Aeration heating device based on PV / T photovoltaic-thermal system

Abstract

The aeration and heating device based on a PV / T photovoltaic thermal system involves the cross-disciplinary technology of environmental protection, energy conservation, and new energy applications. It aims to solve the problem of low wastewater temperature affecting microbial activity and wastewater treatment efficiency in cold or extreme weather conditions in northern regions, while simultaneously achieving comprehensive energy utilization and energy conservation and carbon reduction. This device includes PV / T photovoltaic thermal modules, a hot water storage tank, a circulating water pump, an aeration blower and heating device, and a water-to-water heat exchanger, forming a combined heat and power system. The PV / T modules generate heat to supply electricity and heat the circulating water. The circulating water, after being stored in the hot water storage tank, is used for aeration heating, user heating, and domestic hot water supply. The system uses a temperature difference start / stop controller to automatically start and stop the circulating water pump, adjusting heating based on temperature feedback from the aeration tank units to ensure optimal microbial activity. This achieves water temperature control during wastewater treatment, improves treatment efficiency, and reduces energy consumption and carbon emissions, resulting in significant economic and environmental benefits.

Description

Technical Field

[0001] This utility model relates to the cross-technical field of environmental protection, energy conservation and new energy application technologies, and in particular to an aeration heating device based on a PV / T photovoltaic thermal system. Background Technology

[0002] In the field of wastewater treatment technology, water temperature has a significant impact on purification efficiency, especially in aeration tank units. Water temperature, as a key parameter, directly affects microbial activity, dissolved oxygen levels, and overall wastewater treatment efficiency. Different types of microorganisms have varying degrees of adaptability to water temperature; therefore, maintaining a suitable water temperature is crucial for ensuring optimal microbial activity and achieving stable and efficient wastewater treatment.

[0003] In cold northern regions or under extreme weather conditions, the problem of excessively low wastewater temperatures is particularly prominent. This not only reduces the metabolic efficiency of microorganisms and affects the biochemical processes of wastewater treatment, but may also lead to substandard treated water quality and secondary pollution of the environment. Therefore, taking effective measures to maintain the temperature of wastewater treatment water and mitigate the adverse effects of extreme weather has become a significant technical challenge for wastewater treatment plants.

[0004] Traditionally, wastewater treatment plants have used direct heating to maintain the water temperature in aeration tanks. However, this method is not only energy-intensive but also detrimental to achieving energy conservation and carbon reduction goals. With the rapid development of new energy technologies, combining them with existing wastewater treatment technologies to solve the water temperature problem in a more environmentally friendly and efficient way has become a current research hotspot.

[0005] In recent years, various technical solutions have been proposed to address water temperature issues in wastewater treatment processes. For example, CN209778434U discloses a heating system for aeration tank water. This system uses solar collectors and a gas-fired boiler as heat sources, heating the aeration tank water through a temperature regulator to ensure the normal physiological activities of aerobic microorganisms. Although this system achieves energy conservation and emission reduction to some extent, it still relies on traditional energy sources (such as natural gas) as auxiliary heat sources, failing to fully utilize renewable energy.

[0006] On the other hand, CN215765325U discloses a heating system combining a PVT heat pump and a water source heat pump. This system generates electricity through PVT panel modules and uses their surface heat for heating. It also integrates a water source heat pump unit and an auxiliary air source heat pump unit to achieve solar-powered combined heat and power and meet year-round heating and water supply needs. However, this system is mainly applied to building heating and hot water supply, and does not directly address water temperature control in wastewater treatment processes. Furthermore, its system structure is relatively complex and may not be suitable for all wastewater treatment scenarios.

[0007] Although the above-mentioned existing technical solutions have solved the problem of water temperature control in the wastewater treatment process to some extent, they still have the following defects and shortcomings:

[0008] Energy efficiency needs to be improved: Existing systems rely heavily on traditional energy sources as auxiliary heat sources and fail to make full use of renewable energy, resulting in low energy efficiency.

[0009] Complex system structure: Some systems have relatively complex structures, which increases the cost of operation and maintenance, and may not be suitable for all wastewater treatment scenarios.

[0010] Insufficient adaptability: Existing systems may lack adaptability to different climatic conditions, water quality conditions and treatment needs, and cannot provide customized solutions.

[0011] Therefore, this invention proposes an aeration heating device based on a PV / T photovoltaic thermal system, aiming to overcome the defects and shortcomings of the existing technology. This system integrates solar photovoltaic thermal (PV / T) technology with aeration heating technology, converting solar energy into heat and electricity through PV / T photovoltaic thermal modules, providing a stable heat source for the aeration heating system, while simultaneously enabling self-consumption of electricity or grid connection. This innovative technical solution not only effectively improves wastewater treatment efficiency but also significantly reduces energy consumption, exhibiting higher energy utilization efficiency and better adaptability, providing a new solution for energy conservation and emission reduction in the wastewater treatment field. Summary of the Invention

[0012] The technical problem to be solved by this invention is to provide an aeration heating device based on a PV / T photovoltaic thermal system, which solves the problem in the field of wastewater treatment technology, especially in cold northern regions or under extreme weather conditions, where the low temperature of wastewater treatment water affects the activity of microorganisms, dissolved oxygen content and wastewater treatment efficiency, and overcomes the limitations of existing technologies such as difficulty in maintaining water temperature and high energy consumption; at the same time, this invention is also committed to achieving comprehensive energy utilization to meet the current goals of energy conservation and carbon reduction in wastewater treatment plants.

