Self-adaptive adjustment photo-thermal synergistic sludge drying method

Abstract

The invention discloses a self-adaptive adjustment photo-thermal synergistic sludge drying method, and relates to the technical field of sludge drying, and the method comprises the following steps: obtaining the characteristics of to-be-dried sludge by using the to-be-dried sludge; obtaining photo-thermal energy data of the sludge drying machine by using a solar heat collector and a high-low temperature heat pump; constructing a photo-thermal collaborative drying model according to the characteristics of the sludge to be dried and the photo-thermal energy data of the sludge drying machine; carrying out drying treatment on the to-be-dried sludge based on the photo-thermal collaborative drying model to obtain a sludge drying result; and obtaining the photo-thermal synergetic dried sludge according to the sludge drying result. The drying scheme can be automatically adjusted according to the intensity of collected solar energy, the water outlet temperature is increased while energy is saved, the drying efficiency is improved, and the environment cannot be polluted.

Description

Technical Field

[0001] The present invention belongs to the technical field of sludge drying, and in particular relates to a self-adjusting photothermal synergistic sludge drying method. Background Art

[0002] During the thermal drying process, the sludge is heated to the boiling point of water and the water vaporizes. In this process, the sludge absorbs a lot of heat, resulting in high energy consumption for drying. In recent years, the number of sludge drying projects in sewage plants has gradually increased, and the scale of sludge drying has also become larger and larger. The existing drying process is energy-intensive and there is an unavoidable over-consumption of energy. In order to promote the use of clean energy, sewage plants have begun to use heat pump systems to extract low-level heat energy for sludge drying processes. However, traditional heat pumps have low water supply temperature and a single energy-saving method, which still cannot solve the problem of excessive energy consumption at this stage.

[0003] Therefore, there is an urgent need for an adaptively regulated photothermal synergistic sludge drying method to address the deficiencies in the existing technology. Summary of the invention

[0004] The purpose of the present invention is to propose an adaptively regulated photothermal synergistic sludge drying method to solve the problem of excessive energy consumption, improve drying efficiency, and shorten drying time.

[0005] To achieve the above object, the present invention provides a self-adjusting photothermal synergistic sludge drying method, comprising the following steps: S1. Using the sludge to be dried to obtain the characteristics of the sludge to be dried; S2, using solar collectors and high and low temperature heat pumps to obtain the light and heat energy data of the sludge dryer; S3, constructing a photothermal synergistic drying model according to the characteristics of the sludge to be dried and the photothermal energy data of the sludge dryer; S4, performing drying treatment on the sludge to be dried based on the photothermal synergistic drying model to obtain a sludge drying result; S5. Obtaining photothermal synergistically dried sludge according to the sludge drying result.

[0006] Optionally, the characteristics of the sludge to be dried obtained by using the sludge to be dried include: S1-1, using the sludge to be dried to obtain the moisture content, particle size and viscosity of the sludge to be dried as initial data characteristics of the sludge to be dried; S1-2, constructing a historical sludge to be dried database based on the initial data characteristics of the sludge to be dried and the corresponding initial data characteristics of the historical sludge to be dried; S1-3, obtaining the moisture content threshold, particle size threshold and viscosity threshold of the historical sludge to be dried data according to the historical sludge to be dried database as the characteristics of the historical sludge to be dried data; S1-4. Acquire the characteristics of the sludge to be dried according to the initial data characteristics of the sludge to be dried and the historical data characteristics of the sludge to be dried.

[0007] Optionally, obtaining the characteristics of the sludge to be dried according to the initial data characteristics of the sludge to be dried and the historical data characteristics of the sludge to be dried includes: S1-4-1, judging whether the moisture content of the sludge to be dried meets the moisture content threshold of the historical sludge to be dried data, if so, executing S1-4-2, otherwise, retaining the current moisture content of the sludge to be dried, and using the moisture content of the sludge to be dried that does not meet the threshold, to update the historical sludge to be dried database, and returning to S1-3; S1-4-2, judging whether the particle size threshold of the historical sludge to be dried data completely covers the particle size of the sludge to be dried, if so, executing S1-4-3, otherwise, retaining the particle size of the current sludge to be dried, and updating the historical sludge to be dried database with the particle size of the sludge to be dried that is not covered, and returning to S1-3; S1-4-3. Determine whether the viscosity threshold of the historical sludge to be dried data completely covers the viscosity of the sludge to be dried. If so, use the initial data characteristics of the sludge to be dried as the characteristics of the sludge to be dried. Otherwise, retain the current viscosity of the sludge to be dried, use the corresponding viscosity of the sludge to be dried that is not covered to update the historical sludge to be dried database, and return to S1-3.

