Integrated sewage treatment mechanism

Abstract

The utility model relates to the technical field of sewage treatment, and discloses an integrated sewage treatment mechanism, which comprises an anoxic zone, the aerobic zone comprises a first aerobic tank and a second aerobic tank, one side of the first aerobic tank is communicated with the anoxic zone, the other side of the first aerobic tank is communicated with the second aerobic tank, and aeration pipes are arranged in the first aerobic tank and the second aerobic tank; the sedimentation tank module is arranged in the second aerobic tank and located above the aeration pipe, the sedimentation tank module comprises a central pipe and a separation device arranged around the bottom of the central pipe, a gas-water inlet is formed in the bottom of the central pipe, a water outlet and a gas outlet are formed in the top of the central pipe, the separation device comprises a separation plate, and the separation plate is folded downwards. A water vapor cavity is formed in the top of the separation plate and communicates with the water inlet. The sedimentation tank module with the secondary sedimentation tank function is integrated in the aerobic zone, so that the arrangement of the secondary sedimentation tank is reduced, the overall occupied area is reduced, and the equipment operation management requirement is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an integrated sewage treatment mechanism. Background Art

[0002] At present, the standard process of the secondary biological treatment process of the sewage treatment process is anoxic tank + aerobic tank + secondary sedimentation tank. Traditionally, the aerobic tank and the secondary sedimentation tank are both designed as two independent tank bodies. An air diffuser pipe is installed at the bottom of the aerobic tank; it is more common to use a radial flow sedimentation tank or a horizontal flow sedimentation tank for the secondary sedimentation tank, and a sludge scraping system must be configured to smoothly discharge sludge, and the structure is complex. Therefore, the above design scheme has the disadvantages of large floor area, high requirements for equipment operation and management, and easy sludge discharge. Content of the Utility Model

[0003] The purpose of the utility model is to provide an integrated sewage treatment mechanism, which integrates a sedimentation tank module with the function of a secondary sedimentation tank into the aerobic zone, reduces the setting of the secondary sedimentation tank, reduces the overall floor area, and reduces the requirements for equipment operation and management.

[0004] In order to achieve the above purpose, the utility model provides an integrated sewage treatment mechanism, including:

[0005] Anoxic zone;

[0006] Aerobic zone, the aerobic zone includes a first aerobic tank and a second aerobic tank. One side of the first aerobic tank is connected to the anoxic zone, and the other side is connected to the second aerobic tank. Air diffuser pipes are arranged in the first aerobic tank and the second aerobic tank;

[0007] Sedimentation tank module, the sedimentation tank module is arranged in the second aerobic tank and above the air diffuser pipe. The sedimentation tank module includes a central pipe and a separation device arranged around the bottom of the central pipe. The bottom of the central pipe is provided with an air-water inlet, and the top is provided with a water outlet and an air outlet. The separation device includes a separation plate, the separation plate is folded downward, and a water-air cavity is formed at the top of the separation plate, and the water-air cavity is communicated with the water inlet.

[0008] Compared with the prior art, the integrated sewage treatment mechanism of the embodiment of the present utility model has the following beneficial effects: the anoxic zone, the first aerobic tank, and the second aerobic tank are arranged in sequence. A sedimentation tank module is arranged in the second aerobic tank. The sedimentation tank module includes a central pipe and a separation device arranged around the central pipe. The separation mechanism includes a separation plate that is folded and arranged downward. When the integrated sewage treatment mechanism of the present application works, sewage enters the first aerobic tank and the second aerobic tank in sequence after passing through the anoxic zone for aeration. The aerated sewage moves upward and enters the separation mechanism. After encountering the folded separation plate in the separation mechanism, the gas and liquid in the sewage are lighter in mass and will form a gas-water cavity near the top of the separation plate. The gas and water in the gas-water cavity will enter the central pipe through the gas-water inlet of the central pipe and move upward along the central pipe, and are discharged from the central pipe through the air outlet and the water outlet at the top of the central pipe respectively, achieving the effect of gas-water separation. In the integrated sewage treatment mechanism of the present application, the sedimentation tank module with the function of a secondary sedimentation tank is integrated into the aerobic zone, reducing the setting of the secondary sedimentation tank, reducing the overall floor area, and lowering the requirements for equipment operation and management.

[0009] In the integrated sewage treatment mechanism of the embodiment of the present utility model, a first connection hole is opened at the bottom of the side wall of the anoxic zone connecting the first aerobic tank to communicate with the first aerobic tank.

