Sewage treatment system

Abstract

The utility model provides a sewage treatment system. The sewage treatment system comprises an ABR (Anaerobic Baffled Reactor) and an MBR (Membrane Bioreactor), the aeration assembly is located at the bottom of the MBR reactor, the aeration assembly comprises a flow dividing pipe and a plurality of aeration pipes, the aeration pipes are detachably connected relative to the flow dividing pipe, the flow dividing pipe is provided with connecting ports connected with the aeration pipes, and the flow dividing pipe is connected with a gas supply device so that gas can flow into the aeration pipes through the flow dividing pipe; aeration holes are formed in the aeration pipe; each sealing assembly comprises a sealing plug and a sliding way, the sliding ways are arranged on the flow dividing pipe, the sealing plugs are movably arranged on the sliding ways, the multiple sealing assemblies are arranged, the sliding ways, the sealing plugs and the connecting ports are arranged in a one-to-one correspondence mode, and the sealing plugs are moved to block the connecting ports. The sewage treatment system disclosed by the utility model solves the technical problem that the operation efficiency of the whole sewage treatment system can be influenced when individual aeration pipes in the reactor in the prior art fail.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment equipment, and particularly relates to a sewage treatment system. Background Art

[0002] With the rapid development of technology, the requirements for water quality in sewage treatment are also getting higher and higher. The ABR-MBR integrated reactor, as an advanced sewage treatment technology, combines ABR (Anaerobic Baffled Reactor) and MBR (Membrane Bio-Reactor), and is widely used in the field of sewage treatment due to its advantages such as high treatment efficiency, stable effluent quality, small floor area, low operating energy consumption, strong adaptability, high degree of automation, and convenient maintenance.

[0003] Under anaerobic conditions, the ABR reactor divides the reactor into multiple compartments through a series of baffle plates, enabling the organic matter in the sewage to be gradually degraded. During the operation of the MBR reactor, the air supply system provides the necessary oxygen environment for the growth and activities of microorganisms by delivering oxygen into the aeration pipes, thereby improving the activity of microorganisms and accelerating the degradation rate of organic matter.

[0004] The existing aeration system is integrated. When a problem occurs in one aeration pipe, either the entire aeration component is removed for maintenance, or the damaged aeration pipe is ignored and the aeration system is continued to be used to deliver oxygen into the MBR reactor. However, removing the entire aeration component directly affects the use of the MBR reactor, thereby affecting the sewage treatment efficiency; leaving the damaged aeration pipe unattended not only occupies the accommodation space of the reactor but also affects the aeration volume of the aeration system, thereby affecting the degradation rate of organic matter.

[0005] Therefore, the existing technology needs to be further developed. Summary of the Utility Model

[0006] The purpose of the utility model is to overcome the above technical deficiencies and provide a sewage treatment system to solve the technical problem that when an individual aeration pipe in the reactor fails in the related technology, it will affect the operation efficiency of the entire sewage treatment system.

[0007] To achieve the above technical objectives, the present utility model adopts the following technical solutions: A sewage treatment system is provided, including: an ABR reactor, which is composed of multiple reaction chambers; an MBR reactor, which is connected to the ABR reactor; an aeration assembly, which is located at the bottom of the MBR reactor. The aeration assembly includes a shunt pipe and multiple aeration pipes. Each aeration pipe is detachably connected to the shunt pipe. Connection ports for connecting each aeration pipe are provided on the shunt pipe. The shunt pipe is connected to a gas supply device so that gas flows through the shunt pipe into each aeration pipe. Aeration holes are provided on the aeration pipes; a sealing assembly, which includes a sealing plug and a slideway. The slideway is provided on the shunt pipe. The sealing plug is movably arranged on the slideway. There are multiple sealing assemblies. Each slideway, each sealing plug and each connection port are arranged in one-to-one correspondence. Move the sealing plug to block the connection port.

[0008] Further, multiple aeration pipes are arranged in at least two rows in sequence along the length direction of the shunt pipe, and the aeration pipes on adjacent two rows are arranged in a staggered manner.

