CN117303591A

CN117303591A - Pressure membrane bioreactor

Info

Publication number: CN117303591A
Application number: CN202311544031.9A
Authority: CN
Inventors: 陈儒建; 王兴; 梁霄
Original assignee: Chongqing Haofengji Technology Co ltd
Current assignee: Chongqing Haofengji Technology Co ltd
Priority date: 2023-11-20
Filing date: 2023-11-20
Publication date: 2023-12-29

Abstract

The invention discloses a pressure membrane bioreactor, and belongs to the technical field of sewage treatment. The utility model provides a pressure membrane bioreactor, includes first mounting box, and settling chamber, anaerobism room, good oxygen room, membrane separation room and water storage room have been seted up in proper order to the drainage end from the water inlet end to first mounting box, still includes: the mounting box is fixedly connected in the membrane separation chamber; the filter module is rotatably arranged on the side wall of the installation box; the mounting box is internally and fixedly connected with a mounting plate, the mounting plate is internally and fixedly connected with a partition plate, and the partition plate divides the mounting plate into an air cavity for exhausting air to the outside of the mounting plate and a water cavity for feeding water into the mounting plate; a driving unit disposed in the mounting box; according to the invention, the flat membrane is reversely flushed by utilizing air, so that the filter holes of the flat membrane are prevented from being blocked by pollutants, the automatic cleaning is realized, the frequency of stopping the machine to replace the flat membrane is further reduced, the sewage treatment efficiency is improved, and the maintenance cost is reduced.

Description

Pressure membrane bioreactor

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a pressure membrane bioreactor.

Background

A pressure Membrane Bioreactor (MBR) is an advanced sewage treatment technology, combining a bioreactor and a membrane separation technology. In an MBR system, a bioreactor (usually an aerobic or anaerobic bioreactor) and a membrane separation unit (usually an ultrafiltration membrane or a microfiltration membrane) are combined together for sewage treatment and solid-liquid separation, and when sewage is treated, the sewage firstly enters the bioreactor, wherein microorganisms convert organic matters and pollutants such as nitrogen, phosphorus and the like into organisms and gases through biodegradation; the treated water passes through a membrane separation unit, and micro-pores of the membrane can effectively intercept suspended solids, bacteria, viruses and other microorganisms, and meanwhile clear water passes through to realize solid-liquid separation; after membrane separation, the clear water becomes high-quality clear water which can be directly recovered or discharged.

In the prior art, the membranes adopted by the pressure membrane bioreactor are generally hollow fiber membranes and flat membranes, wherein the flat membranes are required to be frequently stopped for sewage treatment in the sewage treatment process, and are manually taken down for replacement, and then the dirty flat membranes are cleaned, so that the frequent replacement and cleaning of the flat membranes in the sewage treatment process can lead to the increase of the system downtime, the increase of the maintenance cost can reduce the operation stability and the treatment efficiency of the system, and in addition, the maintenance and replacement of the flat membranes are required to consume a large amount of manpower and material resources, so that the operation cost of the system is increased, and the pressure membrane bioreactor is designed for reducing the replacement cleaning frequency of the flat membranes.

Disclosure of Invention

The invention provides a pressure membrane bioreactor for solving the problem of high frequency of filter membrane replacement in the prior art.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the utility model provides a pressure membrane bioreactor, includes first install bin, first install bin has seted up settling chamber, anaerobism room, good oxygen room, membrane separation room and water storage room in proper order from the inlet end to the drainage end, install the chamber has been seted up to the bottom of first install bin, be provided with the mud portion of taking out that is used for extracting mud in the install chamber, still include: the mounting box is fixedly connected in the membrane separation chamber; the filter module is rotatably arranged on the side wall of the installation box; the mounting box is internally and fixedly connected with a mounting disc, the mounting disc is internally and fixedly connected with a partition plate, and the partition plate divides the mounting disc into an air cavity for exhausting air to the outside of the mounting disc and a water cavity for feeding water into the mounting disc; a drive unit disposed within the mounting box.

