A reactor for continuous flow granular sludge wastewater treatment

Abstract

This invention belongs to the field of granular sludge wastewater treatment, specifically a reactor for continuous flow granular sludge wastewater treatment. It includes a reaction tank with multiple drain pipes installed at the bottom inner side. A central roller is rotatably connected to the center of the reaction tank, and multiple power fans are fixedly connected to the outer side of the central roller. A baffle is fixedly connected inside the reaction tank, located above the central roller. A separator is installed near the top inner side of the reaction tank, and an exhaust valve is installed at the top. This arrangement ensures sufficient contact between the granular sludge and the wastewater, effectively improving the wastewater treatment effect and greatly reducing the problem of insufficient contact between the wastewater and the granular sludge due to the rapid upward flow of wastewater, which leads to reduced treatment efficiency. Furthermore, the rotation of the power fans and the central roller is driven by the wastewater jet, reducing the required energy input.

Description

Technical Field

[0001] This invention belongs to the field of granular sludge wastewater treatment, specifically a reactor for continuous flow granular sludge wastewater treatment. Background Technology

[0002] Granular sludge is a type of granular activated sludge formed by the self-aggregation of microorganisms. It is widely used in anaerobic and aerobic wastewater treatment processes. These particles have a dense structure and a relatively large particle size, typically between 0.5 and 5 millimeters.

[0003] There are many types of granular sludge processors. Among them, the upflow reactor is a biological treatment technology widely used in wastewater treatment. Its core feature is that wastewater flows from bottom to top through the reactor and comes into contact with the granular sludge. Microorganisms decompose organic matter under anaerobic conditions to produce biogas. Continuous flow refers to the continuous flow of materials or fluids in the system without obvious pauses or interruptions.

[0004] In traditional upflow reactors, granular sludge is suspended within the water flow by the lift force. Wastewater flowing from top to bottom then comes into contact with the granular sludge, completing the sludge removal function. However, short-circuiting occurs during the wastewater flow in upflow reactors, meaning that the wastewater stays in the treatment area for a much shorter time than intended. Strict control of the wastewater inflow rate is necessary to ensure continuous flow treatment. Furthermore, because the suspended granular sludge is randomly distributed, it is difficult to guarantee that each cubic meter of water is treated to the same degree.

[0005] Therefore, the present invention provides a reactor for continuous flow granular sludge wastewater treatment. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: A reactor for continuous flow granular sludge wastewater treatment according to the present invention includes a reaction tank, a plurality of sewage pipes are installed on the bottom inner side of the reaction tank, a central roller is rotatably connected to the middle of the reaction tank, a plurality of power fans are fixedly connected to the outer side of the central roller, a baffle is fixedly connected inside the reaction tank, the baffle is located above the central roller, a separator is provided on the top inner side of the reaction tank, an exhaust valve is installed on the top of the reaction tank, a water outlet valve is installed on the top outer side of the reaction tank, the plurality of sewage pipes are arranged at equal intervals, a side nozzle is installed between adjacent sewage pipes, the vertical cross section of the sewage pipe is arranged in an isosceles triangle, the sewage outlet of the sewage pipe is opened on both sides, and the sewage outlets of adjacent sewage pipes are staggered, a sewage pump is provided on the outside of the reaction tank, and the sewage pump is connected to the sewage pipes and the side nozzles through a transfer pipe;

[0008] By configuring the reaction tank and central roller, the wastewater to be treated is connected to a wastewater pump. The wastewater pump sends the wastewater to the bottom of the reaction tank through transfer and discharge pipes. Simultaneously, the wastewater pump also sprays some wastewater upwards through side nozzles. The water flow from the side nozzles acts on the power fan, causing the central roller to rotate slowly. As the central roller and power fan rotate, the granular sludge and wastewater inside the reaction tank rotate clockwise. Under inertia, larger granular sludge particles move to the edge of the power fan, while smaller granular sludge particles remain between the power fans. Because the baffle is located above the central roller, and there is always rising sludge water at the bottom, the granular sludge does not easily detach from the baffle. The treatment space creates a clockwise circulating water flow zone in the middle of the reaction tank. Wastewater undergoes at least half a cycle of circulation from bottom to top, and most of the wastewater is unable to escape the circulation space after the first cycle. Through multiple cycles, the wastewater can make sufficient contact with the granular sludge in the circulating water flow zone, thereby improving the wastewater treatment efficiency. As wastewater is continuously injected from the bottom, the water flow escapes the circulation section, passing through the gap between the baffle and the reaction tank. Because the top surface of the baffle is arc-shaped, and the granular sludge on the outer side is mostly large-mass granular sludge, after passing through the baffle, due to the lack of significant lift, it is subjected to gravity and the action of the separator. In operation, large granular sludge particles fall to the edge of the baffle. Since this edge is also the only outlet for the rising water flow, the granular sludge cannot settle quickly at this point, causing it to accumulate and further treat the rising wastewater, thus ensuring effective wastewater treatment. After treating the wastewater, the granular sludge produces biogas, which rises to the top of the reactor and is eventually discharged through the vent valve. Meanwhile, the treated wastewater, as it moves upwards, is processed by a separator to remove the granular sludge. Finally, the treated water is discharged through the outlet valve. This design ensures sufficient contact between the granular sludge and the wastewater. This design effectively improves wastewater treatment, significantly reducing the problem of insufficient contact between wastewater and granular sludge due to rapid upward flow, which could lead to reduced treatment efficiency. Furthermore, the rotation of the power fan and central roller is driven by the wastewater jet, reducing the required energy input. The wastewater discharge pipe's structure sprays wastewater to both sides, and the wastewater passes over the surfaces of adjacent pipes. Because the vertical cross-section of the discharge pipe is triangular, the wastewater ultimately moves upwards. However, the wastewater sprayed to both sides effectively carries away sludge and particles deposited at the bottom of the reaction tank, greatly reducing the problem of increasing sediment buildup at the bottom, which could lead to a decline in reaction and treatment efficiency.

