Micro-grid type rainwater garden based on slag-based pervious concrete

Abstract

The invention discloses a micro-grid type rainwater garden based on slag-based pervious concrete. The micro-grid type rainwater garden comprises a footpath and square surface layer rainwater collection system, a surface layer bottom overflow storage system, a rainwater collection system, a rainwater utilization system and a micro-grid system based on photovoltaic power generation. Wherein the permeable filtering surface layer and the filling layer are made of tailing solid waste, the bottom of the surface layer is provided with a self-adaptive water storage and overflow pipeline network and a strong and weak electricity reserved pipeline, and rainwater is stored in the buried water pool through the collecting system and then supplied to rainwater utilization systems (greening irrigation, fountains and the like) through a water pump; the micro-grid system generates power through a photovoltaic panel, directly supplies power in the daytime, stores residual power and supplies power through stored energy at night. The method realizes recycling of tailing solid waste, efficiently utilizes rainwater and solar energy, is energy-saving and environment-friendly, and conforms to the green ecological building concept.

Description

Technical Field

[0001] This invention relates to the field of energy-saving and environmental protection technology, specifically to a microgrid-type rain garden based on slag-based permeable concrete. Background Technology

[0002] In mining and smelting, after ore beneficiation, the vast majority of the ore is discharged as tailings powder. Improper management of discharge and storage can lead to resource waste and environmental damage. Currently, tailings can be screened and refined to produce a series of tailings concrete products, such as permeable concrete bricks and waste residue concrete. However, the downstream demand for these products is currently small. Improving this situation requires the support of new building forms that use these products as the main material.

[0003] Currently, urban greening consumes a large amount of freshwater resources, and limitations in power grid construction prevent the effective utilization of large-scale green electricity. The next generation of green buildings urgently needs innovative approaches to resource-integrated ecological green buildings. Water conservation protects precious freshwater resources and their ecosystems, reducing pollution and energy consumption; new energy sources fundamentally reduce greenhouse gas emissions and air pollution, significantly lowering the water and land consumption and damage caused by energy production. Together, they are indispensable pathways to improving environmental quality, addressing climate change, protecting biodiversity, and achieving sustainable development. Every drop of water saved, every kilowatt-hour of clean electricity used, reduces the burden on the planet and paves the way for the future. This invention is a new generation of building models based on tailings concrete products combined with a microgrid, integrating source-grid-load-storage and rainwater harvesting and utilization. Summary of the Invention

[0004] The purpose of this invention is to provide a microgrid-type rain garden based on slag-based permeable concrete to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a microgrid-type rain garden based on slag-based permeable concrete, comprising a rainwater collection system for the walkway and plaza surface layer, a bottom overflow storage system for the surface layer, a rainwater collection system, a rainwater utilization system, and a microgrid system based on photovoltaic power generation; the rainwater collection system for the walkway and plaza surface layer comprises, from top to bottom, a permeable filter surface layer, a permeable paving bonding layer, and a permeable filter filling layer; the bottom overflow storage system is located inside the permeable filter filling layer, and includes an adaptive overflow storage pipeline network system and reserved pipelines for strong and weak current; the rainwater collection system is located in a low-lying area of ​​the garden, and includes an underground reinforced concrete water tank, a water pump, a water supply pipeline, and an exhaust pipe; the overflow storage pipeline network system is connected to the underground reinforced concrete water tank; the underground reinforced concrete water tank uses a water pump to input the water stored inside into the rainwater utilization system; the exhaust pipe is inserted into the cover plate of the underground reinforced concrete water tank; the rainwater utilization system consists of water-using equipment within the garden;

[0006] The microgrid system includes photovoltaic panels, inverters, energy storage battery equipment, electrical equipment, cables, grounding protection, microgrid power cables and control cables, which are used to supply power to the entire system. The microgrid power cables and control cables are run through reserved conduits for both high and low voltage power.

[0007] Preferably, the permeable filter surface layer is formed by paving with permeable concrete bricks made from recycled tailings solid waste, and the permeable filter filling layer is formed by filling with large-pore lightweight concrete made from recycled tailings solid waste.

