A microbial sewage treatment device

Abstract

The present invention discloses a microbial sewage treatment device, which relates to the technical field of sewage treatment, and includes a treatment tank, a microbial carrier bin, a rotating arm, a nozzle, a one-way valve assembly, a fixed bin, a piston, a pressurizing assembly, and an air conveying assembly, wherein the air conveying assembly is used to convey air into the fixed bin. The present invention provides a pressurizing assembly and a nozzle, and when the microbial carrier bin rotates, the pressurizing assembly pressurizes and conveys the microorganisms in the microbial carrier bin into the nozzle, and triggers the one-way valve assembly, and at the same time, the air conveying assembly conveys air into the fixed bin, so that the air and the microorganisms are conveyed from the one-way valve assembly to the mouth of the nozzle together, and the air enters the sewage to form small bubbles, and the small bubbles carry the microorganisms into the sewage, and the small bubbles are easily broken by the sewage pressure, so that the microorganisms can be dispersed in multiple areas below the sewage surface, thereby increasing the content of microorganisms in the unit volume of sewage and improving the sewage treatment efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a microbial sewage treatment device. Background Art

[0002] Microbial sewage treatment is roughly divided into three types, namely activated sludge method, biofilm method and anaerobic biological treatment method. All three methods can produce good purification effects on sewage. When the activated sludge method is implemented, a large amount of air needs to be continuously blown into the sewage so that the sewage can form a large number of aerobic flocs, and then microorganisms are used to purify the organic matter on these flocs to achieve the effect of purifying sewage.

[0003] However, in actual operation, the air blown into the treatment tank is concentrated together and the bubbles formed are often large. The bubbles carry the microorganisms to the surface of the sewage, resulting in a small amount of microorganisms below the sewage surface, which in turn reduces the efficiency of sewage treatment. Summary of the invention

[0004] The object of the present invention is to provide a microbial sewage treatment device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A microbial sewage treatment device comprises a treatment tank and further comprises:

[0007] A microorganism carrier bin is rotatably connected to the treatment pool, wherein a plurality of rotating arms are fixedly connected to the periphery of the microorganism carrier bin, and the rotating arms are hollow inside and communicate with the inside of the microorganism carrier bin;

[0008] A plurality of nozzles fixedly connected to the upper surface of the rotating arm, wherein a one-way valve assembly is provided in the nozzle;

[0009] A fixed bin vertically fixed to the interior of the rotating arm, wherein a communication opening penetrating the interior of the rotating arm is provided at the periphery of the fixed bin;

[0010] A piston engaged in the fixed chamber, wherein the piston freely slides up and down in the fixed chamber;

[0011] A pressurizing component provided on the fixed bin, the pressurizing component is used to drive the piston to reciprocate up and down when the microorganism carrier bin rotates;

[0012] An air delivery component is arranged on the microorganism carrier bin, and the air delivery component is used to deliver air to the fixed bin.

[0013] Furthermore, a transverse plate is fixedly connected to the top of the treatment pool, a motor is vertically mounted on the transverse plate, a connecting shaft is coaxially fixedly connected to the top of the microorganism carrier bin, and the connecting shaft is drivingly connected to the output shaft of the motor.

[0014] Furthermore, the one-way valve assembly comprises:

[0015] A fixed plug fixedly engaged in the nozzle, wherein the end surface of the fixed plug is provided with a through groove;

[0016] A connecting rod coaxially penetrated on the fixing plug, wherein a sealing block is fixedly connected to one end of the connecting rod facing the nozzle mouth, wherein the outer diameter of the sealing block is smaller than the inner diameter of the nozzle, and when the end face of the sealing block abuts against the end face of the fixing plug, the through groove is closed;

[0017] A reset structure is arranged in the nozzle, and the reset structure is used to drive the sealing block to move toward the end surface of the fixed plug, so that the end surface of the sealing block abuts against the end surface of the fixed plug.

[0018] Furthermore, the reset structure includes:

[0019] A nut sleeved on the other end of the connecting rod;

[0020] A first spring is sleeved on the connecting rod, and two ends of the first spring in the elastic force direction elastically press against the fixing plug and the nut respectively.

