A mabr membrane aeration biofilm reactor for advanced treatment of sewage

Abstract

The application discloses a MABR membrane aeration biofilm reactor for advanced treatment of sewage, and belongs to the technical field of sewage treatment. The height of the moving seat is adjusted through the adjusting assembly. The fixed ring drives the flexible ring and the scraper to rotate through the plurality of elastic columns, and the mud and impurities attached to the outside of the MABR membrane are scraped. The elastic column and the flexible ring are deformed under the action of external force and are in flexible contact with the outside of the MABR membrane through the scraper, so that the damage of the scraper to the MABR membrane is prevented, and the closely attached biofilm fragments or hard scale on the MABR membrane can be removed. Since the plurality of scrapers are located between the two suction pipes, the fallen mud and impurities can be effectively extracted by the suction holes, so that the secondary pollution of the MABR membrane caused by the floating mud and impurities is prevented. Therefore, the traditional cleaning method of using a single flushing method or using a chemical cleaning method is abandoned, the cleaning effect is improved without damaging the MABR membrane, and the service life of the MABR membrane is prolonged.

Description

TECHNICAL FIELD

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

[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 environmental quality are continuously improving. Traditional sewage treatment processes, such as activated sludge method and oxidation ditch, have been difficult to meet the needs of advanced sewage treatment.

[0003] Membrane aeration biofilm reactor is a high-efficiency biofilm technology for advanced sewage treatment. It uses MABR membrane aeration to treat sewage. By combining the advantages of gas separation membrane and biofilm method, it realizes simultaneous nitrification and denitrification, low-energy aeration and efficient pollutant removal. The MABR membrane aeration function is to supply oxygen directly to the inside of the biofilm through gas-permeable membranes such as hollow fiber membranes. Oxygen does not need to be mass transferred through water, and the utilization rate can reach more than 80%, greatly reducing the energy consumption of aeration.

[0004] 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. Excessive growth of biofilm and adsorption of pollutants will significantly reduce the oxygen transfer efficiency. Aging and shedding of biofilm and suspended particles will form sludge, part of which will settle, and the other part will accumulate in the membrane area. Currently, the MABR membrane surface cleaning work uses 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, it will cause chemical residues and increase the risk of toxicity of the effluent. SUMMARY

[0005] The present application aims to provide a MABR membrane aeration biofilm reactor for advanced sewage treatment to solve the problem of cleaning the MABR membrane surface by using 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, it will cause chemical residues and increase the risk of toxicity of the effluent.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] The utility model provides a kind of MABR membrane aeration biological membrane reactor for sewage advanced treatment, including reactor base, and the top of reactor base is fixed with vertical rod respectively in four corners, and the top of four vertical rods is fixedly connected with top plate, two groups of insertion holes are set in the top plate, and the number of each group of insertion holes is four, the two sides of insertion hole inner wall are respectively set with clamping groove, and installation seat is penetrated and connected in insertion hole, and MABR membrane is penetrated and fixed in the middle part of installation seat, and the top of MABR membrane is penetrated installation seat and is connected with one-way air valve, and the lower of MABR membrane outer wall is equipped with moving seat, and the side of moving seat close to MABR membrane is fixed with limiting component, and the top and bottom of limiting component are respectively fixed with suction component, and suction component is sleeved in MABR membrane outside, and the outside of two suction components is connected with communicating pipe, and the top of communicating pipe is penetrated top plate and extends to above, and limiting component is slidably connected with cleaning component inside, and cleaning component is between two suction components, and cleaning component is sleeved in MABR membrane outside, and cleaning component is connected with bevel gear one outside, and bevel gear one is engagedly connected with bevel gear two, and T-shaped through-hole is set in the inside of moving seat, and bevel gear one and bevel gear two are rotatably connected in T-shaped through-hole by shaft sleeve, and bevel gear two is engagedly connected with rack rod outside, and rack rod is penetrated and slides in through-hole, and the top of rack rod is fixed with the bottom of top plate, and the bottom of rack rod is fixed with the top of reactor base, and the same adjusting component is fixedly connected on several moving seats of front and back sides, and the top of adjusting component is penetrated and fixed in top plate, and the bottom of adjusting component is installed on reactor base, and recess is set on the two sides in the inside of installation seat, and locking component is penetrated and slides in recess, and the part of locking component penetrated recess is clamped in clamping groove, and limit slot is set on the side of recess inner wall, and the part of locking component in recess slides in limit slot.

