Sludge thermal conditioning treatment system

Abstract

The utility model discloses a thermal conditioning treatment system for sludge, which is used for reducing the energy consumption and the cost of sludge treatment. The system comprises a sludge pretreatment unit, a thermal quenching and tempering treatment unit, a sludge dewatering unit and a wastewater and waste gas treatment unit, the sludge pretreatment unit comprises a sludge temporary storage tank, a spiral conveying assembly, a sludge matching and mixing assembly, a first filter and a first sludge conveying pump; the sludge temporary storage pool is connected with the inlet end of the spiral conveying assembly, the outlet end of the spiral conveying assembly is connected with the sludge compatibility mixing assembly, the sludge compatibility mixing assembly is connected with the first filter, and the first filter is connected with the sludge temporary storage pool. More specifically, the utility model provides a sludge thermal conditioning (efficient flash evaporation) treatment system which can perform thermal conditioning modification on sludge so as to remarkably improve the dewatering performance of the sludge. Meanwhile, the sludge is subjected to thermal refining by adopting the treatment system disclosed by the invention, phase change is avoided, waste heat is effectively recycled, and the energy consumption can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of environmental protection, in particular to the field of sludge treatment, and specifically to a sludge thermal conditioning treatment system. Background Art

[0002] In recent years, with the rapid development of urbanization, the amount of sludge generated in cities has increased day by day. As a product of sewage treatment, sludge is an extremely complex heterogeneous body composed of organic debris, bacterial cells, inorganic particles, colloids, etc. Urban sludge has the characteristics of high water content, large volume, easy to rot, and foul odor. It may also be accompanied by toxic and harmful substances such as heavy metals and pathogens. If the sludge is discharged in an uncontrolled and disorderly manner, it will pose a serious threat to water bodies, land, atmosphere and human health. Therefore, it is very important to reduce, stabilize and harmlessly treat and dispose of sludge.

[0003] Conventional dehydration methods are used to treat sludge. The moisture content of dehydrated sludge is usually around 75% to 80%. Sludge with high moisture content is not only not conducive to sludge transportation and stacking, but also causes secondary pollution to the environment. Therefore, sludge drying is a necessary process for sludge resource utilization.

[0004] The inventors have found that the existing sludge semi-drying and drying incineration disposal processes use a lot of heat energy to dry high-water content sludge, which cannot achieve the purpose of economical sludge disposal. The huge energy consumption of drying high-water content sludge (high-water content sludge usually refers to sludge with a water content of more than 80%) makes the sludge disposal cost very high, which is also the fundamental reason for the low sludge resource disposal rate and the slow progress of the incineration power generation disposal method.

[0005] Therefore, new devices and / or methods are urgently needed to reduce the energy consumption and cost of sludge disposal. Utility Model Content

[0006] The invention object of the utility model is to provide a sludge thermal conditioning treatment system to reduce the energy consumption and cost of sludge disposal. More specifically, the present application provides a sludge thermal conditioning (high-efficiency flash evaporation) treatment system, which can thermally condition and modify the sludge, thereby significantly improving the sludge dewatering performance. At the same time, the treatment system of the present application is used to condition the sludge, which has no phase change, and the waste heat is effectively recycled, which can effectively reduce energy consumption.

[0007] In order to achieve the above purpose, this application adopts the following technical solutions:

[0008] A sludge thermal conditioning treatment system, comprising a sludge pretreatment unit, a thermal conditioning treatment unit, a sludge dehydration unit, and a wastewater and waste gas treatment unit;

[0009] The sludge pretreatment unit includes a sludge temporary storage tank for storing the sludge to be treated, a screw conveying component, a sludge mixing component, a first filter, and a first sludge conveying pump;

[0010] The sludge temporary storage tank is connected to the inlet end of the spiral conveying component, and the sludge in the sludge temporary storage tank can be transported by the spiral conveying component. The outlet end of the spiral conveying component is connected to the sludge matching and mixing component, and a first hot sludge slurry can be obtained after being processed by the sludge matching and mixing component. The sludge matching and mixing component is connected to the first filter, and the first hot sludge slurry can be filtered by the first filter to obtain a first filtrate and a first filtrate respectively. The first filter is connected to the sludge temporary storage tank, and the first filtrate produced by the first filter can be returned to the sludge temporary storage tank.

