Energy self-supply system and method for sewage treatment of immigrant placement site based on waste heat recovery

Abstract

The invention provides an immigrant installation site sewage treatment energy self-supply system and method based on waste heat recovery, and the system comprises a waste heat collection module which is used for recovering various waste heat energy at an immigrant installation site; the waste heat storage module is used for temporarily storing the waste heat energy recovered by the waste heat collection module; the sewage treatment module is used for carrying out sewage treatment by utilizing various waste heat; and the energy self-supply module is used for converting renewable energy generated in the sewage treatment process into electric energy or heat energy and converting waste heat energy into electric energy. According to the system, various waste heat energy of immigrant settlement sites is collected through the waste heat collection module and allocated to the sewage treatment module and the energy self-supply module for use, heat energy in sewage treatment is supplemented, sewage treatment is achieved, external energy dependence is reduced, waste heat and renewable energy generated in the sewage treatment process are converted into electric energy, and the electric energy is converted into electric energy. Energy self-supply is achieved, and energy use is optimized.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment, and particularly relates to a sewage treatment energy self-supply system and method for resettlement sites based on waste heat recovery. Background Art

[0002] Sewage treatment at resettlement sites is often carried out through decentralized sewage treatment methods. Decentralized sewage treatment mainly relies on solar energy or diesel generators as energy sources. When using solar energy as an external energy source, expensive energy storage equipment needs to be equipped to ensure continuous operation, resulting in high sewage treatment costs. Diesel generators, on the other hand, face high fuel consumption and pollution. In addition, along with the energy demand of other equipment at resettlement sites, continuous external energy input is required at resettlement sites, showing a strong dependence on external energy. At resettlement sites, a large amount of waste heat energy is often generated during the use or generation of electric energy. This waste heat energy often naturally dissipates into the surrounding air without being collected and used, causing energy waste. Summary of the Invention

[0003] In order to solve the problems of strong energy dependence and waste of waste heat resources in sewage treatment at resettlement sites, the invention provides a sewage treatment energy self-supply system and method for resettlement sites based on waste heat recovery.

[0004] To achieve the above object, the invention provides the following technical solutions: The invention proposes a sewage treatment energy self-supply system for resettlement sites based on waste heat recovery, comprising: A waste heat collection module for recovering various waste heat energies at resettlement sites; A waste heat storage module for temporarily storing the waste heat energy recovered by the waste heat collection module; A sewage treatment module for treating sewage using various waste heats; An energy self-supply module for converting the renewable energy generated during sewage treatment into electric energy or heat energy, and converting waste heat energy into electric energy.

[0005] Preferably, the waste heat energy recovered by the waste heat collection module includes one or more of cooking waste heat energy, generator waste heat energy, and solar heat collection waste heat energy.

[0006] Preferably, the waste heat collection module includes a cooking heat exchanger, a generator heat exchanger, and a solar waste heat exchanger. Among them, the cooking heat exchanger, the generator heat exchanger, and the solar waste heat exchanger are one of coil heat exchangers or plate heat exchangers.

[0007] Preferably, the waste heat storage module includes a phase change material heat storage tank, a heat display unit, an input control unit, and an output control unit; Among them, the phase change material heat storage tank is used to temporarily store the waste heat energy; The heat display unit is used to display the temperature of the waste heat energy in the phase change material heat storage tank; The input control unit is used to detect the temperature of the waste heat energy input into the phase change material heat storage tank, and based on the detected temperature, input it into the waste heat storage area set in the phase change material heat storage tank; The output control unit is used to obtain the temperature of the waste heat storage area in the phase change material heat storage tank, and based on the temperature, allocate it to the sewage treatment module or the energy self - supply module.

