A mbr system for kitchen biogas slurry treatment and a method of using the same

Abstract

The present application belongs to kitchen garbage treatment technical field, especially a kind of kitchen biogas liquid treatment with MBR system and its using method, in existing technology, when hollow fiber membrane is cleaned, it is more troublesome, and the shortcomings that it is not convenient to clean the solid waste filtered out, its MBR system includes bottom plate, the top of bottom plate is fixedly installed with multiple sedimentation tanks at equal intervals, the top opening of sedimentation tank is provided with cover plate for plugging sedimentation tank, liquid injection pipe is fixedly installed on the bottom inner wall of one side of sedimentation tank, in the present application, when kitchen garbage is filtered, the MBR hollow fiber membrane tube used can be back-flushed after being used for a period of time, so as to achieve the purpose of automatic flushing of MBR hollow fiber membrane tube, so the filtration efficiency will not be reduced, and manual cleaning is not required, and the solid waste cleaned can be easily removed from the sedimentation tank, with good use convenience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen garbage treatment, and in particular relates to an MBR system for kitchen biogas slurry treatment and a use method thereof. BACKGROUND

[0002] With the development of urbanization, China has vigorously promoted the field of domestic waste management, and the number of garbage classification and combined garbage incineration projects is increasing. During the treatment of domestic waste, especially organic waste, a large amount of leachate, filter press liquid, fermentation liquid and other wastewater is generated during the sorting, pressing and fermentation of organic waste. The wastewater is difficult to treat and has high operating costs due to high organic concentration, high oil content, high salt content and various impurities.

[0003] The traditional leachate treatment project of the biochemical MBR of the domestic waste incineration project mainly uses tubular ultrafiltration membranes, and the tubular ultrafiltration membranes mainly use 8mm or 5mm membrane channels. Large flow rate cross-flow technology is used to prevent membrane clogging to achieve the purpose of filtering and treating kitchen waste.

[0004] However, the MBR filtration system used for filtering kitchen waste still has the following shortcomings in actual application:

[0005] 1. When using MBR immersed hollow fiber membranes, they need to be cleaned after a period of use to prevent kitchen waste from adhering to the immersed hollow fiber membranes, which reduces the flow rate. However, the current cleaning method requires maintenance personnel to manually clean the immersed hollow fiber membranes, which is cumbersome. This cleaning method inevitably reduces the efficiency of kitchen waste treatment.

[0006] 2. After treating kitchen waste, the solid waste filtered out needs to be cleaned. The current filtration device cannot quickly discharge the solid waste, making it difficult to collect the solid waste.

[0007] To solve the above problems, the present application provides an MBR system for kitchen biogas slurry treatment and a use method thereof. SUMMARY

[0008] The present application provides an MBR system for kitchen biogas slurry treatment and a use method thereof, which solves the problem of cleaning the hollow fiber membranes in the prior art and the inconvenience of cleaning the solid waste filtered out.

[0009] The present application provides the following technical solutions:

[0010] The application discloses a kind of MBR system for kitchen biogas liquid treatment, including bottom plate, the top of bottom plate is fixedly installed with multiple sedimentation tanks at equal intervals, the top of sedimentation tank is provided with cover plate for plugging sedimentation tank, the bottom inner wall of one side of sedimentation tank is fixedly installed with liquid injection pipe, one end of multiple liquid injection pipes extends to the outside of multiple sedimentation tanks respectively and is fixedly installed with same flow divider, the inner wall of one side of flow divider is fixedly installed with external connection pipe, one end of external connection pipe extends to the outside of flow divider, external connection pipe is used to be connected with external kitchen waste water pipeline, and the MBR system further includes:

[0011] Multiple filtering mechanisms are connected with the corresponding cover plates, the bottom of the filtering mechanism extends into the corresponding sedimentation tank and is sealed to the inner wall of the sedimentation tank, and the filtering mechanism is used for fine filtration of kitchen waste water.

[0012] Multiple backwashing mechanisms are installed on the top of the corresponding cover plates, the backwashing mechanism is connected with the corresponding filtering mechanism, and the water stored in the backwashing mechanism is used for reverse flushing of the filtering mechanism.

[0013] The water suction mechanism is installed on the top of the bottom plate, and the water suction mechanism is connected with the multiple backwashing mechanisms, respectively. The water suction mechanism is used to provide stable suction force for the kitchen waste water, so that the kitchen waste water can be extracted after the filtering mechanism and the backwashing mechanism.

[0014] The power mechanism is installed on the top of the bottom plate, and the power mechanism is connected with the top of the multiple cover plates, respectively. The top of the power mechanism extends above the multiple backwashing mechanisms and is connected with the top end of the multiple backwashing mechanisms, respectively. The power mechanism is used to provide power for the multiple backwashing mechanisms, so that the multiple backwashing mechanisms work simultaneously.

[0015] In a possible design, the filtering mechanism includes a support pipe penetrating through the cover plate and fixedly connected with the cover plate. A bottom disc is arranged in the sedimentation tank. A plurality of MBR hollow fiber membrane tubes are fixedly installed on the top of the bottom disc at equal intervals. An upper disc is fixedly installed at the top end of the plurality of MBR hollow fiber membrane tubes. A plurality of flow holes are formed in the upper disc at equal intervals and are connected with the plurality of MBR hollow fiber membrane tubes, respectively. A water collecting cover is fixedly installed on the top of the upper disc and covers the plurality of flow holes. The bottom end of the support pipe extends into the water collecting cover, and the support pipe is fixedly connected with the top inner wall of the water collecting cover.