[0011] The heat conditioning treatment unit includes a multiple-effect digester, a laminar post-digester, a primary flash evaporator, a secondary flash evaporator, a second boiler, and a second sludge delivery pump;

[0012] The multi-effect digester comprises a digester stage, a digester stage, and a digester stage. The digester stage, the digester stage, and the digester stage are sequentially connected from top to bottom as a whole. The first filter is connected to the digester stage through a first sludge delivery pump, and the first filtrate generated by the first filter can be delivered to the digester stage through the first sludge delivery pump.

[0013] The second boiler is connected to the third stage of the digester and the steam generated by the second boiler can be fed into the third stage of the digester and flow upward from bottom to top in the multi-effect digester along the third stage of the digester to the first stage of the digester;

[0014] The third stage of the digester is connected to the laminar flow post-digester, and the sludge treated by the third stage of the digester can enter the laminar flow post-digester for pyrolysis treatment, the laminar flow post-digester is connected to the first-stage flash evaporator, and the sludge treated by the laminar flow post-digester can enter the first-stage flash evaporator for gas-liquid separation and obtain flash first-stage steam and flash first-stage sludge respectively, the first-stage flash evaporator is connected to the second-stage flash evaporator, and the flash first-stage sludge in the first-stage flash evaporator can enter the second-stage flash evaporator for gas-liquid separation and obtain flash second-stage steam and flash second-stage sludge respectively;

[0015] The primary flash evaporator is connected to the secondary stage of the digester and the flashed primary steam in the primary flash evaporator can enter the secondary stage of the digester, and the secondary flash evaporator is connected to the primary stage of the digester and the flashed secondary steam in the secondary flash evaporator can enter the primary stage of the digester;

[0016] The sludge dehydration unit includes a third dehydrator, a third sludge conveying device, and a dehydrated sludge bin;

[0017] The secondary flash evaporator is connected to the third dehydrator through the second sludge delivery pump, and the flashed secondary sludge in the secondary flash evaporator can be delivered to the third dehydrator through the second sludge delivery pump for dehydration treatment;

[0018] The third dewatering machine is connected to the desiccant sludge bin through the third sludge conveying device, and the sludge treated by the third dewatering machine can be conveyed into the desiccant sludge bin through the third sludge conveying device for forced ventilation treatment;

[0019] The wastewater and waste gas treatment unit includes a gas washing tower, which is respectively connected to the third sludge conveying device and the de-dried sludge bin, and the waste gas generated in the third sludge conveying device and the waste gas in the de-dried sludge bin can be respectively sent to the gas washing tower for washing treatment and obtain fourth high-temperature wastewater and fourth treated gas respectively. The gas washing tower is connected to the sludge matching and mixing component, and the fourth high-temperature wastewater generated by the gas washing tower can be returned to the sludge matching and mixing component.

[0020] The screw conveying assembly includes an inclined screw conveyor and a horizontal screw conveyor. The sludge temporary storage tank, the inclined screw conveyor, the horizontal screw conveyor, and the sludge mixing assembly are connected in sequence, and the sludge in the sludge temporary storage tank can be transported to the sludge mixing assembly via the inclined screw conveyor and the horizontal screw conveyor in sequence.

[0021] The sludge mixing component includes a sludge mixer and a sludge mixer. The horizontal screw conveyor, the sludge mixer and the first filter are connected in sequence, and part of the sludge transported by the horizontal screw conveyor can be sent to the first filter after being mixed by the sludge mixer. The horizontal screw conveyor, the sludge mixer and the first filter are connected in sequence, and part of the sludge transported by the horizontal screw conveyor can be sent to the first filter after being mixed by the sludge mixer.

[0022] The gas washing tower is connected to the sludge mixer and the fourth high-temperature wastewater produced by the gas washing tower can be returned to the sludge mixer. The gas washing tower is connected to the sludge mixer and the fourth high-temperature wastewater produced by the gas washing tower can be returned to the sludge mixer.