[0008] Preferably, the output control unit includes a temperature detection sub - unit, a allocation sub - unit, and a transmission sub - unit; Among them, the temperature detection sub - unit is used to obtain the temperature of the waste heat storage area in the phase change material heat storage tank; The allocation sub - unit is used to generate an allocation signal based on the temperature; The transmission sub - unit is used to allocate the waste heat in the waste heat storage area of the phase change material heat storage tank to the sewage treatment module or the energy self - supply module after identifying the allocation signal.

[0009] Preferably, the sewage treatment module includes at least one treatment sub - module; The treatment sub - module includes: an anaerobic digestion tank unit, an evaporation unit, and a membrane distillation unit; Among them, the anaerobic digestion tank unit is connected to the waste heat storage module and is used to maintain the sewage reaction temperature in sewage treatment at 35 - 55 °C by using waste heat energy; The evaporation unit is connected to the waste heat storage module and is used to evaporate sewage by using waste heat energy; The membrane distillation unit is connected to the waste heat storage module and is used to desalinate and purify sewage by using waste heat energy.

[0010] Preferably, the energy self - supply module includes a biogas utilization unit, a waste heat - to - electricity conversion unit, and an allocation unit; Among them, the biogas utilization unit is used to convert the renewable energy generated during sewage treatment into electric energy or heat energy; The waste heat - to - electricity conversion unit is used to convert waste heat energy into electric energy; The distribution unit is used to allocate heat energy and waste heat energy based on the power of heat - using devices, and allocate electric energy based on the power of electric - using devices.

[0011] Preferably, the energy self - supply module further includes a solar power generation unit, which is used to convert light energy into electric energy.

[0012] The present invention proposes a method for self - supplying energy for sewage treatment in resettlement sites based on waste heat recovery, which is applied to the above - mentioned sewage treatment energy self - supply system for resettlement sites based on waste heat recovery, and includes the following steps: Collect the waste heat energy of the resettlement site through the waste heat collection module, and transmit the recovered waste heat energy to the waste heat storage module for storage; Identify the temperature data of the waste heat energy stored in the storage module, generate a deployment signal based on the temperature data; and transmit the waste heat energy stored in the waste heat storage module to the sewage treatment module or the energy self - supply module based on the deployment signal; The sewage treatment module receives the waste heat energy for sewage treatment, and generates renewable energy during the sewage treatment process; The energy self - supply module receives the waste heat, converts the waste heat energy into electric energy, and obtains renewable energy, converts the renewable energy into electric energy or heat energy, and distributes electric energy and heat energy based on the power of the devices used by users.

[0013] Preferably, generating the deployment signal based on the temperature data includes: If the temperature is higher than 100 °C, then generate an energy self - supply deployment signal; If the temperature is lower than 100 °C, then generate a sewage treatment deployment signal.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention proposes a sewage treatment energy self - supply system for resettlement sites based on waste heat recovery. This system collects various waste heat energies of the resettlement site through the waste heat collection module, stores them through the waste heat storage module, and then deploys them to the sewage treatment module and the energy self - supply module for use. The heat energy in sewage treatment is supplemented by the sewage treatment module to increase the temperature of the anaerobic digester, promote the production of renewable energy, realize the treatment of sewage, reduce the dependence on external energy. In addition, through the energy self - supply module, the waste heat and the renewable energy generated during the sewage treatment process are converted into electric energy, realizing the self - supply of heat energy and electricity, reducing carbon emissions and operation and maintenance costs, replacing the external energy supply for sewage treatment at the resettlement site, and reducing the dependence on the power grid or diesel.

[0015] Furthermore, the waste heat energy recovered by the waste heat collection module in this system includes one or more of cooking waste heat energy, generator waste heat energy, and solar thermal collection waste heat energy, which is transmitted to the sewage treatment module and the energy self - supply module for use, reducing energy waste, and at the same time reducing the input of external energy at the resettlement site, realizing the self - supply of heat energy and electricity, and reducing the dependence on external energy.

