Source-network-load-storage integrated zero-carbon park resource recycling system and method

Abstract

The invention belongs to the technical field of zero-carbon parks, and discloses a source-network-load-storage integrated zero-carbon park resource recycling system and method. The system comprises a meteorological sensor, a rainwater power generation part, a wastewater power generation part, a generator set, an energy storage part, an impurity pool and an oil collection pool which are matched with one another. The meteorological sensor and the rainwater power generation part are arranged on the plane of the top layer of the building, the waste water power generation part is arranged in each independent space of each building layer, and the generator set, the energy storage part, the impurity pool and the oil collection pool are all located on the bottom layer of the building. Therefore, cyclic utilization of various resources can be effectively achieved, and construction of the zero-carbon park is promoted.

Description

Technical Field

[0001] The present invention relates to the technical field of zero-carbon parks, and in particular to a zero-carbon park resource recycling system and method integrating source, grid, load and storage. Background Art

[0002] A zero-carbon park is a modern industrial park that offsets the total amount of carbon dioxide emissions through clean technology support, carbon recovery technology, energy storage and exchange, etc., in order to achieve "zero emissions" of carbon elements.

[0003] Electricity is the energy foundation for the normal operation of modern industrial parks. How to provide clean electricity is also a key focus in the construction of zero-carbon parks. In the existing technology, there are solutions for using rainwater to generate electricity as a clean electricity supply. For example, the patent document with application number 202211728089.4 provides a system for collecting rainwater on the roof of a building and generating electricity; among them, the rainwater collection structure is improved to increase the rainwater collection rate and increase the falling pressure of rainwater to improve the power generation efficiency.

[0004] However, as disclosed in the above-mentioned prior art, it considers how to improve the efficiency of rainwater power generation. However, in the process of creating a zero-carbon park, considering using rainwater as a driving source for efficient power generation ensures the cleanliness of electricity and avoids the corresponding carbon dioxide emissions caused by power generation. However, it does not take into account that in the creation of a zero-carbon park, it is not enough to just clean the power source itself, but also to consider how to offset the carbon emissions from other aspects to achieve zero carbon emissions for the entire park as a whole. Therefore, when the relevant rainwater power generation solutions in the prior art are applied to the construction of a zero-carbon park, they cannot effectively achieve the goal of zero carbon emissions. Summary of the Invention

[0005] The purpose of the present invention is to provide a zero-carbon park resource recycling system and method that integrates source, grid, load and storage to solve the technical problem that the current rainwater power generation solution cannot be applied to the construction of zero-carbon parks.

[0006] To achieve the above objectives, the present invention proposes the following technical solutions:

[0007] First, this technical solution provides a zero-carbon park resource recycling system that integrates power generation, grid loading, and storage, including:

[0008] A rainwater power generation unit, wherein the rainwater storage tank has an inclined bottom surface, one end of a first miscellaneous pipe is connected to the lower side of the bottom surface of the rainwater storage tank, and the other end is connected to the impurity tank; a filter is embedded in the rainwater inlet of the water inlet pipe, and the rainwater inlet is connected to the external environment and the higher side of the bottom of the rainwater storage tank at the same time; a first solenoid valve is provided between the rainwater inlet and the external environment, and a second solenoid valve is provided between the rainwater inlet and the rainwater storage tank;

[0009] The wastewater power generation unit is placed in an independent space on each floor, wherein the grit and oil trap, water treatment tank and water storage and regulating tank are connected in sequence; one end of the wastewater pipe is connected to the domestic wastewater source, and the other end is connected to the grit and oil trap; one end of the constant flow pipe and the regulating pipe are connected to the upper and lower parts of the water storage and regulating tank respectively, and the other ends are both connected to the water inlet pipe; the pipe between the constant flow pipe inlet and the regulating pipe inlet in the water inlet pipe is set as a hydraulic buffer pipe; the grit and oil trap includes a conical bottom, and one end of the second miscellaneous pipe is connected to the cone top of the grit and oil trap, the bottom of the water treatment tank and the bottom of the water storage and regulating tank respectively, and the other end is connected to the impurity tank; the retractable end of the oil suction pipe extends into the grit and oil trap, and the other end is connected to the oil collecting tank; a liquid level sensor is provided in the grit and oil trap that is communicated with the retractable end; a first flow monitor is provided at the hydraulic buffer pipe, a third solenoid valve is provided at the constant flow pipe, and a fourth solenoid valve is provided at the regulating pipe; the oil collecting tank and the impurity tank are both connected to the biomass treatment tank to obtain biofuel;

[0010] The generator set is connected to the energy storage unit, including a water inlet end connected to the free end of the water inlet pipe and a drainage end connected to the municipal drainage pipe; the water inlet end is provided with a second flow monitor;

[0011] The first flow monitor, the second flow monitor, the meteorological sensor, and the rainfall monitor are all communicatively connected with the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve at the same time.

