Internal circulation denitrification biological denitrification wastewater treatment device and use method thereof

Abstract

The present invention relates to the technical field of wastewater treatment, and discloses an internal circulation denitrification biological denitrification wastewater treatment device and a method of using the same, comprising a main body and a filter material, wherein the left side of the main body is fixedly connected with a water inlet, the right side of the main body is fixedly connected with a nitrification tank, the top of the main body is fixedly connected with a top plate, the right side of the top plate is fixedly connected to the side wall of the nitrification tank, and the top of the top plate is fixedly connected with a circulation pump. The present invention can effectively and frequently backwash the filter material as the shaking drum rotates. Since the liquid is sprayed from different positions driven by the eccentric rotation of the shaking drum, the filter material can be frequently and comprehensively washed, reducing the excessive accumulation of impurities on the surface of the filter material caused by the gaps of the gas backwashing, thereby further improving the cleaning degree of the filter material, and further contributing to enhancing the efficiency of denitrification.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, and in particular to an internal circulation denitrification biological denitrification wastewater treatment device and a use method thereof. Background Art

[0002] Sulfur autotrophic denitrification is a new type of denitrification technology. It uses sulfur compounds as electron acceptors to reduce nitrogen in nitrates to nitrogen gas, thereby achieving the purpose of denitrification. This technology can not only effectively remove nitrogen from sewage, but also reduce the use of chemical agents and reduce treatment costs. It is widely used in sewage treatment, agricultural production and other fields. When treating wastewater through denitrification, the rotation of the stirring paddle is generally used to promote the flow and mixing of wastewater and nitrification liquid. Due to the circulating flow of nitrification liquid and wastewater, when they are mixed by stirring, the mixing rate is likely to be better in the area close to the paddle, while in the area far away from the paddle, especially in the corners of the reaction tank or at the bottom, mixing dead corners are likely to occur during mixing, which is likely to affect the nitrification reaction rate of the wastewater during mixing treatment and affect the treatment effect of the wastewater. Summary of the invention

[0003] The purpose of the present invention is to provide an internal circulation denitrification biological denitrification wastewater treatment device to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention is implemented through the following technical solutions: the present invention is an internal circulation denitrification biological denitrification wastewater treatment device, including a main body and a filter material, the left side of the main body is fixedly connected with a water inlet, the right side of the main body is fixedly connected with a nitrification tank, the top of the main body is fixedly connected with a top plate, the right side of the top plate is fixedly connected with the side wall of the nitrification tank, the top of the top plate is fixedly connected with a circulation pump, and also includes; a transmission mechanism, the transmission mechanism includes a motor fixedly connected to the top of the top plate, the output end of the motor passes through the bottom of the top plate and extends to the inside of the main body, the extension end of the motor is fixedly connected with a stirring shaft, located The outer surface of the stirring shaft inside the main body is fixedly connected with a plurality of L-plates, the outer surface of the stirring shaft is rotatably connected with a fixed cylinder, the outer surface of the fixed cylinder is fixedly connected with two support plates, and the end of the support plate away from the fixed cylinder is fixedly connected to the inner wall of the main body; a rotating mechanism, the rotating mechanism includes a limit plate rotatably connected to the bottom of the driven tooth, a plurality of limit plates are fixedly connected with a fixed disk on the side close to the stirring shaft, a shaking cylinder is arranged on the top of the fixed disk, a plurality of intermediate plates are fixedly connected with the outer surface of the shaking cylinder, the end of the intermediate plate away from the shaking cylinder is rotatably connected to the side wall of the second L-plate, and the outer surface of the shaking cylinder is fixedly connected with a limit rod.

[0005] Furthermore, a circulation pipe is fixedly connected to the output end of the circulation pump, a water outlet is fixedly connected to the side of the nitrification tank away from the water inlet, a plurality of aeration pipes are fixedly connected to the interior of the main body, a plurality of aeration pipes pass through the outer wall of the main body on one side close to the water inlet and extend to the outside, and a connecting pipe is fixedly connected to the extended ends of the plurality of aeration pipes.

[0006] Furthermore, a gear disc is rotatably connected to the outer surface of the fixed cylinder, the top of the gear disc is fixedly connected to a plurality of L-plates, an annular wave groove is provided on the side of the gear disc away from the motor, a plurality of bidirectional gear rods are meshingly connected to the outer surface of the gear disc, the middle part of the bidirectional gear rod is rotatably connected to the inner wall of the main body, one end of the bidirectional gear rod away from the gear disc is meshingly connected to a driven tooth, and the top of the driven tooth is fixedly connected to L-plate 2.