Preferably, the filter module comprises a swivel, the mounting groove is formed in the side wall of the mounting box, the swivel is rotationally connected in the mounting groove, the toothed ring is fixedly connected to the side wall of the swivel, the tray frame is detachably connected to the side wall of the toothed ring, and the flat plate film is fixedly connected to the tray frame.

Preferably, the driving unit comprises an air charging part for supplying air into the air cavity, a water pumping part for pumping water in the water cavity and a transmission part for driving the filtering membrane group to rotate.

In order to facilitate the extraction of water in the water cavity, preferably, the pumping part comprises a motor fixedly connected in a mounting box, the output end of the motor is fixedly connected with a third rotating shaft, a first crankshaft is fixedly connected in the third rotating shaft, a first piston cylinder is fixedly connected in the mounting box, a first piston plate is slidably connected in the first piston cylinder, a first crank is rotatably connected on the first piston plate, the first crank is rotatably connected with the first crankshaft, the output end of the first piston cylinder is communicated with the water storage chamber through a first pipe group, the input end of the first piston cylinder is fixedly connected with a second pipeline, one end of the second pipeline, which is far away from the first piston cylinder, is communicated with the water cavity, and the output end and the input end of the first piston cylinder are both provided with one-way valves.

In order to facilitate air supply to the air cavity, preferably, the air charging part comprises a second piston cylinder fixedly connected in the mounting box, a second piston plate is connected in a sliding manner in the second piston cylinder, a second crank is connected to the second piston plate in a rotating manner, a second crankshaft is fixedly connected to the third rotating shaft, the second crankshaft is connected with the second crank in a rotating manner, an eighth pipeline extending out of the first mounting box is fixedly connected to the input end of the second piston cylinder, a second pipe group communicated with the air cavity is fixedly connected to the output end of the second piston cylinder, and one-way valves are arranged at the output end and the input end of the second piston cylinder.

In order to facilitate the rotation of the flat plate film, preferably, the transmission part comprises a first impeller box fixedly connected in the mounting box, a second rotating shaft is rotatably connected to the first impeller box, the second rotating shaft extends into the first impeller box and is fixedly connected with a first blade plate, the second pipe group comprises a third pipeline for connecting the air inlet end of the first impeller box with the output end of the second piston cylinder and a fourth pipeline for connecting the air cavity with the air outlet end of the first impeller box, a first rotating shaft is rotatably connected in the mounting box, a transmission gear meshed with a toothed ring is fixedly connected to the first rotating shaft, and the first rotating shaft and the second rotating shaft synchronously rotate through a belt pulley group.

In order to increase the sedimentation speed, preferably, a fourth rotating shaft is rotatably connected in the sedimentation chamber, and a stirring rod is fixedly connected on the fourth rotating shaft; the top fixedly connected with second installation case of first installation case, the rotation is connected with the fifth pivot in the second installation case, the synchronous rotation of taper gear group is passed through with the fourth pivot to the fifth pivot, fixedly connected with second impeller case in the second installation case, the fifth pivot extends to in the second impeller case and fixedly connected with second impeller, first nest of tubes includes first pipeline and seventh pipeline, the both ends of first pipeline link to each other with the output of first piston cylinder and the input of second impeller case respectively, the both ends of seventh pipeline link to each other with second impeller case and water storage room respectively.

In order to facilitate water pumping, the anaerobic treatment device is characterized by further comprising a third piston cylinder fixedly connected to the inner wall of the top of the second installation box, a third piston plate is connected to the third piston cylinder in a sliding mode, a third crank is connected to the third piston plate in a rotating mode, a third crankshaft is fixedly connected to the fifth rotating shaft, the third crankshaft is connected with the third crank in a rotating mode, one-way valves are arranged at the input end and the output end of the third piston cylinder, a fifth pipeline extending into the anaerobic chamber is fixedly connected to the input end of the third piston cylinder, and a sixth pipeline extending into the aerobic chamber is fixedly connected to the output end of the third piston cylinder.

