Autotrophic denitrification nitrogen removal sewage treatment equipment and method thereof

Abstract

The invention discloses autotrophic denitrification nitrogen removal sewage treatment equipment and a method thereof, and belongs to the field of sewage treatment. Autotrophic denitrification nitrogen removal sewage treatment equipment comprises a reaction box, the top of the reaction box is fixedly connected with a liquid inlet, the interior of the reaction box is fixedly connected with a filter screen, the equipment further comprises a stirring mechanism, the stirring mechanism rotates on the inner top wall of the reaction box through a bearing, and the end of the stirring mechanism penetrates through the reaction box to extend out; the stirring device is used for stirring sewage in the reaction box; the crushing mechanism is mounted on the surface of the stirring mechanism and is used for crushing large particles in the sewage; the collecting mechanism is arranged on one side of the reaction box and is used for collecting the crushed particles; the knocking mechanism is fixed at the bottom of the stirring mechanism; according to the device and the method, better denitrification treatment of microorganisms in the process of nitration reaction of sewage is achieved, the situation that particle impurities are accumulated and cannot be separated is prevented, the water pollution control effect is achieved, and the device and the method have good operability.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly to an autotrophic denitrification sewage treatment device and method thereof. Background Art

[0002] Autotrophic denitrification is a process in which autotrophic microorganisms reduce nitrates or nitrites in sewage to nitrogen gas, playing an important role in water pollution treatment. In contrast, the heterotrophic denitrification process requires an organic carbon source, while autotrophic denitrification can save this cost and reduce sludge production. An autotrophic denitrification water pollution treatment device usually includes an anoxic tank, a loading cylinder and other auxiliary structures, which are designed to create an environment suitable for the growth of autotrophic denitrifying microorganisms and achieve efficient denitrification.

[0003] For example, in the prior art, the patent with the Chinese patent authorization number CN115520956A, titled "A Denitrification Device for Municipal Domestic Sewage and Its Denitrification Method", this device includes a mounting frame, at least one set of reaction barrels symmetrically installed on the mounting frame, for connecting... Among them, the bath solution placed in the main pipe is used to heat the sleeve, avoiding the temperature of the alkaline solution in the sleeve being too high by the heating pipe, thus avoiding the alkaline solution from being in a boiling state, and further avoiding the overflow of the solution.

[0004] Another example is the prior art, the patent with the Chinese patent authorization number CN116161790A, titled "A Method and Device for Efficient Denitrification and Simultaneous Surplus Sludge Reduction of Improved Domestic Sewage".

[0005] However, the above patents still have deficiencies. During the treatment of water pollution, due to a large amount of particulate impurities in the sewage, during the nitrification reaction of microorganisms to water pollution, the particulate impurities accumulate together and cannot be better denitrified, and further do not have good operability. Summary of the Invention

[0006] The purpose of the present invention is to solve the above problems in the prior art, and propose an autotrophic denitrification sewage treatment device.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions: An autotrophic denitrification sewage treatment device includes a reaction tank. A liquid inlet is fixedly connected to the top of the reaction tank. A filter screen is fixedly connected inside the reaction tank. It further includes: a stirring mechanism that rotates through a bearing on the inner top wall of the reaction tank and its end extends outside the reaction tank for stirring the sewage inside the reaction tank; a crushing mechanism installed on the surface of the stirring mechanism for crushing larger particles in the sewage; a collection mechanism arranged on one side of the reaction tank for collecting the crushed particles; and a knocking mechanism fixed to the bottom of the stirring mechanism for knocking and vibrating the bottom of the filter screen.

[0008] Preferably, the stirring mechanism includes a driving shaft that rotates through a bearing on the inner top wall of the reaction tank. A driving component is fixedly connected to the reaction tank, and the driving component is used to drive the end of the driving shaft. Stirring rods are fixedly connected to the surface of the driving shaft, and the stirring rods are fitted directly above the filter screen.