[0012] Furthermore, a detachable processing module is disposed in the water treatment pool; the processing module includes an activated carbon layer and an acid-base neutralization layer that are alternately arranged in a longitudinal direction.

[0013] Furthermore, oil baffles are longitudinally spaced apart in the sand and oil trap, and a through hole is provided at the junction of each oil baffle and the bottom of the sand and oil trap.

[0014] Furthermore, it includes a photovoltaic panel, which is arranged on the top floor of the building and is electrically connected to the energy storage unit.

[0015] Furthermore, the grit and oil trap, water treatment tank and water storage and regulating tank are arranged adjacent to each other in sequence, the grit and oil trap and the water treatment tank are connected through the bottom, and the water treatment tank and the water storage and regulating tank are connected through the top.

[0016] Furthermore, a fifth solenoid valve is provided at one end of the second row of miscellaneous pipes connected to the sand and oil trap, water treatment tank and water storage and regulating tank; impurity monitors are provided at the bottom of the sand and oil trap, water treatment tank and water storage and regulating tank; each impurity monitor is communicatively connected to each fifth solenoid valve in a one-to-one manner.

[0017] Secondly, this technical solution provides a zero-carbon park resource recycling method that integrates source, grid, load and storage, including:

[0018] When the meteorological sensor determines that there is no rainfall, the first solenoid valve, the second solenoid valve and the fourth solenoid valve are controlled to be closed at the same time, and the third solenoid valve is opened to allow the water in each water storage and regulating tank to flow into the water inlet pipe and the generator set in sequence to generate electricity, and then be discharged through the municipal drainage pipe;

[0019] When rainfall is determined based on the meteorological sensor, if the rainfall is still determined based on the rain monitor to be less than the first rainfall threshold and the accumulated rainfall is less than the first accumulated threshold, electricity is generated based on the water flowing through each constant flow pipe, and the top cover of the rainwater storage tank is closed to prevent rainwater from entering; when the rainfall is determined to be between the first and second rainfall thresholds and the accumulated rainfall is between the first and second accumulated thresholds, the first solenoid valve and the third solenoid valve are controlled to be opened at the same time, and the second and fourth solenoid valves are controlled to be closed at the same time, so as to generate electricity based on the water flowing through each constant flow pipe and external rainfall; when the rainfall is determined to be greater than the second rainfall threshold and the accumulated rainfall is greater than the second accumulated threshold, the first solenoid valve is controlled to be opened, and the second, third and fourth solenoid valves are controlled to be closed at the same time, so as to generate electricity based on external rainfall;

[0020] During the power generation process, when it is determined that power generation is being performed based on the water flowing through each constant flow pipe, if it is determined that the second real-time flow rate of the second flow monitor is less than the preset flow rate, the first real-time flow rate of each first flow monitor is obtained, and the corresponding fourth solenoid valves are opened in sequence from high to low until the second real-time flow rate is not less than the preset flow rate;

[0021] When it is determined that all fourth solenoid valves are open and the second real-time flow rate is less than the preset flow rate, the second solenoid valve continues to be opened and its opening is adjusted until the second real-time flow rate is not less than the preset flow rate.

[0022] Further, including:

[0023] During the power generation process, when it is determined that power generation is only based on external rainwater, when the first real-time flow rate is greater than the preset flow rate, the sixth solenoid valve between the water inlet pipe and the municipal rainwater pipe is opened and its opening is adjusted until the first real-time flow rate is no greater than the preset flow rate.

[0024] Further, including:

[0025] When it is determined that the actual water level in any water storage and regulating tank is higher than the preset water level, the seventh solenoid valve between the corresponding constant flow pipe and the municipal rainwater pipe is opened and its opening is adjusted until the actual water level is no higher than the preset water level.

[0026] Further, including:

[0027] When the meteorological sensor determines that there is no rainfall, the photovoltaic panel angle is adjusted according to the solar azimuth to generate electricity;

[0028] The photovoltaic power is stored in the energy storage unit.

[0029] Beneficial effects:

[0030] It can be seen from the above technical solutions that the technical solution of the present invention provides a zero-carbon park resource recycling system that integrates source, grid, load and storage to meet the effective recycling of water resources and promote the construction of a zero-carbon park.