[0016] In a possible design, a scraper is fixedly sleeved on the bottom disc and tightly abuts against the inner wall of the sedimentation tank.

[0017] In a possible design, a plurality of fixed screws are fixedly installed on the top of the bottom disc at equal intervals. The plurality of fixed screws all penetrate through the upper disc. Fixed nuts are threadedly connected with the fixed screws, and the fixed nuts are used to stably connect the fixed screws with the upper disc.

[0018] In a possible design, the backwashing mechanism comprises a flow box fixedly installed on the top of the cover plate, the top of the support pipe extends into the flow box and is fixedly connected with the inner wall of the bottom of the flow box, a plurality of sealing rods are fixedly installed on the inner wall of the bottom of the flow box at equal intervals, a push plate is sealingly and slidably connected in the flow box, a plurality of conveying holes are formed in the push plate at equal intervals, the conveying holes are matched with the corresponding sealing rods, a connecting pipe is fixedly installed on the inner wall of the top of the flow box, the top end of the connecting pipe extends above the flow box and is fixedly installed with a connecting box, the connecting box is connected with the water suction mechanism, a transmission rod is fixedly installed on the top center of the push plate, the top end of the transmission rod penetrates through the inner wall of the top of the connecting pipe and the connecting box and extends above the connecting box, the transmission rod is sealingly and slidably connected with the inner wall of the top of the connecting box, and the transmission rod is connected with the power mechanism.

[0019] In a possible design, the water suction mechanism comprises a water pump fixedly installed on one side of the top of the bottom plate, a soft tube is fixedly installed on the water suction end of the water pump, one end of the soft tube is fixedly installed with a conveying pipe, and a plurality of installation pipes are fixedly installed on the inner wall of one side of the conveying pipe at equal intervals.

[0020] In a possible design, the power mechanism comprises four electric push rods fixedly installed on the top of the bottom plate, the output shafts of the four electric push rods are fixedly installed with the same installation frame, the installation frame is fixedly connected with the top of the plurality of cover plates, and a pressure assembly is installed on the top of the installation frame and connected with the top end of the plurality of transmission rods.

[0021] In a possible design, the pressure assembly comprises two limiting tubes fixedly installed on the top of the installation frame in a symmetrical manner, a limiting rod is slidably connected in the limiting tube, the top end of each of the two limiting rods extends above the two limiting tubes and is fixedly installed with the same fixed plate, the two fixed plates are fixedly installed with the same installation plate, the installation plate is fixedly connected with the top end of the plurality of transmission rods, four limiting frames are fixedly installed on the top of the installation plate, the same moving frame is slidably connected on the four limiting frames, a plurality of pull rods are rotatably connected on the two sides of the moving frame at equal intervals, the bottom end of each of the plurality of pull rods is rotatably connected with the top of the installation frame, a driving motor is fixedly installed on the top of the installation plate, a lead screw is fixedly installed on the output shaft of the driving motor, a fixed frame is fixedly installed on the top of the moving frame, a transmission nut is fixedly installed on one side of the fixed frame, the lead screw penetrates through the fixed frame and the transmission nut and is threadedly connected with the transmission nut, one end of the lead screw is rotatably connected with the top of the installation plate, a compression spring is sleeved on the limiting rod above the limiting tube, and the top and bottom end of the compression spring are fixedly connected with the bottom of the fixed plate and the top end of the limiting tube, respectively.

[0022] In a possible design, the top side of the bottom plate is fixedly provided with an air blower, an air outlet of the air blower is fixedly provided with an air pipe, a plurality of exhaust pipes are fixedly arranged on the inner wall of one side of the air pipe at equal intervals, and one end of each exhaust pipe extends into the corresponding sedimentation tank and is fixedly connected with the other side of the bottom wall of the sedimentation tank.

[0023] The use method of the MBR system for kitchen biogas liquid treatment comprises the following steps:

[0024] S1, first, connect the pipeline for conveying kitchen liquid waste with the external pipe, convey the kitchen liquid waste into the distribution box, and then disperse and convey the kitchen liquid waste into the plurality of sedimentation tanks through the plurality of liquid injection pipes;

[0025] S2, supply air into the air pipe by starting the air blower, and then disperse and convey the air into the plurality of sedimentation tanks through the plurality of exhaust pipes, so as to realize the aeration treatment of the kitchen sewage;

[0026] S3, start the water pump, the generated suction force can generate suction force on the plurality of connection boxes, at this time, the suction force can be generated on the plurality of MBR hollow fiber membrane tubes through the passage formed by the connecting pipe, the flow box, the supporting pipe and the water collecting cover, so that the sewage in the kitchen liquid waste in the sedimentation tank is sucked into the MBR hollow fiber membrane tube, and the sewage is filtered by the MBR hollow fiber membrane tube;

[0027] S4, after the MBR hollow fiber membrane tube is used for a period of time, cleaning is needed, at this time, the driving motor is started to drive the lead screw to rotate, which can drive the plurality of transmission rods to move downward and push the corresponding push plates to move downward, after the sealing rod blocks the conveying hole, the filtered water cannot be conveyed upward through the conveying hole, at this time, when the push plate is pushed downward, the water can be provided with downward thrust, so as to achieve the effect of increasing the pressure, so that the filtered water flows reversely, that is, the filtered water flows reversely from the MBR hollow fiber membrane tube into the sedimentation tank, so as to realize the reverse flushing of the MBR hollow fiber membrane tube;

[0028] S5, start the four electric push rods to drive the mounting frame to move longitudinally, at this time, when the mounting frame moves upward, the plurality of MBR hollow fiber membrane tubes and the scraper can move upward out of the sedimentation tank, so as to clean the filtered solid kitchen waste.

