A convection-vortex type MBR membrane treatment device and a treatment process thereof

Abstract

The application belongs to the field of ultrafiltration membranes and provides a convection vortex type MBR membrane treatment device and a treatment process thereof. The device comprises a sewage tank into which sewage is poured. A top plate is arranged at the top end of the sewage tank and is fixed to the top end port of the sewage tank through two mounting plates. A water suction assembly is arranged on the top plate. The top ends of each row of membrane filaments are connected in series through a collecting pipe. A center box is arranged at the center of the top plate. The end of the collecting pipe is inserted into the center box. When the device is used, the sewage to be treated is poured into the sewage tank. The left air machine in the four side walls is turned on, and the right air machine is turned off. Thus, the air machine can form a positive vortex in the sewage tank. The sewage in the sewage tank first passes through the pinholes on the side wall of the membrane filament. The water flows along the membrane filament and is collected in the center box through the collecting pipe. The membrane filament can avoid the accumulation of silt on the surface of the membrane filament in the vortex environment, thereby realizing the function of efficient filtration.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of ultrafiltration membranes, and particularly relates to a convection vortex type MBR membrane treatment device and a treatment process thereof. BACKGROUND

[0002] With the development of industrial technology, modern ultrafiltration membrane technology is developing more and more perfect, the ultrafiltration membrane structure is a silk tube with multiple small pinholes, the ultrafiltration membrane needs to be immersed in sewage during work, and the inside of the silk tube of the ultrafiltration membrane starts negative pressure to suck clean water;

[0003] Like patent No. 201621473449.0, a cyclone type gas-water mixed ultrafiltration membrane device, comprising a filter cylinder, an aeration cylinder formed by extending downward from the lower end of the filter cylinder, and a conical water inlet cylinder with a gradually decreasing inner diameter from top to bottom formed by extending downward from the lower end of the aeration cylinder, the lower end of the aeration cylinder is in communication with the upper end of the conical water inlet cylinder, the filter cylinder is provided with a gas-water mixed ultrafiltration membrane assembly, the gas-water mixed ultrafiltration membrane assembly is in communication with the upper end of the aeration cylinder, the upper end of the filter cylinder is provided with a water outlet and a concentrated water outlet, the aeration cylinder is provided with an air inlet, and the conical water inlet cylinder is provided with a water inlet on one side. The utility model discloses a simple structure, which is suitable for treating various high-turbidity and high-suspended solids surface water sources;

[0004] The device also has defects in use, the ultrafiltration membrane of the device is static relative to sewage, and the silt in the sewage can deposit on the surface of the ultrafiltration membrane, and then the filter eyes on the ultrafiltration membrane are prone to be blocked, which affects the normal operation of the ultrafiltration membrane. SUMMARY

[0005] The present application aims at the deficiencies of the prior art, and provides a convection vortex type MBR membrane treatment device and a treatment process thereof, in use, the sewage to be treated is poured into the inside of the sewage tank, the left air machine in the four side walls is turned on, the right air machine is turned off, then the air machine can form a forward vortex in the inside of the sewage tank, the right air machine in the four side walls is turned on, the left air machine is turned off, then the air machine can form a reverse vortex in the inside of the sewage tank, the pressure pump starts negative pressure on the center box to suck water, the sewage in the inside of the sewage tank first passes through the pinholes on the membrane silk side wall, the water liquid flows along the membrane silk to the inside of the center box through the collecting pipe, the clean water liquid in the inside of the center box is pushed out of the water outlet pipe by the pressure pump, and the membrane silk can avoid silt accumulation on the surface of the membrane silk in the vortex environment, so as to solve the problems mentioned in the background art.

