A flocculent sludge granulation selection device and method

Abstract

This invention relates to the field of wastewater treatment, and more particularly to a device and method for selecting and granulating flocculent sludge. It includes a treatment tank, a mounting frame, a flow guide sleeve assembly, a vortex sleeve assembly, and an air jet flow adjustment assembly. The mounting frame is located inside the treatment tank; the flow guide sleeve assembly is located on the mounting frame and rotates in multiple directions, with an internal pushing structure; two sets of vortex sleeve assemblies are respectively located at both ends of the flow guide sleeve assembly, forming a flow guide channel structure. The vortex sleeve assembly has an internal vortex structure and an external magnetic vortex structure; the two sets of air jet flow adjustment assemblies are respectively located on the outer periphery of the two sets of flow guide sleeve assemblies, corresponding one-to-one with the positions of the sludge discharge pipe and the water discharge pipe. This invention, through the synergy of flow field control, magnetic field enhancement, and shear force optimization, significantly shortens the sludge granulation cycle, improves treatment efficiency and particle stability, and reduces hydraulic retention time, providing technical support for sludge reduction and resource utilization in wastewater treatment.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment, and more particularly to a device and method for selecting flocculent sludge granules. Background Technology

[0002] In traditional activated sludge processes, sludge typically exists in flocculent form. Its loose structure easily leads to poor settling performance and sludge loss, increasing subsequent treatment costs. Granular sludge, with its higher biomass concentration, stronger shock resistance, and superior settling performance, has become a core objective of high-efficiency wastewater treatment systems. Granulating flocculent sludge, by optimizing microbial aggregation conditions, can significantly shorten the particle formation cycle and improve system treatment efficiency.

[0003] Patent CN111747520B discloses a device and method for promoting aerobic sludge granulation using magnetic materials combined with a moving magnetic field. The device has a reasonable structural design, and the method includes: setting up an activated sludge system reactor, configured according to influent, aeration, sedimentation, effluent, and idle stages; adding magnetic materials to the sludge system of the reactor during the influent stage; adjusting the pH value to acidic within 30 minutes at the end of each aeration stage; and using a stepper motor to automatically move a magnet downwards 30 seconds before the end of each aeration stage to generate a moving magnetic field, causing the magnetic materials and the sludge attached to them to sink rapidly. The SBR achieves complete granulation after 15-30 days of operation, and the aerobic granular sludge can maintain structural stability even after long-term operation.

[0004] The aforementioned sludge granulation device promotes sludge granulation through a magnetic field. The magnetic material moves up and down with the rise and fall of the magnet block, promoting granulation through this up-and-down movement. However, the overall movement trajectory of the sludge is fixed, the granulation method is singular, and the range of the magnetic field is small, resulting in limited wastewater treatment efficiency and sludge particle stability. Summary of the Invention

[0005] To address the problems existing in the background technology, this invention proposes a flocculent sludge granulation selection device and method. Through the synergistic effect of flow field control, magnetic field enhancement, and shear force optimization, this invention significantly shortens the sludge granulation cycle, improves treatment efficiency and particle stability, and reduces hydraulic retention time, providing technical support for sludge reduction and resource utilization in wastewater treatment.

[0006] This invention proposes a granulation selection device for flocculent sludge, comprising a treatment tank, a mounting frame, a flow guide sleeve assembly, a vortex sleeve assembly, and an air jet flow adjustment assembly. The treatment tank has an inlet pipe and a sludge outlet pipe at its upper end, and a sludge outlet pipe and a water outlet pipe at its lower end. The mounting frame is located inside the treatment tank. The flow guide sleeve assembly is located on the mounting frame and is driven to rotate in multiple directions by the mounting frame. It contains multiple sets of pushing structures that drive the sludge-containing water flow in one direction. Two sets of vortex sleeve assemblies are respectively located at both ends of the flow guide sleeve assembly, forming a flow channel structure. The vortex sleeve assembly contains a vortex structure that cooperates with the pushing structure and drives the water flow to rotate, and an external magnetic vortex structure with a magnetic field is provided. Two sets of air jet flow adjustment assemblies are respectively located at... The outer periphery of the two sets of flow guide sleeve components corresponds one-to-one with the positions of the sludge discharge pipe and the water discharge pipe. On the one hand, at the outlet of the vortex, air jets promote the sludge to gather toward the magnetic vortex structure. On the other hand, an isolation air wall is formed during drainage and sludge discharge. After the sludge-containing wastewater is mixed with magnetic raw materials, it circulates internally and externally along the flow guide channel in a clockwise or counterclockwise direction through the cooperation of the flow guide sleeve components and the vortex sleeve components at both ends. During the circulation flow, vortices are formed at the vortex sleeve components and the air jet flow adjustment components. The circulation flow combined with the vortex generates multiple shear forces to promote the granulation of flocculent sludge.