[0009] Preferably, the baffle is inclined, the power fan is arc-shaped, and a recovery pipe is installed inside the reaction tank. The top of the recovery pipe is connected to the exhaust valve, and the bottom of the recovery pipe is connected to the bottom of the baffle. The inclined baffle not only assists the circulation space formed by the rotation of the power fan below, ensuring that the water flow in the circulation space is not blocked by the shape of the baffle, but also allows the granular sludge above to slide down smoothly under the action of gravity. At the highest point below the arc-shaped baffle, some of the biogas produced by the reaction of granular sludge and sewage will be concentrated here, and it will be recovered through the recovery pipe and discharged through the exhaust valve.

[0010] Preferably, both ends of the central roller penetrate the reaction tank, one end of the central roller is open, the interior of the central roller is hollow, and multiple discharge valves are installed on the outside of the central roller, located between adjacent power fans. A disadvantage of upflow reactors is that granular sludge is difficult to cultivate, and the cultivation time is too long, resulting in excessively long initial preparation time. Adding already cultivated granular sludge using an additive method can significantly reduce preparation time. However, traditional equipment struggles to accurately deliver granular sludge to the processing area inside the equipment. By using discharge valves, the granular sludge to be added is connected to the open end of the central roller on the outside. Opening the discharge valves allows the granular sludge mixed with wastewater to be injected into the central roller. As the central roller slowly rotates, the granular sludge inside is gradually discharged to the processing area outside the central roller, thus ensuring that the externally cultivated granular sludge is evenly distributed into the processing area inside the reaction tank.

[0011] Preferably, a filling valve is rotatably connected to the open end of the central roller, and the filling valve is fixedly connected to the outside of the reaction tank. An aeration valve is rotatably connected to the other end of the central roller. Multiple aeration nozzles communicating with the aeration valve are fixedly connected to the outer surface of the power fan. The rotatably connected filling valve is fixedly connected to the reaction tank, so that the filling valve remains stationary when the central roller rotates, facilitating the connection of external pipelines. When aerobic particle treatment is required, the aeration valve can be connected to a pipeline to spray the required oxygen from the power fan through the aeration nozzles. This not only assists the rotation of the power fan but also provides the required oxygen to the aerobic granular sludge.

[0012] Preferably, a protective box is provided on the outside of the aeration valve, and a drive motor is installed on the inside of the protective box. The output end of the drive motor is connected to the outside of the central roller via a belt. When the drive motor rotates, it drives the belt and the central roller to rotate. When the central roller rotates, the rotation speed is also transmitted to the drive motor via the belt. The drive motor can detect the rotation speed of the central roller. When the speed does not reach the predetermined speed, the drive motor provides part of the power to the central roller. When the speed is too fast, the drive motor runs slowly to resist the rotation of the central roller through friction, thus ensuring the uniform rotation of the central roller.

[0013] Preferably, the multiple side nozzles are arranged at an angle, with the spray direction of the side nozzles facing the concave direction of the power fan and the spray direction of the aeration nozzles facing the convex direction of the power fan. The water flow sprayed upward by the side nozzles can effectively act on the power fan, thereby driving the central roller to rotate. At the same time, the spray from the aeration nozzles will also assist the central roller in rotating.

[0014] Preferably, a discharge pipe is provided in the middle of the reaction vessel. The discharge pipe is bent, with one end located inside the reaction vessel and the other end located outside the reaction vessel. The discharge pipe is rotatably connected to the reaction vessel. An operating handle is fixed to the part of the discharge pipe located outside the reaction vessel. When the granular sludge inside the reaction vessel gradually increases in size and quantity, it needs to be discharged periodically. The granules are discharged outward by opening the discharge pipe. The orientation of the end of the discharge pipe can be adjusted by the operating handle, thus controlling the height of the discharged granules.