[0029] It should be understood that the above general description and the following detailed description are only exemplary and cannot limit the present application.

[0030] In the application, through the setting of the filtering mechanism, when the water suction mechanism is running, the plurality of backwashing mechanisms can generate suction force, at this time, the kitchen wastewater placed in the sedimentation tank can be sucked into the MBR hollow fiber membrane tube under the action of the suction force, and the kitchen wastewater is filtered by the MBR hollow fiber membrane tube, and then the filtered water is sucked into the water collecting cover, and then is sucked into the backwashing mechanism through the support pipe, so as to be sucked out by the water suction mechanism;

[0031] In the application, through the setting of the backwashing mechanism, the filtered water can first flow into the flow box, and then can flow upward through the plurality of conveying holes on the push plate, and then can be sucked out by the water suction mechanism through the connecting pipe and the connecting box. When it is necessary to backwash the MBR hollow fiber membrane tube, the power mechanism is started to drive the plurality of transmission rods to move downward, at this time, the push plate is pushed downward, and after the conveying holes are blocked by the blocking rod, the push plate is pushed downward, which can provide downward thrust to the water, so as to achieve the effect of increasing pressure, so that the filtered water flows reversely from the MBR hollow fiber membrane tube into the sedimentation tank, so as to backwash the MBR hollow fiber membrane tube, and achieve the effect of cleaning the MBR hollow fiber membrane tube.

[0032] In the application, through the setting of the water suction mechanism, the suction force generated by the water pump can be generated to the plurality of connecting boxes. After the sewage is filtered and sucked into the connecting box, it can be conveyed to the conveying pipe through the installation pipe, and then conveyed through the hose and the water pump, so as to discharge the filtered sewage.

[0033] In the application, through the setting of the power mechanism, the four electric push rods are started to drive the mounting frame to move longitudinally, at this time, when the mounting frame moves upward, the plurality of MBR hollow fiber membrane tubes and the scraper are moved out of the sedimentation tank, so as to clean the filtered solid kitchen garbage. The driving motor is started to drive the lead screw to rotate, at this time, under the threaded transmission action of the transmission nut, the fixed frame can be driven to move transversely, when the fixed frame moves, the moving frame can be driven to move transversely, so as to generate tension to the plurality of pull rods, so that the pull rods rotate in the horizontal direction, at this time, the moving frame can be driven to move downward, that is, the mounting plate can be driven to move downward, that is, the plurality of transmission rods can be driven to move downward, and the corresponding push plate can be pushed downward.

[0034] In the application, when the kitchen garbage is filtered, the MBR hollow fiber membrane tube used can be backwashed after being used for a period of time, so as to achieve the purpose of automatically washing the MBR hollow fiber membrane tube, so as to not reduce the filtering efficiency, and manual cleaning is not required, and the solid garbage cleaned can be conveniently removed from the sedimentation tank, and has good use convenience. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 A first perspective structure three-dimensional schematic view of the MBR system for treating kitchen biogas slurry provided by the embodiment of the present application is shown in FIG. 1.

[0036] Figure 2 A second perspective structure three-dimensional schematic view of the MBR system for treating kitchen biogas slurry provided by the embodiment of the present application is shown in FIG. 2.

[0037] Figure 3 A main cross-sectional structure schematic view of the MBR system for treating kitchen biogas slurry provided by the embodiment of the present application is shown in FIG. 3.

[0038] Figure 4 A schematic view of the A part structure of the MBR system for treating kitchen biogas slurry provided by the embodiment of the present application is shown in FIG. 4. Figure 3

[0039] Figure 5 A cross-sectional structure three-dimensional schematic view of the sedimentation tank of the MBR system for treating kitchen biogas slurry provided by the embodiment of the present application is shown in FIG. 5.

[0040] Figure 6 A three-dimensional schematic view of the connection structure of the bottom plate, the plurality of MBR hollow fiber membrane tubes, the upper plate, the flow box and the connection box of the MBR system for treating kitchen biogas slurry provided by the embodiment of the present application is shown in FIG. 6.

[0041] Figure 7 A three-dimensional schematic view of the connection structure of the bottom plate, the plurality of fixed screws, the upper plate and the water collecting cover of the MBR system for treating kitchen biogas slurry provided by the embodiment of the present application is shown in FIG. 7.

[0042] Figure 8 A third perspective structure three-dimensional schematic view of the MBR system for treating kitchen biogas slurry provided by the embodiment of the present application is shown in FIG. 8.

[0043] Figure 9 A schematic view of the B part structure of the MBR system for treating kitchen biogas slurry provided by the embodiment of the present application is shown in FIG. 9. Figure 8

[0044] Figure 10 A three-dimensional schematic view of the connection structure of the plurality of electric push rods, the mounting frame, the plurality of pull rods, the mounting plate, the moving frame, the driving motor, the lead screw and the fixing frame of the MBR system for treating kitchen biogas slurry provided by the embodiment of the present application is shown in FIG. 10.