[0007] Furthermore, a C-shaped plate is fixedly connected to the top of the shaking cylinder, a long rod is fixedly connected to the side of the C-shaped plate close to the shaking cylinder, a spring frame is fixedly connected to the top of the limiting rod, a piston disk is fixedly connected to the side of the spring frame close to the shaking cylinder, the inner wall of the piston disk is slidably connected to the inside of the shaking cylinder, the bottom of the piston disk penetrates to the bottom of the shaking cylinder and extends to the outside, and a plurality of water outlet holes are opened at the bottom of the shaking cylinder.

[0008] Furthermore, a moving mechanism is provided at the top of the shaking cylinder, and the moving mechanism includes a spherical rod rotatably connected to the top of the C-shaped plate, and the end of the spherical rod away from the C-shaped plate is rotatably connected to a chassis, the chassis and the spherical rod are eccentrically arranged, and a plurality of spring rods are fixedly connected to the top of the chassis, and the tops of the plurality of spring rods are fixedly connected to a top plate.

[0009] Furthermore, a plurality of circular holes are provided at the bottom of the chassis, the tops of the plurality of circular holes penetrate through the top outer wall of the top chassis, a spring rod 2 is fixedly connected to the bottom of the top chassis, the bottom of the spring rod 2 penetrates through the bottom of the chassis and extends to the outside, a protruding disk is fixedly connected to the output end of the spring rod 2, a plurality of return springs are fixedly connected to the top of the protruding disk, and the tops of the plurality of return springs are fixedly connected to the bottom outer wall of the chassis; wherein, the top chassis is slidably connected to the outer surface of the fixed cylinder.

[0010] Furthermore, an auxiliary mechanism is provided on the top of the top plate, which includes a plurality of connecting rods rotatably connected to the top of the top plate, one end of the connecting rod away from the top plate is rotatably connected to a sliding frame, and the top of the sliding frame is slidably connected to the inside of the annular wave groove.

[0011] Furthermore, a cleaning mechanism is provided at the bottom of the limiting plate, and the cleaning mechanism includes a connecting plate fixedly connected to the extending end of the piston plate, the outer surface of the connecting plate is rotatably connected to a plurality of rotating rods, the bottom of the rotating rods is fixedly connected to a scraper, the outer surfaces of the plurality of rotating rods are slidably connected to a limiting ring, a side of the limiting ring close to the limiting plate is fixedly connected to a plurality of vortex springs, one end of the plurality of vortex springs away from the limiting ring is fixedly connected to the bottom outer wall of the fixed plate, and the bottom of the limiting ring is in contact with the top of the filter material.

[0012] Furthermore, a method for using an internal circulation denitrification biological denitrification wastewater treatment device, an internal circulation denitrification biological denitrification wastewater treatment device, the method comprises the following steps: S1: pipeline connection, laying filter material: firstly, the water inlet is connected to the wastewater source, then the water outlet is connected to the sedimentation tank and multiple water inlets are connected to the external air pump through the connecting pipe, and the filter material is laid inside the main body; S2: wastewater transportation: then the wastewater is transported to the inside of the main body through the water inlet, and when the wastewater enters the inside of the main body It will spread to the inside of the nitrification tank, and then the two ends of the circulation pipe will be connected to the nitrification tank and the main body respectively, and then the circulation pump will be started to transport the nitrification liquid produced in the nitrification tank to the inside of the main body and mix with it; S3: stirring treatment: then the motor is started to mix and stir the wastewater through the stirring shaft, and then the denitrifying bacteria attached to the filter material use the organic carbon source in the wastewater as an electron donor to reduce the nitrate nitrogen to nitrogen gas and release it into the air. At the same time, the filter layer intercepts suspended matter and impurities in the wastewater to achieve the purpose of purifying water quality.