[0021] Furthermore, the lower inner wall of the communication port is flush with the upper end surface of the piston.

[0022] Furthermore, the pressurizing component comprises:

[0023] A floating rod coaxially fixed to the lower end surface of the piston, the floating rod passing through the rotating arm and freely sliding up and down;

[0024] A plurality of protrusions are fixedly connected to the inner bottom wall of the treatment pool in an axial array along the treatment pool, and the floating rod is used in conjunction with the protrusions.

[0025] Furthermore, a second spring is vertically arranged in the fixed compartment, and two ends of the second spring in the elastic force direction elastically press against the piston and the inner top wall of the rotating arm respectively.

[0026] Furthermore, a roller is rotatably connected to the lower end of the floating rod.

[0027] Furthermore, the air delivery assembly comprises:

[0028] A fixed tube passing through the rotating arm, wherein one end of the fixed tube passes through the rotating arm and is connected with the interior of the fixed bin, and the other end of the fixed tube passes through the rotating arm;

[0029] A rotating chamber coaxially fixed to the top of the microorganism carrier chamber, the rotating chamber is hollow inside and is connected to the end of the fixed pipe passing through the rotating arm through an air pipe, and a first waist-shaped hole is opened on the periphery of the rotating chamber;

[0030] A connecting bin fixedly connected to the horizontal plate, the connecting bin is mounted on the rotating bin and forms a sliding fit with the rotating bin, the interior of the connecting bin is hollow and a plurality of second waist-shaped holes are provided on the inner ring hole wall, the second waist-shaped holes are connected with the interior of the connecting bin, a plurality of the second waist-shaped holes are arranged in an axial array along the connecting bin, and are used in conjunction with the first waist-shaped holes, a pipe joint is connected through the connecting bin, and the interior of the connecting bin is connected through the air pipe.

[0031] Furthermore, a feeding port is provided on the top of the microbial carrier bin.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The present invention provides a pressurizing component and a nozzle. When the microorganism carrier bin rotates, the pressurizing component pressurizes and delivers the microorganisms in the microorganism carrier bin to the nozzle, and triggers the one-way valve component. At the same time, the air delivery component delivers air to the fixed bin, so that the air and the microorganisms are delivered from the one-way valve component to the mouth of the nozzle together. When the air enters the sewage, small bubbles are formed. The small bubbles carry the microorganisms into the sewage. The small bubbles are easily broken by the sewage pressure, so that the microorganisms can be dispersed in multiple areas below the sewage surface, thereby increasing the microorganism content in the unit volume of sewage and improving the sewage treatment efficiency. In addition, because the microorganism carrier bin drives the rotating arm to rotate, when the rotating arm rotates, the microorganisms can be evenly distributed in the sewage to a certain extent, further improving the sewage treatment efficiency.

[0034] The present invention provides a protrusion, a floating rod and a second spring. When the microorganism carrier bin is rotating, the roller installed on the floating rod will roll alternately on the bottom wall of the treatment tank and the surface of the protrusion. When rolling from the bottom wall of the treatment tank to the surface of the protrusion, the floating rod will move upward and make the piston move upward in the fixed bin, thereby generating a large squeezing force on the microorganisms in the fixed bin, so that the microorganisms are sprayed out from the nozzle, and the microorganisms are sprayed into the sewage in the treatment tank intermittently, thereby improving the utilization efficiency of the microorganisms.

[0035] The present invention provides a connecting bin and a rotating bin. When the microorganism carrier bin rotates, the first waist-shaped hole on the rotating bin is alternately connected with the second waist-shaped hole on the connecting bin, so that air can be transported from the first waist-shaped hole, the second waist-shaped hole and the trachea to the fixed bin. When the pressurizing component squeezes the microorganism carrier, the air is synchronously transported to the fixed bin, thereby preventing the air from being transported to the fixed bin all the time, causing the one-way valve component to be affected and causing the one-way valve component to fail. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of a microbial sewage treatment device in the present invention;

[0037] Figure 2 for Figure 1 Schematic diagram of the structure from a top view;

