Efficient synergistic sludge treatment device

Abstract

The invention relates to an efficient synergistic sludge treatment device, and relates to the technical field of sludge treatment.The sludge treatment device comprises a sludge treatment line, and the sludge treatment line comprises a sludge feeding mechanism, a sludge dewatering mechanism, a relay conveying mechanism, a drying mechanism and a sludge discharging mechanism which are sequentially communicated; a heat medium supply mechanism; an air supply mechanism; the air preheating mechanism, the heating medium supply mechanism, the drying mechanism and the air preheating mechanism are sequentially communicated, and the heating medium supply mechanism is used for outputting a heating medium and enabling the heating medium to sequentially flow through the drying mechanism and the air preheating mechanism; the air supply mechanism, the air preheating mechanism and the drying mechanism are sequentially communicated, and the air supply mechanism is used for outputting air and enabling the air to sequentially flow through the air preheating mechanism and the drying mechanism; the air preheating mechanism is used for conducting heat exchange between a heating medium and air. And the tail gas purification mechanism communicates with the drying mechanism. The heat energy utilization rate in the sludge treatment process can be increased, and the operation energy consumption can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of sludge treatment, and in particular to a highly efficient synergistic sludge treatment device. Background Technology

[0002] With the acceleration of urbanization and the rapid development of industrial production, the output of sludge from urban wastewater treatment plants is increasing year by year. Sludge contains a large amount of organic matter, pathogens, heavy metals, and other harmful substances. If not properly treated, it will pose a serious threat to the ecological environment. Currently, the reduction, harmlessness, and resource utilization of sludge have become research hotspots in the field of environmental protection. Among these methods, incineration or landfill after dewatering and drying are the main pathways for sludge disposal.

[0003] Currently, existing sludge treatment equipment mainly includes dewatering equipment, transfer equipment, and drying equipment. During sludge treatment, dewatering equipment often uses belt filter presses or centrifugal dewatering machines to reduce the moisture content of the sludge. Subsequently, transfer equipment typically uses loaders or open conveyor belts to transport the dewatered sludge to the drying equipment. Afterward, the drying equipment often uses fluidized bed dryers to heat and dry the sludge, causing the moisture within the sludge to evaporate, thus achieving the drying process. Therefore, under the action of sludge treatment equipment, the moisture content of the sludge can be reduced, completing the initial volume reduction treatment of the sludge.

[0004] Regarding the aforementioned technologies, in sludge treatment devices, the drying equipment often requires external equipment to provide a heating medium, such as steam or thermal oil, during the sludge drying process. However, after the heating medium heats and dries the sludge, the water evaporated from the sludge by absorbing heat is converted into high-temperature water vapor, which is then directly discharged as exhaust gas after subsequent end-of-pipe purification. This means that a large amount of the heat energy input into the drying equipment is transferred to the exhaust gas and directly dissipated into the environment with the exhaust gas emission, resulting in low thermal energy utilization of existing sludge treatment devices and consequently high operating energy costs. Summary of the Invention

[0005] The purpose of this application is to provide a high-efficiency synergistic sludge treatment device, which aims to improve the thermal energy utilization rate and reduce operating energy consumption during the sludge treatment process.

[0006] The high-efficiency synergistic sludge treatment device provided in this application adopts the following technical solution: A high-efficiency synergistic sludge treatment device includes a sludge treatment line comprising a sludge feeding mechanism, a sludge dewatering mechanism, a relay conveying mechanism, a drying mechanism, and a sludge discharging mechanism connected in sequence. The sludge treatment line is used to transport sludge and dewater it. A heat medium supply mechanism is used to generate and output a heating medium. An air supply mechanism is used to output air. An air preheating mechanism is connected in sequence to the heat medium supply mechanism, the drying mechanism, and the air preheating mechanism. The heat medium supply mechanism outputs the heating medium, which flows sequentially through the drying mechanism and the air preheating mechanism. The air supply mechanism outputs air, which flows sequentially through the air preheating mechanism and the drying mechanism. The air preheating mechanism is used to exchange heat between the heating medium and the air. An exhaust gas purification mechanism is connected to the drying mechanism and collects and purifies the air passing through the drying mechanism.

[0007] By adopting the above technical solution, the sludge treatment line achieves full-process treatment of sludge from feeding, initial dewatering and volume reduction, intermediate conveying, deep heating and drying to final discharge through the sequential connection and coordinated operation of the sludge feeding mechanism, sludge dewatering mechanism, relay conveying mechanism, drying mechanism, and sludge discharging mechanism, thereby meeting the requirements of sludge treatment equipment. Specifically, most of the free water is removed from the sludge at the dewatering mechanism, reducing the load on the subsequent drying mechanism; the relay conveying mechanism ensures smooth connection between upstream and downstream processes and material buffering; and the drying mechanism completes the deep volume reduction of the sludge.

[0008] Based on this, the heating medium supplied by the heat transfer medium enters the drying unit to release heat and dry the sludge. As the heating medium flows through the drying unit, it undergoes a phase change, releasing latent heat and transforming into a liquid state before flowing into the air preheating unit to release sensible heat. Simultaneously, air output from the air supply unit also enters the air preheating unit. Inside the air preheating unit, the heating medium flowing out of the drying unit exchanges heat with the air input from the air supply unit. This process recovers the sensible heat of the heating medium, preheating the ambient temperature air, which then enters the drying unit.

[0009] This design not only reduces the impact of air entering the drying mechanism on the internal temperature field, but also allows hot air to have a stronger moisture-carrying capacity, thereby improving the sludge drying efficiency.

[0010] Based on this, after the hot air passes through the drying unit, it carries the moisture evaporated from the sludge to form exhaust gas. This exhaust gas is transported to the exhaust gas purification unit connected to the drying unit. The exhaust gas purification unit purifies the collected exhaust gas to remove pollutants from it.

[0011] Therefore, by combining the sludge treatment process, the heat medium circulation process, and the air conveying process, this device can achieve sludge reduction and exhaust gas purification while realizing the cascade recovery and utilization of heat energy, thereby improving the heat energy utilization rate in the sludge treatment process and reducing operating energy consumption.

[0012] Optionally, the air preheating mechanism is connected to the heat medium supply mechanism, and the air preheating mechanism is used to transport the heat exchanged heating medium to the heat medium supply mechanism.