[0013] The present invention has the following beneficial effects: 1. In the present invention, when the motor is started, the motor will drive the stirring shaft to rotate, and when the stirring shaft rotates, it will drive the toothed disc to rotate through multiple L plates, and when the toothed disc rotates, it will drive multiple driven teeth to rotate through multiple bidirectional gear rods, and when the multiple driven teeth rotate, they will drive the shaking cylinder to rotate eccentrically on the top of the fixed disk through L plate 2, and when the shaking cylinder rotates, it will drive the spring frame and the piston disk to rotate at the bottom of the raised disk through the limit rod, and when the spring frame rotates and separates from the protrusion at the bottom of the raised disk, the spring frame will drive the piston disk to rise on the surface of the long rod under the elastic force of the internal spring, and at this time, the waste water inside the main body will enter the inside of the shaking cylinder, and then when When the spring frame rotates to contact the protrusion at the bottom of the raised disk, the spring frame will drive the piston disk to slide downward under the pressure of the protrusion at the bottom of the raised disk. When the piston disk slides downward, it will pass through the fixed disk through several water outlets at the bottom of the shaking cylinder to spray the surface of the filter material as the shaking cylinder rotates, and generate a strong liquid impact force in the wastewater. When the shaking cylinder rotates, the filter material is effectively and frequently backwashed. Since the liquid is sprayed from different positions driven by the eccentric rotation of the shaking cylinder, the filter material can be flushed more comprehensively and frequently, reducing the accumulation of excessive impurities on the surface of the filter material in the gaps caused by gas backwashing, thereby further improving the cleanliness of the filter material, and further helping to enhance the efficiency of denitrification. 2. In the present invention, when the shaking cylinder is rotating, the rotation of the shaking cylinder will drive the spherical rod to rotate through the C-shaped plate. When the spherical rod rotates with the C-shaped plate, it will push the bottom plate up and down. At the same time, when the toothed disc rotates, the rotation of the toothed disc will drive multiple sliding frames to slide back and forth through the guidance of the bottom annular wave groove. When the multiple sliding frames slide, they will drive the top plate to slide synchronously through multiple connecting rods. When the top plate slides downward, the bottom plate will slide upward. At this time, the top plate and the bottom plate will slide relative to each other. When the top plate and the bottom plate slide relative to each other The wastewater inside the main body will be squeezed. When the wastewater is squeezed by the relative movement of the top plate and the bottom plate, part of the wastewater will diffuse outward between the top plate and the bottom plate, while another part of the wastewater will gush outward through multiple circular holes on the top plate and the bottom plate. This gush action can produce strong convection, causing the wastewater and nitrification liquid to be violently stirred in the local area, fully breaking up the wastewater and nitrification liquid, so that different levels inside the entire main body can be effectively mixed, thereby accelerating the mixing speed and increasing the rate of denitrification reaction, thereby improving the effect of the entire sewage treatment.3. In the present invention, when the piston disc slides downward inside the shaking cylinder, the downward movement of the piston disc will drive multiple rotating rods to slide downward on the surface of the limiting ring through the connecting disc. When the multiple rotating rods slide downward, they will pass through the limiting ring and make the bottom plate contact with the surface of the filter material. Then, when the piston disc rotates with the shaking cylinder, the multiple rotating rods can be driven to rotate on the surface of the limiting ring through the connecting disc. When the multiple rotating rods rotate with the connecting disc, the scraper at the bottom will scrape the top of the filter material. When the rotating rods and the scraper are scraping, they can smooth the filter material, reduce the impact of the water flow sprayed through the shaking cylinder on the filter material, and reduce the uneven distribution of the filter material caused by the loosening or loss of the filter material under the impact. The impurity retention capacity of the filter material will be reduced, and the uniformity of the filter material and the treatment effect of the wastewater will be affected. At the same time, the loosening or loss of the filter material will affect the attachment and growth of microorganisms, thereby improving the denitrification efficiency.

[0014] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall partial cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the main body of the present invention; Figure 4 It is a schematic diagram of the transmission mechanism of the present invention; Figure 5 It is a partial schematic diagram of the transmission and structure of the present invention; Figure 6 It is a schematic diagram of the rotating mechanism of the present invention; Figure 7 It is a schematic diagram of the cleaning mechanism of the present invention; Figure 8 It is a schematic diagram of the mobile mechanism of the present invention; Fig. 9 The figure is a flow chart of the method for using the present invention.

