Rural domestic sewage treatment tank

Abstract

The utility model provides a rural domestic sewage treatment tank, which relates to the technical field of rural sewage treatment devices, and comprises a tank body, a sewage inlet bin, an anoxic bin, an anaerobic bin, an aeration bin, a precipitation bin, a return pipe, a strain generator and an aeration piece, the sewage inlet bin is connected with a sewage inlet in the tank body, and the anoxic bin is connected with the sewage inlet bin through a sewage inlet hole in the bottom of a partition plate; the anaerobic bin is connected with the anoxic bin through a first water distributor, the aeration bin is connected with the anaerobic bin through a second water distributor, the two ends of the backflow pipe are arranged in the anoxic bin and the aeration bin, the strain generator is arranged in the aeration bin, the aeration piece is connected with the backflow pipe and the strain generator, the sedimentation bin is connected with the aeration bin through an overflow pipe, and the sedimentation bin is connected with a treated water outlet. According to the application, the problems that strain microorganisms cultured and domesticated by the aeration tank are easy to die due to fluctuation of water quality and water quantity, culture strains need to be supplemented again, and a pump machine of a return pipe is easy to block and fail in the aeration tank can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of rural sewage treatment devices, in particular to a rural domestic sewage treatment tank. Background Art

[0002] Rural domestic sewage treatment tanks are used in rural areas. They are mainly composed of septic tanks, aerobic tanks and sedimentation tanks. Sewage is transported from a distance to the treatment tank through pipes for treatment. During the treatment process, an air pump is required to supply air to the aeration pipes in the sewage treatment tank. The aeration pipes aerate the tank body to promote sewage treatment.

[0003] The current rural domestic sewage treatment tank has the following problems in use: first, the microorganisms cultivated and domesticated in the aeration tank are easily killed by fluctuations in water quality and quantity, and the cultivated microorganisms need to be re-added. Due to the inconvenience of equipment maintenance in rural areas, the normal sewage treatment will be affected; second, the return pipe pumps the digestate in the aeration tank to the anoxic bin or anaerobic bin through the pump, and the pump is prone to blockage and failure in the aeration tank, which increases the maintenance frequency. Therefore, this application proposes a rural domestic sewage treatment tank. Utility Model Content

[0004] In order to overcome the problems in the background technology, the utility model provides a rural domestic sewage treatment tank to solve the problems that the domesticated bacterial microorganisms in the aeration tank are easily killed by fluctuations in water quality and quantity, and the cultured bacterial species need to be re-replenished, and the pump of the return pipe is easily blocked in the aeration tank.

[0005] A rural domestic sewage treatment tank comprises a tank body, a sewage inlet tank, an anoxic tank, an anaerobic tank, an aeration tank, a sedimentation tank, a return pipe, a bacterial strain generator and an aeration element; the two ends and the top of the tank body are respectively provided with a sewage inlet, a treated water outlet and an inspection port, the sewage inlet tank is connected with the sewage inlet in the tank body, the anoxic tank is connected with the sewage inlet through the sewage inlet hole at the bottom of the partition, the anaerobic tank is connected with the anoxic tank through a water distributor 1 on the partition, the aeration tank is connected with the anaerobic tank through a water distributor 2 on the partition, both ends of the return pipe are arranged in the anoxic tank and the aeration tank, the bacterial strain generator is arranged in the aeration tank, the aeration element is connected with the return pipe and the bacterial strain generator, the sedimentation tank is connected with the aeration tank through an overflow pipe on the partition, and the sedimentation tank is connected with the treated water outlet.

[0006] Furthermore, the aeration component includes an air inlet pipe 1, an air inlet pipe 2 and an aeration plate, the air inlet ends of the air inlet pipe 1 and the air inlet pipe 2 are connected to the air outlet end of the aeration pump outside the tank body, the air inlet pipe 1 is connected to the aeration plate and the bacterial strain generator, and the air inlet pipe 2 is connected to the return pipe.

[0007] Furthermore, the strain generator is placed in the middle of the aeration bin, diffusion holes are evenly arranged on the shell of the strain generator, a tubular aerator is arranged in the shell of the strain generator, a strain fixing layer is arranged between the tubular aerator and the shell of the strain generator, and the tubular aerator is connected to the air inlet pipe through an air flow gate valve.