[0031] This technical solution considers the use of both rainwater and domestic wastewater as power sources for hydroelectric power generation. First, the front-end water treatment process not only extends the lifespan of the power generation equipment, but also reduces the difficulty and cost of subsequent water treatment. The separated oil and fat can be comprehensively utilized. Specifically, the pre-installed grit and grease trap not only separates most of the biomass residue and oil from the domestic wastewater, extending the lifespan of the hydroelectric power generation equipment, but also, through subsequent processing, can be converted into biofuel, reducing carbon emissions and facilitating resource recycling. The water from the power generation process is disinfected and can be reused for landscaping irrigation or directly fed into the municipal pipeline network, reducing subsequent water treatment costs. Second, by comprehensively considering meteorological conditions—namely, rainfall volume, cumulative rainfall, and inflow flow—rainwater-based power generation and domestic wastewater-based power generation effectively complement each other. A monitor and controller are linked to dynamically optimize water quality treatment and power generation efficiency. Throughout the power generation process, domestic wastewater is used primarily, with rainwater as a supplementary source. This effectively offsets carbon emissions and carbon consumption within the park, while ensuring sufficient power generation to provide clean hydroelectric power.

[0032] It should be appreciated that all combinations of the foregoing concepts, as well as additional concepts described in greater detail below, to the extent such concepts are not mutually inconsistent, can be considered to be part of the inventive subject matter of this disclosure.

[0033] The foregoing and other aspects, embodiments, and features of the present invention will be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as features and / or beneficial effects of the exemplary embodiments, will become apparent from the following description or through practice of specific embodiments according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For the sake of clarity, not every component is labeled in every figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings, in which:

[0035] Figure 1 This is a structural diagram of the zero-carbon park resource recycling system with integrated source, grid, load and storage described in this embodiment;

[0036] Figure 2This is a partial structural diagram of the wastewater power generation unit in this embodiment;

[0037] Figure 3 This is a schematic structural diagram of the inner baffle of the sand and grease trap in this embodiment;

[0038] Figure 4 Schematic diagram of the structure of the baffle in the sand and oil trap in this embodiment.

[0039] The figures in the figure are marked as follows: 1 is a meteorological sensor, 2 is a rainwater storage tank, 3 is a first row of miscellaneous pipes, 4 is a filter, 5 is a rainwater monitor, 6 is a water inlet pipe, 7 is a sand and oil separator, 8 is a water treatment tank, 9 is a water storage and regulating tank, 10 is a constant flow pipe, 11 is a regulating pipe, 12 is a second row of miscellaneous pipes, 13 is a wastewater pipe, 14 is an oil suction pipe, 15 is an oil collecting tank, 16 is an impurity tank, 17 is a generator set, 18 is an energy storage unit, 19 is a municipal drainage pipe, 20 is an impurity monitor, 21 is a photovoltaic panel, 22 is a biomass treatment tank, 23 is a motor, 24 is a rope, and 25 is a pulley; 6.1 is a hydraulic buffer pipe, 7.1 is an oil separator, and 8.1 is a processing module. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described 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. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with ordinary skills in the field to which the present invention belongs.

[0041] The words “first”, “second” and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular forms of “a”, “an” or “the” and similar words do not indicate a quantitative limitation, but rather indicate the presence of at least one. Words such as “include” or “comprise” mean that the elements or objects appearing before “include” or “comprises” cover the features, wholes, steps, operations, elements and / or components listed after “include” or “comprises”, and do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections. “Up”, “down”, “left”, “right” and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] While existing technologies utilize rainwater for power generation to achieve a clean electricity supply, these solutions are not effectively applicable to modern industrial parks, where carbon emissions and carbon consumption can be offset, thereby achieving the goal of achieving zero-carbon development for the entire park. Therefore, this embodiment aims to provide a zero-carbon industrial park resource recycling system that integrates power generation, grid loading, and storage to address these technical issues.

[0043] The following is a detailed introduction to the zero-carbon park resource recycling system with integrated source, grid, load and storage described in this embodiment with reference to the accompanying drawings.

[0044] Combine Figures 1 to 4 As shown, the system includes a coordinated meteorological sensor 1, a rainwater power generation unit, a wastewater power generation unit, a generator set 17, an energy storage unit 18, an impurity pool 16, and an oil collection pool 15. The meteorological sensor 1 and the rainwater power generation unit are located on the top floor of the building, the wastewater power generation unit is located in each independent space on each floor, and the generator set 17, the energy storage unit 18, the impurity pool 16, and the oil collection pool 15 are all located on the bottom floor.

