A rapid sludge treatment device and process using magnetic field eddy currents

Abstract

This invention relates to the field of sludge treatment technology, specifically to a magnetic field eddy current sludge rapid treatment device and process. The device includes a mixing and homogenizing unit, a material conveying unit, a chemical conditioning unit, a temporary storage and conditioning unit, a magnetic field eddy current cell breaking unit, and a solid-liquid separation unit, all connected sequentially by connecting pipes. The device and process of this invention produce products with high resource value: the resulting low-moisture sludge cake retains a good organic matter content (approximately 40-50% dry basis), and the pathogen and heavy metal indicators meet national standards such as "Sludge for Landscaping and Pollutant Disposal in Urban Wastewater Treatment Plants," allowing for safe land use either directly or after short-term composting.

Description

Technical Field

[0001] This invention relates to the field of sludge treatment technology, and in particular to a rapid sludge treatment device and process using magnetic field eddy currents. Background Technology

[0002] With the development of the manufacturing industry, more and more waste is generated, of which sludge accounts for the largest proportion. Generally speaking, sludge is a product of sewage treatment. It is a heterogeneous body composed of organic fragments, bacterial cells, inorganic particles, colloids, etc. Sludge has a high water content and contains a lot of organic matter. Therefore, the treatment of sludge requires multiple processes.

[0003] Currently, when dewatering sludge, simple extrusion dewatering cannot completely remove free and bound water from the sludge. Therefore, a magnetic field is needed, along with flocculants and magnetic seeds. After thorough mixing with the sludge, the size of the sludge flocs increases, the extracellular polymer structure of the sludge is destroyed, and free and some bound water is removed. However, when using existing equipment, the presence of some lumpy particles in the sludge prevents it from fully mixing with the flocculants and magnetic seeds during mixing, resulting in incomplete reaction and affecting the treatment effect and efficiency of the sludge.

[0004] In existing technologies, various pretreatment techniques have been developed to break down sludge cell walls and release bound water to improve dewatering performance, including high-pressure filtration, hot water hydrolysis, ultrasonic disruption, ozone oxidation, and enzymatic hydrolysis. For example, Chinese patent CN112759083B discloses a biological selector device based on hydraulic retention time control, which reduces sludge volume by regulating the microbial growth environment. However, this method is essentially a biological process with a long treatment cycle (measured in days) and cannot effectively solve the problems of heavy metal stabilization and immediate inactivation of pathogens. While ozone oxidation and high-pressure homogenization have high cell wall disruption efficiency, the former suffers from high energy consumption and expensive operating costs in ozone preparation; the latter has extremely high requirements for equipment materials, sealing, and pressure resistance, posing safety hazards and high maintenance costs.

[0005] Based on this, the present invention designs a rapid sludge treatment device and process using magnetic field eddy currents to solve the above problems. It is a revolutionary sludge pretreatment technology that is highly efficient, fast, low in energy consumption, safe, and can simultaneously achieve harmlessness and resource utilization. Summary of the Invention

[0006] The purpose of this invention is to provide a rapid sludge treatment device using magnetic field eddy currents, which aims to solve the technical problems existing in the prior art mentioned in the background section.

[0007] The present invention is implemented as follows: a rapid sludge treatment device using magnetic field eddy current, the device comprising a mixing and homogenizing unit, a material conveying unit, a chemical conditioning unit, a temporary storage and conditioning unit, a magnetic field eddy current cell disruption unit, and a solid-liquid separation unit, which are connected in sequence via connecting pipes.

[0008] The mixing and homogenizing unit includes a mixing tank for receiving and mixing raw sludge;

[0009] The material conveying unit includes a conveying pump connected to the outlet of the mixing tank;

[0010] The temporary storage and conditioning unit includes a temporary storage tank connected to the outlet of the delivery pump;

[0011] The chemical conditioning unit includes a reagent addition device connected to the temporary storage tank. The reagent addition device includes at least a first dosing tank for adding ferrous sulfate solution and a second dosing tank for adding lime slurry suspension.

[0012] The magnetic field eddy current cell-breaking unit includes:

[0013] Magnetic field eddy current main body cylinder: includes an installation cylinder body disposed on the magnetic field eddy current main body cylinder, a feed pipe for sludge flow is fixedly installed on the surface of the installation cylinder body, an inlet communicating with the inside of the feed pipe is fixedly provided on the surface of the feed pipe, and an outlet communicating with the inside of the installation cylinder body is provided on the surface of the installation cylinder body.

[0014] Scraping mechanism: includes a corrugated extrusion block installed inside the feed pipe for squeezing sludge. The surface of the corrugated extrusion block is in contact with two scraping ropes that conform to its shape. Each scraping rope is sleeved on a lower support rod, a movable rod, an upper support rod, a first gear, and a second gear for support. A compression spring is fixedly installed on the surface of the movable rod, and arc-shaped grooves for limiting the scraping ropes are opened on the lower support rod, the movable rod, and the upper support rod.

