MABR (Membrane Aerated Baffled Reactor) membrane aeration bio-membrane reactor for advanced sewage treatment

Abstract

The invention discloses an MABR membrane aeration bio-membrane reactor for advanced sewage treatment, and belongs to the technical field of sewage treatment.The height of a movable seat is adjusted through an adjusting assembly, a fixed ring drives a flexible ring and a scraper to rotate through a plurality of elastic columns and scrapes and brushes mud and impurities attached to the outer portion of an MABR membrane, and the fixed ring is fixed to the movable seat through a fixed ring; the elastic columns and the flexible rings can deform under the action of external force, the scrapers are in flexible contact with the outer portion of the MABR membrane, the scrapers are prevented from damaging the MABR membrane, meanwhile, biological membrane fragments or hard scale layers tightly attached to the MABR membrane can be removed, and due to the fact that the multiple scrapers are located between the two suction pipes, the suction efficiency of the MABR membrane is improved. According to the MABR membrane cleaning device, the adsorption holes are formed in the reactor, so that the cleaned and fallen mud and impurities can be effectively extracted by the adsorption holes, the mud and the impurities are prevented from drifting around to cause secondary pollution to the MABR membrane, a traditional single flushing mode or a chemical cleaning mode for cleaning the reactor is abandoned, the cleaning effect is improved while the MABR membrane is not damaged, and the service life of the MABR membrane is prolonged. Further, the service life of the MABR membrane is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, in particular to a MABR membrane aeration biofilm reactor for advanced sewage treatment. Background Art

[0002] With the acceleration of global industrialization and urbanization, sewage discharge continues to grow, and water pollution problems are becoming increasingly serious. At the same time, people's requirements for water environment quality are constantly increasing. Traditional sewage treatment processes, such as activated sludge method and oxidation ditch, can no longer meet the needs of deep sewage treatment.

[0003] Membrane aerated biofilm reactor (MABR) is a highly efficient biofilm technology used for advanced wastewater treatment. It uses MABR membrane aeration to treat wastewater. By combining the advantages of gas separation membranes and biofilm processes, it achieves simultaneous nitrification and denitrification, low-energy aeration, and efficient pollutant removal. The MABR membrane aeration function directly supplies oxygen to the biofilm through a breathable membrane such as a hollow fiber membrane. Oxygen does not need to be transferred through the water body, and the utilization rate can reach over 80%, significantly reducing aeration energy consumption. During the long-term operation of the biofilm reactor, the efficiency of membrane surface cleaning and sludge collection directly determines the stability and economy of the system. The membrane surface is the core area of ​​biofilm attachment and metabolism, and excessive biofilm growth and adsorption of pollutants will significantly reduce the efficiency of oxygen transfer. The aging and shedding of biofilm and suspended particles will form sludge, some of which will settle and the other part will accumulate in the membrane area. Currently, hydraulic flushing is used to clean the MABR membrane surface, but it has limited effect on tightly attached biofilm fragments or hard scale layers, and impurities will still remain in the reactor or treatment tank. If chemical cleaning is used, it will cause chemical residues and increase the risk of effluent toxicity. Summary of the Invention

[0004] The purpose of the present invention is to provide an MABR membrane aeration biofilm reactor for deep sewage treatment, so as to solve the problem proposed in the above background technology that the surface of the MABR membrane is cleaned by hydraulic flushing, but the effect on tightly attached biofilm fragments or hard scale layers is limited, and impurities will still remain in the reactor or treatment tank. If chemical cleaning is used, chemical agent residues will be caused, increasing the risk of effluent toxicity.