[0013] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is an aeration heating device based on a PV / T photovoltaic thermal system, including a PV / T photovoltaic thermal module, a hot water storage tank, and a first circulating water pump, which are connected in sequence to form a circulating heating system to provide heat for the aeration blower heating system; the hot water storage tank is connected to the second circulating water pump, the aeration heating device, the water-to-water heat exchanger, and the domestic hot water system through pipelines, and the second circulating water pump and the aeration heating device are connected to the aeration tank unit.

[0014] In a preferred embodiment, the PV / T photovoltaic thermal module generates electricity and connects to the power grid or the end of the power consumption through a line, thereby realizing the self-generation and self-consumption of electricity or the sale of electricity to the grid.

[0015] In a preferred embodiment, the circulating heating system further includes a first start-stop controller, which is a temperature difference start-stop controller. The temperature difference start-stop controller is electrically connected to the temperature sensors in the PV / T photovoltaic thermal module, the first circulating water pump, and the hot water storage tank, and is used to control the start and stop of the first circulating water pump according to the temperature difference between the inlet and outlet of the PV / T photovoltaic thermal module.

[0016] In a preferred embodiment, the hot water storage tank is connected to the aeration heating device, the water-to-water heat exchanger, and the domestic hot water system via pipelines, and is equipped with a first shut-off valve, a second shut-off valve, and a third shut-off valve to control the flow direction of the hot water.

[0017] In a preferred embodiment, the hot water storage tank is connected to the user's heating system via a water-to-water heat exchanger. The user's heating system receives heat energy from the hot water storage tank and provides heating services to the user. The user's heating system can be adjusted according to user needs or the season.

[0018] In a preferred embodiment, the aeration blower heating system includes a second circulating water pump and an aeration heating device, both of which are connected to the aeration tank unit and the hot water storage tank.

[0019] In a preferred embodiment, the aeration heating device includes a heating coil and an aeration blower. After being heated by the heating coil, the aeration is aerated in the aeration tank unit by the aeration blower.

[0020] In a preferred embodiment, the aeration tank unit is equipped with a temperature feedback device and a second start-stop controller. The temperature feedback device is used to determine whether the temperature has reached the optimal level for microbial activity and feeds the signal back to the second start-stop controller. The second start-stop controller controls the start and stop of the second circulating water pump according to the signal.

[0021] In a preferred embodiment, the domestic hot water system is directly connected to the hot water storage tank via a pipe, receives hot water from the tank, and provides domestic hot water to users. The domestic hot water system can open or close the third shut-off valve according to user needs or the season.

[0022] In a preferred embodiment, the device further includes a control center, which is electrically connected to the first circulating water pump, the second circulating water pump, the first start-stop controller of the PV / T photovoltaic thermal module, the temperature feedback device and the second start-stop controller in the aeration tank unit, and is used to control the start-stop and working status of each component according to system requirements.

[0023] In the preferred embodiment, a temperature sensor installed inside the hot water storage tank is used to monitor the water temperature and transmit the temperature signal to the control center and / or the first start-stop controller.

[0024] In the preferred embodiment, the hot water storage tank is connected to the municipal tap water supply. When the water level in the hot water storage tank is insufficient, the tap water supply will replenish the water. The hot water storage tank is also equipped with an automatic air vent valve and a tank pressure relief valve to ensure the safe operation of the system.

[0025] In the preferred embodiment, the users of the user heating system are not limited to residential buildings, commercial buildings, and sewage treatment plant users, but may also include other types of buildings or facilities, such as surrounding residential areas, and the PV / T photovoltaic thermal modules can be installed within the plant area as a combined heat and power system for the sewage treatment plant.

[0026] The aeration heating device based on a PV / T photovoltaic thermal system provided by this utility model has the following beneficial effects:

[0027] 1. This utility model solves the problem in the field of wastewater treatment technology, especially in cold northern regions or under extreme weather conditions, where low wastewater temperature affects microbial activity, dissolved oxygen content, and wastewater treatment efficiency, and overcomes the limitation of existing technologies where water temperature is difficult to maintain.

[0028] 2. This utility model combines PV / T photovoltaic thermal technology with aeration heating technology to achieve combined heat and power, improve energy utilization efficiency, and meet the current goals of energy conservation and carbon reduction in sewage treatment plants.

[0029] 3. This utility model achieves comprehensive energy utilization and further improves energy efficiency by combining the dual functions of photovoltaic and solar thermal power generation and thermal energy utilization.

[0030] 4. This utility model adopts automatic control equipment such as a temperature difference start-stop controller, a temperature feedback device, and a start-stop controller to automatically adjust the start and stop of the heating device according to the temperature of the sewage in the aeration tank, thereby maximizing the utilization of energy.