[0008] As a further scheme of the utility model, the limiting component includes a pressing plate, the number of the pressing plate is two and the design is half ring, a track is set between the two pressing plates, a plurality of balls are arranged in the track, the cleaning component is arranged between the two pressing plates and in contact with the balls, and the outer wall of the two pressing plates is fixed with the moving seat.

[0009] As a further scheme of the utility model, the suction component includes a suction pipe, the design of the suction pipe is ring and is sleeved outside the MABR membrane, and the suction pipe is fixed on the pressing plate, the outside of the two suction pipes is connected with a communicating pipe, and a plurality of adsorption holes are arranged at equal intervals on the inner wall of the suction pipe.

[0010] As a further scheme of the utility model, the cleaning component 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 outside the MABR membrane and the inner wall is provided with a plurality of scrapers, and the plurality of scrapers are in contact with the MABR membrane.

[0011] As a further scheme of the present application, the top and bottom of the fixing ring are respectively provided with sliding channels, the fixing ring is slidingly connected between the two pressing plates and the sliding channels are in contact with the plurality of balls, the outer wall of the fixing ring is provided with a plurality of gear grooves, and the gear grooves are in meshing connection with the bevel gears.

[0012] As a further scheme of the present application, the adjusting assembly comprises a motor fixed on the top plate, a lead screw fixed on the output shaft of the motor, the top end of the lead screw being rotatably connected in the top plate through a shaft sleeve and the bottom end of the lead screw being rotatably connected on the reactor base through a shaft sleeve, a cross bar being in external thread connection with the lead screw, one side of the cross bar being fixed with four moving seats on the same side, and two ends of the cross bar being slidingly penetrated by slide rods, the slide rods being fixedly connected between the top plate and the reactor base.

[0013] As a further scheme of the present application, the locking assembly comprises a clamping block slidingly penetrated in the groove, one side of the top and bottom of the clamping block being respectively designed as a plane and an inclined surface, the clamping block being clamped in the clamping groove, a handle being fixed on the clamping block, the handle slidingly penetrating in the groove, a spring and a blocking strip being fixed on the side of the handle away from the clamping block, the other end of the spring being fixed on one side of the inner wall of the groove, and the blocking strip sliding in the limiting groove.

[0014] As a further scheme of the present application, the top of the reactor base is fixed with a dirt collecting box, the bottom of the inner wall of the dirt collecting box is designed as an inclined surface, the bottom of the dirt collecting box is communicated with a mud suction pipe, the other end of the mud suction pipe penetrating through the reactor base and the top plate and extending upwards.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] The application adjusts the height of the moving seat by adjusting the assembly, and the annular suction pipe can extract the mud and impurities attached outside the MABR membrane through the suction hole. When the moving seat moves upward, it can slide outside the tooth bar, and the tooth bar is connected with the bevel gear II in meshing, so that the bevel gear II inside the moving seat rotates and synchronously drives the bevel gear I to rotate. The bevel gear I drives the fixed ring in the cleaning assembly to rotate through the tooth groove. The fixed ring is located between the two pressing plates, and the upper and lower sides of the slide way contact with the ball between the two pressing plates, so that the fixed ring does not separate from the two pressing plates during rotation, improving the stability of the rotation of the fixed ring. At the same time, the fixed ring drives the flexible ring and the scraper to rotate through the elastic column. A plurality of scrapers are equidistantly arranged outside the MABR membrane, so that the plurality of scrapers scrape and brush the mud and impurities attached outside the MABR membrane during rotation, facilitating the separation of the mud and impurities from the MABR membrane. The elastic column and the flexible ring will deform under the action of external force and flexibly contact with the MABR membrane outside through the scraper, preventing the scraper from damaging the MABR membrane. At the same time, it can remove the closely attached biofilm fragments or hard scale layer on the MABR membrane. Since the plurality of scrapers are located between the two suction pipes, the fallen mud and impurities can be effectively extracted by the suction hole, preventing the mud and impurities from scattering around to cause secondary pollution to the MABR membrane. Therefore, the traditional single flushing method or chemical cleaning method is abandoned to clean the reactor, which improves the cleaning effect without damaging the MABR membrane, thereby prolonging the service life of the MABR membrane.