[0045] The rainwater power generation unit is provided with a rainwater reservoir 2, a first row of miscellaneous pipes 3, a filter 4 and a rainwater monitor 5. The rainwater reservoir 2 serves to store and balance the flow of rainwater. It is provided with an inclined bottom surface. One end of the first row of miscellaneous pipes 3 is connected to the lower side of the bottom surface of the rainwater reservoir 2, and the other end is connected to the impurity pool 16. At this time, the inclined design facilitates the smooth discharge of impurities in the rainwater reservoir 2, thereby improving the cleanliness of the rainwater collected therein. A filter 4 is embedded in the rainwater inlet of the water inlet pipe 6, and the rainwater inlet is connected to the external environment and the higher side of the bottom of the rainwater reservoir 2 at the same time. The filter 4 is used to filter and remove larger particles of impurities. A first solenoid valve is provided between the rainwater inlet and the external environment, and a second solenoid valve is provided between the rainwater inlet and the rainwater reservoir 2. At this time, when the rainfall is large, specifically, when the immediate rainfall is greater than the second immediate rainfall threshold and the accumulated rainfall is greater than the second accumulated threshold, the first solenoid valve and the second solenoid valve can be opened at the same time. On the one hand, the rainwater filtered by the filter 4 can directly enter the generator set 17 through the water inlet pipe 6 to generate electricity; on the other hand, the surface runoff water can also be filtered and collected into the rainwater storage tank 2 to quickly realize rainwater storage.

[0046] Preferably, a seventh solenoid valve is provided at the first impurity discharge pipe 3 to time the opening of the communication path between the first impurity discharge pipe 3 and the impurity pool 16. This allows the impurities in the rainwater in the rainwater reservoir 2 to settle and then be discharged in a centralized manner, thus avoiding the waste of available rainwater during the discharge process.

[0047] The wastewater power generation section includes a grit and grease trap 7, a water treatment tank 8, a water storage and regulation tank 9, a constant flow pipe 10, and a regulating pipe 11, all interconnected in sequence. Specifically, the wastewater pipe 13 connects to the domestic wastewater source at one end and to the grit and grease trap 7 at the other. The constant flow pipe 10 and regulating pipe 11 connect to the upper and lower portions of the water storage and regulation tank 9 at one end, respectively, and to the water inlet pipe 6 at the other end. The pipe between the constant flow pipe inlet and the regulating pipe inlet in the water inlet pipe is a hydraulic buffer pipe 6.1. The diameter of this hydraulic buffer pipe 6.1 is larger than that of the rest of the water inlet pipe 6 to ensure thorough mixing of the water flows from the different pipes and prevent sudden interruptions in flow that could affect the hydroelectric power generation process. The grit and grease trap 7 and water treatment tank 8 both have conical bottoms, while the water storage and regulation tank 9 has an inclined bottom. The second row of impurity pipes connects to the conical apex of the grit and grease trap 7 and water treatment tank 8, as well as the lower side of the bottom of the water storage and regulation tank 9, at one end, and to the impurity tank at the other end. At this time, the slope design can be used to facilitate the rapid discharge of impurities collected in them. Specifically, a fifth solenoid valve is provided at one end of the second impurity pipe 12 that is connected to the sand and oil separator 7, the water treatment tank 8 and the water storage and regulating tank 9. An impurity monitor 20 is provided at the bottom of the sand and oil separator 7, the water treatment tank 8 and the water storage and regulating tank 9; each impurity monitor 20 is communicated with each fifth solenoid valve in a one-to-one correspondence. At this time, the impurities in them can be monitored based on the impurity monitor 20, and the corresponding fifth solenoid valve can be opened accordingly to discharge the impurities, avoiding the waste water that is directly discharged into the impurity tank 16 when it is normally open or opened at the same time, resulting in waste water. The retractable end of the oil suction pipe 14 extends into the sand and oil separator 7, and the other end is connected to the oil collecting tank 15. A liquid level sensor is provided in the sand and oil separator 7 that is communicated with the retractable end. At this point, the length of the oil suction pipe 14 extending into the grit and grease trap 7 can be adjusted based on the liquid level sensing within the grit and grease trap 7 to ensure smooth oil removal, preventing it from adsorbing onto the walls of the trap 7 or even flowing into the water treatment tank 8. As a preferred embodiment, considering the low-temperature solidification properties of animal fats and oils, heating plates are embedded in the sidewalls of the grit and grease trap 7 to prevent solidification and adhesion to the sidewalls. The oil and other impurities in the oil collection tank 15 and impurity tank 16 are used to produce biofuel. Therefore, a biomass treatment tank 22 is also provided, connected to these tanks, to perform pre-processing for biofuel processing. A first flow monitor is also provided at the hydraulic buffer pipe 6.1, a third solenoid valve is provided at the constant flow pipe 10, and a fourth solenoid valve is provided at the regulating pipe 11. The openings of the third and fourth solenoid valves can be adjusted based on the actual monitored flow rates to meet actual power generation needs.