[0009] Further, the slideway includes a first slideway and a second slideway. The first slideway and the second slideway are respectively located on both sides of the connection port. Both sides of the sealing plug are respectively located in the first slideway and the second slideway.

[0010] Further, the first slideway includes a first slide plate and a second slide plate. One end of the first slide plate is connected to the shunt pipe, and the other end of the first slide plate is connected to the second slide plate. There is an included angle between the first slide plate and the second slide plate; the second slideway includes a third slide plate and a fourth slide plate. One end of the third slide plate is connected to the shunt pipe, and the other end of the third slide plate is connected to the fourth slide plate. There is an included angle between the third slide plate and the fourth slide plate; the second slide plate and the fourth slide plate are arranged oppositely.

[0011] Further, the sealing assembly further includes an arc plate. The arc plate is movable in the slideway. The arc plate is located between the slideway and the sealing plug. Both ends of the arc plate are respectively abutted against the second slide plate and the fourth slide plate; when the sealing plug blocks the connection port, the arc plate abuts against the sealing plug to reinforce the sealing of the connection port by the sealing plug.

[0012] Further, stoppers are provided at the ends of both the first slideway and the second slideway. When the arc plate moves to the ends of the first slideway and the second slideway, the two stoppers block the movement of the arc plate; there is a gap between the stopper and the shunt pipe to allow water to flow out from the gap.

[0013] Further, the reaction chamber includes a first reaction chamber, a second reaction chamber, a third reaction chamber and a fourth reaction chamber. The first reaction chamber, the second reaction chamber, the third reaction chamber and the fourth reaction chamber are connected in sequence. The first reaction chamber is connected to the sewage tank, and the fourth reaction chamber is connected to the MBR reactor.

[0014] Further, a first reflux pump is arranged between the second reaction chamber and the fourth reaction chamber. The first reflux pump refluxes the sewage in the fourth reaction chamber back into the second reaction chamber to supplement the carbon source for the second reaction chamber.

[0015] Further, the sewage treatment system further includes a nitrification liquid tank. A water outlet pump is also arranged between the MBR reactor and the nitrification liquid tank. The water in the MBR reactor is sent into the nitrification liquid tank through the water outlet pump.

[0016] Further, a second reflux pump is arranged between the nitrification liquid tank and the third reaction chamber. The second reflux pump sends the nitrification liquid in the nitrification liquid tank into the third reaction chamber to achieve denitrifying phosphorus removal.

[0017] Beneficial effects:

[0018] 1. The aeration pipe is set as a detachable structure, which is convenient for the replacement and maintenance of the aeration pipe; a sealing component is set to block the connection port between the faulty aeration pipe and the shunt pipe, so that the aeration component can continue to be used without stopping the operation of the entire system, greatly reducing the maintenance time and cost, and ensuring the operation efficiency of the entire sewage treatment system.

[0019] 2. The sewage in the fourth reaction chamber of the ABR reactor is refluxed to the second reaction chamber of the ABR reactor through the first reflux pump, supplementing the carbon source.

[0020] 3. The nitrification liquid in the nitrification liquid tank is sent into the third reaction chamber of the ABR reactor through the second reflux pump, and denitrifying phosphorus removal is achieved by using an anoxic environment, further improving the nitrogen and phosphorus removal ability of the system and making the effluent water quality more stable. Description of the drawings

[0021] Figure 1 is a schematic structural diagram of the sewage treatment system adopted in the embodiment of the present utility model;

[0022] Figure 2 is a schematic structural diagram of the aeration component of the sewage treatment system adopted in the embodiment of the present utility model;

[0023] Figure 3 is a schematic structural diagram of the sealing plug of the sewage treatment system adopted in the embodiment of the present utility model;

[0024] Figure 4 is a schematic structural diagram of the first slideway and the second slideway of the sewage treatment system adopted in the embodiment of the present utility model;

[0025] Figure 5 is a usage state diagram of the arc-shaped plate of the sewage treatment system adopted in the embodiment of the present utility model;

[0026] Figure 6It is a cross-sectional view of the sealing assembly of the sewage treatment system adopted in the embodiment of the present utility model.

