A2 / O integrated biological nitrogen and phosphorus removal treatment device

Abstract

The utility model discloses an A < 2 > / O integrated biological nitrogen and phosphorus removal treatment device, relating to the technical field of sewage treatment, the A < 2 > / O integrated biological nitrogen and phosphorus removal treatment device comprises a support frame, a coarse screening tank, an anaerobic tank, an aerobic tank, an MBR tank, a disinfection tank and a sedimentation tank are sequentially distributed at the upper end of the support frame from front to back, an MBR membrane frame is fixedly mounted in the MBR tank, a plurality of air holes are formed in the bottom of the MBR tank, and the bottom of the MBR tank is provided with a plurality of filter screens. A plurality of air holes are formed between the MBR tank and the sedimentation tank, a sealing box is fixedly mounted at the bottom of the MBR tank, a fan is fixedly mounted on the side wall of the sedimentation tank, and the fan is communicated with the sealing box through an air inlet pipe. When the MBR tank is used, air entering the sealing box can enter the MBR tank through the air holes, so that a large number of bubbles are generated in the MBR tank, and the bubbles can make MBR membrane wires on the MBR membrane frame slightly shake continuously, so that gaps among the MBR membrane wires are prevented from being blocked by sludge.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field, concretely is a kind of A2 / O integrated biological denitrification and phosphorus removal treatment device. BACKGROUND

[0002] A2 / O process (AAO process, AAO method) is a commonly used secondary sewage treatment process, with the effect of simultaneous nitrogen and phosphorus removal, which can be used for secondary sewage treatment or tertiary sewage treatment; after subsequent deep treatment, it can be used as reclaimed water, with good nitrogen and phosphorus removal effect.

[0003] In the A2 / O process, MBR tank is needed to treat sewage, but the MBR membrane rack in the existing MBR tank is usually fixedly installed, which also causes the membrane filaments on the MBR membrane rack to be in a static state for a long time, so that the gap between the membrane filaments is blocked by sludge, affecting the treatment efficiency of the MBR membrane filaments on the sewage. Therefore, an A2 / O integrated biological denitrification and phosphorus removal treatment device is proposed. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing an A2 / O integrated biological denitrification and phosphorus removal treatment device to solve the problems raised in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an A2 / O integrated biological denitrification and phosphorus removal treatment device, a support frame, the upper end of the support frame is sequentially distributed with a coarse sieve pool, an anaerobic tank, an aerobic tank, an MBR tank, a disinfection tank and a sedimentation tank from front to back, an MBR membrane rack is fixedly installed in the MBR tank, a plurality of air holes are formed in the bottom of the MBR tank, a sealing box is fixedly installed at the bottom of the MBR tank, a fan is fixedly installed on the side wall of the sedimentation tank, and the fan and the sealing box are communicated through an air inlet pipe.

[0006] As a further preferred embodiment of the present technical solution, the height of the fan is above the MBR tank.

[0007] As a further preferred embodiment of the present technical solution, the coarse sieve pool, the anaerobic tank, the aerobic tank and the MBR tank are communicated through communication ports respectively, and the heights of the three communication ports decrease from front to back.

[0008] As a further preferred embodiment of the present technical solution, a fixed plate is fixedly installed at the upper end of the disinfection tank, a motor is fixedly installed at the upper end of the middle part of the fixed plate, a rotating rod is rotatably installed at the bottom of the middle part of the fixed plate, the output shaft of the motor is fixedly connected with the rotating rod, and a plurality of stirring rods are fixedly installed on the outer wall of the rotating rod.

[0009] As a further preferred of the technical solution, the liquid outlet end of the MBR membrane frame is communicated with a first water inlet pipe, the other end of the first water inlet pipe is located in the interior of the disinfection tank, the disinfection tank and the sedimentation tank are communicated through a second water inlet pipe, a water pump is arranged on the second water inlet pipe, and the water pump is fixedly installed on the fixed plate.

[0010] As a further preferred of the technical solution, the opening position of the coarse screen tank is provided with a grid, and handles are fixedly installed on the two sides of the grid.

[0011] As a further preferred of the technical solution, a sludge pump is fixedly installed on the support frame, and the two ends of the sludge pump are communicated with the anaerobic tank and the MBR tank through reflux pipes.

