A sewage anaerobic MBR treatment equipment

Abstract

The invention discloses a sewage anaerobic MBR treatment equipment, including a water tank, wherein the water tank is divided into a plurality of filter chambers connected in series by a partition, a through hole is provided on the partition, bypass pipes connected in parallel with the filter chambers are provided on both sides of each filter chamber, a fixing clamp is fixed on the top of the filter chamber, a plurality of slots are provided at the bottom of the fixing clamp, a filter plate frame is plugged and fixed on the fixing clamp, a plug plate corresponding to the slots is fixed on the filter plate frame, an MBR filter membrane is fixedly installed on the plug plate, a nozzle is installed on the edge of the slot, a sewage pipe is installed at the bottom of the filter chamber, and electromagnetic valves are installed in the through hole, the bypass pipe and the sewage pipe respectively. The invention can improve the deficiencies of the prior art, can effectively and flexibly flush the MBR membrane online, and effectively extend the service life of the MBR membrane.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to sewage anaerobic MBR treatment equipment. Background Art

[0002] MBR membrane is an ultrafiltration membrane used for sewage treatment, which is used to achieve rapid solid-liquid separation and sludge sedimentation. Traditional MBR membranes are generally installed in aerobic reaction tanks, and the surface of the MBR membranes is flushed by aeration. Existing studies have found that placing MBR membranes in anaerobic reaction tanks can effectively improve the BOD removal rate, but it is impossible to use large-flow aeration to flush the surface of the MBR membrane in anaerobic reaction tanks, so how to improve the service life of MBR membranes in anaerobic reaction tanks has become one of the hot topics in this field. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a sewage anaerobic MBR treatment equipment, which can solve the deficiencies of the prior art, can effectively and flexibly flush the MBR membrane online, and effectively extend the service life of the MBR membrane.

[0004] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows.

[0005] A sewage anaerobic MBR treatment device comprises a water tank, wherein the water tank is divided into a plurality of filter chambers connected in series by a partition, a through hole is provided on the partition, bypass pipes connected in parallel with the filter chambers are provided on both sides of each filter chamber, a fixing clamp is fixed on the top of the filter chamber, a plurality of slots are provided at the bottom of the fixing clamp, a filter plate frame is plugged and fixed on the fixing clamp, a plug plate corresponding to the slots is fixed on the filter plate frame, an MBR filter membrane is fixedly mounted on the plug plate, a nozzle is installed on the edge of the slot, a sewage pipe is installed at the bottom of the filter chamber, and electromagnetic valves are respectively installed in the through hole, the bypass pipe and the sewage pipe.

[0006] Preferably, the plug plate is provided with two slots, each of which is clamped with an MBR filter membrane, and two pressure rods are symmetrically provided on the outer edge of the plug plate, the pressure rods are connected to the plug plate through torsion springs, and the free end shaft of the pressure rods is connected with a mesh plate, which is movably pressed onto the MBR filter membrane.

[0007] Preferably, an air inlet hole is provided at the bottom of the slot, and a through slot is provided at the bottom of the plug board.

[0008] Preferably, the nozzle is installed on both sides of the slot, the nozzle comprises a main body, a liquid inlet pipe is arranged in the main body, a conical guide portion is arranged at the outlet of the liquid inlet pipe, a plurality of nozzles are arranged in a ring on the side wall of the main body, the axis of the nozzle is inclined toward the inside of the nozzle, the angle between the nozzle and the axis of the nozzle is 15°, and the axis of the nozzle is inclined toward the MBR filter membrane.

[0009] Preferably, a baffle is fixed on the outer side of the conical guide portion, and the axis of the nozzle intersects with the baffle.

[0010] The beneficial effects brought about by adopting the above technical scheme are: the present invention adopts a plug-in installation method to realize the installation of the MBR filter membrane, and bypass pipes are connected to both ends of each filter chamber to facilitate the separate flushing operation of the MBR filter membrane in each filter chamber. The flushing operation is achieved by spraying flushing liquid through a nozzle, and the flushing liquid and impurity residues are discharged through a sewage pipe. The MBR filter membrane adopts a counter-pressurized tensioning installation method. During the flushing process, the impact force of the flushing liquid is used to act on the two MBR filter membranes to achieve high-frequency vibration of the MBR filter membrane, thereby effectively improving the flushing effect of the MBR filter membrane. At the same time, since the two MBR filter membranes are movably crimped in the center, a large gap is left at the edge, and high-speed airflow is filled into the space between the two MBR filter membranes through the air inlet, further improving the cleaning effect of the MBR filter membrane surface. The nozzle adopts an inner and outer two-layer spray structure, which effectively expands the nozzle's spray coverage. The water flow sprayed from the nozzle impacts the water flow sprayed from the conical guide part and the baffle before and after, which can make the water flow more evenly distributed on the surface of the MBR filter membrane, thereby strengthening the vibration caused by the impact of the water flow on the MBR filter membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of a specific implementation mode of the present invention.

[0012] Figure 2 It is a structural diagram of a filter chamber in a specific embodiment of the present invention.

[0013] Figure 3 It is a structural diagram of a plug board in a specific implementation manner of the present invention.

