An ammonia-containing wastewater recycling device

Abstract

The present application relates to a kind of ammonia-containing wastewater recycling equipment, it relates to wastewater recycling technical field, the present application includes flocculation tank and sedimentation tank, flocculation tank outer wall is fixedly connected with sedimentation tank, flocculation tank is internally provided with fast zone and slow zone, and fast zone is communicated with slow zone by outer cylinder, and outer cylinder inner wall is provided with inner cylinder, and the both ends of inner cylinder outer wall are closedly connected with the both ends of outer cylinder inner wall by flexible connecting membrane, motor is fixedly installed on the top of fast zone by mounting frame and mounting plate three, motor output end is fixedly connected with shaft three, and impact mechanism is arranged on the position below stirring paddle in fast zone, impact mechanism is used to cyclically switch up and down overflow section, and sewage is impacted to specified direction, both meet the needs of fast mixing zone required forced fast mixing and drug water mixing to improve flocculation effect, and meet the needs of slow mixing zone required mild disturbance to make flocculation contact combination avoid breaking to improve sedimentation efficiency.

Description

Technical Field

[0001] This invention relates to the field of wastewater recycling technology, specifically to an ammonia-containing wastewater recycling device. Background Technology

[0002] In the process of wastewater recycling, unlike other wastewater treatments that primarily aim at harmlessness, the treatment of ammonia-containing wastewater prioritizes resource recovery. Ammonia is an important chemical material, and directly converting it into harmless ammonia gas would be a huge economic waste. The current mainstream process involves pumping high-concentration ammonia-containing wastewater into a pretreatment section consisting of an oil separator, a coagulation reaction tank, and an inclined plate settling tank. This section selectively removes impurities such as tar and suspended solids that would clog the trays and contaminate the products. The purified clarified liquid is then sent to a distillation column, where the volatility of ammonia is utilized to strip it from the water under alkaline high-temperature conditions. The ammonia-rich vapor produced at the top of the column then enters an absorption column for recycling and absorption, transforming it into a valuable resource.

[0003] In the pretreatment of ammonia-containing wastewater for recycling, namely the flocculation and sedimentation of suspended impurities, industrial coagulation reaction tanks commonly adopt a series of mechanical stirring. By setting different stirring speeds in different zones, the needs of the "fast mixing" and "slow mixing" stages are met respectively. The first stage is the fast mixing zone, which relies on high stirring intensity to quickly and uniformly mix the added coagulant with the wastewater, destabilizing the colloids. However, due to the continuous nature of ammonia-containing wastewater recycling, there are cases where the wastewater flows into the slow mixing zone before it has coagulated. The second stage is the slow mixing zone, which relies on lower stirring intensity to promote collision and bridging between destabilized particles, forming larger flocs that are easy to settle. The large flocs that have initially formed in the slow mixing zone are often drawn in by the residual eddies from the fast mixing zone and broken again, resulting in finer flocs, deteriorated settling performance, and seriously affecting the solid-liquid separation efficiency of the subsequent sedimentation tank.

[0004] To address the aforementioned technical deficiencies, a solution is proposed. Summary of the Invention

[0005] This invention provides an ammonia-containing wastewater recycling device, which solves the problem that large flocs that have initially formed in the slow mixing zone are often drawn into the residual eddies from the fast mixing zone and broken again, resulting in floc refinement and deterioration of settling performance.

[0006] To achieve the dual goals of satisfying both the need for forced rapid mixing and chemical mixing in the fast mixing zone to improve flocculation, and the need for gentle disturbance in the slow mixing zone to allow flocs to contact and combine, preventing breakage and facilitating sedimentation efficiency, this invention achieves this through the following technical solution: An ammonia-containing wastewater recycling device, comprising a flocculation tank and a sedimentation tank, wherein the outer wall of the flocculation tank is fixedly connected to the sedimentation tank, and the flocculation tank is provided with a fast zone and a slow zone, which are connected by an outer cylinder. An inner cylinder is inserted through the inner wall of the outer cylinder, and the two ends of the outer wall of the inner cylinder and the two ends of the inner wall of the outer cylinder are sealed and connected by a flexible connecting membrane. A motor is fixedly installed at the top of the fast zone through a mounting frame and a mounting plate, and a rotating shaft is fixedly connected to the output end of the motor. Several stirring blades are fixedly connected to the rotating shaft from top to bottom. An impact mechanism is provided in the fast zone below the stirring blades. The impact mechanism is used to cyclically switch the upper and lower flow sections to flush the wastewater in a specified direction. The impact mechanism includes two rotating shafts fixed in the flocculation tank. The rotating shafts are arranged in a front-to-back pattern and a flow channel is provided between the two rotating shafts. A rotating cylinder is sleeved on and rotatably connected to the rotating shaft. A roller is fixedly connected to the rotating cylinder. Two flaps are fixedly connected to the rotating cylinder. The two flaps are symmetrically distributed about the rotating cylinder as an axis of symmetry. A drive unit is provided on the mounting frame. The drive unit is used to drive the flaps distributed in the front and back to rotate synchronously in opposite directions.