[0012] The utility model provides a kind of A2 / O integrated biological nitrogen and phosphorus removal treatment device, with the following beneficial effects:

[0013] The utility model discloses a fan imports the air along the air inlet pipe into the sealed box, because multiple air holes are arranged between the sealed box and the MBR tank, the air into the sealed box can enter the MBR tank through the air hole, to generate a large amount of bubbles in the MBR tank, these bubbles can make the MBR membrane silk on the MBR membrane frame constantly slightly shake, to avoid the gap between MBR membrane silk being blocked by sludge, and then effectively improve the efficiency of MBR membrane silk in treating sewage. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is the schematic diagram of the overall structure of the utility model;

[0015] Fig. 2 It is the schematic diagram of the overall structure of the utility model;

[0016] Fig. 3 It is the structural schematic diagram of the coarse screen tank in the utility model;

[0017] Fig. 4 It is the structural schematic diagram of the disinfection tank in the utility model;

[0018] In the drawing: 1, coarse screen tank;2, anaerobic tank;3, aerobic tank;4, MBR tank;5, disinfection tank;6, sedimentation tank;7, support frame;8, grid;9, handle;10, sludge pump;11, reflux pipe;12, communication port;13, MBR membrane frame;14, fan;15, air inlet pipe;16, sealed box;17, air hole;18, first water inlet pipe;19, second water inlet pipe;20, motor;21, rotating rod;22, stirring rod;23, water pump;24, fixed plate. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0020] The utility model provides technical scheme: as Figs. 1 to 4 As shown in the figure, in the embodiment, an A2 / O integrated biological denitrification and dephosphorization treatment device, support frame 7, the upper end of support frame 7 is sequentially distributed with coarse screen pool 1, anaerobic tank 2, aerobic tank 3, MBR tank 4, disinfection tank 5 and sedimentation tank 6 from front to back, MBR membrane frame 13 is fixedly installed in MBR tank 4, a plurality of air holes 17 are formed in the bottom of MBR tank 4, a sealing box 16 is fixedly installed in the bottom of MBR tank 4, a fan 14 is fixedly installed on the side wall of sedimentation tank 6, and the fan 14 and the sealing box 16 are communicated through the air inlet pipe 15.

[0021] The height of the fan 14 is above the MBR tank 4.

[0022] In this way, the sewage in the MBR tank 4 can be prevented from entering the fan 14.

[0023] The two adjacent ones of the coarse screen pool 1, the anaerobic tank 2, the aerobic tank 3 and the MBR tank 4 are communicated through the communication port 12, and the heights of the three communication ports 12 decrease from front to back.

[0024] The heights of the three communication ports 12 decrease from front to back, so that the sewage can flow along the directions of the coarse screen pool 1, the anaerobic tank 2, the aerobic tank 3 and the MBR tank 4.

[0025] The upper end of the disinfection tank 5 is fixedly installed with a fixed plate 24, the upper middle part of the fixed plate 24 is fixedly installed with a motor 20, the bottom middle part of the fixed plate 24 is rotatably installed with a rotating rod 21, the output shaft of the motor 20 is fixedly connected with the rotating rod 21, and a plurality of stirring rods 22 are fixedly installed on the outer wall of the rotating rod 21.

[0026] In use, the liquid medicine is poured into the disinfection tank 5, then the motor 20 is started to drive the rotating rod 21 to rotate, so as to drive the stirring rod 22 to stir the sewage and the liquid medicine in the disinfection tank 5.

[0027] The liquid outlet end of the MBR membrane frame 13 is communicated with a first water inlet pipe 18, the other end of the first water inlet pipe 18 is located in the interior of the disinfection tank 5, the disinfection tank 5 and the sedimentation tank 6 are communicated through a second water inlet pipe 19, the second water inlet pipe 19 is provided with a water pump 23, and the water pump 23 is fixedly installed on the fixed plate 24.

[0028] In use, the sewage in the MBR tank 4 can be introduced into the disinfection tank 5 along the first water inlet pipe 18 through the built-in pump of the MBR membrane frame 13, and the sewage in the disinfection tank 5 can be introduced into the sedimentation tank 6 along the second water inlet pipe 19 through the water pump 23.

[0029] The opening position of the rough screening pool 1 is provided with a grid 8, and the two sides of the grid 8 are respectively fixedly installed with handles 9.

[0030] The grid 8 can screen out the large sundries in the sewage.

[0031] The sludge pump 10 is fixedly installed on the support frame 7, and the two ends of the sludge pump 10 are respectively communicated with the anaerobic tank 2 and the MBR tank 4 through reflux pipes 11.