[0016] Furthermore, the waste heat storage module of the present system sets up multiple independent waste heat storage areas in the phase change material heat storage tank to store waste heat energy at different temperatures, which is convenient for subsequent allocation. Moreover, the multiple independently set waste heat storage areas can prevent heat transfer between waste heat energies, thereby avoiding the formation of waste heat energy at a single temperature and affecting subsequent allocation.

[0017] Furthermore, in the present system, the output control unit allocates the waste heat energy stored in the waste heat storage area to the sewage treatment module or the energy self-supply module based on the temperature of the waste heat storage area, realizing the cascade utilization of waste heat energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a system block diagram of the sewage treatment energy self-supply system for immigrant resettlement sites based on waste heat recovery provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature and not restrictive.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0021] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0022] In the present invention, unless otherwise clearly defined or limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In the present invention, unless otherwise clearly defined or limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0024] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0025] In the resettlement site for immigrants, the waste heat generated in daily life, such as cooking waste heat and generator waste heat, often dissipates into the air without being utilized, thus causing a waste of energy. At the same time, in the resettlement site for immigrants, during the sewage treatment process, the heating of sewage often relies on external power supply, making the sewage treatment highly dependent on external energy.

[0026] To address the above problems, the present invention proposes an energy self - supply system for sewage treatment in immigrant resettlement sites based on waste heat recovery, as Figure 1 shown, which includes a waste heat collection module, a waste heat storage module, a sewage treatment module, and an energy self - supply module; Among them, the waste heat collection module is used to recover various waste heat energies at the immigrant resettlement site; The waste heat storage module is used to temporarily store the waste heat energy recovered by the waste heat collection module; The sewage treatment module is used to treat sewage by using various waste heats; The energy self - supply module is used to convert the renewable energy generated during the sewage treatment process into electrical energy or heat energy, and convert the waste heat energy into electrical energy.

[0027] In this system, the waste heat collection module recovers the waste heat energy generated from cooking waste heat, generator waste heat, etc. in daily life within the resettlement site, transports this waste heat energy to the waste heat storage module for storage, and based on the temperature of the waste heat energy, transmits it to the sewage treatment module and the energy self - supply module for corresponding use, realizing the recycling of waste heat. At the same time, during the sewage treatment process, the supply of external electric energy can be reduced, the energy utilization rate is improved, and the dependence on external energy is reduced.

[0028] Specifically, the waste heat collection module includes a cooking heat exchanger, a generator heat exchanger, and a solar waste heat exchanger. The cooking heat exchanger, the generator heat exchanger, and the solar waste heat exchanger are respectively installed on the corresponding devices for waste heat energy collection. The waste heat energy that the waste heat collection module is used to recover includes various waste heat energies such as cooking waste heat energy, generator waste heat energy, and solar heat collection waste heat energy. Among them, the cooking heat exchanger, the generator heat exchanger, and the solar waste heat exchanger are one of the coil - type heat exchangers or plate - type heat exchangers. Through the waste heat collection module, the collection of various waste heat energies is realized, the waste heat collection efficiency is improved, and the impact of waste heat energy on the surrounding environment is reduced.

[0029] Specifically, the waste heat storage module includes a phase - change material heat storage tank, a heat display unit, an input control unit, and an output control unit. Among them, the phase - change material heat storage tank is connected to the input control unit and is used to temporarily store the waste heat energy transmitted by the input control unit. In the phase - change material heat storage tank, heat absorption is carried out through the phase - change material (PCM). During the heat absorption process, it changes from a solid state to a liquid state, and when releasing heat, it changes from a liquid state to a solid state. This process can realize the stable storage and release of heat energy. The phase - change material can absorb and release heat energy at different temperatures, ensuring the storage performance of waste heat. And multiple independent waste heat storage areas are set in the phase - change material heat storage tank, and different temperatures of waste heat energy are stored in the multiple independent waste heat storage areas, which is convenient for subsequent allocation. Moreover, the multiple independently set waste heat storage areas can prevent the transfer of heat energy between waste heat energies, thereby forming waste heat energy of a single temperature, making the system can only carry out a single allocation, that is, simply transport heat energy to the sewage treatment module or the energy self - supply module.

