Tower type sewage biological treatment device

Abstract

The present application relates to sewage treatment technical field, it is a kind of tower type sewage biological treatment device, including reaction tower, the upper end surface of reaction tower is equipped with upper cover plate, the side of reaction tower is equipped with the ladder for repair, the side of reaction tower is equipped with the water inlet pipe for sewage into, the inside upper end portion of reaction tower is equipped with aeration assembly, wherein, aeration assembly includes water-gas mixing structure, aeration assembly below is equipped with the mixing assembly for driving active mud and sewage to be fully mixed reaction, water-gas mixing structure makes sewage flow, to drive mixing assembly work, aeration assembly and mixing assembly between are equipped with impurity removal assembly, impurity removal assembly is used to collect water surface impurities, mixing assembly drives impurity removal assembly work.The present application drives sewage flow by the air flowing in L-shaped air guide pipe, promotes rotary blade rotation, in turn drives helical blade rotation and transmits active mud at the bottom of reaction tower upwards, so that active mud and sewage can be fully contacted and reacted, improve sewage purification efficiency.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology and is a tower-type biological wastewater treatment device. Background Technology

[0002] Wastewater treatment refers to the process of treating and purifying wastewater containing various harmful substances and pollutants. In the course of modern industrial and urbanization development, the discharge of large amounts of wastewater has caused serious environmental pollution; therefore, wastewater treatment has become an important environmental protection task.

[0003] The activated sludge process is a biological wastewater treatment technology that uses organic pollutants in wastewater as a substrate. Under dissolved oxygen conditions, it removes organic matter through continuous cultivation of microbial communities via processes such as coagulation, adsorption, oxidative decomposition, and sedimentation. Traditional activated sludge wastewater treatment processes first cultivate activated sludge in a wastewater tank, then introduce wastewater into the tank, followed by continuous aeration to oxygenate the liquid and promote the decomposition of impurities in the wastewater by the activated sludge. However, in actual treatment, the mass of the activated sludge is greater than the mass of the wastewater, causing the sludge to settle at the bottom of the tank and hindering its reaction with the wastewater, resulting in low purification efficiency. Furthermore, the bubbles produced by ordinary aeration equipment do not fully bind with the wastewater, requiring prolonged aeration to achieve the desired purification effect.

[0004] In view of this, the present invention proposes a tower-type biological wastewater treatment device, which solves the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] The present invention also uses the air flowing in the L-shaped air guide pipe to drive the wastewater to rotate as a whole, thereby driving the rotating blade to rotate, which in turn drives the spiral blade to rotate. When the spiral blade rotates, it conveys the activated sludge at the bottom of the reaction tower upward, so that the activated sludge and wastewater can fully contact and react, thereby improving the wastewater purification efficiency.

[0007] A tower-type biological wastewater treatment device includes a reaction tower with a top cover plate on its upper surface. A ladder for maintenance is provided on one side of the reaction tower, and an inlet pipe for wastewater entry is also provided on one side. An aeration assembly is located at the upper part of the interior of the reaction tower. The aeration assembly includes a water-air mixing structure. Below the aeration assembly is a mixing assembly for thoroughly mixing activated sludge and wastewater. The water-air mixing structure causes wastewater to flow, thereby driving the mixing assembly to operate. A removal assembly is located between the aeration assembly and the mixing assembly to collect surface impurities. The mixing assembly drives the removal assembly to operate.

[0008] As a preferred embodiment of the present invention, the inlet pipe extends into the interior of the reaction tower and is fixedly connected to the distribution pipe, and the distribution pipe is provided with a plurality of holes for dispersing sewage.

[0009] As a preferred embodiment of the present invention, the aeration assembly includes an air inlet pipe, which is fixedly connected to the upper end face of the reaction tower, and a blower is connected to the end of the air inlet pipe away from the reaction tower.

[0010] As a preferred embodiment of the present invention, a first partition is provided below the water distribution pipe. The first partition is fixedly connected to the inner wall of the reaction tower, and the first partition separates the reaction tower into upper and lower parts. The water-air mixing structure is fixedly connected to the first partition.