[0015] Transmission mechanism: used to drive the scraping rope to rotate in a circular motion;

[0016] Injection mechanism: Used to inject flocculant and magnetic seed into sludge by cooperating with wave extrusion blocks;

[0017] Extrusion mechanism: used in conjunction with corrugated extrusion blocks to extrude sludge during circulation;

[0018] Drive mechanism: used to drive the wave extrusion block to rotate;

[0019] The solid-liquid separation unit includes a filter press connected to the outlet of the magnetic field eddy current cell breaking unit, and the filter press is provided with a solid outlet and a liquid outlet.

[0020] Furthermore, the transmission mechanism includes a driving bevel gear fixedly mounted on the drive mechanism. The driving bevel gear meshes with two driven bevel gears. Each driven bevel gear is rotatably connected to the extrusion mechanism. A bevel gear set is fixedly mounted on the shaft end of each driven bevel gear. The bevel gear set is rotatably connected to the extrusion mechanism. A driving transmission wheel is coaxially fixedly mounted on the surface of the bevel gear set. A transmission belt is sleeved on the surface of the driving transmission wheel. The other end of the transmission belt is sleeved on the driven transmission wheel. The driven transmission wheel is coaxially fixedly mounted on one end of the first gear. An upper rotating wheel is coaxially fixedly mounted on the other end of the first gear. A synchronous belt is sleeved on the surface of the upper rotating wheel. The other end of the synchronous belt is sleeved on the lower rotating wheel. The lower rotating wheel is coaxially fixedly mounted on one end of the second gear.

[0021] Furthermore, the spraying mechanism includes two cross piston rods in contact with the surface of the corrugated extrusion block. Each cross piston rod has a compression spring fixedly mounted on its surface. The end of the compression spring away from the cross piston rod is connected to the surface of the storage cylinder. The cross piston rod is slidably connected to the inner wall of the storage cylinder. Two spray heads are fixedly mounted on the surface of the storage cylinder and communicate with the interior of the storage cylinder. A circumferential groove is opened inside the storage cylinder. A storage bin is fixedly mounted on the surface of the discharge pipe and communicates with the interior of the drive mechanism. The drive mechanism is also connected to the interior of the storage cylinder. A one-way valve is installed on the spray head, and a one-way valve is also installed at the connection between the drive mechanism and the storage cylinder.

[0022] Furthermore, the extrusion mechanism includes a fixed cylinder block fixedly installed on the inner wall of the feeding pipe. Two guide ports are opened on the surface of the fixed cylinder block. A raised pressure cylinder that cooperates with the corrugated extrusion block for extrusion is fixedly installed on the inner wall of the fixed cylinder block. A lower support rod and an upper support rod are fixedly installed on the inner wall of the fixed cylinder block. A movable rod is slidably connected to the inner wall of the raised pressure cylinder. The other end of the compression spring is connected to the inner wall of the raised pressure cylinder. A scraping rope passes through the fixed cylinder block and is slidably connected to the fixed cylinder block. A driven bevel gear passes through the fixed cylinder block and is rotatably connected to the fixed cylinder block. The first gear, the second gear, and the driving transmission wheel are all rotatably connected to the inner wall of the fixed cylinder block. A storage cylinder is fixedly installed on the inner wall of the fixed cylinder block.

[0023] Furthermore, the driving mechanism includes a driving shaft rotatably connected to the feeding pipe. The interior of the driving shaft is connected to the storage cylinder and the storage silo, respectively. One end of the driving shaft is connected to an external driving source. An active bevel gear and a corrugated extrusion block are fixedly installed on the surface of the driving shaft. The surface of the driving shaft is rotatably connected to the fixed cylinder block and the storage cylinder, respectively. Multiple stirring rods with different angles are fixedly installed on the other end of the driving shaft. A one-way valve is installed at the connection between the driving shaft and the storage cylinder.

[0024] Furthermore, the device also includes a circulation mechanism, which includes a circulation pipe with its two ends fixedly installed on the feeding pipe and the mounting cylinder respectively, and the interior of the circulation pipe is connected to the interior of the feeding pipe and the mounting cylinder respectively. Both ends of the circulation pipe are equipped with valve switches, and a circulation pump is installed on the circulation pipe, with the circulation pump fixedly installed on the mounting cylinder.

[0025] Furthermore, a protective frame is fixedly installed on the mounting cylinder, a control board is installed on the surface of the protective frame, two opposing magnets are fixedly installed on the surface of the feeding pipe, and a cooling fan for heat dissipation is installed on the inner wall of the protective frame.