[0005] To achieve the above object, the present invention provides the following technical solutions: The top of the four uprights are fixed with a top plate, and two groups of jacks are provided in the top plate, and the number of jacks in each group is four. The two sides of the inner wall of the jack are provided with a slot, and a mounting seat is inserted through the jack, and a MABR membrane is fixed through the middle of the mounting seat, and the top of the MABR membrane passes through the mounting seat and is connected to a one-way air valve. A movable seat is provided below the outer wall of the MABR membrane, and a limiting assembly is fixed on the side of the movable seat close to the MABR membrane. Suction assemblies are respectively fixed on the top and bottom of the limiting assembly, and the suction assembly is sleeved on the outside of the MABR membrane. The two suction assemblies are connected to the outside of the two suction assemblies. The top of the connecting pipe passes through the top plate and extends to the top. A cleaning assembly is slidably connected to the inside of the limiting assembly, and the cleaning assembly is located between the two suction assemblies. The cleaning component is sleeved on the outside of the MABR membrane, and the cleaning component is connected to the outside of the cleaning component, and the bevel gear one is externally meshed with the bevel gear two. A T-shaped through hole is provided inside the movable seat, and the bevel gear one and the bevel gear two are rotatably connected in the T-shaped through hole through a shaft sleeve, and the bevel gear two is externally meshed with a gear rod, and the gear rod slides through the through hole, and the top end of the gear rod is fixed to the bottom of the top plate, and the bottom end of the gear rod is fixed to the top of the reactor base. Several movable seats on the front and rear sides are fixedly connected with the same adjustment component, the top end of the adjustment component is fixed through the top plate, and the bottom end of the adjustment component is installed on the reactor base. Grooves are respectively provided on both sides of the interior of the mounting seat, and a locking component is slid through the groove. The part of the locking component that passes through the groove is clamped in the slot, and a limiting groove is provided on one side of the inner wall of the groove, and the part of the locking component located in the groove slides in the limiting groove.

[0006] As a further solution of the present invention, the limiting assembly includes two pressure plates, which are semi-circular in design. A track is provided between the two pressure plates, and a plurality of balls are provided in the track. The cleaning assembly is located between the two pressure plates and in contact with the balls. The outer walls of the two pressure plates are fixed to the movable seat.

[0007] As a further solution of the present invention, the suction assembly includes a suction pipe, which is annular in design and is sleeved on the outside of the MABR membrane. The suction pipe is fixed on the pressure plate. The outsides of the two suction pipes are connected to a connecting pipe, and the inner walls of the suction pipes are connected to a number of adsorption holes at equal intervals.

[0008] As a further solution of the present invention, the cleaning assembly includes a fixed ring, a plurality of elastic columns are fixed on the inner wall of the fixed ring, a flexible ring is fixed between the plurality of elastic columns, the flexible ring is sleeved on the outside of the MABR membrane and a plurality of scrapers are provided on the inner wall, and the plurality of scrapers are in contact with the MABR membrane.

[0009] As a further solution of the present invention, slideways are respectively provided on the top and bottom of the fixing ring, the fixing ring is slidably connected between the two pressure plates and the slideways are in contact with a plurality of ball bearings, and a plurality of tooth grooves are provided on the outer wall of the fixing ring, and the tooth grooves are meshed with a bevel gear.

[0010] As a further solution of the present invention, the adjustment assembly includes a motor, which is fixed on the top plate, and a screw is fixed on the output shaft of the motor. The top end of the screw is rotatably connected to the top plate through a shaft sleeve, and the bottom end of the screw is rotatably connected to the reactor base through a shaft sleeve. The screw is externally threaded with a cross bar, one side of the cross bar is fixed to the four movable seats on the same side, and sliding rods are slid through both ends of the cross bar, and the sliding rods are fixedly connected between the top plate and the reactor base.

[0011] As a further solution of the present invention, the locking assembly includes a card block, which slides through the groove, and the top and bottom sides of the card block are respectively flat and inclined. The card block is connected to the slot, and a handle is fixed on the card block. The handle slides through the groove, and a spring and a baffle are fixed on the side of the handle away from the card block. The other end of the spring is fixed to one side of the inner wall of the groove, and the baffle slides in the limit groove.