[0011] As a preferred embodiment of the present invention, the water-air mixing structure is provided in multiple sets, which are distributed in a circular manner on the first partition plate. The water-air mixing structure includes an L-shaped water guide pipe, which is fixedly connected to the first partition plate. The L-shaped water guide pipe extends through the first partition plate to the bottom of the reaction tower. An L-shaped gas guide pipe is fixedly connected inside the L-shaped water guide pipe by a bracket. The lower end of the L-shaped gas guide pipe extends out of the L-shaped water guide pipe.

[0012] In a preferred embodiment of the present invention, the mixing component includes a spiral blade rotatably connected to the bottom of the reaction tower, a rotating rod fixedly connected to the upper end face of the spiral blade, and a rotating blade fixedly connected to the rotating rod.

[0013] In a preferred embodiment of the present invention, the impurity removal assembly includes a fixed pipe, which is fixedly connected to the inside of the reaction tower via a bracket. A rotating column is fixedly connected to the upper end face of the rotating rod, and the rotating column and the fixed pipe are rotatably connected. An inclined disc is fixedly connected to the upper end face of the rotating column via a support rod. An abutment is provided above the inclined disc, and the inclined disc and the abutment abut against each other. A lifting column is fixedly connected to the upper end face of the abutment. The connection point between the abutment and the lifting column is located on one side of the center of the lower end face of the lifting column. The lifting column and the fixed pipe are slidably connected. A lifting rod is fixedly connected to the upper end face of the lifting column, and an impurity removal pipe is fixedly connected to the upper end face of the lifting rod. A notch is provided on the impurity removal pipe, and a drainage hose is fixedly connected to the bottom of the impurity removal pipe. The end of the drainage hose away from the impurity removal pipe extends out of the reaction tower.

[0014] As a preferred embodiment of the present invention, the bottom of the reaction tower is fixedly connected to an activated sludge discharge pipe, a cement separation pipe is provided on one side of the reaction tower, and an exhaust pipe is also provided on one side of the reaction tower. The exhaust pipe is located above the sewage surface and below the first partition.

[0015] In a preferred embodiment of the present invention, the upper end of the L-shaped water guide pipe is lower than the height of the water distribution pipe, the upper end of the L-shaped air guide pipe is higher than the upper end of the L-shaped water guide pipe, and a second partition is provided above the L-shaped air guide pipe. The upper end of the L-shaped air guide pipe passes through the upper surface of the second partition. The second partition is located above the first partition and divides the area above the first partition into upper and lower parts. The second partition is fixedly connected to the inner wall of the reaction tower, and the air inlet pipe is located above the second partition.

[0016] As a preferred embodiment of the present invention, an impeller is provided at the end of the L-shaped air guide pipe away from the water distribution pipe.

[0017] The beneficial effects of this invention are:

[0018] This invention introduces external air into the reaction tower through an air inlet pipe. The wastewater and air then combine at the end of an L-shaped water guide pipe, resulting in a large number of air bubbles in the wastewater. This increases the aeration effect, enriching the wastewater with oxygen, promoting the reaction between the wastewater and activated sludge, and improving wastewater purification efficiency. Simultaneously, the flow of wastewater in the L-shaped water guide pipe and the flow of air in the L-shaped air guide pipe drive the impeller to rotate, breaking up the water bubbles formed by the wastewater and air into smaller bubbles. This allows for more complete combination of oxygen in the activated sludge and wastewater, improving air utilization efficiency and further promoting the reaction between wastewater and activated sludge, accelerating wastewater purification. Furthermore, the air flowing in the L-shaped air guide pipe drives the wastewater to rotate, which in turn drives the rotating impeller, causing the spiral blades to rotate. The rotating spiral blades transport the activated sludge from the bottom of the reaction tower upwards, ensuring sufficient contact and reaction between the activated sludge and wastewater, further improving wastewater purification efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] in:

[0021] Figure 1 A schematic diagram of the overall structure of a tower-type biological wastewater treatment device;

[0022] Figure 2 A schematic diagram of the rear connection structure of a tower-type biological wastewater treatment device;

[0023] Figure 3 A cross-sectional view of a tower-type biological wastewater treatment device;

[0024] Figure 4 This is a schematic diagram of the internal connection structure of the reaction tower in a tower-type biological wastewater treatment device.

[0025] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point A in the middle;

[0026] Figure 6 This is a schematic diagram of the connection structure between the aeration component and the impurity removal component in a tower-type biological wastewater treatment device.