[0013] By adopting the above technical solution, a closed-loop heating medium circulation loop is formed between the heating medium supply mechanism, the drying mechanism, and the air preheating mechanism. In this circulation loop, although the heating medium undergoes two heat exchanges (releasing latent heat in the drying mechanism and sensible heat in the air preheating mechanism), its temperature is usually still higher than the ambient temperature. This allows the heating medium with a certain residual heat to be returned to the heating medium supply mechanism for reheating. Compared to heating a completely new, cold heating medium, this design reduces the fuel consumption required by the heating medium supply mechanism to heat the medium to its working state. Therefore, this design not only achieves closed-loop recycling of the heating medium, avoiding resource waste, but also fully utilizes the residual heat of the returned heating medium, thereby reducing the operating energy consumption and cost of the sludge treatment device.

[0014] Optionally, the heat medium supply mechanism includes a steam boiler and a steam pipe, one end of which is connected to the steam boiler and the other end of which is connected to the drying mechanism; the exhaust gas purification mechanism is connected to the steam boiler and is used to introduce purified air into the steam boiler.

[0015] By adopting the above technical solution, the heat medium supply mechanism, through the installation of a steam boiler, can provide a stable saturated steam as the heating medium for the drying mechanism. Based on this, the exhaust gas purification mechanism is connected to the steam boiler, and the purified exhaust gas is introduced into the steam boiler. Although the exhaust gas is purified, trace amounts of odor molecules may still remain, and this exhaust gas typically contains a certain amount of oxygen and residual heat. At this point, utilizing the extremely high combustion temperature inside the steam boiler's furnace, the residual odor molecules in the exhaust gas can be completely oxidized and decomposed, while the exhaust gas also participates in combustion as combustion air. Therefore, this design not only achieves deep deodorization of the exhaust gas, achieving zero emissions, but also utilizes the residual heat and oxygen in the exhaust gas, reducing the steam boiler's consumption of fresh, cold air from the outside, thereby further improving the environmental friendliness and thermal efficiency of the sludge treatment device.

[0016] Optionally, the relay conveying mechanism includes a sludge bin, a screw feeder, and a relay pump. The screw feeder and the sludge dewatering mechanism are arranged vertically at intervals. The sludge bin is located vertically between the screw feeder and the sludge dewatering mechanism. The bottom of the sludge bin is connected to the screw feeder. The screw feeder, the relay pump, and the drying mechanism are connected in sequence. The sludge bin is located directly below the sludge discharge port of the sludge dewatering mechanism. A detachable sealing cover is provided on the top of the sludge bin to seal it.

[0017] By adopting the above technical solution, the relay conveying mechanism, through the setting of the sludge silo, which serves as an intermediate container, can receive and temporarily store the sludge discharged from the sludge dewatering unit. The sludge is then stably and continuously conveyed to the drying unit through the screw feeder at the bottom in conjunction with the relay pump. This solves the contradiction between the potential fluctuations in the front-end dewatering output and the continuous stability required for the back-end drying feed, and achieves buffering between material conveying processes.

[0018] Based on this, a sealing cover is used to seal the sludge silo. When sludge needs to be transported into the sludge silo, the sealing cover is opened; otherwise, the sealing cover closes the sludge silo. This transforms the sludge storage and transfer environment from an open one to a completely closed one.

[0019] This not only ensures the smooth and continuous operation of the entire sludge treatment process, but also effectively prevents the large amount of accumulated wet sludge from emitting odors and polluting the working environment during temporary storage. It also prevents foreign objects from falling into the silo and damaging the subsequent screw feeder or relay pump.

[0020] Optionally, the relay conveying mechanism further includes a discharge pipe located between the sludge bin and the sludge dewatering mechanism. The upper end of the discharge pipe is connected to the sludge discharge port of the sludge dewatering mechanism, and the lower end is connected to the sealing cover. The lower end of the discharge pipe is also connected to the sludge bin.

[0021] By adopting the above technical solution, the sludge cake discharged from the sludge dewatering unit is designed so that it automatically slides into the sludge bin under gravity. This design allows for continuous sludge transport between the sludge dewatering unit and the intermediate conveying mechanism, and the sludge remains in a closed environment throughout the transport process. This prevents splashing and odor diffusion into the surrounding environment that may occur during the sludge's fall.

[0022] Optionally, the sludge dewatering mechanism includes a dosing machine, a mixing tank, and a screw press sludge dewatering machine. The sludge feeding mechanism, the mixing tank, the screw press sludge dewatering machine, and the relay conveying mechanism are connected in sequence. The dosing machine is connected to the mixing tank, and the mixing tank is equipped with a stirring component for stirring the sludge.

[0023] By adopting the above technical solution, the screw press sludge dewatering machine, with its designed dewatering mechanism, can mechanically dewater sludge. Before the sludge enters the screw press sludge dewatering machine, it is chemically conditioned using a dosing machine and a mixing tank equipped with a stirring component, ensuring thorough mixing and reaction between the sludge and the chemical solution. During this process, the chemical solution (flocculator) neutralizes the surface charge of the sludge particles and performs adsorption bridging, causing the fine suspended particles in the sludge to aggregate into larger and structurally stable dense flocs (flocs). This process disrupts the original colloidal stability of the sludge, releasing the bound water that is difficult to separate between sludge particles and converting it into easily separable free water, thereby improving the dewatering performance of the sludge.

[0024] With the cooperation of the dosing machine, mixing tank and screw press sludge dewatering machine, the formation of dense flocs makes it easier for the sludge to achieve solid-liquid separation during the screw press process. This improves the dewatering efficiency of the screw press sludge dewatering machine and reduces the water content of the sludge, thereby reducing the evaporation load of the subsequent drying mechanism and reducing the energy consumption of the drying mechanism.

[0025] Optionally, a drain valve is provided between the air preheating mechanism and the drying mechanism. One end of the drain valve is connected to the drying mechanism, and the other end is connected to the air preheating mechanism. The drain valve is used to control the flow of heating medium from the drying mechanism into the air preheating mechanism.

[0026] By adopting the above technical solution, the steam trap functions as a vapor barrier and drainer. It ensures that only the heating medium (i.e., condensate) that has released latent heat and condensed into a liquid state within the drying mechanism can pass through and flow into the air preheating mechanism. The uncondensed gaseous heating medium (i.e., steam) is retained within the drying mechanism to continue phase change heat transfer. Therefore, this design ensures that high-grade latent heat is fully utilized for sludge drying, while the medium entering the air preheating mechanism is primarily a liquid medium containing sensible heat. This achieves precise, tiered utilization of heat energy based on the characteristics of different forms of heat media, improving heat exchange efficiency.