[0015] Preferably, the separator includes a separation frame composed of multiple inverted trapezoidal frames, with the bottom of the inverted trapezoids being open. Two sides of the separation frame are fixed to the inner wall of the reaction tank, and guide plates are fixed to the other two sides. When the upward-moving wastewater contacts the separation frame, because the bottom of the separation frame is inverted trapezoidal and the opening is at the very bottom of the trapezoid, a large amount of wastewater, particles, and biogas will concentrate between two trapezoids. Then, it will transfer upwards from the side of the separation frame. During this transfer, because the particles have significantly reduced lift after contacting the bottom of the separation frame, the particles will either remain or fall, while only the wastewater will move upwards normally, achieving the first... The separation process is as follows: The guide plate is inclined. Biogas and wastewater will move upward normally after passing the guide plate, while particles, under the influence of gravity and turbulence, will move towards the upper center of the separation frame. The outlet valve is located in the upper middle of the separation frame, and water will be discharged outward from the outlet valve. Larger particles will be discharged outward from the bottom outlet of the trapezoid under the influence of gravity. The turbulence is caused by the upward inclination of the guide plate. When the water flows from bottom to top, the particles in the water flow are relatively large, so they will bend back after passing the guide plate, thus guiding the particles into the separation frame at this point, achieving a second separation function.

[0016] Preferably, a separation screen plate is provided above the separation frame. The separation screen plate is composed of multiple inclined metal plates, which are fixedly connected by straight rods. The two ends of the straight rods are fixedly connected to the reaction tank. With the separation screen plate, when the wastewater carrying particles passes above the separation frame, the particles will come into contact with the inclined metal plates, reducing the impact of the water flow on the particles, allowing the particles to slide down the metal plates and finally fall from the bottom of the separation frame, thereby achieving the fourth separation.

[0017] Preferably, a water outlet frame is provided above the separating screen plate, and multiple protrusions are fixed to the outer edge of the water outlet frame. Both ends of the water outlet frame are fixed to water outlet valves. A partition is provided above the separator, and a hole is opened in the middle of the partition. The upward-moving sewage will pass through both sides of the water outlet frame. The protrusions on the edge of the water outlet frame can effectively block particles in the sewage. After treatment, the sewage is discharged from the water outlet valves at both ends of the water outlet frame. The hole in the middle of the upper partition allows biogas to concentrate and move upward.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. The continuous flow granular sludge wastewater treatment reactor of the present invention, through the arrangement of the central roller and the power fan, ensures full contact between the granular sludge and the wastewater, effectively improving the wastewater treatment effect and greatly reducing the problem of insufficient contact between the wastewater and the granular sludge due to the rapid upward rise of the wastewater, which leads to a decrease in treatment effect. At the same time, the rotation of the power fan and the central roller is driven by the wastewater jet, reducing the required energy input. In addition, the structure of the sewage pipe allows the sewage pipe to spray wastewater to both sides, and the wastewater will pass over the surface of the adjacent sewage pipe. Since the vertical cross-section of the sewage pipe is triangular, the wastewater will eventually move upward. However, the wastewater sprayed to both sides can effectively carry away the sludge and particles deposited at the bottom of the reaction tank, greatly reducing the problem of increasing bottom sedimentation leading to a decrease in reaction and treatment effect.

[0020] 2. The reactor for continuous flow granular sludge wastewater treatment described in this invention features an inclined baffle that not only assists the circulation space formed by the rotation of the power fan below, ensuring that the water flow in the circulation space is not obstructed by the shape of the baffle, but also allows the granular sludge above to slide smoothly down under the action of gravity. At the highest point below the arc-shaped baffle, some of the biogas generated by the reaction between the granular sludge and wastewater will be concentrated here, and will be recovered through a recovery pipe and discharged through an exhaust valve. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a first-view perspective perspective view of the present invention;

[0023] Figure 2 This is the second perspective front view of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the reaction vessel of the present invention;

[0025] Figure 4 This is a cross-sectional view of the reaction vessel of the present invention;

[0026] Figure 5This is a perspective view of the separator and center roller of the present invention;

[0027] Figure 6 This is a perspective view of the separation frame of the present invention;

[0028] Figure 7 This is a perspective view of the sewage pipe of the present invention;

[0029] Figure 8 This is a schematic diagram of the liquid flow inside the reaction vessel of the present invention;

