MBR membrane sewage treatment device with quick maintenance

Abstract

This utility model relates to the field of wastewater treatment technology, specifically to a quick-release and maintainable MBR membrane wastewater treatment device, comprising: a shell, the inner cavity of which includes a filter chamber, a feeding chamber, and a treatment chamber connected in sequence; an MBR membrane frame, placed inside the treatment chamber, having multiple mounting slots spaced apart on it, and having a latch on each of its two side walls corresponding to the lower part of each mounting slot; an MBR membrane frame, disposed within the MBR membrane frame through the mounting slots, comprising: a handle frame, located at the top center of the MBR membrane frame, with vertical grooves on both sides of its support legs; a sliding member, its middle part elastically connected to the handle frame, its two side arms extending laterally outward through the vertical grooves, bending downward at the outer wall of the MBR membrane frame, the downward ends forming inwardly buckled protrusions positioned below the latches; and an elastic buckle located on the side of the MBR membrane frame, engaging with the latches of the MBR membrane frame. This application aims to provide an MBR membrane wastewater treatment device capable of selectively extracting and quickly disassembling and maintaining MBR membrane modules.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a quick-release and maintainable MBR membrane wastewater treatment device. Background Technology

[0002] MBR (Membrane Bioreactor) technology combines membrane separation with biological treatment to overcome the difficulties in sludge-water separation and unstable effluent quality inherent in traditional activated sludge processes. The development and application of small-scale MBR wastewater treatment units are particularly important for decentralized, small-scale wastewater generation sites, such as rural domestic sewage, small-scale industrial wastewater, or rainwater runoff in specific areas. These small units, with their small footprint, high treatment efficiency, excellent effluent quality, and ease of integration and maintenance, have significant social and environmental implications for improving the living environment and protecting water resources.

[0003] Application number CN202021769028.9 discloses an MBR membrane biological treatment filtration device for wastewater treatment, including a membrane frame body. A base plate is provided at the bottom of the membrane frame body, and support rods are fixedly connected to both sides of the bottom of the membrane frame body. The bottom of the support rods is fixedly connected to the base plate, and adjusting plates are fixedly connected to both sides of the top of the base plate. This application solves the problems of inconvenient installation of the MBR membrane and inconvenient movement of the membrane frame in existing MBR membrane biological treatment filtration devices for wastewater treatment, and has the advantages of easy installation and easy movement of the membrane frame.

[0004] However, existing MBR membrane wastewater treatment devices typically use a fixed frame structure to support and position a certain number of MBR membrane modules. When offline cleaning or replacement of membrane modules is required, the entire membrane module frame often needs to be lifted out of the treatment device as a whole. This operation is time-consuming and labor-intensive, and it also limits the selective extraction of individual or partial MBR membrane modules. This non-selective maintenance method is inefficient and inconvenient when faced with severe local membrane module fouling or situations requiring individual treatment. Utility Model Content

[0005] To address the shortcomings of the existing technology, the purpose of this utility model is to provide an MBR membrane wastewater treatment device that enables selective extraction and maintenance of MBR membrane modules, thereby improving maintenance efficiency and convenience.

[0006] A quick-release and maintainable MBR membrane wastewater treatment device includes: an outer shell, the inner cavity of which includes a filter chamber, a feeding chamber, and a treatment chamber connected in sequence; an MBR membrane frame placed in the treatment chamber, having multiple mounting slots spaced apart on it, and each of its two side walls having a latch below each mounting slot; and an MBR membrane frame placed inside the MBR membrane frame through the mounting slots, comprising: a handle frame located at the top center of the MBR membrane frame, with vertical slots on both sides of the handle frame; a sliding member, the middle of which is elastically connected to the handle frame, with its two side arms extending laterally outward through the vertical slots, bending downward at the outer wall of the MBR membrane frame, the downward ends forming inwardly buckled protrusions located below the latches; and an elastic buckle located on the side of the MBR membrane frame, engaging with the latches of the MBR membrane frame.

[0007] As a preferred technical solution of this utility model, a filter plate is provided in the filter chamber, the filter plate includes a coarse filter plate and a fine filter plate below it, and the coarse filter plate is inclined.

[0008] As a preferred technical solution of this utility model, a guide platform is provided at the bottom of the filter chamber. The end face of the guide platform is a guide surface. The guide surface is inclined towards the material placement chamber and has an upwardly convex arc-shaped seat at the end of the guide surface.