[0017] In the attached drawings, the components represented by the reference numerals are as follows: In the drawings: 1. Main body; 101. Water inlet; 102. Top plate; 103. Circulation pump; 104. Water outlet; 105. Filter material; 106. Aeration pipe; 107. Nitrification tank; 2. Transmission mechanism; 201. Motor; 202. Stirring shaft; 203. L plate; 204. Toothed disc; 205. Fixed cylinder; 206. Bidirectional toothed rod; 207. Driven tooth; 208. L plate II; 3. Rotation mechanism; 301. Limiting plate; 302. Stirring shaft; 203. L plate; 204. Toothed disc; 205. Fixed cylinder; 206. Bidirectional toothed rod; 207. Driven tooth; 208. L plate II; 3. Rotation mechanism; 301. Limiting plate; 302. 02. Fixed plate; 303. Shaking cylinder; 304. Limit rod; 305. C-type plate; 306. Spring frame; 307. Piston plate; 4. Moving mechanism; 401. Spherical rod; 402. Chassis; 403. Spring rod one; 404. Top plate; 405. Spring rod two; 406. Raised plate; 5. Auxiliary mechanism; 501. Connecting rod; 502. Sliding frame; 6. Cleaning mechanism; 601. Connecting plate; 602. Rotating rod; 603. Limit ring; 604. Vortex spring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1 - Figure 8As shown, the present invention is an internal circulation denitrification biological denitrification wastewater treatment device, including a main body 1 and a filter material 105, the left side of the main body 1 is fixedly connected with a water inlet 101, the right side of the main body 1 is fixedly connected with a nitrification tank 107, the top of the main body 1 is fixedly connected with a top plate 102, the right side of the top plate 102 is fixedly connected to the side wall of the nitrification tank 107, the top of the top plate 102 is fixedly connected with a circulation pump 103, and also includes; a transmission mechanism 2, the transmission mechanism 2 includes a motor 201 fixedly connected to the top of the top plate 102, the output end of the motor 201 passes through the bottom of the top plate 102 and extends to the inside of the main body 1, the extended end of the motor 201 is fixedly connected with a stirring shaft 202, the outer surface of the stirring shaft 202 located inside the main body 1 is fixedly connected with a plurality of L plates 203, the outer surface of the stirring shaft 202 is rotatably connected with a fixed cylinder 205, and the outer surface of the fixed cylinder 205 is fixedly connected with Two support plates, one end of the support plate away from the fixed cylinder 205 is fixedly connected to the inner wall of the main body 1; a rotating mechanism 3, the rotating mechanism 3 includes a limit plate 301 rotatably connected to the bottom of the driven tooth 207, a plurality of limit plates 301 are fixedly connected to a fixed disk 302 on one side close to the stirring shaft 202, a shaking cylinder 303 is arranged on the top of the fixed disk 302, a plurality of intermediate plates are fixedly connected to the outer surface of the shaking cylinder 303, an end of the intermediate plate away from the shaking cylinder 303 is rotatably connected to the side wall of the L plate 208, a limit rod 304 is fixedly connected to the outer surface of the shaking cylinder 303, when the motor 201 is started, the operation of the motor 201 will drive the stirring shaft 202 to rotate, when the stirring shaft 202 rotates, it will drive the toothed disk 204 to rotate through a plurality of L plates 203, when the toothed disk 204 rotates, it will drive a plurality of driven teeth 207 to rotate through a plurality of bidirectional gear rods 206.

[0020] The output end of the circulation pump 103 is fixedly connected to a circulation pipe, the side of the nitrification tank 107 away from the water inlet 101 is fixedly connected to a water outlet 104, and the interior of the main body 1 is fixedly connected to a plurality of aeration pipes 106, and the side of the plurality of aeration pipes 106 close to the water inlet 101 penetrates through the outer wall of the main body 1 and extends to the outside, and the extended ends of the plurality of aeration pipes 106 are fixedly connected to connecting pipes, and the water inlet 101 is first connected to the wastewater source, and then the water outlet 104 is connected to the sedimentation tank, and the plurality of water inlets 101 are connected to an external air pump through a connecting pipe, and at the same time, the filter material 105 is laid inside the main body 1, and then the wastewater is transported to the interior of the main body 1 through the water inlet 101, and when the wastewater enters the interior of the main body 1, it will spread to the interior of the nitrification tank 107.

[0021] The outer surface of the fixed cylinder 205 is rotatably connected with a toothed disc 204, and the top of the toothed disc 204 is fixedly connected to a plurality of L-plates 203. An annular wave groove is provided on the side of the toothed disc 204 away from the motor 201. The outer surface of the toothed disc 204 is meshingly connected with a plurality of bidirectional gear rods 206. The middle part of the bidirectional gear rod 206 is rotatably connected to the inner wall of the main body 1. The end of the bidirectional gear rod 206 away from the toothed disc 204 is meshingly connected with a driven tooth 207. The top of the driven tooth 207 is fixedly connected with an L-plate 208. When the plurality of driven teeth 207 rotate, the L-plate 208 will drive the shaking cylinder 303 to rotate eccentrically at the top of the fixed disk 302. When the shaking cylinder 303 rotates, the limit rod 304 will drive the spring frame 306 and the piston disk 307 to rotate at the bottom of the raised disk 406.

[0022] A C-shaped plate 305 is fixedly connected to the top of the shaking cylinder 303, and a long rod is fixedly connected to the side of the C-shaped plate 305 close to the shaking cylinder 303. A spring frame 306 is fixedly connected to the top of the limiting rod 304, and a piston disk 307 is fixedly connected to the side of the spring frame 306 close to the shaking cylinder 303. The inner wall of the piston disk 307 is slidably connected to the inside of the shaking cylinder 303, and the bottom of the piston disk 307 penetrates to the bottom of the shaking cylinder 303 and extends to the outside. A number of water outlet holes are provided at the bottom of the shaking cylinder 303. When the spring frame 306 rotates and separates from the protrusion at the bottom of the protrusion disk 406, the spring frame 306 will drive the piston disk 307 to rise on the surface of the long rod under the elastic force of the internal spring.

