Integrated anaerobic digestion membrane bioreactor

Abstract

The invention discloses an integrated anaerobic digestion membrane bioreactor, which effectively achieves the purpose of conveniently backwashing a filter membrane, and comprises an anaerobic digestion reactor for storing anaerobic microorganisms, the feed end of the anaerobic digestion reactor is connected with a batching tank, and the feed end of the batching tank is connected with an anaerobic digestion reactor. The discharging end of the anaerobic digestion reactor is connected with a filtering mechanism used for solid-liquid separation, the filtering mechanism sequentially comprises a feeding part, a filtering part and a discharging part which are communicated with one another from bottom to top, the interior of the filtering part is detachably connected with a filtering box, and the interior of the filtering box is detachably connected with a plurality of filtering assemblies. The device is ingenious in conception and simple and convenient to operate, effectively facilitates disassembly, assembly and maintenance of workers, facilitates thorough cleaning of the interior of the filter box by the workers, facilitates pipeline connection of different reaction procedures, can automatically clean a filter membrane, facilitates disassembly and assembly of the whole device, and improves the working efficiency. And the back-washed reactants can be conveniently discharged.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of anaerobic reaction, and relates to an integrated anaerobic digestion membrane bioreactor. BACKGROUND

[0002] Anaerobic digestion can recover resources and energy at the same time, and has low operation cost, and is one of ideal treatment technologies. However, the traditional anaerobic digestion system has problems such as long start-up time, unstable treatment effect, low methanation efficiency, and serious sludge loss. The anaerobic membrane bioreactor (AnMBR) is a combination of anaerobic technology and membrane separation technology, can efficiently intercept pollutants, ensure excellent effluent water quality, significantly improve the methanation efficiency, and realize efficient energy recovery. The ultrafiltration membrane in the AnMBR can completely separate the water retention time and the solid retention time, so that the biomass in the digester is well controlled, which is beneficial to the enrichment of functional bacteria groups (such as methanogenic bacteria) with long generation cycles in the reactor, thereby improving the stability of the system and the methane production, and obtaining high-quality effluent, which does not contain suspended solids and pathogens, and the pretreatment process for extracting nitrogen and phosphorus from the effluent is saved.

[0003] However, in the use process of the existing ultrafiltration membrane, although the high-quality water supply is a more competitive factor than the traditional anaerobic digestion system, the ultrafiltration membrane is prone to blockage during use, and therefore needs to be cleaned frequently, which is very inconvenient, and therefore a digestion anaerobic bioreactor for conveniently cleaning the ultrafiltration membrane is needed to solve the above problems. SUMMARY

[0004] In view of the above problems, the application provides an integrated anaerobic digestion membrane bioreactor, which solves the problems in the prior art.

[0005] In order to achieve the above purpose, the technical scheme adopted by the application is as follows:

[0006] An integrated anaerobic digestion membrane bioreactor, comprising an anaerobic digestion reactor for storing anaerobic microorganisms, a batching tank connected to the feed end of the anaerobic digestion reactor, and a filtering mechanism for solid-liquid separation connected to the discharge end of the anaerobic digestion reactor, wherein the filtering mechanism comprises, from bottom to top, a feed part, a filtering part and a discharge part which are in communication with each other, the inside of the filtering part is detachably connected with a filtering box, and the inside of the filtering box is detachably connected with a plurality of filtering assemblies, each filtering assembly comprises a mounting frame, a filtering frame and a cleaning brush for cleaning the bottom of the filtering frame, and the filtering frame and the cleaning brush are detachably connected to the inside of the mounting frame.

[0007] Preferably, the rear side of the filter part is provided with a first dismounting plate, the first dismounting plate is connected with the filter part through bolts, the lower side of the filter part is fixedly connected with a first fixed plate, the upper side of the feeding part is fixedly connected with a second fixed plate, and the first fixed plate and the second fixed plate are detachably connected.

[0008] Preferably, a plurality of dismounting grooves are formed in the left and right sides of the filter box, a second dismounting plate is detachably connected in each dismounting groove, a box cover is detachably connected to the rear side of the filter box, the rear side of each second dismounting plate is fixedly connected to the front side of the box cover, a clamping block is fixedly connected to one side of each second dismounting plate close to the dismounting groove, a clamping groove is formed in each dismounting groove, and the clamping block and the clamping groove cooperate to form a structure in which the first dismounting plate is detachably connected with the filter box.