[0012] As a further solution of the present invention, a dirt collecting box is fixed on the top of the reactor base, the bottom of the inner wall of the dirt collecting box is inclined, and the bottom of the dirt collecting box is connected to a mud suction pipe, the other end of the mud suction pipe passes through the reactor base and the top plate and extends upwards.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention adjusts the height of the movable seat by adjusting the assembly, and the annular suction pipe can extract the mud and impurities attached to the outside of the MABR membrane through the adsorption holes. At the same time, the movable seat can slide on the outside of the gear rod when it moves upward, and the gear rod is meshed with the bevel gear 2, so that the bevel gear 2 inside the movable seat can rotate and synchronously drive the bevel gear 1 to rotate. The bevel gear 1 drives the fixed ring in the cleaning assembly to rotate through the tooth groove. The fixed ring is located between the two pressure plates, and the slideways on the upper and lower sides are in contact with the balls between the two pressure plates, so that the fixed ring will not separate from the two pressure plates during the rotation, thereby improving the stability of the fixed ring rotation. At the same time, the fixed ring drives the flexible ring and the scraper to rotate through multiple elastic columns. Several scrapers are equidistantly arranged on the outside of the MABR membrane, so that multiple scrapers can rotate during the rotation. During the process, the mud and impurities attached to the outside of the MABR membrane are scraped and brushed to facilitate the separation of the mud and impurities from the MABR membrane. The elastic column and the flexible ring will be deformed under the action of external force and flexibly contact the outside of the MABR membrane through the scraper to prevent the scraper from damaging the MABR membrane. At the same time, the biofilm fragments or hard scale layers tightly attached to the MABR membrane can be removed. Since multiple scrapers are located between the two suction pipes, the mud and impurities that have been cleaned can be effectively extracted by the adsorption holes to prevent the mud and impurities from floating around and causing secondary pollution to the MABR membrane. Therefore, the traditional single flushing method or chemical cleaning method for cleaning the reactor is abandoned, and the cleaning effect is improved without damaging the MABR membrane, thereby extending the service life of the MABR membrane.

[0014] 2. The present invention drives the two blocks to move in the groove by squeezing the two handles. When the two blocks move relative to each other and disengage from the slots in the sockets, the locking state between the mounting base, the MABR membrane and the top plate can be released. Then, the two handles are lifted up so that the handles lift the MABR membrane through the mounting base until the MABR membrane is completely separated from the top plate, and then the MABR membrane can be removed, which is convenient for maintenance and replacement of the MABR membrane. When installing the MABR membrane, the MABR membrane is inserted into the socket in the top plate through the mounting base. The openings on both sides of the sockets will squeeze the bottoms of the two blocks. Since one side of the bottom of the block is designed with a slope, the two blocks will move closer to each other after being compressed and squeeze the springs on both sides until the block is completely After fully retracting into the groove, continue to press down the mounting seat so that it is completely stuck into the socket. At this time, the card block is supported by the elastic force of the spring, so that the card block is stuck in the card slot. Since the top of the card block is a flat design, after the card connection work is completed, the top of the card block fits with the top of the inner wall of the card slot, so that the card block will not move up and detach from the card slot, effectively achieving the purpose of locking the mounting seat, so as to facilitate the rapid assembly of the MABR membrane and improve the convenience of operation. Therefore, the modularly designed MABR membrane can be flexibly combined according to actual needs, significantly enhancing the adaptability to different scenarios. The modular components can be disassembled for transportation and assembled on site, and one or several modules can be individually closed for local maintenance without affecting the overall operation of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention when viewed from above; Figure 3 Schematic diagram of the structure of the reactor base and top plate of the present invention; Figure 4 This is a schematic diagram of the structure of the connection between the mounting base and the MABR membrane of the present invention; Figure 5 It is a structural schematic diagram of the locking assembly of the present invention; Figure 6 This is a schematic structural diagram of the connection between the movable seat and the gear rod of the present invention; Figure 7 It is a structural schematic diagram of the cross section of the movable seat of the present invention; Figure 8 Schematic diagram of the structure of the limit assembly of the present invention; Figure 9 This is a schematic diagram of the structure of the cleaning component of the present invention from a top view.

[0017] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Reactor base; 2. Vertical pole; 3. Top plate; 4. Socket; 5. Card slot; 6. Mounting seat; 7. MABR membrane; 8. Moving seat; 9. Limiting assembly; 901. Pressing plate; 902. Track; 903. Ball; 10. Suction assembly; 101. Suction pipe; 102. Adsorption hole; 11. Connecting pipe; 12. Cleaning assembly; 121. Fixing ring; 122. Elastic column; 123. Flexible ring; 124. Scraper; 1 25. Slideway; 126. Tooth groove; 13. Bevel gear 1; 14. Bevel gear 2; 15. Through hole; 16. Gear rod; 17. Adjustment assembly; 171. Motor; 172. Screw rod; 173. Cross bar; 174. Slide rod; 18. One-way air valve; 19. Locking assembly; 191. Block; 192. Handle; 193. Stop bar; 194. Spring; 20. Groove; 21. Limiting groove; 22. Dirt collecting box; 23. Mud suction pipe. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0019] See also Figures 1-9 , the present invention provides a technical solution: A MABR membrane aeration biofilm reactor for advanced sewage treatment includes a reactor base 1, with vertical poles 2 fixed at the four corners of the top of the reactor base 1, and a top plate 3 fixedly connected to the top ends of the four vertical poles 2. The top plate 3 is provided with two groups of jacks 4, and each group of jacks 4 has four jacks. A card slot 5 is provided on both sides of the inner wall of the jack 4, and a mounting seat 6 is inserted through the jack 4. Because there is a socket 4, the socket 4 is an inverted T-shaped design and its shape is adapted to the shape of the mounting seat 6. When the mounting seat 6 is inserted into the T-shaped socket 4, it limits the mounting seat 6 and prevents the mounting seat 6 from falling below the top plate 3.

