A small-scale sewage treatment device

Abstract

This application relates to a small-scale wastewater treatment device, belonging to the field of wastewater treatment equipment. It includes a primary sedimentation tank, one side of which is connected to an anoxic tank. The side of the anoxic tank away from the primary sedimentation tank is connected to an aerobic sedimentation tank. An aeration disc is installed at the bottom of the aerobic sedimentation tank, and a blower is connected to the aeration disc. A disinfection tank is connected to the side of the aerobic sedimentation tank away from the anoxic tank. A vortex assembly is connected inside the anoxic tank, which can further agitate the wastewater flowing into the anoxic tank. This application has the effect of reducing the energy consumption required to treat high-concentration wastewater.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment equipment, and in particular to a small wastewater treatment device. Background Technology

[0002] Wastewater treatment is the process of purifying wastewater to meet the water quality requirements for discharge into a water body or for reuse. Wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscaping, medical care, and catering, and is increasingly becoming a part of ordinary people's daily lives.

[0003] Existing rural single-household or multi-household domestic sewage treatment devices generally adopt traditional activated sludge or biofilm treatment processes such as AO / AAO / multi-stage AO. After pretreatment, most organic pollutants are degraded through microbial oxidation and adsorption. The system includes processes such as mixed liquor and sludge return, as well as mechanical stirring in anoxic tanks. However, due to regional differences, these devices are not sufficiently targeted at high-concentration sewage in some areas. In such high-concentration sewage, the traditional mechanical stirring process has disadvantages such as high energy consumption, uneconomical and environmentally unfriendly. Summary of the Invention

[0004] In order to reduce the energy consumption required to treat high-concentration wastewater, this application provides a small-scale wastewater treatment device.

[0005] The small-scale wastewater treatment device provided in this application adopts the following technical solution:

[0006] A small-scale wastewater treatment device includes a primary sedimentation tank, an anoxic tank connected to one side of the primary sedimentation tank, an aerobic sedimentation tank connected to the side of the anoxic tank away from the primary sedimentation tank, an aeration disc installed at the bottom of the aerobic sedimentation tank and connected to a blower, a disinfection tank connected to the side of the aerobic sedimentation tank away from the anoxic tank, and a vortex assembly connected inside the anoxic tank, which can further agitate the wastewater flowing into the anoxic tank.

[0007] By adopting the above technical solution, when sewage needs to be treated, the sewage first enters the primary sedimentation tank for sedimentation, then enters the anoxic tank for preliminary reaction, and is stirred by the vortex component inside the anoxic tank. After that, the sewage enters the aerobic sedimentation tank for further reaction, and the sewage in the aerobic sedimentation tank then enters the disinfection tank for disinfection, thereby achieving the sewage treatment work. By setting up the vortex component to use the water flow itself to stir the sewage, the energy waste caused by the large amount of mechanical energy required to set up a stirring device is reduced.

[0008] Optionally, the vortex assembly includes a liquid distribution chamber disposed inside the anoxic tank. Multiple liquid distribution chambers are connected sequentially by liquid distribution pipes, and two liquid distribution pipes connected to the same liquid distribution chamber are staggered and arranged opposite to each other. The primary sedimentation tank is connected to one of the liquid distribution chambers through a primary sedimentation inlet pipe, and the liquid distribution chambers away from the primary sedimentation inlet pipe are connected to the aerobic sedimentation tank through anoxic inlet pipes.

[0009] By adopting the above technical solution, when the sewage enters the anoxic tank, it enters the separation chamber. Then, the sewage flows sequentially from multiple separation chambers. During the flow, the two separation pipes connected to the same separation chamber are arranged vertically and horizontally, so that the sewage can be stirred during the flow inside the separation chamber.

[0010] Optionally, the aerobic sedimentation tank is provided with a sedimentation plate that separates the aerobic sedimentation tank. The sedimentation plate is gradually inclined from top to bottom towards the side closer to the disinfection tank, and the sedimentation tank divides the aerobic sedimentation tank into two parts. The aerobic sedimentation tank is provided with a sedimentation inlet pipe that connects the two sides of the sedimentation plate.

[0011] By adopting the above technical solution, the aerobic sedimentation tank is divided into two parts by setting a sedimentation plate, thereby reducing the phenomenon that sludge in the sewage affects the normal use of the aeration discs inside the aerobic sedimentation tank during the sedimentation process.

[0012] Optionally, the aerobic sedimentation tank is connected to a return pipe at the bottom of the sedimentation plate on the side away from the aeration plate, and the other end of the return pipe is connected to the same liquid distribution chamber as the primary sedimentation pipe.