[0027] Among them, the above-mentioned drawings include the following reference numerals:

[0028] 1. ABR reactor; 11. First reaction chamber; 12. Second reaction chamber; 13. Third reaction chamber; 14. Fourth reaction chamber; 2. MBR reactor; 3. Aeration assembly; 31. Shunt pipe; 311. Connection port; 312. Air intake port; 32. Aeration pipe; 321. Aeration holes; 4. Gas supply device; 5. Sealing assembly; 51. Sealing plug; 52. First slideway; 521. First slide plate; 522. Second slide plate; 53. Second slideway; 531. Third slide plate; 532. Fourth slide plate; 54. Arc plate; 55. Stopper; 56. Gap; 7. Sewage tank; 81. First reflux pump; 82. Second reflux pump; 83. Outlet water pump; 84. Inlet water pump; 9. Nitrification liquid tank. Detailed implementation manners

[0029] In order to enable those skilled in the art to better understand the solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0030] According to the embodiment of the present utility model, a sewage treatment system is provided. Please refer to Figures 1 to 6, including: an ABR reactor 1, which is composed of multiple reaction chambers; an MBR reactor 2, which is connected to the ABR reactor 1; an aeration assembly 3, which is located at the bottom of the MBR reactor 2. The aeration assembly 3 includes a shunt pipe 31 and multiple aeration pipes 32. Each aeration pipe 32 is detachably connected to the shunt pipe 31. A connection port 311 for connecting each aeration pipe 32 is provided on the shunt pipe 31. The shunt pipe 31 is connected to a gas supply device 4 so that gas flows through the shunt pipe 31 into each aeration pipe 32. Aeration holes 321 are provided on the aeration pipes 32; a sealing assembly 5, which includes a sealing plug 51 and a slideway. The slideway is provided on the shunt pipe 31. The sealing plug 51 is movably arranged on the slideway. There are multiple sealing assemblies 5. Each slideway, each sealing plug 51 and each connection port 311 are arranged in one-to-one correspondence. Move the sealing plug 51 to block the connection port 311. In this embodiment, the ABR reactor 1 and the MBR reactor 2 are combined to realize the integration of the ABR-MBR reaction, effectively saving the occupied space. The gas supply device 4 is connected to the shunt pipe 31 through a gas connection port 312. The gas is dispersed from the shunt pipe 31 to each aeration pipe 32 and then discharged from the aeration holes 321 on each aeration pipe 32. The aeration pipes 32 are arranged at intervals, which is beneficial to improving the aeration uniformity. By providing detachable aeration pipes 32, when an individual aeration pipe 32 fails, it is removed and the connection port 311 is blocked with a sealing plug 51. When the aeration pipe 32 is connected to the shunt pipe 31, a sealing ring can be used to reinforce the seal of the connection port 311. The sealing plug 51 slides on the slideway, which can not only block or open the connection port 311, but also fix it by the slideway, thereby enhancing the sealing effect, ensuring the normal operation of other aeration pipes 32, and thus ensuring the operation efficiency of the entire sewage treatment system.

[0031] Refer to Figure 2 , Figure 3 and Figure 5 , in the sewage treatment system of this embodiment, multiple aeration pipes 32 are arranged in at least two rows in sequence along the length direction of the shunt pipe 31, and the aeration pipes 32 on adjacent two rows are arranged in a staggered manner. The staggered aeration pipes 32 can ensure a more uniform aeration distribution in the MBR reactor 2.