[0007] Preferably, the mounting bracket includes a mounting ring disposed along the inner wall of the treatment tank; a rotating ring is rotatably disposed on the inner wall of the mounting ring; and a flow guide sleeve assembly is disposed within the rotating ring.

[0008] Preferably, the guide sleeve assembly includes a bidirectional drive base; the bidirectional drive base is hollow and open, with an installation sleeve inside, and rotating shafts on the left and right sides, which are rotatably connected to the inner wall of the rotating ring through the rotating shafts. Rotatable rotating sleeves are respectively connected to the upper and lower drive ends; the installation sleeve rotates through the rotating sleeve and extends out of the two ends of the bidirectional drive base, and is respectively connected to the extension sleeve; a telescopic sleeve is slidably connected to the extension sleeve, and the telescopic sleeve is rotatably connected to the vortex sleeve assembly, with a telescopic rotation drive component on its outer periphery; the telescopic rotation drive component is set on the rotating sleeve, driving the vortex sleeve assembly to rotate and rise and fall; the pushing structure includes a jet propulsion component located in the installation sleeve and a rotation propulsion component located in the extension sleeve.

[0009] Preferably, the jet propulsion component is arranged in a ring along the inner wall of the mounting sleeve, including a rotating seat rotatably mounted on the mounting sleeve, a rotating frame rotatably mounted on the rotating seat, and a nozzle mounted on the rotating frame and connected to an external air source.

[0010] Preferably, the rotating pusher is configured as a water flow propeller; the upward and downward water flow propellers push the water flow in the same direction as the nozzle's action direction.

[0011] Preferably, the vortex sleeve assembly includes a sleeve body rotatably connected to the end of the telescopic sleeve and simultaneously connected to the telescopic rotation drive; the vortex structure is disposed inside the sleeve body; and the magnetic vortex structure is disposed outside the sleeve body.

[0012] Preferably, the swirling structure is configured as a spiral groove opened along the inner wall of the casing; when the sludge-containing water flows through the casing, it forms an inner swirling flow under the push of the spiral groove.

[0013] Preferably, the magnetic swirling structure includes a fixed frame fitted onto the outer wall of the casing; a rotating adjusting frame is provided on the fixed frame; and a magnetic piece is provided on the adjusting frame.

[0014] Preferably, the jet flow adjustment assembly includes a positioning block disposed along the inner wall of the treatment tank; an annular jet flow adjustment pipe is fixed by the positioning block and is provided with a nozzle two that is connected to an external air source and sprays air towards the center; the upper jet flow adjustment pipe is located below the slag outlet pipe; and the lower jet flow adjustment pipe is located below the water outlet pipe.

[0015] This invention further proposes a method for selecting flocculent sludge granules, using the aforementioned flocculent sludge granulation device, with the following steps:

[0016] S1. Wastewater mixed with magnetic raw materials enters the treatment tank from the inlet pipe until the water level is higher than the slag outlet pipe;

[0017] S2. The rotating ring rotates along the mounting ring, and the rotating shaft drives the bidirectional drive seat to rotate alternately. The flow channel structure rotates in multiple directions, and the angle adjustment begins.

[0018] S3. The rotating sleeve rotates on the outer periphery of the mounting sleeve and the extension sleeve. The telescopic rotation drive drives the vortex sleeve assembly to rotate and rise and fall. The telescopic sleeve slides synchronously along the extension sleeve, and the length of the guide channel structure begins to adjust.