[0048] As a specific embodiment, for the water treatment pool 8, a processing module 8.1 is sunk therein. The processing module 8.1 includes activated carbon layers and acid-base neutralization layers that are alternately arranged longitudinally to further adsorb impurities, neutralize pH, and purify wastewater. At the same time, considering the easy wear and tear of the processing module 8.1, in order to improve the quality of wastewater purification, the processing module 8.1 is also made detachable for easy replacement. Furthermore, corresponding motors 23, ropes 25 and pulleys 24 are provided. The pulley 24 is installed at the top of the corresponding independent space, and the rope 25 is wound around the pulley 24, with one end connected to the motor 23 and the other end connected to the processing module 8.1. A monitoring device is also set up in the water treatment pool 8, and the monitoring device is communicated with the background control end. When it is detected that the remaining amount of effective substances in the activated carbon layer and the acid-base neutralization layer is lower than the residual threshold, a feedback signal is sent to the background control end. At this time, the background control end will remind the personnel that the processing module 8.1 needs to be replaced, and after obtaining the personnel's confirmation replacement signal, it will send a lifting instruction to the motor 23 to drive the rope 25 to lift the processing module 8.1 in the treatment pool 8.

[0049] Oil baffles 7.1 are arranged at longitudinal intervals in the grit and grease trap. In order to prevent the oil baffles 7.1 from blocking the water flow, through holes are opened at the junction of each oil baffle 7.1 and the bottom of the grit and grease trap 7, so that the wastewater after degreasing and sedimentation can smoothly enter the water treatment tank 8.

[0050] To conserve system floor space and facilitate placement in independent spaces such as offices and laboratories, the grit and grease trap 7, water treatment tank 8, and water storage and regulation tank 9 are sequentially connected and arranged adjacent to each other. The grit and grease trap 7 and water treatment tank 8 are connected at the bottom to prevent grease floating on the upper layer from entering the water treatment tank 8. The water treatment tank 8 and water storage and regulation tank 9 are connected at the top to ensure the cleanliness of the wastewater entering the water storage and regulation tank 9.

[0051] Generator set 17 is connected to energy storage unit 18 and includes a water inlet end connected to the unused end of water inlet pipe 6 and a drainage end connected to municipal drain pipe 19. A second flow monitor is provided at the water inlet end. Simultaneously, the first flow monitor, second flow monitor, meteorological sensor, and rainfall monitor are all connected to the first, second, third, and fourth solenoid valves. If the second flow monitor detects insufficient flow, the corresponding solenoid valve can be opened and its opening adjusted to regulate the flow entering generator set 17. At this point, wastewater and rainwater from power generation, having undergone appropriate treatment, can be discharged directly into municipal drain pipe 19, avoiding pollution and also allowing for irrigation of landscaping.

[0052] At the same time, in order to ensure the supply of clean electricity in large-scale electricity consumption scenarios, a photovoltaic panel 21 is also provided. The photovoltaic panel 21 is arranged on the top floor of the building and is electrically connected to the energy storage unit 18.