[0032] Refer to Figure 3 and Figure 4, in the sewage treatment system of this embodiment, the slideway includes a first slideway 52 and a second slideway 53. The first slideway 52 and the second slideway 53 are respectively located on both sides of the connection port 311. Both sides of the sealing plug 51 are respectively located in the first slideway 52 and the second slideway 53. The sealing plug 51 is tightly constrained by the slideways on both sides (the first slideway 52 and the second slideway 53), and can maintain close contact with the connection port 311 during the movement, thereby effectively preventing gas from leaking from the connection port during aeration. By sliding the sealing plug 51 on the slideway, it is convenient to block or open the connection port 311. When the aeration pipe needs to be replaced or repaired, the sealing plug 51 can also be quickly moved away, simplifying the operation process and improving the replacement efficiency.

[0033] Refer to Figure 4 , in the sewage treatment system of this embodiment, the first slideway 52 includes a first slide plate 521 and a second slide plate 522. One end of the first slide plate 521 is connected to the shunt pipe 31, and the other end of the first slide plate 521 is connected to the second slide plate 522. There is an included angle between the first slide plate 521 and the second slide plate 522; the second slideway 53 includes a third slide plate 531 and a fourth slide plate 532. One end of the third slide plate 531 is connected to the shunt pipe 31, and the other end of the third slide plate 531 is connected to the fourth slide plate 532. There is an included angle between the third slide plate 531 and the fourth slide plate 532; the second slide plate 522 and the fourth slide plate 532 are arranged opposite to each other. The sealing plug 51 is embedded in the slideway and is in close contact with the second slide plate 522 and the fourth slide plate 532. Since there is an included angle between the first slide plate 521 and the second slide plate 522 and an included angle between the third slide plate 531 and the fourth slide plate 532, the sealing plug 51 can better fit on the shunt pipe 31 when being blocked by the outside world, thereby improving the sealing performance.

[0034] Refer to Figure 5 and Figure 6 , in the sewage treatment system of this embodiment, the sealing assembly 5 further includes an arc-shaped plate 54. The arc-shaped plate 54 is movable in the slideway. The arc-shaped plate 54 is located between the slideway and the sealing plug 51. Both ends of the arc-shaped plate 54 are respectively in contact with the second slide plate 522 and the fourth slide plate 532; when the sealing plug 51 blocks the connection port 311, the arc-shaped plate 54 is in contact with the sealing plug 51 to reinforce the sealing of the sealing plug 51 to the connection port 311. The first slideway 52 and the second slideway 53 fix both sides of the sealing plug 51. Due to the impact force of the gas in the shunt pipe 31, it is easy to wash off the sealing plug 51. Therefore, an arc-shaped plate 54 is further provided between the sealing plug 51 and the slideway. When the sealing plug 51 moves to the position of blocking the connection port 311, the arc-shaped plate 54 is in contact with the sealing plug 51, forming an additional support and pressing effect, further strengthening the sealing effect between the sealing plug 51 and the connection port 311, effectively preventing gas leakage, and ensuring the normal operation of the aeration system.

[0035] Refer toFigure 6 , in the sewage treatment system of this embodiment, stoppers 55 are provided at the ends of the first slideway 52 and the second slideway 53. When the arc-shaped plate 54 moves to the ends of the first slideway 52 and the second slideway 53, the two stoppers 55 block the movement of the arc-shaped plate 54; there is a gap 56 between the stopper 55 and the shunt pipe 31, so that water flows out from the gap 56. Through the blocking effect of the stopper 55, the movement position of the arc-shaped plate 54 can be accurately controlled, ensuring that the arc-shaped plate 54 does not exceed the predetermined range during the movement. The gap 56 between the stopper 55 and the shunt pipe 31 allows water or sludge attached to the wall of the shunt pipe 31 to flow out from this gap 56, avoiding affecting the movement of the arc-shaped plate 54.