[0020] The middle part of the mounting seat 6 is fixed with a MABR membrane 7, the top of the MABR membrane 7 is passed through the mounting seat 6 and is connected to a one-way air valve 18, a movable seat 8 is provided below the outer wall of the MABR membrane 7, and a limiting component 9 is fixed on the side of the movable seat 8 close to the MABR membrane 7. The top and bottom of the limiting component 9 are respectively fixed with a suction component 10, the suction component 10 is sleeved on the outside of the MABR membrane 7, and the two suction components 10 are connected to the outside of the connecting pipe 11, the top of the connecting pipe 11 passes through the top plate 3 and extends to the top, and the limiting component 9 is internally slidably connected to The cleaning assembly 12 is located between the two suction assemblies 10 and is sleeved on the outside of the MABR membrane 7. The outside of the cleaning assembly 12 is connected to a bevel gear 13, and the bevel gear 13 is externally meshed with a bevel gear 2 14. A T-shaped through hole 15 is provided inside the movable seat 8. The bevel gear 13 and the bevel gear 2 14 are rotatably connected in the T-shaped through hole 15 through a shaft sleeve. The bevel gear 2 14 is externally meshed with a gear rod 16, which penetrates and slides in the through hole 15, and the top of the gear rod 16 is fixed to the bottom of the top plate 3. Through the mutual cooperation between the bevel gear 2 14 and the gear rod 16, the movable seat 8 can slide outside the gear rod 16 when moving upward, and the gear rod 16 is meshed with the bevel gear 2 14, so that the bevel gear 2 14 inside the movable seat 8 will rotate and synchronously drive the bevel gear 1 13 to rotate, making it convenient for the bevel gear 13 to drive the cleaning component 12 to rotate and work; The bottom end of the gear rod 16 is fixed to the top of the reactor base 1, and the same adjustment component 17 is fixedly connected to several movable seats 8 on the front and rear sides. The top of the adjustment component 17 is fixed in the top plate 3, and the bottom end of the adjustment component 17 is installed on the reactor base 1. Grooves 20 are respectively provided on both sides of the interior of the mounting seat 6. A locking component 19 slides through the groove 20. The part of the locking component 19 that passes through the groove 20 is clamped in the card slot 5. A limiting groove 21 is provided on one side of the inner wall of the groove 20, and the part of the locking component 19 located in the groove 20 slides in the limiting groove 21.

[0021] As a further solution of the present invention, the limiting assembly 9 includes two pressure plates 901, the number of which is semi-annular, a track 902 is opened between the two pressure plates 901, and a plurality of balls 903 are arranged in the track 902. The cleaning assembly 12 is located between the two pressure plates 901 and contacts the balls 903. The outer walls of the two pressure plates 901 are fixed to the movable seat 8. During operation, the cleaning assembly 12 is located between the two pressure plates 901 and contacts the balls 903 between the two pressure plates 901 , so that the cleaning assembly 12 will not separate from the two pressure plates 901 during rotation, thereby improving the stability of the cleaning assembly 12 during rotation.

[0022] As a further embodiment of the present invention, the suction assembly 10 includes a suction pipe 101. The suction pipe 101 is annular and sleeved on the outside of the MABR membrane 7. The suction pipe 101 is fixed to the pressure plate 901. The outsides of the two suction pipes 101 are connected to a connecting pipe 11. The inner wall of the suction pipe 101 is connected to a plurality of adsorption holes 102 at equal intervals. During operation, the top end of the external connecting pipe 11 of the suction assembly 10 is connected to the external sludge extraction equipment, so that the annular suction pipe 101 can extract the sludge and impurities attached to the outside of the MABR membrane 7 through the adsorption holes 102.