[0023] It also includes forced ventilation equipment, which is connected to the de-dried sludge bin and can perform forced ventilation treatment on the sludge in the de-dried sludge bin.

[0024] It also includes a fourth chimney, the gas washing tower is connected to the fourth chimney, and the fourth treated gas generated by the gas washing tower can be discharged through the fourth chimney after being tested and meeting the standards.

[0025] It also includes a fourth sewage tank, the gas washing tower is connected to the fourth sewage tank and the fourth high-temperature wastewater generated by the gas washing tower can be sent to the fourth sewage tank for temporary storage, the third dehydrator is connected to the fourth sewage tank and the wastewater generated by the third dehydrator can be sent to the fourth sewage tank for temporary storage, the fourth sewage tank is connected to the sludge matching and mixing component and the fourth high-temperature wastewater in the fourth sewage tank can be sent to the sludge matching and mixing component.

[0026] The third sludge conveying device is a belt conveyor. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the sludge thermal conditioning treatment system in Example 1.

[0028] Markings in the figure: 1. Sludge temporary storage tank, 2. Screw conveying assembly, 3. Sludge mixing assembly, 4. First filter, 5. Multi-effect digester, 6. Laminar post-digester, 7. First-stage flash evaporator, 8. Second-stage flash evaporator, 9. Second boiler, 10. Digester first stage, 11. Digester second stage, 12. Digester third stage, 13. First sludge conveying pump, 14. Second sludge conveying pump, 15. Third dehydrator, 16. Third sludge conveying device, 17. Dehydrated sludge bin, 18. Fourth chimney, 19. Gas washing tower, 20. Fourth sewage tank. DETAILED DESCRIPTION

[0029] The utility model is described in detail below in conjunction with the accompanying drawings.

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] Example 1

[0032] 1. Equipment structure

[0033] The most important step in sludge treatment is to separate the water in the sludge and reduce the volume of the sludge, thereby reducing the sludge volume load in the subsequent treatment process. Therefore, a safe, efficient, energy-saving and low-cost sludge dewatering treatment and disposal device is essential.

[0034] To this end, the present embodiment provides a sludge thermal conditioning treatment system, which includes a sludge pretreatment unit, a thermal conditioning treatment unit, a sludge dehydration unit, and a wastewater and waste gas treatment unit.

[0035] The sludge pretreatment unit includes a sludge temporary storage tank, a spiral conveying assembly, a sludge mixing assembly, a first filter, and a first sludge conveying pump. The sludge temporary storage tank is used to store the sludge to be treated, the sludge temporary storage tank is connected to the inlet end of the spiral conveying assembly, the outlet end of the spiral conveying assembly is connected to the sludge mixing assembly, the sludge mixing assembly is connected to the first filter, and the first filter is connected to the sludge temporary storage tank. With this structure, the sludge in the sludge temporary storage tank is transported to the sludge mixing assembly through the spiral conveying assembly; after being processed by the sludge mixing assembly, a first hot sludge slurry can be obtained; after the first hot sludge slurry is filtered through the first filter, a first filtrate and a first filtrate are obtained respectively; the first filtrate produced by the first filter is returned to the sludge temporary storage tank.

[0036] Furthermore, the screw conveying assembly includes an inclined screw conveyor and a horizontal screw conveyor, and the sludge temporary storage tank, the inclined screw conveyor, the horizontal screw conveyor, and the sludge compatibility and mixing assembly are connected in sequence, and the sludge in the sludge temporary storage tank can be transported to the sludge compatibility and mixing assembly via the inclined screw conveyor and the horizontal screw conveyor in sequence. Preferably, the sludge compatibility and mixing assembly includes a sludge mixer and a sludge mixer, and the horizontal screw conveyor, the sludge mixer, and the first filter are connected in sequence, and part of the sludge transported by the horizontal screw conveyor can be transported to the first filter after being stirred by the sludge mixer; the horizontal screw conveyor, the sludge mixer, and the first filter are connected in sequence, and part of the sludge transported by the horizontal screw conveyor can be transported to the first filter after being stirred by the sludge mixer.