[0031] 5. This utility model adopts a temperature difference start-stop control strategy, which intelligently controls the start and stop of the circulating water pump based on the real-time monitored water temperature parameters, making it more precise and efficient than traditional fixed threshold control.

[0032] 6. This utility model of aeration heating system is not only suitable for sewage treatment plants, but can also provide heating and domestic hot water for surrounding residents or buildings, and has broad application prospects.

[0033] 7. This utility model enhances the activity of microorganisms by heating the wastewater in the aeration tank, thereby accelerating the biochemical process of wastewater treatment and improving treatment efficiency.

[0034] 8. This utility model utilizes solar energy as the main heat source, reducing dependence on traditional energy sources, lowering energy consumption and carbon emissions, and conforming to the current policy orientation of energy conservation and emission reduction.

[0035] 9. This utility model adopts a modular design concept, with each component connected by pipes and circuits, which facilitates installation, debugging and maintenance, and improves the system's flexibility and scalability.

[0036] 10. The device of this utility model can provide personalized heating and domestic hot water services according to user needs or seasonal changes, thereby improving user experience and satisfaction.

[0037] 11. This utility model achieves efficient and comprehensive utilization of resources and improves energy efficiency through combined heat and power and intelligent control technology, effectively reducing carbon emissions. It has important positive significance for mitigating global warming, meets the technical requirements for energy conservation and carbon reduction in sewage treatment plants, and significantly improves the problem of high energy consumption in sewage treatment plants.

[0038] 12. This utility model achieves intelligent operation of the system through combined heat and power, intelligent control strategy and modular design of PV / T photovoltaic thermal system, and further improves energy utilization efficiency. It has significant technical advantages and environmental benefits and is an important innovation in the field of wastewater treatment technology. Attached Figure Description

[0039] The present invention will be further described below with reference to the accompanying drawings:

[0040] Figure 1 This is a schematic diagram of the structure of the system of this utility model;

[0041] In the diagram: 1. PV / T photovoltaic thermal module; 2. First circulating water pump; 3. Hot water storage tank; 4. First start / stop controller; 5. Second circulating water pump; 6. Aeration heating device; 7. Heating coil; 8. Aeration blower; 9. Aeration tank unit; 10. Temperature feedback device; 11. Second start / stop controller; 12. Water-to-water heat exchanger; 13. User heating system; 14. Heat load; 15. Domestic hot water system; 16. Domestic hot water load; 17. Electricity terminal; 18. First shut-off valve; 19. Second shut-off valve; 20. Third shut-off valve. Detailed Implementation

[0042] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments:

[0043] Example 1

[0044] like Figure 1 As shown in the figure, this embodiment provides an aeration heating device based on a PV / T photovoltaic thermal system. The specific system composition and working process are as follows.

[0045] I. Device Composition:

[0046] The aeration heating device based on the PV / T photovoltaic thermal system in this embodiment mainly includes a PV / T photovoltaic thermal module 1, a first circulating water pump 2, a hot water storage tank 3, a first start / stop controller 4, a second circulating water pump 5, an aeration heating device 6 (including a heating coil 7 and an aeration blower 8), an aeration tank unit 9, a temperature feedback device 10, a second start / stop controller 11, a water-to-water heat exchanger 12, a user heating system 13, a domestic hot water system 15, and components such as a first shut-off valve 18, a second shut-off valve 19, and a third shut-off valve 20.

[0047] II. Workflow:

[0048] 1. Heat energy generation and storage:

[0049] On a clear day, the PV / T photovoltaic thermal module 1 absorbs solar energy, converting it into electricity through photoelectric conversion, and converting it into heat energy through the heat exchange channels on its lower surface.

[0050] The first circulating water pump 2 is started under the control of the first start-stop controller 4; when the temperature difference between the inlet and outlet of the PV / T photovoltaic thermal module 1 is higher than 5℃, the first start-stop controller 4 sends a signal to start the first circulating water pump 2.

[0051] The circulating water is pumped to the PV / T photovoltaic thermal module 1 for heating by the first circulating water pump 2; the heated water is then sent to the hot water storage tank 3 for storage for later use.

[0052] The hot water storage tank 3 is equipped with a temperature sensor to monitor the water temperature in real time and transmit the temperature signal to the first start-stop controller 4. When the water temperature in the hot water storage tank 3 reaches the set value, the first start-stop controller 4 controls the first circulating water pump 2 to stop working to avoid energy waste caused by excessively high water temperature.

[0053] 2. Wastewater treatment heating:

[0054] When the wastewater temperature in aeration tank unit 9 is lower than the set value (such as lower than the optimal microbial activity temperature range), the temperature feedback device 10 detects this change and sends a signal to the second start / stop controller 11.

[0055] After receiving the signal, the second start-stop controller 11 starts the second circulating water pump 5; the second circulating water pump 5 transports the hot water in the hot water storage tank 3 to the heating coil 7 of the aeration heating device 6;

[0056] The hot water in the heating coil 7 heats the air passing through it; the heated air is then drawn in by the aeration blower 8 and sent into the aeration tank unit 9 by the action of the aeration blower 8.