[0023] As a further embodiment of the present invention, the cleaning assembly 12 includes a fixed ring 121, a plurality of elastic columns 122 are fixed to the inner wall of the fixed ring 121, a flexible ring 123 is fixed between the plurality of elastic columns 122, the flexible ring 123 is sleeved on the outside of the MABR membrane 7 and a plurality of scrapers 124 are provided on the inner wall of the flexible ring 123, and the plurality of scrapers 124 are in contact with the MABR membrane 7. Since the plurality of scrapers 124 are located between the two suction pipes 101, the mud and impurities that fall off can be effectively extracted by the adsorption holes 102, thereby preventing the mud and impurities from floating around and causing secondary pollution to the MABR membrane 7. During operation, the fixed ring 121 drives the flexible ring 123 and the scraper 124 to rotate through the multiple elastic columns 122. The scrapers 124 are evenly spaced outside the MABR membrane 7, so that the multiple scrapers 124 can scrape the mud and impurities attached to the outside of the MABR membrane 7 during the rotation process, making it easier for the mud and impurities to be separated from the MABR membrane 7. The elastic column 122 and the flexible ring 123 will deform under the action of external force and flexibly contact the outside of the MABR membrane 7 through the scraper 124, preventing the scraper 124 from damaging the MABR membrane 7, while being able to remove biofilm fragments or hard scale layers tightly attached to the MABR membrane 7.

[0024] As a further embodiment of the present invention, slideways 125 are respectively provided at the top and bottom of the fixing ring 121. The fixing ring 121 is slidably connected between the two pressure plates 901, and the slideways 125 are in contact with the plurality of balls 903. The outer wall of the fixing ring 121 is provided with a plurality of tooth grooves 126, which are meshed with the bevel gear 13. During operation, the bevel gear 13 drives the fixed ring 121 in the cleaning component 12 to rotate through the tooth groove 126. The fixed ring 121 is located between the two pressure plates 901 and the slideways 125 on the upper and lower sides are in contact with the balls 903 between the two pressure plates 901, so that the fixed ring 121 will not separate from the two pressure plates 901 during the rotation process, thereby improving the stability of the rotation cleaning work of the scraper 124 inside the fixed ring 121.

[0025] As a further solution of the present invention, the adjustment assembly 17 includes a motor 171, which is fixed to the top plate 3. A screw rod 172 is fixed to the output shaft of the motor 171. The top end of the screw rod 172 is rotatably connected to the top plate 3 through a shaft sleeve, and the bottom end of the screw rod 172 is rotatably connected to the reactor base 1 through a shaft sleeve. The screw rod 172 is externally threaded with a cross bar 173, one side of the cross bar 173 is fixed to the four movable seats 8 on the same side, and slide rods 174 are slidably passed through both ends of the cross bar 173, and the slide rod 174 is fixedly connected between the top plate 3 and the reactor base 1; During operation, the motor 171 will drive the screw rod 172 to rotate, and the screw rod 172 will drive the cross bar 173 to move upward during the rotation, so that the cross bar 173 drives multiple movable seats 8 on the same side to move upward. The two sliding rods 174 are used to limit the two ends of the cross bar 173, thereby improving the stability of the vertical movement of multiple movable seats 8 driven by the cross bar 173.

[0026] As a further embodiment of the present invention, the locking assembly 19 includes a card block 191, which slides through the groove 20, and the top and bottom sides of the card block 191 are respectively flat and inclined. The card block 191 is engaged with the card slot 5. A handle 192 is fixed to the card block 191, and the handle 192 slides through the groove 20. During operation, by squeezing the two handles 192, the two handles 192 respectively drive the two clamping blocks 191 to move in the groove 20. When the two clamping blocks 191 move relative to each other and disengage from the clamping slot 5 in the insertion hole 4, the locking state between the mounting seat 6, the MABR membrane 7 and the top plate 3 can be released. Then, the two handles 192 are lifted up, so that the handles 192 lift the MABR membrane 7 through the mounting seat 6 until the MABR membrane 7 is completely separated from the top plate 3. Then, the MABR membrane 7 can be removed, which is convenient for maintenance and replacement of the MABR membrane 7. A spring 194 and a stop bar 193 are fixed to the side of the handle 192 away from the block 191. The other end of the spring 194 is fixed to one side of the inner wall of the groove 20. The stop bar 193 slides in the limiting groove 21. The limiting groove 21 limits the stop bar 193, thereby improving the stability of the horizontal movement of the handle 192 and the block 191. During operation, since one side of the bottom of the card block 191 is designed with a slope, the two card blocks 191 will move closer to each other after being compressed and squeeze the springs 194 on both sides until the card block 191 is completely retracted into the groove 20, and the mounting seat 6 is continued to be pressed down to make it completely inserted into the inside of the socket 4. At this time, the card block 191 is supported by the elastic force of the spring 194, so that the card block 191 is inserted into the card slot 5. Since the top of the card block 191 is designed to be flat, after the card connection work is completed, the top of the card block 191 is in contact with the top of the inner wall of the card slot 5, so that the card block 191 will not move up and detach from the card slot 5, thereby improving the stability of the installation and locking of the mounting seat 6.