[0026] A rapid sludge treatment process implementing the above-mentioned magnetic field eddy current includes the following steps:

[0027] S1: Pump municipal waste sludge, industrial sludge, or livestock manure with a moisture content of 95%-99% into the mixing tank for homogenization and mixing; S2: Start the delivery pump to quantitatively deliver the homogenized sludge to the temporary storage tank; S3: Start the reagent addition device and add reagents to the temporary storage tank at a ratio of 10-30 kg ferrous sulfate and 20-50 kg lime milk per ton of dry sludge, and mix thoroughly; S4: Pump the conditioned sludge into the magnetic field eddy current cell breaking unit. Under the action of the rotating electromagnetic field, the ferromagnetic elements in the sludge generate high-speed eddy currents and micro-arcs. S5: The sludge after cell wall disruption treatment enters the filter press for deep dewatering, resulting in solid sludge cake and filtrate with a water content of ≤40%; S6: The filtrate is tested. If the water quality indicators meet the Class A standard of the "Urban Wastewater Treatment Plant Pollutant Discharge Standard" or the predetermined reuse standard, the liquid is introduced into the collection tank; if it does not meet the standard, it is returned to the mixing tank for further treatment; S8: The solid sludge cake discharged from the filter press can be used as nutrient soil for landscaping, soil conditioner, or raw material for further composting.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. This invention utilizes the action of the wave extrusion block on the spraying mechanism during operation to drive the spraying mechanism to spray flocculant and magnetic seed, thereby achieving the purpose of automatically breaking down particles in sludge and allowing the flocculant and magnetic seed to fully react with the broken sludge.

[0030] 2. This invention utilizes the contouring action of the scraping rope on the corrugated extrusion block, ensuring continuous contact between the block and the rope during rotation. Particles adhering to the block are scraped off by the rope's resistance, thus automatically removing broken particles from the surface of the block and improving its extrusion efficiency.

[0031] 3. The device and process of this invention provide a leap in processing efficiency: the traditional biological / chemical cell-wall breaking process that takes several hours or even days is shortened to seconds. The equipment has a large throughput and a small footprint, making it especially suitable for the renovation of old plants or the construction of new intensive projects with limited land.

[0032] 4. The device and process of this invention achieve "harmlessness-reduction-resource utilization" in a three-in-one simultaneous manner: cell wall breaking and dehydration, pathogen inactivation and heavy metal stabilization are completed simultaneously in a single device. The process is compact and does not require multiple sets of devices in series, resulting in better investment and operating costs.

[0033] 5. The operating cost of the device and process of this invention is significantly reduced: the core cell-wall breaking process is a physical effect, supplemented by low-cost conventional chemical agents (ferrous sulfate, lime), and the overall cost per ton of sludge treated is reduced by 20%-40% compared with ozone oxidation, thermal drying and other technologies. The improved dewatering efficiency also greatly reduces the energy consumption and costs of subsequent drying or transportation.

[0034] 6. The device and process of this invention have high resource utilization value: the obtained low-moisture sludge cake retains a good organic matter content (approximately 40-50% dry basis), and the pathogen and heavy metal indicators meet national standards such as "Sludge Quality for Landscaping and Pollutant Disposal in Urban Wastewater Treatment Plants," allowing for safe land use either directly or after short-term composting. Simultaneously, the sludge after cell wall disruption, as an anaerobic digestion substrate, can increase biogas production by approximately 30%, demonstrating significant energy recovery potential. Attached Figure Description

[0035] Figure 1 A schematic diagram of a sludge rapid treatment device using magnetic field eddy currents provided in an embodiment of the present invention;

[0036] Figure 2 This is a schematic cross-sectional view of the present invention;

[0037] Figure 3 For the present invention Figure 2 A magnified structural diagram at point A;

[0038] Figure 4 For the present invention Figure 1 A cross-sectional structural diagram from another perspective;

[0039] Figure 5 For the present invention Figure 4 A magnified structural diagram at point B;

[0040] Figure 6 For the present invention Figure 5 A magnified structural diagram at point C;

[0041] Figure 7 This is a schematic diagram of the stepped cross-sectional structure of a sludge rapid treatment device with magnetic field eddy current according to the present invention.

[0042] Figure 8 For the present invention Figure 7 A magnified structural diagram at point D;

[0043] Figure 9 This is another cross-sectional structural schematic diagram of the sludge rapid treatment device with magnetic field eddy current according to the present invention.

[0044] Figure 10 For the present invention Figure 9 A magnified structural diagram at point E;

[0045] Figure 11 For the present invention Figure 9 A magnified structural diagram at point F;

[0046] Figure 12 This is a process flow diagram of the present invention;

[0047] Figure 13 Electron microscopy scanning of treated sludge Figure 1 ;

[0048] Figure 14 Electron microscopy scanning of treated sludge Figure 2 ;

[0049] Figure 15 Electron microscopy scanning of treated sludge Figure 3 ;

[0050] Figure 16 Electron microscopy scanning of treated sludge Figure 4 ;

[0051] Figure 17 This is a quantitative image of the treated sludge obtained through electron microscopy.

[0052] In the attached diagram: 1. Main body of the magnetic field eddy current cylinder; 101. Mounting cylinder body; 102. Protective frame; 103. Electromagnet; 104. Feed inlet; 105. Discharge outlet; 106. Control panel; 107. Cooling fan; 108. Discharge pipe; 2. Scraping mechanism; 201. Corrugated extrusion block; 202. Scraping rope; 203. Lower support rod; 204. Movable rod; 205. Compression spring; 206. Upper support rod; 207. First gear; 208. Second gear; 3. Transmission mechanism; 301. Driving bevel gear; 302. Driven bevel gear; 303. Cone... 304 Gear set; 305 Drive wheel; 306 Drive belt; 307 Driven wheel; 308 Upper rotating wheel; 309 Synchronous belt; 300 Lower rotating wheel; 4. Spraying mechanism; 401 Cross piston rod; 402 Compression spring; 403 Storage cylinder; 404 Spray head; 405 Storage hopper; 5. Compression mechanism; 501 Fixed cylinder block; 502 Guide port; 503 Protruding pressure cylinder; 6. Drive mechanism; 601 Drive shaft; 602 Stirring rod; 7. Circulation mechanism; 701 Circulation pump; 702 Circulation pipeline. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0054] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various elements, but unless otherwise stated, these elements are not limited by these terms. These terms are used only to distinguish one element from another.