[0023] A moving mechanism 4 is provided at the top of the shaking cylinder 303, and the moving mechanism 4 includes a spherical rod 401 rotatably connected to the top of the C-type plate 305, and the end of the spherical rod 401 away from the C-type plate 305 is rotatably connected to the chassis 402, and the chassis 402 is eccentrically arranged with the spherical rod 401, and a plurality of spring rods 403 are fixedly connected to the top of the chassis 402, and a top plate 404 is fixedly connected to the top of the plurality of spring rods 403. When the spherical rod 401 rotates with the C-type plate 305, the chassis 402 will be pushed up and down. At the same time, when the toothed disc 204 rotates, the rotation of the toothed disc 204 will drive the multiple sliding frames 502 to slide back and forth through the guidance of the bottom annular wave groove, and when the multiple sliding frames 502 slide, the top plate 404 will be driven to slide synchronously through the multiple connecting rods 501.

[0024] The bottom of the bottom plate 402 is provided with a plurality of circular holes, the tops of the plurality of circular holes penetrate to the top outer wall of the top plate 404, the bottom of the top plate 404 is fixedly connected with a spring rod 405, the bottom of the spring rod 405 penetrates to the bottom of the bottom plate 402 and extends to the outside, the output end of the spring rod 405 is fixedly connected with a raised disk 406, the top of the raised disk 406 is fixedly connected with a plurality of return springs, the tops of the plurality of return springs are fixedly connected to the bottom outer wall of the bottom plate 402, and the tops of the plurality of return springs are fixedly connected to the bottom outer wall of the bottom plate 402. Wherein, the top plate 404 is slidably connected to the outer surface of the fixed cylinder 205. When the top plate 404 slides downward, the bottom plate 402 will slide upward. At this time, the top plate 404 and the bottom plate 402 will slide relative to each other. When the top plate 404 and the bottom plate 402 slide relative to each other, the waste water inside the main body 1 will be squeezed. When the waste water is squeezed by the relative movement of the top plate 404 and the bottom plate 402, a part of the waste water will diffuse outward between the top plate 404 and the bottom plate 402.

[0025] An auxiliary mechanism 5 is provided on the top of the top plate 404, and the auxiliary mechanism 5 includes a plurality of connecting rods 501 rotatably connected to the top of the top plate 404. One end of the connecting rod 501 away from the top plate 404 is rotatably connected to a sliding frame 502. The top of the sliding frame 502 is slidably connected to the inside of the annular wave groove. When the multiple sliding frames 502 slide, the top plate 404 will be driven to slide synchronously through the multiple connecting rods 501.

[0026] A cleaning mechanism 6 is provided at the bottom of the limit plate 301, and the cleaning mechanism 6 includes a connecting plate 601 fixedly connected to the extended end of the piston plate 307, the outer surface of the connecting plate 601 is rotatably connected to a plurality of rotating rods 602, the bottom of the rotating rod 602 is fixedly connected to a scraper, the outer surfaces of the plurality of rotating rods 602 are slidably connected to a limit ring 603, the side of the limit ring 603 close to the limit plate 301 is fixedly connected to a plurality of vortex springs 604, and the ends of the plurality of vortex springs 604 away from the limit ring 603 are connected to the fixed The bottom outer wall of the fixed plate 302 is fixedly connected, and the bottom of the limiting ring 603 contacts the top of the filter material 105. When the piston plate 307 slides downward inside the shaking cylinder 303, the downward movement of the piston plate 307 will drive multiple rotating rods 602 to slide downward on the surface of the limiting ring 603 through the connecting plate 601. When the multiple rotating rods 602 slide downward, they will pass through the limiting ring 603 and make the bottom plate contact the surface of the filter material 105, and then the piston plate 307 rotates with the shaking cylinder 303.

[0027] A method for using an internal circulation denitrification biological denitrification wastewater treatment device, an internal circulation denitrification biological denitrification wastewater treatment device, the method comprising the following steps: S1: pipeline connection, laying filter material 105: firstly, the water inlet 101 is connected to the wastewater source, then the water outlet 104 is connected to the sedimentation tank, and multiple water inlets 101 are connected to the external air pump through a connecting pipe, and the filter material 105 is laid inside the main body 1; S2: wastewater transportation: then the wastewater is transported to the inside of the main body 1 through the water inlet 101, and when the wastewater enters the inside of the main body 1, it will spread to The inside of the nitrification tank 107, and then the two ends of the circulation pipe are connected to the nitrification tank 107 and the main body 1 respectively, and then the circulation pump 103 is started to transport the nitrification liquid produced in the nitrification tank 107 to the inside of the main body 1 and mix it; S3: stirring treatment: Then the motor 201 is started to mix and stir the wastewater through the stirring shaft 202, and then the denitrifying bacteria attached to the filter material 105 use the organic carbon source in the wastewater as an electron donor to reduce the nitrate nitrogen to nitrogen gas and release it into the air. At the same time, the filter layer intercepts suspended matter and impurities in the wastewater to achieve the purpose of purifying water quality.