[0045] Reference signs:

[0046] ​​1, bottom plate; 2, sedimentation tank; 3, cover plate; 4, liquid injection pipe; 5, flow distribution box; 6, external connection pipe; 7, bottom disc; 8, scraper; 9, MBR hollow fiber membrane tube; 10, upper disc; 11, fixing screw; 12, fixing nut; 13, flow hole; 14, water collecting cover; 15, support pipe; 16, flow box; 17, connecting pipe; 18, connecting box; 19, transmission rod; 20, push plate; 21, conveying hole; 22, sealing rod; 23, mounting pipe; 24, conveying pipe; 25, water pump; 26, hose; 27, electric push rod; 28, mounting bracket; 29, limiting pipe; 30, limiting rod; 31, fixed plate; 32, compression spring; 33, mounting plate; 34, moving bracket; 35, limiting bracket; 36, pull rod; 37, drive motor; 38, lead screw; 39, fixed bracket; 40, transmission nut; 41, air blower; 42, air pipe; 43, exhaust pipe. DETAILED DESCRIPTION

[0047] The embodiments of the present application will be described below with reference to the accompanying drawings.

[0048] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connection", "installation" should be understood broadly, for example, "connection" can be detachable connection, or can be non-detachable connection; can be direct connection, or can be indirect connection through intermediate medium. In addition, "communication" can be direct communication, or can be indirect communication through intermediate medium. Among them, "fixing" means connecting with each other and the relative position relationship after connection does not change. The orientation language mentioned in the embodiments of the present application, such as "inner", "outer", "top", "bottom", etc., is only the direction of the drawing, therefore, the orientation language used is to better, more clearly illustrate and understand the embodiments of the present application, and is not indicative or implied that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the embodiments of the present application.

[0049] Embodiment 1

[0050] Reference Figures 1-7The kitchen biogas slurry treatment MBR system of the embodiment comprises a bottom plate 1, a plurality of filtering mechanisms and a water suction mechanism, a plurality of sedimentation tanks 2 are fixedly installed at the top of the bottom plate 1 at equal intervals, a cover plate 3 for plugging the sedimentation tank 2 is arranged at the top opening of the sedimentation tank 2, a liquid injection pipe 4 is fixedly installed on the bottom inner wall of one side of the sedimentation tank 2, one end of each of the plurality of liquid injection pipes 4 extends to the outside of the sedimentation tank 2 and is fixedly installed with the same flow divider 5, the flow divider 5 is fixedly installed on the inner wall of one side, one end of the external connection pipe 6 extends to the outside of the flow divider 5, the external connection pipe 6 is used for connecting with the external kitchen waste water pipeline, the filtering mechanism is connected with the corresponding cover plate 3, the bottom of the filtering mechanism extends into the corresponding sedimentation tank 2 and is sealingly attached to the inner wall of the sedimentation tank 2, the filtering mechanism is used for fine filtering of the kitchen waste water, the water suction mechanism is installed on the top of the bottom plate 1, the water suction mechanism is connected with the plurality of backwashing mechanisms, the water suction mechanism is used for providing stable suction force for the kitchen waste water, so that the kitchen waste water can be sucked out after the filtering mechanism and the backwashing mechanism.

[0051] The filtering mechanism comprises a support pipe 15 penetrating through the cover plate 3 and fixedly connected with the cover plate 3, a bottom disc 7 is arranged in the sedimentation tank 2, a plurality of MBR hollow fiber membrane tubes 9 are fixedly installed on the top of the bottom disc 7 at equal intervals, the top ends of the plurality of MBR hollow fiber membrane tubes 9 are fixedly installed with the same upper disc 10, a plurality of flow holes 13 respectively communicating with the plurality of MBR hollow fiber membrane tubes 9 are arranged on the upper disc 10 at equal intervals, a water collecting cover 14 is fixedly installed on the top of the upper disc 10, the water collecting cover 14 covers the plurality of flow holes 13, the bottom end of the support pipe 15 extends into the water collecting cover 14, and the support pipe 15 is fixedly connected with the top inner wall of the water collecting cover 14; when the water suction mechanism is operated, the plurality of backwashing mechanisms can generate suction force at this time, and the kitchen wastewater placed in the sedimentation tank 2 can be sucked into the MBR hollow fiber membrane tubes 9 under the action of the suction force, the kitchen wastewater is finely filtered by the MBR hollow fiber membrane tubes 9, and then the filtered water is sucked into the water collecting cover 14, and then is sucked into the backwashing mechanism through the support pipe 15, so as to be sucked out by the water suction mechanism; the bottom disc 7 is fixedly sleeved with a scraper 8, the scraper 8 is tightly attached to the inner wall of the sedimentation tank 2, and when the power mechanism drives the plurality of cover plates 3 to move upwards, the filtering mechanism can be driven to move upwards, so that the filtering mechanism can be moved out of the sedimentation tank 2; at this time, when the scraper 8 moves upwards with the filtering mechanism, the inner wall of the sedimentation tank 2 can be scraped, so that the dirt attached to the inner wall of the sedimentation tank 2 is cleaned and falls on the scraper 8, so as to clean the solid kitchen garbage filtered out; a plurality of fixed screws 11 are fixedly installed on the top of the bottom disc 7 at equal intervals, the plurality of fixed screws 11 all penetrate through the upper disc 10, and fixed nuts 12 are threadedly connected on the fixed screws 11, the fixed nuts 12 are used for stably connecting the fixed screws 11 and the upper disc 10, the plurality of fixed screws 11 penetrate through the upper disc 10 and are fastened by the fixed nuts 12, so that the upper disc 10 and the bottom disc 7 are stably connected, and the plurality of MBR hollow fiber membrane tubes 9 are stably supported; the water suction mechanism comprises a water pump 25 fixedly installed on one side of the top of the bottom plate 1, a hose 26 fixedly installed on the water suction end of the water pump 25, a conveying pipe 24 fixedly installed on one end of the hose 26, a plurality of installation pipes 23 fixedly installed on the inner wall of one side of the conveying pipe 24 at equal intervals, and one end of each installation pipe 23 extends into a corresponding connecting box 18 and is fixedly connected with the inner wall of one side of the connecting box 18; by starting the water pump 25, the suction force generated thereby can generate suction force on the plurality of connecting boxes 18, after the sewage is filtered and sucked into the connecting boxes 18, the sewage can be conveyed into the conveying pipe 24 through the installation pipes 23, and then the filtered sewage can be discharged through the conveying of the hose 26 and the water pump 25.