[0027] Optionally, the air preheating mechanism includes a heat exchanger, a heat medium inlet pipe, a heat medium outlet pipe, an air inlet pipe, and an air outlet pipe, all of which are connected to the heat exchanger. The end of the heat medium inlet pipe away from the heat exchanger along its length is connected to the end of the steam trap away from the drying mechanism. The end of the air inlet pipe away from the heat exchanger along its length is connected to the air supply mechanism. The end of the air outlet pipe away from the heat exchanger along its length is connected to the drying mechanism.

[0028] By adopting the above technical solution and through the structural design of the air preheating mechanism, the heating medium enters the heat exchanger through the heat medium inlet pipe, and ambient temperature air enters the heat exchanger through the air inlet pipe. The two exchange heat non-contactly within the heat exchanger. The air absorbs heat, heats up, and is transported to the drying mechanism through the air outlet pipe, while the condensate releases heat, cools down, and flows back through the heat medium outlet pipe. Therefore, this design simply and efficiently transfers the waste heat of the heating medium to the air, completing heat energy recovery and carrier gas preheating, and avoiding the problem of a sudden drop in internal temperature caused by low-temperature air directly entering the drying mechanism.

[0029] Optionally, it also includes a return material mixing mechanism, which includes a mixing tank and a dry material conveying assembly. The relay conveying mechanism is connected to the mixing tank. One end of the dry material conveying assembly is connected to the sludge feeding mechanism, and the other end is connected to the mixing tank. An agitator is installed inside the mixing tank. A secondary pumping assembly is also installed on the mixing tank. The mixing tank, the secondary pumping assembly, and the drying mechanism are connected in sequence. The secondary pumping assembly is used to pump the mixed sludge into the drying mechanism.

[0030] By adopting the above technical solution, a dry mud remixing process is introduced by setting up a mixing tank between the drying mechanism and the relay conveying mechanism.

[0031] In practice, the intermediate conveying mechanism transports the high-moisture-content wet sludge from the front end to the mixing tank; simultaneously, the dry material conveying component intercepts a portion of the high-temperature dry sludge discharged from the rear sludge feeding mechanism and transports it to the mixing tank. Under the action of the agitator, the high-temperature dry sludge and wet sludge are thoroughly mixed and stirred.

[0032] In this process, the water absorption properties and skeletal structure of the dry sludge are utilized to rapidly reduce the overall moisture content of the mixed sludge. Simultaneously, the sensible heat of the high-temperature dry sludge preheats the wet sludge, transforming its physical properties from a highly viscous paste to a loose or hard paste with lower viscosity. Subsequently, the sludge with improved physical properties is pumped into the drying unit via a secondary pumping assembly.

[0033] Therefore, under this design, the mixed sludge has already crossed the high viscosity zone in the early stage of drying before entering the drying mechanism, effectively avoiding the risk of sludge adhering to the inner wall or blades of the drying mechanism (i.e., wall adhesion), thus keeping the heat exchange surface clean and ensuring the heat transfer efficiency and long-term stable operation of the drying mechanism.

[0034] Optionally, a heating jacket is provided on the outside of the mixing tank, and a first pipe and a second pipe are connected to the heating jacket. The drying mechanism, the first pipe, the heating jacket, the second pipe and the exhaust gas purification mechanism are connected in sequence.

[0035] By adopting the above technical solution, the high-temperature, humid exhaust gas discharged from the drying mechanism is used as a heat source under the heating jacket design. Before entering the exhaust gas purification mechanism, the exhaust gas is first introduced into the heating jacket outside the mixing tank through the first pipe. When the exhaust gas flows through the heating jacket, it releases sensible heat and part of the latent heat through wall heat exchange, providing contact heating and insulation for the sludge being mixed and stirred inside the mixing tank. This further taps into and recovers the low-grade heat energy in the exhaust gas, effectively preheating the mixed sludge to be dried and increasing the feed temperature, while also helping to maintain the temperature environment inside the mixing tank and preventing heat loss. This achieves deep, tiered utilization of heat energy and further reduces the operating energy consumption of the sludge treatment device.

[0036] In summary, this application includes at least one of the following beneficial technical effects: 1. This application combines sludge treatment process, heat medium circulation process and air conveying process to achieve sludge reduction treatment and exhaust gas purification, while realizing the cascade recovery and utilization of heat energy, thereby improving the heat energy utilization rate in the sludge treatment process and reducing operating energy consumption.

[0037] 2. This application effectively improves the problem of unorganized emission of odor from sludge and environmental pollution by sealing and transporting sludge; at the same time, the exhaust gas is purified and returned to the steam boiler for high-temperature co-firing, which not only completely decomposes the residual odor to achieve zero emissions, but also uses the oxygen in the exhaust gas to assist combustion, reducing the boiler's consumption of fresh air.

[0038] 3. This application introduces a dry sludge remixing process through a remixing mechanism, which effectively alleviates the wall-sticking phenomenon of high-viscosity sludge in the early stage of drying, improves the fluidity and heat transfer of the feed sludge, and keeps the heat exchange surface of the drying mechanism clean, thereby ensuring that the drying mechanism can operate continuously and efficiently for a long time. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall structure of the sludge treatment device according to Embodiment 1 of this application.

[0040] Figure 2 This is a schematic diagram of the overall structure of the sludge treatment line in Embodiment 1 of this application.

[0041] Figure 3 This is a schematic diagram of the overall structure of the heating medium circulation line in Embodiment 1 of this application.

[0042] Figure 4 This is a schematic diagram of the overall structure of the air delivery line in Embodiment 1 of this application.

[0043] Figure 5 This is a schematic diagram of the overall structure of the sludge feeding mechanism in Embodiment 1 of this application.

[0044] Figure 6 This is a schematic diagram of the overall structure of the sludge dewatering mechanism in Embodiment 1 of this application.

[0045] Figure 7 This is a schematic diagram of the overall structure of the relay conveying mechanism in Embodiment 1 of this application.

[0046] Figure 8 This is a schematic diagram of the overall structure of the drying mechanism, sludge feeding mechanism, heating medium circulation line and air conveying line in Embodiment 1 of this application.

[0047] Figure 9 This is a schematic diagram of the overall structure of the sludge treatment device according to Embodiment 2 of this application.