[0055] Example 1

[0056] like Figure 1 , Figure 5 and Figure 9 As shown, in one embodiment, a rapid sludge treatment device using magnetic eddy current is proposed. The device includes a mixing and homogenizing unit, a material conveying unit, a chemical conditioning unit, a temporary storage and conditioning unit, a magnetic eddy current cell disruption unit, and a solid-liquid separation unit, which are connected in sequence via connecting pipes.

[0057] The mixing and homogenizing unit includes a mixing tank for receiving and mixing raw sludge;

[0058] The material conveying unit includes a conveying pump connected to the outlet of the mixing tank;

[0059] The temporary storage and conditioning unit includes a temporary storage tank connected to the outlet of the delivery pump;

[0060] The chemical conditioning unit includes a reagent addition device connected to the temporary storage tank. The reagent addition device includes at least a first dosing tank for adding ferrous sulfate solution and a second dosing tank for adding lime slurry suspension.

[0061] The magnetic field eddy current cell-breaking unit includes:

[0062] Magnetic field eddy current main body cylinder 1: includes a mounting cylinder body 101 disposed on the magnetic field eddy current main body cylinder 1, a feeding pipe 108 for sludge flow is fixedly installed on the surface of the mounting cylinder body 101, an inlet 104 communicating with the inside of the feeding pipe 108 is fixedly provided on the surface of the feeding pipe 108, and an outlet 105 communicating with the inside of the mounting cylinder body 101 is provided on the surface of the mounting cylinder body 101.

[0063] Scraping mechanism 2: includes a corrugated extrusion block 201 installed inside the discharge pipe 108 for squeezing sludge. The surface of the corrugated extrusion block 201 is in contact with two scraping ropes 202 that are similar in shape to it. Each scraping rope 202 is sleeved on a lower support rod 203, a movable rod 204, an upper support rod 206, a first gear 207, and a second gear 208 for support. A compression spring 205 is fixedly installed on the surface of the movable rod 204. The lower support rod 203, the movable rod 204, and the upper support rod 206 are all provided with arc-shaped grooves that limit the movement of the scraping ropes 202.

[0064] Transmission mechanism 3: used to drive the scraping rope 202 to rotate in a cycle;

[0065] Spraying mechanism 4: used to spray flocculant and magnetic seed into sludge by cooperating with wave extrusion block 201;

[0066] Extrusion mechanism 5: used in conjunction with the corrugated extrusion block 201 to circulate and extrude sludge;

[0067] Drive mechanism 6: Used to drive the wave extrusion block 201 to rotate;

[0068] The solid-liquid separation unit includes a filter press connected to the outlet of the magnetic field eddy current cell breaking unit, and the filter press is provided with a solid outlet and a liquid outlet.

[0069] In practical applications, when treating sludge, as described in the embodiments of the present invention... Figure 1 As shown, sludge enters the discharge pipe 108 through the feed inlet 104, and simultaneously, under the action of the drive mechanism 6, the corrugated extrusion block 201 rotates, as... Figure 5As shown, due to the inclined setting of the corrugated extrusion block 201, the corrugated extrusion block 201, in cooperation with the extrusion mechanism 5, crushes and extrudes the sludge. During operation, the corrugated extrusion block 201 acts on the injection mechanism 4, driving the injection mechanism 4 to spray flocculant and magnetic seeds, thereby achieving the purpose of automatically crushing the particles in the sludge. This allows the flocculant and magnetic seeds to fully react with the crushed sludge. During the rotation of the corrugated extrusion block 201, because the viscosity of the sludge particles is greater than the viscosity of the sludge fluid itself, the crushed particles adhere to the surface of the corrugated extrusion block 201 during the extrusion process. At this time, the scraping rope 202 guides the corrugated extrusion block 201 to follow its shape, thus... During the rotation of the corrugated extrusion block 201, it continuously contacts the scraping rope 202. Particles adhering to the corrugated extrusion block 201 are scraped off by the obstruction of the scraping rope 202, thus automatically scraping off broken particles from the surface of the corrugated extrusion block 201 and improving its extrusion efficiency. Simultaneously, under the action of the transmission mechanism 3, the scraping rope 202 revolves around the lower support rod 203, movable rod 204, upper support rod 206, first gear 207, and second gear 208, scraping off particles adhering to the scraping rope 202 by the obstruction of the extrusion mechanism 5. This prevents sludge from accumulating on the scraping rope 202, which would increase the motion load on the device and affect its efficiency. Figure 9 As shown, after the sludge and magnetic seed are mixed and fall into the installation cylinder 101, the sludge is stirred again by the drive mechanism 6 to increase the thoroughness of the mixing and improve the mixing efficiency of the sludge.