[0009] Preferably, the crushing mechanism includes a connecting frame that rotates through a bearing on the surface of the driving shaft. A support frame is fixedly connected to one side of the connecting frame. A crushing roller is rotatably connected inside the support frame through a bearing. A driving component is arranged inside the connecting frame for driving the crushing roller.

[0010] Preferably, the knocking mechanism includes a support rod fixed to the inner wall of the reaction tank. A sliding rod is slidably connected inside the support rod. A connecting plate is fixedly connected to the end of the sliding rod. A disc cam is fitted on the surface of the connecting plate. The end of the disc cam is fixedly connected to the bottom of the driving shaft. A return spring is sleeved on the surface of the sliding rod, and the two ends of the return spring are respectively fixedly connected to the support rod and the disc cam.

[0011] Preferably, the collection mechanism includes a collection cylinder arranged on one side of the reaction tank. A connecting pipe and a discharge pipe are respectively connected and communicated on one side of the reaction tank. The end of the connecting pipe is connected and communicated with the collection cylinder. The end of the discharge pipe is connected and communicated at the bottom of the collection cylinder. A filter cylinder is arranged inside the collection cylinder, and a connecting cover is connected by thread inside the collection cylinder.

[0012] Preferably, the stirring mechanism further includes an aggregate cylinder fixed to the top of the reaction tank. The discharge port of the aggregate cylinder penetrates to the top of the driving shaft. A number of discharge holes are provided on the surface of the driving shaft, and the discharge holes are located directly above the stirring rods.

[0013] Preferably, the driving component includes a first bevel gear fixed to the end of the crushing roller. A second bevel gear is meshed with the surface of the first bevel gear. The second bevel gear rotates inside the connecting frame through a bearing. A diamond column penetrates through the inside of the second bevel gear. One end of the diamond column is fixedly connected with a first gear disk. A second gear disk is meshed with the surface of the first gear disk. The second gear disk is fixed to the surface of the driving shaft.

[0014] Preferably, a knocking head is fixedly connected to the top of the sliding rod. The top of the knocking head is made of metal.

[0015] Preferably, two flow guiding plates are fixedly connected to the front of the driving component. The two flow guiding plates are located in front of the crushing roller.

[0016] A method for using an autotrophic denitrifying sewage treatment device mainly includes the following steps: S1. When sewage needs to be denitrified, the operator first injects the sewage into the reaction tank through the liquid inlet in the reaction tank, and then it comes into contact with the microorganisms inside the reaction tank, so that the sewage in the reaction tank and the microorganisms undergo a nitrification reaction. Through the nitrification reaction, the nitrates or nitrites in the sewage are denitrified. Then, under the setting of the filter screen, it can filter the particles in the sewage, making the larger ones accumulate on the surface of the filter screen. Then, driven by the stirring mechanism, it can scrape the larger particles on the surface of the filter screen into the collection mechanism. And driven by the stirring mechanism, it can synchronously drive the crushing mechanism to rotate, so that when rotating, it can synchronously crush the larger particles, making them easier to collect. S2. When specifically driving the crushing mechanism, with the rotation of the driving shaft, it can ensure that the connecting frame does not rotate, thereby ensuring the stability of the support frame. Since the driving component is connected to the surface of the driving shaft, with the rotation of the driving shaft, it can drive the driving component to drive the crushing roller, so as to crush the larger particles in the sewage and prevent the problem that the particles are too large to be collected. S3. When the driving component is specifically working, first, the second gear disk is fixed to the surface of the driving shaft, so that with the rotation of the driving shaft, it can drive the second gear disk to drive the first gear disk to rotate. When the first gear disk rotates, it can synchronously rotate the diamond column. Since the diamond column is inserted into the second bevel gear, the second bevel gear rotates and drives the first bevel gear to rotate. When the first bevel gear rotates, the crushing roller rotates.

[0017] Compared with the prior art, the present invention provides an autotrophic denitrifying sewage treatment device, which has the following beneficial effects: 1. This autotrophic denitrification sewage treatment equipment, through the cooperation among the stirring mechanism, the crushing mechanism, the collection mechanism and the knocking mechanism, enables particle separation during the sewage treatment process. Through this setting, better denitrification treatment is achieved during the nitrification reaction of sewage by microorganisms, preventing the accumulation of particulate impurities and making separation impossible, and further having good operability.