In order to improve the oxygen content, preferably, the indoor fixedly connected with shunt tubes of good oxygen, fixedly connected with jet head on the shunt tubes, the input fixedly connected with trachea of shunt tubes, the trachea links to each other with the membrane separation room, the trachea is located the one end of membrane separation room and is provided with waterproof ventilated membrane.

In order to facilitate sludge extraction, preferably, the sludge extraction part comprises a sludge pump fixedly connected in the installation cavity, the input end of the sludge pump is fixedly connected with a sludge pipe, and the sludge pipe is respectively connected with the bottoms of the sedimentation chamber, the anaerobic chamber, the aerobic chamber and the membrane separation chamber through a plurality of control valves.

Compared with the prior art, the invention provides a pressure membrane bioreactor, which has the following beneficial effects:

1. according to the pressure membrane bioreactor, the flat membrane is reversely flushed by utilizing air, so that the filter holes of the flat membrane are prevented from being blocked by pollutants, automatic cleaning is realized, the frequency of stopping the machine and replacing the flat membrane is further reduced, the sewage treatment efficiency is improved, and the maintenance cost is reduced;

2. according to the pressure membrane bioreactor, the flat membrane is driven to rotate by utilizing gas, so that the flat membrane rotates, the cleaned position of the flat membrane is continuously replaced, the time for adsorbing pollutants on the flat membrane is reduced, the difficulty of cleaning the pollutants from the flat membrane is reduced, and the cleaning effect of the flat membrane is improved;

3. according to the pressure membrane bioreactor, air through the backwashing flat membrane enters the membrane separation chamber and the aerobic chamber, so that the oxygen content in the two chambers is improved, the living environment of aerobic microorganisms is improved, and the sewage treatment efficiency and the sewage treatment effect are further improved.

Drawings

FIG. 1 is a schematic perspective view of a pressure membrane bioreactor according to the present invention;

FIG. 2 is a front cross-sectional view of a pressure membrane bioreactor according to the present invention;

FIG. 3 is a schematic diagram of a pressure membrane bioreactor mounting box according to the present invention;

FIG. 4 is a schematic diagram of an explosion structure of a pressure membrane bioreactor mounting box according to the present invention;

FIG. 5 is a schematic diagram of an explosion structure of a pressure membrane bioreactor mounting box according to the present invention;

FIG. 6 is a schematic view of a pressure membrane bioreactor mounting plate according to the present invention;

fig. 7 is a cross-sectional view of a pressure membrane bioreactor mounting plate according to the present invention.

In the figure: 1. a first mounting box; 2. a precipitation chamber; 3. an anaerobic chamber; 4. an aerobic chamber; 5. a membrane separation chamber; 6. a water storage chamber; 7. a second mounting box; 8. a mounting box; 9. a mounting plate; 10. a swivel; 11. a toothed ring; 12. a tray rack; 13. a flat membrane; 14. a partition plate; 15. an air cavity; 16. a water chamber; 17. a negative ion generator; 18. a first rotating shaft; 19. a transmission gear; 20. a first impeller housing; 21. a second rotating shaft; 22. a first louver; 23. a motor; 24. a third rotating shaft; 241. a first crankshaft; 25. a first piston cylinder; 26. a first piston plate; 27. a first crank; 28. a first pipe; 29. a second pipe; 30. a second piston cylinder; 31. a second crankshaft; 32. a second crank; 33. a second piston plate; 34. a third conduit; 35. a fourth conduit; 36. a fourth rotating shaft; 37. a stirring rod; 38. a bevel gear set; 39. a fifth rotating shaft; 40. a third crankshaft; 41. a third piston cylinder; 42. a third piston plate; 43. a third crank; 44. a fifth pipe; 45. a sixth conduit; 46. a second impeller housing; 47. a seventh pipe; 48. a second louver; 49. an air pipe; 50. a shunt; 51. a jet head; 52. a first drain hole; 53. a second drain hole; 54. a sludge pump; 55. a sludge pipe; 56. a control valve; 57. and an eighth pipeline.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Examples:

referring to fig. 1 to 7, a pressure membrane bioreactor comprises a first mounting box 1, wherein a settling chamber 2, an anaerobic chamber 3, an aerobic chamber 4, a membrane separation chamber 5 and a water storage chamber 6 are sequentially arranged from a water inlet end to a water outlet end of the first mounting box 1, a first water outlet 52 is arranged between the settling chamber 2 and the anaerobic chamber 3, sewage in the settling chamber 2 and the anaerobic chamber 3 enters the anaerobic chamber 3, a second water outlet 53 is arranged between the aerobic chamber 4 and the membrane separation chamber 5, water in the aerobic chamber 4 enters the membrane separation chamber 5 (the water outlet is not required to be arranged, the sewage is transported by a water pump), a mounting cavity is arranged at the bottom of the first mounting box 1, and a mud pumping part for pumping the mud is arranged in the mounting cavity, and the pressure membrane bioreactor further comprises: a mounting box 8 fixedly connected in the membrane separation chamber 5; the filter module is rotatably arranged on the side wall of the mounting box 8; the mounting box 8 is fixedly connected with a mounting disc 9, the mounting disc 9 is internally and fixedly connected with a partition plate 14, and the partition plate 14 divides the interior of the mounting disc 9 into an air cavity 15 for exhausting air to the outside of the mounting disc 9 and a water cavity 16 for feeding water into the mounting disc 9; a drive unit disposed within the mounting box 8.

When the air chamber 15 is used, the driving unit is used for supplying air to the air chamber 15 and absorbing filtered water in the water chamber 16, in the process, the driving unit drives the filtering membrane group to rotate, along with continuous air supply to the air chamber 15, the pressure in the air chamber 15 is greater than the pressure of sewage in the membrane separation chamber 5, air in the air chamber 15 is sprayed out through the filtering membrane group corresponding to the position of the air chamber 15, and the air is discharged into the membrane separation chamber 5 through a gap of the filtering membrane group, so that the oxygen content in the membrane separation chamber 5 is increased while the filtering membrane group is backflushed and cleaned, the living environment of microorganisms in the membrane separation chamber 5 is improved, and the sewage treatment efficiency is improved.

Referring to fig. 4 and 5, the filter module comprises a swivel 10, a mounting groove is formed in the side wall of a mounting box 8, the swivel 10 is rotatably connected in the mounting groove, a toothed ring 11 is fixedly connected to the side wall of the swivel 10, a tray frame 12 is detachably connected to the side wall of the toothed ring 11, and a flat membrane 13 is fixedly connected to the tray frame 12.

The tray frame 12 is fixed on the toothed ring 11 through bolts, and the tray frame 12 extends out from outlets on two sides of the mounting box 8, so that convenience in disassembling the flat membrane 13 is improved, and the flat membrane 13 is replaced conveniently.

Furthermore, the separation plate 14 is fixedly connected with the negative ion generator 17, the negative ion generator 17 is arranged in the air cavity 15, and in the sewage treatment process, the negative ion generator 17 generates negative ions, and the negative ions enter the membrane separation chamber 5 along with the air flow, so that suspended matters in the membrane separation chamber 5 are promoted to be aggregated, the volume of suspended particles is increased, and the filtering effect of the flat membrane 13 is further improved.

Referring to fig. 2 to 5, the driving unit includes an air charging part for supplying air into the air chamber 15, a water pumping part for pumping water inside the water chamber 16, and a driving part for driving the filtering membrane group to rotate.