[0037] The heat conditioning treatment unit includes a multiple-effect digester, a laminar post-digester, a primary flash evaporator, a secondary flash evaporator, a second boiler, and a second sludge delivery pump. In this embodiment, as shown in the figure, the multiple-effect digester includes a primary digester, a secondary digester, and a third digester. The primary digester, the secondary digester, and the third digester are sequentially connected from top to bottom as a whole. The first filter is connected to the primary digester through the first sludge delivery pump, and the first filtrate generated by the first filter can be delivered to the primary digester through the first sludge delivery pump. The second boiler is connected to the third digester, and the steam generated by the second boiler can be delivered to the third digester; in the multiple-effect digester, along the direction from the third digester to the first digester, the steam in the third digester flows upward and enters the second digester, and the steam entering the second digester flows upward again and enters the first digester.

[0038] The third stage of the digester is connected to the laminar flow post-digester, and the sludge treated in the third stage of the digester can enter the laminar flow post-digester for pyrolysis treatment; the laminar flow post-digester is connected to the first-stage flash evaporator, and the sludge treated in the laminar flow post-digester can enter the first-stage flash evaporator for gas-liquid separation, and flash first-stage steam and flash first-stage sludge are obtained respectively; the first-stage flash evaporator is connected to the second-stage flash evaporator, and the flash first-stage sludge in the first-stage flash evaporator can enter the second-stage flash evaporator for gas-liquid separation, and flash second-stage steam and flash second-stage sludge are obtained respectively. At the same time, the third stage of the digester is connected to the laminar flow post-digester, and the sludge treated in the third stage of the digester can enter the laminar flow post-digester for pyrolysis treatment; the laminar flow post-digester is connected to the first flash evaporator, and the sludge treated in the laminar flow post-digester can enter the first flash evaporator for gas-liquid separation, and flash first-stage steam and flash first-stage sludge are obtained respectively; the first flash evaporator is connected to the second flash evaporator, and the flash first-stage sludge in the first flash evaporator can enter the second flash evaporator for gas-liquid separation, and flash second-stage steam and flash second-stage sludge are obtained respectively. The first flash evaporator is connected to the second stage of the digester, and the flash first-stage steam in the first flash evaporator can enter the second stage of the digester; the second flash evaporator is connected to the first stage of the digester, and the flash second-stage steam in the second flash evaporator can enter the first stage of the digester.

[0039] The sludge dewatering unit includes a third dewatering machine, a third sludge conveying device, and a dewatered sludge bin. In this embodiment, the third sludge conveying device adopts a belt conveyor. The secondary flash evaporator is connected to the third dewatering machine through a second sludge conveying pump, and the flashed secondary sludge in the secondary flash evaporator can be sent to the third dewatering machine through the second sludge conveying pump for dewatering. The third dewatering machine is connected to the dewatered sludge bin through the third sludge conveying device, and the sludge treated by the third dewatering machine can be sent to the dewatered sludge bin through the third sludge conveying device for forced ventilation treatment.

[0040] Preferably, it also includes a forced ventilation device, which is connected to the de-dried sludge bin and can perform forced ventilation treatment on the sludge in the de-dried sludge bin.

[0041] The wastewater and waste gas treatment unit includes a gas washing tower, which is connected to the third sludge conveying device and the de-dried sludge bin respectively, and the waste gas generated in the third sludge conveying device and the waste gas in the de-dried sludge bin can be respectively sent to the gas washing tower for washing treatment, and the fourth high-temperature wastewater and the fourth treated gas can be obtained respectively. Further, it also includes a fourth chimney, the gas washing tower is connected to the fourth chimney, and the fourth treated gas generated by the gas washing tower can be discharged through the fourth chimney after being tested and meeting the standards. The gas washing tower is connected to the sludge mixing component, and the fourth high-temperature wastewater generated by the gas washing tower can be returned to the sludge mixing component. Further, the gas washing tower is connected to the sludge mixer, and the fourth high-temperature wastewater generated by the gas washing tower can be returned to the sludge mixer; the gas washing tower is connected to the sludge mixer, and the fourth high-temperature wastewater generated by the gas washing tower can be returned to the sludge mixer. Preferably, it also includes a fourth sewage tank, the gas washing tower is connected to the fourth sewage tank, and the fourth high-temperature wastewater generated by the gas washing tower can be sent to the fourth sewage tank for temporary storage; the third dehydrator is connected to the fourth sewage tank, and the wastewater generated by the third dehydrator can be sent to the fourth sewage tank for temporary storage; the fourth sewage tank is connected to the sludge matching and mixing component, and the fourth high-temperature wastewater in the fourth sewage tank can be sent to the sludge matching and mixing component.