[0018] 2. This autotrophic denitrification sewage treatment equipment, through the cooperation among the connecting frame, the support frame, the crushing roller and the driving component, enables the crushing of particles under the drive of the stirring mechanism. Through this setting, larger particles can be crushed, preventing larger particles from easily accumulating and blocking the filter screen, and further improving the subsequent filtering effect. 3. This autotrophic denitrification sewage treatment equipment, through the cooperation among the support rod, the sliding rod, the connecting plate, the disk cam and the return spring, enables the knocking and vibration of the bottom of the filter screen. Through this setting, the sediment blocking the pores of the filter screen is removed by knocking, avoiding the accumulation of sediment in the pores and affecting the filtering effect.

[0019] The parts not involved in this device are the same as or can be implemented using existing technologies. The present invention achieves better denitrification treatment during the nitrification reaction of sewage by microorganisms, prevents the accumulation of particulate impurities and makes separation impossible, achieves the effect of water pollution prevention, and has good operability. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of an autotrophic denitrification sewage treatment equipment proposed by the present invention; Figure 2 It is a front structural diagram of an autotrophic denitrification sewage treatment equipment proposed by the present invention; Figure 3 It is a schematic structural diagram of the crushing mechanism of an autotrophic denitrification sewage treatment equipment proposed by the present invention; Figure 4 It is a schematic structural diagram of the knocking mechanism of an autotrophic denitrification sewage treatment equipment proposed by the present invention; Figure 5 It is a schematic connection structure diagram of the stirring mechanism and the crushing mechanism of an autotrophic denitrification sewage treatment equipment proposed by the present invention; Figure 6 It is a schematic sectional view of an autotrophic denitrification sewage treatment equipment proposed by the present invention; Figure 7 It is a left structural diagram of an autotrophic denitrification sewage treatment equipment proposed by the present invention; Figure 8This is a schematic diagram of the right side structure of a sewage treatment device for autotrophic denitrification and nitrogen removal proposed by the present invention.

[0021] In the figure: 1, reaction tank; 2, liquid inlet; 3, filter screen; 4, stirring mechanism; 41, drive shaft; 42, drive assembly; 43, stirring rod; 44, aggregate cylinder; 45, discharge hole; 5, crushing mechanism; 51, connecting frame; 52, support frame; 53, crushing roller; 54, drive component; 541, bevel gear one; 542, bevel gear two; 543, rhombic column; 544, gear disk one; 545, gear disk two; 55, deflector; 6, collection mechanism; 61, collection cylinder; 62, connecting pipe; 63, discharge pipe; 64, filter cartridge; 65, connecting cover; 7, knocking mechanism; 71, support rod; 72, sliding rod; 73, connecting plate; 74, disk cam; 75, return spring; 76, knocking head. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention 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 therefore should not be construed as a limitation of the present invention.

[0024] In one embodiment, referring to Figures 1 - 8 , a sewage treatment device for autotrophic denitrification and nitrogen removal includes a reaction tank 1. The top of the reaction tank 1 is fixedly connected with a liquid inlet 2. A filter screen 3 is fixedly connected inside the reaction tank 1. It further includes: a stirring mechanism 4, which rotates through a bearing on the inner top wall of the reaction tank 1 and its end extends outside the reaction tank 1 to stir the sewage inside the reaction tank 1; a crushing mechanism 5, installed on the surface of the stirring mechanism 4 to crush larger particles in the sewage; a collection mechanism 6, arranged on one side of the reaction tank 1 to collect the crushed particles; a knocking mechanism 7, fixed at the bottom of the stirring mechanism 4 to knock and vibrate the bottom of the filter screen 3. The collection mechanism 6 includes a collection cylinder 61 arranged on one side of the reaction tank 1. One side of the reaction tank 1 is respectively communicated with a connecting pipe 62 and a discharge pipe 63. The end of the connecting pipe 62 is communicated with the collection cylinder 61, and the end of the discharge pipe 63 is communicated at the bottom of the collection cylinder 61. A filter cartridge 64 is arranged inside the collection cylinder 61, and a connecting cover 65 is connected to the inside of the collection cylinder 61 by threads.