[0007] Furthermore, the flocculation tank is fixedly connected with two partitions, which are distributed on the left and right. The fast zone is located on the left side of the partition, and the slow zone is located on the right side of the partition. The end of the rotating shaft away from the inner wall of the flocculation tank is fixedly connected to the partition. The outer cylinder is transversely inserted through the two partitions and fixedly connected to the partitions.

[0008] Furthermore, the drive unit includes a second mounting plate fixedly mounted on a mounting frame. A reducer is fixedly mounted on the bottom end of the second mounting plate. A second rotating shaft is fixedly connected to the input end of the reducer. Both the second and third rotating shafts are fixedly connected to bevel gears, and the two bevel gears mesh with each other. A fourth rotating shaft is fixedly connected to the output end of the reducer. A single-tooth gear is fixedly mounted on the fourth rotating shaft. A first mounting plate is fixedly connected to the top end of the mounting frame. The first mounting plate is rotatably connected to a full-tooth gear via the first rotating shaft. There are two full-tooth gears, and they mesh with each other. During the rotation of the single-tooth gear, it meshes with the two full-tooth gears in sequence. The two full-tooth gears are hinged to a connecting rod at the eccentric end near the first mounting plate and the side of the roller away from the flip plate. The two connecting rods are symmetrically distributed front and back.

[0009] Furthermore, a transmission part is provided between the inner cylinder and the first roller, the transmission part being used to transmit the rotation of the rotating cylinder to the inner cylinder, so that the inner cylinder can sway left and right.

[0010] Furthermore, the transmission unit includes a slide rail fixedly connected between the inner wall of the flocculation tank and the partition on the left side. There are two slide rails, which are distributed front and back. The slide rail at the front end runs through the front and back direction, while the slide rail at the rear end is closed at the rear end and open at the front end. A connecting plate is slidably connected between the two slide rails. The front end of the connecting plate extends through to the front of the slide rail at the front end. The top of the connecting plate at the front end is hinged to a connecting rod at the eccentric position of the roller near the flap. The connecting plate and the roller are hinged to both ends of the connecting rod via fisheye bearings. The right side of the connecting plate is fixedly connected to the inner cylinder.

[0011] Furthermore, flexible bellows are provided on the outside of both fisheye bearings. One end of each flexible bellows is closedly connected to the second connecting rod, and the other end is closedly connected to the first connecting plate and the first roller, respectively.

[0012] Furthermore, a disturbance mechanism is provided in the slow speed zone. The disturbance mechanism is used to receive the movement of the inner cylinder and to disturb the flocs by the movement of the inner cylinder. The disturbance mechanism includes a fixed frame that is fixedly connected to the flocculation tank. Several rotating rods are rotatably connected from top to bottom on the inner wall of the fixed frame. A disturbance plate is fixedly connected to the rotating rod at the position on the inner wall of the fixed frame. The two ends of the rotating rod extend to the outer wall of the fixed frame. Rollers are fixedly connected to the two ends of the rotating rod. A connecting rod is hinged at the eccentric position of two adjacent rollers. A contact rod is symmetrically fixedly connected to the bottom of the lowest roller.

[0013] Furthermore, a second connecting plate is fixedly connected to the right end of the inner cylinder. A connecting rod and an installation rod are fixedly connected to the bottom end of the second connecting plate from left to right. A roller is rotatably connected to the top of the installation rod. The roller contacts two abutting rods in sequence as the installation rod moves left and right.