[0048] Figure 10 This is a schematic diagram of the overall structure of the return mixing mechanism in Embodiment 2 of this application.

[0049] In the diagram, 1. Sludge feeding mechanism; 11. Sludge pump; 12. Sludge inlet pipe; 2. Sludge dewatering mechanism; 21. Dosing machine; 211. Dosing pipe; 212. Dosing pump; 22. Mixing tank; 23. Screw press sludge dewatering machine; 231. Drainage pipe; 3. Intermediate conveying mechanism; 31. Sludge bin; 32. Screw feeder; 33. Intermediate pump; 34. Intermediate pipeline; 4. Drying mechanism; 5. Sludge discharge mechanism; 6. Heat medium supply mechanism; 61. Steam boiler; 62. Steam pipeline; 63. Steam regulating valve; 7. Air preheater. Thermal components; 71. Heat exchanger; 72. Heat medium inlet pipe; 73. Heat medium outlet pipe; 74. Air inlet pipe; 75. Air outlet pipe; 8. Air supply mechanism; 9. Exhaust gas purification mechanism; 91. Scrubber; 92. Connecting pipe; 921. First pipe; 922. Second pipe; 93. Return air pipe; 94. Return fan; 10. Return material mixing mechanism; 101. Mixing tank; 102. Dry material conveying assembly; 103. Secondary pumping assembly; 100. Sludge treatment line; 200. Heating medium circulation line; 300. Air conveying line. Detailed Implementation

[0050] The following is in conjunction with the appendix Figure 1 -Appendix Figure 10 This application will be described in further detail below.

[0051] Example 1: A high-efficiency synergistic sludge treatment device, referring to Figure 1 and Figure 2 The system includes a sludge feeding mechanism 1, a sludge dewatering mechanism 2, a relay conveying mechanism 3, a drying mechanism 4, and a sludge discharging mechanism 5. The sludge feeding mechanism 1, the sludge dewatering mechanism 2, the relay conveying mechanism 3, the drying mechanism 4, and the sludge discharging mechanism 5 are connected in sequence to form a sludge treatment line 100.

[0052] Reference Figure 1 and Figure 3 The sludge treatment device also includes a heat medium supply mechanism 6 and an air preheating mechanism 7. The heat medium supply mechanism 6, the drying mechanism 4 and the air preheating mechanism 7 are connected end to end to form a heating medium circulation line 200.

[0053] Reference Figure 1 and Figure 4 The sludge treatment device includes an air supply mechanism 8 and an exhaust gas purification mechanism 9. The air supply mechanism 8, the air preheating mechanism 7, the drying mechanism 4, the exhaust gas purification mechanism 9 and the heat medium supply mechanism 6 are connected in sequence to form an air conveying line 300.

[0054] Reference Figure 1 With the coordinated operation of the sludge treatment line 100, the heating medium circulation line 200, and the air conveying line 300, the sludge treatment line 100 sequentially processes the sludge through feeding, mechanical dewatering, conveying, heating and drying, and discharging, thereby achieving sludge treatment. During this process, the heating medium circulation line 200 ensures that the heating medium is output from the heat medium supply mechanism 6, flows sequentially through the drying mechanism 4 and the air preheating mechanism 7, and then returns to the heat medium supply mechanism 6. Simultaneously, the air conveying line 300 ensures that air is output from the air supply mechanism 8, flows sequentially through the air preheating mechanism 7, the drying mechanism 4, and the exhaust gas purification mechanism 9, and then is conveyed to the heat medium supply mechanism 6.

[0055] With this design, the waste heat released by the heating medium can preheat the air entering the drying unit 4, thereby preventing low-temperature air from directly entering the drying unit 4 and impacting its temperature. This ensures the drying efficiency of the drying unit 4 and reduces drying energy consumption. Simultaneously, the exhaust gas generated by the drying unit 4 is purified and then transported to the heat medium supply unit 6 for high-temperature co-combustion, thus thoroughly decomposing the odor in the exhaust gas while reducing the consumption of external combustion air by the heat medium supply unit 6.

[0056] Reference Figure 2 and Figure 5 The sludge feeding mechanism 1 includes a sludge pump 11 and a sludge inlet pipe 12. One end of the sludge inlet pipe 12 is connected to the sludge pump 11, and the other end extends to be connected to the sludge dewatering mechanism 2. In this embodiment, the sludge pump 11 can be a screw pump or a submersible pump.

[0057] This enables the sludge pump 11 to extract the raw sludge to be treated from the sludge tank and continuously and stably transport it to the subsequent sludge dewatering unit 2 through the sludge inlet pipe 12, providing a raw material guarantee for the continuous operation of the entire sludge treatment line 100.

[0058] Reference Figure 2 and Figure 6The sludge dewatering mechanism 2 includes a dosing machine 21 and a mixing tank 22. The dosing machine 21 is equipped with a dosing pipe 211, one end of which is connected to the dosing machine 21, and the other end is connected to the sludge inlet pipe 12. A dosing pump 212 is also installed on the dosing pipe 211. One end of the sludge inlet pipe 12 is connected to the mixing tank 22, and a stirring assembly is installed inside the mixing tank 22. In this embodiment, the dosing machine 21 is an automatic dosing device or a liquid tank; the stirring assembly is a stirring paddle driven by a stirring motor or a frame-type stirrer.

[0059] Reference Figure 2 and Figure 6 The sludge dewatering mechanism 2 also includes a screw press sludge dewatering machine 23. The mixing tank 22 is connected to the sludge inlet of the screw press sludge dewatering machine 23 through a pipe. A drain pipe 231 is provided below the screw press sludge dewatering machine 23. One end of the drain pipe 231 is connected to the outlet of the screw press sludge dewatering machine 23, and the other end is connected to the sewer.

[0060] In the design of the sludge dewatering mechanism 2, when sludge treatment is required, the dosing pump 212 injects flocculant into the sludge pipe 12 according to a set ratio, and finally discharges it into the mixing tank 22. Subsequently, the stirring component in the mixing tank 22 is activated to stir the sludge and the chemical solution, so that the sludge and the chemical solution entering the mixing tank 22 are fully mixed and reacted, causing the sludge particles to agglomerate and form dense flocs. After the mixed sludge is discharged from the mixing tank 22 into the screw press sludge dewatering machine 23, the sludge is subjected to continuously increasing extrusion pressure in the screw press sludge dewatering machine 23, thereby causing the water in the sludge to be squeezed out and discharged through the drain pipe 231, while the solid matter in the sludge is pressed into sludge cakes and finally discharged from the sludge discharge port. In this embodiment, the ratio of sludge to chemical solution is 100:3.