Referring to fig. 2 and 4, the pumping part includes a motor 23 fixedly connected in the installation box 8, an output end of the motor 23 is fixedly connected with a third rotating shaft 24, a first crankshaft 241 is fixedly connected on the third rotating shaft 24, a first piston cylinder 25 is fixedly connected in the installation box 8, a first piston plate 26 is slidably connected in the first piston cylinder 25, a first crank 27 is rotatably connected on the first piston plate 26, the first crank 27 is rotatably connected with the first crankshaft 241, an output end of the first piston cylinder 25 is communicated with the water storage chamber 6 through a first pipe group, an input end of the first piston cylinder 25 is fixedly connected with a second pipeline 29, one end of the second pipeline 29 far away from the first piston cylinder 25 is communicated with the water cavity 16, and one-way valves are arranged at the output end and the input end of the first piston cylinder 25.

Starting the motor 23, driving the third rotating shaft 24 to rotate by the motor 23, driving the first crankshaft 241 to rotate by the third rotating shaft 24, driving the first piston plate 26 to reciprocate in the first piston cylinder 25 by the first crankshaft 27, so that positive pressure and negative pressure are generated inside the first piston cylinder 25 in a reciprocating manner, the negative pressure is conducted into the water cavity 16 by the second pipeline 29, filtered water in the water cavity 16 is sucked into the first piston cylinder 25, and the positive pressure is used for storing the water in the first piston cylinder 25 through the first pipe group to be transmitted into the water storage chamber 6, and the water in the water storage chamber 6 can be discharged through the water pipe on the side wall of the first mounting box 1.

Referring to fig. 2 and 4, the air charging part includes a second piston cylinder 30 fixedly connected in the installation box 8, a second piston plate 33 is slidably connected in the second piston cylinder 30, a second crank 32 is rotatably connected on the second piston plate 33, a second crank 31 is fixedly connected on the third rotating shaft 24, the second crank 31 is rotatably connected with the second crank 32, an eighth pipe 57 extending to the outside of the first installation box 1 is fixedly connected with an input end of the second piston cylinder 30, a second pipe group communicated with the air cavity 15 is fixedly connected with an output end of the second piston cylinder 30, and check valves are respectively arranged at the output end and the input end of the second piston cylinder 30.

When the motor 23 drives the third rotating shaft 24 to rotate, the third rotating shaft 24 drives the second crankshaft 31 to rotate, the second crankshaft 31 drives the second piston plate 33 to slide reciprocally in the second piston cylinder 30 through the second crank 32, so that positive pressure and negative pressure are generated reciprocally in the second piston cylinder 30, the negative pressure sucks air outside the first mounting box 1 through the eighth pipeline 57, then the air is discharged into the air cavity 15 through the second pipe group, the air pressure in the air cavity 15 is increased, and the flat membrane 13 is cleaned.

Referring to fig. 2 and 4, the transmission part includes a first impeller housing 20 fixedly connected to the inside of the installation box 8, a second rotating shaft 21 is rotatably connected to the first impeller housing 20, the second rotating shaft 21 extends into the first impeller housing 20 and is fixedly connected to a first vane 22, the second tube group includes a third tube 34 for connecting an air inlet end of the first impeller housing 20 with an output end of the second piston cylinder 30 and a fourth tube 35 for connecting the air chamber 15 with an air outlet end of the first impeller housing 20, the installation box 8 is rotatably connected to the first rotating shaft 18, a transmission gear 19 engaged with the toothed ring 11 is fixedly connected to the first rotating shaft 18, and the first rotating shaft 18 and the second rotating shaft 21 are synchronously rotated through the pulley group.

When the gas exhausted from the second piston cylinder 30 flows in the second pipe group, the gas passes through the first impeller box 20 and drives the first blade plate 22 to rotate while passing through, the first blade plate 22 drives the second rotating shaft 21 to rotate, the second rotating shaft 21 drives the first rotating shaft 18 to rotate through the pulley group, and the first rotating shaft 18 drives the toothed ring 11 to rotate through the transmission gear 19, so that the flat plate membrane 13 is driven to rotate, and the flat plate membrane 13 is cleaned comprehensively.

Furthermore, the outer wall of the first impeller box 20 is fixedly connected with a reduction gearbox, the input end of the reduction gearbox is fixedly connected with the second rotating shaft 21, and the output shaft of the reduction gearbox synchronously rotates with the first rotating shaft 18 through the belt pulley group, so that the rotating speed of the flat membrane 13 can be reduced, and the stability of the flat membrane 13 is further improved.