[0014] The present invention has the following beneficial effects: This ammonia-containing wastewater recycling equipment uses an impact mechanism to drive front and rear flaps to rotate synchronously in opposite directions, cyclically switching the upper and lower flow sections. When the flaps open and close, the wastewater is forced to impact upwards, and when the flaps close and open, the wastewater is forced to impact downwards. This alternating up-and-down impact flow ensures full-depth mixing of chemicals and wastewater in the fast mixing zone, preventing incomplete flocculation caused by continuously input wastewater entering the slow mixing zone before it reaches the rotating area of ​​the mixing blades. Simultaneously, the drive unit utilizes the power of the mixing blades' drive motor, with gear transmission positioned above the wastewater surface and underwater via connecting rods to reduce the adverse effects of flocculation on transmission stability, thus extending equipment lifespan. Furthermore, the transmission unit converts the oscillation of the rotating cylinder in the impact mechanism into the left-right swaying of the inner cylinder, which in turn drives the disturbance mechanism in the slow mixing zone, creating a gentle, low-shear disturbance environment throughout the slow mixing zone. The entire device, through a single driving force, satisfies both the forced rapid mixing and chemical mixing required in the fast mixing zone to improve flocculation, and the gentle disturbance required in the slow mixing zone to ensure floc contact and prevent breakage, thereby improving sedimentation efficiency.

[0015] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is another schematic diagram of the overall structure of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the fast and slow regions of the present invention; Figure 5 This is a schematic diagram of the structure of the inner cylinder of the present invention, in which a connecting plate 1 and a connecting plate 2 are fixedly connected to both ends respectively; Figure 6 This is a schematic diagram of the structure on which a motor is fixedly mounted on the mounting plate of the present invention; Figure 7 for Figure 6 Enlarged structural diagram at point B; Figure 8 This is a schematic diagram of the structure of the present invention, in which a connecting rod is hinged at the eccentric end of the full-tooth gear near the mounting plate and the end of the roller away from the flap. Figure 9 This is a schematic diagram of the structure of the outer cylinder and inner cylinder of the present invention, which are sealed and connected at both ends by a flexible connecting membrane; Figure 10 This is a schematic diagram of the structure of the fixing frame of the present invention, in which several rotating rods are uniformly rotatably connected to the inner wall. Figure 11 for Figure 10 Enlarged schematic diagram of the structure at point C.

[0017] In the diagram: 1. Flocculation tank; 2. Sedimentation tank; 3. Mounting frame; 4. Baffle plate; 5. Fast speed zone; 6. Slow speed zone; 7. Mounting plate one; 8. Shaft one; 9. Full gear; 10. Single gear; 11. Reducer; 12. Mounting plate two; 13. Shaft two; 14. Mounting plate three; 15. Motor; 16. Shaft three; 17. Shaft four; 18. Drum; 19. Bevel gear; 20. Agitator blade; 21. Shaft five; 22. 23. Slide rail; 24. Outer cylinder; 25. Fixing frame; 26. Rotating cylinder; 27. Roller 1; 28. Flip plate; 29. ​​Connecting rod 1; 20. Connecting rod 2; 31. Fish eye bearing; 32. Flexible corrugated pipe; 33. Connecting plate 1; 34. Inner cylinder; 35. Flexible connecting membrane; 36. Connecting plate 2; 37. Connecting rod; 38. Mounting rod; 39. Rotating rod; 40. Connecting rod 3; 41. Disturbance plate; 42. Roller 2; 43. Abutment rod. Detailed Implementation

[0018] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0019] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0020] Please see Figures 1-11 This invention provides a technical solution: an ammonia-containing wastewater recycling device, mainly comprising a flocculation tank 1 and a sedimentation tank 2, with the outer wall of the flocculation tank 1 fixedly connected to the sedimentation tank 2. The flocculation tank 1 is internally divided into a fast zone 5 and a slow zone 6 by two partitions 4 distributed to the left and right of the partitions 4, with the fast zone 5 located on the left side of the partitions 4 and the slow zone 6 located on the right side of the partitions 4.

[0021] The specific structures and working principles of other steps such as transmission and sedimentation in flocculation tank 1 and sedimentation tank 2 are all existing technologies. At the same time, the internal structures and working principles of the motor 15 and reducer 11 below are also existing technologies.