[0061] Therefore, under the action of the sludge dewatering unit 2, the sludge can be initially reduced in volume and dewatered, thereby reducing the working pressure of the subsequent drying unit 4.

[0062] Reference Figure 2 and Figure 7 The relay conveying mechanism 3 includes a sludge bin 31, a screw feeder 32, and a relay pump 33. The sludge bin 31 is vertically arranged and located directly below the sludge discharge port of the screw press sludge dewatering machine 23. The screw feeder 32 is located directly below the sludge bin 31, and the discharge port at the bottom of the sludge bin 31 is connected to the feed port of the screw feeder 32. The discharge port of the screw feeder 32 is connected to the feed port of the relay pump 33 through a pipe. Furthermore, a relay pipe 34 is provided between the relay pump 33 and the drying mechanism 4. One end of the relay pipe 34 is connected to the discharge port of the relay pump 33, and the other end is connected to the sludge inlet of the drying mechanism 4. In this embodiment, the screw feeder 32 is a shaftless screw conveyor or a shafted screw conveyor; the relay pump 33 is a sludge screw pump or a single screw pump.

[0063] Reference Figure 7 In this embodiment, a sealing cover is detachably provided on the sludge bin 31, which seals the sludge discharge bin. Specifically, the sealing cover is rotatably connected to or snapped into the sludge bin 31.

[0064] The sealing cover creates a relatively enclosed storage space inside the sludge bin 31. During normal operation, the sealing cover is kept closed, effectively preventing the sludge accumulated in the sludge bin 31 from emitting foul odors and polluting the surrounding environment. It also prevents external impurities from entering the sludge. The cover is only opened when maintenance or manual replenishment is required.

[0065] In another embodiment, a discharge pipe is provided between the sludge bin 31 and the screw press sludge dewatering machine 23. The discharge pipe is vertically arranged, and the upper end of the discharge pipe is connected to the sludge discharge port of the screw press sludge dewatering machine 23, while the lower end is connected to the sealing cover and communicates with the sludge bin 31.

[0066] With the feeding pipe configuration, the sludge cake discharged from the screw press sludge dewatering machine 23 can slide directly into the sludge bin 31 through the fully enclosed feeding pipe. This not only avoids the sludge from splashing or emitting odors when it comes into contact with the outside air during the falling process, but also achieves a seamless hard connection from the dewatering process to the storage process. This ensures that the sludge can be continuously transported from the front end to the sludge bin 31, realizing full automation and continuity of the sludge treatment process.

[0067] Reference Figure 2 and Figure 8 The drying mechanism 4 adopts a paddle dryer, which is horizontally set and is equipped with a mud inlet, a mud outlet, a heat medium inlet, a heat medium outlet, an air inlet, and an exhaust gas outlet.

[0068] Reference Figure 7 and Figure 8 One end of the relay pipe 34 is connected to the sludge inlet of the drying mechanism 4, the sludge outlet of the drying mechanism 4 is located at the bottom of the end of the drying mechanism 4, and the sludge outlet of the drying mechanism 4 is connected to the feed end of the sludge feeding mechanism 5.

[0069] With this design, the relay pipe 34 can input sludge into the drying mechanism 4, and the sludge outlet of the drying mechanism 4 can discharge the sludge after it has been processed by the drying mechanism 4, thereby realizing the feeding and discharging of sludge in the drying mechanism 4.

[0070] Reference Figure 2 and Figure 8 The sludge feeding mechanism 5 adopts a belt conveyor or a shaftless screw conveyor. The sludge feeding mechanism 5 is located below the drying mechanism 4, and the feed end of the sludge feeding mechanism 5 receives the dry sludge discharged from the sludge outlet of the drying mechanism 4 and transports the dry sludge outward.

[0071] Reference Figure 3 and Figure 8 The heat supply mechanism 6 includes a steam boiler 61, a steam pipe 62, and a steam regulating valve 63. One end of the steam pipe 62 is connected to the steam boiler 61, and the other end is connected to the heat inlet of the drying mechanism 4. The steam regulating valve 63 is installed on the steam pipe 62.

[0072] The heat supply mechanism 6 can provide saturated steam with stable pressure through the steam boiler 61, and precisely control the steam flow and pressure entering the drying mechanism 4 through the steam regulating valve 63, so as to ensure that the heating temperature in the drying mechanism 4 is maintained within the optimal range, thus providing a continuous and stable heat source for the drying mechanism 4.

[0073] Reference Figure 3 and Figure 8 The air preheating mechanism 7 includes a heat exchanger 71, which is connected to a heat medium inlet pipe 72 and a heat medium outlet pipe 73. The end of the heat medium inlet pipe 72 away from the heat exchanger 71 is connected to the heat medium outlet of the drying mechanism 4, and the end of the heat medium outlet pipe 73 away from the heat exchanger 71 is connected to the steam boiler 61.

[0074] With the design of the air preheating mechanism 7, the heat exchanged heating medium discharged from the drying mechanism 4 enters the heat exchanger 71 through the heat medium inlet pipe 72. Under the action of the heat exchanger 71, the heating medium exchanges heat with the air in the heat exchanger 71. The heat exchanged and cooled heating medium then flows back to the steam boiler 61 through the heat medium outlet pipe 73 for reheating and reuse. This realizes the cascade recovery of heat energy and the recycling of the heating medium, which can reduce the overall energy consumption and cost.

[0075] In this embodiment, a steam trap is provided between the heat medium inlet pipe 72 and the heat medium outlet of the drying mechanism 4. One end of the steam trap is connected to the heat medium inlet pipe 72, and the other end is connected to the heat medium outlet of the drying mechanism 4. Based on the steam trap's inherent steam-blocking and drainage characteristics, the condensate generated after the release of latent heat in the drying mechanism 4 can be smoothly discharged into the heat medium inlet pipe 72 and introduced into the heat exchanger 71 under the control of the steam trap. At the same time, it blocks steam leakage, ensuring that only high-temperature condensate participates in secondary heat exchange, thereby improving heat exchange efficiency.