[0013] By adopting the above technical solution and setting up a return pipe, the sludge settled inside the aerobic sedimentation tank can be further treated, thereby achieving a thorough treatment process for the sludge.

[0014] Optionally, the return pipe is connected to the fan, and the fan drives the movement of objects inside the return pipe.

[0015] By adopting the above technical solution, the waste caused by needing to add a drive device to move the sludge inside the return pipe is reduced by connecting the return pipe to the blower and using the blower to move the objects inside the return pipe.

[0016] Optionally, the bottom of the aerobic sedimentation tank is provided with a stirring component on the side of the sedimentation plate near the anoxic tank, and the stirring component is used to stir the sewage inside the aerobic sedimentation tank.

[0017] By adopting the above technical solution and setting up a stirring component, the amount of sludge settling inside the aerobic sedimentation tank around the aeration discs is reduced, thus increasing the trouble for staff to clean the aeration discs.

[0018] Optionally, the stirring assembly includes a first turbine, and the anoxic inlet pipe is connected to the interior of the aerobic sedimentation tank, with one end facing the first turbine and capable of driving the first turbine to rotate.

[0019] By adopting the above technical solution, when sewage enters the aerobic sedimentation tank, the first turbine is rotated, which drives the sewage inside the aerobic sedimentation tank to rotate, thereby reducing the phenomenon of sludge settling around the aeration disc. Furthermore, the sewage is guided to drive the first turbine to rotate through the anoxic inlet pipe, reducing the energy waste caused by the need to add a drive device to drive the first turbine to rotate.

[0020] Optionally, a second turbine is provided on the upper side of the first turbine, which is opposite to the first turbine, and the second turbine drives the water flow in the opposite direction to the first turbine.

[0021] By adopting the above technical solution, and by setting a second turbine with the second turbine driving the water flow in the opposite direction to the first turbine, the problem of sludge being located in the middle of the sewage and thus having difficulty entering the subsequent treatment process is reduced during the process of the first turbine driving the sewage to rotate.

[0022] Optionally, a plurality of third turbines are provided between the first turbine and the second turbine, and the third turbines are arranged at an angle to the first turbine and the second turbine.

[0023] By adopting the above technical solution and adding multiple third turbines, the sewage can be fully stirred by the rotation of the multiple third turbines.

[0024] Optionally, a first bevel gear is connected to one side of the first turbine, a third bevel gear is fixedly connected to one side of each of the third turbines and each of the third bevel gears meshes with the first bevel gear, and a second bevel gear is fixedly connected to the side of the second worm gear near the first turbine and the second bevel gear meshes with multiple of the third bevel gears.

[0025] By adopting the above technical solution, and by setting a first bevel gear, a second bevel gear, and multiple third bevel gears, the first turbine can be driven to rotate through the first bevel gear, the second bevel gear, and multiple third bevel gears during the rotation of the first turbine, thereby reducing the waste caused by the need to add a drive device to drive the second turbine and multiple third turbines to rotate.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. By setting up multiple liquid distribution chambers and liquid distribution pipes, it is possible to achieve the mixing process of sewage and sludge mixed in sewage by utilizing the water flow of sewage itself during the process of sewage flowing between multiple liquid distribution chambers.

[0028] 2. By setting up a return pipe and connecting the return pipe to a blower, a thorough filtration process for sludge in the wastewater is achieved;

[0029] 3. By setting up a stirring component, the wastewater inside the aerobic sedimentation tank can be fully stirred, facilitating subsequent wastewater treatment operations. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0031] Figure 2 This is a cross-sectional view of the overall structure of Embodiment 1 of this application.

[0032] Figure 3 This is a cross-sectional view of the overall structure of Embodiment 2 of this application.

[0033] Figure 4 yes Figure 3 A partially enlarged schematic diagram of structure A in the middle.

[0034] Explanation of reference numerals in the attached diagram: 1. Primary sedimentation tank; 11. Inlet pipe; 12. Primary sedimentation lead pipe; 2. Anoxic tank; 21. Anoxic lead pipe; 3. Aerobic sedimentation tank; 31. Sedimentation plate; 311. Aerobic reaction zone; 312. Sedimentation zone; 32. Sedimentation lead pipe; 33. Aeration disc; 331. Connecting air pipe; 34. Disinfection inlet pipe; 4. Blower; 5. Disinfection tank; 51. Outlet pipe; 6. Vortex assembly; 61. Separating chamber; 62. Separating pipe; 7. Return pipe; 8. Stirring assembly; 81. First turbine; 811. First coupling; 812. First bevel gear; 82. Second turbine; 821. Second coupling; 822. Second bevel gear; 83. Third turbine; 831. Third coupling; 832. Third bevel gear; 84. Protective box. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1 - Appendix Figure 4 This application will be described in further detail.