[0022] The fast zone 5 and the slow zone 6 are connected by an outer cylinder 23, which is horizontally inserted and fixed to two partitions 4. An inner cylinder 33 is inserted inside the outer cylinder 23. The two ends of the outer wall of the inner cylinder 33 are sealed to the two ends of the inner wall of the outer cylinder 23 by a flexible connecting membrane 34. The inner cylinder 33 can sway relative to the outer cylinder 23 from side to side without allowing sewage to enter between the outer cylinder 23 and the inner cylinder 33. The flexible connecting membrane 34 is made of thermoplastic polyurethane. During the sewage transfer process, the inner cylinder 33 continuously sways, and the pipe wall is always making a slight reciprocating motion. This motion will generate a continuous shearing effect between the pipe wall and the sewage, making it difficult for oily sludge flocs to adhere and take root, thus avoiding blockage.

[0023] Mounting plate 3 14 is fixedly mounted on the top of rapid zone 5 via mounting bracket 3. Motor 15 is fixed on mounting plate 3 14. The output end of motor 15 is fixedly connected to rotating shaft 3 16. Several stirring blades 20 are fixedly mounted on rotating shaft 3 16 from top to bottom for preliminary stirring and mixing of sewage and chemicals in rapid zone 5.

[0024] Mounting plate 3 14 is fixedly mounted on the top of rapid zone 5 via mounting bracket 3. Motor 15 is fixed on mounting plate 3 14. The output end of motor 15 is fixedly connected to rotating shaft 3 16. Several stirring blades 20 are fixedly mounted on rotating shaft 3 16 from top to bottom for preliminary stirring and mixing of sewage and chemicals in rapid zone 5.

[0025] An impact mechanism is provided in the rapid zone 5 below the stirring blade 20. The impact mechanism includes two rotating shafts 21 distributed front and back. One end of the rotating shaft 21 is fixedly connected to the inner wall of the flocculation tank 1, and the other end is fixedly connected to the partition 4 on the corresponding side. A flow channel for sewage to flow through is left between the two rotating shafts 21. A rotating cylinder 25 is sleeved on and rotatably connected to each rotating shaft 21. Two flaps 27 are fixedly connected to the rotating cylinder 25. The two flaps 27 are symmetrically arranged up and down with the rotating cylinder 25 as the axis of symmetry. A roller 26 is also fixedly connected to the rotating cylinder 25.

[0026] The drive unit is mounted on the mounting bracket 3 and is used to drive the flaps 27 on the two rotating cylinders 25 distributed in front and behind to rotate synchronously in opposite directions or in opposite directions.

[0027] The drive unit includes a second mounting plate 12 fixedly mounted on the mounting bracket 3. A reducer 11 is fixedly mounted on the bottom end of the second mounting plate 12. The input end of the reducer 11 is fixedly connected to a second rotating shaft 13. Both the second rotating shaft 13 and the third rotating shaft 16 are fixedly connected to bevel gears 19, and the two bevel gears 19 mesh with each other. Thus, part of the power of the motor 15 is distributed to the third rotating shaft 16 to drive the stirring blade 20, and the other part is transmitted to the reducer 11 through the bevel gears 19.

[0028] The output end of the reducer 11 is fixedly connected to the rotating shaft 17, and a single-tooth gear 10 is fixedly installed on the rotating shaft 17. The top of the mounting bracket 3 is fixedly connected to the mounting plate 7, and the mounting plate 7 is rotatably connected to two meshing full-tooth gears 9 through the rotating shaft 8. There are two rotating shafts 8 and two full-tooth gears 9, and one full-tooth gear 9 is fixedly connected to each rotating shaft 8.

[0029] During rotation, the single-tooth gear 10 alternately meshes with two full-tooth gears 9. The two full-tooth gears 9 are hinged to the eccentric part of the corresponding side roller 26 away from the flip plate 27 at the end near the mounting plate 7, and the two connecting rods 28 are symmetrically distributed front and back.