[0019] S4. The nozzle adjusts the direction of the air jet by rotating the rotating seat and rotating frame; the water flow propulsion paddle and nozzle push the water flow in segments, so that the water containing sludge flows in the guide channel in a clockwise or counterclockwise direction.

[0020] S5. When the sludge-containing water flows through the sleeve, it forms an inner swirling flow under the push of the spiral groove; the fixed frame rotates synchronously with the sleeve, while the adjusting frame can rotate independently to further adjust the rotation angle of the magnet; the magnet can attract magnetic materials and drive the sludge to move, and also stir the water flow to form an outer swirling flow.

[0021] S6. The sewage circulation flow combined with the swirling flow generates multiple shear forces to promote the granulation of flocculent sludge; the two pairs of nozzles spray air to promote the aggregation of peripheral sludge particles toward the magnetic swirling structure, thereby improving the sludge granulation efficiency.

[0022] S7. After the sludge granulation treatment is completed, the light and loose flocculent sludge floats on the water surface and flows out from the sludge discharge pipe. The purified water is discharged from the water discharge pipe, and the granulated sludge is discharged from the sludge discharge pipe. At this time, the corresponding nozzles spray air to form an upper and lower isolation air wall, which prevents the upper and lower sludge from mixing.

[0023] Compared with existing technologies, this invention has the following beneficial technical effects: A three-section flow-guiding channel structure is set up. The central flow-guiding sleeve assembly is driven by a rotating ring and a rotating shaft to achieve multi-directional rotation, thus adjusting the angle. The two end swirling sleeve assemblies rotate and rise / fall in cooperation with the rotating sleeve and telescopic rotating drive component, thus adjusting the length of the flow-guiding channel structure. The propulsion structure's water flow propels the water flow in segments through the propulsion paddle and nozzle, causing the sludge-containing water to flow clockwise or counterclockwise within the flow-guiding channel. As the sleeve rotates, the sludge-containing water flows through the sleeve and forms an inner swirling flow under the propulsion of the spiral groove. The magnetic sheet attracts magnetic materials, moving the sludge and agitating the water flow, forming an outer swirling flow. The circulating sewage flow, combined with the swirling flow, generates multiple shear forces that apply selective pressure to the sludge flocs, simultaneously promoting microbial collision frequency, inducing extracellular polymer secretion, and accelerating mass transfer, ultimately shaping a dense, regular granular structure. Furthermore, the introduction of magnetic materials and the magnetic field further accelerate the formation of granular particles and increase the settling velocity. Furthermore, the jet flow control component promotes sludge aggregation by spraying air at the swirl outlet, forming an isolation air wall during drainage and slag discharge. This ultimately achieves efficient separation, with lightweight flocculent sludge discharged from the slag outlet pipe, purified water discharged from the water outlet pipe, and granular sludge discharged from the sludge outlet pipe. This solution, through the synergy of flow field control, magnetic field enhancement, and shear force optimization, significantly shortens the sludge granulation cycle, improves treatment efficiency and particle stability, and reduces hydraulic retention time, providing technical support for sludge reduction and resource utilization in wastewater treatment. Attached Figure Description

[0024] Figure 1 A structural diagram of a flocculent sludge granulation selection device;

[0025] Figure 2 For processing, see the internal structure diagram of the tank;

[0026] Figure 3 This is a combined structural diagram of the mounting bracket, the flow guide sleeve assembly, the swirl sleeve assembly, and the jet flow control assembly.

[0027] Figure 4 A combined structural diagram of the mounting bracket, the flow guide sleeve assembly, and the swirl sleeve assembly;

[0028] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0029] Figure 6 This is a partial sectional view of the flow guide sleeve assembly;

[0030] Figure 7 This is a top view of the bidirectional drive unit;

[0031] Figure 8 for Figure 7 Enlarged view at point B in the middle;

[0032] Figure 9 This is a structural diagram of the swirl sleeve assembly;

[0033] Figure 10 This is a structural diagram of the jet flow control component.