[0009] As a preferred technical solution of this utility model, a barrier mechanism is provided between the filter chamber and the material placement chamber in the inner cavity of the outer shell. The barrier mechanism includes: a barrier frame, fixed to the side wall of the inner cavity, and a lifting plate is slidably provided therein; an electric push rod, placed on the top of the outer shell, and its output end is fixed to the lifting plate; and an inner groove adapted to the arc-shaped seat is provided at the end of the lifting plate away from the electric push rod.

[0010] As a preferred technical solution of this utility model, a material box is provided in the material placement cavity. The material box is hollow inside, and pipes connecting to the material placement cavity are respectively provided at the four corners of the bottom.

[0011] As a preferred technical solution of this utility model, a partition plate is provided between the material placement chamber and the processing chamber, and a first fixing block is provided on the inner wall of the partition plate near the processing chamber; in the processing chamber, a second fixing block is provided on the inner wall of the outer shell, and the upper top surfaces of the first fixing block and the second fixing block are located on the same horizontal line.

[0012] As a preferred technical solution of this utility model, the MBR membrane frame has edges extending outward on both sides, and the edges on both sides respectively abut against the first fixing block and the second fixing block.

[0013] As a preferred technical solution of this utility model, lifting beams are respectively provided on the upper top surface of the two sides, and each lifting beam is hinged by a mounting seat.

[0014] As a preferred technical solution of this utility model, a sliding mechanism is provided at the connection between the support arm of the sliding member and the outer side of the support leg of the handle frame. The sliding mechanism includes: a sliding groove, which is provided on the outer side of the support leg and two are symmetrically arranged on both sides of the vertical groove; a connecting seat, which is provided on the support arm corresponding to the sliding groove; and a pulley, which is rotatably connected to the connecting seat and is placed in the sliding groove to slide up and down.

[0015] As a preferred technical solution of this utility model, the MBR membrane frame is fixedly provided with an outlet port communicating with the MBR membrane; symmetrical clearance holes are provided on both sides of each sliding member, the clearance holes vertically penetrating the support arm, for the outlet port to pass through when the sliding member moves; the outer wall of the outer shell is provided with a water collection pipe fixed by a bracket, the water collection pipe is provided with a water collection port, and several water collection ports are arranged in an array corresponding to the mounting slots, and each water collection port is connected to each corresponding outlet port through a detachable connection of a product water hose.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This application, by setting an elastic buckle for the MBR membrane frame that cooperates with the MBR membrane frame bayonet, and supplementing it with a handle, sliding parts and sliding mechanism, enables the operator to gradually squeeze and unlock the elastic buckle by the inner protrusion of the sliding parts when the handle is lifted upwards. This allows for convenient offline cleaning and replacement of individual MBR membrane modules without disturbing or hoisting other components as a whole, significantly simplifying the MBR membrane maintenance process, greatly improving maintenance efficiency, and enabling selective maintenance of local or individual membrane modules, thereby effectively reducing operating costs and operational intensity.

[0017] 2. The MBR membrane wastewater treatment device provided in this application achieves efficient physical pre-filtration through the filter plates in the filtration chamber, effectively removing large particulate suspended solids, protecting the subsequent membrane modules and extending their service life; the setting of the feeding chamber realizes the pre-treatment of chemical dosing and aeration, significantly optimizing the wastewater treatment effect and biological reaction efficiency. Combined with the efficient biodegradation and membrane filtration capabilities of the MBR membrane itself, it ensures excellent effluent quality.

[0018] The specific technical solution and beneficial effects of this utility model will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the processing device of this application; Figure 2 This is a top view of the processing apparatus of this application; Figure 3 for Figure 2 Cross-sectional view at point AA; Figure 4 This is a schematic diagram of the overall installation structure of the MBR membrane frame and MBR membrane sheet frame in this application; Figure 5 This is a schematic diagram of the MBR membrane frame and a single MBR membrane frame installation structure of this application; Figure 6 for Figure 5 Enlarged view of point B in the middle; Figure 7 for Figure 5 Enlarged view of point C in the middle; In the diagram: 1. Outer shell; 2. Filter chamber; 3. Feeding chamber; 4. Processing chamber; 5. MBR membrane holder; 6. Mounting groove; 7. Bayonet; 8. MBR membrane frame; 9. Handle; 901. Support leg; 902. Vertical groove; 10. Sliding component; 1001. Support arm; 1002. Protrusion; 11. Elastic buckle; 12. Coarse filter plate; 13. Fine filter plate; 14. Guide platform; 15. Arc-shaped seat; 16. Barrier frame; 17. 18. Electric actuator; 29. ​​Lifting plate; 20. Material box; 21. Divider plate; 22. First fixing block; 23. Second fixing block; 24. Edge; 25. Lifting beam frame; 26. Mounting base; 27. Slide groove; 28. Connecting seat; 29. ​​Pulley; 30. Spring; 31. Clearance hole; 32. MBR membrane; 33. Water outlet port; 34. Water collection pipe; 35. Water collection port; 36. Product water hose; 37. Aeration device. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] This utility model relates to a quick-release and maintainable MBR membrane wastewater treatment device. Please refer to [link / reference]. Figures 1 to 7 As shown, the structure of this application is designed to improve the efficiency and ease of operation of offline cleaning and maintenance of membrane modules while treating wastewater.