[0030] When the motor 15 starts, the rotating shaft 16 drives the stirring blade 20 to rotate for initial stirring. At the same time, the power is transmitted to the single-tooth gear 10 through the bevel gear 19 and the reducer 11. When the single-tooth gear 10 rotates counterclockwise, it first meshes with the full-tooth gear 9 on the front side, driving the full-tooth gear 9 to rotate a certain angle and then disengaging. The single-tooth gear 10 continues to rotate and then meshes with the full-tooth gear 9 on the rear side, driving the full-tooth gear 9 to rotate in the opposite direction. The alternating rotation of the two full-tooth gears 9, through their respective connecting rods 28, pushes the rollers 26 on the corresponding side to drive the rotating cylinder 25 to swing back and forth around the rotating shaft 21.

[0031] The oscillation of roller 26 drives the rotating cylinder 25 and its two flaps 27 to rotate synchronously. When the two flaps 27 rotate towards each other, the upper flap 27 flips downward and the lower flap 27 flips upward. The upper flow cross section between the flaps 27 is reduced and the lower flow cross section is expanded, and the water flow is forced to impact downward. When the two flaps 27 rotate in opposite directions, the lower flap 27 flips downward and the upper flap 27 flips upward. The lower flow cross section is reduced and the upper flow cross section is expanded, and the water flow is forced to impact upward. This cycle continues, and the flaps 27 continuously switch the upper and lower flow cross sections, forming an alternating impact water flow in the rapid zone 5, so that the agent and sewage can be mixed at full depth without dead angles in the vertical direction.

[0032] Between the partition 4 on the left and the inner wall of the flocculation tank 1, two slide rails 22 are fixedly connected in a front-to-back manner. The slide rail 22 at the front end is completely through in the front-to-back direction, while the slide rail 22 at the rear end is closed at the rear end and open at the front end. A connecting plate 32 is slidably connected between the two slide rails 22. The front end of the connecting plate 32 extends forward through the front slide rail 22, and the right side of the connecting plate 32 is fixedly connected to the left end of the inner cylinder 33.

[0033] The connecting plate 32 extends to the top of the front part and is hinged to the roller 26 near the eccentric part of the flip plate 27 by the connecting rod 29. The connecting rod 29 and the connecting plate 32, as well as the connecting rod 29 and the roller 26, are connected by a fisheye bearing 30 to adapt to the angle change during the movement. The initial state of the connecting rod 29 is the tilted state.

[0034] Flexible bellows 31 are respectively fitted on the outside of the two fisheye bearings 30. One end of each flexible bellows 31 is closedly connected to the end of the connecting rod 29, and the other end is closedly connected to the surface of the corresponding connecting plate 32 or roller 26, so as to completely isolate the fisheye bearings 30 from the external sewage, and prevent oily flocs and particulate impurities from entering the hinge point while ensuring flexible transmission.

[0035] The fisheye bearing 30 is existing technology. Its inner ring has a convex spherical outer surface and its outer ring has a concave spherical inner surface. The two work together to form a spherical sliding pair, which allows the connecting rod 29 to have the ability to swing freely at multiple angles relative to the roller 26 and the connecting plate 32.

[0036] When roller 26 reciprocates under the action of the drive unit, its eccentric hinge point near the flip plate 27 moves in an arc around the rotating shaft 21. This eccentric hinge point is connected to one end of the connecting rod 29 through a fisheye bearing 30. The other end of the connecting rod 29 is also hinged to the top of the connecting plate 32 extending to the front part through a fisheye bearing 30.

[0037] During the motion transmission process, the circular motion of the eccentric hinge point of roller 26 drives the connecting rod 29 to swing in space through the fisheye bearing 30 at the front end. The swing of the connecting rod 29 is then transmitted to the connecting plate 32 through the fisheye bearing 30 at the rear end. Since the connecting plate 32 is constrained by the two slide rails 22 to slide only in a straight line in the front-back direction, the lateral motion component transmitted by the connecting rod 29 is fully absorbed by the spherical joint of the fisheye bearing 30. The connecting plate 32 ultimately only retains the reciprocating linear motion component along the slide rail 22, thereby causing the inner cylinder 33 to sway left and right.

[0038] As the inner cylinder 33 sways left and right, the flexible connecting membrane 34 between the two ends of its outer wall and the outer cylinder 23 undergoes elastic deformation. Sewage flows directly through the central channel inside the inner cylinder 33, enters the inner cavity of the inner cylinder 33 from the fast zone 5 side, and flows out from the slow zone 6 side.