[0010] In the integrated sewage treatment mechanism of the embodiment of the present utility model, a second connection hole is opened on one side wall of the first aerobic tank connecting the second aerobic tank. A perforated water distribution pipe is arranged in the second aerobic tank, and one end of the perforated water distribution pipe is connected to the second connection hole.

[0011] In the integrated sewage treatment mechanism of the embodiment of the present utility model, the perforated water distribution pipe is arranged around the bottom of the second aerobic tank.

[0012] In the integrated sewage treatment mechanism of the embodiment of the present utility model, an aeration pipe is arranged above the perforated water distribution pipe.

[0013] In the integrated sewage treatment mechanism of the embodiment of the present utility model, the separation device includes a first separation zone and a second separation zone that are spaced apart in the vertical direction. A plurality of first separation plates that are horizontally distributed and folded are arranged in the first separation zone, and a plurality of second separation plates that are horizontally distributed and folded are arranged in the second separation zone.

[0014] In the integrated sewage treatment mechanism of the embodiment of the present utility model, a second gap exists between adjacent second separation plates, a first gap exists between adjacent first separation plates, and the top of the second separation plate is aligned with the first interval.

[0015] In the integrated sewage treatment mechanism according to the embodiment of the present utility model, a water outlet pipe is arranged at the top of the sedimentation tank module. The water outlet pipe is arranged around the central pipe, and a water inlet is arranged on the outer peripheral surface of the water outlet pipe.

[0016] In the integrated sewage treatment mechanism according to the embodiment of the present utility model, a mud baffle is arranged between the water outlet pipe and the central pipe.

[0017] In the integrated sewage treatment mechanism according to the embodiment of the present utility model, the surface load of the sedimentation tank module in the horizontal direction is less than 0.8 m³ / m²·h.

[0018] Some of the additional aspects and advantages of the present utility model will be given in the following description, some will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the integrated sewage treatment mechanism according to the embodiment of the present utility model;

[0020] Figure 2 is a schematic structural diagram of the sedimentation tank module of the integrated sewage treatment mechanism according to the embodiment of the present utility model in another direction Detailed Embodiments

[0021] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0022] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0023] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If the first and second are described only for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence of the indicated technical features.

[0024] In the description of the present utility model, unless otherwise clearly defined, terms such as "arrangement", "installation", and "connection" shall be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0025] As Figure 1 and Figure 2 shown, an integrated sewage treatment mechanism of a preferred embodiment of the present utility model includes an anoxic zone 1 and an aerobic zone 2. In the anoxic environment of the anoxic zone 1, microorganisms reduce nitrate (NO3-) to nitrogen gas (N2) through denitrification, thereby achieving nitrogen removal; a submersible mixer is provided in the anoxic zone 1. In the aerobic zone 2, in the aerobic environment, microorganisms oxidize and decompose organic matter through aerobic respiration to generate carbon dioxide and water, and release energy at the same time.

[0026] The aerobic zone 2 of the present application includes a first aerobic tank 21 and a second aerobic tank 22. One side of the first aerobic tank 21 communicates with the anoxic zone 1, and the other side communicates with the second aerobic tank 22. Aeration pipes 23 are provided in the first aerobic tank 21 and the second aerobic tank 22; specifically, the anoxic zone 1, the first aerobic tank 21, and the second aerobic tank 22 are arranged in a straight line in sequence. The anoxic zone 1, the first aerobic tank 21, and the second aerobic tank 22 are all set in a cuboid shape, and the height does not exceed 6m.

[0027] A sedimentation tank module 3 is provided in the second aerobic tank 22, and a support 4 is provided at the bottom of the sedimentation tank module 3; the sedimentation tank module 3 is arranged on the top of the second aerobic tank 22 and above the aeration pipes 23. The sedimentation tank module 3 includes a central pipe 31 and a separation device 32 provided at the bottom around the central pipe 31. The part of the separation device 32 surrounding the central pipe 31 at the top forms a solid-liquid separation zone 33; a gas-water inlet 311 is opened at the bottom of the central pipe 31, and a water outlet 312 and a gas outlet 313 are provided at the top. The gas outlet 313 is opened upward, and the water outlet 312 is opened around the outer peripheral surface of the top of the central pipe 31. The separation device 32 includes a plurality of separation plates, and the plurality of separation plates are all folded downward, and there are gaps between adjacent separation plates. The top of the separation plate forms a water-gas cavity 321, and the water-gas cavity 321 communicates with the water inlet.