[0030] In the diagram: 1. Reaction tank; 2. Filling valve; 3. Exhaust valve; 4. Recovery pipe; 5. Water outlet valve; 6. Protection box; 7. Aeration valve; 8. Operating handle; 9. Sewage pump; 10. Transfer pipe; 11. Baffle; 12. Separator; 13. Drive motor; 14. Sewage pipe; 15. Belt; 16. Power fan; 17. Center roller; 18. Aeration nozzle; 19. Discharge pipe; 20. Baffle; 21. Separation screen plate; 22. Guide plate; 23. Separation frame; 24. Side nozzle; 25. Discharge valve; 26. Water outlet frame. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] like Figures 1 to 8 As shown in the embodiment of the present invention, a reactor for continuous flow granular sludge wastewater treatment includes a reaction tank 1. Multiple drain pipes 14 are installed at the bottom inner side of the reaction tank 1. A central roller 17 is rotatably connected to the middle of the reaction tank 1. Multiple power fans 16 are fixedly connected to the outer side of the central roller 17. A baffle 11 is fixedly connected inside the reaction tank 1, located above the central roller 17. A separator 12 is installed near the top inner side of the reaction tank 1. The top of the reaction tank 1... An exhaust valve 3 is installed, and a water outlet valve 5 is installed on the outside of the reaction tank 1 near the top. Multiple sewage pipes 14 are arranged at equal intervals, and side nozzles 24 are installed between adjacent sewage pipes 14. The vertical cross-section of the sewage pipe 14 is an isosceles triangle. The sewage outlets of the sewage pipes 14 are opened on both sides, and the sewage outlets of adjacent sewage pipes 14 are staggered. A sewage pump 9 is installed on the outside of the reaction tank 1. The sewage pump 9 is connected to the sewage pipes 14 and the side nozzles 24 through a transfer pipe 10.

[0033] Through the arrangement of the reaction tank 1 and the central roller 17, the wastewater to be treated is connected to the wastewater pump 9. The wastewater pump 9 sends the wastewater into the bottom of the reaction tank 1 through the transfer pipe 10 and the discharge pipe 14. At the same time, the wastewater pump 9 also sprays some wastewater upward through the side nozzles 24. The water flow sprayed from the side nozzles 24 acts on the power fan 16, causing the central roller 17 to rotate slowly. As the central roller 17 and the power fan 16 rotate, the granular sludge and wastewater inside the reaction tank 1 will rotate clockwise. Under the action of inertia, the larger granular sludge particles will move to the edge of the power fan 16, while the smaller granular sludge particles will remain between the power fan 16. Since the baffle 11 is located above the central roller 17 to block the flow, and there is always rising sludge water at the bottom, the wastewater is blocked. This design prevents the granular sludge from easily escaping the treatment space, creating a clockwise circulating water flow area in the middle of reactor 1. Wastewater undergoes at least half a cycle of circulation from bottom to top, and most of the wastewater is unable to escape the circulation space after the first cycle. Through multiple cycles, the wastewater can have sufficient contact with the granular sludge in the circulating water flow area, thus improving the wastewater treatment effect. Compared to traditional methods that simply allow wastewater to rise normally through a space of suspended, unevenly distributed particles, this method effectively improves the wastewater treatment effect. Furthermore, as wastewater is continuously injected from the bottom, the water flow escapes the circulation area, passing through the gap between baffle 11 and reactor 1. The granular sludge floating on the outside is mostly large-mass granular sludge. After passing through baffle 11, without significant lift, the large-mass granular sludge falls to the edge of baffle 11 under the influence of gravity. Since the edge of baffle 11 is also the only outlet for the rising water flow, the granular sludge cannot settle quickly there, causing it to accumulate and further treat the rising wastewater, thus ensuring the effectiveness of wastewater treatment. After treating the wastewater, the granular sludge produces biogas, which rises to the top of reaction tank 1 and is eventually discharged through exhaust valve 3. The treated wastewater, as it moves upwards, is processed by separator 12 to remove the granular sludge. Finally, the treated wastewater is discharged through outlet valve 5. This design ensures the efficient handling of the granular sludge. Sufficient contact with wastewater effectively improves the wastewater treatment effect, greatly reducing the problem of insufficient contact between wastewater and granular sludge due to rapid upward flow of wastewater, which leads to reduced treatment efficiency. At the same time, the rotation of the power fan 16 and the central roller 17 is driven by the wastewater jet, reducing the required energy input. In addition, the structure of the sewage pipe 14 allows it to spray wastewater to both sides. The wastewater will pass over the surface of the adjacent sewage pipes 14. Since the vertical cross-section of the sewage pipe 14 is triangular, the wastewater will eventually move upward. However, the wastewater sprayed to both sides can effectively carry away the sludge and particles deposited at the bottom of the reaction tank 1, greatly reducing the problem of increasing bottom sedimentation leading to a decline in reaction and treatment efficiency.