[0053] During specific implementation, the energy storage unit 18 supplies power to each electrical device in the system. During the rainwater treatment process, rainwater from the roof enters the filter 4 through the rainwater inlet, and after removing larger particulate impurities, it flows into the rainwater storage tank 2. The rainwater storage tank 2 evenly transports rainwater to the water inlet pipe 6 according to the rainwater flow and subsequent treatment requirements. During the domestic wastewater treatment process, domestic wastewater is discharged into the sand and oil separation tank 7 through the wastewater pipe 13. Biomass residues and the like are precipitated at the bottom of the tank, and oily dirt floats on the water surface and is collected into the oil collection tank 15 through the oil suction pipe 14. The wastewater then enters the water treatment tank 8, where it is further purified under the action of activated carbon adsorption and acid-base neutralizer. Impurities at the bottom of the tank are discharged into the impurity tank 16 through the second impurity discharge pipe 12 for centralized treatment. The treated water enters the water storage and regulating tank 9, which is divided into a constant flow pipe 10 and a regulating pipe 11. The constant flow pipe 10 is a channel for domestic wastewater to replenish the water volume in the generator set 17 on a long-term basis. When the second flow monitor detects that the flow rate is insufficient, the regulating pipe 11 is called to replenish water to the water inlet pipe. Specifically, the number of regulating pipes to be opened is determined based on the flow rate to achieve the purpose of increasing the flow rate. During the rainwater-domestic wastewater linkage regulation process, when the meteorological sensor 1 detects that it is a sunny day, domestic wastewater is mainly used for power generation. The second flow monitor and each first flow monitor monitor the flow in real time. If the current flow is less than the minimum power generation flow threshold, the water in the rainwater reservoir 2 is first activated to replenish the flow. If the water in the rainwater reservoir 2 is used up, the regulating pipe 11 of the domestic wastewater reservoir is activated for further flow replenishment to meet the flow demand of the generator set 17. When the meteorological sensor 1 detects rain, the rainfall amount is monitored in real time through the rain monitor 5 to determine whether the current rainfall meets the hydropower generation flow rate. Based on the rainfall intensity and water demand, the system adopts a three-level linkage control strategy: Level I (light rain / initial rainfall), that is, when the rainfall is less than 10mm / h (the first rain threshold) and the accumulated rainfall is less than 30mm (the first accumulated threshold), the third solenoid valve corresponding to the constant flow pipe 10 is fully opened, and the domestic wastewater enters the generator set 17 first after pretreatment; at the same time, the rainwater discharge device is started, the first solenoid valve and the second solenoid valve are closed at the same time, and the initial rainwater (containing higher pollutants) is directly discharged. When the rainfall is 10mm / h ≤ ≤ 25mm / h (the second rainfall threshold) and the accumulated rainfall is 30-100mm (the second accumulated threshold), the second solenoid valve at the rainwater reservoir 2 is adjusted as needed (initial opening 50%); the mixed wastewater (rainwater + domestic wastewater) flows through the water inlet pipe 6 at the same time, maintaining a flow rate of ≥ 0.8m / s. When the rainfall is ≥ 25mm / h or the hourly rainfall intensity suddenly increases by 50% at Level III (heavy rain / extreme rainfall), the third solenoid valves corresponding to the regular flow pipes of domestic wastewater are closed, and all wastewater is temporarily transferred to the water storage and regulation tank 9; the rainwater reservoir 2 is filled with water at full speed, and rainwater is used for power generation first; if the rainwater flow exceeds the limit, the emergency overflow pipe is activated to discharge it into the municipal pipeline network. During the power generation and supply process, the treated domestic wastewater or rainwater enters the generator set 17.The first flow monitor and the second flow monitor monitor the water flow in real time to ensure that the stable flow drives the generator set 17 to operate efficiently, and the generated electricity is stored in the energy storage unit 18. The energy storage unit 18 stores energy during low-load periods to ensure that the system continues to operate at night or when there is insufficient rainfall. During the day, the photovoltaic panels 21 are used to generate electricity to supply power to the electrical equipment inside the building (power supply priority: lighting > air conditioning > other electrical equipment). At the same time, the excess photovoltaic power generated during the day and the power generated by domestic wastewater are stored in the energy storage unit 18. At night or on rainy days, the generator set 17 is used to supply power to the interior of the building. At the same time, if the power load is greater than the power generation, the power in the energy storage unit 18 is activated to supplement the power supply. During the maintenance and management process, the impurities in the sand and oil separator 7 and the water treatment tank 8 are cleaned regularly, and the consumption of activated carbon and acid-base neutralizers is checked and replaced in time to ensure the normal operation of the equipment and the treatment effect.

[0054] In summary, this system integrates the pretreatment and drainage power generation of building domestic wastewater and rainwater, effectively improving the efficiency of water resource utilization. At the same time, it can solve the problem of the inability to form a stable water flow for power generation due to the temporal and spatial imbalance of rainwater and domestic wastewater. It achieves the reduction of building carbon emissions by directly reducing carbon emissions and optimizing carbon consumption in two ways, and has good environmental and economic value.

[0055] Based on the above-mentioned system, this embodiment also provides a zero-carbon park resource recycling method that integrates source, grid, load and storage.

[0056] Specifically, the method includes the following steps:

[0057] Step S202: When it is determined based on the meteorological sensor that there is no rainfall, the first solenoid valve, the second solenoid valve and the fourth solenoid valve are controlled to be closed at the same time, and the third solenoid valve is opened to allow the water in each water storage and regulating tank to flow into the water inlet pipe and the generator set in sequence to generate electricity, and then be discharged through the municipal drainage pipe.

[0058] To ensure sufficient supply of clean electricity, the following steps are also included:

[0059] Step S20202: When it is determined based on the meteorological sensor that there is no rainfall, the photovoltaic panel angle is adjusted according to the solar azimuth to generate electricity;

[0060] Step S20204: store the photovoltaic power in the energy storage unit.