[0070] like Figure 7 , Figure 8 , Figure 10 and Figure 11 As shown, in a preferred embodiment of the present invention, the transmission mechanism 3 includes a driving bevel gear 301 fixedly mounted on the drive mechanism 6. The driving bevel gear 301 meshes with two driven bevel gears 302. Each driven bevel gear 302 is rotatably connected to the extrusion mechanism 5. A bevel gear set 303 is fixedly mounted on the shaft end of each driven bevel gear 302. The bevel gear set 303 is rotatably connected to the extrusion mechanism 5. A driving transmission wheel 304 is coaxially fixedly mounted on the surface of the bevel gear set 303. A transmission belt 305 is sleeved on the surface of the driving transmission wheel 304. The other end of the transmission belt 305 is sleeved on the driven transmission wheel 306. The driven transmission wheel 306 is coaxially fixedly mounted on one end of the first gear 207. An upper rotating wheel 307 is coaxially fixedly mounted on the other end of the first gear 207. A synchronous belt 308 is sleeved on the surface of the upper rotating wheel 307. The other end of the synchronous belt 308 is sleeved on the lower rotating wheel 309. The lower rotating wheel 309 is coaxially fixedly mounted on one end of the second gear 208.

[0071] In practical application, when the drive mechanism 6 rotates and drives the wave extrusion block 201 to rotate and extrude, the drive mechanism 6 drives the active bevel gear 301 to rotate, as shown in the example. Figure 8 As shown, the rotation of the driving bevel gear 301 drives the bevel gear set 303 to rotate through the meshing transmission of the bevel gears. At this time, the bevel gear set 303 drives the driving transmission wheel 304 to rotate, as shown. Figure 10 and Figure 11 As shown, the first gear 207 and the second gear 208 are driven to rotate by the transmission action of the gear belt. The rotation of the first gear 207 and the second gear 208 drives the scraping rope 202 to revolve through the friction between them. This causes the sludge accumulated on the scraping rope 202 to be scraped off by the limiting action of the squeezing mechanism 5, so as to avoid affecting the scraping efficiency of the scraping rope 202.

[0072] like Figure 6 As shown, in another preferred embodiment of the present invention, the spraying mechanism 4 includes two cross piston rods 401 that are in contact with the surface of the wave extrusion block 201. Each cross piston rod 401 has a compression spring 402 fixedly installed on its surface. The end of the compression spring 402 away from the cross piston rod 401 is connected to the surface of the storage cylinder 403. The cross piston rod 401 is slidably connected to the inner wall of the storage cylinder 403. Two spray heads 404 are fixedly installed on the surface of the storage cylinder 403 and are connected to the interior of the storage cylinder 403. A circumferential groove is provided inside the storage cylinder 403. A storage bin 405 is fixedly installed on the surface of the discharge pipe 108 and is connected to the interior of the drive mechanism 6. The drive mechanism 6 is also connected to the interior of the storage cylinder 403. A one-way valve is installed on the spray head 404 and a one-way valve is also installed at the connection between the drive mechanism 6 and the storage cylinder 403.

[0073] In practical applications, the embodiments of the present invention, such as Figure 6 As shown, from Figure 6Looking directly at the surface, as the wave extrusion block 201 rotates driven by the drive mechanism 6, its tilted design causes it to continuously reciprocate and compress the cross piston rod 401. As the cross piston rod 401 moves upward, it compresses the storage cylinder 403. Under the action of the one-way valve in the spray head 404, the flocculant and magnetic seed in the storage cylinder 403 are sprayed into the sludge under pressure. When the cross piston rod 401 moves downward, the one-way valve at the connection point between the drive mechanism 6 and the storage cylinder 403 replenishes the flocculant and magnetic seed in the drive mechanism 6 into the storage cylinder 403. The flocculant and magnetic seed in the drive mechanism 6 are then replenished through the storage bin 405, thus achieving automatic spraying of flocculant and magnetic seed, ensuring sufficient contact between the flocculant and magnetic seed and the sludge.

[0074] like Figure 5 As shown, in another preferred embodiment of the present invention, the extrusion mechanism 5 includes a fixed cylinder block 501 fixedly installed on the inner wall of the feeding pipe 108. Two guide ports 502 are opened on the surface of the fixed cylinder block 501. A raised pressure-bearing cylinder 503, which cooperates with the corrugated extrusion block 201 for extrusion, is fixedly installed on the inner wall of the fixed cylinder block 501. A lower support rod 203 and an upper support rod 206 are fixedly installed on the inner wall of the fixed cylinder block 501. The movable rod 204 and the inner wall of the raised pressure-bearing cylinder 503... The wall is slidably connected, and the other end of the compression spring 205 is connected to the inner wall of the protruding pressure cylinder 503. The scraping rope 202 passes through the fixed cylinder block 501 and is slidably connected to the fixed cylinder block 501. The driven bevel gear 302 passes through the fixed cylinder block 501 and is rotatably connected to the fixed cylinder block 501. The first gear 207, the second gear 208 and the driving transmission wheel 304 are all rotatably connected to the inner wall of the fixed cylinder block 501. The storage cylinder 403 is fixedly installed on the inner wall of the fixed cylinder block 501.