[0017] 2、The application drives two clamping blocks to move in the groove by extruding two handles, when the two clamping blocks move away from the clamping groove in the jack, the locking state between the mounting seat, the MABR membrane and the top plate can be released. Then, the two handles are lifted up, the MABR membrane is lifted up by the mounting seat until the MABR membrane is completely separated from the top plate, and then the MABR membrane can be removed, which is convenient for maintaining and replacing the MABR membrane. When installing the MABR membrane, the MABR membrane is inserted into the jack in the insertion hole in the top plate, the bottom of the two clamping blocks is extruded at the opening on both sides of the insertion hole. Since one side of the bottom of the clamping block is designed as an inclined surface, the two clamping blocks will move close to each other and extrude the springs on both sides after being pressed, until the clamping blocks are completely retracted into the groove. Continue to press down the mounting seat to make it completely clamped into the insertion hole. At this time, the clamping blocks are supported by the elastic force of the springs, so that the clamping blocks are clamped into the clamping groove. Since the top of the clamping block is designed as a flat surface, the top of the clamping block is in close contact with the top of the inner wall of the clamping groove after the clamping work is completed, so that the clamping block will not move up and separate from the clamping groove, effectively achieving the purpose of locking the mounting seat, so as to facilitate the quick assembly of the MABR membrane and improve the operation convenience. Therefore, the modular MABR membrane can be flexibly combined according to actual needs, which significantly enhances the adaptability to different scenes. The modular assembly can be disassembled for transportation and on-site assembly, and one or several modules can be closed separately for local maintenance without affecting the overall operation of the reactor. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention viewed from below;

[0021] Figure 3 This is a schematic diagram of the reactor base and top plate of the present invention;

[0022] Figure 4 This is a schematic diagram of the connection between the mounting base and the MABR membrane of the present invention;

[0023] Figure 5 This is a schematic diagram of the locking component of the present invention;

[0024] Figure 6 This is a schematic diagram of the connection between the movable seat and the toothed rod of the present invention;

[0025] Figure 7 This is a schematic diagram of the cross-section of the movable seat of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the limiting component of the present invention;

[0027] Figure 9 This is a top view of the cleaning component of the present invention.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1, reactor base; 2, vertical rod; 3, top plate; 4, jack; 5, clamping groove; 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, communication pipe; 12, cleaning assembly; 121, fixed ring; 122, elastic column; 123, flexible ring; 124, scraper; 125, slide; 126, tooth groove; 13, bevel gear one; 14, bevel gear two; 15, through hole; 16, rack; 17, adjusting assembly; 171, motor; 172, screw rod; 173, cross bar; 174, slide rod; 18, one-way air valve; 19, locking assembly; 191, clamping block; 192, handle; 193, blocking bar; 194, spring; 20, groove; 21, limiting groove; 22, sewage collection box; 23, mud suction pipe. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0031] Please refer to Figures 1-9 The present application provides a technical solution:

[0032] A MABR membrane aeration biofilm reactor for advanced treatment of sewage, comprising a reactor base 1, four vertical rods 2 are fixed at the top of the reactor base 1, the top ends of the four vertical rods 2 are fixedly connected with a top plate 3, two groups of jacks 4 are formed in the top plate 3, the number of jacks 4 in each group is four, clamping grooves 5 are formed on both sides of the inner wall of the jacks 4, and mounting seats 6 are clamped in the jacks 4;

[0033] Because the jacks 4 are designed in inverted T shape and the shape is matched with the shape of the mounting seats 6, when the mounting seats 6 are clamped into the jacks 4 designed in T shape, the mounting seats 6 are limited and prevented from falling below the top plate 3.