[0030] The heat display unit is connected to the phase - change material heat storage tank. The heat display unit corresponds one - to - one with the independent waste heat storage area and is used to display the temperature of the waste heat energy stored in the independent waste heat storage area in the phase - change material heat storage tank. The input control unit is connected to the waste heat collection module and is used to detect the temperature of the waste heat energy input into the phase - change material heat storage tank and store it in the waste heat storage area in the phase - change material heat storage tank based on the detected temperature. The output control unit is respectively connected to the sewage treatment module, the energy self - supply module, and the phase - change material heat storage tank, and is used to obtain the temperature data of the waste heat storage area in the phase - change material heat storage tank, and allocate it to the sewage treatment module or the energy self - supply module based on the temperature data.

[0031] Specifically, the output control unit includes a temperature detection sub - unit, a deployment sub - unit, and a transmission sub - unit; Among them, the temperature detection sub - unit is connected to the heat display unit and is used to obtain the temperature of the waste heat storage area in the phase - change material heat storage tank; the deployment sub - unit is used to generate a deployment signal based on the temperature, that is, when the obtained temperature does not exceed 100 °C, an energy self - supply deployment signal is generated; if the temperature does not exceed 100 °C, a sewage treatment deployment signal is generated; the transmission sub - unit is used to, after identifying the deployment signal, allocate the waste heat stored in the waste heat storage area of the phase - change material heat storage tank to the sewage treatment module or the energy self - supply module, that is, identify the sewage treatment deployment signal and the energy self - supply deployment signal, and based on the energy self - supply deployment signal, allocate the waste heat stored in the corresponding waste heat storage area to the energy self - supply module for use, and based on the sewage treatment deployment signal, allocate the waste heat stored in the corresponding waste heat storage area to the sewage treatment module for use.

[0032] Specifically, the sewage treatment module includes at least one treatment sub - module, and the treatment sub - module includes: an anaerobic digestion tank unit, an evaporation unit, and a membrane distillation unit; Among them, the anaerobic digestion tank unit is connected to the transmission sub - unit and is used to obtain the waste heat energy transmitted by the transmission sub - unit, and use the waste heat energy to maintain the sewage reaction temperature in sewage treatment at 35 - 55 °C, so that the sewage collected by the anaerobic digestion tank unit can stably carry out anaerobic digestion, that is, through the process of decomposing organic matter by anaerobic microorganisms, the organic matter in the sewage can be effectively converted into biogas; the activity of microorganisms is improved, and the decomposition process of organic matter can also be accelerated, thereby increasing the biogas production. Biogas can be further used as energy, improving the utilization rate of resources and reducing the dependence on external energy.

[0033] The evaporation unit is connected to the transmission sub - unit and is used to evaporate sewage using waste heat energy, that is, the water in the sewage is heated and evaporated, and purified water is obtained through the condensation process. By recovering low - grade waste heat for water evaporation, energy consumption can be reduced and the reuse efficiency of water resources can be improved.

[0034] The membrane distillation unit is connected to the transmission sub - unit and is used to desalinate and purify sewage using waste heat energy. Through the hydrophobic property of the membrane, the desalination and purification of sewage are realized by using the temperature difference on both sides of the membrane. The waste heat heats the sewage, increasing the temperature difference of the membrane. Water vapor passes through the micropores of the membrane instead of water molecules, so that the salts and impurities in the water can be effectively separated, and finally purified water is obtained, enabling the sewage to be purified, reducing the sewage discharge at the resettlement site, and thus reducing the water resource consumption at the resettlement site.