[0034] The baffle 11 is inclined, the power fan 16 is arc-shaped, and a recovery pipe 4 is installed inside the reaction tank 1. The top of the recovery pipe 4 is connected to the exhaust valve 3, and the bottom of the recovery pipe 4 is connected to the bottom of the baffle 11.

[0035] During operation, the inclined baffle 11 not only assists the circulation space formed by the rotation of the power fan 16 below, ensuring that the water flow in the circulation space is not blocked by the shape of the baffle 11, but also allows the granular sludge above to slide down smoothly under the action of gravity. At the highest point below the curved baffle 11, some of the biogas produced by the reaction between the granular sludge and sewage will be concentrated here, and will be recovered through the recovery pipe 4 and discharged through the exhaust valve 3.

[0036] Both ends of the central roller 17 penetrate the reaction tank 1. One end of the central roller 17 is open. The interior of the central roller 17 is hollow. Multiple discharge valves 25 are installed on the outside of the central roller 17. The multiple discharge valves 25 are located between adjacent power fans 16.

[0037] During operation, the disadvantage of the upflow reactor is that the granular sludge is difficult to cultivate and the cultivation time is too long, resulting in an excessively long initial preparation time. If the cultivated granular sludge is added to the inside using the additive method, the preparation time can be greatly reduced. However, traditional equipment is difficult to accurately add granular sludge to the treatment area inside the equipment. By setting the discharge valve 25, the pipeline of the granular sludge to be added is connected to the open end of the center roller 17 on the outside. When the discharge valve 25 is opened, the granular sludge mixed with sewage is injected into the inside of the center roller 17. As the center roller 17 rotates slowly, the granular sludge inside will be gradually discharged to the treatment area outside the center roller 17. In this way, the cultivated granular sludge can be more evenly added to the treatment area inside the reaction tank 1.

[0038] The opening end of the central roller 17 is rotatably connected to a filling valve 2, which is fixedly connected to the outside of the reaction tank 1. The other end of the central roller 17 is rotatably connected to an aeration valve 7, and the outer surface of the power fan 16 is fixedly connected to a plurality of aeration nozzles 18 that communicate with the aeration valve 7.

[0039] During operation, the rotary filling valve 2 is fixedly connected to the reaction tank 1, so that the filling valve 2 remains stationary while the central roller 17 rotates, facilitating the connection of external pipelines. When aerobic particle treatment is required, the aeration valve 7 can be connected to the pipeline to spray the required oxygen from the power fan 16 through the aeration nozzle 18. This not only assists the rotation of the power fan 16 but also provides the required oxygen to the aerobic granular sludge.

[0040] A protective box 6 is provided on the outside of the aeration valve 7, and a drive motor 13 is installed on the inside of the protective box 6. The output end of the drive motor 13 is connected to the outside of the center roller 17 by a belt 15.

[0041] During operation, the drive motor 13 rotates, which in turn drives the belt 15 and the center roller 17 to rotate. When the center roller 17 rotates, its rotational speed is also transmitted to the drive motor 13 through the belt 15. The drive motor 13 can detect the rotational speed of the center roller 17. When the speed is below the predetermined speed, the drive motor 13 provides some power to the center roller 17. When the speed is too fast, the drive motor 13 runs slowly, using friction to resist the rotation of the center roller 17 and ensure that the center roller 17 rotates at a uniform speed.

[0042] The multiple side nozzles 24 are arranged at an angle, and the spray direction of the side nozzles 24 is toward the concave direction of the power fan 16, while the spray direction of the aeration nozzles 18 is toward the convex direction of the power fan 16.

[0043] During operation, the water jets sprayed upwards from the side nozzles 24 can effectively act on the power fan 16, thereby driving the central roller 17 to rotate. At the same time, the spray from the aeration nozzles 18 also assists in the rotation of the central roller 17.

[0044] A discharge pipe 19 is provided in the middle of the reaction vessel 1. The discharge pipe 19 is bent. One end of the discharge pipe 19 is located inside the reaction vessel 1, and the other end of the discharge pipe 19 is located outside the reaction vessel 1. The discharge pipe 19 is rotatably connected to the reaction vessel 1. An operating handle 8 is fixedly connected to the part of the discharge pipe 19 located outside the reaction vessel 1.

[0045] During operation, as the granular sludge inside the reaction tank 1 gradually increases in size and quantity, it needs to be discharged periodically. The granules inside are discharged outward by opening the discharge pipe 19. The orientation of the end of the discharge pipe 19 can be adjusted by the operating handle 8, thus controlling the height of the discharged granules.

[0046] The separator 12 includes a separation frame 23, which is composed of multiple inverted trapezoidal frames, and the bottom of the inverted trapezoids is open. Two sides of the separation frame 23 are fixed to the inner wall of the reaction vessel 1, and guide plates 22 are fixed to the other two sides of the separation frame 23.