[0034] The middle part of the mounting seat 6 is fixedly provided with the MABR film 7, the top end of the MABR film 7 penetrates through the mounting seat 6 and is connected with the one-way air valve 18, the lower part of the outer wall of the MABR film 7 is provided with the moving seat 8, the side close to the MABR film 7 of the moving seat 8 is fixedly provided with the limiting assembly 9, the top and bottom of the limiting assembly 9 are respectively fixedly provided with the suction assembly 10, the suction assembly 10 is sleeved on the outer wall of the MABR film 7, and the outer wall of the two suction assemblies 10 is connected with the communication pipe 11, the top end of the communication pipe 11 penetrates through the top plate 3 and extends to the upper side, the limiting assembly 9 is slidably connected with the cleaning assembly 12 in the inner wall of the limiting assembly 9, the cleaning assembly 12 is located between the two suction assemblies 10 and is sleeved on the outer wall of the MABR film 7, the outer wall of the cleaning assembly 12 is connected with the bevel gear one 13, the bevel gear one 13 is engaged with the bevel gear two 14, the moving seat 8 is provided with the T-shaped through hole 15 in the inner wall, the bevel gear one 13 and the bevel gear two 14 are rotatably connected in the T-shaped through hole 15 through the shaft sleeve, the bevel gear two 14 is engaged with the toothed rod 16, the toothed rod 16 penetrates through and slides in the through hole 15, and the top end of the toothed rod 16 is fixedly connected with the bottom of the top plate 3.

[0035] Through the cooperation between the bevel gear two 14 and the toothed rod 16, the moving seat 8 can slide on the outer wall of the toothed rod 16 when moving upwards, and the bevel gear two 14 in the moving seat 8 rotates and synchronously drives the bevel gear one 13 to rotate, so that the bevel gear one 13 drives the cleaning assembly 12 to rotate and work.

[0036] The bottom end of the toothed rod 16 is fixedly connected with the top of the reactor base 1, the same adjusting assembly 17 is fixedly connected on the moving seats 8 on the front and back sides, the top end of the adjusting assembly 17 penetrates through and is fixedly connected in the top plate 3, the bottom end of the adjusting assembly 17 is fixedly connected on the reactor base 1, the recesses 20 are respectively formed in the inner walls of the two sides of the mounting seat 6, the locking assemblies 19 penetrate through and slide in the recesses 20, the penetrating parts of the locking assemblies 19 in the recesses 20 are clamped in the clamping grooves 5, the limiting grooves 21 are formed in the inner walls of the recesses 20, and the parts of the locking assemblies 19 in the recesses 20 slide in the limiting grooves 21.

[0037] As a further scheme of the present application, the limiting assembly 9 comprises the pressing plates 901, the number of the pressing plates 901 is two and the pressing plates 901 are designed as half rings, the track 902 is formed between the two pressing plates 901, a plurality of rolling balls 903 are arranged in the track 902, the cleaning assembly 12 is located between the two pressing plates 901 and is in contact with the rolling balls 903, and the outer walls of the two pressing plates 901 are fixedly connected with the moving seat 8.

[0038] During work, the cleaning assembly 12 is located between the two pressing plates 901 and is in contact with the rolling balls 903 between the two pressing plates 901, so that the cleaning assembly 12 does not separate from the two pressing plates 901 during rotation, and the stability of the rotating work of the cleaning assembly 12 is improved.

[0039] As a further scheme of the present application, the suction assembly 10 comprises suction pipes 101 which are annular in design and sleeved outside the MABR membrane 7, and the suction pipes 101 are fixed on the pressing plates 901, the outer portions of the two suction pipes 101 are connected with the communication pipes 11, and the inner walls of the suction pipes 101 are connected with a plurality of suction holes 102 at equal intervals;

[0040] In operation, the top ends of the communication pipes 11 of the suction assembly 10 are connected with external mud extraction equipment, so that the annular suction pipes 101 can extract the mud and impurities adhered outside the MABR membrane 7 through the suction holes 102.