[0008] Optionally, solar collectors and high and low temperature heat pumps are used to obtain the solar thermal energy data of the sludge dryer, including: S2-1. Obtain solar energy intensity using sensor equipment; S2-2, obtaining a first historical solar energy intensity threshold and a second historical solar energy intensity threshold as a historical solar energy intensity threshold according to the solar energy intensity and the corresponding historical solar energy intensity; S2-3, based on the historical solar energy intensity threshold and the solar energy intensity, using the solar collector and the high and low temperature heat pump to obtain the photothermal energy data of the sludge dryer; The first historical solar energy intensity threshold is greater than the second historical solar energy intensity threshold.

[0009] Optionally, obtaining the photothermal energy data of the sludge dryer by using the solar collector and the high and low temperature heat pump based on the historical solar intensity threshold and the solar intensity includes: S2-3-1, determine whether the solar energy intensity is consistent with the first historical solar energy intensity threshold value, if so, switch the solar collector to the high-temperature heat pump outlet of the high-temperature heat pump for heating, and use the solar collector and the high-temperature heat pump to obtain the solar energy source and the hot air waste heat as the photothermal energy data of the sludge dryer, otherwise, execute S2-3-2; S2-3-2, determine whether the solar energy intensity is consistent with the second historical solar energy intensity threshold value, if so, switch the solar collector to the high and low temperature heat pump intermediate cycle heating, and use the solar collector and the high and low temperature heat pump to obtain the regenerated water source heat energy, the solar energy effective heat source and the hot air waste heat as the photothermal energy data of the sludge dryer, otherwise, directly use the regenerated water source heat energy and the hot air waste heat of the high and low temperature heat pump as the photothermal energy data of the sludge dryer; Among them, the effective solar heat source is the solar energy intensity collected by the solar collector, and the hot air waste heat is the energy obtained by using the condenser and the high and low temperature heat pump according to the waste heat generated by the dried sludge during the drying process of the dried sludge to obtain the dried sludge.

[0010] Optionally, constructing a photothermal synergistic drying model according to the characteristics of the sludge to be dried and the photothermal energy data of the sludge dryer includes: S3-1, using the light and heat energy data of the sludge dryer to obtain the state parameters of the sludge dryer; S3-2, obtaining the sludge dryer operation parameters based on the sludge dryer state parameters and utilizing the characteristics of the sludge to be dried; S3-3. Construct the photothermal synergistic drying model according to the operating parameters of the sludge dryer.

[0011] Optionally, using the light and heat energy data of the sludge dryer to obtain the state parameters of the heat pump-sludge dryer includes: S3-1-1, determine whether the solar thermal energy data of the sludge dryer contains the thermal energy of the recycled water source, if so, execute S3-1-2, otherwise, obtain the first temperature parameter, the first humidity parameter and the first pressure parameter as the state parameter of the sludge dryer according to the effective solar heat source and the hot air waste heat; S3-1-2. Determine whether the solar thermal energy data of the sludge dryer contains the effective solar energy heat source. If so, obtain the second temperature parameter, the second humidity parameter and the second pressure parameter as the state parameters of the sludge dryer according to the effective solar energy heat source, the recycled water source heat energy and the hot air waste heat. Otherwise, obtain the third temperature parameter, the third humidity parameter and the third pressure parameter as the state parameters of the sludge dryer according to the recycled water source heat energy and the hot air waste heat.

[0012] Optionally, constructing the photothermal synergistic drying model according to the operating parameters of the sludge dryer includes: S3-3-1, obtaining the current time as the continuous starting time t of the sludge dryer operation parameters; S3-3-2, obtaining the operating parameters of the sludge dryer at the continuous starting time t as a training set; S3-3-3, according to the sludge dryer operating parameters at the continuous starting time t, obtain the sludge dryer operating parameters at time t+1 and time t+2 as the first verification set and the second verification set respectively; S3-3-4, taking the training set as input, and the sludge drying result corresponding to the training set as output, and training based on the deep learning network to build an initial model of photothermal synergistic drying; S3-3-5, inputting the first verification set and the second verification set into the photothermal synergistic drying initial model to obtain a first sludge drying result and a second sludge drying result; S3-3-6. Determine whether the first sludge drying result is completely consistent with the second sludge drying result. If so, use the photothermal synergistic drying initial model as the photothermal synergistic drying model. Otherwise, update the training set according to the first sludge drying result and the second sludge drying result, and return to S3-3-4.