[0036] This application discloses a small-scale sewage treatment device.

[0037] Example 1

[0038] Reference Figure 1 and Figure 2A small wastewater treatment device includes a primary sedimentation tank 1, an inlet pipe 11 connected to one side of the primary sedimentation tank 1, an anoxic tank 2 provided on the side of the primary sedimentation tank 1 away from the inlet pipe 11, and a primary sedimentation inlet pipe 12 connected to the side of the primary sedimentation tank 1 near the anoxic tank 2. The primary sedimentation inlet pipe 12 connects the primary sedimentation tank 1 and the upper sidewall of the anoxic tank 2.

[0039] An aerobic sedimentation tank 3 is located on the side of the anoxic tank 2 away from the primary sedimentation tank 1. An anoxic inlet pipe 21 is connected to the side of the anoxic tank 2 near the aerobic sedimentation tank 3. The end of the anoxic inlet pipe 21 away from the anoxic tank 2 is inserted into the interior of the aerobic sedimentation tank 3 on the side near the anoxic tank 2. The aerobic sedimentation tank 3 is equipped with a sedimentation plate 31. The sedimentation plate 31 is gradually inclined from top to bottom towards the side away from the anoxic tank 2. The side wall of the sedimentation plate 31 is fixedly connected to the inner wall of the adjacent aerobic sedimentation tank 3. The sedimentation plate 31 divides the aerobic sedimentation tank 3 into two parts, which are shown in a vertical section as a trapezoidal aerobic reaction zone 311 on the side near the anoxic tank 2 and a triangular sedimentation zone 312 on the side away from the anoxic tank 2.

[0040] The anoxic tank 2 is also equipped with an L-shaped sedimentation inlet pipe 32. The sedimentation inlet pipe 32 is vertically arranged, with one end connected to the upper side of the aerobic reaction zone 311 of the aerobic sedimentation tank 3, and the other end of the sedimentation inlet pipe 32 passes through the sedimentation plate 31 and is connected to the sedimentation tank. At the bottom of the aerobic reaction zone 311 of the anoxic tank 2, there are two spaced aeration discs 33, and the two aeration discs 33 are connected by a connecting air pipe 331. A blower 4 is provided on one side of the aerobic sedimentation tank 3, and the blower 4 is connected to one of the aeration discs 33.

[0041] A disinfection tank 5 is located on the side of the aerobic sedimentation tank 3 away from the anoxic tank 2. The disinfection tank 5 is connected to the upper sidewall of the anoxic zone of the aerobic sedimentation tank 3 via a disinfection inlet pipe 34. An outlet pipe 51 is connected to the side of the disinfection tank 5 away from the aerobic sedimentation tank.

[0042] The anoxic tank 2 is also equipped with a vortex component 6, which is used to guide the water flow into the anoxic tank 2 to form a vortex, thereby realizing the stirring process of the sewage.

[0043] In actual use, the sewage first enters the primary sedimentation tank 1 through the inlet pipe 11 for preliminary sedimentation. Then, the sewage overflows into the anoxic tank 2 through the primary sedimentation inlet pipe 12 for preliminary reaction. Inside the anoxic tank 2, the sewage is stirred by the vortex component 6, so that the sewage can react fully. After that, the sewage enters the aerobic sedimentation tank through the anoxic inlet pipe 21. Then, the blower 4 is turned on to lift the sewage inside the aerobic sedimentation tank through the two aeration discs 33, so that the sewage can be placed in the aerobic reaction zone 311 of the aerobic sedimentation tank for secondary reaction.

[0044] Afterwards, the sewage enters the sedimentation zone 312 inside the aerobic sedimentation tank through the sedimentation inlet pipe 32 for further sedimentation. The sewage inside the sedimentation zone 312 of the aerobic sedimentation tank overflows into the disinfection tank 5 through the disinfection inlet pipe 34 for disinfection, thereby realizing the treatment process of domestic sewage.

[0045] Furthermore, by incorporating the vortex component 6, the process of stirring wastewater through water flow is achieved, thus saving energy.

[0046] The vortex assembly 6 includes multiple distribution chambers 61 located inside the anoxic tank 2. In this embodiment, there are six distribution chambers 61, which are interconnected. One end of the primary sedimentation inlet pipe 12, which extends into the anoxic tank 2, is connected to one of the adjacent distribution chambers 61. The multiple distribution chambers 61 are interconnected in a U-shape via distribution pipes 62, and the two distribution pipes 62 connected to the same distribution chamber 61 are located on two side walls and are staggered vertically. The side wall of the distribution chamber 61 connected to the primary sedimentation inlet pipe 12 is connected to the anoxic inlet pipe 21.