[0075] In practical applications, the embodiments of the present invention, such as Figure 5 As shown, when the sludge entering the feeding pipe 108 reaches the fixed cylinder 501, it falls through the guide port 502. The drive mechanism 6 drives the wave extrusion block 201 to rotate and continuously approach and move away from the inner wall of the guide port 502, thereby repeatedly extruding and crushing the falling sludge. At the same time, the protruding shape of the protruding pressure cylinder 503 reduces the falling speed of the sludge, making the sludge more fully extruded.

[0076] like Figure 2 and Figure 3As shown, in another preferred embodiment of the present invention, the driving mechanism 6 includes a driving shaft 601 rotatably connected to the feeding pipe 108. The interior of the driving shaft 601 is connected to the storage cylinder 403 and the storage bin 405 respectively. One end of the driving shaft 601 is connected to an external driving source. An active bevel gear 301 and a wave extrusion block 201 are fixedly installed on the surface of the driving shaft 601. The surface of the driving shaft 601 is rotatably connected to the fixed cylinder block 501 and the storage cylinder 403 respectively. A plurality of stirring rods 602 with different angles are fixedly installed on the other end of the driving shaft 601. A one-way valve is installed at the connection between the driving shaft 601 and the storage cylinder 403.

[0077] In practical applications, when sludge is transported from the discharge pipe 108, as in the embodiments of the present invention... Figure 2 and Figure 3 As shown, at this time, the drive shaft 601 is driven to rotate by an external drive source. The rotation of the drive shaft 601 drives the wave extrusion block 201 to rotate. At the same time, the drive shaft 601 drives the active bevel gear 301 to rotate. At this time, the rotation of the wave extrusion block 201 drives the spraying mechanism 4 to add flocculant and magnetic seeds to the sludge. The wave extrusion block 201, in cooperation with the extrusion mechanism 5, extrudes the sludge. At the same time, the rotation of the active bevel gear 301 drives the scraping rope 202 to rotate, scraping off the accumulated sludge. After the sludge is extruded, it falls into the installation cylinder 101. At this time, the drive shaft 601 drives multiple stirring rods 602 to rotate synchronously. Due to the different angles of the multiple stirring rods 602, the sludge generates turbulence in the installation cylinder 101, increasing the efficiency of mixing.

[0078] like Figure 4 As shown, in another preferred embodiment of the present invention, the device further includes a circulation mechanism 7. The circulation mechanism 7 includes a circulation pipe 702 with both ends fixedly installed on the discharge pipe 108 and the mounting cylinder 101, and the interior of the circulation pipe 702 is connected to the interior of the discharge pipe 108 and the mounting cylinder 101, respectively. A valve switch is installed at both ends of the circulation pipe 702, and a circulation pump 701 is installed on the circulation pipe 702. The circulation pump 701 is fixedly installed on the mounting cylinder 101.

[0079] In practical applications, when sludge falls into the mounting cylinder 101, as in the embodiments of the present invention... Figure 4 As shown, after being stirred by the drive mechanism 6, the sludge in the cylinder 101 can be transported to the discharge pipe 108 for secondary extrusion and mixing through the circulation pipe 702 by the circulation pump 701, thereby improving the flexibility of the device.

[0080] like Figure 1As shown, in another preferred embodiment of the present invention, a protective frame 102 is also fixedly installed on the mounting cylinder 101, a control plate 106 is installed on the surface of the protective frame 102, two opposing magnets 103 are fixedly installed on the surface of the feeding pipe 108, and a cooling fan 107 for heat dissipation is installed on the inner wall of the protective frame 102.

[0081] In practical applications, during the process of the wave-shaped extrusion block 201 extruding the sludge, as in the embodiments of the present invention... Figure 1 As shown, the magnetic field of the magnet 103 is adjusted by the control board 106, which causes eddy currents to be generated inside the metal particles in the sludge, thereby heating the sludge and increasing the mixing reaction rate. The excess heat is then discharged by the cooling fan 107, which improves the service life of the device.

[0082] Example 2

[0083] In embodiments of the present invention, such as Figure 12 As shown, a rapid sludge treatment process implementing the above-mentioned magnetic field eddy current includes the following steps:

[0084] S1: Pump municipal waste sludge, industrial sludge, or livestock manure with a moisture content of 95%-99% into the mixing tank for homogenization and mixing; S2: Start the delivery pump to quantitatively deliver the homogenized sludge to the temporary storage tank; S3: Start the reagent addition device and add reagents to the temporary storage tank at a ratio of 10-30 kg ferrous sulfate and 20-50 kg lime milk per ton of dry sludge, and mix thoroughly; S4: Pump the conditioned sludge into the magnetic field eddy current cell breaking unit. Under the action of the rotating electromagnetic field, the ferromagnetic elements in the sludge generate high-speed eddy currents and micro-arcs. S5: The sludge after cell wall disruption treatment enters the filter press for deep dewatering, resulting in solid sludge cake and filtrate with a water content of ≤40%; S6: The filtrate is tested. If the water quality indicators meet the Class A standard of the "Urban Wastewater Treatment Plant Pollutant Discharge Standard" or the predetermined reuse standard, the liquid is introduced into the collection tank; if it does not meet the standard, it is returned to the mixing tank for further treatment; S8: The solid sludge cake discharged from the filter press can be used as nutrient soil for landscaping, soil conditioner, or raw material for further composting.