[0008] Furthermore, the liquid inlet end of the reflux pipe in the aeration bin is an enlarged variable-diameter water inlet, and the second air inlet pipe extends into the variable-diameter water inlet.

[0009] Furthermore, a packing layer one and a packing layer two are respectively provided in the anoxic chamber and the anaerobic chamber, the water inlet of the water distributor one is arranged on the partition above the packing layer one, and the water outlet is arranged below the packing layer two, the water inlet of the water distributor two is arranged on the partition above the packing layer two, and the water outlet is arranged between the aeration plate and the bacterial strain generator.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The present application is provided with a strain generator placed in the middle of an aeration bin, diffusion holes are evenly arranged on the shell of the strain generator, a tubular aerator is arranged inside the shell of the strain generator, a strain fixing layer is arranged between the tubular aerator and the shell of the strain generator, and aeration can be used to allow the bacterial agent cultured and fixed on the strain fixing layer to enter the aeration bin, thereby solving the problem that the microorganisms of the strains cultured and domesticated in the aeration tank of a traditional rural domestic sewage treatment tank are easily affected by the fluctuation of water quality and quantity and die, and the cultured strains need to be replenished again. The present application pushes the nitrification liquid entering the reflux pipe into the anoxic bin by connecting the air inlet pipe 2 of the aeration pump, and there is no need to set up an additional pump in the aeration bin, thereby solving the problem that the pump of the reflux pipe is easily blocked in the aeration tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for use in describing the embodiments are described.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 4 It is a schematic diagram of the top view structure of the utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the bacterial strain generator of the utility model.

[0018] 1-tank body, 11-sewage inlet, 12-treated water outlet, 13-inspection port, 2-sewage inlet bin, 21-sewage inlet hole, 3-anoxic bin, 31-water distributor one, 32-filling layer one, 4-anaerobic bin, 41-water distributor two, 42-filling layer two, 5-aeration bin, 51-overflow pipe, 6-sedimentation bin, 7-return pipe, 71-variable water inlet, 8-bacteria generator, 81-diffusion hole, 82-tubular aerator, 83-bacteria fixed layer, 9-aeration element, 91-inlet pipe one, 92-inlet pipe two, 93-aeration plate. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to facilitate understanding by technicians.

[0020] The utility model discloses a rural domestic sewage treatment tank, referring to Figure 1-5 A rural domestic sewage treatment tank comprises a tank body 1, a sewage inlet tank 2, an anoxic tank 3, an anaerobic tank 4, an aeration tank 5, a sedimentation tank 6, a return pipe 7, a bacterial strain generator 8 and an aeration element 9; the tank body 1 is provided with a sewage inlet 11, a treated water outlet 12 and an inspection port 13 at both ends and the top, the sewage inlet tank 2 is connected with the sewage inlet 11 in the tank body 1, the anoxic tank 3 is connected with the sewage inlet tank 2 through a sewage inlet hole 21 at the bottom of the partition, the anaerobic tank 4 is connected with the anoxic tank 3 through a water distributor 1 31 on the partition, the aeration tank 5 and the anaerobic tank 4 are connected through a water distributor 2 41 on the partition, both ends of the return pipe 7 are arranged in the anoxic tank 3 and the aeration tank 5, the bacterial strain generator 8 is arranged in the aeration tank 5, the aeration element 9 is connected with the return pipe 7 and the bacterial strain generator 8, the sedimentation tank 6 is connected with the aeration tank 5 through an overflow pipe 51 on the partition, and the sedimentation tank 6 is connected with the treated water outlet 12.