[0028] When in use, first connect the water inlet 101 to the wastewater source, then connect the water outlet 104 to the sedimentation tank and connect multiple water inlets 101 to the external air pump through the connecting pipe, and at the same time lay the filter material 105 inside the main body 1, and then transport the wastewater to the inside of the main body 1 through the water inlet 101. When the wastewater enters the inside of the main body 1, it will spread to the inside of the nitrification tank 107, and then connect the two ends of the circulation pipe with the nitrification tank 107 and the main body 1 respectively, and then start the circulation pump 103 to transport the nitrification liquid produced in the nitrification tank 107 to the inside of the main body 1 and mix it, and then start the motor 201 to mix and stir the wastewater through the stirring shaft 202, and then use the denitrifying bacteria attached to the filter material 105, with the organic carbon source in the wastewater as an electron donor, to reduce nitrate nitrogen to nitrogen gas and release it into the air, and at the same time the filter layer intercepts suspended matter and impurities in the wastewater to achieve the purpose of purifying water quality.

[0029] When the motor 201 is started, the operation of the motor 201 will drive the stirring shaft 202 to rotate. When the stirring shaft 202 rotates, it will drive the toothed disc 204 to rotate through multiple L plates 203. When the toothed disc 204 rotates, it will drive multiple driven teeth 207 to rotate through multiple bidirectional gear rods 206. When the multiple driven teeth 207 rotate, they will drive the shaking cylinder 303 to rotate eccentrically on the top of the fixed disk 302 through the L plate 208. When the shaking cylinder 303 rotates, it will drive the spring frame 306 and the piston disk 307 to rotate at the bottom of the raised disk 406 through the limit rod 304. When the spring frame 306 rotates and separates from the protrusion at the bottom of the raised disk 406, the spring frame 306 will drive the piston disk 307 to rise on the surface of the long rod under the elastic force of the internal spring. At this time, the waste water inside the main body 1 will enter the interior of the shaking cylinder 303. Later, when the spring frame 306 rotates to contact the protrusion at the bottom of the raised disk 406, the spring frame 306 will drive the piston disk 307 to slide downward under the pressure of the protrusion at the bottom of the raised disk 406. When the piston disk 307 slides downward, it will pass through the fixed disk 302 through several water outlets at the bottom of the shaking cylinder 303 to spray the surface of the filter material 105 as the shaking cylinder 303 rotates and generate a strong liquid impact force in the wastewater. When the shaking cylinder 303 rotates, the filter material 105 is effectively and frequently backwashed. Since the liquid is sprayed from different positions driven by the eccentric rotation of the shaking cylinder 303, the filter material 105 can be washed more comprehensively and frequently, reducing the accumulation of excessive impurities on the surface of the filter material 105 in the gaps caused by gas backwashing, thereby further improving the cleaning degree of the filter material 105, which can help to enhance the efficiency of denitrification.

[0030] When the shaking cylinder 303 is rotating, the rotation of the shaking cylinder 303 will drive the spherical rod 401 to rotate through the C-shaped plate 305. When the spherical rod 401 rotates with the C-shaped plate 305, it will push the bottom plate 402 up and down. At the same time, when the toothed plate 204 rotates, the rotation of the toothed plate 204 will drive the multiple sliding frames 502 to slide back and forth through the guidance of the bottom annular wave groove. When the multiple sliding frames 502 slide, they will drive the top plate 404 to slide synchronously through the multiple connecting rods 501. When the top plate 404 slides downward, the bottom plate 402 will slide upward. At this time, the top plate 404 and the bottom plate 402 will slide relative to each other. When the top plate 404 and the bottom plate 402 slide relative to each other, the waste water inside the main body 1 will be squeezed. When the waste water is squeezed by the relative movement of the top plate 404 and the bottom plate 402, a part of the waste water will diffuse outward between the top plate 404 and the bottom plate 402, and at the same time, another part of the waste water will gush outward through the multiple circular holes on the top plate 404 and the bottom plate 402. This gush action can generate strong convection, so that the waste water and the nitrification liquid are violently stirred in the local area, and the waste water and the nitrification liquid are fully dispersed, so that different levels inside the entire main body 1 can be effectively mixed, thereby accelerating the mixing speed and increasing the rate of the denitrification reaction, thereby improving the effect of the entire sewage treatment.