[0025] With such a scheme, under the setting of the reaction tank 1, an environment suitable for the growth of autotrophic denitrifying microorganisms can be created, so as to facilitate the better nitrification reaction between microorganisms and sewage in the later stage.

[0026] During specific operation, when sewage needs to be denitrified, the operator first injects the sewage into the reaction tank 1 through the liquid inlet 2 in the reaction tank 1, and then it comes into contact with the microorganisms inside the reaction tank 1. Then, a nitrification reaction occurs between the sewage and the microorganisms in the reaction tank 1. Through the nitrification reaction, nitrate or nitrite in the sewage is denitrified. Then, under the setting of the filter screen 3, it can filter the particles in the sewage, making the larger ones accumulate on the surface of the filter screen 3. Then, driven by the stirring mechanism 4, it can scrape the larger particles on the surface of the filter screen 3 into the collection mechanism 6. And driven by the stirring mechanism 4, the crushing mechanism 5 can be synchronously driven to rotate. When rotating, it can synchronously crush the larger particles to make them easier to collect. During the specific operation of the collection mechanism 6, first, the end of the collection cylinder 61 is connected to the side wall of the reaction tank 1 and is aligned with the filter screen 3. When the particle impurities that cannot be filtered accumulate on the surface of the filter screen 3, the stirring mechanism 4 can displace the particle impurities, making them transported to the inside of the connecting frame 51 through the support frame 52. Then, the driving component 54 can collect the particle impurities. Since the surface of the driving component 54 is hollowed out, it can automatically filter the smaller particles and sewage, and then return to the reaction tank 1 through the crushing roller 53 again. In this way, the particles can be separated. When the connecting cover 65 rotates, the connecting cover 65 can be separated from the inside of the collection cylinder 61, and then the collected larger impurities can be taken out by taking out the filter cylinder 64. And the smaller particles inside the reaction tank 1 can be directly discharged to the outside through the sewage discharge pipe for cleaning.

[0027] Supplementary note, a sewage discharge port is provided on one side of the reaction tank 1 to facilitate the treatment of the sewage after the nitrification reaction in the later stage. And the front is connected with a sealing door through a hinge. Under the setting of the sealing door, it is convenient to maintain and repair the equipment inside the reaction tank 1 in the later stage.

[0028] In one embodiment, refer to Figure 2 and Figure 5, the stirring mechanism 4 includes a driving shaft 41 rotatably mounted on the inner top wall of the reaction tank 1 through bearings. A driving assembly 42 is fixedly connected to the reaction tank 1. The driving assembly 42 is used to drive the end of the driving shaft 41. A stirring rod 43 is fixedly connected to the surface of the driving shaft 41. The stirring rod 43 is attached directly above the filter screen 3. The stirring mechanism 4 further includes a collecting cylinder 44 fixed to the top of the reaction tank 1. The discharge port of the collecting cylinder 44 penetrates to the top of the driving shaft 41. A plurality of discharge holes 45 are formed in the surface of the driving shaft 41. The discharge holes 45 are located directly above the stirring rod 43.

[0029] With such a solution, driven by the stirring mechanism 4, it can clean the impurities that cannot be filtered on the surface of the filter screen 3, avoiding the accumulation of particulate impurities on the surface of the filter screen 3 and unable to be processed in time, which affects the working time of microorganisms in the later nitrification reaction of sewage.

[0030] During specific operation, driven by the driving assembly 42 on the surface of the driving shaft 41, the driving shaft 41 can be rotated. When the driving shaft 41 rotates, the stirring rod 43 can be driven to rotate synchronously. When the stirring rod 43 rotates, the particulate impurities that cannot be filtered on the surface of the filter screen 3 can be displaced, and the particulate impurities can be collected by the collecting mechanism 6, avoiding the accumulation of particulate impurities on the filter screen 3 and affecting the subsequent filtering effect. With the setting of the collecting cylinder 44, it can quantitatively add the reaction solution, and then evenly spray it into the sewage through the discharge holes 45, so that they are evenly mixed, thereby accelerating the nitrification reaction of the sewage.