[0021] Sewage can enter the sewage inlet 2 of the tank body 1 from the sewage inlet 11, and enter the anoxic bin 3 through the sewage inlet hole 21, and nitrify to remove nitrate nitrogen, and remove part of BOD at the same time. The treated sewage can enter the anaerobic bin 4 through the water distributor 1 31. Under anaerobic conditions, microorganisms use bottom mud and organic matter to produce a large amount of carbon dioxide, methane and other gases to remove most of the COD. The treated sewage can enter the aeration bin 5 through the water distributor 2 41, and the dissolved oxygen content in the water is maintained by the aeration part 9. The bacterial agent is diffused by the bacterial generator 8 to allow the microorganisms to further decompose the organic matter into inorganic matter. The nitrification liquid in the aeration bin 5 can enter the anoxic bin 3 through the reflux pipe 7 for recycling. The treated sewage enters the sedimentation bin 6 through the overflow pipe 51 for sedimentation. The sludge is intercepted by the lower grille plate of the sedimentation bin 6, and the treated water rises and is discharged through the treated water outlet 12. The sludge can be discharged regularly through the sludge pipe in the sedimentation bin 6.

[0022] See also Figure 1-5The aeration member 9 includes an air inlet pipe 1 91, an air inlet pipe 2 92 and an aeration plate 93. The air inlet ends of the air inlet pipe 1 91 and the air inlet pipe 2 92 are connected to the air outlet end of the aeration pump outside the tank body 1, and the gas generated by the aeration pump is passed into the aeration bin 5. The air inlet pipe 1 91 is connected to the aeration plate 93 and the bacterial strain generator 8, which can increase the dissolved oxygen content in the water and allow the aerobic bacteria to diffuse out from the bacterial strain generator 8, thereby solving the problem that the bacterial strains and microorganisms cultivated and domesticated in the aeration tank of the traditional rural domestic sewage treatment tank are easily affected by the fluctuation of water quality and water quantity and die, and the problem that the cultivated bacteria need to be re-supplemented is solved. The air inlet pipe 2 92 is connected to the return pipe 7, and the nitrification liquid is pressed from the aeration bin 5 into the anoxic bin 3 through the return pipe 7 through the aeration pressure difference, thereby solving the problem that the pump of the traditional return pipe 7 is easily blocked in the aeration bin 5.

[0023] See also Figure 1-5 The strain generator 8 is placed in the middle of the aeration bin 5, and diffusion holes 81 are evenly arranged on the shell of the strain generator 8. A tubular aerator 82 is arranged in the shell of the strain generator 8, and a strain fixing layer 83 is arranged between the tubular aerator 82 and the shell of the strain generator 8. The tubular aerator 82 is connected to the air inlet pipe 91 through an air flow gate valve, so that the bacterial agent cultured and fixed on the strain fixing layer 83 can be aerated through the tubular aerator 82 and then enter the aeration bin from the diffusion hole 81, thereby solving the problem that the strain microorganisms cultured and domesticated in the aeration tank of the traditional rural domestic sewage treatment tank are easily affected by the fluctuation of water quality and water quantity and die, and the strains need to be re-cultivated.

[0024] See also Figure 1-5 The liquid inlet end of the reflux pipe 7 in the aeration bin 5 is an enlarged variable-diameter water inlet 71, and the second air inlet pipe 92 extends into the variable-diameter water inlet 71. The nitrified liquid can enter the reflux pipe 7 through the variable-diameter water inlet 71, and the airflow introduced by the second air inlet pipe 92 can press the nitrified liquid from the aeration bin 5 into the anoxic bin 3.

[0025] See also Figure 1-5 The anoxic bin 3 and the anaerobic bin 4 are respectively provided with a packing layer 1 32 and a packing layer 2 42. The water inlet of the water distributor 1 31 is arranged on the partition above the packing layer 1 32, and the water outlet is arranged below the packing layer 2 42. The water inlet of the water distributor 2 41 is arranged on the partition above the packing layer 2 42, and the water outlet is arranged between the aeration plate 93 and the bacterial generator 8. The sewage passes through the packing layer 1 32 and the packing layer 2 42 during the movement from bottom to top, and can be intercepted and filtered by the elastic packing, thereby improving the filtering effect.