[0047] During operation, the upward-moving wastewater contacts the separation frame 23. Because the bottom of the separation frame 23 is an inverted trapezoid, and the opening of the separation frame 23 is at the very bottom of this trapezoid, a large amount of wastewater, particles, and biogas will concentrate between the two trapezoids. Then, it will transfer upwards from the side of the separation frame 23. During this transfer, because the particles' lift is greatly reduced after contacting the bottom of the separation frame 23, the particles will either remain or fall, while only the wastewater will move upwards normally, achieving the first step of separation. The guide plate 22 is inclined; the biogas and wastewater passing through the guide plate 22 will move upwards normally, while the particles... When passing through the guide plate 22, under the action of gravity and turbulence, the particles and some sewage move towards the upper middle of the separation frame 23. The outlet valve 5 is located above the middle of the separation frame 23, and the water will be discharged outward from the outlet valve 5. Large particles will be discharged outward from the bottom outlet of the trapezoid under the action of gravity. The reason for the turbulence is that the guide plate 22 is inclined upward. When the water flows from bottom to top, because there are particles in the water flow, the particles are large in mass. Therefore, after passing through the guide plate 22, the particles will be deflected and guided into the separation frame 23, realizing the second separation function.

[0048] A separation sieve plate 21 is provided above the separation frame 23. The separation sieve plate 21 is composed of multiple inclined metal plates, which are fixedly connected by straight rods. The two ends of the straight rods are fixedly connected to the reaction vessel 1.

[0049] During operation, the separation screen 21 is set up so that when the wastewater carrying particles passes above the separation frame 23, the particles will come into contact with the inclined metal plate, reducing the impact of the water flow on the particles, allowing the particles to slide down the metal plate and finally fall from the bottom of the separation frame 23, thus achieving the fourth separation.

[0050] A water outlet frame 26 is provided above the separating screen plate 21. Multiple protrusions are fixed to the outer edge of the water outlet frame 26. Both ends of the water outlet frame 26 are fixed to the water outlet valve 5. A partition plate 20 is provided above the separator 12. A hole is opened in the middle of the partition plate 20.

[0051] During operation, the upward-moving sewage passes through both sides of the outlet frame 26. The protrusions on the edge of the outlet frame 26 can effectively block particles in the sewage. After treatment, the sewage is discharged from the outlet valves 5 at both ends of the outlet frame 26. The holes in the middle of the upper partition 20 allow biogas to concentrate and move upward.

[0052] During operation, the wastewater to be treated is connected to the wastewater pump 9 via the setup of the reaction tank 1 and the central roller 17. The wastewater pump 9 sends the wastewater into the bottom of the reaction tank 1 through the transfer pipe 10 and the discharge pipe 14. At the same time, the wastewater pump 9 also sprays some wastewater upwards through the side nozzles 24. The water flow from the side nozzles 24 acts on the power fan 16, causing the central roller 17 to rotate slowly. As the central roller 17 and the power fan 16 rotate, the granular sludge and wastewater inside the reaction tank 1 rotate clockwise. Under the action of inertia, the larger granular sludge particles move to the edge of the power fan 16, while the smaller granular sludge particles remain between the power fan 16. Since the baffle 11 is located above the central roller 17 and there is a continuous upward movement from the bottom... The sludge-water mixture prevents the granular sludge from easily escaping the treatment space, creating a clockwise circulating water flow area in the middle of reactor 1. The wastewater undergoes at least half a cycle of circulation from bottom to top, and most of the wastewater is unable to escape the circulation space after the first cycle. Through multiple cycles, the wastewater can make sufficient contact with the granular sludge in the circulating water flow area, thereby improving the wastewater treatment effect. As wastewater is continuously injected from the bottom, the water flow escapes the circulation area, passing through the gap between baffle 11 and reactor 1. Because the top surface of baffle 11 is arc-shaped, and the granular sludge floating on the outer side is mostly large-mass granular sludge, after passing through baffle 11, due to the lack of significant lift, it is subject to gravity. Under the action of the separator 12, large-mass granular sludge will fall to the edge of the baffle 11. Since the edge of the baffle 11 is also the only outlet for the rising water flow, the granular sludge at this location cannot settle quickly, thus accumulating and further treating the rising wastewater, ensuring the effectiveness of wastewater treatment. After treating the wastewater, the granular sludge will produce biogas, which will rise to the top of the reaction tank 1 and eventually be discharged through the exhaust valve 3. The treated wastewater, as it moves upwards, will be processed by the separator 12 to remove the granular sludge. Finally, the treated water will be discharged through the outlet valve 5. This design ensures sufficient mixing of granular sludge and wastewater. The separate contact effectively improves the treatment effect of sewage, greatly reducing the problem of sewage rising rapidly from bottom to top and not making sufficient contact with granular sludge, which leads to a decrease in treatment effect. At the same time, the rotation of the power fan 16 and the central roller 17 is driven by the sewage jet, reducing the required energy input. In addition, the structure of the sewage pipe 14 allows sewage to be sprayed to both sides. The sewage will pass over the surface of the adjacent sewage pipe 14. Since the vertical cross section of the sewage pipe 14 is triangular, the sewage will eventually move upward. However, the sewage sprayed to both sides can effectively carry away the sludge and particles deposited at the bottom of the reaction tank 1, greatly reducing the problem of increasing bottom deposits leading to a decrease in reaction and treatment effect.