[0034] Reference numerals in the attached drawings: 1. Treatment tank; 101. Inlet pipe; 102. Slag outlet pipe; 103. Outlet pipe; 104. Sludge outlet pipe; 2. Mounting frame; 201. Mounting ring; 202. Rotating ring; 3. Flow guide sleeve assembly; 301. Bidirectional drive seat; 302. Rotating shaft; 303. Rotating sleeve; 304. Extension sleeve; 305. Telescopic sleeve; 306. Telescopic rotation drive component; 307. Water flow propeller; 308. Mounting sleeve; 309. Rotating seat; 310. Rotating frame; 311. Nozzle one; 4. Swirl sleeve assembly; 401. Sleeve body; 402. Spiral groove; 403. Fixing frame; 404. Adjusting frame; 405. Magnet piece; 5. Air jet flow adjustment assembly; 501. Air jet flow adjustment pipe; 502. Positioning block; 503. Nozzle two. Detailed Implementation

[0035] Example 1: This invention proposes a granulation and selection device for flocculent sludge, such as... Figures 1-4 As shown, the system includes a treatment tank 1, a mounting frame 2, a flow guide sleeve assembly 3, a vortex sleeve assembly 4, and a jet flow regulating assembly 5. The treatment tank 1 has an inlet pipe 101 and a sludge outlet pipe 102 at its upper end, and a sludge outlet pipe 104 and a water outlet pipe 103 at its lower end. The mounting frame 2 is located inside the treatment tank 1. The flow guide sleeve assembly 3 is located on the mounting frame 2 and rotates in multiple directions via the mounting frame 2. It contains multiple sets of pushing structures that drive the sludge-containing water flow in one direction. Two sets of vortex sleeve assemblies 4 are respectively located at both ends of the flow guide sleeve assembly 3. The three components form a flow guide channel structure. The vortex sleeve assembly 4 contains a vortex structure that cooperates with the pushing structure and drives the water flow to rotate, and an external magnetic vortex structure with a magnetic field. Two sets of jet flow regulating assemblies... 5 are respectively set on the outer periphery of the two sets of guide sleeve components 3, and correspond one-to-one with the positions of the sludge discharge pipe 102 and the water discharge pipe 103. On the one hand, the air jet promotes the sludge to gather towards the magnetic vortex structure at the outlet of the vortex, and on the other hand, it forms an isolation air wall when discharging water and sludge. After the sewage containing sludge is mixed with magnetic raw materials, it is circulated internally and externally in the direction of clockwise or counterclockwise along the guide channel through the cooperation of the guide sleeve component 3 and the vortex sleeve components 4 at both ends. During the circulation flow, vortices are formed at the vortex sleeve component 4 and the air jet flow adjustment component 5. The circulation flow and the vortex generate multiple shear forces to promote the granulation of flocculent sludge.

[0036] like Figure 5As shown, the mounting frame 2 includes a mounting ring 201 disposed along the inner wall of the treatment tank 1; a rotating ring 202 driven by a motor and gear is rotatably disposed on the inner wall of the mounting ring 201; the flow guide sleeve assembly 3 is disposed inside the rotating ring 202; the flow guide sleeve assembly 3 can be driven to rotate synchronously by rotating the rotating ring 202 along the mounting ring 201, so as to enhance the flexibility of the flow guide channel structure.

[0037] like Figure 6 As shown, the guide sleeve assembly 3 includes a bidirectional drive base 301; the bidirectional drive base 301 is hollow and open, and an installation sleeve 308 is provided inside. Rotating shafts 302 driven by motors are provided on the left and right sides, and are rotatably connected to the inner wall of the rotating ring 202 through the rotating shafts 302. Rotatable sleeves 303 are respectively connected to the upper and lower drive ends; the installation sleeve 308 rotates through the sleeve 303 and extends out of the two ends of the bidirectional drive base 301, and is respectively connected to the extension sleeve 304; a telescopic sleeve 305 is slidably connected to the extension sleeve 304, and the telescopic sleeve 305 is rotatably connected to the vortex sleeve assembly 4. A telescopic rotation drive component 306 is provided on the outer periphery; the telescopic rotation drive component 306 is provided on the sleeve 303, and drives the vortex sleeve assembly 4 to rotate and rise and fall.