[0009] Preferably, a third fixed plate is fixedly connected to the upper side of the filter part, a fourth fixed plate is fixedly connected to the lower side of the discharging part, and the third fixed plate is detachably connected with the fourth fixed plate.

[0010] Preferably, a filter membrane is fixedly connected to the bottom of the filter frame, and the upper side of the cleaning brush abuts against the lower side of the filter membrane.

[0011] Preferably, a cleaning frame is detachably connected to the lower side of the filter frame, two sliding grooves are formed in the cleaning frame, a sliding block is slidably connected in each sliding groove, a power plate is fixedly connected to the lower side of the cleaning brush, and the left and right sides of the power plate are fixedly connected with corresponding sliding blocks.

[0012] Preferably, a plurality of fixed bolts are arranged on the upper side of the filter frame, and the lower side of each fixed bolt is threadedly connected with the mounting frame through the filter frame.

[0013] Preferably, a mounting block is fixedly connected in the filter box, a mounting groove corresponding to the mounting frame is formed in the rear side of the mounting block, and a connecting block matched with the mounting groove is fixedly connected to the front side of each mounting frame.

[0014] Preferably, a plurality of sliding bars for longitudinally limiting the mounting frame are fixedly connected in the filter box, each sliding bar is arranged obliquely, so that the included angle between the mounting frame and the horizontal plane is 5°-15°, and the included angle between the power plate and the mounting frame is 40°-50°.

[0015] Preferably, the number of the filter assemblies is three, the three filter assemblies sequentially divide the filtered interior from top to bottom into a first filter cavity, a second filter cavity, a third filter cavity and a fourth filter cavity, the interior of the mounting block is provided with a first through slot connecting the second filter cavity and the third filter cavity, and the interior of the mounting block is provided with a second through slot connecting the third filter cavity and the fourth filter cavity.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] 1. The present application has a cleaning frame, which can separate the reactants into solid and liquid by arranging a filter membrane on the lower side, and then facilitate the anaerobic decomposition of anaerobic microorganisms.

[0018] 2. The present application has a discharge part connected to a biogas collector, which can clean the filter membrane on the lower side of the filter frame by backwashing the biogas collected in the biogas collector, and then reduce the frequency of manual cleaning, and facilitate the operation and use of the staff. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the filter mechanism in the present application.

[0020] Figure 2 It is a schematic diagram of the explosion structure of the present application.

[0021] Figure 3 It is a schematic diagram of the position of the mounting block in the present application.

[0022] Figure 4 It is a schematic diagram of the structure of the first through slot in the present application.

[0023] Figure 5 It is a schematic diagram of the structure of the filter assembly in the present application.

[0024] Figure 6 It is a schematic diagram of the structure of the power board in the present application.

[0025] Figure 7 It is a schematic diagram of the overall working process of the present application Figure 3 It is a partial enlarged schematic diagram of the A area in the present application.

[0026] Figure 8 It is a schematic diagram of the overall working process of the present application

[0027] In the diagram: 1. Feeding section; 2. Filtering section; 3. Discharge section; 4. Filter box; 5. Filter assembly; 6. Mounting frame; 7. Filter rack; 8. Cleaning brush; 9. First disassembly plate; 10. First fixing plate; 11. Second fixing plate; 12. Disassembly groove; 13. Second disassembly plate; 14. Box cover; 15. Snap-fit ​​block; 16. Snap-fit ​​groove; 17. Third fixing plate; 18. Fourth fixing plate; 19. Filter membrane; 20. Cleaning rack; 21. Sliding groove; 22. Sliding block; 23. Power plate; 24. Fixing bolt; 25. Mounting block; 26. Mounting groove; 27. Connecting block; 28. Sliding strip; 33. First passage groove; 34. Second passage groove. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The following is in conjunction with the appendix Figure 1 to Figure 8 The specific embodiments of the present invention will be described in further detail below.

[0030] Depend on Figure 1 to Figure 8 As shown, the present invention includes an anaerobic digestion reactor for storing anaerobic microorganisms. The feed end of the anaerobic digestion reactor is connected to a mixing tank, and the discharge end of the anaerobic digestion reactor is connected to a filtration mechanism for solid-liquid separation. In order to facilitate backwashing of the filter frame 7, the filtration mechanism includes, from bottom to top, an interconnected feed section 1, a filter section 2, and a discharge section 3. A filter box 4 is detachably connected inside the filter section 2. Multiple filter components 5 are detachably connected inside the filter box 4. Each filter component 5 includes a mounting frame 6, a filter frame 7, and a cleaning brush 8 for cleaning the bottom of the filter frame 7. The filter frame 7 and the cleaning brush 8 are detachably connected inside the mounting frame 6. A filter membrane 19 is fixedly connected to the bottom of the filter frame 7, and the upper side of the cleaning brush 8 abuts against the lower side of the filter membrane 19.