[0038] Figure 3 for Figure 1 The schematic diagram of the structure after the treatment tank, motor and connecting chamber are omitted;

[0039] Figure 4 for Figure 3 A schematic diagram of the structure from a side view;

[0040] Figure 5 for Figure 3 A schematic cross-sectional view of the structure;

[0041] Figure 6 for Figure 5 A magnified schematic diagram of the local structure at point A;

[0042] Figure 7 It is a schematic diagram of the structure after the fixing plug, the sealing block and the connecting rod are assembled in the present invention;

[0043] Figure 8 for Figure 7 Schematic diagram of the explosion decomposition of the structure;

[0044] Fig. 9 It is a structural schematic diagram of the connecting warehouse in the present invention;

[0045] Fig.10 for Fig. 9 A schematic cross-sectional view of the structure;

[0046] Fig.11 It is a structural schematic diagram of the rotary bin in the present invention;

[0047] Fig.12 for Fig.11 Schematic cross-sectional view of the structure.

[0048] In the figure, the description of each figure mark is as follows: 1. treatment tank; 2. protrusion; 3. rotating arm; 4. horizontal plate; 5. motor; 6. connecting chamber; 7. microorganism carrier chamber; 8. air pipe; 9. nozzle; 10. floating rod; 11. fixed chamber; 12. connecting shaft; 13. first waist-shaped hole; 14. connecting port; 15. roller; 16. piston; 17. second spring; 18. fixing plug; 19. sealing block; 20. through groove; 21. first spring; 22. connecting rod; 23. nut; 24. rotating chamber; 25. second waist-shaped hole; 26. feeding port. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] See also Figure 1-Figure 12 The present invention provides a technical solution: a microbial sewage treatment device, comprising a treatment tank 1, a horizontal plate 4 is welded horizontally on the top of the treatment tank 1, a motor 5 is vertically installed on the horizontal plate 4, the output shaft of the motor 5 is connected to a connecting shaft 12 through a coupling, a microbial carrier bin 7 is coaxially welded at the lower end of the connecting shaft 12, the microbial carrier bin 7 is hollow inside and stores microorganisms, a feeding port 26 is opened on the top of the microbial carrier bin 7, microorganisms can be put into the microbial carrier bin 7 from the feeding port 26, a rotating arm 3 is horizontally welded along the axial array of the lower outer wall of the microbial carrier bin 7, the rotating arm 3 is hollow inside, and a plurality of nozzles 9 are welded at equal intervals on the top along the length direction thereof, the inside of the nozzle 9 is connected with the inside of the rotating arm 3, and the inside of the rotating arm 3 is connected with the inside of the microbial carrier bin 7, so that the microorganisms in the microbial carrier bin 7 can enter the inside of the rotating arm 3;

[0051] A one-way valve assembly is provided in the nozzle 9, and the one-way valve assembly includes a fixed plug 18 fixedly engaged in the nozzle 9, a through groove 20 is provided on the end surface of the fixed plug 18, a connecting rod 22 is coaxially penetrated on the fixed plug 18, a sealing block 19 is fixedly connected to one end of the connecting rod 22 facing the nozzle 9 mouth, the outer diameter of the sealing block 19 is smaller than the inner diameter of the nozzle 9, and when the end surface of the sealing block 19 abuts against the end surface of the fixed plug 18, the through groove 20 is closed, and a nut 23 is sleeved on the other end of the connecting rod 22, and a first spring 21 is sleeved on the connecting rod 22, and the two ends of the first spring 21 in the elastic force direction elastically abut the fixed plug 18 and the nut 23 respectively;

[0052] In the initial state, the hydraulic thrust of the microorganisms in the rotating arm 3 on the sealing block 19 is small. At this time, the elastic push force of the first spring 21 on the nut 23 is greater than the push force of the microorganisms on the sealing block 19. Therefore, under the elastic push force of the first spring 21 on the nut 23, the end face of the sealing block 19 will be against the end face of the fixed plug 18, thereby producing a sealing effect on the through groove 20;