[0031] Supplementary note, the driving assembly 42 includes a servo motor and two bevel gears. The servo motor fixes the bevel gear, and the other bevel gear is fixed on the surface of the driving shaft 41. Then the two bevel gears are meshed with each other, so that when one set of bevel gears rotates, the other bevel gear can be driven to rotate synchronously.

[0032] In one embodiment, refer to Figure 2 , Figure 3 and Figure 5, the crushing mechanism 5 includes a connecting frame 51 rotatably connected to the surface of the drive shaft 41 through a bearing. One side of the connecting frame 51 is fixedly connected with a support frame 52. The inside of the support frame 52 is rotatably connected with a crushing roller 53 through a bearing. A driving component 54 is arranged inside the connecting frame 51 for driving the crushing roller 53. The driving component 54 includes a first bevel gear 541 fixed to the end of the crushing roller 53. The surface of the first bevel gear 541 is meshed with a second bevel gear 542. The second bevel gear 542 is rotatably connected inside the connecting frame 51 through a bearing. A diamond column 543 penetrates through the inside of the second bevel gear 542. The end of the diamond column 543 is fixedly connected with a first gear disk 544. The surface of the first gear disk 544 is meshed with a second gear disk 545. The second gear disk 545 is fixed to the surface of the drive shaft 41. Two flow guiding plates 55 are fixedly connected in front of the driving component 54. The two flow guiding plates 55 are located in front of the crushing roller 53.

[0033] With such a scheme, under the setting of the crushing mechanism 5, when the drive shaft 41 is driven, the crushing mechanism 5 can work synchronously, so as to crush larger particle impurities during stirring, and then better collect the larger impurities through the collecting mechanism 6, avoiding the accumulation of impurities on the surface of the filter screen 3 and affecting the subsequent filtering effect, and further improving the efficiency of water pollution denitrification treatment.

[0034] During specific work, first, the connecting frame 51 is installed on the surface of the drive shaft 41 through a bearing, and then the connecting frame 51 is used to fix the support frame 52. At this time, the driving component 54 is connected to the drive shaft 41, so that the crushing roller 53 can be driven to rotate synchronously under the rotation of the drive shaft 41. With two groups of crushing rollers 53, they can rotate, so as to crush larger particles that cannot be filtered by the filter screen 3 inside the reaction tank 1, and then enter the collecting mechanism 6 for centralized collection. Under the setting of the flow guiding plates 55, larger particles during rotation can be better guided to the space between the crushing rollers 53 for crushing treatment; Under the drive of the driving component 54, since the second gear disk 545 is fixed to the surface of the drive shaft 41, the second gear disk 545 rotates synchronously with the drive shaft 41. Under the rotation of the second gear disk 545, the first gear disk 544 meshed on its surface can be driven to rotate synchronously. Under the rotation of the first gear disk 544, the diamond column 543 drives the meshed second bevel gear 542 to rotate, and then drives the first bevel gear 541 to rotate through the second bevel gear 542, so as to drive the crushing roller 53. Since the second bevel gear 542 is symmetrically arranged, the crushing rollers 53 can be rotated in opposite directions synchronously to better crush larger particles.

[0035] Supplementary note: The rotation direction of the drive shaft 41 is counterclockwise, so that the particles can be better moved into the crushing roller 53 for crushing treatment.

[0036] In one embodiment, referring to Figure 2 and Figure 4 , the knocking mechanism 7 includes a support rod 71 fixed to the inner wall of the reaction tank 1. A sliding rod 72 is slidably connected inside the support rod 71. One end of the sliding rod 72 is fixedly connected to a connecting plate 73. A disk cam 74 is attached to the surface of the connecting plate 73. One end of the disk cam 74 is fixedly connected to the bottom of the drive shaft 41. A return spring 75 is sleeved on the surface of the sliding rod 72. Two ends of the return spring 75 are respectively fixedly connected to the support rod 71 and the disk cam 74. The top of the sliding rod 72 is fixedly connected to a knocking head 76, and the top of the knocking head 76 is made of metal.