[0041] As a further scheme of the present application, the cleaning assembly 12 comprises a fixed ring 121, the inner wall of the fixed ring 121 is fixed with a plurality of elastic columns 122, the plurality of elastic columns 122 are fixed with a flexible ring 123, the flexible ring 123 is sleeved outside the MABR membrane 7 and is provided with a plurality of scrapers 124 on the inner wall, 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 fallen mud and impurities can be effectively extracted by the suction holes 102, so as to prevent the mud and impurities from being scattered around to cause secondary pollution to the MABR membrane 7.

[0042] In operation, the fixed ring 121 drives the flexible ring 123 and the scrapers 124 to rotate through the plurality of elastic columns 122, the plurality of scrapers 124 are arranged at equal intervals outside the MABR membrane 7, so that the plurality of scrapers 124 can scrape and brush the mud and impurities adhered outside the MABR membrane 7 in the process of rotation, thereby facilitating the mud and impurities to separate from the MABR membrane 7.

[0043] The elastic columns 122 and the flexible ring 123 can be deformed under the action of external force and are in flexible contact with the outside of the MABR membrane 7 through the scrapers 124, so as to prevent the scrapers 124 from damaging the MABR membrane 7, and the closely adhered biofilm fragments or hard scale on the MABR membrane 7 can be removed.

[0044] As a further scheme of the present application, the top and bottom portions of the fixed ring 121 are respectively provided with sliding channels 125, the fixed ring 121 is slidingly connected between the two pressing plates 901 and the sliding channels 125 are in contact with the plurality of rolling balls 903, the outer wall of the fixed ring 121 is provided with a plurality of gear grooves 126, and the gear grooves 126 are in meshing connection with the bevel gear one 13.

[0045] In operation, the fixed ring 121 in the cleaning assembly 12 is driven to rotate by the bevel gear one 13 through the gear grooves 126, the fixed ring 121 is located between the two pressing plates 901 and the sliding channels 125 on the upper and lower sides are in contact with the rolling balls 903 between the two pressing plates 901, so that the fixed ring 121 will not be separated from the two pressing plates 901 in the process of rotation, thereby improving the stability of the rotating cleaning work of the scrapers 124 inside the fixed ring 121.

[0046] As a further scheme of the present application, the adjusting assembly 17 comprises a motor 171 fixed on the top plate 3, a lead screw 172 fixed on an output shaft of the motor 171, a top end of the lead screw 172 rotatably connected in the top plate 3 through a shaft sleeve, and a bottom end of the lead screw 172 rotatably connected on the reactor base 1 through a shaft sleeve, a cross bar 173 externally screwed on the lead screw 172, one side of the cross bar 173 fixed with the four moving bases 8 on the same side, and two ends of the cross bar 173 slidingly penetrating a slide bar 174 fixedly connected between the top plate 3 and the reactor base 1;

[0047] In operation, the motor 171 drives the lead screw 172 to rotate, and the lead screw 172 drives the cross bar 173 to move upward in the process of rotation, so that the cross bar 173 drives the multiple moving bases 8 on the same side to move upward, and the two slide bars 174 limit the two ends of the cross bar 173 to improve the stability of the vertical movement of the multiple moving bases 8 driven by the cross bar 173.

[0048] As a further scheme of the present application, the locking assembly 19 comprises a clamping block 191 slidingly penetrating the groove 20, and one side of the top and bottom of the clamping block 191 respectively designed as a flat surface and an inclined surface, the clamping block 191 clamped in the clamping groove 5, a handle 192 fixed on the clamping block 191 slidingly penetrating the groove 20;

[0049] In operation, the two handles 192 are squeezed to drive the two clamping blocks 191 to move in the groove 20, and when the two clamping blocks 191 are moved away from each other and out of the clamping groove 5 in the jack 4, the locking state between the mounting base 6, the MABR film 7 and the top plate 3 is released, and then the two handles 192 are lifted to lift the MABR film 7 through the mounting base 6 until the MABR film 7 is completely separated from the top plate 3, so that the MABR film 7 can be removed for maintenance and replacement;