[0031] When the piston disc 307 slides downward inside the shaking cylinder 303, the downward movement of the piston disc 307 will drive the multiple rotating rods 602 to slide downward on the surface of the limiting ring 603 through the connecting disc 601. When the multiple rotating rods 602 slide downward, they will pass through the limiting ring 603 and make the bottom bottom plate contact with the surface of the filter material 105. Then, when the piston disc 307 rotates with the shaking cylinder 303, the multiple rotating rods 602 can be driven to rotate on the surface of the limiting ring 603 through the connecting disc 601. When the multiple rotating rods 602 rotate with the connecting disc 601, the scraper at the bottom will Scraping is performed on the top of the filter material 105. When the rotating rod 602 and the scraper are scraping, the filter material 105 can be smoothed, thereby reducing the impact of the water flow sprayed through the shaking tube 303 on the filter material 105. The filter material 105 may be loosened or lost due to the strong impact on the filter material 105, resulting in uneven distribution. The impurity retention capacity of the filter material 105 is reduced, and the uniformity of the filter material and the treatment effect of the wastewater are affected. At the same time, the loosening or loss of the filter material 105 that affects the attachment and growth of microorganisms can be reduced, thereby improving the denitrification efficiency.

[0032] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An internal circulation denitrification biological denitrification wastewater treatment device, comprising a main body (1) and a filter material (105), wherein the left side of the main body (1) is fixedly connected to a water inlet (101), the right side of the main body (1) is fixedly connected to a nitrification tank (107), the top of the main body (1) is fixedly connected to a top plate (102), the right side of the top plate (102) is fixedly connected to a side wall of the nitrification tank (107), and the top of the top plate (102) is fixedly connected to a circulation pump (103), characterized in that: The invention also comprises: a transmission mechanism (2), wherein the transmission mechanism (2) comprises a motor (201) fixedly connected to the top of the top plate (102), wherein the output end of the motor (201) passes through the bottom of the top plate (102) and extends into the interior of the main body (1), wherein the extension end of the motor (201) is fixedly connected to a stirring shaft (202), wherein the outer surface of the stirring shaft (202) located inside the main body (1) is fixedly connected to a plurality of L-plates (203), wherein the outer surface of the stirring shaft (202) is rotatably connected to a fixed cylinder (205), wherein the outer surface of the fixed cylinder (205) is fixedly connected to two support plates, wherein one end of the support plate away from the fixed cylinder (205) is fixedly connected to the inner wall of the main body (1); and a rotating mechanism (3), wherein the rotating mechanism (3) comprises a limit plate (301) rotatably connected to the bottom of the driven tooth (207), wherein the plurality of limit plates (301) are fixedly connected to a fixed disk (302) on one side close to the stirring shaft (202), A shaking cylinder (303) is arranged on the top of the fixed plate (302); a plurality of intermediate plates are fixedly connected to the outer surface of the shaking cylinder (303); one end of the intermediate plate away from the shaking cylinder (303) is rotatably connected to the side wall of the second L-plate (208); a limiting rod (304) is fixedly connected to the outer surface of the shaking cylinder (303); a C-shaped plate (305) is fixedly connected to the top of the shaking cylinder (303); the C-shaped plate (305) is close to the shaking cylinder (303) and is connected to the outer surface of the shaking cylinder (303). A long rod is fixedly connected to one side of the limiting rod (304), a spring frame (306) is fixedly connected to the top of the limiting rod (304), a piston disc (307) is fixedly connected to the side of the spring frame (306) close to the shaking cylinder (303), the inner wall of the piston disc (307) is slidably connected to the inside of the shaking cylinder (303), the bottom of the piston disc (307) penetrates the bottom of the shaking cylinder (303) and extends to the outside, and a plurality of water outlet holes are provided at the bottom of the shaking cylinder (303).

2. The internal circulation denitrification biological denitrification wastewater treatment device according to claim 1 is characterized in that: The output end of the circulation pump (103) is fixedly connected to a circulation pipe, the side of the nitrification tank (107) away from the water inlet (101) is fixedly connected to a water outlet (104), and the interior of the main body (1) is fixedly connected to a plurality of aeration pipes (106), and the sides of the plurality of aeration pipes (106) close to the water inlet (101) penetrate the outer wall of the main body (1) and extend to the outside, and the extension ends of the plurality of aeration pipes (106) are fixedly connected to connecting pipes.