[0027] As a further solution of the present invention, a dirt collecting box 22 is fixed on the top of the reactor base 1. The bottom of the inner wall of the dirt collecting box 22 is inclined, and the bottom of the dirt collecting box 22 is connected to a mud extraction pipe 23. The other end of the mud extraction pipe 23 passes through the reactor base 1 and the top plate 3 and extends upwards. During operation, part of the sediment produced by the aeration reaction falls into the sewage collecting box 22 on the reactor base 1 for collection, preventing the sewage from being scattered around and inconvenient for subsequent centralized treatment. In addition, the bottom of the inner wall of the sewage collecting box 22 is designed to guide the sediment, making it convenient for the mud suction pipe 23 to be connected to the external mud suction pump to clean the inside of the sewage collecting box 22.

[0028] Working principle of the present invention: When sewage is deeply treated, the reactor is submerged in the sewage treatment pool, and the top plate 3 and the top of the two regulating components 17 are located above the water surface. Secondly, the one-way valve 18 on the top of the MABR membrane 7 is connected to the air supply equipment, and high-oxygen air enters the MABR membrane 7 through the one-way valve 18. The setting of the one-way valve 18 can prevent the backflow of gas and liquid in the MABR membrane 7. When air passes through the membrane cavity in the MABR membrane 7, the gas diffused outward from the membrane cavity constantly clears the membrane pores, so that the influence of membrane fouling on the membrane group is minimized. The high specific surface area of ​​the membrane filaments for microbial attachment and growth can effectively retain the characteristic microorganisms required for wastewater biological treatment, achieving the purpose of low-energy aeration and efficient pollutant removal. The sediment produced by some aeration reactions falls into the sewage collecting box 22 on the reactor base 1 for collection. The membrane surface is the core area of ​​biofilm attachment and metabolism, and excessive growth of biofilm and adsorption of pollutants will significantly reduce the oxygen transfer efficiency in the MABR membrane 7, so the MABR membrane 7 needs to be cleaned. During the cleaning process of the MABR membrane 7, the motor 171 is controlled to work. Since the motor 171 is installed on the top plate 3 and is located above the water surface, water is prevented from entering the motor 171 and affecting normal operation. If the sewage treatment pool is too deep, the height of the screw rod 172 can be lengthened to raise the motor 171 to prevent the sewage from submerging the motor 171. When the motor 171 is working, it drives the screw rod 172 to rotate. During the rotation of the screw rod 172, it drives the cross bar 173 to move upward, so that the cross bar 173 drives multiple movable seats 8 on the same side to move upward. The two ends of the cross bar 173 are limited by two sliding bars 174 to improve the stability of the vertical movement of the multiple movable seats 8 driven by the cross bar 173. During the upward movement of the movable seat 8, the two suction components 10 and the cleaning component 12 are driven to move upward synchronously; The top end of the external connecting pipe 11 of the suction assembly 10 is connected to the external mud and dirt extraction equipment, so that the annular suction pipe 101 can extract the mud and impurities attached to the outside of the MABR membrane 7 through the adsorption hole 102. At the same time, the movable seat 8 can slide outside the gear rod 16 when it moves upward, and the gear rod 16 is meshed with the bevel gear 2 14, so that the bevel gear 2 14 inside the movable seat 8 will rotate and synchronously drive the bevel gear 1 13 to rotate. The bevel gear 1 13 drives the fixed ring 121 in the cleaning assembly 12 to rotate through the tooth groove 126. The fixed ring 121 is located between the two pressure plates 901 and the slideways 125 on the upper and lower sides are in contact with the balls 903 between the two pressure plates 901, so that the fixed ring 121 will not separate from the two pressure plates 901 during the rotation, thereby improving the rotation stability of the fixed ring 121. At the same time, the fixed ring 121 is connected to the outer ring 110 of the cleaning assembly 12. The flexible ring 123 and the scraper 124 are driven to rotate by multiple elastic columns 122. Several scrapers 124 are equidistantly arranged on the outside of the MABR membrane 7, so that the multiple scrapers 124 can scrape the mud and impurities attached to the outside of the MABR membrane 7 during the rotation, making it easier for the mud and impurities to separate from the MABR membrane 7. The elastic columns 122 and the flexible ring 123 will deform under the action of external force and flexibly contact the outside of the MABR membrane 7 through the scraper 124, preventing the scraper 124 from damaging the MABR membrane 7. At the same time, the biofilm fragments or hard scale layers tightly attached to the MABR membrane 7 can be removed. Since the multiple scrapers 124 are located between the two suction pipes 101, the cleaned mud and impurities can be effectively extracted by the adsorption holes 102, preventing the mud and impurities from floating around and causing secondary pollution to the MABR membrane 7. When removing the MABR membrane 7 from the reactor, the two handles 192 are squeezed to make the two handles 192 drive the two blocks 191 to move in the groove 20 respectively. When the two blocks 191 move relative to each other and disengage from the slots 5 in the socket 4, the locking state between the mounting seat 6, the MABR membrane 7 and the top plate 3 can be released. Then, the two handles 192 are lifted up to make the handles 192 lift the MABR membrane 7 through the mounting seat 6 until the MABR membrane 7 is completely separated from the top plate 3, and then the MABR membrane 7 can be removed, which is convenient for maintenance and replacement of the MABR membrane 7. When installing the MABR membrane 7, the MABR membrane 7 is inserted into the socket 4 in the top plate 3 through the mounting seat 6. When the mounting seat 6 is stuck in the socket 4, the insertion The openings on both sides of the hole 4 will squeeze the bottom of the two blocks 191. Since one side of the bottom of the block 191 is designed as a slope, the two blocks 191 will move closer to each other after being compressed and squeeze the springs 194 on both sides until the block 191 is completely retracted into the groove 20. Continue to press down the mounting seat 6 so that it is completely inserted into the inside of the socket 4. At this time, the block 191 is supported by the elastic force of the spring 194, so that the block 191 is inserted into the slot 5. Since the top of the block 191 is designed as a flat surface, after the snap-in work is completed, the top of the block 191 is fitted with the top of the inner wall of the slot 5, so that the block 191 will not move up and detach from the slot 5, effectively achieving the purpose of locking the mounting seat 6, so as to facilitate the rapid assembly of the MABR membrane 7 and improve the convenience of operation.