[0053] A plurality of fixed bins 11 are vertically welded inside the rotating arm 3, and the number and position of the fixed bins 11 correspond to the nozzle 9. The fixed bin 11 is hollow inside and a connecting port 14 is provided on its lower outer wall, and the connecting port 14 is connected to the inside of the rotating arm 3. A piston 16 is coaxially engaged in the fixed bin 11, and the piston 16 slides freely up and down in the fixed bin 11. A floating rod 10 is coaxially fixedly connected to the lower end face of the piston 16, and the floating rod 10 passes through the rotating arm 3 and slides freely up and down. A plurality of protrusions 2 are welded on the inner bottom wall of the treatment tank 1 in an axial array along the treatment tank 1. The longitudinal section of the protrusion 2 is a trapezoidal shape that is narrow at the top and wide at the bottom. A roller 15 is rotatably connected to the lower end of the floating rod 10. In addition, a second spring 17 is vertically installed in the fixed bin 11, and the two ends of the second spring 17 in the elastic force direction elastically press against the piston 16 and the inner top wall of the rotating arm 3 respectively.

[0054] After the motor 5 is started, it will drive the connecting shaft 12 and the microorganism carrier chamber 7 to rotate slowly. The second spring 17 exerts a downward pressure on the piston 16, causing the roller 15 to roll on the inner bottom wall of the treatment tank 1. During the rolling process, the roller 15 will roll from the inner bottom wall of the treatment tank 1 to the protrusion 2, thereby causing the floating rod 10 to drive the piston 16 to move upward. When the piston 16 moves upward, it will squeeze the microorganisms in the fixed chamber 11. During the squeezing process, the squeezing force of the piston 16 on the microorganisms is greater than the elastic pressure of the first spring 21 on the nut 23, thereby causing the microorganisms to push the sealing block 19 to move away from the fixed plug 18, and causing the first spring 21 to be in a compressed state and begin to accumulate elastic potential energy. After the sealing block 19 moves away from the fixed plug 18, the microorganisms will enter from the through groove 20. The liquid enters the mouth of the nozzle 9, and then is sprayed out from the mouth of the nozzle 9 into the sewage. When the roller 15 rolls from the upper surface of the protrusion 2 to the inner bottom wall of the treatment tank 1, the second spring 17 changes from a compressed state to an extended state, and pushes the piston 16 to move downward. During the downward movement of the piston 16, the floating rod 10 is synchronously driven to move downward. The microorganisms in the rotating arm 3 continue to enter the fixed bin 11 from the connecting port 14. The elastic potential energy accumulated by the first spring 21 is released, so that the sealing block 19 moves toward the direction close to the fixed plug 18 until the end face of the sealing block 19 abuts against the end face of the fixed plug 18, thereby sealing the through groove 20 to prevent the escape of microorganisms. In addition, in order to allow the microorganisms in the rotating arm 3 to smoothly enter the fixed bin 11, the lower inner wall of the connecting port 14 can be set to be flush with the upper end face of the piston 16;

[0055] A fixed tube is provided on the rotating arm 3, one end of the fixed tube penetrates into the rotating arm 3 and is connected with the interior of the fixed bin 11, and the other end of the fixed tube passes through the rotating arm 3. A rotating bin 24 is coaxially fixedly connected to the top of the microorganism carrier bin 7. The interior of the rotating bin 24 is hollow and is connected with the end of the fixed tube passing through the rotating arm 3 through the air pipe 8. A first waist-shaped hole 13 is provided on the periphery of the rotating bin 24. A connecting bin 6 is fixedly connected to the cross plate 4. The connecting bin 6 is sleeved on the rotating bin 24 and forms a sliding fit with the rotating bin 24. The interior of the connecting bin 6 is hollow and a plurality of second waist-shaped holes 25 are provided on the inner ring hole wall. The second waist-shaped holes 25 are connected with the interior of the connecting bin 6. The plurality of second waist-shaped holes 25 are arranged in an axial array along the connecting bin 6 and are used in conjunction with the first waist-shaped holes 13. The number and position of the second waist-shaped holes 25 correspond to the number and position of the protrusions 2. A pipe joint is connected through the connecting bin 6, and the pipe joint is connected to an external air pump through a pipeline.