[0050] The handle 192 is fixed with a spring 194 and a stop bar 193 on the side away from the clamping block 191, the other end of the spring 194 is fixed on one side of the inner wall of the groove 20, and the stop bar 193 slides in the limiting groove 21 to be limited by the limiting groove 21, thereby improving the stability of the horizontal movement of the handle 192 and the clamping block 191;

[0051] When working, due to the fact that one side of the bottom of the clamping block 191 is designed as an inclined surface, the two clamping blocks 191 are close to each other and extrude the springs 194 on the two sides after being pressed, until the clamping block 191 is completely retracted into the recess 20, the mounting seat 6 is continuously pressed to be completely clamped into the inside of the insertion hole 4, at this time, the clamping block 191 is supported by the elastic force of the spring 194, so that the clamping block 191 is clamped into the clamping groove 5, due to the fact that the top of the clamping block 191 is designed as a plane, the top of the clamping block 191 is attached to the top of the inner wall of the clamping groove 5 after the clamping work is completed, so that the clamping block 191 cannot move upward and is separated from the clamping groove 5, and the stability of the installation and locking of the mounting seat 6 is improved.

[0052] As a further scheme of the present application, the top of the reactor base 1 is fixed with a dirt collecting box 22, the bottom of the inner wall of the dirt collecting box 22 is designed as an inclined surface, and the bottom of the dirt collecting box 22 is communicated with a mud suction pipe 23, the other end of the mud suction pipe 23 penetrates through the reactor base 1 and the top plate 3 and extends upwards;

[0053] When working, part of the precipitate generated by the aeration reaction falls into the dirt collecting box 22 on the reactor base 1 for collection, so that the dirt is prevented from scattering around and is inconvenient for subsequent centralized treatment, and the bottom of the inner wall of the dirt collecting box 22 is designed as an inclined surface, so that the purpose of guiding the precipitate is achieved, and the dirt collecting box 22 is convenient for the mud suction pump outside to clean the inside of the dirt collecting box 22.

[0054] The working principle of the present application is as follows:

[0055] When the wastewater is deeply treated, the reactor is immersed in the wastewater treatment tank, and the top plate 3 and the top of the two adjusting assemblies 17 are located above the water surface, then the one-way air valve 18 at the top of the MABR membrane 7 is connected to the air supply device, the high-oxygen-containing air enters the MABR membrane 7 through the one-way air valve 18, the setting of the one-way air valve 18 can prevent the backflow of gas and liquid in the MABR membrane 7, when the air passes through the membrane cavity in the MABR membrane 7, the gas diffused outward of the membrane cavity is always unobstructed to the membrane hole, so that the influence of the membrane group on the membrane pollution is minimized, the membrane wire for the growth of microorganisms has a high specific surface area, can effectively retain the characteristic microorganisms required for biological treatment of wastewater, and can achieve the purposes of low-energy-consumption aeration and high-efficiency pollutant removal, part of the precipitate generated by the aeration reaction falls into the dirt collecting box 22 on the reactor base 1 for collection, the membrane surface is the core area of the attachment and metabolism of the biofilm, and the excessive growth of the biofilm and the adsorption of the pollutants will significantly reduce the oxygen transfer efficiency in the MABR membrane 7, so that the MABR membrane 7 needs to be cleaned;

[0056] In the process of cleaning the MABR membrane 7, the motor 171 is controlled to work. Since the motor 171 is installed on the top plate 3 and located above the water surface, it prevents the motor 171 from being affected by water and working normally. If the sewage treatment tank is too deep, the height of the lead screw 172 can be lengthened to raise the motor 171, so as not to be submerged by sewage. The motor 171 will drive the lead screw 172 to rotate when it is working. The lead screw 172 will drive the cross rod 173 to move upwards during rotation, so that the cross rod 173 drives multiple moving seats 8 on the same side to move upwards. The two slide rods 174 limit the two ends of the cross rod 173, which improves the stability of the vertical movement of the cross rod 173 and the multiple moving seats 8. The two suction assemblies 10 and the cleaning assembly 12 will move upwards synchronously during the upward movement of the moving seat 8;