Claims

1. A MABR membrane aeration biofilm reactor for advanced sewage treatment, comprising a reactor base (1), characterized in that: The four corners of the top of the reactor base (1) are respectively fixed with vertical poles (2), and the top ends of the four vertical poles (2) are fixedly connected with a top plate (3), and two groups of jacks (4) are provided in the top plate (3), and the number of each group of jacks (4) is four, and the two sides of the inner wall of the jacks (4) are respectively provided with card slots (5), and a mounting seat (6) is inserted through the jacks (4), and a MABR membrane (7) is fixed through the middle of the mounting seat (6), and the top end of the MABR membrane (7) passes through the mounting seat (6) and is connected with a one-way air valve (18), and a movable seat (8) is provided below the outer wall of the MABR membrane (7). A limiting assembly (9) is fixed on one side of the movable seat (8) close to the MABR membrane (7), and suction assemblies (10) are fixed to the top and bottom of the limiting assembly (9), respectively. The suction assembly (10) is sleeved on the outside of the MABR membrane (7), and the two suction assemblies (10) are connected to the outside of a connecting pipe (11), the top of the connecting pipe (11) passes through the top plate (3) and extends upward, and a cleaning assembly (12) is slidably connected inside the limiting assembly (9), and the cleaning assembly (12) is located between the two suction assemblies (10), and the cleaning assembly (12) is sleeved on the outside of the MABR membrane (7). The cleaning component (12) is externally connected to a bevel gear 1 (13), and the bevel gear 1 (13) is externally meshed with a bevel gear 2 (14). A T-shaped through hole (15) is provided inside the movable seat (8), and the bevel gear 1 (13) and the bevel gear 2 (14) are rotatably connected in the T-shaped through hole (15) through a shaft sleeve. The bevel gear 2 (14) is externally meshed with a gear rod (16), and the gear rod (16) slides through the through hole (15), and the top end of the gear rod (16) is fixed to the bottom of the top plate (3), and the bottom end of the gear rod (16) is fixed to the top of the reactor base (1). The movable seat (8) is fixedly connected with the same adjustment component (17), the top end of the adjustment component (17) is fixed in the top plate (3), and the bottom end of the adjustment component (17) is mounted on the reactor base (1). Grooves (20) are respectively provided on both sides of the interior of the mounting seat (6), and a locking component (19) is slidably provided in the groove (20). The portion of the locking component (19) that passes through the groove (20) is engaged in the card slot (5), and a limiting groove (21) is provided on one side of the inner wall of the groove (20), and the portion of the locking component (19) located in the groove (20) slides in the limiting groove (21).