Referring to fig. 2, a fourth rotating shaft 36 is rotatably connected to the settling chamber 2, and a stirring rod 37 is fixedly connected to the fourth rotating shaft 36; the top of the first mounting box 1 is fixedly connected with a second mounting box 7, the second mounting box 7 is rotationally connected with a fifth rotating shaft 39, the fifth rotating shaft 39 and the fourth rotating shaft 36 synchronously rotate through a bevel gear set 38, a second impeller box 46 is fixedly connected in the second mounting box 7, the fifth rotating shaft 39 extends into the second impeller box 46 and is fixedly connected with a second impeller plate 48, the first pipe group comprises a first pipe 28 and a seventh pipe 47, two ends of the first pipe 28 are respectively connected with an output end of the first piston cylinder 25 and an input end of the second impeller box 46, and two ends of the seventh pipe 47 are respectively connected with the second impeller box 46 and the water storage chamber 6.

The water discharged by the first piston cylinder 25 enters the second impeller box 46 through the first pipeline 28 to drive the second impeller plate 48 to rotate, the second impeller plate 48 drives the fifth rotating shaft 39 to rotate, the fifth rotating shaft 39 drives the fourth rotating shaft 36 to rotate through the bevel gear group 38, the fourth rotating shaft 36 drives the stirring rod 37 to rotate, the sewage in the sedimentation chamber 2 is centrifugally separated, the sedimentation efficiency and the sedimentation effect of the sludge are improved, suspended matters in the sewage are reduced, and therefore the filtration efficiency of the flat membrane 13 is improved.

Referring to fig. 2, the anaerobic reactor further comprises a third piston cylinder 41 fixedly connected to the inner wall of the top of the second installation box 7, a third piston plate 42 is slidably connected to the third piston cylinder 41, a third crank 43 is rotatably connected to the third piston plate 42, a third crankshaft 40 is fixedly connected to the fifth rotating shaft 39, the third crankshaft 40 is rotatably connected to the third crank 43, check valves are arranged at the input end and the output end of the third piston cylinder 41, a fifth pipeline 44 extending into the anaerobic chamber 3 is fixedly connected to the input end of the third piston cylinder 41, and a sixth pipeline 45 extending into the aerobic chamber 4 is fixedly connected to the output end of the third piston cylinder 41.

The fifth rotating shaft 39 rotates and drives the third crankshaft 40 to rotate, the third crankshaft 40 drives the third piston plate 42 to slide reciprocally in the third piston cylinder 41 through the third crank 43, so that positive pressure and negative pressure are generated reciprocally in the third piston cylinder 41, the negative pressure sucks sewage in the anaerobic chamber 3 through the sixth pipeline 45, and the positive pressure sends the sewage into the aerobic chamber 4 to realize sewage transmission.

The third piston cylinder 41 and its corresponding piston plate, crankshaft, and crank may be provided with a plurality of groups for feeding water in the settling chamber 2 into the anaerobic chamber 3, feeding water in the anaerobic chamber 3 into the aerobic chamber 4, and feeding water in the aerobic chamber 4 into the membrane separation chamber 5, respectively.

Referring to fig. 2, a shunt tube 50 is fixedly connected in the aerobic chamber 4, a jet head 51 is fixedly connected on the shunt tube 50, an air pipe 49 is fixedly connected to the input end of the shunt tube 50, the air pipe 49 is connected with the membrane separation chamber 5, and a waterproof and breathable membrane is arranged at one end of the air pipe 49, which is positioned in the membrane separation chamber 5.

Air in the membrane separation chamber 5 enters the air pipe 49 through the waterproof breathable membrane, is discharged into the shunt pipe 50 through the air pipe 49, is sprayed out through the air spraying head 51 through the shunt pipe 50, and is aerated in the aerobic chamber 4, so that the living environment of aerobic bacteria is improved, and the sewage treatment effect is promoted.