[0028] During operation, the sewage passes through the anoxic zone 1 and then enters the first aerobic tank 21 and the second aerobic tank 22 in sequence for aeration. The aerated sewage moves upward into the separation mechanism. After encountering the folded separation plate in the separation mechanism, the gas and liquid in the sewage, due to their relatively light mass, will form a gas-water cavity near the top of the separation plate, while the heavier solid sludge impurities will settle downward; the gas and water in the gas-water cavity enter the central pipe 31 through the gas-water inlet 311 of the central pipe 31 and move upward along the central pipe 31, and are discharged from the central pipe 31 through the gas outlet 313 and the water outlet 312 at the top of the central pipe 31 respectively, achieving the effect of gas-water separation. The small amount of solid sludge impurities in the discharged water body of the central pipe 31 move downward through the gaps between the separation plates and return to the bottom of the second aerobic tank 22 for precipitation. In the integrated sewage treatment mechanism of the present application, the sedimentation tank module 3 with the function of a secondary sedimentation tank is integrated into the aerobic zone 2, reducing the setting of the secondary sedimentation tank, reducing the overall floor area, and lowering the requirements for equipment operation and management.

[0029] In some embodiments of the present utility model, a first connection hole 11 is provided at the bottom of the side wall of the anoxic zone 1 connecting the first aerobic tank 21 to communicate with the first aerobic tank 21. The first connection hole 11 is provided at the bottom to facilitate the sewage injected from the top to be sent to the aerobic zone 2 after complete anaerobic reaction, which is beneficial to the complete reaction in the anaerobic zone and improves the quality of sewage treatment.

[0030] In some embodiments of the present utility model, a second connection hole 25 is provided on one side wall of the first aerobic tank 21 connecting the second aerobic tank 22. The second connection hole 25 is provided at the bottom to facilitate the sewage to enter the second aerobic tank 22 and then enter the sedimentation tank module 3 at the top from below; a perforated water distribution pipe 24 is provided in the second aerobic tank 22, and one end of the perforated water distribution pipe 24 is connected to the second connection hole 25. The setting of the perforated water distribution pipe 24 enables the entry position of the sewage in the second aerobic zone 2 to be controllable, and the sludge will not accumulate excessively at the second connection hole 25, but can reach different positions at the bottom of the second aerobic tank 22.

[0031] In some embodiments of the present utility model, the perforated water distribution pipe 24 is arranged around the bottom of the second aerobic tank 22, and the sewage can be evenly sent to the bottom of the second aerobic tank 22, ensuring the uniform distribution of the sewage after entry, enabling the sedimentation tank module 3 to also perform uniform sedimentation separation operations, and being beneficial to ensuring the working efficiency of the sedimentation tank module 3.

[0032] In some embodiments of the present utility model, an aeration pipe 23 is provided above the perforated water distribution pipe 24, so that the sewage entering the second aerobic tank 22 through the perforated water distribution pipe 24 can be immediately aerated and move upward with the gas to the sedimentation tank module 3 to complete gas-water separation, improving the working efficiency of the second aerobic tank 22.

[0033] In some embodiments of the utility model, the separation device 32 includes a first separation zone 322 and a second separation zone 323 spaced apart in the vertical direction, and a plurality of horizontally distributed and folded first separation plates 324 are arranged in the first separation zone 322, and a plurality of horizontally distributed and folded second separation plates 325 are arranged in the second separation zone 323. The arrangement of the first separation plates 324 and the second separation plates 325 allows the muddy sewage facing upward from the bottom to undergo multiple separations, and can also prevent the muddy sewage from directly entering the separation zone 33 above the sedimentation tank module 3 and affecting the gas-water separation at the top.

[0034] In some embodiments of the utility model, there is a second gap between adjacent second separation plates 325, and a first gap between adjacent first separation plates 324. The top of the second separation plate 325 is aligned with the first gap, and the first gap and the second gap are staggered. The upward sludge-carrying sewage from below will always be blocked by the separation plate to prevent it from directly entering the separation area at the top. In addition, a small amount of sludge that arrives at the separation area with the central pipe 31 will not be affected by the upward movement of the sludge-carrying sewage during the falling process, thereby ensuring the smooth falling of the sludge.

[0035] In some embodiments of the utility model, a water outlet pipe 34 is provided on the top of the sedimentation tank module 3, and the water outlet pipe 34 is used to send the water in the separation zone out of the second aerobic tank 22. Multiple water outlet pipes 34 are arranged around the central pipe 31, which improves the efficiency of water outlet. A water inlet is provided on the outer peripheral surface of the water outlet pipe 34 to facilitate water to enter the water outlet pipe 34.

[0036] In some embodiments of the utility model, a fender 35 is provided between the outlet pipe 34 and the central pipe 31 , so that water can reach the separation zone along the fender 35 , thereby preventing water with a small amount of mud gushing out of the outlet 312 from directly entering the outlet pipe 34 .