[0039] A disturbance mechanism is installed in the slow zone 6 to receive the movement of the inner cylinder 33 and convert it into a gentle disturbance to the water in the slow zone 6.

[0040] The disturbance mechanism includes a fixed frame 24 fixedly connected to the flocculation tank 1. Several rotating rods 38 are rotatably connected from top to bottom on the inner wall of the fixed frame 24 via bearings. A disturbance plate 40 is fixedly connected to the part of each rotating rod 38 located between the inner walls of the fixed frame 24. The two ends of the rotating rod 38 extend to the outer wall of the fixed frame 24 and are fixedly connected to rollers 41. Two adjacent rollers 41 are hinged at their eccentric positions via connecting rods 39 to form a multi-stage linkage mechanism.

[0041] At the bottom of the lowest roller 41, there are two abutment rods 42 that are fixedly connected symmetrically on the left and right sides.

[0042] A connecting plate 35 is fixedly connected to the right end of the inner cylinder 33. A connecting rod 36 and a mounting rod 37 are fixedly connected to the bottom end of the connecting plate 35 from left to right. A roller 18 is rotatably connected to the top end of the mounting rod 37.

[0043] When the inner cylinder 33 sways left and right under the drive of the transmission unit, the connecting plate 35 at its right end drives the connecting rod 36, the mounting rod 37 and the roller 18 to move left and right together.

[0044] As the roller 18 moves to the left, it comes into contact with the left-side abutment rod 42, pushing the abutment rod 42 to swing to the left, causing the bottom roller 41 to rotate counterclockwise by a certain angle. As the roller 18 moves to the right, it comes into contact with the right-side abutment rod 42, pushing the abutment rod 42 to swing to the right, causing the bottom roller 41 to rotate clockwise by a certain angle.

[0045] The reciprocating rotation of the bottom roller 41 is transmitted sequentially to the upper rollers 41 through the connecting rod 39, causing all rotating rods 38 and their disturbance plates 40 to reciprocate and swing synchronously. Each layer of disturbance plates 40 forms a full-range, gentle low-shear disturbance in the slow zone 6, promoting the collision and bridging between micro flocs and avoiding mechanical damage to the large flocs that have already formed.

[0046] Working principle: After high-concentration ammonia-containing wastewater enters the rapid zone 5 of the flocculation tank 1, coagulants and pH adjusters are added simultaneously. The motor 15 drives the stirring blades 20 to rotate through the rotating shaft 16, which performs preliminary mechanical stirring and mixing of the wastewater and the agents, so that the agents are quickly dispersed.

[0047] Meanwhile, the motor 15 transmits part of its power to the reducer 11 through the bevel gear 19. After reduction and torque amplification, the reducer drives the single-tooth gear 10 to rotate. The single-tooth gear 10 alternately meshes with two meshing full-tooth gears 9, driving the two full-tooth gears 9 to rotate periodically in both directions. The rotation of the full-tooth gears 9 drives the two front and rear rollers 26 to swing back and forth around the rotating shaft 21 through their respective hinged connecting rods 28. The swinging of the rollers 26 drives the rotating cylinder 25 and the flaps 27 on it to rotate synchronously, causing the two sets of flaps 27 to periodically flip towards or away from each other.

[0048] When the two sets of flaps 27 rotate towards each other, the upper flow cross section is reduced, and the water flow is forced to impact downwards. When the two sets of flaps 27 rotate away from each other, the lower flow cross section is reduced, and the water flow is forced to impact upwards. The flaps 27 continuously generate alternating up and down impact water flow below the stirring blades 20, repeatedly rolling up the lower layer of water that the stirring blades 20 have not fully mixed, so that the agent and wastewater can achieve rapid and uniform mixing of full depth and no dead angle in the vertical direction. The colloidal particles in the wastewater are rapidly destabilized under the action of the agent.

[0049] The mixed wastewater, carrying the destabilized micro-flocs, flows into the fast zone 5 from one side through the central channel formed by the inner wall of the inner cylinder 33, and flows out from the slow zone 6 from the other side, entering the slow zone 6.