[0037] With such a scheme, under the setting of the knocking mechanism 7, when the drive shaft 41 drives, the end of the sliding rod 72 can be knocked to the bottom of the filter screen 3, so that the filter screen 3 vibrates, and the sediment blocked inside the pore diameter of the filter screen 3 is removed by knocking vibration to avoid sediment accumulation in the pore diameter and affect the filtering effect.

[0038] During specific operation, since the disk cam 74 is fixed to the bottom of the drive shaft 41, when the drive shaft 41 rotates, the disk cam 74 can be rotated synchronously, and the connecting plate 73 attached to the surface can be moved. When the connecting plate 73 is at the highest position of the disk cam 74, the sliding rod 72 inside the support rod 71 is pulled to move downward. As the disk cam 74 rotates again, under the rebounding force of the return spring 75, the connecting plate 73 can be quickly driven to drive the sliding rod 72 to reset, so that the knocking head 76 fixed to the end of the sliding rod 72 can be knocked to the bottom of the filter screen 3, causing the bottom of the filter screen 3 to vibrate. With the knocking head 76 made of metal, the knocking vibration force is greater.

[0039] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. An autotrophic denitrification wastewater treatment device, comprising a reaction box (1), the top of the reaction box (1) is fixedly connected to a liquid inlet (2), the interior of the reaction box (1) is fixedly connected to a filter screen (3), characterized in that: Also includes: A stirring mechanism (4) is rotated on the inner top wall of the reaction box (1) through a bearing and has an end portion extending through the reaction box (1) to stir the sewage inside the reaction box (1); A crushing mechanism (5) is installed on the surface of the stirring mechanism (4) and is used to crush larger particles in the sewage; A collecting mechanism (6) is arranged on one side of the reaction box (1) and is used to collect the crushed particles; The knocking mechanism (7) is fixed to the bottom of the stirring mechanism (4) and is used to knock and vibrate the bottom of the filter screen (3).

2. The autotrophic denitrification and denitrification sewage treatment equipment according to claim 1, characterized in that: The stirring mechanism (4) comprises a driving shaft (41) which rotates on the top wall of the reaction box (1) via a bearing, the reaction box (1) is fixedly connected to a driving assembly (42), the driving assembly (42) is used to drive the end of the driving shaft (41), and a stirring rod (43) is fixedly connected to the surface of the driving shaft (41), and the stirring rod (43) is attached to the top of the filter screen (3).

3. The autotrophic denitrification and denitrification sewage treatment equipment according to claim 2 is characterized in that: The pulverizing mechanism (5) comprises a connecting frame (51) rotatably connected to the surface of a driving shaft (41) via a bearing, a supporting frame (52) being fixedly connected to one side of the connecting frame (51), a pulverizing roller (53) being rotatably connected to the inside of the supporting frame (52) via a bearing, and a driving component (54) being arranged inside the connecting frame (51), and the driving component (54) being used to drive the pulverizing roller (53).

4. The autotrophic denitrification and denitrification sewage treatment equipment according to claim 1, characterized in that: The knocking mechanism (7) comprises a support rod (71) fixed to the inner wall of the reaction box (1); a sliding rod (72) is slidably connected inside the support rod (71); an end of the sliding rod (72) is fixedly connected to a connecting plate (73); a surface of the connecting plate (73) is fitted with a disc cam (74); an end of the disc cam (74) is fixedly connected to the bottom of the driving shaft (41); a return spring (75) is sleeved on the surface of the sliding rod (72); and two ends of the return spring (75) are respectively fixedly connected to the support rod (71) and the disc cam (74).