[0031] It should be noted that the present invention also includes:

[0032] The biogas collector is communicated with the upper part of the anaerobic digestion reactor, and is used for collecting the biogas generated in the anaerobic digestion reaction process. In addition, the biogas collector is further connected with an output pipeline, one end of the output pipeline is communicated with the upper side of the discharge part 3, and the middle part of the output pipeline is provided with a gas flow meter and an electromagnetic valve, which are used for controlling and metering the gas output from the biogas collector to the filtering part 2. The side of the feeding part 1 is further communicated with a biogas circulation pipeline, one end of the biogas circulation pipeline is connected with the biogas collector, and the biogas circulation pipeline is used as a pipeline for biogas backflow, and is used for collecting the biogas after backwashing.

[0033] A membrane pressure gauge is connected to the upper side of the discharge part 3, and is used for detecting the filtering pressure of the filtering frame 7.

[0034] In addition, the inside of the batching tank is provided with a magnetic stirrer for stirring the reactants and a cooling water pipe for cooling the reactants. The batching tank and the anaerobic digestion reactor are connected through a feeding pump for conveying the reactants.

[0035] The inside of the anaerobic digestion reactor is provided with a stirrer driven by a motor, and the stirrer drives the reactants to be conveyed upward to the lower side of the feeding part 1 through an auger or a discharge pump, and continuously applies pressure upward to carry out filtering of solid-liquid separation through the filtering membrane 19.

[0036] It should be noted that in the embodiment, the anaerobic digestion reactor, the filtering mechanism and the batching tank are integrated, and jointly constitute an integrated anaerobic digestion membrane bioreactor, that is, the three are integrated in the same device, which can effectively increase the integration of the device, and further facilitate the assembly and movement of the integrated anaerobic digestion membrane bioreactor.

[0037] Specifically, in the present embodiment, the ingredient tank is 50L, and the cooling water pipe is used to keep the mixture in the ingredient tank at 3-5℃. The TS concentration of the mixture is kept constant (about 50 g / L), and the kitchen waste: sludge ratio is 1:0, 3:1, 2:1, 1:1, and 0:1. After mixing in the ingredient tank, the mixture is pumped into the anaerobic digestion reactor. The anaerobic digestion reactor is 50L, with an effective volume of 45L. The reactor is equipped with an internal stirrer and a heating system on the outer wall to keep the temperature in the reactor at 40-50℃. The solid retention time (SRT) is 30, 40, and 50d, and the hydraulic retention time (HRT) is 8, 10, and 12h. The mixed digestion liquid is pumped into the feeding part 1 through the lifting pump, and the filter membrane 19 is an ultrafiltration membrane made of PVDF membrane with a membrane area of 0.2m2 and a pore size of about 0.1μm. The membrane flux is 7L / m2·h. The mixed digestion liquid passing through the filtering part 2 enters the water outlet device through the discharge part 3, and the digestion liquid not passing through the membrane assembly is returned to the anaerobic digestion reactor. The biogas produced by the anaerobic digestion reactor is collected in the biogas collector. The membrane pressure gauge monitors the pressure of the membrane assembly in real time, and when it reaches 30kPa, the biogas output switch is started. The gas enters from the upper part of the membrane assembly, and the membrane assembly is backwashed. The biogas is re-collected in the biogas collector. The backwashing biogas jet speed is 74m / h, and the time is 3 minutes.

[0038] Further, as shown in Figure 1 to Figure 8 In order to facilitate the staff to disassemble and overhaul, a first disassembly plate 9 is arranged on the rear side of the filtering part 2, and the first disassembly plate 9 and the filtering part 2 are connected by bolts. A first fixed plate 10 is fixedly connected to the lower side of the filtering part 2, and a second fixed plate 11 is fixedly connected to the upper side of the feeding part 1. The first fixed plate 10 and the second fixed plate 11 are detachably connected.