[0050] During the process of wastewater transmission through the inner cylinder 33, the circular motion of the eccentric hinge point of the roller 26 in the motion transmission process of the drive unit drives the connecting rod 29 to swing in space through the fisheye bearing 30 at the front end. The swing of the connecting rod 29 is then transmitted to the connecting plate 32 through the fisheye bearing 30 at the rear end. Since the connecting plate 32 is constrained by the two slide rails 22 to slide only in a straight line in the front-back direction, the lateral motion component transmitted by the connecting rod 29 is fully absorbed by the spherical joint of the fisheye bearing 30. The connecting plate 32 ultimately only retains the back-to-back reciprocating straight motion component along the slide rail 22, thereby causing the inner cylinder 33 to sway left and right. The swaying of the inner cylinder 33 causes the connecting plate 35, connecting rod 36, mounting rod 37 and roller 18 at its right end to move back and forth together. When the roller 18 moves to the left, it contacts the left abutment rod 42 and pushes it to swing to the left. When it moves to the right, it contacts the right abutment rod 42 and pushes it to swing to the right, thereby driving the bottom roller 41 to rotate back and forth.

[0051] The reciprocating rotation of the lowest roller 41 is transmitted sequentially to the rollers 41 of each layer above through the connecting rods 39, causing all the rotating rods 38 and the disturbance plates 40 within the fixed frame 24 to reciprocate and oscillate synchronously. Each layer of disturbance plates 40 forms a gentle, low-shear disturbance water flow throughout the slow zone 6.

[0052] Under the gentle disturbance of the disturbance plate 40, the destabilized micro-flocs in the slow zone 6 have ample opportunities for collision and contact. The long-chain molecules of the polymer coagulant fully bridge between the micro-flocs, and the floc particles gradually grow into large flocs with uniform size and dense structure.

[0053] Wastewater carrying large flocs enters sedimentation tank 2 from the outlet at the end of slow zone 6. In sedimentation tank 2, the large flocs settle rapidly due to their own gravity, achieving efficient solid-liquid separation. The supernatant after sedimentation enters the subsequent ammonia recovery process for recycling. The sludge discharged from the bottom of sedimentation tank 2 periodically is dewatered and transported off-site for disposal as hazardous waste in compliance with regulations.

[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An ammonia-containing wastewater recycling device, comprising a flocculation tank (1) and a sedimentation tank (2), characterized in that: The outer wall of the flocculation tank (1) is fixedly connected to the sedimentation tank (2). The flocculation tank (1) is provided with a fast zone (5) and a slow zone (6). The fast zone (5) and the slow zone (6) are connected by an outer cylinder (23). An inner cylinder (33) is provided through the inner wall of the outer cylinder (23). The two ends of the outer wall of the inner cylinder (33) are closed and connected to the two ends of the inner wall of the outer cylinder (23) by a flexible connecting membrane (34). The top of the fast zone (5) is fixedly installed with a motor (15) through a mounting frame (3) and a mounting plate three (14). The output end of the motor (15) is fixedly connected with a rotating shaft three (16). The rotating shaft three (16) is fixedly connected with several stirring blades (20) from top to bottom. An impact mechanism is provided in the fast zone (5) below the stirring blades (20). The impact mechanism is used to cyclically switch the upper and lower flow sections to flush the sewage in a specified direction. The impact mechanism includes a rotating shaft five (21), which is fixed in the flocculation tank (1). There are two rotating shafts five (21) distributed front and back. A flow channel is provided between the two rotating shafts five (21). A rotating cylinder (25) is sleeved on the rotating shaft five (21) and rotatably connected to it. A roller one (26) is fixedly connected to the rotating cylinder (25). Two flaps (27) are fixedly connected to the rotating cylinder (25). The two flaps (27) are symmetrically distributed up and down with the rotating cylinder (25) as the axis of symmetry. A driving part is provided on the mounting frame (3). The driving part is used to drive the flaps (27) distributed front and back to rotate synchronously in opposite directions or in opposite directions.

2. The ammonia-containing wastewater recycling equipment according to claim 1, characterized in that: The flocculation tank (1) is fixedly connected with a partition (4). There are two partitions (4) and they are distributed on the left and right. The fast zone (5) is located on the left side of the partition (4) and the slow zone (6) is located on the right side of the partition (4). The end of the rotating shaft (21) away from the inner wall of the flocculation tank (1) is fixedly connected to the partition (4). The outer cylinder (23) is transversely inserted through the two partitions (4) and fixedly connected to the partitions (4).