[0006] In order to solve the above problems, the present application provides the following technical scheme: a convection vortex type MBR membrane treatment device, comprising a sewage tank, sewage is filled in the inside of the sewage tank, a top plate is arranged at the top end of the sewage tank, the top plate is fixed at the top end port of the sewage tank through two mounting plates, and a water suction assembly is arranged on the top plate; the water suction assembly comprises six rows of wire holes on the top plate, the six rows of wire holes are arranged in a ring-shaped divergent array, a membrane wire is inserted into each wire hole, a torsion mechanism is arranged below the membrane wire, a vortex mechanism is arranged outside the sewage tank, the top end of each row of membrane wires is connected in series through a collecting pipe, a center box is arranged at the center of the top plate, the end of the collecting pipe is inserted into the inside of the center box, a pressure pump is arranged at the top end of the center box, an input pipe of the pressure pump extends into the inside of the center box, an output end of the pressure pump is provided with a water outlet pipe, and the bottom end of the membrane wire is provided with an iron ball; the vortex mechanism comprises pressure air channels on four outer side walls of the sewage tank, the pressure air channels are composed of two air pipes, the shaft centers of the two air pipes form a forty-five-degree angle with the side walls of the sewage tank respectively, an inclined channel is arranged in the inside of the air pipe, an air machine is arranged at the outer end of the inclined channel, and a one-way air valve is arranged in the inside of the inclined channel.

[0007] Further, a steel wire is embedded in the inside side wall of the membrane wire, and the diameter of the steel wire is one fourth of the thickness of the membrane wire wall.

[0008] Further, the torsion mechanism comprises a bearing at the bottom of the sewage tank, the outer ring of the bearing is fixedly connected with the inside side wall of the sewage tank, a vertical shaft is fixedly installed in the inner ring of the bearing, an electromagnetic ball is arranged at the top end of the vertical shaft, an eccentric adjusting mechanism is further arranged at the top end of the vertical shaft, and the vertical shaft is connected to a driving assembly.

[0009] Further, the driving assembly comprises a horizontal bevel gear outside the vertical shaft, a vertical bevel gear is arranged on one side of the horizontal bevel gear, the vertical bevel gear and the horizontal bevel gear are meshed with each other, a driven wheel disc is arranged on the shaft rod of the vertical bevel gear, the driven wheel disc is rotatably connected to the inside side wall of the sewage tank, a stepping motor is arranged at the top end of the sewage tank, a driving wheel disc is installed at the output end of the stepping motor, and the driving wheel disc and the driven wheel disc are connected through a belt.

[0010] Further, the eccentric adjusting mechanism comprises a hinged block at the top end of the vertical shaft, an inclined rod is rotatably arranged at the top end of the hinged block, a torsion cross column is inserted into the inside of the hinged block at the bottom of the inclined rod, a locking mechanism matched with the torsion cross column is arranged on the hinged block, a threaded head is arranged at the top end of the inclined rod, and a threaded hole matched with the threaded head is arranged on the side wall of the electromagnetic ball.

[0011] Further, the locking mechanism comprises a threaded hole on the side wall of the hinged block, a locking screw is inserted into the threaded hole, a rubber block is arranged at the end of the locking screw, and the rubber block abuts against the side wall of the torsion cross column.

[0012] Further, the eccentric adjusting mechanism comprises a pulling turntable at the top end of the vertical shaft, a guide rod is arranged at the top end of the pulling turntable, a sliding block is slidably arranged on the guide rod, a gravity magnetic ball is arranged at the top end of the sliding block, and a compression bolt is arranged on the side wall of the sliding block.

[0013] Further, a socket is arranged on the side wall of the gravity magnetic ball, and a support rod is arranged at the top end of the sliding block.

[0014] Further, the membrane filaments at the outermost side have the longest length, and the membrane filaments adjacent to the inner side are five centimeters shorter than the membrane filaments at the outer side.

[0015] Further, the method comprises the following steps:

[0016] S1. The sewage to be treated is poured into the inside of the sewage tank, the left air machine in the four side walls is turned on, the right air machine is turned off, so that the air machine can form a positive vortex in the inside of the sewage tank, the right air machine in the four side walls is turned on, the left air machine is turned off, so that the air machine can form a negative vortex in the inside of the sewage tank, the pressure pump starts to generate negative pressure on the central box to perform water absorption work, the sewage in the inside of the sewage tank first passes through the needle eye on the side wall of the membrane filament, the water liquid flows along the membrane filament and is collected into the inside of the central box through the collecting pipe, the clean water liquid in the inside of the central box is pushed out from the water outlet pipe by the pressure pump, and the membrane filament can avoid the accumulation of silt on the surface of the membrane filament in the vortex environment.