[0027] Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point B;

[0028] Figure 8This is a schematic diagram of the connection structure of a water-air mixing structure, a reaction tower, and a first baffle plate in a tower-type biological wastewater treatment device.

[0029] In the picture:

[0030] 1. Reaction tower; 2. Water inlet pipe; 3. Top cover plate; 4. Ladder;

[0031] 5. Aeration assembly; 51. Air inlet pipe; 52. First baffle plate; 53. Water-air mixing structure; 531. L-shaped water guide pipe; 532. L-shaped air guide pipe; 533. Impeller; 54. Second baffle plate;

[0032] 6. Water distribution pipe;

[0033] 7. Mixing assembly; 71. Rotating rod; 72. Rotating blade; 73. Spiral blade;

[0034] 8. Impurity removal assembly; 81. Fixed pipe; 82. Rotating column; 83. Inclined disc; 84. Joint; 85. Lifting column; 86. Lifting rod; 87. Drain hose; 88. Impurity removal pipe; 89. Notch;

[0035] 9. Activated sludge discharge pipe;

[0036] 10. Cement separation pipe; 11. Exhaust pipe. Detailed Implementation

[0037] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0038] Example 1

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, a tower-type biological wastewater treatment device includes a reaction tower 1, with a top cover plate 3 on the upper surface of the reaction tower 1, a ladder 4 for maintenance on one side of the reaction tower 1, and an inlet pipe 2 for wastewater to enter on one side of the reaction tower 1. An aeration assembly 5 is provided at the upper part of the interior of the reaction tower 1, wherein the aeration assembly 5 includes a water-air mixing structure 53, and a mixing assembly 7 is provided below the aeration assembly 5 for driving the activated sludge and wastewater to fully mix and react. The water-air mixing structure 53 causes the wastewater to rotate, thereby driving the mixing assembly 7 to work. A debris removal assembly 8 is provided between the aeration assembly 5 and the mixing assembly 7. The debris removal assembly 8 is used to collect impurities on the water surface, and the mixing assembly 7 drives the debris removal assembly 8 to work.

[0040] The inlet pipe 2 extends into the interior of the reaction tower 1 and is fixedly connected to the distribution pipe 6. The distribution pipe 6 has multiple holes for dispersing sewage.

[0041] The aeration assembly 5 includes an air inlet pipe 51, which is fixedly connected to the upper end face of the reaction tower 1. A blower is connected to the end of the air inlet pipe 51 away from the reaction tower 1.

[0042] Below the water distribution pipe 6, there is a first partition 52. The first partition 52 is fixedly connected to the inner wall of the reaction tower 1. The first partition 52 separates the reaction tower 1 into upper and lower parts. The water-air mixing structure 53 is fixedly connected to the first partition 52.

[0043] The water-air mixing structure 53 is provided in multiple sets, which are distributed in a circular pattern on the first partition plate 52. The water-air mixing structure 53 includes an L-shaped water guide pipe 531, which is fixedly connected to the first partition plate 52. The L-shaped water guide pipe 531 extends through the first partition plate 52 to the bottom of the reaction tower 1. An L-shaped gas guide pipe 532 is fixedly connected to the L-shaped water guide pipe 531 through a bracket. The lower end of the L-shaped gas guide pipe 532 extends out of the L-shaped water guide pipe 531. An impeller 533 is provided at the lower end of the L-shaped gas guide pipe 532.

[0044] The height of the upper end of the L-shaped water guide pipe 531 is lower than the height of the water distribution pipe 6, and the height of the upper end of the L-shaped air guide pipe 532 is higher than the height of the upper end of the L-shaped water guide pipe 531. A second partition 54 is provided above the L-shaped air guide pipe 532. The upper end of the L-shaped air guide pipe 532 passes through the upper surface of the second partition 54. The second partition 54 is located above the first partition 52. The second partition 54 divides the area above the first partition 52 into upper and lower parts. The second partition 54 is fixedly connected to the inner wall of the reaction tower 1. The air inlet pipe 51 is located above the second partition 54.