[0035] Specifically, the energy self-supply module includes a biogas utilization unit, a waste heat power conversion unit, and a distribution unit; Among them, the biogas utilization unit is connected to the anaerobic digestion tank unit through a pipeline and is used to convert the renewable energy generated during the sewage treatment process into electric energy or heat energy; in this embodiment, the biogas utilization unit is a micro gas turbine, a combustion platform or a fuel cell, realizing self-sufficiency of energy, reducing the dependence on external energy, and being able to effectively support the energy demand in the resettlement site.

[0036] The waste heat power conversion unit is connected to the transmission subunit and is used to convert waste heat energy into electric energy, that is, to obtain the waste heat energy with a temperature exceeding 100 °C transmitted by the transmission subunit and convert the waste heat energy into electric energy, which not only improves the energy use efficiency, but also reduces the dependence on traditional energy and enhances the sustainability of the system. In this embodiment, the waste heat power conversion unit is a thermoelectric generator or a low-pressure steam driver.

[0037] The distribution unit is connected to the waste heat power conversion unit and the biogas utilization unit and is used to allocate heat energy and waste heat energy based on the power of the heat energy using device, and allocate electric energy based on the power of the electric energy using device.

[0038] Furthermore, the energy self-supply module further includes a solar power generation unit for converting light energy into electric energy, which is complementary to the electric energy converted by the waste heat power conversion unit, and improves the dependence of the resettlement site on externally input electric energy.

[0039] The present invention proposes a method for self-supplying energy for sewage treatment in resettlement sites based on waste heat recovery, which is applied to the above-mentioned sewage treatment energy self-supply system based on waste heat recovery and includes the following steps: Collect the waste heat energy of the resettlement site through the waste heat collection module and transmit the recovered waste heat energy to the waste heat storage module for storage; Identify the temperature data of the waste heat energy stored in the storage module, generate a deployment signal based on the temperature data, that is, if the temperature is higher than 100 °C, generate an energy self-supply deployment signal; if the temperature is lower than 100 °C, generate a sewage treatment deployment signal; based on the deployment signal, transmit the waste heat energy stored in the waste heat storage module to the sewage treatment module or the energy self-supply module; The sewage treatment module receives the waste heat energy for sewage treatment and generates renewable energy during the sewage treatment process; The energy self-supply module receives the waste heat, converts the waste heat energy into electric energy, and obtains renewable energy, converts the renewable energy into electric energy or heat energy, and distributes electric energy and heat energy based on the power of the devices used by the user.

[0040] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For a person skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0041] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. A person skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by a person skilled in the art. The above content is only to illustrate the technical idea of the present invention and cannot be used to limit the protection scope of the present invention. Any modification made on the basis of the technical solution according to the technical idea proposed by the present invention falls within the protection scope of the claims of the present invention.

Claims

1. A sewage treatment energy self-supply system for resettlement sites based on waste heat recovery, characterized in that Including: A waste heat collection module for recovering various waste heat energies at the resettlement site; A waste heat storage module for temporarily storing the waste heat energy recovered by the waste heat collection module; A sewage treatment module for treating sewage using various waste heats; An energy self - supply module for converting the renewable energy generated during the sewage treatment process into electric energy or heat energy, and converting waste heat energy into electric energy.

2. The sewage treatment energy self-supply system for resettlement sites based on waste heat recovery according to claim 1, wherein The waste heat energy recovered by the waste heat collection module includes cooking waste heat energy, generator waste heat energy, and solar collector residual heat energy.

3. The sewage treatment energy self-supply system for resettlement sites based on waste heat recovery according to claim 2, wherein The waste heat collection module includes a cooking heat exchanger, a generator heat exchanger, and a solar residual heat exchanger. Among them, the cooking heat exchanger, the generator heat exchanger, and the solar residual heat exchanger are one of coiled tube heat exchangers or plate heat exchangers.