[0013] Optionally, the sludge to be dried is processed based on the photothermal synergistic drying model to obtain a sludge drying result, including: S4-1, using the photothermal synergistic drying model to process the sludge to be dried to obtain basic drying results of the sludge to be dried as the first sludge basic drying result, the second sludge basic drying result and the third sludge basic drying result respectively; S4-2, determining whether the first sludge basic drying result, the second sludge basic drying result and the third sludge basic drying result are completely the same, if so, using the first sludge basic drying result, the second sludge basic drying result and the third sludge basic drying result as the sludge drying result, otherwise, executing S4-3; S4-3, determine whether the first sludge basic drying result, the second sludge basic drying result and the third sludge basic drying result are completely different. If so, update the training set according to the first sludge basic drying result, the second sludge basic drying result and the third sludge basic drying result, and return to S3-3-4; otherwise, obtain the basic drying results of the different corresponding sludges to be dried and the basic drying results of the same corresponding sludges to be dried, and execute S4-4; S4-4, respectively obtaining a first dried sludge moisture content and a second dried sludge moisture content according to the basic drying results of the different corresponding sludges to be dried and the basic drying results of the same corresponding sludges to be dried; S4-5. Determine whether the moisture content of the first sludge to be dried is less than or equal to the moisture content of the second sludge to be dried. If so, use the first sludge basic drying result, the second sludge basic drying result and the third sludge basic drying result as the sludge drying result; otherwise, update the training set according to the different basic drying results of the corresponding sludge to be dried, and return to S3-3-4.

[0014] Optionally, obtaining photothermal synergistically dried sludge according to the sludge drying result includes: S5-1, obtaining the moisture content of the dried sludge using the sludge drying result; S5-2, obtaining a historical dried sludge moisture content threshold value according to the dried sludge moisture content and the corresponding historical dried sludge moisture content; S5-3. Determine whether the moisture content of the dried sludge is less than the historical dried sludge moisture content threshold. If so, use the sludge drying result as the photothermal synergistic dried sludge. Otherwise, use the sludge drying result as the sludge to be dried, and return to S4-1.

[0015] Compared with the closest prior art, the present invention has the following beneficial effects: The present invention combines solar energy with the traditional heat pump-sludge dryer, recovers the heat energy of the regenerated water source through high and low temperature heat pumps, and uses solar energy, regenerated water source heat energy and hot air waste heat as heat sources to supplement the water outlet temperature, improve the drying efficiency, greatly shorten the drying time, and determine the most suitable use position of solar energy according to the intensity of solar energy, so as to automatically adjust it, thereby saving energy and improving the efficiency of the dryer; the present invention can adjust the drying plan by itself according to the collected effective solar energy heat source, thereby saving energy and increasing the water outlet temperature, improving the drying efficiency, and not polluting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The present invention is a flowchart of an adaptively regulated photothermal synergistic sludge drying method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The terms used in the embodiments of the present invention are only used to explain the specific embodiments of the present invention and are not intended to limit the present invention.

[0020] like Figure 1 As shown, the embodiment of the present invention provides a self-adjusting photothermal synergistic sludge drying method, comprising the following steps: S1. Using the sludge to be dried to obtain the characteristics of the sludge to be dried; S2, using solar collectors and high and low temperature heat pumps to obtain the light and heat energy data of the sludge dryer; S3, constructing a photothermal synergistic drying model according to the characteristics of the sludge to be dried and the photothermal energy data of the sludge dryer; S4, performing drying treatment on the sludge to be dried based on the photothermal synergistic drying model to obtain a sludge drying result; S5. Obtaining photothermal synergistically dried sludge according to the sludge drying result.