[0061] Step S204: When the meteorological sensor determines that rainfall has occurred, the rainfall monitor determines that the rainfall is less than the first rainfall threshold and the accumulated rainfall is less than the first accumulated threshold, and electricity is generated based on the water flowing through the constant flow pipes, and the top cover of the rainwater storage tank is closed to prevent rainwater from entering. When the rainfall is determined to be between the first and second rainfall thresholds and the accumulated rainfall is between the first and second accumulated thresholds, the first solenoid valve and the third solenoid valve are controlled to be opened at the same time, and the second and fourth solenoid valves are controlled to be closed at the same time, so as to generate electricity based on the water flowing through the constant flow pipes and external rainfall. When the rainfall is determined to be greater than the second rainfall threshold and the accumulated rainfall is greater than the second accumulated threshold, the first solenoid valve is controlled to be opened, and the second, third and fourth solenoid valves are controlled to be closed at the same time, so as to generate electricity based on external rainfall.

[0062] Step S208: During the power generation process, when it is determined that power generation is performed based on the water flowing through each constant flow pipe, when it is determined that the second real-time flow of the second flow monitor is less than the preset flow, the first real-time flow of each first flow monitor is obtained, and the corresponding fourth solenoid valves are opened in sequence from high to low until the second real-time flow is not less than the preset flow.

[0063] As a further embodiment, step S208 further includes the following process to avoid excessive flow in rainy weather and causing adverse effects on the generator set:

[0064] Step S20802: During the power generation process, when it is determined that power generation is performed only based on external rainwater, if the first real-time flow rate is greater than the preset flow rate, the sixth solenoid valve between the water inlet pipe and the municipal rainwater pipe is opened and its opening is adjusted until the first real-time flow rate is no greater than the preset flow rate.

[0065] Step S210: When it is determined that all fourth solenoid valves are open and the second real-time flow rate is less than the preset flow rate, continue to open the second solenoid valve and adjust its opening until the second real-time flow rate is not less than the preset flow rate.

[0066] As a preferred embodiment, the following method is also included to avoid overflow of the water storage regulating tank:

[0067] Step S302: When it is determined that the actual water level in any water storage regulating tank is higher than the preset water level, the seventh solenoid valve between the corresponding constant flow pipe and the municipal rainwater pipe is opened and its opening is adjusted until the actual water level is no higher than the preset water level.

[0068] Since the method is based on the system, it can effectively promote the successful construction of a zero-carbon park when applied in practice.

[0069] While the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Persons skilled in the art will readily appreciate that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A zero-carbon park resource recycling system integrating source, grid, load and storage, characterized by: include: A rainwater power generation unit, wherein the rainwater storage tank has an inclined bottom surface, one end of a first miscellaneous pipe is connected to the lower side of the bottom surface of the rainwater storage tank, and the other end is connected to the impurity tank; a filter is embedded in the rainwater inlet of the water inlet pipe, and the rainwater inlet is connected to the external environment and the higher side of the bottom of the rainwater storage tank at the same time; a first solenoid valve is provided between the rainwater inlet and the external environment, and a second solenoid valve is provided between the rainwater inlet and the rainwater storage tank; The wastewater power generation unit is placed in an independent space on each floor, wherein the grit and grease trap, water treatment tank and water storage and regulating tank are connected in sequence; one end of the wastewater pipe is connected to the domestic wastewater source, and the other end is connected to the grit and grease trap; one end of the constant flow pipe and the regulating pipe are connected to the upper and lower parts of the water storage and regulating tank respectively, and the other ends are connected to the water inlet pipe; the pipe between the constant flow pipe inlet and the regulating pipe inlet in the water inlet pipe is set as a hydraulic buffer pipe; the grit and grease trap and the water treatment tank both have a conical bottom, and the water storage and regulating tank has an inclined bottom One end of the second miscellaneous pipe is connected to the conical top of the grit and oil trap and the water treatment tank, and the lower side of the bottom surface of the water storage and regulating tank, and the other end is connected to the impurity tank; the retractable end of the oil suction pipe extends into the grit and oil trap, and the other end is connected to the oil collection tank; a liquid level sensor is provided in the grit and oil trap that is in communication with the retractable end; a first flow monitor is provided at the hydraulic buffer pipe, a third solenoid valve is provided at the constant flow pipe, and a fourth solenoid valve is provided at the regulating pipe; the oil collection tank and the impurity tank are both connected to the biomass treatment tank to obtain biofuel; The generator set is connected to the energy storage unit, including a water inlet end connected to the free end of the water inlet pipe and a drainage end connected to the municipal drainage pipe; the water inlet end is provided with a second flow monitor; The first flow monitor, the second flow monitor, the meteorological sensor, and the rainfall monitor are all communicatively connected with the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve at the same time.