[0056] The external air pump is started to deliver compressed air to the connecting chamber 6 through the pipe joint. As the microbial carrier chamber 7 rotates, the first waist-shaped hole 13 is alternately connected with the second waist-shaped hole 25. When the first waist-shaped hole 13 and the second waist-shaped hole 25 are connected, the compressed air will enter the first waist-shaped hole 13 from the second waist-shaped hole 25, and then enter the trachea 8 from the inner cavity of the rotating chamber 24, and then enter the fixed chamber 11 from the trachea 8.

[0057] The working principle of the present invention is as follows: the external air pump is started, and the compressed air is delivered to the connecting chamber 6 through the pipe joint, and the motor 5 is started. After the motor 5 is started, it will drive the connecting shaft 12 and the microorganism carrier chamber 7 to rotate slowly, and the second spring 17 exerts a downward pressure on the piston 16, so that the roller 15 rolls on the inner bottom wall of the treatment tank 1. During the rolling process, the roller 15 will roll from the inner bottom wall of the treatment tank 1 to the protrusion 2, so that the floating rod 10 drives the piston 16 to move upward. When the piston 16 moves upward, it will squeeze the microorganisms in the fixed chamber 11. During the squeezing process, the squeezing force of the piston 16 on the microorganisms is greater than the elastic pressure of the first spring 21 on the nut 23, so that the microorganisms push the sealing block 19 to move in the direction away from the fixed plug 18, and the first spring 21 is at The second spring 17 is in a compressed state and begins to accumulate elastic potential energy. After the sealing block 19 moves in a direction away from the fixed plug 18, the microorganisms will enter the mouth of the nozzle 9 from the through groove 20, and then be sprayed into the sewage from the mouth of the nozzle 9. When the roller 15 rolls from the upper surface of the protrusion 2 to the inner bottom wall of the treatment tank 1, the second spring 17 changes from a compressed state to an extended state and pushes the piston 16 to move downward. During the downward movement of the piston 16, the floating rod 10 is synchronously driven to move downward. The microorganisms in the rotating arm 3 continue to enter the fixed bin 11 from the connecting port 14. The elastic potential energy accumulated by the first spring 21 is released, causing the sealing block 19 to move in a direction close to the fixed plug 18 until the end face of the sealing block 19 abuts against the end face of the fixed plug 18, thereby sealing the through groove 20 to prevent the escape of microorganisms.

[0058] In addition, synchronously, as the microorganism carrier bin 7 rotates, the first waist-shaped hole 13 is alternately connected with the second waist-shaped hole 25. When the first waist-shaped hole 13 and the second waist-shaped hole 25 are connected, the compressed air will enter the first waist-shaped hole 13 from the second waist-shaped hole 25, and then enter the trachea 8 from the inner cavity of the rotating bin 24, and then enter the fixed bin 11 from the trachea 8. In this way, the piston 16 synchronously transports a small amount of compressed air and microorganisms to the nozzle 9 during the upward movement, so that the air is sprayed from the mouth of the nozzle 9 into the sewage to form small bubbles, and the microorganisms are entrained, so that the microorganisms can be diffused in the treatment tank 1.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A microbial sewage treatment device, comprising a treatment tank (1), characterized in that: Also includes: A microorganism carrier bin (7) rotatably connected to the treatment pool (1), wherein a plurality of rotating arms (3) are fixedly connected to the periphery of the microorganism carrier bin (7), and the rotating arms (3) are hollow inside and communicate with the inside of the microorganism carrier bin (7); a plurality of nozzles (9) fixedly connected to the upper surface of the rotating arm (3), wherein a one-way valve assembly is provided in the nozzles (9); A fixed bin (11) vertically fixed to the interior of the rotating arm (3), the number and position of the fixed bins (11) corresponding to the nozzles (9), and a communication opening (14) penetrating the interior of the rotating arm (3) is provided on the periphery of the fixed bin (11); A piston (16) engaged with the fixed chamber (11), wherein the piston (16) slides freely up and down in the fixed chamber (11); a pressurizing component disposed on the fixed bin (11), the pressurizing component being used to drive the piston (16) to reciprocate up and down when the microorganism carrier bin (7) rotates, and the pressurizing component drives the one-way valve component in the nozzle (9) to open and close; an air delivery component disposed on the microorganism carrier bin (7), the air delivery component being used to deliver air into the fixed bin (11); The pressurizing component comprises: A floating rod (10) coaxially fixed to the lower end surface of the piston (16), wherein the floating rod (10) passes through the rotating arm (3) and is free to slide up and down; A plurality of protrusions (2) are fixedly connected to the inner bottom wall of the treatment pool (1) in an axial array along the treatment pool (1), and the floating rod (10) is used in conjunction with the protrusions (2); A second spring (17) is vertically arranged in the fixed chamber (11), and two ends of the second spring (17) in the elastic force direction elastically press against the piston (16) and the inner top wall of the rotating arm (3) respectively; The lower end of the floating rod (10) is rotatably connected to a roller (15).