[0021] S1 specifically includes: S1-1, using the sludge to be dried to obtain the moisture content, particle size and viscosity of the sludge to be dried as initial data characteristics of the sludge to be dried; S1-2, constructing a historical sludge to be dried database based on the initial data characteristics of the sludge to be dried and the corresponding initial data characteristics of the historical sludge to be dried; S1-3, obtaining the moisture content threshold, particle size threshold and viscosity threshold of the historical sludge to be dried data according to the historical sludge to be dried database as the characteristics of the historical sludge to be dried data; S1-4. Acquire the characteristics of the sludge to be dried according to the initial data characteristics of the sludge to be dried and the historical data characteristics of the sludge to be dried.

[0022] S1-4 specifically includes: S1-4-1, judging whether the moisture content of the sludge to be dried meets the moisture content threshold of the historical sludge to be dried data, if so, executing S1-4-2, otherwise, retaining the current moisture content of the sludge to be dried, and using the moisture content of the sludge to be dried that does not meet the threshold, to update the historical sludge to be dried database, and returning to S1-3; S1-4-2, judging whether the particle size threshold of the historical sludge to be dried data completely covers the particle size of the sludge to be dried, if so, executing S1-4-3, otherwise, retaining the particle size of the current sludge to be dried, and updating the historical sludge to be dried database with the particle size of the sludge to be dried that is not covered, and returning to S1-3; S1-4-3. Determine whether the viscosity threshold of the historical sludge to be dried data completely covers the viscosity of the sludge to be dried. If so, use the initial data characteristics of the sludge to be dried as the characteristics of the sludge to be dried. Otherwise, retain the current viscosity of the sludge to be dried, use the corresponding viscosity of the sludge to be dried that is not covered to update the historical sludge to be dried database, and return to S1-3.

[0023] S2 specifically includes: S2-1. Obtain solar energy intensity using sensor equipment; S2-2, obtaining a first historical solar energy intensity threshold and a second historical solar energy intensity threshold as a historical solar energy intensity threshold according to the solar energy intensity and the corresponding historical solar energy intensity; S2-3, based on the historical solar energy intensity threshold and the solar energy intensity, using the solar collector and the high and low temperature heat pump to obtain the photothermal energy data of the sludge dryer; The first historical solar energy intensity threshold is greater than the second historical solar energy intensity threshold.

[0024] S2-3 specifically includes: S2-3-1, determine whether the solar energy intensity is consistent with the first historical solar energy intensity threshold value, if so, switch the solar collector to the high-temperature heat pump outlet of the high-temperature heat pump for heating, and use the solar collector and the high-temperature heat pump to obtain the solar energy source and the hot air waste heat as the photothermal energy data of the sludge dryer, otherwise, execute S2-3-2; S2-3-2, determine whether the solar energy intensity is consistent with the second historical solar energy intensity threshold value, if so, switch the solar collector to the high and low temperature heat pump intermediate cycle heating, and use the solar collector and the high and low temperature heat pump to obtain the regenerated water source heat energy, the solar energy effective heat source and the hot air waste heat as the photothermal energy data of the sludge dryer, otherwise, directly use the regenerated water source heat energy and the hot air waste heat of the high and low temperature heat pump as the photothermal energy data of the sludge dryer; Among them, the effective solar heat source is the solar energy intensity collected by the solar collector, and the hot air waste heat is the energy obtained by using the condenser and the high and low temperature heat pump according to the waste heat generated by the dried sludge during the drying process of the dried sludge to obtain the dried sludge.

[0025] S3 specifically includes: S3-1, using the light and heat energy data of the sludge dryer to obtain the state parameters of the sludge dryer; S3-2, obtaining the sludge dryer operation parameters based on the sludge dryer state parameters and utilizing the characteristics of the sludge to be dried; S3-3. Construct the photothermal synergistic drying model according to the operating parameters of the sludge dryer.

[0026] S3-1 specifically includes: S3-1-1, determine whether the solar thermal energy data of the sludge dryer contains the thermal energy of the recycled water source, if so, execute S3-1-2, otherwise, obtain the first temperature parameter, the first humidity parameter and the first pressure parameter as the state parameter of the sludge dryer according to the effective solar heat source and the hot air waste heat; S3-1-2. Determine whether the solar thermal energy data of the sludge dryer contains the effective solar energy heat source. If so, obtain the second temperature parameter, the second humidity parameter and the second pressure parameter as the state parameters of the sludge dryer according to the effective solar energy heat source, the recycled water source heat energy and the hot air waste heat. Otherwise, obtain the third temperature parameter, the third humidity parameter and the third pressure parameter as the state parameters of the sludge dryer according to the recycled water source heat energy and the hot air waste heat.