[0038] It should be further explained that the bidirectional drive base 301, through the cooperation of a motor and gears, drives the rotating sleeve 303 to rotate on the outer periphery of the mounting sleeve 308 and the extension sleeve 304. The telescopic rotary drive component 306 drives the vortex sleeve assembly 4 to rotate and rise and fall, and the telescopic sleeve 305 slides synchronously along the extension sleeve 304 to realize the length adjustment of the guide channel structure.

[0039] like Figures 6-7 As shown, the actuation structure includes a jet propulsion component located within the mounting sleeve 308 and a rotary propulsion component located within the extension sleeve 304.

[0040] like Figure 8 As shown, the jet propulsion component is arranged in a ring along the inner wall of the mounting sleeve 308, including a rotating seat 309 rotatably mounted on the mounting sleeve 308, a rotating frame 310 rotatably mounted on the rotating seat 309, and a nozzle 311 mounted on the rotating frame 310 and connected to an external air source.

[0041] It should be further explained that the rotating base 309 and the rotating frame 310 are driven to rotate by corresponding drive structures, and the directions of rotation are staggered; the nozzle 311 adjusts the direction of air jet by rotating the rotating base 309 and the rotating frame 310. Different air jet directions can guide and adjust the water flow, causing it to flow clockwise or counterclockwise.

[0042] like Figure 6As shown, the rotating propulsion component is configured as a water flow propulsion paddle 307; the upward and downward water flow propulsion paddles 307 both propel the water flow in the same direction as the nozzle 311. The water flow propulsion paddles 307 and nozzle 311 propel the water flow in segments, causing the sludge-containing water to flow in a clockwise or counterclockwise direction within the guide channel, promoting sludge granulation during the flow process.

[0043] like Figure 9 As shown, the vortex sleeve assembly 4 includes a sleeve body 401 that is rotatably connected to the end of the telescopic sleeve 305 and simultaneously connected to the telescopic rotation drive 306; the vortex structure is disposed inside the sleeve body 401; and the magnetic vortex structure is disposed outside the sleeve body 401.

[0044] It should be further explained that the telescopic rotary drive component 306 is a cylinder structure, with its cylinder end located at the rotating sleeve 303 and the telescopic rod end connected to the sleeve 401; the sleeve 401 rotates synchronously with the rotating sleeve 303 and moves synchronously with the telescopic rod as it rises and falls.

[0045] The swirling structure is configured as a spiral groove 402 opened along the inner wall of the sleeve 401; when the sludge-containing water flows through the sleeve 401, it forms an inner swirling flow under the push of the spiral groove 402.

[0046] The magnetic swirling structure includes a fixed frame 403 fitted on the outer wall of the sleeve 401; an adjusting frame 404 driven by a motor to rotate is provided on the fixed frame 403; and a magnetic piece 405 is provided on the adjusting frame 404.

[0047] The fixed frame 403 rotates synchronously with the sleeve 401, while the adjusting frame 404 can rotate independently to further adjust the rotation angle of the magnet 405. The magnet 405 can both attract magnetic materials, causing the sludge to move, and agitate the water flow, forming an external vortex. This vortex can then contribute to the sludge granulation process.

[0048] Magnetic particles (such as Fe3O4 and magnetically modified vermiculite) serve as the core for microbial attachment, adsorbing bacteria and extracellular polymers through surface charge, accelerating microbial aggregation and the formation of granular nascent particles. Magnet sheet 405 generates a magnetic field, creating an attraction between magnetic particles, prompting sludge flocs to collide and combine, forming larger, denser granular structures and significantly increasing settling velocity. Magnetic substances (such as Fe3O4) can stimulate microorganisms to secrete more extracellular polymers, especially proteins and polysaccharides. Magnetic particles also increase sludge density, accelerating sedimentation, and finally, rapid sludge separation is achieved through magnetic separation technology (such as magnetic recovery systems), reducing hydraulic retention time.