[0036] Refer to Figure 1 , in the sewage treatment system of this embodiment, the reaction chamber includes a first reaction chamber 11, a second reaction chamber 12, a third reaction chamber 13 and a fourth reaction chamber 14. The first reaction chamber 11, the second reaction chamber 12, the third reaction chamber 13 and the fourth reaction chamber 14 are connected in sequence. The first reaction chamber 11 is connected to the sewage tank 7, and the fourth reaction chamber 14 is connected to the MBR reactor 2. The sewage in the sewage tank 7 is transported to the first reaction chamber 11 through the feed water pump 84. The first reaction chamber 11 and the second reaction chamber 12 are in an anaerobic environment, and the third reaction chamber 13 and the fourth reaction chamber 14 are in an anoxic environment. Through the synergistic effect of multiple reaction chambers, multi-stage treatment of sewage can be achieved.

[0037] Refer to Figure 1 , in the sewage treatment system of this embodiment, a first reflux pump 81 is provided between the second reaction chamber 12 and the fourth reaction chamber 14. The first reflux pump 81 returns the sewage in the fourth reaction chamber 14 to the second reaction chamber 12 to supplement the carbon source to the second reaction chamber 12. The carbon source is a necessary nutrient for the growth and metabolism of microorganisms. By using the first reflux pump 81 to return the sewage rich in organic matter from the fourth reaction chamber 14 to the second reaction chamber 12, an additional carbon source is provided for the microorganisms in the second reaction chamber 12. The organic matter in the refluxed sewage can also combine with phosphate to form precipitates, which helps to remove phosphorus.

[0038] Refer to Figure 1 , in the sewage treatment system of this embodiment, the sewage treatment system further includes a nitrification liquid tank 9. An outlet water pump 83 is also provided between the MBR reactor 2 and the nitrification liquid tank 9. The water in the MBR reactor 2 is sent into the nitrification liquid tank 9 through the outlet water pump 83. Due to the limitations of the biomass and environmental conditions in the MBR reactor 2, the nitrification reaction may not be able to proceed completely. Sending the water in the MBR reactor 2 into the nitrification liquid tank 9 through the outlet water pump 83 can further promote the nitrification reaction. The nitrification liquid tank 9 usually has environmental conditions more suitable for the growth of nitrifying bacteria (such as higher dissolved oxygen concentration, longer hydraulic retention time, etc.), thereby improving the removal efficiency of ammonia nitrogen.

[0039] Referring to Figure 1 , in the sewage treatment system of this embodiment, a second reflux pump 82 is provided between the nitrification liquid tank 9 and the third reaction chamber 13. The second reflux pump 82 sends the nitrification liquid in the nitrification liquid tank 9 into the third reaction chamber 13 to achieve denitrifying phosphorus removal. The third reaction chamber 13 is an anoxic environment, providing sufficient nitrate substrates for denitrifying bacteria and promoting the progress of the denitrification reaction. The denitrifying bacteria use nitrate as an electron acceptor and reduce nitrate to nitrogen gas under anoxic conditions, while removing nitrogen from the sewage. The design of the nitrification liquid reflux system makes the nitrogen cycle in the sewage treatment system more stable and reliable. By controlling the reflux ratio and reaction conditions, the balance and stability of each biological reaction process in the system can be maintained.

[0040] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of this application are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of this application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0041] Optionally, the specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be elaborated here.

[0042] The serial numbers of the above embodiments of this application are only for description and do not represent the advantages or disadvantages of the embodiments.

[0043] In the above embodiments of this application, the descriptions of each embodiment have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0044] The above is only the preferred embodiment of this application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of this application, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of this application.

Claims

1. A sewage treatment system, characterized in that, Comprising: An ABR reactor (1), which is composed of a plurality of reaction chambers; An MBR reactor (2), which is connected to the ABR reactor (1); An aeration assembly (3), which is located at the bottom of the MBR reactor (2). The aeration assembly (3) includes a shunt pipe (31) and a plurality of aeration pipes (32). Each of the aeration pipes (32) is detachably connected to the shunt pipe (31). A connection port (311) for connecting each of the aeration pipes (32) is provided on the shunt pipe (31). The shunt pipe (31) is connected to a gas supply device (4) so that gas flows through the shunt pipe (31) into each of the aeration pipes (32). Aeration holes (321) are provided on the aeration pipes (32); A sealing assembly (5), which includes a sealing plug (51) and a slideway. The slideway is provided on the shunt pipe (31). The sealing plug (51) is movably arranged on the slideway. There are a plurality of the sealing assemblies (5). Each of the slideways, each of the sealing plugs (51) and each of the connection ports (311) are arranged in one-to-one correspondence. The sealing plug (51) is moved to block the connection port (311).