[0042] The sludge thermal conditioning treatment system of the present application is firstly used to perform sludge pretreatment in the sludge pretreatment unit. Specifically, sludge with a moisture content of 80% is firstly stored in a sludge temporary storage tank, and then the sludge is transported to the sludge matching and mixing component by a screw conveying component to stir, match and mix the sludge; at the same time, the fourth high-temperature wastewater of 100°C produced by the gas washing tower is returned to the sludge matching and mixing component to match the sludge and preheat the sludge to obtain hot sludge slurry with a moisture content of about 90%; the hot sludge slurry enters the first filter for filtration, and a first filtrate and a first filtrate are obtained respectively; the first filtrate is mainly long fibers and coarse residues, and the filtered long fibers and coarse residues are returned to the sludge temporary storage tank for further treatment; and the first filtrate enters the multi-effect digester.

[0043] Next, the hot sludge enters the thermal conditioning treatment unit for separate heating. The sludge is distributed from the top of the multiple-effect digester through the internal diverter and flows into the multiple-effect digester in laminar flow. The raw steam generated by the second boiler is pressurized to 1.0Mpa and enters the multiple-effect digester from the third stage of the digester. After being heated and evaporated, it enters the multiple-effect digester. At this time, the multiple-effect digester continues to pyrolyze the sludge.

[0044] The sludge after pyrolysis in the multi-effect digester enters the first-stage flash evaporator for vapor-liquid separation, and obtains clean flash first-stage steam and flash first-stage sludge respectively; the flash first-stage steam in the first-stage flash evaporator enters the second stage of the digester to provide a recovery heat source. Similarly, the flash first-stage sludge produced by the first-stage flash evaporator enters the second-stage flash evaporator, and the sludge enters the second-stage flash evaporator for gas-liquid separation, and obtains flash second-stage steam and flash second-stage sludge respectively. The flash second-stage steam in the second-stage flash evaporator enters the first stage of the digester to provide a recovery heat source. In the present application, the secondary steam generated by evaporation is used as a heat source for other stages of the heating system, which can reduce the consumption of raw steam in the second boiler; adopting this structure, efficient utilization of pyrolysis flash secondary steam can be achieved.

[0045] After that, the sludge enters the sludge dehydration unit, and after dehydration treatment by the third dehydrator, the sludge moisture content is between 40% and 50%; then, the belt conveyor transports the dehydrated sludge to the dehydration sludge bin, and forced ventilation is carried out for 48 hours to obtain sludge with a moisture content of about 30%. In this embodiment, the sludge after heat quenching and drying has properties similar to soil, dark brown, loose and porous, with a sludge moisture content of less than 50%, and easy to shape. At the same time, the sludge after heat quenching and drying can be further made into fuel rods, etc., to achieve resource utilization.

[0046] Finally, the wastewater and waste gas treatment unit treats the non-condensable gas in the system and the gas collected in the de-sludge bin through the gas scrubber and discharges them in compliance with the standards; and the high-temperature wastewater produced by the gas scrubber is all returned to the sludge mixing component. With this structure, the high-temperature de-sludge water is returned and mixed, which can improve the economy and reliability of the equipment.