[0076] Reference Figure 8 In this embodiment, the paddles inside the paddle dryer are hollow, and a heating medium needs to be introduced into the paddles. The paddle dryer is also equipped with an outer jacket, which also needs to be circulated with a heating medium. Therefore, the drying mechanism 4 has two heating medium inlets and two heating medium outlets, used to allow the heating medium to enter and exit the paddles inside the dryer and the heating medium to enter and exit the outer jacket of the dryer, respectively.

[0077] This dual heating structure increases the heat exchange area per unit volume, allowing the sludge to continuously tumble and renew the heat exchange surface under the stirring action of the blades. At the same time, it receives dual heat radiation and conduction from the inside and outside of the hollow blades, thereby reducing the sludge moisture content from 80% to 35%-40%.

[0078] Reference Figure 4 and Figure 8 The air supply mechanism 8 uses a blower. The heat exchanger 71 is also connected to an air inlet pipe 74 and an air outlet pipe 75. The end of the air inlet pipe 74 away from the heat exchanger 71 is connected to the air supply mechanism 8, and the end of the air outlet pipe 75 away from the heat exchanger 71 is connected to the air inlet of the drying mechanism 4.

[0079] Therefore, with the cooperation of the air supply mechanism 8 and the air preheating mechanism 7, the blower 81 can continuously supply ambient temperature air into the heat exchanger 71. The ambient temperature air absorbs the residual heat from the heating medium in the heat exchanger 71 and then heats up, forming hot air which is then introduced into the drying mechanism 4. This avoids the sudden drop in internal temperature caused by low-temperature air directly entering the drying mechanism 4. Simultaneously, the preheated hot air, as a carrier gas, has a stronger moisture-carrying capacity, thus ensuring the sludge drying efficiency.

[0080] Reference Figure 4 and Figure 8 The exhaust gas purification mechanism 9 includes a scrubbing tower 91 and a connecting pipe 92. One end of the connecting pipe 92 is connected to the exhaust gas outlet of the drying mechanism 4, and the other end is connected to the air inlet of the scrubbing tower 91.

[0081] Reference Figure 4 and Figure 8 The exhaust gas purification mechanism 9 also includes a return gas pipe 93, one end of which is connected to the outlet of the scrubbing tower 91, and the other end is connected to the steam boiler 61. Furthermore, a return fan 94 is also installed on the return gas pipe 93.

[0082] With the exhaust gas purification mechanism 9 in place, the hot, humid exhaust gas carrying dust and odors discharged from the drying mechanism 4 enters the scrubbing tower 91 through the connecting pipe 92. After being treated by the clean water spray inside the scrubbing tower 91, the dust particles in the exhaust gas are removed and some of the odor gases are dissolved. Subsequently, the purified clean gas is extracted by the return fan 94 and transported to the combustion chamber of the steam boiler 61 as combustion air through the return gas pipe 93. This not only avoids the environmental pollution caused by the direct emission of the dried exhaust gas, but also utilizes the residual heat and oxygen in the exhaust gas to participate in combustion, completely decomposing the residual odor molecules under the high temperature environment of the boiler, achieving zero emissions and resource utilization of the exhaust gas.

[0083] In this embodiment, the scrubbing tower 91 is equipped with multiple processing units. The exhaust gas first passes through the lower spray zone for cooling and scrubbing, removing dust and some soluble odors. At this point, the exhaust gas temperature decreases and approaches saturation humidity. Subsequently, the gas rises and flows through a demisting and dehydrating layer (such as a high-efficiency wire mesh demister or a baffle plate demister) located at the top of the scrubbing tower 91. This demisting and dehydrating layer can effectively trap tiny liquid droplets entrained in the gas, achieving gas-liquid separation and minimizing the water content of the gas entering the subsequent pipeline, preventing liquid water from impacting the steam boiler 61.

[0084] Furthermore, the gas at the outlet of the scrubbing tower 91 is transported to the steam boiler 61 through the return gas pipe 93. To ensure safe transport, the return gas pipe 93 can be wrapped with an insulation layer or equipped with a self-regulating heating tape to maintain the gas flow temperature and prevent condensation from forming on the pipe wall due to ambient temperature differences during long-distance transport.

[0085] Regarding combustion control, in this application, the flow rate of the exhaust gas returning to the steam boiler 61 is controlled within the range of 5%-10% of the total combustion air required by the steam boiler 61. Under this low mixing ratio, even if the exhaust gas still contains a small amount of saturated water vapor after demisting, it will instantly vaporize in the high-temperature zone (usually greater than 800°C) of the furnace of the steam boiler 61, without damaging the combustion stability of the boiler or causing a risk of flameout.

[0086] More importantly, the exhaust gas typically contains over 15% oxygen, which can be introduced into the steam boiler 61 as supplementary combustion air. Although introducing low-temperature exhaust gas does not directly increase sensible heat gain, this design cleverly utilizes the existing high-temperature environment of the steam boiler 61 to thoroughly thermally oxidize and decompose residual odor molecules in the exhaust gas, thereby replacing the high-energy-consuming exhaust gas incineration equipment (such as a regenerative thermal oxidizer) or complex chemical deodorization system that must be separately installed in existing processes. Therefore, this sludge treatment device eliminates the fuel consumption and equipment investment of a separate deodorization unit, achieving energy saving and cost reduction.

[0087] The implementation principle of this application embodiment is as follows: During sludge treatment, the sludge is input into the sludge treatment line 100 for processing. The specific processing procedure is as follows: The sludge pump 11 transports the sludge to the mixing tank 22 for chemical flocculation, and then the sludge is mechanically squeezed and dewatered by the screw press sludge dewatering machine 23. The dewatered sludge cake is pumped to the drying unit 4 by the relay conveying mechanism 3. The drying unit 4 uses a heating medium to evaporate the water in the sludge, reducing the sludge moisture content from 80% to 35%-40%. Then the drying unit 4 discharges the dried sludge into the sludge feeding mechanism 5, and finally the dried sludge is transported and discharged by the sludge feeding mechanism 5.

[0088] In this process, the saturated steam supplied by the heat medium supply unit 6 enters the drying unit 4 to release latent heat to dry the sludge, and the condensate after heat exchange enters the air preheating unit 7 to release sensible heat to preheat the air. Finally, the condensate flows back into the heat medium supply unit 6.