2. The sewage treatment system according to claim 1, wherein The plurality of aeration pipes (32) are arranged in at least two rows in sequence along the length direction of the shunt pipe (31), and the aeration pipes (32) on adjacent two rows are arranged in a staggered manner.

3. The sewage treatment system according to claim 2, characterized in that, The slideway includes a first slideway (52) and a second slideway (53). The first slideway (52) and the second slideway (53) are respectively located on both sides of the connection port (311). Both sides of the sealing plug (51) are respectively located in the first slideway (52) and the second slideway (53).

4. The sewage treatment system according to claim 3, characterized in that, The first slideway (52) includes a first slide plate (521) and a second slide plate (522). One end of the first slide plate (521) is connected to the shunt pipe (31), and the other end of the first slide plate (521) is connected to the second slide plate (522). An included angle is formed between the first slide plate (521) and the second slide plate (522). The second slideway (53) includes a third slide plate (531) and a fourth slide plate (532). One end of the third slide plate (531) is connected to the shunt pipe (31), and the other end of the third slide plate (531) is connected to the fourth slide plate (532). An included angle is formed between the third slide plate (531) and the fourth slide plate (532). The second slide plate (522) and the fourth slide plate (532) are arranged oppositely.

5. The sewage treatment system according to claim 4, wherein The sealing assembly (5) further includes an arc-shaped plate (54) which is movable within the slideway. The arc-shaped plate (54) is located between the slideway and the sealing plug (51). Both ends of the arc-shaped plate (54) are in contact with the second slide plate (522) and the fourth slide plate (532) respectively. When the sealing plug (51) seals the connection port (311), the arc-shaped plate (54) is in contact with the sealing plug (51) to reinforce the sealing of the connection port (311) by the sealing plug (51).

6. The sewage treatment system according to claim 5, wherein Blocks (55) are provided at the ends of both the first slideway (52) and the second slideway (53). When the arc-shaped plate (54) moves to the ends of the first slideway (52) and the second slideway (53), the two blocks (55) block the movement of the arc-shaped plate (54). There is a gap (56) between the block (55) and the shunt pipe (31) to allow water to flow out from the gap (56).

7. The sewage treatment system according to claim 1, characterized in that The reaction chamber includes a first reaction chamber (11), a second reaction chamber (12), a third reaction chamber (13) and a fourth reaction chamber (14). The first reaction chamber (11), the second reaction chamber (12), the third reaction chamber (13) and the fourth reaction chamber (14) are connected in sequence. The first reaction chamber (11) is connected to the sewage tank (7), and the fourth reaction chamber (14) is connected to the MBR reactor (2).

8. The sewage treatment system according to claim 7, wherein, A first reflux pump (81) is provided between the second reaction chamber (12) and the fourth reaction chamber (14). The first reflux pump (81) refluxes the sewage in the fourth reaction chamber (14) into the second reaction chamber (12) to supplement the second reaction chamber (12) with a carbon source.

9. The sewage treatment system according to claim 8, characterized in that, The sewage treatment system further includes a nitrification liquid tank (9). A water outlet pump (83) is also provided between the MBR reactor (2) and the nitrification liquid tank (9). The water in the MBR reactor (2) is sent into the nitrification liquid tank (9) through the water outlet pump (83).

10. The sewage treatment system according to claim 9, wherein, A second reflux pump (82) is provided between the nitrification liquid tank (9) and the third reaction chamber (13). The second reflux pump (82) sends the nitrification liquid in the nitrification liquid tank (9) into the third reaction chamber (13) to achieve denitrifying phosphorus removal.

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