5. The autotrophic denitrification and denitrification sewage treatment equipment according to claim 1, characterized in that: The collecting mechanism (6) comprises a collecting cylinder (61) arranged at one side of the reaction box (1); a connecting pipe (62) and a discharge pipe (63) are respectively connected to one side of the reaction box (1); an end of the connecting pipe (62) is connected to the collecting cylinder (61); an end of the discharge pipe (63) is connected to the bottom of the collecting cylinder (61); a filter cylinder (64) is arranged inside the collecting cylinder (61); and a connecting cover (65) is connected to the inside of the collecting cylinder (61) via a thread.

6. The autotrophic denitrification and denitrification sewage treatment equipment according to claim 1, characterized in that: The stirring mechanism (4) further comprises a collecting barrel (44) fixed on the top of the reaction box (1), a discharge port of the collecting barrel (44) extending through the top of the driving shaft (41), a plurality of discharge holes (45) being provided on the surface of the driving shaft (41), and the discharge holes (45) being located directly above the stirring rod (43).

7. The autotrophic denitrification and denitrification sewage treatment equipment according to claim 3 is characterized in that: The driving component (54) comprises a bevel gear 1 (541) fixed to the end of the crushing roller (53); the surface of the bevel gear 1 (541) is meshingly connected with a bevel gear 2 (542); the bevel gear 2 (542) rotates inside the connecting frame (51) via a bearing; a rhombus column (543) is connected through the inside of the bevel gear 2 (542); the end of the rhombus column (543) is fixedly connected with a gear plate 1 (544); the surface of the gear plate 1 (544) is meshingly connected with a gear plate 2 (545); the gear plate 2 (545) is fixed to the surface of the driving shaft (41).

8. The autotrophic denitrification and denitrification sewage treatment equipment according to claim 4, characterized in that: A knocking head (76) is fixedly connected to the top of the sliding rod (72), and the top of the knocking head (76) is made of metal.

9. The autotrophic denitrification and denitrification sewage treatment equipment according to claim 3, characterized in that: Two guide plates (55) are fixedly connected directly in front of the driving component (54), and the two guide plates (55) are located directly in front of the crushing roller (53).

10. A method for using an autotrophic denitrification and denitrification wastewater treatment device, comprising the autotrophic denitrification and denitrification wastewater treatment device according to claim 7, characterized in that: The main steps include: S1. When it is necessary to denitrify the sewage, the operator first injects the sewage into the reaction box (1) through the liquid inlet (2) in the reaction box (1), and then the sewage contacts the microorganisms in the reaction box (1), thereby causing the sewage in the reaction box (1) and the microorganisms to undergo a nitrification reaction, and denitrifying the nitrate or nitrite in the sewage through the nitrification reaction. Then, under the setting of the filter screen (3), the particles in the sewage can be filtered, and the larger particles can be accumulated on the surface of the filter screen (3). Then, through the driving of the stirring mechanism (4), the larger particles on the surface of the filter screen (3) can be scraped off to the inside of the collecting mechanism (6). Under the driving of the stirring mechanism (4), the crushing mechanism (5) can be driven to rotate synchronously, so that the larger particles can be crushed synchronously during the rotation, making it easier to collect. S2. When the pulverizing mechanism (5) is driven, the connection frame (51) can be ensured not to rotate by the rotation of the driving shaft (41), thereby ensuring the stability of the support frame (52). Since the driving component (54) is connected to the surface of the driving shaft (41), the driving component (54) can drive the pulverizing roller (53) when the driving shaft (41) rotates, thereby pulverizing larger particles in the sewage, thereby preventing the problem that larger particles cannot be collected; S3. When the driving component (54) is working, the second gear plate (545) is first fixed to the surface of the driving shaft (41), so that when the driving shaft (41) rotates, the second gear plate (545) can drive the first gear plate (544) to rotate. When the first gear plate (544) rotates, the diamond column (543) can be rotated synchronously. Since the diamond column (543) is inserted into the second bevel gear (542), the second bevel gear (542) rotates and drives the first bevel gear (541) to rotate. When the first bevel gear (541) rotates, the crushing roller (53) can be rotated.

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