[0053] The inclined baffle 11 not only assists the circulation space formed by the rotation of the power fan 16 below, so that the water flow in the circulation space is not blocked by the shape of the baffle 11, but also allows the granular sludge above to slide down smoothly under the action of gravity. At the highest point below the arc-shaped baffle 11, some of the biogas produced by the reaction between the granular sludge and sewage will be concentrated here, and it will be recovered through the recovery pipe 4 and discharged through the exhaust valve 3.

[0054] The disadvantage of upflow reactors is that the granular sludge is difficult to cultivate and the cultivation time is too long, resulting in an excessively long initial preparation time. If the cultivated granular sludge is added to the inside using the addition method, the preparation time can be greatly reduced. However, traditional equipment is difficult to accurately deliver the granular sludge to the processing area inside the equipment. By setting the discharge valve 25, the pipeline of the granular sludge to be added is connected to the open end of the center roller 17 on the outside. When the discharge valve 25 is opened, the granular sludge mixed with sewage is injected into the inside of the center roller 17. As the center roller 17 rotates slowly, the granular sludge inside will be gradually discharged to the processing area outside the center roller 17. In this way, the cultivated granular sludge can be delivered to the processing area inside the reaction tank 1 more evenly.

[0055] The rotatable filling valve 2 is fixed to the reaction tank 1, so that the filling valve 2 remains stationary when the central roller 17 rotates, which facilitates the connection of external pipelines. When aerobic granule treatment is required, the aeration valve 7 can be connected to the pipeline to spray the required oxygen from the power fan 16 through the aeration nozzle 18. This not only assists the rotation of the power fan 16, but also provides the required oxygen to the aerobic granular sludge.

[0056] The rotation of the drive motor 13 drives the belt 15 and the center roller 17 to rotate. When the center roller 17 rotates, the rotation speed is also transmitted to the drive motor 13 through the belt 15. The drive motor 13 can detect the rotation speed of the center roller 17. When the speed does not reach the predetermined speed, the drive motor 13 provides some power to the center roller 17. When the speed is too fast, the drive motor 13 runs slowly and resists the rotation of the center roller 17 through friction to ensure that the center roller 17 rotates at a uniform speed.

[0057] The water jets sprayed upwards from the side nozzles 24 can effectively act on the power fan 16, thereby driving the central roller 17 to rotate. At the same time, the spray from the aeration nozzles 18 will also assist the central roller 17 in rotating.

[0058] As the granular sludge inside the reaction tank 1 gradually increases in size and quantity, it needs to be discharged periodically. The granules inside are discharged outward by opening the discharge pipe 19. The orientation of the end of the discharge pipe 19 can be adjusted by the operating handle 8, thus controlling the height of the discharged granules.

[0059] The upward-moving wastewater contacts the separation frame 23. Since the bottom of the separation frame 23 is an inverted trapezoid, and the opening of the separation frame 23 is at the very bottom of the inverted trapezoid, a large amount of wastewater, particles, and biogas will concentrate between the two trapezoids. Then, it will transfer upwards from the side of the separation frame 23. During this transfer, because the lift effect is greatly reduced after the particles contact the bottom of the separation frame 23, the particles will either remain or fall, while only the wastewater will move upwards normally, achieving the first step of separation. The guide plate 22 is inclined; biogas and wastewater passing through the guide plate 22 will move upwards normally, while particles... When the guide plate 22 is in operation, under the influence of gravity and turbulence, particles and some sewage will move towards the upper middle of the separation frame 23. The outlet valve 5 is located above the middle of the separation frame 23, and water will be discharged outward from the outlet valve 5. Large particles will be discharged outward from the bottom outlet of the trapezoid under the influence of gravity. The reason for the turbulence is that the guide plate 22 is inclined upward. When the water flows from bottom to top, because there are particles in the water flow and the particles are large, they will bend back after passing the guide plate 22, so that the particles are guided into the separation frame 23 at this point, realizing the second separation function.