[0047] When the sewage enters the separation chamber 61, as the sewage moves along the separation chamber 61, the two separation pipes 62 connected to the same separation chamber 61 are arranged vertically and horizontally, so that the sewage inside the separation chamber 61 can form a vortex and be stirred inside the separation chamber 61.

[0048] The bottom of the sedimentation zone 312 of the aerobic sedimentation tank 3 is connected to a return pipe 7. The side of the return pipe 7 away from the aerobic sedimentation tank 3 is connected to the primary sedimentation inlet pipe 12 and leads to the same liquid distribution chamber 61. The return pipe 7 is connected to the blower 4 and the sludge inside the return pipe 7 is moved by the air lifting action of the blower 4.

[0049] By setting up a return pipe 7 and connecting it to the blower 4, the sludge inside the aerobic sedimentation tank 3 can be purified again.

[0050] The implementation principle of Example 1 is as follows: In actual use, the sewage first enters the primary sedimentation tank 1 for preliminary sedimentation, and then the sewage enters the anoxic tank 2. During the reaction in the anoxic tank 2, the sewage passes through six separation chambers 61 in sequence for stirring, and then the sewage enters the aerobic sedimentation tank for reaction.

[0051] Inside the aerobic sedimentation tank, the wastewater first reacts in the aerobic reaction zone 311, and then enters the sedimentation zone 312 for further sedimentation. The wastewater from the sedimentation tank then enters the disinfection tank 5 for disinfection treatment, and the sludge inside the sedimentation tank enters the anoxic tank 2 through the return pipe 7 for further reaction.

[0052] Example 2

[0053] Reference Figure 3 and Figure 4 The difference between this embodiment and Embodiment 1 is that the aerobic reaction zone 311 inside the aerobic sedimentation tank 3 is equipped with a stirring component 8, which is used to stir the sewage inside the aerobic sedimentation tank 3.

[0054] By setting the stirring component 8, the sewage inside the aerobic sedimentation tank 3 can be stirred, so that the sludge and sewage inside the aerobic sedimentation tank 3 can be fully mixed and enter the sedimentation zone 312 inside the aerobic sedimentation tank 3 for sedimentation, thereby making the sewage treatment more thorough.

[0055] The stirring assembly 8 includes a first turbine 81 located at the bottom center of the aerobic reaction zone 311. The bottom of the first turbine 81 is rotatably connected to the inner bottom wall of the aerobic sedimentation tank 3. A first connecting shaft 811 is fixedly connected to the upper center of the first turbine 81. A first bevel gear 812 is fixedly connected to the top of the first connecting shaft 811.

[0056] A second turbine 82 is provided on the upper side of the first turbine 81, which is opposite to the first turbine 81. The blades of the second turbine 82 rotate in the opposite direction to the blades of the first turbine 81. A second connecting shaft 821, which is opposite to the first connecting shaft 811, is fixedly connected to the side of the second turbine 82 near the first turbine 81. A second bevel gear 822 is fixedly connected to the end of the second connecting shaft 821 near the first connecting shaft 811.

[0057] A plurality of third turbines 83 are provided between the first turbine 81 and the second turbine 82. In this embodiment, the number of third turbines 83 is four, and the four third turbines 83 are evenly distributed around the first connecting shaft 811 and the second connecting shaft 821, and each third turbine 83 is perpendicular to the first turbine 81 and the second turbine 82.

[0058] Each third turbine 83 is fixedly connected to a third connecting shaft 831 at a position close to the first bevel gear 812 and the second bevel gear 822. Each third connecting shaft 831 is fixedly connected to a third bevel gear 832 at the end away from the third turbine 83 it is connected to. Each third bevel gear 832 meshes with both the first bevel gear 812 and the second bevel gear 822.

[0059] A protective box 84 is provided between the first turbine 81 and the second turbine 82. The protective box 84 surrounds the first bevel gear 812, the second bevel gear 822 and the four third bevel gears 832. The first connecting shaft 811, the second connecting shaft 821 and the four third connecting shafts 831 all pass through the adjacent side wall of the protective box 84 and are rotatably connected to the side wall of the protective box 84.

[0060] The anoxic inlet pipe 21 is connected to the interior of the aerobic sedimentation tank 3, with one end facing one of the blades of the first turbine 81.