4. The sewage treatment energy self-supply system for resettlement sites based on waste heat recovery according to claim 1, wherein The waste heat storage module includes a phase - change material heat storage tank, a heat display unit, an input control unit, and an output control unit; Among them, the phase - change material heat storage tank is used for temporarily storing the waste heat energy; The heat display unit is used for displaying the temperature of the waste heat energy in the phase - change material heat storage tank; The input control unit is used for detecting the temperature of the waste heat energy input into the phase - change material heat storage tank, and based on the detected temperature, inputting it into the waste heat storage area set in the phase - change material heat storage tank; The output control unit is used for obtaining the temperature of the waste heat storage area in the phase - change material heat storage tank, and based on the temperature, allocating it to the sewage treatment module or the energy self - supply module.

5. The sewage treatment energy self-supply system for resettlement sites based on waste heat recovery according to claim 4, characterized in that The output control unit includes a temperature detection sub - unit, a distribution sub - unit, and a transmission sub - unit; Among them, the temperature detection sub - unit is used for obtaining the temperature of the waste heat storage area in the phase - change material heat storage tank; The distribution sub - unit is used for generating a distribution signal based on the temperature; The transmission sub - unit is used for, after identifying the distribution signal, allocating the waste heat in the waste heat storage area of the phase - change material heat storage tank to the sewage treatment module or the energy self - supply module.

6. The sewage treatment energy self-supply system for resettlement sites based on waste heat recovery according to claim 1, wherein The sewage treatment module includes at least one treatment sub - module; The treatment sub - module includes: an anaerobic digestion tank unit, an evaporation unit, and a membrane distillation unit; Among them, the anaerobic digestion tank unit is connected to the waste heat storage module and is used for using waste heat energy to maintain the sewage reaction temperature in sewage treatment at 35 - 55 °C; The evaporation unit is connected to the waste heat storage module and is used for using waste heat energy to evaporate sewage; The membrane distillation unit is connected to the waste heat storage module and is used for using waste heat energy to desalinate and purify sewage.

7. The sewage treatment energy self-supply system for resettlement sites based on waste heat recovery according to claim 1, characterized in that, The energy self - supply module includes a biogas utilization unit, a waste heat - to - electricity conversion unit, and a distribution unit; Among them, the biogas utilization unit is used for converting the renewable energy generated during the sewage treatment process into electric energy or heat energy; The waste heat - to - electricity conversion unit is used for converting waste heat energy into electric energy; The distribution unit is used for allocating heat energy and waste heat energy based on the power of heat - using devices, and allocating electric energy based on the power of electric - using devices.

8. The sewage treatment energy self-supply system for immigrant resettlement sites based on waste heat recovery according to claim 1, characterized in that The energy self - supply module further includes a solar power generation unit for converting light energy into electric energy.

9. A method for self - supplying energy for sewage treatment in resettlement sites based on waste heat recovery, which is applied to the sewage treatment energy self - supply system for resettlement sites based on waste heat recovery according to any one of claims 1 - 8, characterized in that, Including the following steps: Collecting the waste heat energy of the resettlement site through the waste heat collection module, and transmitting the recovered waste heat energy to the waste heat storage module for storage; The recognition storage module stores the temperature data of the waste heat energy, generates a deployment signal based on the temperature data; and transfers the waste heat energy stored in the waste heat storage module to the sewage treatment module or the energy self - supply module based on the deployment signal. The sewage treatment module receives the waste heat energy for sewage treatment and generates renewable energy during the sewage treatment process. The energy self - supply module receives the waste heat, converts the waste heat energy into electric energy, obtains the renewable energy, converts the renewable energy into electric energy or heat energy, and distributes the electric energy and heat energy based on the power of the user's devices.

10. The method for self - supplying energy for sewage treatment in resettlement sites based on waste heat recovery according to claim 9, characterized in that, The generation of the deployment signal based on the temperature data includes: If the temperature is higher than 100 °C, an energy self - supply deployment signal is generated. If the temperature is lower than 100 °C, a sewage treatment deployment signal is generated.

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