[0085] The cavitation effect generated by the magnetic field eddy current cell disruption unit can create local high temperatures exceeding 5000K and microjets exceeding 100m / s, which physically pulverize sludge flocs and cell structures. At the same time, under the synergistic effect of the electromagnetic field, the ferrous sulfate and lime milk generate iron salt flocs and calcium salt precipitates, achieving efficient adsorption and chemical solidification of heavy metal ions, reducing the leaching toxicity of typical heavy metals such as cadmium, lead, and chromium in the treated sludge by more than 60%.

[0086] Sludge samples were taken before and after treatment in this embodiment and tested according to relevant national standards. Key results are compared below (see...). Figure 13 , Figure 14 , Figure 15 , Figure 16 , Figure 17 (and the table below)

[0087] Processing effect data

[0088]

[0089] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0090] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

[0091] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rapid sludge treatment device using magnetic eddy current, comprising a mixing and homogenizing unit, a material conveying unit, a chemical conditioning unit, a temporary storage and conditioning unit, a magnetic eddy current cell disruption unit, and a solid-liquid separation unit connected sequentially via connecting pipes, characterized in that, The mixing and homogenizing unit includes a mixing tank for receiving and mixing raw sludge; The material conveying unit includes a conveying pump connected to the outlet of the mixing tank; The temporary storage and conditioning unit includes a temporary storage tank connected to the outlet of the delivery pump; The chemical conditioning unit includes a reagent addition device connected to the temporary storage tank. The reagent addition device includes at least a first dosing tank for adding ferrous sulfate solution and a second dosing tank for adding lime slurry suspension. The magnetic field eddy current cell breaking unit includes a magnetic field eddy current main cylinder (1), a scraping mechanism (2), a transmission mechanism (3), a jetting mechanism (4), a squeezing mechanism (5), and a driving mechanism (6). Magnetic field eddy current main body cylinder (1): includes a mounting cylinder body (101) provided on the magnetic field eddy current main body cylinder (1), a feeding pipe (108) for sludge flow is fixedly installed on the surface of the mounting cylinder body (101), an inlet (104) communicating with the inside of the feeding pipe (108) is fixedly provided on the surface of the feeding pipe (108), and an outlet (105) communicating with the inside of the mounting cylinder body (101) is provided on the surface of the mounting cylinder body (101). Scraping mechanism (2): includes a corrugated extrusion block (201) installed inside the feed pipe (108) for squeezing sludge. The surface of the corrugated extrusion block (201) is in contact with two scraping ropes (202) that conform to its shape. Each scraping rope (202) is sleeved on a lower support rod (203), a movable rod (204), an upper support rod (206), a first gear (207), and a second gear (208) for support. A compression spring (205) is fixedly installed on the surface of the movable rod (204), and an arc-shaped groove for limiting the scraping rope (202) is provided on the lower support rod (203), the movable rod (204), and the upper support rod (206). Transmission mechanism (3): used to drive the scraping rope (202) to rotate in a cycle; Spraying mechanism (4): used to spray flocculant and magnetic seed into sludge by cooperating with wave extrusion block (201); Extrusion mechanism (5): used in conjunction with wave extrusion block (201) to extrude sludge in circulation; Drive mechanism (6): used to drive the wave extrusion block (201) to rotate; The solid-liquid separation unit includes a filter press connected to the outlet of the magnetic field eddy current cell breaking unit, and the filter press is provided with a solid outlet and a liquid outlet. The extrusion mechanism (5) includes a fixed cylinder block (501) fixedly installed on the inner wall of the feeding pipe (108). The surface of the fixed cylinder block (501) has two guide ports (502). The inner wall of the fixed cylinder block (501) is fixedly installed with a protruding pressure cylinder (503) that cooperates with the corrugated extrusion block (201) for extrusion. The inner wall is fixedly installed with a lower support rod (203) and an upper support rod (206). The movable rod (204) is slidably connected to the inner wall of the raised pressure cylinder (503), and the other end of the compression spring (205) is connected to the inner wall of the raised pressure cylinder (503). The scraping rope (202) passes through the fixed cylinder block (501) and is slidably connected to the fixed cylinder block (501). The driven bevel gear (302) passes through the fixed cylinder block (501) and is rotatably connected to the fixed cylinder block (501). The first gear (207), the second gear (208) and the drive transmission wheel (304) are all rotatably connected to the inner wall of the fixed cylinder block (501). The storage cylinder (403) is fixedly installed on the inner wall of the fixed cylinder block (501). The transmission mechanism (3) includes a driving bevel gear (301) fixedly mounted on the drive mechanism (6). The driving bevel gear (301) meshes with two driven bevel gears (302). Each driven bevel gear (302) is rotatably connected to the extrusion mechanism (5). A bevel gear set (303) is fixedly mounted on the shaft end of each driven bevel gear (302). The bevel gear set (303) is rotatably connected to the extrusion mechanism (5). A driving transmission wheel (304) is coaxially fixedly mounted on the surface of the bevel gear set (303). A transmission belt (305) is fitted on the surface of the gear (207). The other end of the transmission belt (305) is fitted on the driven transmission wheel (306). The driven transmission wheel (306) is coaxially fixedly installed on one end of the first gear (207). The other end of the first gear (207) is coaxially fixedly installed on the upper rotating wheel (307). A timing belt (308) is fitted on the surface of the upper rotating wheel (307). The other end of the timing belt (308) is fitted on the lower rotating wheel (309). The lower rotating wheel (309) is coaxially fixedly installed on one end of the second gear (208).