[0017] S2. The stepping motor drives the belt and the driven disc to rotate through the driving disc, the driven disc drives the vertical shaft to rotate through the bevel gear assembly, the electromagnetic ball at the top end of the vertical shaft also rotates along the annular track, the attraction of the electromagnetic ball pulls all the iron balls, so that all the membrane filaments are pulled towards the direction of the electromagnetic ball, the bottom end of the membrane filament moves along the annular track, the swinging direction of the membrane filament is opposite to the direction of the vortex, and the flow of the membrane filament relative to the sewage can be increased.

[0018] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0019] Firstly, when the device is used, the sewage to be treated is poured into the inside of the sewage tank, the left air machine in the four side walls is turned on, the right air machine is turned off, so that the air machine can form a positive vortex in the inside of the sewage tank, the right air machine in the four side walls is turned on, the left air machine is turned off, so that the air machine can form a negative vortex in the inside of the sewage tank, the pressure pump starts to generate negative pressure on the central box to perform water absorption work, the sewage in the inside of the sewage tank first passes through the needle eye on the side wall of the membrane filament, the water liquid flows along the membrane filament and is collected into the inside of the central box through the collecting pipe, the clean water liquid in the inside of the central box is pushed out from the water outlet pipe by the pressure pump, and the membrane filament can avoid the accumulation of silt on the surface of the membrane filament in the vortex environment.

[0020] Secondly, the step motor drives the driving disc to rotate the belt and the driven disc, the driven disc drives the vertical shaft to rotate through the bevel gear assembly, the electromagnetic ball at the top of the vertical shaft also rotates along the annular track, the attraction of the electromagnetic ball pulls all the iron balls, and then all the membrane filaments are pulled towards the direction of the electromagnetic ball, the bottom end of the membrane filament moves along the annular track, the swinging direction of the membrane filament is opposite to the direction of the eddy current, and the flow of the membrane filament relative to the sewage can be increased. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic view of the front view of the present application.

[0022] Figure 2 is a schematic view of the side view of the present application.

[0023] Figure 3 is a schematic view of the cross section of the present application.

[0024] Figure 4 is a schematic view of the electromagnetic ball of the present application.

[0025] Figure 5 is a schematic view of the top plate of the present application.

[0026] Figure 6 is a schematic view of the vertical shaft of the present application.

[0027] Figure 7 is a schematic view of the iron ball of the present application.

[0028] Figure 8 is a schematic view of the attractive magnetic ball of the present application.

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] sewage tank 1, air pipe 2, air machine 201, inclined channel 202, top plate 3, mounting plate 301, membrane filament 302, iron ball 303, collecting pipe 304, center box 305, pressure pump 4, water outlet pipe 401, step motor 5, driving disc 501, belt 502, driven disc 503, vertical shaft 6, bearing 601, horizontal bevel gear 602, vertical bevel gear 603, electromagnetic ball 7, inclined rod 701, hinged block 702, locking screw 703, pulling rotating disc 8, guide rod 801, sliding block 802, compression bolt 803, attractive magnetic ball 804. DETAILED DESCRIPTION

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. The articles 'a', 'an', and 'the' are used herein to refer to one or to more than one (i.e. to at least one) of the grammatical object of the article. By the use of the term 'or' it is meant that the term is used in the inclusive sense (i.e. and / or) unless a specific use is intended. The terms 'comprising', 'having', 'including', and 'containing' are to be construed open- ended, i.e. meaning 'decomprising', 'having at least', 'including at least', or 'containing at least'. All numerical values are 'about', 'approximately','reasonably','substantially' or 'comprised between' unless otherwise indicated. All ranges are 'comprised between' unless otherwise indicated. The terms 'first','second', and the like, do not denote any order, quantity, combination or

[0032] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that the embodiments described herein are merely examples from a multitude of embodiments that are of the present application. It is further expressly understood that the claims are intended to cover all the embodiments of the present application and their equivalents.