[0049] The effects of cyclone flow on sludge granulation are as follows:

[0050] Selective pressure is applied: the shear force generated by the swirling flow exerts selective pressure on the sludge flocs. Loose, low-strength flocs or fine particles cannot resist this shear force and will be broken up or lost with the effluent. Dense, high-strength microbial aggregates (the precursors to granular sludge) are better able to resist the shear force and are thus preserved and grow. This "survival of the fittest" process forces microorganisms to secrete more extracellular polymers to survive, forming a denser and stronger structure, ultimately promoting granulation.

[0051] Enhancing mass transfer: Swirling enhances mixing and turbulence within the reactor. This increases the rate of substrate (organic matter, nutrients) and dissolved oxygen (in aerobic systems) diffusion into the particle interior. It also accelerates the rate of metabolite diffusion from the particle interior to the exterior. Improved mass transfer efficiency promotes the activity and growth of microorganisms within the particle, supporting the formation of larger, more stable particles.

[0052] Increased microbial collision frequency: Swirling flow increases the collision frequency between sludge flocs or micro-aggregates. Frequent collisions provide more opportunities for microorganisms to aggregate, adhere to each other, and eventually form larger particles.

[0053] Promoting Extracellular Polymer Secretion: When microorganisms sense external shear force (stress), they secrete more extracellular polymers as a protective response. EPS acts as the "glue" for sludge granulation; its main components, polysaccharides and proteins, effectively adhere to microbial cells, forming a stable three-dimensional network structure, which is crucial for particle formation, structure, and strength. Swirling flow is an important environmental signal that induces massive EPS secretion.

[0054] Shaping Particle Structure: Continuous, moderate swirling helps shape the particle structure, making it denser, smoother, and more regular (approaching spherical). This structure is more conducive to settling and has a stronger resistance to shear failure.

[0055] like Figure 10 As shown, the jet flow control assembly 5 includes a positioning block 502 disposed along the inner wall of the treatment tank 1; the annular jet flow control pipe 501 is fixed by the positioning block 502, and a nozzle 503 is provided that is connected to an external air source and sprays jets toward the center.

[0056] It should be further noted that the upper jet flow regulating pipe 501 is located below the slag discharge pipe 102; the lower jet flow regulating pipe 501 is located below the water discharge pipe 103.

[0057] By spraying air onto the casing 401 through nozzle 2 503, the sludge particles on the periphery are encouraged to converge toward the magnetic vortex structure, thereby improving the sludge granulation efficiency. After the sludge granulation treatment is completed, the lightweight, loose flocculent sludge floats on the water surface and flows out from the sludge discharge pipe 102, while the purified water is discharged from the water discharge pipe 103. At this time, the corresponding nozzle 2 503 sprays air, forming an upper and lower isolation air wall to prevent the sludge from mixing.

[0058] Example 2: This example proposes a method for selecting flocculent sludge granules, using the flocculent sludge granulation device described in Example 1. The steps are as follows:

[0059] S1. Wastewater mixed with magnetic raw materials enters the treatment tank 1 from the inlet pipe 101 until the water level is higher than the slag outlet pipe 102;

[0060] S2. The rotating ring 202 rotates along the mounting ring 201, and the rotating shaft 302 drives the bidirectional drive seat 301 to rotate alternately. The flow channel structure rotates in multiple directions, and the angle adjustment begins.

[0061] S3, the rotating sleeve 303 rotates on the outer periphery of the mounting sleeve 308 and the extension sleeve 304, the telescopic rotation drive 306 drives the vortex sleeve assembly 4 to rotate and rise and fall, the telescopic sleeve 305 slides synchronously along the extension sleeve 304, and the length adjustment of the guide channel structure begins.

[0062] S4. The nozzle 311 adjusts the direction of the jet by rotating the rotating seat 309 and the rotating frame 310; the water flow propulsion paddle 307 and the nozzle 311 propel the water flow in segments, so that the water containing sludge flows in the guide channel in a clockwise or counterclockwise direction.

[0063] S5. When the sludge-containing water flows through the sleeve 401, it forms an inner swirling flow under the push of the spiral groove 402; the fixed frame 403 rotates synchronously with the sleeve 401, while the adjusting frame 404 can rotate independently to further adjust the rotation angle of the magnet 405; the magnet 405 can move the sludge by adsorbing the magnetic material on the one hand, and stir the water flow on the other hand to form an outer swirling flow.