[0037] In some embodiments of the present invention, the horizontal surface load of the sedimentation tank module 3 is less than 0.8m 3 / m 2 ·h, the sedimentation tank module 3 with a load less than this can ensure that the separation operation continues without backflow or separation stoppage.

[0038] The working process of the utility model is as follows: the anoxic zone 1, the first aerobic tank 21 and the second aerobic tank 22 are arranged in sequence. A sedimentation tank module 3 is arranged in the second aerobic tank 22. The sedimentation tank module 3 includes a central pipe 31 and a separation device 32 arranged around the central pipe 31. The separation mechanism includes a separation plate arranged in a downward-folded manner. When the integrated sewage treatment mechanism of the present application works, the sewage passes through the anoxic zone 1 and then enters the first aerobic tank 21 and the second aerobic tank 22 in sequence for aeration. The aerated sewage moves upward and enters the separation mechanism. After encountering the folded separation plate in the separation mechanism, the gas and liquid in the sewage, due to their relatively light mass, will form a gas-water cavity near the top of the separation plate. The gas and water in the gas-water cavity will enter the central pipe 31 through the gas-water inlet 311 of the central pipe 31 and move upward along the central pipe 31, and are discharged from the central pipe 31 through the air outlet 313 and the water outlet 312 at the top of the central pipe 31 respectively, achieving the effect of gas-water separation.

[0039] In summary, the embodiment of the utility model provides an integrated sewage treatment mechanism, which integrates the sedimentation tank module 3 with the function of a secondary sedimentation tank into the aerobic zone 2, reduces the setting of the secondary sedimentation tank, reduces the overall floor area, and reduces the requirements for equipment operation and management.

[0040] The above is only the preferred embodiment of the utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the utility model, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the utility model.

Claims

1. An integrated sewage treatment mechanism, characterized in that, Comprising: Anoxic zone; Aerobic zone, the aerobic zone includes a first aerobic tank and a second aerobic tank, one side of the first aerobic tank is connected to the anoxic zone, and the other side is connected to the second aerobic tank. Aeration pipes are arranged in the first aerobic tank and the second aerobic tank. A sedimentation tank module, the sedimentation tank module is arranged in the second aerobic tank and above the aeration pipe. The sedimentation tank module includes a central pipe and a separation device arranged around the bottom of the central pipe. A gas-water inlet is arranged at the bottom of the central pipe, and a water outlet and a gas outlet are arranged at the top. The separation device includes a separation plate, the separation plate is folded downward, and a water-gas cavity is formed at the top of the separation plate. The water-gas cavity is communicated with the gas-water inlet.

2. The integrated sewage treatment mechanism according to claim 1, wherein: A first connection hole is opened at the bottom of the side wall of the anoxic zone connecting the first aerobic tank to communicate with the first aerobic tank.

3. The integrated sewage treatment mechanism according to claim 1, characterized in that: A second connection hole is opened on one side wall of the first aerobic tank connecting the second aerobic tank. A perforated water distribution pipe is arranged in the second aerobic tank, and one end of the perforated water distribution pipe is connected to the second connection hole.

4. The integrated sewage treatment mechanism according to claim 3, characterized in that: The perforated water distribution pipe is arranged around the bottom of the second aerobic tank.

5. The integrated sewage treatment mechanism according to claim 3, characterized in that: The aeration pipe is arranged above the perforated water distribution pipe.

6. The integrated sewage treatment mechanism according to claim 1, wherein: The separation device includes a first separation area and a second separation area arranged at intervals in the vertical direction. A plurality of first separation plates horizontally distributed and folded are arranged in the first separation area, and a plurality of second separation plates horizontally distributed and folded are arranged in the second separation area.

7. The integrated sewage treatment mechanism according to claim 6, wherein: There is a second gap between adjacent second separation plates, and a first gap between adjacent first separation plates. The top of the second separation plate is aligned with the first gap.

8. The integrated sewage treatment mechanism according to claim 1, wherein: A water outlet pipe is arranged at the top of the sedimentation tank module. The water outlet pipe is arranged around the central pipe, and a water inlet is arranged on the outer peripheral surface of the water outlet pipe.

9. The integrated sewage treatment mechanism according to claim 8, wherein: A mud baffle is arranged between the water outlet pipe and the central pipe.

10. The integrated sewage treatment mechanism according to claim 1, characterized in that: The surface load in the horizontal direction of the sedimentation tank module is less than 0.8 m3 / m2·h.

Images