3. The internal circulation denitrification biological denitrification wastewater treatment device according to claim 2 is characterized in that: The outer surface of the fixed cylinder (205) is rotatably connected to a toothed disc (204), the top of the toothed disc (204) is fixedly connected to a plurality of L-plates (203), a side of the toothed disc (204) away from the motor (201) is provided with an annular wave groove, the outer surface of the toothed disc (204) is meshingly connected to a plurality of bidirectional gear rods (206), the middle portion of the bidirectional gear rod (206) is rotatably connected to the inner wall of the main body (1), one end of the bidirectional gear rod (206) away from the toothed disc (204) is meshingly connected to a driven tooth (207), and the top of the driven tooth (207) is fixedly connected to L-plate 2 (208).

4. The internal circulation denitrification biological denitrification wastewater treatment device according to claim 3 is characterized in that: A moving mechanism (4) is arranged at the top of the shaking cylinder (303), and the moving mechanism (4) comprises a spherical rod (401) rotatably connected to the top of the C-shaped plate (305), and one end of the spherical rod (401) away from the C-shaped plate (305) is rotatably connected to a chassis (402), and the chassis (402) and the spherical rod (401) are eccentrically arranged, and a plurality of spring rods (403) are fixedly connected to the top of the chassis (402), and a top plate (404) is fixedly connected to the top of the plurality of spring rods (403).

5. The internal circulation denitrification biological denitrification wastewater treatment device according to claim 4 is characterized in that: A plurality of circular holes are provided at the bottom of the bottom plate (402), the tops of the plurality of circular holes penetrate through the top outer wall of the top plate (404), a second spring rod (405) is fixedly connected to the bottom of the top plate (404), the bottom of the second spring rod (405) penetrates through the bottom of the bottom plate (402) and extends to the outside, a protruding disc (406) is fixedly connected to the output end of the second spring rod (405), a plurality of return springs are fixedly connected to the top of the protruding disc (406), and the tops of the plurality of return springs are fixedly connected to the bottom outer wall of the bottom plate (402); The top plate (404) is slidably connected to the outer surface of the fixed cylinder (205).

6. The internal circulation denitrification biological denitrification wastewater treatment device according to claim 5 is characterized in that: An auxiliary mechanism (5) is provided on the top of the top plate (404), and the auxiliary mechanism (5) comprises a plurality of connecting rods (501) rotatably connected to the top of the top plate (404), and one end of the connecting rod (501) away from the top plate (404) is rotatably connected to a sliding frame (502), and the top of the sliding frame (502) is slidably connected to the inside of the annular wave groove.

7. The internal circulation denitrification biological denitrification wastewater treatment device according to claim 6 is characterized in that: A cleaning mechanism (6) is provided at the bottom of the limit plate (301), and the cleaning mechanism (6) comprises a connecting plate (601) fixedly connected to the extended end of the piston plate (307); the outer surface of the connecting plate (601) is rotatably connected to a plurality of rotating rods (602); the bottom of the rotating rods (602) is fixedly connected to a scraper; the outer surfaces of the plurality of rotating rods (602) are slidably connected to a limit ring (603); a side of the limit ring (603) close to the limit plate (301) is fixedly connected to a plurality of vortex springs (604); one end of the plurality of vortex springs (604) away from the limit ring (603) is fixedly connected to the bottom outer wall of the fixed plate (302); and the bottom of the limit ring (603) is in contact with the top of the filter material (105).

8. A method for using an internal circulation denitrification biological denitrification wastewater treatment device, characterized in that: The internal circulation denitrification biological denitrification wastewater treatment device as claimed in claim 7 is used, and the method comprises the following steps: S1: pipeline connection, laying filter material (105): firstly, the water inlet (101) is connected to the wastewater source, then the water outlet (104) is connected to the sedimentation tank, and multiple water inlets (101) are connected to the external air pump through the connecting pipe, and the filter material (105) is laid inside the main body (1); S2: wastewater transportation: then the wastewater is transported to the inside of the main body (1) through the water inlet (101), and when the wastewater enters the inside of the main body (1), it will spread to the nitrification tank (104). 7), then the two ends of the circulation pipe are connected to the nitrification tank (107) and the main body (1) respectively, and then the circulation pump (103) is started to transport the nitrification liquid generated in the nitrification tank (107) to the inside of the main body (1) and mix it; S3: stirring treatment: then the motor (201) is started to mix and stir the wastewater through the stirring shaft (202), and then the denitrifying bacteria attached to the filter material (105) use the organic carbon source in the wastewater as an electron donor to reduce the nitrate nitrogen into nitrogen gas and release it into the air. At the same time, the filter layer intercepts the suspended matter and impurities in the wastewater, so as to achieve the purpose of purifying the water quality.

Images