[0033] The present application provides a kind of convection vortex MBR membrane processing device, as shown in Figures 1-8 It includes sewage tank 1, the inside of sewage tank 1 is filled with sewage, the top of sewage tank 1 is provided with top plate 3, top plate 3 is fixed at the top end of sewage tank 1 by two mounting plates 301, and suction assembly is arranged on top plate 3;The suction assembly includes six rows of wire holes on top plate 3, and the six rows of wire holes are arranged in a ring-shaped divergent array, each wire hole is inserted with membrane wire 302 inside, the lower portion of membrane wire 302 is provided with a torsion mechanism, and the outer side of sewage tank 1 is provided with vortex mechanism, the top end of each row of membrane wire 302 is connected in series by manifold 304, the center of top plate 3 is provided with center box 305, and the end of manifold 304 is inserted into the inside of center box 305, the top end of center box 305 is provided with pressure pump 4, the input pipe of pressure pump 4 extends into the inside of center box 305, and the output end of pressure pump 4 is provided with water outlet pipe 401, and the bottom end of membrane wire 302 is provided with iron ball 303;The vortex mechanism includes pressure air duct on the four outer side walls of sewage tank 1, and the pressure air duct is composed of two air pipes 2, the shaft center of two air pipes 2 is respectively formed with forty-five degree angle to the side wall of sewage tank 1, the inside of air pipe 2 is provided with inclined channel 202, the outer end of inclined channel 202 is provided with air machine 201, and one-way air valve is arranged in the inside of inclined channel 202.

[0034] In the embodiment, the sewage to be treated is poured into the inside of the sewage tank 1, the left air machine 201 in the four side walls is turned on, the right air machine 201 is turned off, and then the air machine 201 can form a positive vortex in the inside of the sewage tank 1, the right air machine 201 in the four side walls is turned on, the left air machine 201 is turned off, and then the air machine 201 can form a negative vortex in the inside of the sewage tank 1, the pressure pump 4 starts to produce negative pressure to the center box 305 to perform water suction operation, the sewage in the inside of the sewage tank 1 first passes through the needle eye on the side wall of the membrane wire 302, the water liquid passes through the collecting pipe 304 to the inside of the center box 305, the pressure pump 4 extracts the clean water liquid in the inside of the center box 305 and pushes it out from the water outlet pipe 401, compared with the prior art ultrafiltration membrane device, the prior art ultrafiltration membrane device and the sewage are relatively static, and then the sundries in the sewage are easy to deposit on the surface of the ultrafiltration membrane, and the water filtering hole on the ultrafiltration membrane is blocked, the membrane wire 302 in the embodiment can avoid the accumulation of the silt on the surface of the membrane wire 302 in the vortex environment.

[0035] In the further embodiment of the present application, as shown in the figure, Figures 3-7 The inner side wall of the membrane wire 302 is embedded with a steel wire, and the diameter of the steel wire is one fourth of the wall thickness of the membrane wire 302.

[0036] In the embodiment, the steel wire in the inside of the membrane wire 302 can increase the toughness of the membrane wire 302, and prevent the membrane wire 302 from being broken.

[0037] In the further embodiment of the present application, as shown in the figure, Figures 3-7 The twisting mechanism includes a bearing 601 at the bottom of the sewage tank 1, the outer ring of the bearing 601 is fixedly connected with the inner side wall of the sewage tank 1, the inner ring of the bearing 601 is fixedly installed with a vertical shaft 6, the top end of the vertical shaft 6 is provided with an electromagnetic ball 7, and the top end of the vertical shaft 6 is also provided with an eccentric adjusting mechanism, and the vertical shaft 6 is connected to a driving assembly.

[0038] In the embodiment, in the process of rotating, the attractive force of the electromagnetic ball 7 can pull all the iron balls 303, and then all the membrane wires 302 are pulled towards the direction of the electromagnetic ball 7, the bottom end of the membrane wire 302 moves along the annular track, the swinging direction of the membrane wire 302 is opposite to the direction of the vortex, the flow of the membrane wire 302 relative to the sewage can be increased, and then the silt on the surface of the membrane wire 302 can quickly separate under the condition of the vortex.