[0089] Meanwhile, the air supplied by the air supply unit 8 is preheated by the air preheating unit 7 and then enters the drying unit 4 as a carrier gas to carry moisture, thereby forming exhaust gas. The exhaust gas is then purified by the exhaust gas purification unit 9 and then transported to the heat medium supply unit 6 for high-temperature co-firing.

[0090] With this design, energy consumption is reduced not only through the cascade utilization of thermal energy during sludge treatment, but also through tail gas combustion to reduce exhaust emissions, and the heating medium is reused through reflux.

[0091] Example 2: A high-efficiency synergistic sludge treatment device, referring to... Figure 9 and Figure 10 The difference between this embodiment and embodiment 1 is that the sludge treatment device also includes a return material mixing mechanism 10, which is located between the relay conveying mechanism 3 and the drying mechanism 4.

[0092] Reference Figure 10 The return mixing mechanism 10 includes a mixing tank 101, which is equipped with an agitator. The agitator includes an agitator motor mounted on the top of the mixing tank 101, an agitator shaft extending into the mixing tank 101, and agitator blades. The mixing tank 101 is located between the relay conveying mechanism 3 and the drying mechanism 4, and the end of the relay pipe 34 away from the relay pump 33 is connected to the wet material inlet of the mixing tank 101.

[0093] Reference Figure 10 The return mixing mechanism 10 also includes a dry material conveying component 102, one end of which is connected to the sludge feeding mechanism 5, and the other end extends to be connected to the dry material inlet of the mixing tank 101.

[0094] Based on the design of the return mixing mechanism 10, during the process of the sludge discharge mechanism 5 discharging dried sludge, the dry material conveying component 102 can intercept part of the high-temperature dry sludge conveyed by the sludge discharge mechanism 5 and convey it to the mixing tank 101. At this time, the dry sludge conveyed by the dry material conveying component 102 to the mixing tank 101 and the wet sludge conveyed by the relay pipe 34 to the mixing tank 101 are mixed together. The sensible heat of the high-temperature dry sludge is used to preheat the wet sludge in contact, and the physical skeleton effect of the dry sludge is used to reduce the overall moisture content of the mixture. This makes the physical state of the mixed sludge change from the original high-viscosity soft paste to a hard paste with reduced viscosity. After the sludge in this state enters the drying mechanism 4, it is not easy to adhere to the blades or the inner wall.

[0095] With this design, the mixed sludge retains the continuous flowability required for pumping and transportation, ensuring stable feeding to the drying unit 4. Furthermore, due to its reduced viscosity and preheating, it effectively avoids the high-viscosity zone that typically occurs in the early stages of drying, preventing the formation of a heat-insulating scale layer (wall adhesion) on the impeller and inner wall surfaces. This ensures that the heat transfer surfaces within the drying unit 4 remain clean and in full contact with the sludge, thereby improving the heat transfer coefficient and overall drying efficiency of the drying unit 4.

[0096] Reference Figure 10 In this embodiment, the dry material conveying assembly 102 adopts a belt conveyor or a tubular screw conveyor, and a material distribution assembly is provided at the connection between the dry material conveying assembly 102 and the sludge feeding mechanism 5. The material distribution assembly adopts an electric material distribution valve or an adjustable slide valve to accurately control the return ratio of dry sludge.

[0097] In this embodiment, in order to achieve fully enclosed conveying, the outer cover of the dry material conveying assembly 102 is equipped with a sealed dust cover. The feed end of the dry material conveying assembly 102 is sealed and connected to the sludge unloading mechanism 5, and the discharge end of the dry material conveying assembly 102 is equipped with a rotary valve (also known as a rotary valve). The lower flange of the rotary valve is sealed and connected to the dry material inlet of the mixing tank 101.

[0098] During the process of conveying sludge to the mixing tank 101 by the dry material conveying assembly 102, the rotary valve acts as an airlock while rotating to discharge the sludge, quantitatively adding the dry sludge into the mixing tank 101, and preventing the waste gas in the mixing tank 101 from leaking back.

[0099] Reference Figure 10 A secondary pumping assembly 103 is provided between the mixing tank 101 and the drying mechanism 4. The secondary pumping assembly 103 includes a secondary mud inlet pump and a secondary mud pump channel. The inlet of the secondary mud inlet pump is connected to the outlet at the bottom of the mixing tank 101 through a pipe. One end of the secondary mud pump channel is connected to the outlet of the secondary mud inlet pump, and the other end is connected to the mud inlet of the drying mechanism 4.

[0100] Under the action of the secondary pumping component 103, the sludge that is mixed evenly and has reduced viscosity in the mixing tank 101 is pressurized again and pumped steadily and continuously into the drying mechanism 4 for final drying treatment. Since the fluidity and heat transfer performance of the sludge have been improved, the heat exchange efficiency and operational stability of the drying mechanism 4 are improved.

[0101] Reference Figure 10The mixing tank 101 has a heating jacket on its outer wall, and a sealed heat exchange cavity is formed between the heating jacket and the outer wall of the mixing tank 101. The connecting pipe 92 includes a first pipe 921 and a second pipe 922. One end of the first pipe 921 is connected to the heating jacket, and the other end is connected to the exhaust gas outlet of the drying mechanism 4. One end of the second pipe 922 is connected to the heating jacket, and the other end is connected to the air inlet of the washing tower 91.

[0102] With this design, the hot and humid exhaust gas discharged from the drying unit 4 directly enters the heating jacket of the mixing tank 101. The sensible and latent heat of the hot and humid exhaust gas is used to conduct contact heating and insulation of the sludge in the mixing tank 101. This not only recovers the heat energy in the exhaust gas for preheating the mixture, but also prevents the loss of heat in the mixing tank 101.

[0103] The implementation principle of this embodiment is as follows: During the sludge treatment process, the wet sludge conveyed by the relay conveying mechanism 3 first enters the mixing tank 101. Simultaneously, the dry material conveying assembly 102 intercepts a portion of the high-temperature dry sludge discharged from the sludge discharge mechanism 5 and conveys it to the mixing tank 101. Inside the mixing tank 101, the high-temperature dry sludge and wet sludge are mixed and stirred. Utilizing the sensible heat and skeletal effect of the dry sludge, the highly viscous wet sludge is modified into a less viscous, pumpable, hard paste-like sludge. Subsequently, under the action of the secondary pumping assembly 103, the mixed sludge is stably and continuously pumped to the drying mechanism 4 for final drying treatment.