[0032] The sludge pump 10 can guide the sludge in the MBR tank 4 into the anaerobic tank 2.

[0033] The utility model provides an A2 / O integrated biological nitrogen and phosphorus removal treatment device, and the specific working principle is as follows:

[0034] In use, the sewage is guided into the rough screening pool 1, the grid 8 arranged in the rough screening pool 1 can screen out the large sundries in the sewage, then the sewage will pass through the anaerobic tank 2, the aerobic tank 3 and enter the MBR tank 4 in sequence through the communication ports 12, the height of the three communication ports 12 is lowered in sequence from front to back, can avoid sewage backflow, the MBR membrane wire on the MBR membrane frame 13 in the MBR tank 4 can handle sewage, simultaneously start the fan 14, the fan 14 will guide the outside air into the sealed box 16 along the air inlet pipe 15, because the sealed box 16 is provided with a plurality of air holes 17 between the MBR tank 4, the air in the sealed box 16 will pass through the air hole 17 and enter the MBR tank 4, thereby generating a large amount of bubbles in the MBR tank 4, these bubbles can make the MBR membrane wire on the MBR membrane frame 13 vibrate slightly, thereby avoiding the gap between the MBR membrane wire being blocked by sludge, and effectively improving the efficiency of the MBR membrane wire in treating sewage, then the sewage in the MBR tank 4 can be guided into the disinfection tank 5 along the first water inlet pipe 18 through the built-in pump of the MBR membrane frame 13, the sewage in the disinfection tank 5 can be guided into the sedimentation tank 6 along the second water inlet pipe 19 through the water pump 23, thereby completing the nitrogen and phosphorus removal treatment of the sewage.

[0035] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An integrated A2 / O biological denitrification and dephosphorization treatment device, support frame (7), characterized in that: The upper end of the support frame (7) is sequentially distributed with a coarse screen pool (1), an anaerobic pool (2), an aerobic pool (3), an MBR pool (4), a disinfection pool (5) and a sedimentation pool (6) from front to back, the MBR membrane rack (13) is fixedly installed in the MBR pool (4), a plurality of air holes (17) are formed in the bottom of the MBR pool (4), the sealing box (16) is fixedly installed in the bottom of the MBR pool (4), the fan (14) is fixedly installed on the side wall of the sedimentation pool (6), and the fan (14) and the sealing box (16) are communicated through the air inlet pipe (15).

2. The A2 / O integrated biological denitrification and dephosphorization treatment device according to claim 1, characterized in that: The height of the fan (14) is above the MBR pool (4).

3. The A2 / O integrated biological denitrification and dephosphorization treatment device according to claim 1, characterized in that: The coarse screen pool (1), the anaerobic pool (2), the aerobic pool (3) and the MBR pool (4) are communicated through the communication ports (12) between two adjacent pools, and the heights of the three communication ports (12) decrease from front to back.

4. The A2 / O integrated biological denitrification and dephosphorization treatment device according to claim 1, characterized in that: The upper end of the disinfection pool (5) is fixedly installed with a fixed plate (24), the upper end of the fixed plate (24) is fixedly installed with a motor (20), the bottom of the fixed plate (24) is rotatably installed with a rotating rod (21), the output shaft of the motor (20) is fixedly connected with the rotating rod (21), and a plurality of stirring rods (22) are fixedly installed on the outer wall of the rotating rod (21).

5. The A2 / O integrated biological denitrification and dephosphorization treatment device according to claim 4, characterized in that: The liquid outlet of the MBR membrane rack (13) is communicated with a first water inlet pipe (18), the other end of the first water inlet pipe (18) is located in the disinfection pool (5), the disinfection pool (5) and the sedimentation pool (6) are communicated through a second water inlet pipe (19), the water pump (23) is arranged on the second water inlet pipe (19), and the water pump (23) is fixedly installed on the fixed plate (24).

6. The A2 / O integrated biological denitrification and dephosphorization treatment device according to claim 1, characterized in that: The opening position of the coarse screen pool (1) is provided with a grille (8), and the two sides of the grille (8) are fixedly installed with handles (9).

7. The A2 / O integrated biological denitrification and dephosphorization treatment device according to claim 1, characterized in that: The support frame (7) is fixedly installed with a sludge pump (10), and the two ends of the sludge pump (10) are communicated with the anaerobic pool (2) and the MBR pool (4) through reflux pipes (11).

Images