2. A MABR membrane aeration biofilm reactor for advanced sewage treatment according to claim 1, characterized in that: The limiting assembly (9) includes two pressure plates (901) with a semi-annular design. A track (902) is provided between the two pressure plates (901). A plurality of balls (903) are provided in the track (902). The cleaning assembly (12) is located between the two pressure plates (901) and contacts the balls (903). The outer walls of the two pressure plates (901) are fixed to the movable seat (8).

3. A MABR membrane aeration biofilm reactor for advanced sewage treatment according to claim 2, characterized in that: The suction assembly (10) includes a suction pipe (101), which is annular in design and is sleeved on the outside of the MABR membrane (7). The suction pipe (101) is fixed on the pressure plate (901). The outsides of the two suction pipes (101) are connected to a connecting pipe (11), and the inner wall of the suction pipe (101) is connected to a plurality of adsorption holes (102) at equal intervals.

4. A MABR membrane aeration biofilm reactor for advanced sewage treatment according to claim 3, characterized in that: The cleaning assembly (12) includes a fixed ring (121), a plurality of elastic columns (122) are fixed on the inner wall of the fixed ring (121), a flexible ring (123) is fixed between the plurality of elastic columns (122), the flexible ring (123) is sleeved on the outside of the MABR membrane (7) and a plurality of scrapers (124) are provided on the inner wall, and the plurality of scrapers (124) are in contact with the MABR membrane (7).

5. A MABR membrane aeration biofilm reactor for advanced sewage treatment according to claim 4, characterized in that: The top and bottom of the fixing ring (121) are respectively provided with slideways (125), the fixing ring (121) is slidably connected between the two pressure plates (901), and the slideways (125) are in contact with a plurality of balls (903), and the outer wall of the fixing ring (121) is provided with a plurality of tooth grooves (126), and the tooth grooves (126) are meshedly connected with the bevel gear (13).

6. The MABR membrane aeration biofilm reactor for advanced sewage treatment according to claim 1, characterized in that: The adjustment component (17) includes a motor (171), the motor (171) is fixed on the top plate (3), a screw rod (172) is fixed on the output shaft of the motor (171), the top end of the screw rod (172) is rotatably connected to the top plate (3) through a shaft sleeve, and the bottom end of the screw rod (172) is rotatably connected to the reactor base (1) through a shaft sleeve, the screw rod (172) is externally threaded with a cross rod (173), one side of the cross rod (173) is fixed to four movable seats (8) on the same side, and sliding rods (174) are slidably passed through both ends of the cross rod (173), and the sliding rod (174) is fixedly connected between the top plate (3) and the reactor base (1).

7. The MABR membrane aeration biofilm reactor for advanced sewage treatment according to claim 1, characterized in that: The locking assembly (19) includes a card block (191), the card block (191) slides through the groove (20), and the top and bottom sides of the card block (191) are respectively designed in a plane and an inclined design. The card block (191) is connected to the card groove (5), and a handle (192) is fixed on the card block (191). The handle (192) slides through the groove (20), and a spring (194) and a stop bar (193) are fixed on the side of the handle (192) away from the card block (191). The other end of the spring (194) is fixed to one side of the inner wall of the groove (20), and the stop bar (193) slides in the limiting groove (21).

8. The MABR membrane aeration biofilm reactor for advanced sewage treatment according to claim 1, characterized in that: A dirt collecting box (22) is fixed on the top of the reactor base (1), the bottom of the inner wall of the dirt collecting box (22) is designed to be inclined, and the bottom of the dirt collecting box (22) is connected to a mud extraction pipe (23), the other end of which passes through the reactor base (1) and the top plate (3) and extends upward.

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