[0026] Working process:

[0027] The sewage enters the sewage inlet 2 of the tank body 1 from the sewage inlet 11, and enters the anoxic tank 3 through the sewage inlet hole 21 for nitrification to remove nitrate nitrogen. The sewage is filtered by the packing layer 32 and enters the anaerobic tank 4 through the water distributor 31. Most of the COD is removed under anaerobic conditions. The sewage is filtered by the material layer 42 and enters the aeration tank 5 through the water distributor 41. The air inlet pipe 91 in the aeration tank 5 connected to the aeration pump outside the tank body 1 can pass air into the aeration plate 93 and the tubular aerator 82 to maintain the dissolved oxygen content in the water and make the bacteria The bacteria cultured and fixed on the fixed layer 83 diffuse into the aeration bin to decompose organic matter into inorganic matter, except for most of the organic matter such as COD and ammonia nitrogen in the sewage. The air inlet pipe 92 is connected to the aeration pump outside the tank body 1, and the air outlet end extends into the variable diameter water inlet 71, and the nitrification liquid is pressed from the aeration bin 5 into the anoxic bin 3 for reuse. The treated sewage enters the sedimentation bin 6 for sedimentation through the overflow pipe 51, and the treated water rises and is discharged through the treated water outlet 12, and the sludge is discharged regularly through the sludge pipe in the sedimentation bin 6.

[0028] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rural domestic sewage treatment tank, characterized in that: It comprises a tank body (1), a sewage inlet tank (2), an anoxic tank (3), an anaerobic tank (4), an aeration tank (5), a sedimentation tank (6), a return pipe (7), a bacterial strain generator (8) and an aeration element (9); The tank body (1) is provided with a sewage inlet (11), a treated water outlet (12) and an inspection port (13) at both ends and at the top thereof. The sewage inlet bin (2) is connected to the sewage inlet (11) in the tank body (1). The anoxic bin (3) is connected to the sewage inlet bin (2) via a sewage inlet hole (21) at the bottom of the partition. The anaerobic bin (4) is connected to the anoxic bin (3) via a water distributor (31) on the partition. The aeration bin (5) is connected to the anaerobic bin (4) via a water distributor (41) on the partition. Both ends of the return pipe (7) are arranged in the anoxic bin (3) and the aeration bin (5). The bacterial strain generator (8) is arranged in the aeration bin (5). The aeration element (9) is connected to the return pipe (7) and the bacterial strain generator (8). The sedimentation bin (6) is connected to the aeration bin (5) via an overflow pipe (51) on the partition. The sedimentation bin (6) is connected to the treated water outlet (12).

2. The rural domestic sewage treatment tank according to claim 1, characterized in that: The aeration element (9) comprises an air inlet pipe (91), an air inlet pipe (92) and an aeration plate (93); the air inlet ends of the air inlet pipe (91) and the air inlet pipe (92) are connected to the air outlet end of the aeration pump outside the tank body (1); the air inlet pipe (91) is connected to the aeration plate (93) and the bacterial strain generator (8); and the air inlet pipe (92) is connected to the return pipe (7).

3. The rural domestic sewage treatment tank according to claim 2, characterized in that: The bacterial strain generator (8) is placed in the middle of the aeration bin (5); the shell of the bacterial strain generator (8) is evenly provided with diffusion holes (81); a tubular aerator (82) is provided inside the shell of the bacterial strain generator (8); a bacterial strain fixing layer (83) is provided between the tubular aerator (82) and the shell of the bacterial strain generator (8); and the tubular aerator (82) is connected to an air inlet pipe 1 (91) via an air flow gate valve.

4. The rural domestic sewage treatment tank according to claim 2, characterized in that: The liquid inlet end of the return pipe (7) in the aeration bin (5) is an enlarged variable-diameter water inlet (71), and the second air inlet pipe (92) extends into the variable-diameter water inlet (71).

5. The rural domestic sewage treatment tank according to claim 2, characterized in that: The anoxic chamber (3) and the anaerobic chamber (4) are respectively provided with a packing layer 1 (32) and a packing layer 2 (42); the water inlet of the water distributor 1 (31) is arranged on the baffle plate above the packing layer 1 (32), and the water outlet is arranged below the packing layer 2 (42); the water inlet of the water distributor 2 (41) is arranged on the baffle plate above the packing layer 2 (42), and the water outlet is arranged between the aeration plate (93) and the bacterial strain generator (8).

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