[0057] The heated air comes into full contact with the sewage in aeration tank unit 9, increasing the sewage temperature and thus enhancing the activity of microorganisms and improving sewage treatment efficiency.

[0058] When the wastewater temperature in aeration tank unit 9 reaches the set value, the temperature feedback device 10 sends a signal to the second start-stop controller 11 again, and the second start-stop controller 11 controls the second circulating water pump 5 to stop working to avoid energy waste.

[0059] 3. User heating and domestic hot water:

[0060] The hot water in the hot water storage tank 3 can also provide heat energy to the user's heating system 13 through the water-to-water heat exchanger 12; the water-to-water heat exchanger 12 transfers the heat energy of the hot water storage tank 3 to the circulating water in the heating system, thereby realizing the heating function;

[0061] Users can adjust the temperature and heating time of the heating system according to their own needs; for example, in the cold winter, users can increase the temperature and heating time of the heating system to improve indoor temperature comfort.

[0062] In addition, the hot water in the hot water storage tank 3 can be directly connected to the domestic hot water system 15 through pipes to provide domestic hot water to users; users can open or close the third shut-off valve 20 of the domestic hot water system 15 according to their own needs to control the supply of hot water.

[0063] To ensure sufficient water level in the hot water storage tank 3, the system is also equipped with a water supply pipe connected to the municipal tap water supply; when the water level in the hot water storage tank 3 is lower than the set value, the tap water supply will automatically replenish the water.

[0064] 4. Intelligent control and safety protection:

[0065] The first start-stop controller 4 and the second start-stop controller 11 serve as intelligent control devices for the system, automatically controlling the start and stop of the circulating water pump according to system requirements to maximize energy utilization.

[0066] The hot water storage tank 3 is also equipped with an automatic air vent valve and a water tank pressure relief valve to ensure the safe operation of the system. When the internal pressure of the hot water storage tank 3 is too high, the automatic air vent valve opens to release the pressure. When the water level is too high, the water tank pressure relief valve opens to release the excess water.

[0067] This embodiment uses PV / T photovoltaic thermal module 1 as the heat source, realizing combined heat and power and improving energy utilization efficiency. Intelligent control equipment enables automated system operation, reducing manual operation costs. Simultaneously, the system has comprehensive safety protection measures to ensure stable system operation and safe use by the user.

[0068] Example 2

[0069] In another preferred embodiment, based on the above embodiment 1, the aeration heating device based on the PV / T photovoltaic thermal system in this embodiment is an enhancement of embodiment 1, mainly by adding a control center and an auxiliary air source heat pump unit.

[0070] I. Device Composition:

[0071] The device mainly includes: PV / T photovoltaic thermal module 1, first circulating water pump 2, hot water storage tank 3, first start / stop controller 4, second circulating water pump 5, aeration heating device 6 (including heating coil 7 and aeration blower 8), aeration tank unit 9, temperature feedback device 10, second start / stop controller 11, water-to-water heat exchanger 12, user heating system 13, domestic hot water system 15, first shut-off valve 18, second shut-off valve 19, third shut-off valve 20, control center, and auxiliary air source heat pump unit, etc. The auxiliary air source heat pump unit is connected to the hot water storage tank 3 through pipelines.

[0072] II. Workflow:

[0073] 1. Heat energy generation and storage:

[0074] The process is similar to that in Example 1. The PV / T photovoltaic thermal module 1 absorbs solar energy for photoelectric conversion and thermal energy conversion. The first circulating water pump 2 is started under the control of the first start-stop controller 4 to transport circulating water to the PV / T photovoltaic thermal module 1 for heating. Then the hot water is sent to the hot water storage tank 3 for storage.

[0075] The hot water storage tank 3 is equipped with a temperature sensor that monitors the water temperature in real time and transmits the signal to the first start / stop controller 4 and the control center. The control center adjusts the operating status of the first circulating water pump 2 based on the received signal and system requirements.

[0076] 2. Wastewater treatment heating:

[0077] When the temperature of the wastewater in the aeration tank unit 9 is lower than the set value, the temperature feedback device 10 sends a signal to the second start-stop controller 11, which then starts the second circulating water pump 5 to transport the hot water in the hot water storage tank 3 to the aeration heating device 6 for heating.

[0078] Heated air is sent into aeration tank unit 9 through aeration blower 8 to increase the temperature of wastewater and enhance the activity of microorganisms.

[0079] Unlike Example 1, when the temperature of the hot water in the hot water storage tank 3 is insufficient to meet the heating requirements of wastewater treatment, the control center will receive a relevant signal and start the auxiliary air source heat pump unit. The auxiliary air source heat pump unit uses the heat in the air to heat the hot water in the hot water storage tank 3, ensuring the continuity and stability of wastewater treatment heating.

[0080] 3. User heating and domestic hot water:

[0081] The hot water in the hot water storage tank 3 provides heat energy to the user's heating system 13 through the water-to-water heat exchanger 12, or is directly connected to the domestic hot water system 15 through pipes to provide domestic hot water to the user;

[0082] Users can adjust the temperature and heating time of the heating system, as well as the supply and temperature of domestic hot water, according to their own needs.