[0023] The processing device adopts an integrated outer shell 1, whose internal cavity is divided into three sequentially connected functional areas: a filtration chamber 2, a material placement chamber 3, and a processing chamber 4. An MBR membrane frame 5 is located inside the processing chamber 4 at the very end. Multiple mounting slots 6 are spaced apart on the top of the MBR membrane frame 5, and a latch 7 is located on each of the two side walls of the MBR membrane frame 5 below each mounting slot 6. Multiple MBR membrane frames 8 are installed inside the MBR membrane frame 5 through their respective mounting slots 6. Each membrane frame has a separate handle 9 at the center of its top, with two side supports 901. Each part has a vertically penetrating groove 902. A sliding member 10 is elastically connected to the middle of the handle frame 9 by a spring 29. The sliding member 10 is generally flat and arched. Specifically, the support arms 1001 on both sides of the sliding member 10 pass through the vertical groove 902 of the handle frame 9. After passing through the vertical groove 902, the support arms 1001 extend horizontally outward. When they reach the outer wall of the MBR membrane frame 5, the support arms 1001 bend downward, and their downward ends form an inwardly buckled protrusion 1002. The protrusion 1002 is placed below the bayonet 7 of the MBR membrane frame 5.

[0024] Meanwhile, an elastic buckle 11 is provided on the side of the MBR membrane frame 8. The buckle is used to engage with the slot 7 of the MBR membrane frame 5, thereby firmly fixing the MBR membrane frame 8 to the MBR membrane frame 5. To ensure that the sliding member 10 moves on the support leg 901 of the handle frame 9, a sliding mechanism is provided at the connection between the support arm 1001 of the sliding member 10 and the outer side of the support leg 901 of the handle frame 9. The sliding mechanism includes a sliding groove 26 provided on the outer side of the support leg 901 of the handle frame 9, and a connecting seat 27 provided on the support arm 1001 of the sliding member 10 corresponding to the sliding groove 26. The pulley is rotatably connected to the connecting seat 27 and placed in the sliding groove 26, so that the sliding member 10 can slide up and down freely.

[0025] In the filtration chamber 2, a filter plate is provided for preliminary solid-liquid separation. This filter plate consists of a coarse filter plate 12 inclined at the top and a fine filter plate 13 flat at the bottom, which together pre-filter the incoming wastewater. A guide platform 14 is also provided at the bottom of the filtration chamber 2, with its end face forming a guide surface. This guide surface is inclined towards the material placement chamber 3, and a convex arc-shaped seat 15 is provided at the end of the guide surface to further guide the water flow. In the inner cavity of the outer shell 1, a blocking mechanism is provided between the filtration chamber 2 and the material placement chamber 3 to control the flow between the two chambers. This blocking mechanism includes a blocking frame 16 fixed to the inner cavity sidewall, with a lifting plate 18 slidably mounted inside; an electric actuator 17 located at the top of the outer shell 1, with its output end fixed to the lifting plate 18, driving the lifting plate 18 to move up and down; and an inner groove at the end of the lifting plate 18 away from the electric actuator 17 that precisely matches the arc-shaped seat 15, ensuring a tight fit during blocking or opening.

[0026] Adjacent to the filter chamber 2, the material placement chamber 3 contains a material storage box 19, which is hollow inside and has pipes connecting to the material placement chamber 3 at its four bottom corners. Aeration devices 36 are evenly arranged at the bottom of the material placement chamber 3. The material storage box 19 is used to hold and add the chemicals required for the treatment process to assist wastewater treatment or optimize biological reactions. The aeration devices 36 continuously blow air into the material placement chamber 3, generating dense bubbles and providing sufficient power to ensure that the chemicals added from the material storage box 19 are fully and evenly mixed with the wastewater. Simultaneously, it provides dissolved oxygen to the microorganisms in the wastewater, creating favorable starting conditions for the core biodegradation reaction in the subsequent treatment chamber 4. This combination of chemical addition and immediate aeration effectively improves the efficiency and homogenization effect of the material placement chamber 3 in wastewater pretreatment. Between the material placement chamber 3 and the processing chamber 4, a partition plate 20 is provided. To stably support the MBR membrane frame 5, a first fixing block 21 is provided on the inner wall of the partition plate 20 near the processing chamber 4. In the processing chamber 4, a second fixing block 22 is provided on the inner wall of the outer shell 1. The top surfaces of the first fixing block 21 and the second fixing block 22 are on the same horizontal line. The two sides of the MBR membrane frame 5 extend outward with edges 23. These edges 23 abut against the first fixing block 21 and the second fixing block 22 respectively, providing load-bearing and positioning for the MBR membrane frame 5. In addition, on the top surface of the two side edges 23 of the MBR membrane frame 5, lifting beams 24 are provided respectively. Each lifting beam 24 is hinged through a mounting base 25, providing an adaptable structure for the hoisting of the entire MBR membrane frame 5.