[0052] Example 2

[0053] Reference Figure 1 、 Figures 3-6Based on Example 1, this embodiment further proposes multiple backwashing mechanisms for the MBR system for treating kitchen waste biogas slurry proposed in Example 1. The multiple backwashing mechanisms are respectively installed on the top of the corresponding cover plate 3. The backwashing mechanisms are connected to the corresponding filter mechanisms. The water stored in the backwashing mechanisms is used to backwash the filter mechanisms.

[0054] The backwashing mechanism includes a flow box 16 fixedly installed on the top of the cover plate 3. The top of the support pipe 15 extends into the flow box 16 and is fixedly connected to the bottom inner wall of the flow box 16. Multiple sealing rods 22 are fixedly installed at equal intervals on the bottom inner wall of the flow box 16. A push plate 20 is slidably connected inside the flow box 16. Multiple conveying holes 21 are opened at equal intervals on the push plate 20. The conveying holes 21 cooperate with the corresponding sealing rods 22. A connecting pipe 17 is fixedly installed on the top inner wall of the flow box 16. The top end of the connecting pipe 17 extends above the flow box 16 and is fixedly installed with a connecting box 18. The connecting box 18 is connected to the water suction mechanism. A transmission rod 19 is fixedly installed at the top center of the push plate 20. The top end of the transmission rod 19 passes through the connecting pipe 17 and the top inner wall of the connecting box 18 respectively and extends above the connecting box 18. The transmission rod 19 and the connecting box... The top inner wall of 18 is sealed and slidably connected. The transmission rod 19 is connected to the power mechanism. The filtered water first flows into the flow box 16, and then flows upward through multiple conveying holes 21 on the push plate 20. After that, it can be drawn out by the water suction mechanism through the connecting pipe 17 and the connecting box 18. When it is necessary to backwash the MBR hollow fiber membrane tube 9, the power mechanism can be started to push multiple transmission rods 19 downward. At this time, the push plate 20 can be pushed downward. After the conveying holes 21 are blocked by the sealing rod 22, the push plate 20 can provide downward thrust to the water when it is pushed downward, thereby achieving a pressurization effect. This causes the filtered water to flow backward and flow backward from the MBR hollow fiber membrane tube 9 into the sedimentation tank 2, thereby backwashing the MBR hollow fiber membrane tube 9 and achieving the effect of cleaning the MBR hollow fiber membrane tube 9.

[0055] Based on Example 1, this embodiment can provide a constant thrust with water pre-stored in the flow box 16 to backwash the MBR hollow fiber membrane tube 9 when cleaning is required, so as to quickly clean the MBR hollow fiber membrane tube 9.

[0056] Example 3

[0057] refer to Figure 1 , Figures 3-6The power mechanism is installed on the top of the bottom plate 1, the power mechanism is connected with the top of the plurality of cover plates 3 respectively, the top of the power mechanism extends above the plurality of backwashing mechanisms and is connected with the top end of the plurality of backwashing mechanisms respectively, and the power mechanism is used for providing power for the plurality of backwashing mechanisms to make the plurality of backwashing mechanisms work simultaneously.