[0104] During this process, the hot and humid exhaust gas discharged from the drying unit 4 enters the heating jacket outside the mixing tank 101 directly through the first pipe 921. The hot and humid exhaust gas releases sensible heat and latent heat in the heating jacket to heat and keep the material in the mixing tank 101 warm. The exhaust gas after heat exchange is then transported to the washing tower 91 for purification through the second pipe 922.

[0105] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high efficiency synergic sludge treatment device, characterized in that, The application relates to a sludge treatment line (100) comprising a sludge feeding mechanism (1), a sludge dewatering mechanism (2), a relay conveying mechanism (3), a drying mechanism (4) and a sludge discharging mechanism (5) which are sequentially connected, the sludge treatment line (100) being used for conveying sludge and dewatering the sludge; a heat medium supply mechanism (6) used for generating and outputting a heating medium; an air supply mechanism (8) used for outputting air; an air preheating mechanism (7), the heat medium supply mechanism (6), the drying mechanism (4) and the air preheating mechanism (7) being sequentially connected, the heat medium supply mechanism (6) being used for outputting the heating medium and sequentially flowing through the drying mechanism (4) and the air preheating mechanism (7); the air supply mechanism (8), the air preheating mechanism (7) and the drying mechanism (4) being sequentially connected, the air supply mechanism (8) being used for outputting air and sequentially flowing through the air preheating mechanism (7) and the drying mechanism (4); and the air preheating mechanism (7) being used for heat exchanging the heating medium with the air; and a tail gas purification mechanism (9), the tail gas purification mechanism (9) being connected with the drying mechanism (4), and the tail gas purification mechanism (9) being used for collecting and purifying the air passing through the drying mechanism (4). The air preheating mechanism (7) is connected with the heat medium supply mechanism (6), and the air preheating mechanism (7) is used for conveying the heat-exchanged heating medium to the heat medium supply mechanism (6). The heat medium supply mechanism (6) comprises a steam boiler (61) and a steam pipeline (62), one end of the steam pipeline (62) is connected with the steam boiler (61), and the other end of the steam pipeline (62) is connected with the drying mechanism (4). The tail gas purification mechanism (9) is connected with the steam boiler (61), and the tail gas purification mechanism (9) is used for inputting the purified air into the steam boiler (61). The relay conveying mechanism (3) comprises a sludge bin (31), a screw feeder (32) and a relay pump (33), the screw feeder (32) is arranged in a vertical direction and is spaced apart from the sludge dewatering mechanism (2), the sludge bin (31) is arranged in a vertical direction and is located between the screw feeder (32) and the sludge dewatering mechanism (2), the bottom of the sludge bin (31) is connected with the screw feeder (32), and the screw feeder (32), the relay pump (33) and the drying mechanism (4) are sequentially connected. The sludge bin (31) is located directly below a sludge discharge port of the sludge dewatering mechanism (2), a detachable sealing cover is arranged above the sludge bin (31), and the sealing cover seals the sludge bin (31).

2. The high efficiency synergic sludge treatment device according to claim 1, characterized in that, The relay conveying mechanism (3) further comprises a discharging pipeline, the discharging pipeline is located between the sludge bin (31) and the sludge dewatering mechanism (2), the upper end of the discharging pipeline is connected with the sludge discharge port of the sludge dewatering mechanism (2), the lower end of the discharging pipeline is connected with the sealing cover, and the lower end of the discharging pipeline is connected with the sludge bin (31).

3. The high efficiency synergic sludge treatment device according to claim 1, characterized in that, ​ ​ 4. The high efficiency synergistic sludge treatment device of claim 1, wherein, ​ ​ 5. A high efficiency synergistic sludge treatment device according to claim 4, wherein ​ 6. The high efficiency synergistic sludge treatment device of claim 1, wherein, The sludge dewatering mechanism (2) comprises a dosing machine (21), a mixing tank (22) and a stacked screw sludge dewatering machine (23), and the sludge feeding mechanism (1), the mixing tank (22), the stacked screw sludge dewatering machine (23) and the relay conveying mechanism (3) are sequentially communicated. The dosing machine (21) is communicated with the mixing tank (22), and a stirring assembly for stirring sludge is arranged in the mixing tank (22).

7. The high efficiency synergistic sludge treatment device of claim 1, wherein A drain valve is arranged between the air preheating mechanism (7) and the drying mechanism (4), one end of the drain valve is communicated with the drying mechanism (4), the other end is communicated with the air preheating mechanism (7), and the drain valve is used for controlling the flow of heating medium from the drying mechanism (4) into the air preheating mechanism (7).

8. A high efficiency synergistic sludge treatment device according to claim 7, wherein, The air preheating mechanism (7) comprises a heat exchanger (71), a heat medium inlet pipe (72), a heat medium outlet pipe (73), an air inlet pipe (74) and an air outlet pipe (75), and the heat medium inlet pipe (72), the heat medium outlet pipe (73), the air inlet pipe (74) and the air outlet pipe (75) are communicated with the heat exchanger (71); One end of the heat medium inlet pipe (72) away from the heat exchanger (71) along the length direction thereof is communicated with one end of the drain valve away from the drying mechanism (4); One end of the air inlet pipe (74) away from the heat exchanger (71) along the length direction thereof is communicated with the air supply mechanism (8); One end of the air outlet pipe (75) away from the heat exchanger (71) along the length direction thereof is communicated with the drying mechanism (4).

9. The high efficiency synergistic sludge treatment system of claim 1 wherein, Further comprising a return material mixing mechanism (10), the return material mixing mechanism (10) comprises a mixing tank (101) and a dry material conveying assembly (102), the relay conveying mechanism (3) is communicated with the mixing tank (101), one end of the dry material conveying assembly (102) is communicated with the sludge discharging mechanism (5), and the other end is communicated with the mixing tank (101), and a stirrer is arranged in the mixing tank (101); A secondary pumping assembly (103) is further arranged on the mixing tank (101), the mixing tank (101), the secondary pumping assembly (103) and the drying mechanism (4) are sequentially communicated, and the secondary pumping assembly (103) is used for pumping the mixed sludge into the drying mechanism (4).

10. A high efficiency synergistic sludge treatment device according to claim 9, wherein, A heating jacket is sleeved outside the mixing tank (101), a first pipe (921) and a second pipe (922) are communicated with the heating jacket, and the drying mechanism (4), the first pipe (921), the heating jacket, the second pipe (922) and the tail gas purification mechanism (9) are sequentially communicated.

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