[0039] In the further embodiment of the present application, as shown in the figure, Figures 1-4As shown in the figure, the driving assembly comprises horizontal bevel gears 602 outside the vertical shaft 6, one side of the horizontal bevel gears 602 is provided with vertical bevel gears 603, the vertical bevel gears 603 and the horizontal bevel gears 602 are in mesh with each other, the shaft rod of the vertical bevel gears 603 is provided with a driven disc 503, the driven disc 503 is rotatably connected to the inner side wall of the sewage tank 1, the top end of the sewage tank 1 is provided with a stepping motor 5, the output end of the stepping motor 5 is provided with a driving disc 501, and the driving disc 501 and the driven disc 503 are connected through a belt 502.

[0040] In the embodiment, the stepping motor 5 drives the belt 502 and the driven disc 503 to rotate through the driving disc 501, the driven disc 503 drives the vertical shaft 6 to rotate through the bevel gear assembly, and the stepping motor 5 indirectly provides the vertical shaft 6 with a torsional power.

[0041] In further embodiments of the present application, as shown in the figure, Figures 1-4 The eccentric adjusting mechanism comprises a hinged block 702 at the top end of the vertical shaft 6, the top end of the hinged block 702 is rotatably provided with an inclined rod 701, the bottom of the inclined rod 701 is provided with a torsional cross column inserted into the hinged block 702, the hinged block 702 is provided with a locking mechanism matched with the torsional cross column, the top end of the inclined rod 701 is provided with a threaded head, and the side wall of the electromagnetic ball 7 is provided with a threaded hole matched with the threaded head.

[0042] In the embodiment, the inclined rod 701 can be twisted by a certain angle relative to the hinged block 702, and then the distance between the electromagnetic ball 7 at the end of the inclined rod 701 and the axis of the vertical shaft 6 can be adjusted, and the angle of the inclined rod 701 can be adjusted by the worker according to the operation requirement.

[0043] In further embodiments of the present application, as shown in the figure, Figures 1-6 The locking mechanism comprises a threaded hole in the side wall of the hinged block 702, the threaded hole is inserted with a locking screw 703, the end of the locking screw 703 is provided with a rubber block, and the rubber block abuts against the side wall of the torsional cross column.

[0044] In the embodiment, the locking screw 703 is loosened before the angle of the inclined rod 701 is adjusted each time, and then the torsional cross column can be freely moved relative to the hinged block 702.

[0045] In further embodiments of the present application, as shown in the figure, Figures 5-8 The eccentric adjusting mechanism comprises a pulling turntable 8 at the top end of the vertical shaft 6, the top end of the pulling turntable 8 is provided with a guide rod 801, the guide rod 801 is slidably provided with a sliding block 802, the top end of the sliding block 802 is provided with a magnetic ball 804, and the side wall of the sliding block 802 is provided with a press screw 803.

[0046] In this embodiment, the sliding block 802 can slide on the guide rod 801, and the gravitational magnetic ball 804 at the top of the sliding block 802 can be adjusted relative to the axis of the vertical axis 6, thus achieving the effect of convenient adjustment.

[0047] In further embodiments of the present invention, such as Figures 5-8 As shown, the gravitational magnetic ball 804 has an insertion port on its side wall, and the top of the sliding block 802 has a support rod. The end of the support rod and the insertion port are glued together.

[0048] In this embodiment, the gravitational magnetic ball 804 can be detached from the support rod, and the gravitational magnetic ball 804 can be replaced with different models of magnetic force.

[0049] In further embodiments of the present invention, such as Figures 3-7 As shown, the outermost membrane filament 302 is the longest, and the adjacent inner membrane filament 302 is five centimeters shorter than the outer membrane filament 302.

[0050] In this embodiment, the membrane fibers 302 closer to the center of the traction turntable 8 are shorter, so that the membrane fibers 302 can avoid tangling when twisting, thus avoiding damage to the ultrafiltration membrane equipment.