[0058] The power mechanism comprises four electric push rods 27 fixedly installed on the top of the bottom plate 1, the output shafts of the four electric push rods 27 are fixedly installed with the same mounting frame 28, the mounting frame 28 is fixedly connected with the top of the plurality of cover plates 3 respectively, the top of the mounting frame 28 is installed with the pressure assembly, the pressure assembly is connected with the top end of the plurality of transmission rods 19 respectively, the mounting frame 28 is driven to move longitudinally by starting the four electric push rods 27, at this time, when the mounting frame 28 moves upward, the plurality of MBR hollow fiber membrane tubes 9 and the scraper plates 8 can be moved upward out of the sedimentation tank 2, so that the filtered solid kitchen garbage can be cleaned, the pressure assembly comprises two limiting tubes 29 fixedly installed symmetrically on the top of the mounting frame 28, a limiting rod 30 is slidably connected in the limiting tube 29, the top end of the two limiting rods 30 extends above the two limiting tubes 29 and is fixedly installed with the same fixed plate 31, the same mounting plate 33 is fixedly installed on the two fixed plates 31, the mounting plate 33 is fixedly connected with the top end of the plurality of transmission rods 19 respectively, four limiting frames 35 are fixedly installed on the top of the mounting plate 33, the same moving frame 34 is slidably connected on the four limiting frames 35, a plurality of pull rods 36 are rotatably connected on the two sides of the moving frame 34 at equal intervals, the bottom end of the plurality of pull rods 36 is rotatably connected with the top of the mounting frame 28, the top of the mounting plate 33 is fixedly installed with a drive motor 37, a lead screw 38 is fixedly installed on the output shaft of the drive motor 37, a fixed frame 39 is fixedly installed on the top of the moving frame 34, a transmission nut 40 is fixedly installed on one side of the fixed frame 39, the lead screw 38 penetrates through the fixed frame 39 and the transmission nut 40 and is threadedly connected with the transmission nut 40, one end of the lead screw 38 is rotatably connected with the top of the mounting plate 33, a compression spring 32 is sleeved on the limiting rod 30 above the limiting tube 29, the top and bottom end of the compression spring 32 is fixedly connected with the bottom of the fixed plate 31 and the top end of the limiting tube 29 respectively, the lead screw 38 is driven to rotate by starting the drive motor 37, at this time, under the thread transmission action of the transmission nut 40, the fixed frame 39 can be driven to move horizontally, when the fixed frame 39 moves, the moving frame 34 can be driven to move horizontally, so that the plurality of pull rods 36 can be pulled to rotate in the horizontal direction, at this time, the moving frame 34 can be driven to move downward, the mounting plate 33 can be driven to move downward, and the plurality of transmission rods 19 can be driven to move downward, the corresponding push plate 20 is pushed to move downward.

[0059] The embodiment can provide a constant driving force when the MBR hollow fiber membrane tube 9 needs to be cleaned, and drive multiple transmission rods 19 to move downward, so that the MBR hollow fiber membrane tube 9 can be back-flushed to achieve rapid cleaning of the MBR hollow fiber membrane tube 9.

[0060] In addition, the technical solution is further provided with a blower 41 fixedly installed on one side of the top of the bottom plate 1, an air pipe 42 is fixedly installed at the air outlet of the blower 41, a plurality of exhaust pipes 43 are fixedly installed at equal intervals on the inner wall of one side of the air pipe 42, one end of the exhaust pipe 43 extends into the corresponding sedimentation tank 2 and is fixedly connected with the other side bottom inner wall of the sedimentation tank 2, and the blower 41 is started to supply air into the air pipe 42, and then the gas is dispersed and delivered into the plurality of sedimentation tanks 2 through the plurality of exhaust pipes 43, so that the kitchen wastewater can be subjected to aeration treatment.

[0061] The application further provides a use method of the MBR system for kitchen biogas liquid treatment, which specifically comprises the following steps: S1, first, a pipe for conveying kitchen liquid waste is connected with the external pipe 6, and the kitchen liquid waste is conveyed into the distribution box 5, and then the kitchen liquid waste is dispersed and delivered into the plurality of sedimentation tanks 2 through the plurality of liquid injection pipes 4;

[0062] S2, the blower 41 is started to supply air into the air pipe 42, and then the gas is dispersed and delivered into the plurality of sedimentation tanks 2 through the plurality of exhaust pipes 43, so that the kitchen wastewater can be subjected to aeration treatment;

[0063] S3, the water pump 25 is started, and the generated suction force can generate suction force on the plurality of connection boxes 18, at this time, the suction force is generated on the plurality of MBR hollow fiber membrane tubes 9 through the passage formed by the connecting pipe 17, the flow box 16, the supporting pipe 15 and the water collecting cover 14, so that the wastewater in the kitchen liquid waste in the sedimentation tank 2 is sucked into the MBR hollow fiber membrane tube 9, and the wastewater is filtered by the MBR hollow fiber membrane tube 9;

[0064] S4, after the MBR hollow fiber membrane tube 9 is used for a period of time, cleaning is needed, at this time, the driving motor 37 is started to drive the lead screw 38 to rotate, so that the plurality of transmission rods 19 are driven to move downward, the corresponding push plate 20 is pushed to move downward, after the sealing rod 22 seals the conveying hole 21, the filtered water cannot be conveyed upward through the conveying hole 21, at this time, when the push plate 20 is pushed downward, downward thrust is provided to the water, so that the pressure is increased, the filtered water flows reversely, and the MBR hollow fiber membrane tube 9 reversely flows into the sedimentation tank 2, so that the MBR hollow fiber membrane tube 9 can be back-flushed;

[0065] S5, start four electric push rod 27 drive mounting frame 28 longitudinal movement, at this time in the mounting frame 28 upward movement, can be more than a plurality of MBR hollow fiber membrane tube 9 and the scraper 8 upward move out of the sedimentation tank 2, in order to be able to clean up the solid kitchen waste.

