliding component 27. A hanging plate 29 is slidably connected to the sliding component 27.

[0039] An electric telescopic rod 30 is symmetrically provided on the end face of the mounting platform 7. The output end of the electric telescopic rod 30 is connected to a connecting rod 31, which abuts against the hanging plate 29.

[0040] On the other side of the mounting platform 7, a second drive motor 32 is fixedly installed. The output end of the second drive motor 32 is rotatably connected to a second lead screw 33. A lifting plate 34 is threadedly connected to the second lead screw 33. The lifting plate 34 is slidably connected to the base 1.

[0041] Several sliders 35 are slidably connected to the lifting plate 34. Springs 36 are sleeved on the side of the sliders 35. A protrusion 37 is fixedly connected to the top of the sliders 35. The protrusion 37 is movably inserted into the through hole 10.

[0042] A rack 38 is fixedly connected to the top of the hanging plate 29, and a gear 39 is fixedly connected to the top of the vertical rod 11. The gear 39 and the rack 38 are in movable meshing.

[0043] In this embodiment, the transmitter 24 is a device that converts physical measurement signals or ordinary electrical signals into standard electrical signals for output. When the membrane filaments of the MBR membrane 4 are damaged or blocked, the water flow of the water valve 5 will increase or decrease. Multiple resistors are integrated on the sensor chip of the piezoresistive pressure transmitter 24. These resistors are usually arranged on the silicon diaphragm. When water pressure acts on the silicon diaphragm, the silicon diaphragm deforms, causing the resistance value to change. By comparing with the normal flow of the water valve 5, a comparison can be made. In addition, by positioning and equidistantly installing multiple transmitters 24, the distance that the drive motor 25 can drive the slide to move becomes more accurate.

[0044] In this embodiment, when the sludge concentration in the membrane tank is too high, the sludge fluidity becomes poor, which increases the pressure on the membrane surface, leading to increased membrane filtration resistance and decreased water permeation flux. In addition, when sludge bulking occurs, the sludge settling performance deteriorates, and a large amount of sludge adheres to the membrane surface, making it difficult to remove by aeration or other means. This not only clogs the membrane pores but may also cause blockage and damage to the membrane module, affecting the normal operation of the system.

[0045] In this embodiment, the wastewater treatment process includes: 1. Pretreatment: Wastewater enters the septic tank through the sewage pipe network and is filtered by a screen to remove larger solid debris; 2. Adjustment: Wastewater enters the adjustment tank, where a stirrer is installed at the bottom, and an aeration device ensures that the water quality and quantity are fully and evenly mixed to prevent sludge deposition and to regulate water quality and quantity; 3. Hydrolysis and acidification: Wastewater is pumped from the adjustment tank to the hydrolysis and acidification tank, where microorganisms perform preliminary degradation of the wastewater and reduce the organic load; 4. Aerobic treatment: The effluent from the hydrolysis and acidification tank enters the contact oxidation tank, where organic matter is further decomposed into inorganic matter under aeration, and the aerobic tank water flows by gravity to the membrane tank; 5. Membrane separation: The membrane tank water in the membrane tank passes through the MBR membrane, separating water from impurities; 6. Disinfection: The treated wastewater is disinfected with a disinfectant; 7. Discharge: The disinfected water enters the clear water tank and is discharged in compliance with standards; 8. Sludge treatment: The sludge mainly comes from the excess sludge in the MBR tank and is periodically discharged to the sludge thickening tank and septic tank for periodic treatment;

[0046] The method of use and advantages of this invention: The working process of this urban sewage treatment equipment is as follows:

[0047] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown:

[0048] S1: When the MBR membrane fibers are damaged in the membrane tank, the group of MBR membrane elements 4 with damaged fibers is located by monitoring the difference in flow data from transmitter 24. Then, drive motor 22 is started, causing the mounting plate 29 to move forward until it aligns with the side of one of the MBR membrane elements 4 with damaged fibers. Subsequently, electric telescopic rod 30 and drive motor 25 are activated. Electric telescopic rod 30 pushes connecting rod 31 forward, and connecting rod 31 abuts against mounting plate 29, causing mounting plate 29 to compress spring 38, so that mounting plate 29 fits against the side of sliding member 27. During the process, rack 38 and damaged MBR The gear 39 corresponding to the membrane element 4 meshes and drives the gear 39 to rotate. The bottom of the gear 39 drives a wheel 12 fixedly connected to it to rotate. Through the belt 13, it drives another wheel 12 to rotate synchronously. The wheel 12 drives the internal gear ring 18 to rotate through the mounting rod 14 at the top. During the rotation of the internal gear ring 18, it drives the four sealing parts 19 meshing with it to rotate, so that the air port 201 is closed. During the rotation of the internal gear ring 18, the push plate 17 is pushed on the slide rod 15 by the rotation of the mounting rod 14, which compresses the spring 16 and keeps the air port 201 closed.