[0051] Includes the following steps:

[0052] S1. The wastewater to be treated is poured into the inside of the wastewater tank 1. The left air pump 201 of the four side walls is turned on and the right air pump 201 is turned off. Thus, the air pump 201 can form a positive vortex inside the wastewater tank 1. The right air pump 201 of the four side walls is turned on and the left air pump 201 is turned off. Thus, the air pump 201 can form a reverse vortex inside the wastewater tank 1. The pressure pump 4 starts to generate negative pressure on the central box 305 to perform water suction. The wastewater inside the wastewater tank 1 first passes through the needle hole on the side wall of the membrane fiber 302. The water flows along the membrane fiber 302 and collects in the collection pipe 304 into the interior of the central box 305. The pressure pump 4 draws clean water from the interior of the central box 305 and pushes it out through the outlet pipe 401. The membrane fiber 302 can avoid the accumulation of mud and sand on the surface of the membrane fiber 302 in the vortex environment.

[0053] S2. Stepper motor 5 drives belt 502 and driven wheel 503 to rotate via drive wheel 501. Driven wheel 503 drives vertical shaft 6 to rotate via bevel gear assembly. Electromagnetic ball 7 at the top of vertical shaft 6 also rotates along a circular track. The attraction of electromagnetic ball 7 will pull all iron balls 303, and then all membrane filaments 302 will be pulled towards electromagnetic ball 7. The bottom end of membrane filament 302 moves along a circular track. The swing direction of membrane filament 302 is opposite to the direction of eddy current, so the flow of membrane filament 302 relative to sewage can be increased.

[0054] It should be noted that, for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should know that the present application is not limited by the order of the described actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily necessary for the present application.

[0055] In several embodiments provided in the present application, it should be understood that the disclosed device can be implemented by other ways. For example, the device embodiments described above are only illustrative, for example, the division of the above units, actual implementation can have another division way, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or communication connection between the displayed or discussed units can be through some interfaces, indirect coupling or communication connection between devices or units, which can be electrical or other forms.

[0056] The units described above as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or they can be distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment of the present application.

[0057] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the protection scope of the application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application. Although the present application is described in detail with reference to the above embodiments, those skilled in the art can still combine, add or delete or make other adjustments to the features of the embodiments of the present application according to the circumstances without creative labor, so as to obtain different other technical solutions which do not deviate from the concept of the present application in essence. These technical solutions also belong to the scope of protection of the present application.

Claims

1. A convective vortex MBR membrane treatment device, characterized by: Including sewage tank (1), the inside of sewage tank (1) is filled with sewage, the top of sewage tank (1) is provided with top plate (3), top plate (3) is fixed on the top port of sewage tank (1) by two mounting plates (301), top plate (3) is provided with water suction assembly; The water suction assembly includes six rows of wire holes on the top plate (3), which are arranged in a ring-shaped divergent array, each wire hole is inserted with a membrane wire (302), a twisting mechanism is arranged below the membrane wire (302), and a vortex mechanism is arranged outside the sewage tank (1), the top end of each row of membrane wires (302) is connected in series through a collecting pipe (304), a center box (305) is arranged at the center of the top plate (3), the end of the collecting pipe (304) is inserted into the center box (305), a pressure pump (4) is arranged at the top end of the center box (305), the input pipe of the pressure pump (4) extends into the center box (305), the output end of the pressure pump (4) is provided with a water outlet pipe (401), and the bottom end of the membrane wire (302) is provided with an iron ball (303). The vortex mechanism includes pressure air channels on the four outer side walls of the sewage tank (1), the pressure air channels are composed of two air pipes (2), the shafts of the two air pipes (2) form a forty-five-degree angle with the side walls of the sewage tank (1), respectively, an inclined channel (202) is arranged in the air pipe (2), an air machine (201) is arranged at the outer end of the inclined channel (202), and a one-way air valve is arranged in the inclined channel (202). The twisting mechanism includes a bearing (601) at the bottom of the sewage tank (1), the outer ring of the bearing (601) is fixedly connected with the inner side wall of the sewage tank (1), a vertical shaft (6) is fixedly installed in the inner ring of the bearing (601), an electromagnetic ball (7) is arranged at the top end of the vertical shaft (6), and an eccentric adjusting mechanism is further arranged at the top end of the vertical shaft (6), and the vertical shaft (6) is connected to a driving assembly.

2. A convective vortex MBR membrane treatment device according to claim 1, characterized in that: Steel wires are embedded in the inner side wall of the membrane wire (302), and the diameter of the steel wire is one fourth of the wall thickness of the membrane wire (302).