[0027] S3-3 specifically includes: S3-3-1, obtaining the current time as the continuous starting time t of the sludge dryer operation parameters; S3-3-2, obtaining the operating parameters of the sludge dryer at the continuous starting time t as a training set; S3-3-3, according to the sludge dryer operating parameters at the continuous starting time t, obtain the sludge dryer operating parameters at time t+1 and time t+2 as the first verification set and the second verification set respectively; S3-3-4, taking the training set as input, and the sludge drying result corresponding to the training set as output, and training based on the deep learning network to build an initial model of photothermal synergistic drying; S3-3-5, inputting the first verification set and the second verification set into the photothermal synergistic drying initial model to obtain a first sludge drying result and a second sludge drying result; S3-3-6. Determine whether the first sludge drying result is completely consistent with the second sludge drying result. If so, use the photothermal synergistic drying initial model as the photothermal synergistic drying model. Otherwise, update the training set according to the first sludge drying result and the second sludge drying result, and return to S3-3-4.

[0028] S4 specifically includes: S4-1, using the photothermal synergistic drying model to process the sludge to be dried to obtain basic drying results of the sludge to be dried as the first sludge basic drying result, the second sludge basic drying result and the third sludge basic drying result respectively; S4-2, determining whether the first sludge basic drying result, the second sludge basic drying result and the third sludge basic drying result are completely the same, if so, using the first sludge basic drying result, the second sludge basic drying result and the third sludge basic drying result as the sludge drying result, otherwise, executing S4-3; S4-3, determine whether the first sludge basic drying result, the second sludge basic drying result and the third sludge basic drying result are completely different. If so, update the training set according to the first sludge basic drying result, the second sludge basic drying result and the third sludge basic drying result, and return to S3-3-4; otherwise, obtain the basic drying results of the different corresponding sludges to be dried and the basic drying results of the same corresponding sludges to be dried, and execute S4-4; S4-4, respectively obtaining a first dried sludge moisture content and a second dried sludge moisture content according to the basic drying results of the different corresponding sludges to be dried and the basic drying results of the same corresponding sludges to be dried; S4-5. Determine whether the moisture content of the first sludge to be dried is less than or equal to the moisture content of the second sludge to be dried. If so, use the first sludge basic drying result, the second sludge basic drying result and the third sludge basic drying result as the sludge drying result; otherwise, update the training set according to the different basic drying results of the corresponding sludge to be dried, and return to S3-3-4.

[0029] S5 specifically includes: S5-1, obtaining the moisture content of the dried sludge using the sludge drying result; S5-2, obtaining a historical dried sludge moisture content threshold value according to the dried sludge moisture content and the corresponding historical dried sludge moisture content; S5-3. Determine whether the moisture content of the dried sludge is less than the historical dried sludge moisture content threshold. If so, use the sludge drying result as the photothermal synergistic dried sludge. Otherwise, use the sludge drying result as the sludge to be dried, and return to S4-1.

[0030] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0031] The present invention is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0032] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0033] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. An adaptively regulated photothermal synergistic sludge drying method, characterized in that: The specific steps include: S1. Using the sludge to be dried to obtain the characteristics of the sludge to be dried; S2, using solar collectors and high and low temperature heat pumps to obtain the light and heat energy data of the sludge dryer; S3, constructing a photothermal synergistic drying model according to the characteristics of the sludge to be dried and the photothermal energy data of the sludge dryer; S4, performing drying treatment on the sludge to be dried based on the photothermal synergistic drying model to obtain a sludge drying result; S5. Obtaining photothermal synergistically dried sludge according to the sludge drying result.

2. The self-adaptive photothermal synergistic sludge drying method according to claim 1 is characterized in that: The characteristics of the sludge to be dried obtained by using the sludge to be dried include: S1-1, using the sludge to be dried to obtain the moisture content, particle size and viscosity of the sludge to be dried as initial data characteristics of the sludge to be dried; S1-2, constructing a historical sludge to be dried database based on the initial data characteristics of the sludge to be dried and the corresponding initial data characteristics of the historical sludge to be dried; S1-3, obtaining the moisture content threshold, particle size threshold and viscosity threshold of the historical sludge to be dried data according to the historical sludge to be dried database as the characteristics of the historical sludge to be dried data; S1-4. Acquire the characteristics of the sludge to be dried according to the initial data characteristics of the sludge to be dried and the historical data characteristics of the sludge to be dried.