[0083] When the water level in the hot water storage tank 3 is lower than the set value, the system will automatically start the water replenishment pipeline to replenish water and ensure the normal operation of the system.

[0084] 4. Intelligent control and centralized management:

[0085] As the core of the system, the control center is electrically connected to various components in the system, such as the first circulating water pump 2, the second circulating water pump 5, the first start-stop controller 4 of the PV / T photovoltaic thermal module 1, the temperature feedback device 10 and the second start-stop controller 11 in the aeration tank unit 9, and the auxiliary air source heat pump unit.

[0086] The control center centrally monitors and manages the working status of each component based on system requirements and received signals. For example, when a fault is detected in a component, the control center will send an alarm signal and take corresponding measures to repair or replace it.

[0087] The control center can also intelligently adjust the system's operating mode based on information such as weather forecasts and user habits to maximize energy utilization and provide the best user experience.

[0088] 5. Safety protection and fault handling:

[0089] The system is equipped with comprehensive safety protection measures, such as automatic air vents and water tank pressure relief valves, to ensure the safe operation of the system.

[0090] When a system malfunctions, the control center will immediately send an alarm signal and take corresponding measures to deal with it. For example, when a malfunction is detected in the first circulating water pump 2 or the second circulating water pump 5, the control center will start the backup circulating water pump to ensure the normal operation of the system. When a leak is detected in the hot water storage tank 3, the control center will immediately close the relevant valves and start the emergency water replenishment procedure.

[0091] This embodiment, based on Embodiment 1, adds a control center and an auxiliary air-source heat pump unit, realizing centralized monitoring and management of the system and diversified heat energy supply. Centralized monitoring and management of all system components through the control center improves system stability and reliability; the addition of the auxiliary air-source heat pump unit further enhances the system's heating capacity, ensuring normal operation under different climatic conditions. Simultaneously, the system also possesses comprehensive safety protection measures and fault response mechanisms, ensuring safe use by users and long-term stable operation of the system.

[0092] Example 3

[0093] In another preferred embodiment, the aeration heating device based on the PV / T photovoltaic thermal system in this embodiment adds a domestic hot water load monitoring module and a remote monitoring module to the aeration heating device based on embodiment 2.

[0094] I. Device Composition:

[0095] The aeration heating device based on the PV / T photovoltaic thermal system in this embodiment is a further integration and optimization based on Embodiment 2. It mainly adds an intelligent temperature control system, a remote monitoring system, and a multi-mode operation strategy. The device mainly includes: a PV / T photovoltaic thermal module 1, a first circulating water pump 2, a hot water storage tank 3, a first start / stop controller 4, a second circulating water pump 5, an aeration heating device 6 (including a heating coil 7 and an aeration blower 8), an aeration tank unit 9, a temperature feedback device 10, a second start / stop controller 11, a water-to-water heat exchanger 12, a user heating system 13, a domestic hot water system 15, a first shut-off valve 18, a second shut-off valve 19, a third shut-off valve 20, a control center, an auxiliary air source heat pump unit, an intelligent temperature control system, and a remote monitoring module (including domestic hot water load monitoring function), etc.

[0096] II. Workflow:

[0097] 1. Heat energy generation and storage:

[0098] Similar to Example 2, the PV / T photovoltaic thermal module 1 absorbs solar energy for photoelectric conversion and thermal energy conversion. The first circulating water pump 2 is started under the control of the first start-stop controller 4 to transport circulating water to the PV / T photovoltaic thermal module 1 for heating. Then the hot water is sent to the hot water storage tank 3 for storage.

[0099] The hot water storage tank 3 is equipped with a temperature sensor that monitors the water temperature in real time and transmits the signal to the first start-stop controller 4, the control center, and the intelligent temperature control system.

[0100] 2. Intelligent temperature control and multi-mode operation:

[0101] The intelligent temperature control system automatically adjusts the system's operating mode based on the water temperature of the hot water storage tank 3, weather forecast information, and the user's set temperature requirements. For example, during sunny days, the intelligent temperature control system may choose to prioritize the use of PV / T photovoltaic thermal modules 1 for heating; at night or on cloudy or rainy days, it may start the auxiliary air source heat pump unit for supplementary heating.

[0102] The domestic hot water load monitoring module (integrated into the remote monitoring module) monitors the flow and temperature of the domestic hot water system in real time, calculates the real-time hot water load, and transmits the data to the control center. The intelligent temperature control system dynamically adjusts the water supply temperature and flow from the hot water storage tank 3 to the domestic hot water system 15 based on the hot water load data to ensure that user needs are met.

[0103] The system supports multiple operating modes, such as manual mode, automatic mode, and energy-saving mode. Users can select the appropriate operating mode through the remote monitoring module 23 and adjust it according to actual needs.