[0066] Working principle: first, the pipeline conveying kitchen liquid waste and external pipe 6 are connected, the kitchen liquid waste is transported to the flow box 5, then through multiple liquid injection pipe 4 can be dispersed to the kitchen liquid waste into multiple sedimentation tank 2, pre-kitchen liquid waste sedimentation treatment, at the same time, can be started by the air blower 41 can be supplied to the air pipe 42, then can be dispersed to the gas through multiple exhaust pipe 43 into multiple sedimentation tank 2, in this way can realize the kitchen sewage aeration treatment, then can start the water pump 25, the suction force generated by the multiple connection box 18 can produce suction force, at this time in the connecting pipe 17, flow box 16, support pipe 15, water collecting cover 14 can make the multiple MBR hollow fiber membrane tube 9 produce suction force, so that the kitchen liquid waste in the sedimentation tank 2 sewage is sucked into the MBR hollow fiber membrane tube 9, using MBR hollow fiber membrane tube 9 sewage filtration, then through the MBR hollow fiber membrane tube 9 delivery, at this time the filtered sewage can be transported to the water collecting cover 14, then through the support pipe 15, flow box 16, connecting pipe 17, connection box 18, installation pipe 23, conveying pipe 24 and water pump 25 to the outside, in this way can be in the kitchen liquid waste filtration, can provide constant suction force for sewage, so that the sewage filtration efficiency will not be reduced, after using MBR hollow fiber membrane tube 9 for a period of time, need to be cleaned, at this time can start the drive motor 37 drive screw 38 rotation, at this time in the thread transmission nut 40 transmission, can drive the fixed frame 39 move horizontally, when the fixed frame 39 moves, can drive the moving frame 34 move horizontally, in this way can produce tension on the multiple pull rod 36, so that the pull rod 36 rotates to the horizontal direction, at this time can drive the moving frame 34 downward, moving frame 34 downward, can make both sides of the compression spring 32 in the stress state, the compression spring 32 in the stress state can provide auxiliary thrust when the moving frame 34 upward reset, when the moving frame 34 moves downward, can drive the mounting plate 33 downward, that is, drive multiple transmission rod 19 downward, push the corresponding push plate 20 downward, after the sealing rod 22 blocks the conveying hole 21, the filtered water can not be conveyed upward by the conveying hole 21, at this time the push plate 20 pushes downward, can provide downward thrust for water, in this way can achieve the effect of pressure boost, so that the filtered water flows reversely, from the MBR hollow fiber membrane tube 9 into the sedimentation tank 2, in this way can reverse flush the MBR hollow fiber membrane tube 9, achieve the effect of cleaning the MBR hollow fiber membrane tube 9, so that the MBR hollow fiber membrane tube 9 is in a clean state, can continue to filter the sewage, after the kitchen liquid waste filtration is completed, the filtered solid waste is concentrated in the sedimentation tank 2, then four electric push rod 27 can be started to drive the mounting bracket 28 longitudinal movement, at this time in the mounting bracket 28 upward movement, can move multiple MBR hollow fiber membrane tube 9 and scraper 8 out of the sedimentation tank 2,In order to clean the filtered solid kitchen garbage.

[0067] However, as known to those skilled in the art, the working principles and wiring methods of the water pump 25, the electric push rod 27, the driving motor 37 and the air blower 41 are common, which all belong to conventional means or common general knowledge, and will not be described here again. Those skilled in the art can make any selection according to their needs or convenience.

[0068] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered by the protection scope of the present application. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An MBR system for treating kitchen waste sludge, comprising a base plate, multiple sedimentation tanks fixedly installed at equal intervals on the top of the base plate, a cover plate for sealing the top opening of each sedimentation tank, an injection pipe fixedly installed on the inner wall of one side bottom of each sedimentation tank, one end of each injection pipe extending to the outside of the multiple sedimentation tanks and fixedly installed in the same distribution box, an external connecting pipe fixedly installed on the inner wall of one side of the distribution box, one end of the external connecting pipe extending to the outside of the distribution box, the external connecting pipe being used to connect to an external kitchen wastewater pipeline, characterized in that... The MBR system also includes: Multiple filtration units are connected to corresponding cover plates. The bottom of each filtration unit extends into the corresponding sedimentation tank and is sealed to the inner wall of the sedimentation tank. The filtration units are used for fine filtration of kitchen wastewater. Multiple backwashing mechanisms are installed on the top of corresponding cover plates. The backwashing mechanisms are connected to the corresponding filter mechanisms. The water stored in the backwashing mechanisms is used to backwash the filter mechanisms. The water suction mechanism is installed on the top of the base plate and is connected to multiple backwashing mechanisms. The water suction mechanism is used to provide stable suction for kitchen wastewater, so that the kitchen wastewater can be extracted after passing through the filtration mechanism and the backwashing mechanism. The power mechanism is installed on the top of the base plate and is connected to the top of multiple cover plates. The top of the power mechanism extends above multiple backwashing mechanisms and is connected to the top of each of the multiple backwashing mechanisms. The power mechanism is used to provide power to the multiple backwashing mechanisms so that the multiple backwashing mechanisms can work simultaneously. The filtration mechanism includes a support pipe that penetrates the cover plate and is fixedly connected to the cover plate. A chassis is provided in the sedimentation tank. Multiple MBR hollow fiber membrane tubes are fixedly installed at equal intervals on the top of the chassis. The top of the multiple MBR hollow fiber membrane tubes is fixedly installed on the same upper plate. Multiple flow holes that are connected to the multiple MBR hollow fiber membrane tubes are opened at equal intervals on the upper plate. A water collection hood is fixedly installed on the top of the upper plate. The water collection hood covers the multiple flow holes. The bottom end of the support pipe extends into the water collection hood. The support pipe is fixedly connected to the top inner wall of the water collection hood. A scraper is fixedly fitted on the chassis, and the scraper is in close contact with the inner wall of the sedimentation tank; The backwashing mechanism includes a flow box fixedly installed on the top of the cover plate. The top of the support pipe extends into the flow box and is fixedly connected to the bottom inner wall of the flow box. Multiple sealing rods are fixedly installed at equal intervals on the bottom inner wall of the flow box. A push plate is slidably connected to the flow box in a sealed manner. Multiple conveying holes are opened at equal intervals on the push plate. The conveying holes cooperate with the corresponding sealing rods. A connecting pipe is fixedly installed on the top inner wall of the flow box. The top end of the connecting pipe extends to the top of the flow box and is fixedly installed with a connecting box. The connecting box is connected to the water suction mechanism. A transmission rod is fixedly installed at the top center of the push plate. The top end of the transmission rod passes through the connecting pipe and the top inner wall of the connecting box and extends to the top of the connecting box. The transmission rod is slidably connected to the top inner wall of the connecting box in a sealed manner. The transmission rod is connected to the power mechanism.