2. The sludge rapid treatment device based on magnetic field eddy currents according to claim 1, characterized in that, The spraying mechanism (4) includes two cross piston rods (401) in contact with the surface of the wave extrusion block (201). A compression spring (402) is fixedly installed on the surface of each cross piston rod (401). The end of the compression spring (402) away from the cross piston rod (401) is connected to the surface of the storage cylinder (403). The cross piston rod (401) is slidably connected to the inner wall of the storage cylinder (403). Two spray heads (4) are fixedly installed on the surface of the storage cylinder (403). 04), and the nozzle (404) is connected to the interior of the storage cylinder (403). The interior of the storage cylinder (403) is provided with a circumferential groove. The surface of the discharge pipe (108) is fixedly installed with a storage bin (405). The storage bin (405) is connected to the interior of the drive mechanism (6). The drive mechanism (6) is connected to the interior of the storage cylinder (403). A one-way valve is installed on the nozzle (404). A one-way valve is also installed at the connection between the drive mechanism (6) and the storage cylinder (403).

3. The sludge rapid treatment device based on magnetic field eddy currents according to claim 1, characterized in that, The drive mechanism (6) includes a drive shaft (601) rotatably connected to the discharge pipe (108). The interior of the drive shaft (601) is connected to the storage cylinder (403) and the storage bin (405) respectively. One end of the drive shaft (601) is connected to an external drive source. The surface of the drive shaft (601) is fixedly mounted with an active bevel gear (301) and a wave extrusion block (201). The surface of the drive shaft (601) is rotatably connected to the fixed cylinder block (501) and the storage cylinder (403) respectively. The other end of the drive shaft (601) is fixedly mounted with multiple stirring rods (602) at different angles. A one-way valve is installed at the connection between the drive shaft (601) and the storage cylinder (403).

4. The sludge rapid treatment device based on magnetic field eddy currents according to claim 1, characterized in that, The device also includes a circulation mechanism (7), which includes a circulation pipe (702) with both ends fixedly installed on the discharge pipe (108) and the mounting cylinder (101), and the interior of the circulation pipe (702) is connected to the interior of the discharge pipe (108) and the mounting cylinder (101), respectively. Both ends of the circulation pipe (702) are equipped with valve switches, and a circulation pump (701) is installed on the circulation pipe (702), which is fixedly installed on the mounting cylinder (101).

5. The sludge rapid treatment device based on magnetic field eddy currents according to claim 1, characterized in that, A protective frame (102) is also fixedly installed on the mounting cylinder (101). A control board (106) is installed on the surface of the protective frame (102). Two opposing magnets (103) are fixedly installed on the surface of the discharge pipe (108). A cooling fan (107) for heat dissipation is installed on the inner wall of the protective frame (102).

6. A process for a rapid sludge treatment device employing any one of the magnetic field eddy currents as described in claims 1-5, characterized in that, Includes the following steps: S1: Municipal waste sludge, industrial sludge or poultry and livestock manure with a moisture content of 95%-99% are pumped to the mixing tank for homogenization and mixing. S2: Start the transfer pump to quantitatively transfer the homogenized sludge to the temporary storage tank; S3: Start the reagent addition device, add the reagent to the temporary storage tank at a ratio of 10-30 kg ferrous sulfate and 20-50 kg lime slurry per ton of dry mud, and mix thoroughly. S4: The conditioned sludge is pumped into the magnetic field eddy current cell breaking unit. Under the action of the rotating electromagnetic field, the ferromagnetic elements in the sludge generate high-speed eddy currents, micro-arcs and cavitation effects to complete the cell breaking of microorganisms, inactivation of pathogens and stabilization of heavy metals. S5: The sludge after the cell wall breaking treatment enters the filter press for deep dewatering to obtain solid sludge cake and filtrate with a moisture content of ≤40%; S6: The filtrate is tested. If the water quality indicators meet the Class A standard of the "Discharge Standard of Pollutants for Urban Wastewater Treatment Plants" or the predetermined reuse standard, the liquid is introduced into the collection tank; if it does not meet the standard, it is returned to the mixing tank for further treatment. S7: The solid mud cake discharged from the filter press can be used as nutrient soil for landscaping, soil conditioner, or raw material for further composting.

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