[0014] Figure 4 It is a structural diagram of a nozzle in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0015] Reference Figure 1-4A specific embodiment of the present invention includes a water tank 1, which is divided into a plurality of filter chambers 3 connected in series by a partition 2, a through hole 4 is opened on the partition 2, and bypass pipes 6 connected in parallel with the filter chamber 3 are arranged on both sides of each filter chamber 3, a fixing clamp 7 is fixed on the top of the filter chamber 3, and a plurality of slots 8 are arranged at the bottom of the fixing clamp 7, a filter plate frame 9 is plugged and fixed on the fixing clamp 7, and a plug plate 10 corresponding to the slots 8 is fixed on the filter plate frame 9, an MBR filter membrane 11 is fixedly installed on the plug plate 10, a nozzle 12 is installed at the edge of the slot 8 (the nozzle 12 is connected to a flushing liquid pipe, which is not shown in the figure), a sewage pipe 13 is installed at the bottom of the filter chamber 3, and solenoid valves 5 are respectively installed in the through hole 4, the bypass pipe 6 and the sewage pipe 13. Two card slots 14 are arranged on the plug board 10, and an MBR filter membrane 11 is clamped in each card slot 14. Two pressure rods 16 are symmetrically arranged on the outer edge of the plug board 10, and the pressure rods 16 are connected to the plug board 10 through torsion springs 15. The free end of the pressure rod 16 is connected to a mesh plate 17, and the mesh plate 17 is movably pressed on the MBR filter membrane 11. An air inlet 18 is arranged at the bottom of the slot 8 (the air inlet duct connected to the air inlet 18 is located in the fixing clamp 7, and the outside of the fixing clamp 7 is connected to the air inlet duct with an air supply pipe, which is not shown in the figure), and a through slot 19 is arranged at the bottom of the plug board 10. The nozzle 12 is installed on both sides of the slot 8. The nozzle 12 includes a main body 20. A liquid inlet pipe 21 is arranged in the main body 20. A conical guide portion 22 is arranged at the outlet of the liquid inlet pipe 21. A plurality of nozzles 23 are arranged in a ring on the side wall of the main body 20. The axis of the nozzle 23 is inclined toward the inside of the nozzle 12. The angle between the nozzle 23 and the axis of the nozzle 12 is 15°. The axis of the nozzle 12 is inclined toward the MBR filter membrane 11. A baffle 24 is fixed to the outside of the conical guide portion 22. The axis of the nozzle 23 intersects with the baffle 24.

[0016] In addition, arc-shaped spring pieces 25 are arranged on the contact surface between the mesh plate 17 and the MBR filter membrane 11. When the mesh plate 17 reciprocates with the MBR filter membrane 11, the arc-shaped spring pieces 25 elastically separate the MBR filter membrane 11 from the mesh plate 17, thereby reducing the interference of the different vibration frequencies of the mesh plate 17 and the MBR filter membrane 11 on the vibration of the MBR filter membrane 11.

[0017] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A sewage anaerobic MBR treatment device, comprising a water tank (1), Features: The water tank (1) is divided into a plurality of filter chambers (3) connected in series by a partition (2). A through hole (4) is provided on the partition (2). A bypass pipe (6) connected in parallel with the filter chamber (3) is provided on both sides of each filter chamber (3). A fixing clamp (7) is fixed on the top of the filter chamber (3). A plurality of slots (8) are provided at the bottom of the fixing clamp (7). A filter plate frame (9) is plugged and fixed on the fixing clamp (7). A plug plate (10) corresponding to the slots (8) is fixed on the filter plate frame (9). An MBR filter membrane (11) is fixedly installed on the plug plate (10). A nozzle (12) is installed at the edge of the slot (8). A sewage pipe (13), a solenoid valve (5) is installed in each of the through hole (4), the bypass pipe (6) and the sewage pipe (13); two card slots (14) are arranged on the plug plate (10), and an MBR filter membrane (11) is clamped in each card slot (14); two pressure rods (16) are symmetrically arranged on the outer edge of the plug plate (10), and the pressure rods (16) are connected to the plug plate (10) through torsion springs (15); the free end of the pressure rod (16) is axially connected to a mesh plate (17), and the mesh plate (17) is movably pressed on the MBR filter membrane (11); an air inlet hole (18) is arranged at the bottom of the slot (8), and a through slot (19) is arranged at the bottom of the plug plate (10).

2. The sewage anaerobic MBR treatment equipment according to claim 1, Features: The nozzle (12) is installed on both sides of the slot (8), and the nozzle (12) comprises a main body (20). A liquid inlet pipe (21) is arranged in the main body (20), and a conical guide portion (22) is arranged at the outlet of the liquid inlet pipe (21). A plurality of nozzles (23) are arranged in a ring on the side wall of the main body (20), and the axis of the nozzle (23) is inclined toward the inside of the nozzle (12). The angle between the axis of the nozzle (23) and the axis of the nozzle (12) is 15°, and the axis of the nozzle (12) is arranged to be inclined toward the MBR filter membrane (11).

3. The sewage anaerobic MBR treatment equipment according to claim 2, Features: A baffle plate (24) is fixed to the outer side of the conical guide portion (22), and the axis of the nozzle (23) intersects with the baffle plate (24).

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