[0045] In this embodiment, the filtered wastewater is injected into the reaction tower 1 through the inlet pipe 2. The wastewater first flows into the area above the first partition 52 through the distribution pipe 6. Subsequently, the water level above the first partition 52 continues to rise. At the same time, the external blower is turned on, and external air is introduced into the reaction tower 1 through the air inlet pipe 51. Therefore, the space above the second partition 54 is relatively sealed. Thus, the air in the air inlet pipe 51 will continuously enter the area below the first partition 52 through the L-shaped air guide pipe 532. Meanwhile, as the space between the first partition 52 and the second partition 54 fills with wastewater, the wastewater eventually enters the area below the first partition 52 through the L-shaped water guide pipe 531. The wastewater comes into contact with the activated sludge at the bottom of the reaction tower 1, and a reaction occurs between them. The activated sludge decomposes the oxides in the wastewater, thereby purifying the wastewater.

[0046] It is important to note that wastewater is continuously introduced into the L-shaped water guide pipe 531, while air is continuously introduced into the L-shaped air guide pipe 532. The wastewater and air combine at the end of the L-shaped water guide pipe 531, resulting in a large number of air bubbles in the wastewater, which increases the aeration effect and enriches the wastewater with oxygen. This further promotes the reaction between the wastewater and the activated sludge, improving the wastewater purification effect. Simultaneously, the flow of wastewater in the L-shaped water guide pipe 531 and the flow of air in the L-shaped air guide pipe 532 drive the impeller 533 to rotate. The rotation of the impeller 533 breaks down the water bubbles formed by the wastewater and air into smaller bubbles, allowing for more complete combination of oxygen in the activated sludge and wastewater. This improves air utilization efficiency, further promoting the reaction between the wastewater and the activated sludge and accelerating the wastewater purification process.

[0047] Meanwhile, when the sewage reaches the preset water level, the inlet pipe 2 stops supplying sewage, but the air inlet pipe 51 needs to continuously supply air to increase the aeration effect, thereby purifying the sewage.

[0048] like Figure 3 , Figure 4 , Figure 6 and Figure 8 As shown, the mixing component 7 includes a spiral blade 73, which is rotatably connected to the bottom of the reaction tower 1. A rotating rod 71 is fixedly connected to the upper end face of the spiral blade 73, and a rotating blade 72 is fixedly connected to the rotating rod 71.

[0049] In this embodiment, wastewater continuously flows out of the L-shaped water pipe 531, while air continuously flows out of the L-shaped air pipe 532, causing the wastewater inside the reaction tower 1 to flow as a whole, with the flow direction as follows: Figure 8As shown, the flow of sewage drives the rotating blade 72 to rotate, which in turn drives the rotating rod 71 to rotate. The rotating rod 71 in turn drives the spiral blade 73 to rotate. When the spiral blade 73 rotates, it can transport the activated sludge at the bottom of the reaction tower 1 upwards (the mass of the activated sludge is greater than the mass of the sewage, so the activated sludge accumulates at the bottom of the reaction tower 1. Although aeration through the L-shaped air pipe 532 can disperse the activated sludge, the spiral blade 73 makes the upward transport of the activated sludge more efficient, and the combination of the two has a better effect). This allows the activated sludge and sewage to fully contact and react, improving the sewage purification efficiency.

[0050] like Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, the impurity removal component 8 includes a fixed pipe 81, which is fixedly connected to the inside of the reaction tower 1 by a bracket. A rotating column 82 is fixedly connected to the upper end face of the rotating rod 71. The rotating column 82 and the fixed pipe 81 are rotatably connected. An inclined disc 83 is fixedly connected to the upper end face of the rotating column 82 by a support rod. An abutment 84 is provided above the inclined disc 83, and the inclined disc 83 and the abutment 84 abut against each other. A lifting column 85 is fixedly connected to the upper end face of the abutment 84. The connection point between the abutment 84 and the lifting column 85 is located on one side of the center of the lower end face of the lifting column 85. The lifting column 85 and the fixed pipe 81 are slidably connected. A lifting rod 86 is fixedly connected to the upper end face of the lifting column 85. A cleaning pipe 88 is fixedly connected to the upper end face of the lifting rod 86. A notch 89 is opened on the cleaning pipe 88. A drain hose 87 is fixedly connected to the bottom of the cleaning pipe 88. The end of the drain hose 87 away from the cleaning pipe 88 extends out of the outside of the reaction tower 1.