[0047] Compared with the prior art, the sludge thermal conditioning treatment system of the present application has the following beneficial effects:

[0048] (1) By using the device of the present application, the sludge is subjected to heat conditioning treatment, which destroys the sludge cell structure and greatly improves the sludge dewatering performance, so that the heat-conditioned sludge can be mechanically dehydrated to a moisture content of about 40%-50%, greatly reducing the heat consumption of sludge drying;

[0049] (2) The flash secondary steam of thermal conditioning is used to heat the sludge thermal conditioning effect under the action of the heat pump; the high-temperature sludge dewatering water is recovered through the high-temperature sewage pump and 50% of the heat energy of the dewatering water is recovered; at the same time, the multi-effect digester can recover the cooking heat energy to achieve efficient utilization of the pyrolysis flash secondary steam;

[0050] (3) The sludge treatment system occupies a small area and saves resources;

[0051] (4) The sludge after heat conditioning and drying by the device of the present application has properties similar to soil, with a dark brown appearance, loose and porous, a sludge moisture content of less than 50%, and is easy to shape. It can be further made into fuel rods, etc., which can realize the resource utilization of sludge.

[0052] (II) Energy consumption analysis

[0053] 1. The heat energy balance table of sludge thermal conditioning is shown in Table 1.

[0054] Table 1

[0055]

[0056] Test data show that the device of the present application can maintain the balance of incineration heat energy and can provide nearly 50% of excess heat energy for sludge; at the same time, the steam consumed for treating each ton of sludge with a moisture content of 80% is close to 200Kg, and the electricity consumption is less than 25Kwh, with significant energy-saving efficiency.

[0057] 2. The energy consumption data of existing semi-drying sludge incineration, existing full-drying sludge incineration and thermal conditioning and drying incineration in this application are compared as shown in Table 2 below.

[0058] Table 2

[0059]

[0060] When treating sludge under the same conditions, the steam consumed by the existing sludge semi-drying incineration and sludge full-drying incineration treatment processes is much higher than the thermal tempering drying incineration process of the present application, and the present application has a significant energy-saving effect.

[0061] The above description is only 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 in the protection scope of the present invention.

Claims

1. A sludge thermal conditioning treatment system, characterized in that: It includes sludge pretreatment unit, thermal conditioning treatment unit, sludge dehydration unit, and wastewater and waste gas treatment unit; The sludge pretreatment unit includes a sludge temporary storage tank for storing the sludge to be treated, a screw conveying component, a sludge mixing component, a first filter, and a first sludge conveying pump; The sludge temporary storage tank is connected to the inlet end of the spiral conveying component, and the sludge in the sludge temporary storage tank can be transported by the spiral conveying component. The outlet end of the spiral conveying component is connected to the sludge matching and mixing component, and a first hot sludge slurry can be obtained after being processed by the sludge matching and mixing component. The sludge matching and mixing component is connected to the first filter, and the first hot sludge slurry can be filtered by the first filter to obtain a first filtrate and a first filtrate respectively. The first filter is connected to the sludge temporary storage tank, and the first filtrate produced by the first filter can be returned to the sludge temporary storage tank. The heat conditioning treatment unit includes a multiple-effect digester, a laminar post-digester, a primary flash evaporator, a secondary flash evaporator, a second boiler, and a second sludge delivery pump; The multi-effect digester comprises a digester stage, a digester stage, and a digester stage. The digester stage, the digester stage, and the digester stage are sequentially connected from top to bottom as a whole. The first filter is connected to the digester stage through a first sludge delivery pump, and the first filtrate generated by the first filter can be delivered to the digester stage through the first sludge delivery pump. The second boiler is connected to the third stage of the digester and the steam generated by the second boiler can be fed into the third stage of the digester and flow upward from bottom to top in the multi-effect digester along the third stage of the digester to the first stage of the digester; The third stage of the digester is connected to the laminar flow post-digester, and the sludge treated by the third stage of the digester can enter the laminar flow post-digester for pyrolysis treatment, the laminar flow post-digester is connected to the first-stage flash evaporator, and the sludge treated by the laminar flow post-digester can enter the first-stage flash evaporator for gas-liquid separation and obtain flash first-stage steam and flash first-stage sludge respectively, the first-stage flash evaporator is connected to the second-stage flash evaporator, and the flash first-stage sludge in the first-stage flash evaporator can enter the second-stage flash evaporator for gas-liquid separation and obtain flash second-stage steam and flash second-stage sludge respectively; The primary flash evaporator is connected to the secondary stage of the digester and the flashed primary steam in the primary flash evaporator can enter the secondary stage of the digester, and the secondary flash evaporator is connected to the primary stage of the digester and the flashed secondary steam in the secondary flash evaporator can enter the primary stage of the digester; The sludge dehydration unit includes a third dehydrator, a third sludge conveying device, and a dehydrated sludge bin; The secondary flash evaporator is connected to the third dehydrator through the second sludge delivery pump, and the flashed secondary sludge in the secondary flash evaporator can be delivered to the third dehydrator through the second sludge delivery pump for dehydration treatment; The third dewatering machine is connected to the desiccant sludge bin through the third sludge conveying device, and the sludge treated by the third dewatering machine can be conveyed into the desiccant sludge bin through the third sludge conveying device for forced ventilation treatment; The wastewater and waste gas treatment unit includes a gas washing tower, which is respectively connected to the third sludge conveying device and the de-dried sludge bin, and the waste gas generated in the third sludge conveying device and the waste gas in the de-dried sludge bin can be respectively sent to the gas washing tower for washing treatment and obtain fourth high-temperature wastewater and fourth treated gas respectively. The gas washing tower is connected to the sludge matching and mixing component, and the fourth high-temperature wastewater generated by the gas washing tower can be returned to the sludge matching and mixing component.