[0104] 3. Wastewater treatment heating:

[0105] When the wastewater temperature in aeration tank unit 9 is lower than the set value, the temperature feedback device 10 sends a signal to the second start-stop controller 11, and the second start-stop controller 11 starts the second circulating water pump 5 to transport the hot water in the hot water storage tank 3 to the aeration heating device 6 for heating.

[0106] Heated air is sent into aeration tank unit 9 through aeration blower 8 to increase the temperature of wastewater and enhance the activity of microorganisms;

[0107] The intelligent temperature control system adjusts the working status of the aeration heating device 6 in real time according to the actual temperature changes in the aeration tank unit 9, ensuring the efficient and stable operation of the sewage treatment process.

[0108] 4. Heating and domestic hot water for users:

[0109] The hot water in the hot water storage tank 3 provides heat energy to the user's heating system 13 through the water-to-water heat exchanger 12, or is directly connected to the domestic hot water system 15 through pipes to provide domestic hot water to the user;

[0110] The domestic hot water load monitoring module (integrated into the remote monitoring module) provides real-time feedback to the intelligent temperature control system based on the hot water usage at the user end. The system then adjusts the water supply strategy accordingly to achieve on-demand heating.

[0111] Users can view the heating and domestic hot water supply in real time through the remote monitoring module and adjust it according to their own needs.

[0112] 5. Remote monitoring and fault early warning:

[0113] The remote monitoring module is integrated into the control center and connects to the system in real time via the Internet or a dedicated network. This module not only monitors the domestic hot water load, but also receives real-time data from various components of the system, such as the temperature of aeration tank unit 9, the power generation efficiency of PV / T photovoltaic thermal module 1, and the operating status of the first circulating water pump 2 and the second circulating water pump 5.

[0114] Data is stored in a local database or uploaded to a cloud server, enabling remote access and management across geographical regions. Users can view system operating status, energy consumption, and fault alarm information anytime, anywhere via mobile apps, web interfaces, and other remote terminals.

[0115] When a system malfunctions or encounters an abnormal situation, the remote monitoring module will immediately send alarm information to the user's terminal device and notify maintenance personnel to handle the situation promptly.

[0116] 6. Safety protection and fault handling:

[0117] The system is equipped with comprehensive safety protection measures, such as automatic air vent valve, water tank pressure relief valve, overcurrent protection, and overtemperature protection, to ensure the safe operation of the system.

[0118] When a system malfunctions, the control center will immediately activate the fault response mechanism, such as automatically switching to backup equipment, shutting down the faulty component, and notifying maintenance personnel to carry out repairs.

[0119] This embodiment of the aeration heating device based on a PV / T photovoltaic thermal system achieves intelligent management and efficient operation by introducing an intelligent temperature control system, a remote monitoring module (including domestic hot water load monitoring function), and a multi-mode operation strategy. The introduction of the domestic hot water load monitoring module allows the system to dynamically adjust the heating strategy according to actual needs, achieving on-demand heating and precise control. The remote monitoring module provides users with convenient remote monitoring and management methods, improving system maintainability and user satisfaction. Simultaneously, the system also possesses comprehensive safety protection measures and fault response mechanisms, ensuring long-term stable operation.

[0120] In a preferred embodiment, the PV / T photovoltaic thermal module 1 generates electricity and connects to the power grid or the power consumption terminal 17 via a line to achieve self-consumption of electricity or grid-connected electricity sales. The above configuration also enables the recovery of heat energy generated by the PV / T photovoltaic thermal module 1, which is then used to supply hot water or heating through a heat exchange system, thereby improving energy utilization efficiency and forming a comprehensive energy system integrating power generation and heating.

[0121] In a preferred embodiment, the circulating heating system further includes a first start-stop controller 4, which is a temperature difference start-stop controller. The temperature difference start-stop controller is electrically connected to the temperature sensors in the PV / T photovoltaic thermal module 1, the first circulating water pump 2, and the hot water storage tank 3. It is used to control the start and stop of the first circulating water pump 2 according to the temperature difference between the inlet and outlet of the PV / T photovoltaic thermal module 1. The above settings can intelligently adjust the system operating status. When the temperature difference between the inlet and outlet of the PV / T photovoltaic thermal module 1 reaches a preset threshold, the first circulating water pump 2 is automatically started or stopped, which effectively improves energy utilization efficiency and ensures the stability and high efficiency of the system.

[0122] In a preferred embodiment, the hot water storage tank 3 is connected to the aeration heating device 6, the water-to-water heat exchanger 12, and the domestic hot water system 15 via pipelines, and is equipped with a first shut-off valve 18, a second shut-off valve 19, and a third shut-off valve 20 to control the flow direction of the hot water. This configuration ensures efficient heat distribution and utilization. When needed, the first shut-off valve 18 opens, allowing hot water to flow to the aeration heating device 6; the second shut-off valve 19 opens, allowing hot water to enter the water-to-water heat exchanger 12; and the third shut-off valve 20 operates, supplying hot water to the domestic hot water system 15.