Referring to fig. 2, the sludge pumping part includes a sludge pump 54 fixedly connected in the installation cavity, and a sludge pipe 55 is fixedly connected to an input end of the sludge pump 54, and the sludge pipe 55 is connected to bottoms of the settling chamber 2, the anaerobic chamber 3, the aerobic chamber 4 and the membrane separation chamber 5 through a plurality of control valves 56, respectively.

The sludge pump 54 is started, the corresponding control valve 56 is opened, and the sludge pump 54 sucks out the sludge in the corresponding chamber.

In summary, the reactor utilizes the flat membrane 13 to filter sewage and utilizes air to reversely flush the flat membrane 13, thereby preventing the filter holes of the flat membrane 13 from being blocked by pollutants, realizing automatic cleaning and further reducing the frequency of stopping and replacing the flat membrane 13; on the other hand, the gas is utilized to push the flat membrane 13 to rotate, so that the flat membrane 13 rotates, the cleaned position of the flat membrane 13 is continuously replaced, the time for adsorbing pollutants on the flat membrane 13 is reduced, the difficulty in cleaning the pollutants from the flat membrane 13 is reduced, and the cleaning effect on the flat membrane 13 is improved; on the other hand, the air of the back flushing flat plate membrane 13 enters the membrane separation chamber 5 and the aerobic chamber 4, so that the oxygen content in the two chambers is improved, the living environment of aerobic microorganisms is improved, and the sewage treatment efficiency and the sewage treatment effect are further improved.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims

1. The utility model provides a pressure membrane bioreactor, includes first install bin (1), precipitation chamber (2), anaerobism room (3), good oxygen room (4), membrane separation room (5) and water storage room (6) have been seted up in proper order to the drainage end from the inlet end to first install bin (1), install the chamber in the bottom of first install bin (1), be provided with the suction portion that is used for extracting mud in the install chamber, its characterized in that still includes:

a mounting box (8) fixedly connected in the membrane separation chamber (5);

the filter module is rotatably arranged on the side wall of the installation box (8);

the mounting box (8) is internally and fixedly connected with a mounting disc (9), the mounting disc (9) is internally and fixedly connected with a partition plate (14), and the partition plate (14) divides the interior of the mounting disc (9) into an air cavity (15) for exhausting air to the outside of the mounting disc (9) and a water cavity (16) for feeding water into the mounting disc (9);

a drive unit arranged in the mounting box (8).

2. The pressure membrane bioreactor according to claim 1, wherein the filtration module comprises a swivel (10), a mounting groove is formed in the side wall of the mounting box (8), the swivel (10) is rotatably connected in the mounting groove, a toothed ring (11) is fixedly connected to the side wall of the swivel (10), a tray frame (12) is detachably connected to the side wall of the toothed ring (11), and a flat membrane (13) is fixedly connected to the tray frame (12).

3. A pressure membrane bioreactor according to claim 1, characterized in that the driving unit comprises an air charging part for supplying air into the air chamber (15), a water pumping part for pumping water inside the water chamber (16), and a transmission part for driving the filtering membrane group to rotate.

4. A pressure membrane bioreactor according to claim 3, characterized in that the pumping part comprises a motor (23) fixedly connected in a mounting box (8), the output end of the motor (23) is fixedly connected with a third rotating shaft (24), a first crankshaft (241) is fixedly connected to the third rotating shaft (24), a first piston cylinder (25) is fixedly connected to the mounting box (8), a first piston plate (26) is slidably connected to the first piston cylinder (25), a first crank (27) is rotatably connected to the first piston plate (26), the output end of the first piston cylinder (25) is communicated with the water storage chamber (6) through a first pipe group, one end of the second pipe (29) away from the first piston cylinder (25) is communicated with the water cavity (16), and the output end of the first piston cylinder (25) is provided with a one-way valve.