[0064] S6. The sewage circulation flow combined with the swirling flow generates multiple shear forces to promote the granulation of flocculent sludge; Nozzle 2 503 sprays air onto the sleeve 401 to promote the aggregation of peripheral sludge particles toward the magnetic swirling structure and improve sludge granulation efficiency.

[0065] S7. After the sludge granulation treatment is completed, the light and loose flocculent sludge floats on the water surface and flows out from the sludge discharge pipe 102. The purified water is discharged from the water discharge pipe 103, and the granulated sludge is discharged from the sludge discharge pipe 104. At this time, the corresponding nozzle 503 sprays air to form an upper and lower isolation air wall to prevent the upper and lower sludge from mixing.

[0066] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A granulation and selection device for flocculent sludge, characterized in that, include: The treatment tank (1) is equipped with an inlet pipe (101) and a slag outlet pipe (102) at the upper end, and a sludge outlet pipe (104) and a water outlet pipe (103) at the lower end. Mounting rack (2), which is located inside the processing tank (1); The flow guide sleeve assembly (3) is located on the mounting frame (2) and is driven to rotate in multiple directions by the mounting frame (2). The interior is equipped with multiple sets of pushing structures that drive the sludge-containing water flow in one direction. Swirl sleeve assembly (4), two sets of swirl sleeve assemblies (4) are respectively set at both ends of the guide sleeve assembly (3), the three together form a guide channel structure. The swirl sleeve assembly (4) is equipped with a swirl structure that cooperates with the push structure and pushes the water flow to rotate, and is equipped with a magnetic suction swirl structure with a magnetic field on the outside. And jet flow adjustment components (5), two sets of jet flow adjustment components (5) are respectively set on the outer periphery of two sets of guide sleeve components (3), and correspond one-to-one with the positions of slag discharge pipe (102) and water discharge pipe (103). On the one hand, jets promote the sludge to gather toward the magnetic vortex structure at the outlet of the vortex, and on the other hand, an isolation air wall is formed when draining water and discharging sludge. After the sludge-containing wastewater is mixed with magnetic raw materials, it is circulated internally and externally in the direction of clockwise or counterclockwise through the flow guide sleeve assembly (3) and the swirl sleeve assembly (4) at both ends. During the circulation flow, swirl is formed at the swirl sleeve assembly (4) and the jet flow adjustment assembly (5). The circulation flow combined with the swirl generates multiple shear forces to promote the granulation of flocculent sludge. The mounting bracket (2) includes a mounting ring (201) disposed along the inner wall of the treatment tank (1); a rotating ring (202) is rotatably disposed on the inner wall of the mounting ring (201). The flow guide sleeve assembly (3) is set inside the rotating ring (202). The flow guide sleeve assembly (3) includes a bidirectional drive seat (301). The bidirectional drive seat (301) is hollow and open, and an installation sleeve (308) is provided inside. Rotating shafts (302) are provided on the left and right sides, and are rotatably connected to the inner wall of the rotating ring (202) through the rotating shafts (302). Rotatable rotating sleeves (303) are respectively connected to the upper and lower drive ends. The mounting sleeve (308) rotates through the rotating sleeve (303) and extends out of both ends of the bidirectional drive seat (301) and is connected to the extension sleeve (304); the extension sleeve (304) is slidably connected to the telescopic sleeve (305), the telescopic sleeve (305) is rotatably connected to the vortex sleeve assembly (4), and the outer periphery is provided with a telescopic rotation drive component (306); the telescopic rotation drive component (306) is provided on the rotating sleeve (303) and drives the vortex sleeve assembly (4) to rotate and rise and fall; The propulsion structure includes a jet propulsion component located within the mounting sleeve (308) and a rotary propulsion component located within the extension sleeve (304).

2. The flocculent sludge granulation and selection device according to claim 1, characterized in that, The jet propulsion component is arranged in a ring along the inner wall of the mounting sleeve (308), including a rotating seat (309) rotatably mounted on the mounting sleeve (308), a rotating frame (310) rotatably mounted on the rotating seat (309), and a nozzle (311) mounted on the rotating frame (310) and connected to an external air source.