[0039] In use, the first disassembly plate 9 is used to seal the rear side of the filtering part 2, and a sealing ring is arranged between the first disassembly plate 9 and the filtering part 2. Fixed holes are arranged on the first fixed plate 10 and the second fixed plate 11, and the first fixed plate 10 and the second fixed plate 11 are detachably connected by bolts to connect the feeding part 1 and the filtering part 2.

[0040] Further, as shown in Figure 1 to Figure 8 In order to facilitate the staff to thoroughly clean the inside of the filter box 4, a plurality of disassembly grooves 12 are arranged on the left and right sides of the filter box 4. A second disassembly plate 13 is detachably connected in each disassembly groove 12. A box cover 14 is detachably connected to the rear side of the filter box 4. The rear side of each second disassembly plate 13 is fixedly connected to the front side of the box cover 14. A clamping block 15 is fixedly connected to one side of each second disassembly plate 13 close to the disassembly groove 12. A clamping groove 16 is arranged in each disassembly groove 12. The clamping block 15 and the clamping groove 16 cooperate to form a structure for detachably connecting the second disassembly plate 13 and the filter box 4.

[0041] In use, the box cover 14 is detachably connected to the rear side of the filter box 4 through the cooperation of the clamping block 15 and the clamping groove 16. It should be understood that the second detachable plate 13 is made of plastic and has a certain elasticity, which can be elastically deformed.

[0042] Further, as shown in Figure 1 to Figure 8 In order to facilitate the pipeline connection of different reaction processes, a third fixed plate 17 is fixedly connected to the upper side of the filter part 2, and a fourth fixed plate 18 is fixedly connected to the lower side of the discharge part 3. The third fixed plate 17 and the fourth fixed plate 18 are detachably connected.

[0043] It should be noted that the upper side of the discharge part 3 is provided with a backflush pipe for connecting the gas outlet end of the biogas collector, and an outlet pipe for outputting mixed digestate.

[0044] In use, the filter part 2 and the discharge part 3 are connected through the third fixed plate 17 and the fourth fixed plate 18. The third fixed plate 17 and the fourth fixed plate 18 are both provided with bolt holes, and are detachably connected by bolts.

[0045] Further, as shown in Figure 1 to Figure 8 In order to automatically clean the filter membrane 19, a cleaning frame 20 is detachably connected to the lower side of the mounting frame 6. The cleaning frame 20 is internally provided with two sliding grooves 21. Each sliding groove 21 is internally slidably connected with a sliding block 22. The lower side of the cleaning brush 8 is fixedly connected with a power plate 23. The left and right sides of the power plate 23 are respectively fixedly connected with corresponding sliding blocks 22.

[0046] The inside of the filter box 4 is fixedly connected with a plurality of sliding bars 28 for longitudinally limiting the mounting frame 6. Each sliding bar 28 is inclinedly arranged, so that the included angle between the mounting frame 6 and the horizontal plane is 5°-15°, and the included angle between the power plate 23 and the mounting frame 6 is 40°-50°. Specifically, the power plate 23 is forwardly inclined, so that the lower side of the filter membrane 19 is under high pressure when filtering the reactant. At this time, the reactant moves upward, which pushes the power plate 23 to move backward, so that the power plate 23 drives the cleaning brush to be located at the last side of the mounting frame 6. When backflushing biogas, the gas moves downward to push the power plate 23 to move forward, thereby driving the cleaning brush to move forward to wipe the lower side of the filter membrane 19, preliminarily cleaning the accumulated reactant.

[0047] In use, since the power plate 23 and the mounting frame 6 are inclinedly arranged, the power plate 23 can be driven to move backward or forward when the material (reactant or biogas) moves upward or downward, thereby driving the cleaning brush to move forward or backward, and cleaning the lower side of the filter membrane 19 by the cleaning brush.

[0048] Further, as shown in Figure 1 to Figure 8 In order to facilitate the disassembly of the device as a whole, the upper side of the filter frame 7 is provided with a plurality of fixing bolts 24, and the lower side of each fixing bolt 24 is screwed with the mounting frame 6 through the filter frame 7.

[0049] In use, the mounting frame 6 and the filter frame 7 can be fixedly connected through the fixing bolt 24.

[0050] Further, as shown in Figure 1 to Figure 8 In order to facilitate the connection of the plurality of mounting frames 6, the inside of the filter box 4 is fixedly connected with an installation block 25, the rear side of the installation block 25 is provided with an installation slot 26 corresponding to the mounting frame 6, and the front side of each mounting frame 6 is fixedly connected with a connecting block 27 matched with the installation slot 26.