3. The ammonia-containing wastewater recovery and utilization equipment according to claim 2, characterized in that: The drive unit includes a second mounting plate (12) fixedly mounted on a mounting bracket (3). A reducer (11) is fixedly mounted on the bottom end of the second mounting plate (12). A second rotating shaft (13) is fixedly connected to the input end of the reducer (11). Both the second rotating shaft (13) and the third rotating shaft (16) are fixedly connected to bevel gears (19), and the two bevel gears (19) mesh with each other. A fourth rotating shaft (17) is fixedly connected to the output end of the reducer (11), and a single-tooth gear (10) is fixedly mounted on the fourth rotating shaft (17). Mounting plate 1 (7) is fixedly connected to the top of mounting bracket (3). Mounting plate 1 (7) is rotatably connected to full gear (9) via rotating shaft 1 (8). There are two full gears (9) that mesh with each other. During rotation, single gear (10) meshes with the two full gears (9) in sequence. The two full gears (9) are hinged to connecting rod 1 (28) at the eccentric point on the side away from the flip plate (27) of roller 1 (26) near the mounting plate 1 (7). The two connecting rods 1 (28) are symmetrically distributed front and back.

4. The ammonia-containing wastewater recovery and utilization equipment according to claim 2, characterized in that: A transmission part is provided between the inner cylinder (33) and the first roller (26). The transmission part is used to transmit the rotation of the rotating cylinder (25) to the inner cylinder (33), so that the inner cylinder (33) can swing left and right.

5. The ammonia-containing wastewater recycling equipment according to claim 4, characterized in that: The transmission unit includes a slide rail (22) fixedly connected between the inner wall of the flocculation tank (1) and the partition plate (4) on the left side. There are two slide rails (22) and they are distributed in front and back. The slide rail (22) at the front end is continuous in the front and back direction, and the slide rail (22) at the rear end is closed at the rear end and open at the front end. A connecting plate (32) is slidably connected between the two slide rails (22). The front end of the connecting plate (32) extends to the front of the slide rail (22) at the front end. The top of the connecting plate (32) at the front end is hinged to the roller (26) near the flap (27) at the eccentric position. The two ends of the connecting plate (32) and the roller (26) are hinged to the connecting rod (29) through the fish-eye bearing (30). The right side of the connecting plate (32) is fixedly connected to the inner cylinder (33).

6. The ammonia-containing wastewater recovery and utilization equipment according to claim 5, characterized in that: Both of the fisheye bearings (30) are provided with flexible bellows (31). One end of the two flexible bellows (31) is closedly connected to the second connecting rod (29), and the other end is closedly connected to the first connecting plate (32) and the first roller (26) respectively.

7. The ammonia-containing wastewater recovery and utilization equipment according to claim 5, characterized in that: A disturbance mechanism is provided in the slow zone (6). The disturbance mechanism is used to support the movement of the inner cylinder (33) and to disturb the flocs by the movement of the inner cylinder (33). The disturbance mechanism includes a fixed frame (24) fixedly connected to the flocculation tank (1). Several rotating rods (38) are rotatably connected from top to bottom on the inner wall of the fixed frame (24). A disturbance plate (40) is fixedly connected to the rotating rod (38) at the position of the inner wall of the fixed frame (24). The two ends of the rotating rod (38) extend to the outer wall of the fixed frame (24). Rollers (41) are fixedly connected to the two ends of the rotating rod (38). A connecting rod (39) is hinged at the eccentric position of two adjacent rollers (41). A contact rod (42) is symmetrically fixedly connected to the bottom of the lowest roller (41).

8. The ammonia-containing wastewater recycling equipment according to claim 7, characterized in that: The inner cylinder (33) is fixedly connected to the right end of the connecting plate two (35). The bottom end of the connecting plate two (35) is fixedly connected to the connecting rod (36) and the mounting rod (37) from left to right. The top end of the mounting rod (37) is rotatably connected to the roller (18). The roller (18) contacts the two abutting rods (42) in turn as the mounting rod (37) moves left and right.

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