3. The self-adaptive photothermal synergistic sludge drying method according to claim 2 is characterized in that: Acquiring the characteristics of the sludge to be dried according to the initial data characteristics of the sludge to be dried and the historical data characteristics of the sludge to be dried includes: S1-4-1, judging whether the moisture content of the sludge to be dried meets the moisture content threshold of the historical sludge to be dried data, if so, executing S1-4-2, otherwise, retaining the current moisture content of the sludge to be dried, and using the moisture content of the sludge to be dried that does not meet the threshold, to update the historical sludge to be dried database, and returning to S1-3; S1-4-2, judging whether the particle size threshold of the historical sludge to be dried data completely covers the particle size of the sludge to be dried, if so, executing S1-4-3, otherwise, retaining the particle size of the current sludge to be dried, and updating the historical sludge to be dried database with the particle size of the sludge to be dried that is not covered, and returning to S1-3; S1-4-3. Determine whether the viscosity threshold of the historical sludge to be dried data completely covers the viscosity of the sludge to be dried. If so, use the initial data characteristics of the sludge to be dried as the characteristics of the sludge to be dried. Otherwise, retain the current viscosity of the sludge to be dried, use the corresponding viscosity of the sludge to be dried that is not covered to update the historical sludge to be dried database, and return to S1-3.

4. The self-adaptive photothermal synergistic sludge drying method according to claim 1 is characterized in that: The solar thermal energy data of the sludge dryer obtained by using solar collectors and high and low temperature heat pumps include: S2-1. Obtain solar energy intensity using sensor equipment; S2-2, obtaining a first historical solar energy intensity threshold and a second historical solar energy intensity threshold as a historical solar energy intensity threshold according to the solar energy intensity and the corresponding historical solar energy intensity; S2-3, based on the historical solar energy intensity threshold and the solar energy intensity, using the solar collector and the high and low temperature heat pump to obtain the photothermal energy data of the sludge dryer; The first historical solar energy intensity threshold is greater than the second historical solar energy intensity threshold.

5. The self-adaptive photothermal synergistic sludge drying method according to claim 4 is characterized in that: Acquiring the photothermal energy data of the sludge dryer based on the historical solar energy intensity threshold and the solar energy intensity by using the solar collector and the high and low temperature heat pump includes: S2-3-1, determine whether the solar energy intensity is consistent with the first historical solar energy intensity threshold value, if so, switch the solar collector to the high-temperature heat pump outlet of the high-temperature heat pump for heating, and use the solar collector and the high-temperature heat pump to obtain the solar energy source and the hot air waste heat as the photothermal energy data of the sludge dryer, otherwise, execute S2-3-2; S2-3-2, determine whether the solar energy intensity is consistent with the second historical solar energy intensity threshold value, if so, switch the solar collector to the high and low temperature heat pump intermediate cycle heating, and use the solar collector and the high and low temperature heat pump to obtain the regenerated water source heat energy, the solar energy effective heat source and the hot air waste heat as the photothermal energy data of the sludge dryer, otherwise, directly use the regenerated water source heat energy and the hot air waste heat of the high and low temperature heat pump as the photothermal energy data of the sludge dryer; Among them, the effective solar heat source is the solar energy intensity collected by the solar collector, and the hot air waste heat is the energy obtained by using the condenser and the high and low temperature heat pump according to the waste heat generated by the dried sludge during the drying process of the dried sludge to obtain the dried sludge.

6. The self-adaptive photothermal synergistic sludge drying method according to claim 5 is characterized in that: Constructing a photothermal synergistic drying model based on the characteristics of the sludge to be dried and the photothermal energy data of the sludge dryer includes: S3-1, using the light and heat energy data of the sludge dryer to obtain the state parameters of the sludge dryer; S3-2, obtaining the sludge dryer operation parameters based on the sludge dryer state parameters and utilizing the characteristics of the sludge to be dried; S3-3. Construct the photothermal synergistic drying model according to the operating parameters of the sludge dryer.