2. The MBR system for treating kitchen waste biogas slurry according to claim 1, characterized in that, Multiple fixing screws are fixedly installed at equal intervals on the top of the chassis. All fixing screws pass through the upper plate, and fixing nuts are threaded onto the fixing screws. The fixing nuts are used to stably connect the fixing screws to the upper plate.

3. The MBR system for treating kitchen waste biogas slurry according to claim 1, characterized in that, The water suction mechanism includes a water pump fixedly installed on one side of the top of the base plate. A hose is fixedly installed at the water suction end of the water pump. A delivery pipe is fixedly installed at one end of the hose. Multiple installation pipes are fixedly installed at equal intervals on one side of the inner wall of the delivery pipe. One end of the installation pipe extends into the corresponding connecting box and is fixedly connected to the inner wall of one side of the connecting box.

4. The MBR system for treating kitchen waste biogas slurry according to claim 1, characterized in that, The power mechanism includes four electric push rods fixedly installed on the top of the base plate. The output shafts of the four electric push rods are fixedly installed on the same mounting bracket. The mounting bracket is fixedly connected to the top of multiple cover plates. A pressure assembly is installed on the top of the mounting bracket. The pressure assembly is connected to the top of multiple transmission rods.

5. The MBR system for treating kitchen waste biogas slurry according to claim 4, characterized in that, The pressure assembly includes two limiting tubes symmetrically fixedly installed on the top of the mounting frame. Limiting rods are slidably connected inside the limiting tubes. The top ends of the two limiting rods extend above the two limiting tubes and are fixedly mounted on fixed plates. The same mounting plate is fixedly mounted on the two fixed plates. The mounting plates are fixedly connected to the top ends of multiple transmission rods. Four limiting frames are fixedly mounted on the top of the mounting plates. The same movable frame is slidably connected to the four limiting frames. Multiple pull rods are rotatably connected to both sides of the movable frame at equal intervals. The bottom ends of the multiple pull rods are rotatably connected to the top of the mounting frame. A drive motor is fixedly mounted on the top of the mounting plate. A lead screw is fixedly mounted on the output shaft of the drive motor. A fixed frame is fixedly mounted on the top of the movable frame. A transmission nut is fixedly mounted on one side of the fixed frame. The lead screw passes through the fixed frame and the transmission nut and is threadedly connected to the transmission nut. One end of the lead screw is rotatably connected to the top of the mounting plate. A compression spring is sleeved on the limiting rod above the limiting tube. The top and bottom ends of the compression spring are fixedly connected to the bottom of the fixed plate and the top end of the limiting tube, respectively.

6. The MBR system for treating kitchen waste biogas slurry according to claim 1, characterized in that, A blower is fixedly installed on one side of the top of the base plate. An air duct is fixedly installed at the air outlet of the blower. Multiple exhaust pipes are fixedly installed at equal intervals on one side of the inner wall of the air duct. One end of the exhaust pipe extends into the corresponding sedimentation tank and is fixedly connected to the bottom inner wall of the other side of the sedimentation tank.

7. The method of using the MBR system for treating kitchen waste biogas slurry according to any one of claims 1-6, characterized in that, Includes the following steps: S1. First, connect the pipe for conveying liquid kitchen waste to the external pipe to convey the liquid kitchen waste into the distribution box. Then, through multiple injection pipes, the liquid kitchen waste can be dispersed and conveyed into multiple sedimentation tanks. S2. By starting the blower, air can be supplied into the air duct, and then the gas can be dispersed and transported to multiple sedimentation tanks through multiple exhaust pipes, thereby realizing the aeration treatment of kitchen wastewater. S3. Start the water pump. The suction force generated can generate suction force on multiple connecting boxes. At this time, the passage formed by the connecting pipe, flow box, support pipe, and water collection cover can generate suction force on multiple MBR hollow fiber membrane tubes, so that the sewage in the kitchen waste liquid in the sedimentation tank is sucked into the MBR hollow fiber membrane tubes and the sewage is filtered by the MBR hollow fiber membrane tubes. S4. After the MBR hollow fiber membrane tube has been used for a period of time, it needs to be cleaned. At this time, the drive motor can be started to drive the lead screw to rotate, which will drive multiple transmission rods to move downward and push the corresponding push plate downward. After the sealing rod blocks the conveying hole, the filtered water can no longer be conveyed upward through the conveying hole. When the push plate is pushed downward, it can provide downward thrust to the water, thereby achieving a pressurization effect, causing the filtered water to flow in reverse and flow back from the MBR hollow fiber membrane tube into the sedimentation tank, thereby backwashing the MBR hollow fiber membrane tube. S5. Start the four electric push rods to drive the mounting frame to move longitudinally. At this time, when the mounting frame moves upward, multiple MBR hollow fiber membrane tubes and scrapers can be moved upward out of the sedimentation tank so that the filtered solid kitchen waste can be cleaned.

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