2. The sludge thermal conditioning treatment system according to claim 1, characterized in that: The screw conveying assembly includes an inclined screw conveyor and a horizontal screw conveyor. The sludge temporary storage tank, the inclined screw conveyor, the horizontal screw conveyor, and the sludge mixing assembly are connected in sequence, and the sludge in the sludge temporary storage tank can be transported to the sludge mixing assembly via the inclined screw conveyor and the horizontal screw conveyor in sequence.

3. The sludge thermal conditioning treatment system according to claim 2, characterized in that: The sludge mixing component includes a sludge mixer and a sludge mixer. The horizontal screw conveyor, the sludge mixer and the first filter are connected in sequence, and part of the sludge transported by the horizontal screw conveyor can be sent to the first filter after being mixed by the sludge mixer. The horizontal screw conveyor, the sludge mixer and the first filter are connected in sequence, and part of the sludge transported by the horizontal screw conveyor can be sent to the first filter after being mixed by the sludge mixer.

4. The sludge thermal conditioning treatment system according to claim 3, characterized in that: The gas washing tower is connected to the sludge mixer and the fourth high-temperature wastewater produced by the gas washing tower can be returned to the sludge mixer. The gas washing tower is connected to the sludge mixer and the fourth high-temperature wastewater produced by the gas washing tower can be returned to the sludge mixer.

5. The sludge thermal conditioning treatment system according to claim 1, characterized in that: It also includes forced ventilation equipment, which is connected to the de-dried sludge bin and can perform forced ventilation treatment on the sludge in the de-dried sludge bin.

6. The sludge thermal conditioning treatment system according to claim 1, characterized in that: It also includes a fourth chimney, the gas washing tower is connected to the fourth chimney, and the fourth treated gas generated by the gas washing tower can be discharged through the fourth chimney after being tested and meeting the standards.

7. The sludge thermal conditioning treatment system according to any one of claims 1 to 6, characterized in that: It also includes a fourth sewage tank, the gas washing tower is connected to the fourth sewage tank and the fourth high-temperature wastewater generated by the gas washing tower can be sent to the fourth sewage tank for temporary storage, the third dehydrator is connected to the fourth sewage tank and the wastewater generated by the third dehydrator can be sent to the fourth sewage tank for temporary storage, the fourth sewage tank is connected to the sludge matching and mixing component and the fourth high-temperature wastewater in the fourth sewage tank can be sent to the sludge matching and mixing component.

8. The sludge thermal conditioning treatment system according to claim 1, characterized in that: The third sludge conveying device is a belt conveyor.

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