[0051] In use, each mounting frame 6 is arranged between the corresponding sliding bars 28, and when the mounting frame 6 moves forward to the position, the connecting block 27 and the installation slot 26 are matched, so that the position of the mounting frame 6 is fixed.

[0052] Further, as shown in Comparison Project In order to facilitate the discharge of the reaction after backwashing, the number of filter assemblies 5 is three, and the inside of the filter is divided into first, second, third and fourth filter cavities from top to bottom, the inside of the installation block 25 is provided with a first through slot 33 connecting the second and third filter cavities, and the inside of the installation block 25 is provided with a second through slot 34 connecting the third and fourth filter cavities, and the inside of the first and second through slots 33 and 34 is provided with a one-way valve, so that the biogas and the reaction can only move downward through the first and second through slots 33 and 34, that is, the biogas and the reaction can only enter the third filter cavity from the second filter cavity and enter the fourth filter cavity from the third filter cavity.

[0053] It should be understood that when the biogas is backwashed at high pressure, the inner diameter of the first and second through slots 33 and 34 is small, which is only used for downward conveying of the reaction blocked by the lower side of the filter membrane 19, which causes less loss to the biogas pressure, and still brings appropriate pressure difference between the upper and lower sides of each filter membrane 19, so as to backwash and clean the blockage of the filter membrane 19.

[0054] In use, by setting the first and second through slots 33 and 34, the accumulated substances on the lower side of different filter membranes 19 can be discharged in sequence, so as to prolong the cleaning time.

[0055] The present application has the advantages of novel structure, ingenious design, simple and convenient operation, effective reverse cleaning of the filter frame 7, convenient disassembly and maintenance for the staff, thorough cleaning of the inside of the filter box 4, convenient pipeline connection for different reaction processes, automatic cleaning of the filter membrane 19, convenient disassembly of the whole device, and convenient discharge of the reaction product after backwashing.

[0056] In addition, the application integrates anaerobic digestion technology, membrane bioreactor technology and intelligent control system through the integrated anaerobic digestion membrane bioreactor, and is used for new sewage treatment and resource recovery. The biogas high-pressure backwash is arranged, and the carbon source in the gas reenters the anaerobic digestion reactor during the backwashing process. The filter membrane 19 can be cleaned, the sludge crushing rate can be improved, the organic matter degradation can be accelerated, the carbon source utilization rate can be effectively improved, the methane production can be improved, and thus the carbon source utilization rate is very high, the carbon is fully used, the digestion rate and treatment efficiency are improved. In addition, the control system is arranged in the application, the membrane pressure gauge connected with the control system is arranged, the system monitors the reactor state in real time through the online sensor. The control system can optimize the timing and intensity of backwashing and chemical cleaning according to the transmembrane pressure difference (TMP) change, reduce the energy consumption and membrane loss while ensuring the membrane flux, and ensure the sustainability of the treatment rate. The comparison with the traditional process is as follows:

[0057] Traditional Anaerobic Process Integrated Anaerobic Digestion Membrane Bioreactor Competitive Advantage Carbon Source Utilization Rate Lower, part of carbon source lost with effluent Extremely high, carbon source maximized conversion into biogas High energy recovery rate, low operating cost Digestion Rate / Stability Slower, vulnerable to impact, unstable Fast and extremely stable, strong impact load resistance High treatment efficiency, effluent quality is good and stable Integration / Automatic Multiple units, large footprint, rely on manual High integration, small footprint, fully automatic intelligent operation Save land and labor, easy to deploy modularly Final Output Biogas, unstable effluent, a large amount of sludge High-quality biogas, reusable effluent, reduced and stable sludge A real resource factory, win-win for the environment and the economy ​

[0058] Therefore, the application represents the core direction of the transformation of sewage treatment from “energy consumption type” to “energy production type” and “resource recycling type”, and is particularly suitable for the collaborative anaerobic digestion of high-concentration organic industrial wastewater (food, brewing, pharmaceuticals, etc.), kitchen garbage leachate and municipal sludge, and has great market potential and environmental benefits.