[0051] The bottom of the reaction tower 1 is fixedly connected to an activated sludge discharge pipe 9. A cement separation pipe 10 is provided on one side of the reaction tower 1. An exhaust pipe 11 is also provided on one side of the reaction tower 1. The exhaust pipe 11 is located above the sewage surface and below the first partition 52.

[0052] In this embodiment, when the rotating rod 71 rotates, it drives the rotating column 82 to rotate. The rotating column 82 then drives the inclined disc 83 to rotate. The rotation of the inclined disc 83 drives the abutment 84 to slide up and down within the fixed pipe 81. The sliding of the abutment 84 causes the lifting column 85 to move up and down. The movement of the lifting column 85 causes the lifting rod 86 to move up and down. The movement of the lifting rod 86 causes the impurity removal pipe 88 to move up and down, thereby causing the notch 89 at the upper end of the impurity removal pipe 89 to move up and down at the sewage level, collecting impurities and some sewage from the sewage surface, which are then discharged through the drain hose 87. Simultaneously, the up-and-down movement of the impurity removal pipe 89 causes the drain hose 87 to move up and down, and the flow of sewage also drives the drain hose 87, thus accelerating the drainage efficiency of the drain hose 87.

[0053] After a period of aeration, the air inlet pipe 51 stops supplying air, allowing the wastewater and activated sludge to settle and separate. The purified wastewater and excess activated sludge are discharged through the cement separation pipe 10, and the activated sludge can also be removed through the activated sludge discharge pipe 9.

[0054] The workflow is as follows:

[0055] First, activated sludge is cultivated inside reaction tower 1. Once the activated sludge is successfully cultivated, the wastewater purification process can begin. Wastewater is first introduced through inlet pipe 2 above partition 52. As the space between partition 52 and partition 54 fills with wastewater, it eventually enters the bottom of reaction tower 1 through L-shaped guide pipe 531. The wastewater reacts with the activated sludge at the bottom of reaction tower 1, causing the activated sludge to decompose impurities in the wastewater, thus purifying it. Simultaneously, external air is introduced into reaction tower 1 through air inlet pipe 51. The air in air inlet pipe 51 continuously enters below partition 52 through L-shaped guide pipe 532. The wastewater and air combine at the end of L-shaped guide pipe 531, resulting in a large number of air bubbles in the wastewater, increasing aeration and enriching the wastewater with oxygen. This further promotes the reaction between the wastewater and the activated sludge, improving the wastewater purification effect. Simultaneously, the flow of sewage in the L-shaped water guide pipe 531 and the flow of air in the L-shaped air guide pipe 532 drive the impeller 533 to rotate. The rotation of the impeller 533 breaks down the water bubbles formed by the sewage and air into smaller bubbles, allowing the oxygen in the activated sludge and sewage to combine more fully, improving air utilization efficiency, and thus further promoting the reaction between sewage and activated sludge, accelerating the sewage purification efficiency. When the sewage reaches the preset water level, the inlet pipe 2 stops supplying sewage, but the air inlet pipe 51 needs to continuously supply air to increase the aeration effect, thereby purifying the sewage. During the sewage inflow and continuous aeration process, air continuously flows out of the L-shaped air guide pipe 532, causing the sewage in the reaction tower 1 to flow as a whole. The sewage flow drives the rotating blade 72 to rotate, which in turn drives the rotating rod 71 to rotate, which in turn drives the spiral blade 73 to rotate. The rotation of the spiral blade 73 can transport the activated sludge at the bottom of the reaction tower 1 upwards, allowing the activated sludge and sewage to fully contact and react, improving the sewage purification efficiency. During continuous aeration, the rotating rod 71 rotates, causing the rotating column 82 to rotate, which in turn causes the notch 89 at the upper end of the impurity removal pipe 89 to move up and down at the sewage level, collecting impurities and some sewage from the sewage surface, which are then discharged through the drain hose 87.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tower type sewage biological treatment device, comprising a reaction tower (1), an upper cover plate (3) arranged on the upper end surface of the reaction tower (1), a crawling ladder (4) arranged on one side of the reaction tower (1) for maintenance, and a water inlet pipe (2) arranged on one side of the reaction tower (1) for sewage inlet, characterized in that, The upper end of the inside of the reaction tower (1) is provided with an aeration assembly (5), wherein the aeration assembly (5) comprises a water-air mixing structure (53), and a mixing assembly (7) for fully mixing and reacting the activated sludge and sewage is arranged below the aeration assembly (5); the water-air mixing structure (53) enables the sewage to flow, thereby driving the mixing assembly (7) to work; a decontamination assembly (8) for collecting water surface impurities is arranged between the aeration assembly (5) and the mixing assembly (7), and the mixing assembly (7) drives the decontamination assembly (8) to work; The water inlet pipe (2) extends into the reaction tower (1) and is fixedly connected with the water distribution pipe (6); A first partition plate (52) is arranged below the water distribution pipe (6) and is fixedly connected to the inner wall of the reaction tower (1); The water-air mixing structure (53) comprises a plurality of L-shaped water guide pipes (531) arranged in a circular manner on the first partition plate (52), the L-shaped water guide pipes (531) are fixedly connected to the first partition plate (52) and extend through the first partition plate (52) to the bottom of the reaction tower (1), and L-shaped air guide pipes (532) are fixedly connected to the L-shaped water guide pipes (531) through supports, and the lower ends of the L-shaped air guide pipes (532) do not extend out of the L-shaped water guide pipes (531); The mixing assembly (7) comprises a spiral blade (73) which is rotatably connected to the bottom of the reaction tower (1), the upper end surface of the spiral blade (73) is fixedly connected with a rotating rod (71), and the rotating rod (71) is fixedly connected with a rotating blade (72).