2. The microbial sewage treatment device according to claim 1, characterized in that: A horizontal plate (4) is fixedly connected to the top of the treatment pool (1), a motor (5) is vertically mounted on the horizontal plate (4), a connecting shaft (12) is coaxially fixedly connected to the top of the microorganism carrier bin (7), and the connecting shaft (12) is drivingly connected to the output shaft of the motor (5).

3. The microbial sewage treatment device according to claim 1, characterized in that: The one-way valve assembly comprises: A fixed plug (18) fixedly engaged in the nozzle (9), wherein an end surface of the fixed plug (18) is provided with a through groove (20); a connecting rod (22) coaxially inserted through the fixing plug (18), the connecting rod (22) having one end facing the nozzle (9) mouth fixedly connected to a sealing block (19), the outer diameter of the sealing block (19) being smaller than the inner diameter of the nozzle (9), and the through groove (20) being closed when the end surface of the sealing block (19) abuts against the end surface of the fixing plug (18); A reset structure is provided in the nozzle (9), the reset structure being used to drive the sealing block (19) to move towards the end surface of the fixing plug (18), so that the end surface of the sealing block (19) abuts against the end surface of the fixing plug (18).

4. The microbial sewage treatment device according to claim 3, characterized in that: The reset structure comprises: A nut (23) sleeved on the other end of the connecting rod (22); A first spring (21) is sleeved on the connecting rod (22), and two ends of the first spring (21) in the elastic force direction elastically press against the fixing plug (18) and the nut (23) respectively.

5. The microbial sewage treatment device according to claim 1, characterized in that: The lower inner wall of the communication port (14) is flush with the upper end surface of the piston (16).

6. The microbial sewage treatment device according to claim 2, characterized in that: The air delivery assembly comprises: a fixed tube passing through the rotating arm (3), one end of the fixed tube passing through the rotating arm (3) and communicating with the interior of the fixed bin (11), and the other end of the fixed tube passing through the rotating arm (3); A rotating chamber (24) coaxially fixed to the top of the microorganism carrier chamber (7), the rotating chamber (24) being hollow inside and connected to one end of the fixed tube passing through the rotating arm (3) via an air pipe (8), and a first waist-shaped hole (13) being provided on the periphery of the rotating chamber (24); A connecting chamber (6) is fixedly connected to the transverse plate (4), the connecting chamber (6) is sleeved on the rotating chamber (24) and forms a sliding fit with the rotating chamber (24), the interior of the connecting chamber (6) is hollow and a plurality of second waist-shaped holes (25) are opened on the inner ring hole wall, the second waist-shaped holes (25) are connected to the interior of the connecting chamber (6), the plurality of second waist-shaped holes (25) are arranged in an axial array along the connecting chamber (6) and are used in conjunction with the first waist-shaped holes (13), a pipe joint is connected through the connecting chamber (6), and the interior of the connecting chamber (6) is connected through the air pipe (8).

7. The microbial wastewater treatment device according to claim 1, characterized in that: The top of the microorganism carrier bin (7) is provided with a feeding port (26).

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