5. A pressure membrane bioreactor according to claim 4, characterized in that the air charging part comprises a second piston cylinder (30) fixedly connected in the mounting box (8), a second piston plate (33) is slidably connected in the second piston cylinder (30), a second crank (32) is rotatably connected on the second piston plate (33), a second crank (31) is fixedly connected on the third rotating shaft (24), the second crank (31) is rotatably connected with the second crank (32), an eighth pipeline (57) extending out of the first mounting box (1) is fixedly connected to the input end of the second piston cylinder (30), a second pipe group communicated with the air cavity (15) is fixedly connected to the output end and the input end of the second piston cylinder (30), and one-way valves are arranged on the output end and the input end of the second piston cylinder (30).

6. A pressure membrane bioreactor according to claim 5, characterized in that the transmission part comprises a first impeller box (20) fixedly connected in the installation box (8), a second rotating shaft (21) is rotatably connected on the first impeller box (20), the second rotating shaft (21) extends into the first impeller box (20) and is fixedly connected with a first blade plate (22), the second tube group comprises a third pipeline (34) for connecting the air inlet end of the first impeller box (20) and the output end of the second piston cylinder (30) and a fourth pipeline (35) for connecting the air cavity (15) and the air outlet end of the first impeller box (20), a first rotating shaft (18) is rotatably connected on the installation box (8), a transmission gear (19) meshed with the toothed ring (11) is fixedly connected on the first rotating shaft (18), and the first rotating shaft (18) and the second rotating shaft (21) synchronously rotate through a pulley group.

7. A pressure membrane bioreactor according to claim 4, characterized in that a fourth rotating shaft (36) is rotatably connected to the sedimentation chamber (2), a stirring rod (37) is fixedly connected to the fourth rotating shaft (36), and the stirring rod (37); the top fixedly connected with second mounting box (7) of first mounting box (1), the rotation of second mounting box (7) is connected with fifth pivot (39), synchronous rotation is passed through bevel gear group (38) with fourth pivot (36) in fifth pivot (39), fixedly connected with second impeller case (46) in second mounting box (7), fifth pivot (39) extend to in second impeller case (46) and fixedly connected with second impeller plate (48), first nest of tubes includes first pipeline (28) and seventh pipeline (47), the both ends of first pipeline (28) link to each other with the output of first piston tube (25) and the input of second impeller case (46) respectively, the both ends of seventh pipeline (47) link to each other with second impeller case (46) and water storage chamber (6) respectively.

8. A pressure membrane bioreactor according to claim 7, further comprising a third piston cylinder (41) fixedly connected to the top inner wall of the second mounting box (7), a third piston plate (42) is slidably connected to the third piston cylinder (41), a third crank (43) is rotatably connected to the third piston plate (42), a third crank (40) is fixedly connected to the fifth rotating shaft (39), the third crank (40) is rotatably connected to the third crank (43), check valves are respectively arranged at the input end and the output end of the third piston cylinder (41), a fifth pipe (44) extending into the anaerobic chamber (3) is fixedly connected to the input end of the third piston cylinder (41), and a sixth pipe (45) extending into the aerobic chamber (4) is fixedly connected to the output end of the third piston cylinder (41).

9. The pressure membrane bioreactor according to claim 1, wherein a shunt tube (50) is fixedly connected in the aerobic chamber (4), a jet head (51) is fixedly connected on the shunt tube (50), an air pipe (49) is fixedly connected with the input end of the shunt tube (50), the air pipe (49) is connected with the membrane separation chamber (5), and a waterproof and breathable membrane is arranged at one end of the air pipe (49) located in the membrane separation chamber (5).

10. A pressure membrane bioreactor according to claim 1, characterized in that the sludge pumping part comprises a sludge pump (54) fixedly connected in the installation cavity, the input end of the sludge pump (54) is fixedly connected with a sludge pipe (55), and the sludge pipe (55) is respectively connected with the bottoms of the sedimentation chamber (2), the anaerobic chamber (3), the aerobic chamber (4) and the membrane separation chamber (5) through a plurality of control valves (56).