[0027] Preferably, an aeration structure is fixedly installed at the bottom of the treatment chamber 4 to generate bubbles to scrub the surface of the MBR membrane and provide dissolved oxygen required by microorganisms; in addition, to further ensure the long-term stable operation of the membrane.

[0028] Furthermore, the MBR membrane frame 8 is fixedly provided with an outlet port 32 that connects to the MBR membrane 31. Preferably, the MBR membrane 31 is connected through a flow path within the frame of the MBR membrane frame 31, and the outlet port 32 is a tubular connector that connects to the MBR membrane 31, ensuring that the clean water filtered by the MBR membrane 31 can be discharged from it. In order to facilitate the installation and removal of the MBR membrane frame 8 and avoid interference with the sliding member 10, symmetrical clearance holes 30 are provided on both sides of the support arm 1001 of each sliding member 10. These clearance holes 30 are vertically penetrating the support arm 1001, and their diameter is larger than the maximum outer diameter of the outlet port 32, so that the sliding member 10 can move up and down. That is, when the latch 7 is released or the MBR membrane frame 8 is locked, the outlet port 32 fixed on the MBR membrane frame 8 can pass smoothly and unobstructed through these clearance holes 30.

[0029] The outer wall of the outer casing 1 is provided with a water collection pipe 33 fixed by a bracket. The water collection pipe 33 is arranged along the outside of the outer casing 1 and is responsible for collecting the permeate water discharged from all the MBR membrane frames 8. The water collection pipe 33 is provided with a number of water collection ports 34 in an array corresponding to the position of each mounting slot 6. Each water collection port 34 is detachably connected to the outlet port 32 of the corresponding MBR membrane frame 8 through a permeate hose 35. The detachable connection includes plug-in connection, threaded connection or clamp connection used in the prior art. At the same time, the device is also integrated with a backflow cleaning system, which can use the outlet port 32 on the MBR membrane frame 8 to achieve membrane backwashing or chemical cleaning by circulating permeate water or cleaning liquid to remove membrane fouling and extend the membrane service life.

[0030] To address the problems of existing MBR membrane wastewater treatment devices requiring overall hoisting, time-consuming and labor-intensive maintenance, and the inability to selectively remove individual membrane modules, this application's structure achieves convenient offline cleaning or replacement of individual MBR membrane modules without disturbing other components: When offline cleaning or replacement of a single MBR membrane module is required, after disconnecting the outlet port 32 connected to the upper part of the corresponding membrane frame 8, the operator only needs to hold the handle 9 at the top of the MBR membrane frame 8 and lift it upwards. At this time, due to the elastic connection between the handle 9 and the sliding member 10, and the sliding... The moving part 10, arm 1001, passes through the vertical slot 902 of the handle frame 9 and is guided by the sliding mechanism to slide smoothly upward. The inwardly buckling protrusion 1002 formed at the downward end of the sliding part 10 moves upward accordingly. When the protrusion 1002 rises to abut against the elastic buckle 11, the protrusion 1002 gradually presses inward against the elastic buckle 11 on the side of the MBR membrane frame 8, causing it to disengage from the latch 7 of the MBR membrane frame 5. Once the elastic buckle 11 is unlocked, the MBR membrane frame 8 can be removed separately from the MBR membrane frame 5 for cleaning, inspection, or replacement without disturbing or hoisting other MBR membrane modules as a whole. This significantly simplifies the MBR membrane maintenance process, improves maintenance efficiency, and enables selective maintenance of local or individual membrane modules, thereby significantly reducing operating costs and operational intensity.