[0049] S2: During the closing process of the sealing component 19, the push rod 20 rotates and turns inward, and the thrust applied to the arc strip 22 gradually decreases, so that the four sealing components 21 automatically return to their original positions under the pressure of the spring 23, sealing the bottom of the MBR membrane 4. Before the MBR membrane 4 is removed from the membrane frame 2, the membrane frame 2 and the MBR membrane 4 are automatically sealed to prevent sewage from entering.

[0050] S3: After the MBR membrane element 4 and membrane frame 2 are sealed, the drive motor 32 is started to lift the lifting plate 34 upward. Before this, the scraper pushes the slider 35 closer to the membrane frame 2, so that the spring 36 is compressed and the protrusion 37 is located below the through hole 10. During the lifting process, the lifting plate 34 is inserted into one of the through holes 10 through the protrusion 37, and drives the MBR membrane element 4 to move upward through the connector 9 until it is lifted out of the membrane pool, and the MBR membrane element 4 is repaired or replaced.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A type of urban sewage treatment equipment, characterized in that, The system includes a base (1), a membrane frame (2) fixedly connected to the top of the base (1), an air port (201) on the membrane frame (2), an aeration pipe (3) symmetrically connected to the bottom of the membrane frame (2), several MBR membrane elements (4) equidistantly installed on the membrane frame (2), several water valves (5) correspondingly provided on the top of the membrane frame (2), a hose (6) connected to the input end of the water valve (5), the end of the hose (6) away from the water valve (5) connected to the top of the MBR membrane element (4), an installation platform (7) fixedly connected to the top of the membrane frame (2), a back pipe (8) fixedly connected to the installation platform (7), a connector (9) slidably connected to the bottom of the back pipe (8), one end of the bottom of the connector (9) fixedly sleeved to the bottom of the MBR membrane element (4), and a through hole (10) through the connector (9). The output end of the water valve (5) is connected to a transmitter (24), which is used to detect the input water pressure and water volume of the water valve (5). A vertical rod (11) is rotatably connected to the inner axis of the back tube (8). A wheel (12) is fixedly connected to the bottom of the vertical rod (11). There are two wheels (12). The other wheel (12) is rotatably installed inside the membrane frame (2). A belt (13) is sleeved on the two wheels (12). Two mounting rods (14) are fixedly connected to the top of one of the wheels (12) located inside the membrane frame (2). The mounting rods (14) are symmetrically arranged. Inside the membrane frame (2), a slide rod (15) is fixedly installed on the top of the wheel (12). A spring (16) is sleeved on the slide rod (15). A push plate (17) is slidably connected to the slide rod (15). The push plate (17) abuts against the mounting rod (14). Several internal toothed rings (18) are provided on the top of the membrane frame (2). The internal toothed rings (18) are rotatably connected to the membrane frame (2). The bottom of the internal toothed rings (18) is fixedly connected to the two mounting rods (14). Several sealing parts (19) are engaged on the inner surface of the internal toothed rings (18). A drive motor (25) is fixedly installed on the installation platform (7). A lead screw (26) is rotatably connected to the output end of the drive motor (25). A sliding member (27) is threadedly connected to the lead screw (26). A spring (28) is sleeved on the side of the sliding member (27). A hanging plate (29) is slidably connected to the sliding member (27). An electric telescopic rod (30) is symmetrically installed on the end face of the installation platform (7). A connecting rod (31) is connected to the output end of the electric telescopic rod (30). The connecting rod (31) abuts against the hanging plate (29). A rack (38) is fixedly connected to the top of the hanging plate (29). A gear (39) is fixedly connected to the top of the vertical rod (11). The gear (39) and the rack (38) are movably meshed.

2. The urban sewage treatment equipment according to claim 1, characterized in that: The sealing component 1 (19) is rotatably connected to the membrane frame (2). The sealing component 1 (19) is used to block the air vent (201) on the membrane frame (2). A push rod (20) is fixedly connected to the top of the sealing component 1 (19).

3. The urban sewage treatment equipment according to claim 1, characterized in that: A plurality of sealing members 21 are rotatably connected to one side of the bottom of the MBR membrane (4). An arc strip (22) is fixedly connected to the bottom of the sealing member 21. The surface of the arc strip (22) abuts against the top of the push rod (20). The push rod (20) is used to open the sealing member 21. A spring 23 is connected to the side of the sealing member 21. The spring 23 is connected to the MBR membrane (4).

4. The urban sewage treatment equipment according to claim 1, characterized in that: A second drive motor (32) is fixedly installed on the other side of the installation platform (7). A second lead screw (33) is rotatably connected to the output end of the second drive motor (32). A lifting plate (34) is threadedly connected to the second lead screw (33). The lifting plate (34) is slidably connected to the base (1).

5. The urban sewage treatment equipment according to claim 4, characterized in that: A number of sliders (35) are slidably connected on the lifting plate (34). A spring (36) is sleeved on the side of the slider (35). A protrusion (37) is fixedly connected to the top of the slider (35). The protrusion (37) is movably inserted into the through hole (10).

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