[0123] In a preferred embodiment, the hot water storage tank 3 is connected to the user heating system 13 via a water-to-water heat exchanger 12. The user heating system 13 receives heat energy from the hot water storage tank 3 to provide heating services to the user. The user heating system 13 can be adjusted according to user needs or season. This configuration not only improves energy efficiency but also ensures the flexibility and comfort of the user heating system 13. In addition, the system is equipped with an intelligent temperature control device that can automatically adjust the heating intensity according to the indoor and outdoor temperature difference, further achieving energy conservation and emission reduction, and creating a more environmentally friendly and energy-saving living environment for users.

[0124] In a preferred embodiment, the aeration and heating system includes a second circulating water pump 5 and an aeration heating device 6, both of which are connected to the aeration tank unit 9 and the hot water storage tank 3. This configuration enables the water in the aeration tank unit 9 to be pumped to the hot water storage tank 3 for heating via the second circulating water pump 5, and the heated water to be aerated and oxygenated via the aeration heating device 6, thereby improving the water activity and optimizing the wastewater treatment effect.

[0125] In a preferred embodiment, the aeration heating device 6 includes a heating coil 7 and an aeration blower 8. After being heated by the heating coil 7, the water is aerated in the aeration tank unit 9 by the aeration blower 8. This configuration not only increases the water temperature of the aeration tank unit 9 and promotes microbial activity, but also increases the dissolved oxygen content in the water during the aeration process, effectively improving the wastewater treatment efficiency and water purification effect.

[0126] In a preferred embodiment, the aeration tank unit 9 is equipped with a temperature feedback device 10 and a second start-stop controller 11. The temperature feedback device 10 is used to determine whether the temperature has reached the optimal range for microbial activity and feeds the signal back to the start-stop controller 11. The start-stop controller 11 controls the start and stop of the second circulating water pump 5 according to the signal. The above settings ensure that the water temperature in the aeration tank is always maintained in the optimal range suitable for microbial growth, effectively improving the wastewater treatment efficiency and microbial degradation capacity, while realizing intelligent control and saving of energy.

[0127] In the preferred embodiment, the domestic hot water system 15 is directly connected to the hot water storage tank 3 via a pipe, receiving hot water from the hot water storage tank 3 to provide domestic hot water to users. The domestic hot water system 15 can open or close the third shut-off valve 20 according to user needs or season. The above settings ensure flexible supply and efficient utilization of hot water. At the same time, by intelligently controlling the opening and closing status of the third shut-off valve 20, not only are personalized user needs met, but energy waste is also effectively avoided, improving the energy efficiency and practicality of the entire hot water supply system.

[0128] In a preferred embodiment, the device further includes a control center, which is electrically connected to the first circulating water pump 2, the second circulating water pump 5, the first start / stop controller 4 of the PV / T photovoltaic thermal module 1, and the temperature feedback device 10 and the second start / stop controller 11 in the aeration tank unit 9. The control center is used to control the start / stop and working status of each component according to system requirements. The above settings not only improve the automation level of the system, but also ensure the efficient collaboration between the PV / T photovoltaic thermal module 1 and the water treatment process. Through real-time temperature and demand monitoring, energy utilization is optimized, and green and intelligent integrated operation of water treatment and energy recovery is achieved.

[0129] In the preferred embodiment, a temperature sensor is installed inside the hot water storage tank 3 to monitor the water temperature and transmit the temperature signal to the controller and / or the first start / stop controller 4. This configuration ensures that the system can sense changes in water temperature in real time and adjust the heating or heat preservation strategy in a timely manner. At the same time, the temperature signal also serves as an important basis for safety warning. Once the water temperature is abnormal, the alarm mechanism is immediately triggered to ensure the stable operation of the system.

[0130] In the preferred embodiment, the hot water storage tank 3 is connected to the municipal tap water supply. When the water level in the hot water storage tank 3 is insufficient, the tap water supply will replenish the water. The hot water storage tank 3 is also equipped with an automatic air vent valve and a water tank pressure relief valve to ensure the safe operation of the system. The above settings can effectively manage the water level and prevent the risk of overpressure. In addition, the hot water storage tank 3 is equipped with a temperature sensor to monitor the water temperature in real time. With the help of the intelligent control system, the heating power is automatically adjusted to achieve a highly efficient and energy-saving hot water supply.

[0131] In the preferred embodiment, the users of the user heating system 13 are not limited to residential buildings, commercial buildings, and sewage treatment plant users, but may also include other types of buildings or facilities, such as surrounding residential areas. Furthermore, the PV / T photovoltaic thermal module 1 can be installed within the plant area as a combined heat and power system for the sewage treatment plant. The above configuration not only improves energy utilization efficiency but also realizes localized energy supply and reduces long-distance transmission losses. At the same time, the combined heat and power system can be flexibly adjusted according to actual needs to ensure that the heating needs of various users are stably met under different seasons and weather conditions.