7. The self-adaptive photothermal synergistic sludge drying method according to claim 6 is characterized in that: Using the light and heat energy data of the sludge dryer to obtain the heat pump-sludge dryer state parameters includes: S3-1-1, determine whether the solar thermal energy data of the sludge dryer contains the thermal energy of the recycled water source, if so, execute S3-1-2, otherwise, obtain the first temperature parameter, the first humidity parameter and the first pressure parameter as the state parameter of the sludge dryer according to the effective solar heat source and the hot air waste heat; S3-1-2. Determine whether the solar thermal energy data of the sludge dryer contains the effective solar energy heat source. If so, obtain the second temperature parameter, the second humidity parameter and the second pressure parameter as the state parameters of the sludge dryer according to the effective solar energy heat source, the recycled water source heat energy and the hot air waste heat. Otherwise, obtain the third temperature parameter, the third humidity parameter and the third pressure parameter as the state parameters of the sludge dryer according to the recycled water source heat energy and the hot air waste heat.

8. The self-adaptive photothermal synergistic sludge drying method according to claim 7 is characterized in that: Constructing the photothermal synergistic drying model according to the operating parameters of the sludge dryer includes: S3-3-1, obtaining the current time as the continuous starting time t of the sludge dryer operation parameters; S3-3-2, obtaining the operating parameters of the sludge dryer at the continuous starting time t as a training set; S3-3-3, according to the sludge dryer operating parameters at the continuous starting time t, obtain the sludge dryer operating parameters at time t+1 and time t+2 as the first verification set and the second verification set respectively; S3-3-4, taking the training set as input, and the sludge drying result corresponding to the training set as output, and training based on the deep learning network to build an initial model of photothermal synergistic drying; S3-3-5, inputting the first verification set and the second verification set into the photothermal synergistic drying initial model to obtain a first sludge drying result and a second sludge drying result; S3-3-6. Determine whether the first sludge drying result is completely consistent with the second sludge drying result. If so, use the photothermal synergistic drying initial model as the photothermal synergistic drying model. Otherwise, update the training set according to the first sludge drying result and the second sludge drying result, and return to S3-3-4.

9. The self-adaptive photothermal synergistic sludge drying method according to claim 8, characterized in that: Processing the sludge to be dried based on the photothermal synergistic drying model to obtain the sludge drying result includes: S4-1, using the photothermal synergistic drying model to process the sludge to be dried to obtain basic drying results of the sludge to be dried as the first sludge basic drying result, the second sludge basic drying result and the third sludge basic drying result respectively; S4-2, determining whether the first sludge basic drying result, the second sludge basic drying result and the third sludge basic drying result are completely the same, if so, using the first sludge basic drying result, the second sludge basic drying result and the third sludge basic drying result as the sludge drying result, otherwise, executing S4-3; S4-3, determine whether the first sludge basic drying result, the second sludge basic drying result and the third sludge basic drying result are completely different. If so, update the training set according to the first sludge basic drying result, the second sludge basic drying result and the third sludge basic drying result, and return to S3-3-4; otherwise, obtain the basic drying results of the different corresponding sludges to be dried and the basic drying results of the same corresponding sludges to be dried, and execute S4-4; S4-4, respectively obtaining a first dried sludge moisture content and a second dried sludge moisture content according to the basic drying results of the different corresponding sludges to be dried and the basic drying results of the same corresponding sludges to be dried; S4-5. Determine whether the moisture content of the first sludge to be dried is less than or equal to the moisture content of the second sludge to be dried. If so, use the first sludge basic drying result, the second sludge basic drying result and the third sludge basic drying result as the sludge drying result; otherwise, update the training set according to the different basic drying results of the corresponding sludge to be dried, and return to S3-3-4.

10. The self-adaptive photothermal synergistic sludge drying method according to claim 9, characterized in that: Acquiring photothermal synergistic drying sludge according to the sludge drying result includes: S5-1, obtaining the moisture content of the dried sludge using the sludge drying result; S5-2, obtaining a historical dried sludge moisture content threshold value according to the dried sludge moisture content and the corresponding historical dried sludge moisture content; S5-3. Determine whether the moisture content of the dried sludge is less than the historical dried sludge moisture content threshold. If so, use the sludge drying result as the photothermal synergistic dried sludge. Otherwise, use the sludge drying result as the sludge to be dried, and return to S4-1.

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