2. The zero-carbon park resource recycling system with integrated source, grid, load and storage according to claim 1 is characterized in that: A detachable processing module is disposed in the water treatment pool; the processing module comprises an activated carbon layer and an acid-base neutralization layer which are alternately arranged in a longitudinal direction.

3. The zero-carbon park resource recycling system with integrated source, grid, load and storage according to claim 1 is characterized in that: Oil baffles are arranged at intervals in the longitudinal direction in the sand and oil trap, and a through hole is provided at the junction of each oil baffle and the bottom of the sand and oil trap.

4. The zero-carbon park resource recycling system with integrated source, grid, load and storage according to claim 1 is characterized in that: The photovoltaic panel is provided on the top floor of the building and is electrically connected to the energy storage unit.

5. The zero-carbon park resource recycling system with integrated source, grid, load and storage according to claim 1 is characterized in that: The grit and oil trap, water treatment tank and water storage and regulation tank are arranged adjacent to each other in sequence. The grit and oil trap is connected to the water treatment tank through the bottom, and the water treatment tank is connected to the water storage and regulation tank through the top.

6. The zero-carbon park resource recycling system with integrated source, grid, load and storage according to claim 1 is characterized in that: A fifth solenoid valve is provided at one end of the second row of miscellaneous pipes connected to the sand and oil trap, water treatment tank and water storage and regulating tank; impurity monitors are provided at the bottom of the sand and oil trap, water treatment tank and water storage and regulating tank; each impurity monitor is communicatively connected to each fifth solenoid valve in a one-to-one manner.

7. A zero-carbon park resource recycling method with integrated source, grid, load and storage, characterized in that: include: When the meteorological sensor determines that there is no rainfall, the first solenoid valve, the second solenoid valve and the fourth solenoid valve are controlled to be closed at the same time, and the third solenoid valve is opened to allow the water in each water storage and regulating tank to flow into the water inlet pipe and the generator set in sequence to generate electricity, and then be discharged through the municipal drainage pipe; When rainfall is determined based on the meteorological sensor, if the rainfall is still determined based on the rain monitor to be less than the first rainfall threshold and the accumulated rainfall is less than the first accumulated threshold, electricity is generated based on the water flowing through each constant flow pipe, and the top cover of the rainwater storage tank is closed to prevent rainwater from entering; when the rainfall is determined to be between the first and second rainfall thresholds and the accumulated rainfall is between the first and second accumulated thresholds, the first solenoid valve and the third solenoid valve are controlled to be opened at the same time, and the second and fourth solenoid valves are controlled to be closed at the same time, so as to generate electricity based on the water flowing through each constant flow pipe and external rainfall; when the rainfall is determined to be greater than the second rainfall threshold and the accumulated rainfall is greater than the second accumulated threshold, the first solenoid valve is controlled to be opened, and the second, third and fourth solenoid valves are controlled to be closed at the same time, so as to generate electricity based on external rainfall; During the power generation process, when it is determined that power generation is being performed based on the water flowing through each constant flow pipe, if it is determined that the second real-time flow rate of the second flow monitor is less than the preset flow rate, the first real-time flow rate of each first flow monitor is obtained, and the corresponding fourth solenoid valves are opened in sequence from high to low until the second real-time flow rate is not less than the preset flow rate; When it is determined that all fourth solenoid valves are open and the second real-time flow rate is less than the preset flow rate, the second solenoid valve continues to be opened and its opening is adjusted until the second real-time flow rate is not less than the preset flow rate.

8. The zero-carbon park resource recycling method with integrated source, grid, load and storage according to claim 7 is characterized in that: include: During the power generation process, when it is determined that power generation is only based on external rainwater, when the first real-time flow rate is greater than the preset flow rate, the sixth solenoid valve between the water inlet pipe and the municipal rainwater pipe is opened and its opening is adjusted until the first real-time flow rate is no greater than the preset flow rate.

9. The zero-carbon park resource recycling method with integrated source, grid, load and storage according to claim 7 is characterized in that: include: When it is determined that the actual water level in any water storage and regulating tank is higher than the preset water level, the seventh solenoid valve between the corresponding constant flow pipe and the municipal rainwater pipe is opened and its opening is adjusted until the actual water level is no higher than the preset water level.

10. The zero-carbon park resource recycling method with integrated source, grid, load and storage according to claim 7 is characterized in that: include: When the meteorological sensor determines that there is no rainfall, the photovoltaic panel angle is adjusted according to the solar azimuth to generate electricity; The photovoltaic power is stored in the energy storage unit.

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