[0132] In summary, this utility model provides an aeration heating device based on a PV / T photovoltaic thermal system, which innovatively solves the problem in the field of wastewater treatment technology, especially in cold northern regions or under extreme weather conditions, where excessively low wastewater temperature affects microbial activity, dissolved oxygen content, and wastewater treatment efficiency. It effectively overcomes the limitations of existing technologies, such as difficulty in maintaining water temperature and high energy consumption. The device integrates multiple components, including a PV / T photovoltaic thermal module 1, a hot water storage tank 3, a circulating water pump, an aeration blower heating device, and a water-to-water heat exchanger 12, forming a highly efficient and compact circulating heating system. This not only simplifies installation, commissioning, and maintenance but also realizes the dual functions of photovoltaic thermal power generation and thermal energy utilization, providing a comprehensive solution for user-side power supply, heating, and domestic hot water. By introducing intelligent control equipment such as a temperature difference start / stop controller, a temperature feedback device 10, and a start / stop controller, precise control of key components is achieved, significantly improving energy utilization efficiency and system stability. Simultaneously, the device can flexibly adapt to the needs of different users and seasonal changes, providing personalized heating and domestic hot water services. More importantly, this device utilizes renewable solar energy as its primary energy source, reducing reliance on traditional fossil fuels and effectively lowering carbon emissions, aligning with current energy conservation and carbon reduction goals for wastewater treatment plants. Furthermore, the innovative application of PV / T photovoltaic thermal technology, the temperature difference start-stop control strategy, the temperature feedback and start-stop linkage mechanism, the modular design, and the remote monitoring and fault early warning functions collectively constitute the device's core competitiveness, showcasing its unique advantages in technological, economic, and environmental benefits.

Claims

1. An aeration heating device based on a PV / T photovoltaic thermal system, characterized in that: The system includes a PV / T photovoltaic thermal module (1), a hot water storage tank (3), and a first circulating water pump (2), which are connected in sequence to form a circulating heating system to provide heat for the aeration blower heating system. The hot water storage tank (3) is connected to the second circulating water pump (5), the aeration heating device (6), the water-to-water heat exchanger (12), and the domestic hot water system (15) through pipes. The second circulating water pump (5) and the aeration heating device (6) are connected to the aeration tank unit (9).

2. The aeration heating device based on a PV / T photovoltaic thermal system according to claim 1, characterized in that: The PV / T photovoltaic thermal module (1) generates electricity and connects to the power grid or the power consumption terminal (17) through a line to realize the self-generation and self-consumption of electricity or the sale of electricity to the grid.

3. The aeration heating device based on a PV / T photovoltaic thermal system according to claim 2, characterized in that: The circulating heating system also includes a first start-stop controller (4), which is a temperature difference start-stop controller. The temperature difference start-stop controller is electrically connected to the temperature sensors in the PV / T photovoltaic thermal module (1), the first circulating water pump (2) and the hot water storage tank (3), and is used to control the start and stop of the first circulating water pump (2) according to the temperature difference between the inlet and outlet of the PV / T photovoltaic thermal module (1).

4. The aeration heating device based on a PV / T photovoltaic thermal system according to claim 3, characterized in that: The hot water storage tank (3) is connected to the aeration heating device (6), the water-to-water heat exchanger (12) and the domestic hot water system (15) through pipes, and is equipped with a first shut-off valve (18), a second shut-off valve (19) and a third shut-off valve (20) to control the flow direction of hot water.

5. The aeration heating device based on a PV / T photovoltaic thermal system according to claim 4, characterized in that: The hot water storage tank (3) is connected to the user heating system (13) through a water-to-water heat exchanger (12). The user heating system (13) receives heat energy from the hot water storage tank (3) and provides heating services to the user. The user heating system (13) adjusts according to the user's needs or the season.

6. The aeration heating device based on a PV / T photovoltaic thermal system according to claim 5, characterized in that: The aeration blower heating system includes a second circulating water pump (5) and an aeration heating device (6), both of which are connected to the aeration tank unit (9) and the hot water storage tank (3).

7. The aeration heating device based on a PV / T photovoltaic thermal system according to claim 6, characterized in that: The aeration heating device (6) includes a heating coil (7) and an aeration blower (8). After being heated by the heating coil (7), the aeration device is aerated in the aeration tank unit (9) by the aeration blower (8).

8. The aeration heating device based on a PV / T photovoltaic thermal system according to claim 7, characterized in that: The aeration tank unit (9) is equipped with a temperature feedback device (10) and a second start-stop controller (11). The temperature feedback device (10) is used to determine whether the temperature has reached the optimal microbial activity and feeds the signal back to the second start-stop controller (11). The second start-stop controller (11) controls the start and stop of the second circulating water pump (5) according to the signal.

9. The aeration heating device based on a PV / T photovoltaic thermal system according to claim 8, characterized in that: The domestic hot water system (15) is directly connected to the hot water storage tank (3) through a pipe, receives hot water from the hot water storage tank (3), and provides domestic hot water to users. The domestic hot water system (15) opens or closes the third shut-off valve (20) according to user needs or season.

10. The aeration heating device based on a PV / T photovoltaic thermal system according to claim 9, characterized in that: The device also includes a control center, which is electrically connected to the first start-stop controller (4) of the first circulating water pump (2), the second circulating water pump (5), the temperature feedback device (10) and the second start-stop controller (11) in the aeration tank unit (9), and is used to control the start-stop and working status of each component according to system requirements.

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