[0059] Although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. An integrated anaerobic digestion membrane bioreactor, comprising an anaerobic digestion reactor for storing anaerobic microorganisms, a feed tank connected to the feed end of the anaerobic digestion reactor, and a filtration mechanism for solid-liquid separation connected to the discharge end of the anaerobic digestion reactor, characterized in that: The filtration mechanism includes, from bottom to top, a feeding section (1), a filtering section (2), and a discharging section (3) that are interconnected. The filtering section (2) has a filter box (4) that is detachably connected inside. The filter box (4) has multiple filter components (5) that are detachably connected inside. Each filter component (5) includes a mounting frame (6), a filter frame (7), and a cleaning brush (8) for cleaning the bottom of the filter frame (7). The filter frame (7) and the cleaning brush (8) are detachably connected inside the mounting frame (6).

2. The integrated anaerobic digestion membrane bioreactor according to claim 1, characterized in that: The filter section (2) has a first disassembly plate (9) on its rear side. The first disassembly plate (9) is connected to the filter section (2) by bolts. The filter section (2) has a first fixing plate (10) fixedly connected to its lower side. The feed section (1) has a second fixing plate (11) fixedly connected to its upper side. The first fixing plate (10) and the second fixing plate (11) are detachably connected.

3. The integrated anaerobic digestion membrane bioreactor according to claim 1, characterized in that: The filter box (4) has multiple disassembly slots (12) on its left and right sides. Each disassembly slot (12) has a second disassembly plate (13) that can be detachably connected inside. The filter box (4) has a cover (14) that can be detachably connected to its rear side. The rear side of each second disassembly plate (13) is fixedly connected to the front side of the cover (14). Each second disassembly plate (13) has a snap-fit ​​block (15) fixedly connected to the side of the disassembly slot (12). Each disassembly slot (12) has a snap-fit ​​groove (16) inside. The snap-fit ​​block (15) and the snap-fit ​​groove (16) cooperate to form a structure in which the second disassembly plate (13) and the filter box (4) can be detachably connected.

4. The integrated anaerobic digestion membrane bioreactor according to claim 1, characterized in that: The upper side of the filter section (2) is fixedly connected to a third fixing plate (17), and the lower side of the discharge section (3) is fixedly connected to a fourth fixing plate (18). The third fixing plate (17) and the fourth fixing plate (18) are detachably connected.

5. The integrated anaerobic digestion membrane bioreactor according to claim 1, characterized in that: The bottom of the filter frame (7) is fixedly connected to a filter membrane (19), and the upper side of the cleaning brush (8) abuts against the lower side of the filter membrane (19).

6. The integrated anaerobic digestion membrane bioreactor according to claim 1, characterized in that: The filter frame (7) has a cleaning frame (20) that is detachably connected to the mounting frame (6) on its lower side. The cleaning frame (20) has two sliding grooves (21) inside, and each sliding groove (21) has a sliding block (22) slidably connected inside. The cleaning brush (8) has a power plate (23) fixedly connected to its lower side. The left and right sides of the power plate (23) are fixedly connected to the corresponding sliding blocks (22).

7. The integrated anaerobic digestion membrane bioreactor according to claim 1, characterized in that: The filter frame (7) is provided with multiple fixing bolts (24) on its upper side. The lower side of each fixing bolt (24) passes through the filter frame (7) and is threadedly connected to the mounting frame (6).

8. The integrated anaerobic digestion membrane bioreactor according to claim 1, characterized in that: The filter box (4) is fixedly connected to the interior of the filter box (4). The rear side of the filter box (25) is provided with a mounting groove (26) that corresponds to the mounting frame (6). The front side of each mounting frame (6) is fixedly connected with a connecting block (27) that is compatible with the mounting groove (26).

9. An integrated anaerobic digestion membrane bioreactor according to claim 6, characterized in that: The filter box (4) is internally fixedly connected with multiple sliding bars (28) for longitudinally limiting the mounting frame (6). Each sliding bar (28) is inclined so that the angle between the mounting frame (6) and the horizontal plane is 5°-15° and the angle between the power plate (23) and the mounting frame (6) is 40°-50°.

10. An integrated anaerobic digestion membrane bioreactor according to claim 8, characterized in that: The number of filter components (5) is three. The three filter components (5) divide the interior of the filter into a first filter chamber, a second filter chamber, a third filter chamber and a fourth filter chamber from top to bottom. The mounting block (25) has a first through groove (33) connecting the second filter chamber and the third filter chamber. The mounting block (25) has a second through groove (34) connecting the third filter chamber and the fourth filter chamber.

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