[0061] When the sewage inside the anoxic tank 2 flows into the aerobic reaction zone 311 through the anoxic inlet pipe 21, the sewage drives the first turbine 81 to rotate. During the rotation of the first turbine 81, the first coupling shaft 811 and the first bevel gear 812 rotate. During the rotation of the first bevel gear 812, the four third bevel gears 832 and the second bevel gear 822 rotate.

[0062] The second bevel gear 822 drives the second turbine 82 to rotate during its rotation. Each third bevel gear 832 drives the connected third turbine 83 to rotate during its rotation. Through the rotation of the first turbine 81, the second turbine 82 and the four third turbines 83, the sludge and sewage inside the aerobic reaction zone 311 can be fully stirred.

[0063] The implementation principle of Example 2 is as follows: when the sewage in the anoxic zone enters the aerobic sedimentation tank 3, the sewage drives the first turbine 81, the second turbine 82 and the four third turbines 83 to rotate simultaneously, thereby achieving a thorough mixing process of sewage and sludge in the aerobic reaction zone 311.

[0064] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A small-scale sewage treatment device, characterized in that: The system includes a primary sedimentation tank (1), one side of which is connected to an anoxic tank (2), and the side of the anoxic tank (2) away from the primary sedimentation tank (1) is connected to an aerobic sedimentation tank (3). An aeration disc (33) is provided at the bottom of the aerobic sedimentation tank (3), and a blower (4) is connected to the aeration disc (33). A disinfection tank (5) is connected to the side of the aerobic sedimentation tank (3) away from the anoxic tank (2). A vortex assembly (6) is connected inside the anoxic tank (2), and the vortex assembly (6) can use the sewage flowing into the anoxic tank (2) to further stir the sewage. The vortex assembly (6) includes a liquid distribution chamber (61) disposed inside the anoxic tank (2). Multiple liquid distribution chambers (61) are connected in sequence by liquid distribution pipes (62). The two liquid distribution pipes (62) connected to the same liquid distribution chamber (61) are staggered and arranged opposite to each other. The primary sedimentation tank (1) is connected to one of the liquid distribution chambers (61) through a primary sedimentation inlet pipe (12). The liquid distribution chamber (61) far away from the primary sedimentation inlet pipe (12) is connected to the aerobic sedimentation tank (3) through anoxic inlet pipe (21). The aerobic sedimentation tank (3) is provided with a sedimentation plate (31) that separates the aerobic sedimentation tank (3). The sedimentation plate (31) is gradually inclined from top to bottom towards the side closer to the disinfection tank (5), and the sedimentation tank divides the aerobic sedimentation tank (3) into two parts. The aerobic sedimentation tank (3) is provided with a sedimentation inlet pipe (32) that connects the two sides of the sedimentation plate (31). The bottom of the aerobic sedimentation tank (3) is provided with a stirring component (8) on the side of the sedimentation plate (31) near the anoxic tank (2). The stirring component (8) is used to stir the sewage inside the aerobic sedimentation tank (3). The stirring assembly (8) includes a first turbine (81), the anoxic inlet pipe (21) is connected to the interior of the aerobic sedimentation tank (3) with one end facing the first turbine (81) and capable of driving the first turbine (81) to rotate, and the bottom of the first turbine (81) is rotatably connected to the inner bottom wall of the aerobic sedimentation tank (3). The first turbine (81) has a second turbine (82) arranged opposite to the first turbine (81) on its upper side. The second turbine (82) and the first turbine (81) drive the water flow in opposite directions. The blades of the second turbine (82) rotate in opposite directions to the blades of the first turbine (81). A plurality of third turbines (83) are provided between the first turbine (81) and the second turbine (82), and the third turbines (83) are arranged at an angle to the first turbine (81) and the second turbine (82); The first turbine (81) is connected to a first bevel gear (812) on one side, and each of the third turbines (83) is fixedly connected to a third bevel gear (832) on one side, and each of the third bevel gears (832) meshes with the first bevel gear (812). The second turbine (82) is fixedly connected to a second bevel gear (822) on the side of the second turbine (81) close to the first turbine (81), and the second bevel gear (822) meshes with the plurality of third bevel gears (832).

2. The small-scale sewage treatment device according to claim 1, characterized in that: The aerobic sedimentation tank (3) is located at the bottom of the sedimentation plate (31) away from the aeration plate (33) and is connected to a return pipe (7). The other end of the return pipe (7) is connected to the same liquid distribution chamber (61) as the primary sedimentation inlet pipe (12).

3. A small-scale sewage treatment device according to claim 2, characterized in that: The return pipe (7) is connected to the fan (4) and the fan (4) drives the objects inside the return pipe (7) to move.

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