2. The tower sewage biological treatment device as claimed in claim 1, wherein A plurality of holes for dispersing and discharging the sewage are formed in the water distribution pipe (6).

3. The tower sewage biological treatment device as claimed in claim 2, wherein The aeration assembly (5) comprises an air inlet pipe (51) which is fixedly connected to the upper end surface of the reaction tower (1) and is connected with a blower at the end away from the reaction tower (1).

4. The tower sewage biological treatment device as claimed in claim 3, wherein The first partition plate (52) divides the reaction tower (1) into two parts, and the water-air mixing structure (53) is fixedly connected to the first partition plate (52).

5. The tower sewage biological treatment device as claimed in claim 4, wherein The impurity removing assembly (8) comprises a fixed tube (81) fixedly connected in the inside of the reaction tower (1) through a support, the upper end surface of the rotating rod (71) is fixedly connected with a rotating column (82), the rotating column (82) is rotationally connected with the fixed tube (81), the upper end surface of the rotating column (82) is fixedly connected with an inclined disc (83) through a support rod, an abutting head (84) is arranged above the inclined disc (83), the inclined disc (83) abuts against the abutting head (84), the upper end surface of the abutting head (84) is fixedly connected with a lifting column (85), the connecting point of the abutting head (84) and the lifting column (85) is located on one side of the center of the lower end surface of the lifting column (85), the lifting column (85) is slidingly connected with the fixed tube (81), the upper end surface of the lifting column (85) is fixedly connected with a lifting rod (86), the upper end surface of the lifting rod (86) is fixedly connected with an impurity removing tube (88), a notch (89) is formed in the impurity removing tube (88), the bottom of the impurity removing tube (88) is fixedly connected with a drainage hose (87), and the end of the drainage hose (87) away from the impurity removing tube (88) extends out of the outside of the reaction tower (1).

6. The tower sewage biological treatment device as claimed in claim 4, wherein The bottom of the reaction tower (1) is fixedly connected with an active mud discharging pipe (9), one side of the reaction tower (1) is provided with a cement separating pipe (10), and one side of the reaction tower (1) is also provided with an exhaust pipe (11).

7. The tower sewage biological treatment device as claimed in claim 5, wherein The height of the upper end of the L-shaped water guide pipe (531) is lower than the height of the water separating pipe (6), the height of the upper end of the L-shaped gas guide pipe (532) is higher than the height of the upper end of the L-shaped water guide pipe (531), the upper end of the L-shaped gas guide pipe (532) penetrates through the upper end surface of the second baffle (54), the second baffle (54) is located above the first baffle (52), the second baffle (54) divides the space above the first baffle (52) into two parts, the second baffle (54) is fixedly connected to the inner wall of the reaction tower (1), and the air inlet pipe (51) is located above the second baffle (54).

8. The tower sewage biological treatment device as claimed in claim 5, wherein The end of the L-shaped gas guide pipe (532) away from the water separating pipe (6) is provided with an impeller (533).

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