3. The flocculent sludge granulation and selection device according to claim 2, characterized in that, The rotating propulsion component is set as a water flow propulsion paddle (307); the upper and lower water flow propulsion paddles (307) push the water flow in the same direction as the action direction of the nozzle (311).

4. The flocculent sludge granulation and selection device according to claim 3, characterized in that, The swirl sleeve assembly (4) includes a sleeve body (401) that is rotatably connected to the end of the telescopic sleeve (305) and simultaneously connected to the telescopic rotation drive (306). The swirl structure is located inside the sleeve (401); The magnetic swirling structure is located outside the sleeve (401).

5. The flocculent sludge granulation and selection device according to claim 4, characterized in that, The swirling structure is configured as a spiral groove (402) opened along the inner wall of the sleeve (401); when the sludge-containing water flows through the sleeve (401), it forms an inner swirling flow under the push of the spiral groove (402).

6. The flocculent sludge granulation and selection device according to claim 5, characterized in that, The magnetic swirling structure includes a fixed frame (403) fitted on the outer wall of the sleeve (401); an adjusting frame (404) rotating in a circle is provided on the fixed frame (403); and a magnetic piece (405) is provided on the adjusting frame (404).

7. The flocculent sludge granulation and selection device according to claim 6, characterized in that, The jet flow control assembly (5) includes a positioning block (502) disposed along the inner wall of the treatment tank (1); an annular jet flow control pipe (501) is fixed by the positioning block (502) and a nozzle two (503) is provided that is connected to an external air source and sprays jets toward the center. The upper jet flow control pipe (501) is located below the slag discharge pipe (102); the lower jet flow control pipe (501) is located below the water discharge pipe (103).

8. A method for selecting flocculent sludge granules, characterized in that, The steps of using the flocculent sludge granulation selection device as described in claim 7 are as follows: S1. Sewage mixed with magnetic raw materials enters the treatment tank (1) from the inlet pipe (101) until the water level is higher than the slag outlet pipe (102). S2. The rotating ring (202) rotates along the mounting ring (201), and the rotating shaft (302) drives the bidirectional drive seat (301) to rotate alternately, and the flow channel structure rotates in multiple directions, starting the angle adjustment; S3, the rotating sleeve (303) rotates on the outer periphery of the mounting sleeve (308) and the extension sleeve (304), the telescopic rotating drive (306) drives the vortex sleeve assembly (4) to rotate and rise, the telescopic sleeve (305) slides synchronously along the extension sleeve (304), and the length of the guide channel structure begins to adjust. S4. Nozzle 1 (311) adjusts the direction of air jet by rotating the rotating seat (309) and rotating frame (310); water flow propulsion paddle (307) and nozzle 1 (311) propel the water flow in segments, so that the water containing sludge flows in the guide channel in a clockwise or counterclockwise direction. S5. When the sludge-containing water flows through the sleeve (401), it forms an inner swirling flow under the push of the spiral groove (402); the fixed frame (403) rotates synchronously with the sleeve (401), while the adjusting frame (404) rotates independently to further adjust the rotation angle of the magnet (405); the magnet (405) on the one hand drives the sludge to move by adsorbing magnetic raw materials, and on the other hand stirs the water flow to form an outer swirling flow. S6. The sewage circulation flow combined with the swirling flow generates multiple shear forces to promote the granulation of flocculent sludge; Nozzle 2 (503) sprays air onto the sleeve (401) to promote the aggregation of peripheral sludge particles toward the magnetic swirling structure and improve the sludge granulation efficiency. S7. After the sludge granulation treatment is completed, the light and loose flocculent sludge floats on the water surface and flows out from the sludge discharge pipe (102). The purified water is discharged from the water discharge pipe (103), and the granulated sludge is discharged from the sludge discharge pipe (104). At this time, the corresponding nozzle two (503) sprays air to form an upper and lower isolation air wall, which respectively prevents the upper and lower sludge from mixing.

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