[0060] With the separation screen plate 21 in place, when the wastewater carrying particles passes above the separation frame 23, the particles will come into contact with the inclined metal plate, reducing the impact of the water flow on the particles, allowing the particles to slide down the metal plate and finally fall from the bottom of the separation frame 23, thus achieving the fourth separation.

[0061] The upward-moving sewage will pass through both sides of the outlet frame 26. The protrusions on the edge of the outlet frame 26 can effectively block particles in the sewage. After treatment, the sewage will be discharged from the outlet valves 5 at both ends of the outlet frame 26. The holes in the middle of the upper partition 20 allow biogas to concentrate and move upward.

[0062] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reactor for continuous flow granular sludge wastewater treatment, characterized in that: The reaction vessel includes a reaction tank (1), with multiple drain pipes (14) installed on the bottom inner side of the reaction tank (1). A central roller (17) is rotatably connected to the middle of the reaction tank (1), and multiple power fans (16) are fixed to the outer side of the central roller (17). A baffle (11) is fixed inside the reaction tank (1), and the baffle (11) is located above the central roller (17). A separator (12) is installed on the top inner side of the reaction tank (1). An exhaust valve (3) is installed on the top of the reaction tank (1). 1) A water outlet valve (5) is installed on the outside near the top. Multiple sewage pipes (14) are arranged at equal intervals. Side nozzles (24) are installed between adjacent sewage pipes (14). The vertical cross section of the sewage pipe (14) is set in an isosceles triangle. The sewage outlets of the sewage pipes (14) are opened on both sides, and the sewage outlets of adjacent sewage pipes (14) are staggered. A sewage pump (9) is installed on the outside of the reaction tank (1). The sewage pump (9) is connected to the sewage pipes (14) and the side nozzles (24) through a transfer pipe (10). The separator (12) includes a separation frame (23), which is composed of multiple inverted trapezoidal frames, and the bottom of the inverted trapezoids is open. Two sides of the separation frame (23) are fixed to the inner wall of the reaction vessel (1), and guide plates (22) are fixed to the other two sides of the separation frame (23). A separation sieve plate (21) is provided above the separation frame (23). The separation sieve plate (21) is composed of multiple inclined metal plates. The multiple metal plates are fixedly connected to each other by straight rods. The two ends of the straight rods are fixedly connected to the reaction vessel (1). A water outlet frame (26) is provided above the separating screen plate (21). Multiple protrusions are fixed to the outer edge of the water outlet frame (26). Both ends of the water outlet frame (26) are fixed to the water outlet valve (5). A partition plate (20) is provided above the separator (12). A hole is opened in the middle of the partition plate (20).

2. The reactor for continuous flow granular sludge wastewater treatment according to claim 1, characterized in that: The baffle (11) is inclined, the power fan (16) is arc-shaped, and a recovery pipe (4) is installed inside the reaction tank (1). The top of the recovery pipe (4) is connected to the exhaust valve (3), and the bottom of the recovery pipe (4) is connected to the bottom of the baffle (11).

3. The reactor for continuous flow granular sludge wastewater treatment according to claim 2, characterized in that: Both ends of the central roller (17) penetrate the reaction tank (1). One end of the central roller (17) is open. The interior of the central roller (17) is hollow. Multiple discharge valves (25) are installed on the outside of the central roller (17). The multiple discharge valves (25) are located between adjacent power fans (16).

4. The reactor for continuous flow granular sludge wastewater treatment according to claim 3, characterized in that: The opening end of the central roller (17) is rotatably connected to a filling valve (2), which is fixedly connected to the outside of the reaction tank (1). The other end of the central roller (17) is rotatably connected to an aeration valve (7), and the outer surface of the power fan (16) is fixedly connected to multiple aeration nozzles (18) that communicate with the aeration valve (7).

5. The reactor for continuous flow granular sludge wastewater treatment according to claim 4, characterized in that: A protective box (6) is provided on the outside of the aeration valve (7), and a drive motor (13) is installed on the inside of the protective box (6). The output end of the drive motor (13) is connected to the outside of the center roller (17) by a belt (15).

6. The reactor for continuous flow granular sludge wastewater treatment according to claim 5, characterized in that: The multiple side nozzles (24) are arranged at an angle, with the spray direction of the side nozzles (24) facing the concave direction of the power fan (16) and the spray direction of the aeration nozzles (18) facing the convex direction of the power fan (16).

7. The reactor for continuous flow granular sludge wastewater treatment according to claim 6, characterized in that: A discharge pipe (19) is provided in the middle of the reaction vessel (1). The discharge pipe (19) is bent. One end of the discharge pipe (19) is located inside the reaction vessel (1), and the other end of the discharge pipe (19) is located outside the reaction vessel (1). The discharge pipe (19) is rotatably connected to the reaction vessel (1). An operating handle (8) is fixedly connected to the part of the discharge pipe (19) located outside the reaction vessel (1).

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