3. A convective vortex MBR membrane treatment device according to claim 1, characterized in that: The driving assembly includes a horizontal bevel gear (602) outside the vertical shaft (6), a vertical bevel gear (603) is arranged on one side of the horizontal bevel gear (602), the vertical bevel gear (603) and the horizontal bevel gear (602) are meshed with each other, a driven wheel disc (503) is arranged on the shaft rod of the vertical bevel gear (603), the driven wheel disc (503) is rotatably connected to the inner side wall of the sewage tank (1), a stepping motor (5) is arranged at the top end of the sewage tank (1), a driving wheel disc (501) is mounted at the output end of the stepping motor (5), and the driving wheel disc (501) and the driven wheel disc (503) are connected through a belt (502).

4. A convective vortex MBR membrane treatment device according to claim 1, characterized in that: The eccentric adjusting mechanism comprises a hinged block (702) at the top end of the vertical shaft (6), the top end of the hinged block (702) is rotationally provided with an inclined rod (701), the bottom of the inclined rod (701) is provided with a torsion cross column inserted into the hinged block (702), the hinged block (702) is provided with a locking mechanism matched with the torsion cross column, the top end of the inclined rod (701) is provided with a threaded head, and the side wall of the electromagnetic ball (7) is provided with a threaded hole matched with the threaded head.

5. A convective vortex MBR membrane treatment device according to claim 4, characterized in that: The locking mechanism comprises a threaded hole in the side wall of the hinged block (702), and a locking screw (703) is inserted into the threaded hole, and the end of the locking screw (703) is provided with a rubber block abutting against the side wall of the torsion cross column.

6. A convective vortex MBR membrane treatment device according to claim 1, characterized in that: The eccentric adjusting mechanism comprises a pulling turntable (8) at the top end of the vertical shaft (6), the top end of the pulling turntable (8) is provided with a guide rod (801), the guide rod (801) is slidably provided with a sliding block (802), the top end of the sliding block (802) is provided with a magnetic ball (804), and the side wall of the sliding block (802) is provided with a press bolt (803).

7. A convective vortex MBR membrane treatment device according to claim 6, wherein: The side wall of the magnetic ball (804) is provided with a socket, the top end of the sliding block (802) is provided with a supporting rod, and the end of the supporting rod and the socket are bonded by glue.

8. A convective vortex MBR membrane treatment device according to claim 1, characterized in that: The membrane filaments (302) at the outermost side are the longest, and the adjacent inner membrane filaments (302) are five centimeters shorter than the outer membrane filaments (302).

9. The process of treating with a convective vortex MBR membrane treatment device according to any one of claims 1-8, characterized in that, The method comprises the following steps: S1. The sewage to be treated is poured into the inside of the sewage tank (1), the left air machine (201) in the four side walls is turned on, the right air machine (201) is turned off, then the air machine (201) forms a positive vortex in the inside of the sewage tank (1), the right air machine (201) in the four side walls is turned on, the left air machine (201) is turned off, then the air machine (201) forms a reverse vortex in the inside of the sewage tank (1), the pressure pump (4) starts to generate negative pressure to the central box (305) for water absorption, the sewage in the inside of the sewage tank (1) first passes through the pinhole in the side wall of the membrane filament (302), the water flows along the membrane filament (302) to the inside of the central box (305) through the collecting pipe (304), the clean water in the inside of the central box (305) is pushed out from the water outlet pipe (401) by the pressure pump (4), and the membrane filament (302) avoids the accumulation of silt on the surface of the membrane filament (302) in the vortex environment; S2. The stepping motor (5) drives the driving disc (501), the belt (502) and the driven disc (503) to rotate, the driven disc (503) drives the vertical shaft (6) to rotate through the bevel gear assembly, the electromagnetic ball (7) at the top end of the vertical shaft (6) also rotates along an annular track, the attraction of the electromagnetic ball (7) pulls all the iron balls (303), and then all the membrane filaments (302) are pulled towards the direction of the electromagnetic ball (7), the bottom end of the membrane filament (302) moves along the annular track, the swinging direction of the membrane filament (302) is opposite to the direction of the vortex, and the flow of the membrane filament (302) relative to the sewage is increased.

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