[0031] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A quick-release and maintainable MBR membrane wastewater treatment device, characterized in that, The processing device includes: The outer shell (1) has an inner cavity comprising a filter cavity (2), a material feeding cavity (3), and a processing cavity (4) connected in sequence; MBR membrane frame (5) is placed in the processing chamber (4), and multiple mounting slots (6) are provided on it at intervals. Each mounting slot (6) is provided with a bayonet (7) on the side walls of the frame. The MBR membrane frame (8) is disposed within the MBR membrane holder (5) via the mounting groove (6), and includes: A handle (9) is located at the top center of the MBR membrane frame (8), and vertical grooves (902) are provided on both sides of its support legs (901); The sliding member (10) is elastically connected to the handle frame (9) in its middle part, and its two side arms (1001) extend outward laterally through the vertical groove (902) and bend downward at the outer wall of the MBR membrane frame (5). The downward end of the sliding member forms an inwardly buckled protrusion (1002), which is placed below the bayonet (7). An elastic buckle (11) is located on the side of the MBR membrane frame (8) and is snapped into the slot (7) of the MBR membrane frame (5).

2. The MBR membrane sewage treatment device of quick maintenance of claim 1, wherein, A filter plate is provided in the filter chamber (2), the filter plate includes a coarse filter plate (12) and a fine filter plate (13) below it, and the coarse filter plate (12) is inclined.

3. The MBR membrane sewage treatment device of quick maintenance of claim 2, wherein, A guide platform (14) is provided at the bottom of the filter chamber (2). The end face of the guide platform (14) is a guide surface. The guide surface is inclined toward the material placement chamber (3), and an upwardly convex arc-shaped seat (15) is provided at the end of the guide surface.

4. The MBR membrane sewage treatment device of quick maintenance of claim 3, wherein, In the inner cavity of the outer shell (1), a barrier mechanism is provided between the filter chamber (2) and the material placement chamber (3), the barrier mechanism comprising: A barrier frame (16) is fixed to the inner cavity side wall, and a lifting plate (18) is slidably provided inside it; An electric actuator (17) is placed on top of the housing (1), and its output end is fixed to the lifting plate (18); The lifting plate (18) has an inner groove at the end away from the electric push rod (17) that is adapted to the arc-shaped seat (15).

5. The MBR membrane sewage treatment device of quick maintenance of claim 1, wherein, A material storage box (19) is provided in the material storage chamber (3). The material storage box (19) is hollow inside, and pipes connecting to the material storage chamber (3) are provided at the four corners of the bottom. An aeration device (36) is provided at the bottom of the material storage chamber.

6. The MBR membrane sewage treatment device of quick maintenance of claim 1, wherein, A partition plate (20) is provided between the material placement chamber (3) and the processing chamber (4). A first fixing block (21) is provided on the inner wall of the partition plate (20) near the processing chamber (4). In the processing chamber (4), a second fixing block (22) is provided on the inner wall of the outer shell (1). The top surfaces of the first fixing block (21) and the second fixing block (22) are located on the same horizontal line.

7. The MBR membrane sewage treatment device of quick maintenance of claim 6, wherein, The MBR membrane frame (5) has edges (23) extending outward on both sides, and the edges (23) on both sides abut against the first fixing block (21) and the second fixing block (22) respectively.

8. The MBR membrane sewage treatment device of quick maintenance of claim 7, wherein, A lifting beam frame (24) is provided on the upper surface of the two sides of the edge (23), and each lifting beam frame (24) is hinged by a mounting seat (25).

9. The MBR membrane sewage treatment device of quick maintenance of claim 1, wherein, A sliding mechanism is provided at the connection point between the support arm (1001) of the slider (10) and the outer side of the support leg (901) of the handle frame (9), the sliding mechanism comprising: The slide groove (26) is provided on the outside of the support leg (901), and two are symmetrically provided on both sides of the vertical groove (902); A connecting seat (27) is provided on the support arm (1001) at a position corresponding to the slide groove (26); The pulley is rotatably connected to the connecting seat (27) and slides up and down in the groove (26).

10. The MBR membrane sewage treatment device of quick maintenance of claim 1, wherein, The MBR membrane frame (8) is fixedly provided with an outlet port (32) that connects to the MBR membrane (31); on each of the two sides of the sliding member (10), there are symmetrical clearance holes (30), which vertically penetrate the support arm (1001) and are used for the outlet port (32) to pass through when the sliding member (10) moves; the outer wall of the outer shell (1) is provided with a water collection pipe (33) fixed by a bracket, and the water collection pipe (33) is provided with a water collection port (34). The water collection port (34) is arranged in a corresponding array with the mounting groove (6). Each water collection port (34) and each corresponding outlet port (32) are connected by a detachable connection of a product water hose (35).

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