[0057] The top end of the external communication pipe 11 of the suction assembly 10 is connected to the external mud suction device, so that the annular suction pipe 101 can suck the mud and impurities attached to the outside of the MABR membrane 7 through the suction hole 102. At the same time, the moving seat 8 can slide outside the toothed rod 16 when it moves upwards, and the toothed rod 16 is connected with the bevel gear two 14, so that the bevel gear two 14 inside the moving seat 8 rotates and synchronously drives the bevel gear one 13 to rotate. The bevel gear one 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 upper and lower sides of the slide 125 are in contact with the two pressure plates 901 and the ball 903 between the two pressure plates 901, so that the fixed ring 121 will not be separated from the two pressure plates 901 during rotation, improving the stability of the rotation of the fixed ring 121. At the same time, the fixed ring 121 drives the flexible ring 123 and the scraper 124 to rotate through the multiple elastic columns 122. The plurality of scrapers 124 are equidistantly arranged outside the MABR membrane 7, so that the plurality of scrapers 124 can scrape and brush the mud and impurities attached to the outside of the MABR membrane 7 during rotation, facilitating the detachment of the mud and impurities from the MABR membrane 7. The elastic column 122 and the flexible ring 123 will deform under the action of external force and make flexible contact with the MABR membrane 7 through the scraper 124, which prevents the scraper 124 from damaging the MABR membrane 7 and removes the closely attached biofilm fragments or hard scale on the MABR membrane 7. Since the plurality of scrapers 124 are located between the two suction pipes 101, the cleaned mud and impurities can be effectively sucked by the suction hole 102, preventing the mud and impurities from scattering around and causing secondary pollution to the MABR membrane 7;

[0058] When the MABR film 7 is disassembled from the reactor, the two handles 192 are extruded to drive the two clamping blocks 191 to move in the grooves 20 respectively, and when the two clamping blocks 191 move away from each other and are disengaged from the clamping grooves 5 in the insertion holes 4, the locking state between the mounting seat 6, the MABR film 7 and the top plate 3 is released. Then the two handles 192 are lifted up, and the MABR film 7 is lifted up by the handles 192 through the mounting seat 6 until the MABR film 7 is completely separated from the top plate 3, and then the MABR film 7 can be disassembled, which is convenient for maintaining and replacing the MABR film 7. When the MABR film 7 is installed, the MABR film 7 is inserted into the insertion holes 4 in the top plate 3 through the mounting seat 6. During the process of inserting the mounting seat 6 into the insertion holes 4, the openings on both sides of the insertion holes 4 will extrude the bottoms of the two clamping blocks 191. Since one side of the bottom of the clamping block 191 is designed as an inclined surface, the two clamping blocks 191 will move close to each other and extrude the springs 194 on both sides after being pressed, until the clamping blocks 191 are completely retracted into the grooves 20. Continue to press down the mounting seat 6 to make it completely inserted into the insertion holes 4. At this time, the clamping blocks 191 are supported by the elastic force of the springs 194, so that the clamping blocks 191 are clamped into the clamping grooves 5. Since the top of the clamping block 191 is designed as a flat surface, the top of the clamping block 191 is in close contact with the top of the inner wall of the clamping groove 5 after the clamping work is completed, so that the clamping block 191 will not move up and disengage from the clamping groove 5, effectively achieving the purpose of locking the mounting seat 6, so as to facilitate the quick assembly of the MABR film 7 and improve the operation convenience.

Claims

1. A MABR membrane aerated biofilm reactor for advanced treatment of sewage, comprising a reactor base (1), characterized in that: The top of the reactor base (1) is fixed with a vertical rod (2) at each corner, the top end of the four vertical rods (2) is fixedly connected with a top plate (3), two groups of jack plugs (4) are arranged in the top plate (3), and the number of each group of jack plugs (4) is four, the two sides of the inner wall of the jack plug (4) are respectively provided with a clamping groove (5), the jack plug (4) is penetrated and connected with a mounting seat (6), the middle part of the mounting seat (6) is penetrated and fixedly connected with a MABR film (7), the top end of the MABR film (7) penetrates the mounting seat (6) and is connected with a one-way air valve (18), the outer wall of the MABR film (7) is provided with a moving seat (8) below, the side of the moving seat (8) close to the MABR film (7) is fixedly connected with a limiting assembly (9), the top and bottom of the limiting assembly (9) are respectively fixedly connected with a suction assembly (10), the suction assembly (10) is sleeved on the outer wall of the MABR film (7), and the two suction assemblies (10) are connected with a communication pipe (11), the top end of the communication pipe (11) penetrates the top plate (3) and extends to the upper side, the limiting assembly (9) is slidably connected with a cleaning assembly (12), the cleaning assembly (12) is located between the two suction assemblies (10) and is in contact with the ball (903), the outer wall of the two pressing plates (901) is fixed with the moving seat (8).

2. The MABR membrane aerated biofilm reactor for advanced treatment of sewage according to claim 1, characterized in that: The limiting assembly (9) comprises a pressing plate (901), the number of the pressing plate (901) is two and the pressing plate (901) is designed as a half ring, an orbit (902) is arranged between the two pressing plates (901), a plurality of balls (903) are arranged in the orbit (902), the cleaning assembly (12) is located between the two pressing plates (901) and is in contact with the ball (903), and the outer wall of the two pressing plates (901) is fixed with the moving seat (8).

3. The MABR membrane aerated biofilm reactor for advanced treatment of wastewater according to claim 2, characterized in that: The suction assembly (10) comprises a suction pipe (101), which is annularly designed and sleeved outside the MABR membrane (7), and the suction pipe (101) is fixed on the pressing plate (901), and the outer portions of the two suction pipes (101) are connected with the communication pipe (11), and the inner wall of the suction pipe (101) is connected with a plurality of adsorption holes (102) at equal intervals.

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

5. The MABR membrane aerated biofilm reactor for advanced treatment of wastewater according to claim 4, characterized in that: The top and bottom of the fixing ring (121) are respectively provided with sliding grooves (125), the fixing ring (121) is slidingly connected between the two pressing plates (901) and the sliding grooves (125) are in contact with a plurality of rolling balls (903), and the outer wall of the fixing ring (121) is provided with a plurality of gear grooves (126), and the gear grooves (126) are in meshing connection with the bevel gear one (13).

6. The MABR membrane aerated biofilm reactor for advanced treatment of wastewater of claim 1, wherein: The adjusting assembly (17) comprises a motor (171), the motor (171) is fixed on the top plate (3), a lead screw (172) is fixed on the output shaft of the motor (171), the top end of the lead screw (172) is rotatably connected in the top plate (3) through a shaft sleeve, the bottom end of the lead screw (172) is rotatably connected on the reactor base (1) through a shaft sleeve, the lead screw (172) is externally screwed with a cross rod (173), one side of the cross rod (173) is fixed with four moving seats (8) on the same side, and both ends of the cross rod (173) are slidingly penetrated with sliding rods (174), and the sliding rods (174) are fixedly connected between the top plate (3) and the reactor base (1).

7. The MABR membrane aerated biofilm reactor for advanced treatment of wastewater of claim 1, wherein: The locking assembly (19) comprises a clamping block (191), the clamping block (191) is slidingly penetrated in the groove (20), one side of the top and bottom of the clamping block (191) is respectively designed as a plane and an inclined surface, the clamping block (191) is clamped in the clamping groove (5), a handle (192) is fixed on the clamping block (191), the handle (192) is slidingly penetrated in the groove (20), the side, away from the clamping block (191), of the handle (192) is fixed with a spring (194) and a blocking strip (193), the other end of the spring (194) is fixed on one side of the inner wall of the groove (20), and the blocking strip (193) is slidingly in the limiting groove (21).

8. The MABR membrane aerated biofilm reactor for advanced treatment of wastewater of claim 1, wherein: The top of the reactor base (1) is fixed with a dirt collecting box (22), the bottom of the inner wall of the dirt collecting box (22) is designed as an inclined surface, the bottom of the dirt collecting box (22) is connected with a mud suction pipe (23), the other end of the mud suction pipe (23) is penetrated through the reactor base (1) and the top plate (3) and extends upwards.

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