[0008] Preferably, the pipes in the adaptive water storage and overflow pipeline network system are modified from PVC-U pipes, with multiple sets of continuous round holes on both sides of the upper part of the pipes, and the pipes are set with a certain slope so that rainwater can flow into the pipes.

[0009] Preferably, the cover plate of the underground reinforced concrete water tank has a function of supplementing filtration and water storage, and the vent can balance the pressure between the water tank and the outside.

[0010] Preferably, the water-using equipment of the rainwater utilization system includes an automatic sprinkler system for lawns and flower beds, a fountain system for small water features, and sanitary water-using equipment.

[0011] Preferably, the photovoltaic-based microgrid system directly uses photovoltaic power during the day when there is sunlight, stores excess energy in energy storage batteries, and uses the energy storage batteries as the power source at night.

[0012] Preferably, the exhaust pipe also serves as a pre-buried power pipe.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. Promote the resource utilization of tailings solid waste: The permeable filter surface layer is paved with high-permeability filter concrete permeable bricks made from recycled tailings solid waste, and the permeable filter filling layer is filled with large-pore lightweight concrete made from recycled tailings solid waste. It consumes a large amount of tailings products, solves the problems of resource waste and environmental damage in tailings discharge and storage, and provides a new application scenario for tailings concrete products, promoting the recycling of tailings resources.

[0015] 2. Efficient Rainwater Collection and Utilization, Conserving Water Resources: Rainwater is efficiently collected and stored through a surface rainwater harvesting system for walkways and plazas, a bottom-level overflow storage system, and a comprehensive rainwater collection system. The collected rainwater is then used for irrigation of lawns and flower beds, small water features and fountains, and sanitation, reducing the city's reliance on freshwater resources, conserving precious freshwater resources, and protecting the aquatic ecosystem.

[0016] 3. Achieving energy self-sufficiency and environmental protection through photovoltaic power generation: Microgrid systems based on photovoltaic power generation directly use photovoltaic electricity during the day, storing excess energy in energy storage batteries for power supply at night, eliminating the need for grid power. This not only reduces dependence on the traditional power grid and minimizes the environmental damage caused by energy production, but also reduces greenhouse gas emissions and air pollution through the use of clean energy, aligning with the environmental protection concept of utilizing new energy sources.

[0017] 4. The system is designed to be highly efficient and adaptable, enabling internal resource circulation: The adaptive water storage and overflow pipeline network system can adjust itself according to the water volume (storing water when not full and allowing it to naturally seep into the ground when full). The buried reinforced concrete water tank cover also has the function of supplementing filtration and water storage. The exhaust pipe can balance pressure and also serve as a pre-buried power pipe. All systems work together to achieve efficient internal circulation of rainwater resources and energy, which is in line with the resource circulation concept of the new generation of green and energy-saving ecological buildings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a water-permeable filter surface layer;

[0019] Figure 2 This is a schematic diagram of the surface layer bottom overflow system;

[0020] Figure 3 A schematic diagram of an adaptive water storage and overflow pipeline network system;

[0021] Figure 4 This is a schematic diagram of a rain-water mobile phone system;

[0022] Figure 5 This is a schematic diagram of a water circulation system;

[0023] Figure 6 This is a schematic diagram of the energy cycle.

[0024] In the diagram: 1. High-permeability filter concrete permeable bricks; 2. Permeable filter surface layer; 3. Circular holes; 4. Pipes; 5. Permeable paving bonding layer; 6. Permeable filter filling layer; 7. Adaptive water storage and overflow pipeline network system; 8. Reserved pipelines for strong and weak current; 9. Vent pipe; 10. Buried reinforced concrete water tank; 11. Water supply pipeline; 12. Water pump. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] The microgrid-type rain garden (hereinafter referred to as: rain garden system) based on slag-based permeable concrete proposed in this invention can make extensive use of tailings products, store and utilize rainwater, and does not consume mains electricity. It is water-saving, energy-saving, environmentally friendly and green, which is in line with the new generation of green and energy-saving ecological building concepts.

[0027] The system is divided into a rainwater harvesting system for the surface of the walkway and plaza, a rainwater storage system at the bottom of the surface, a rainwater harvesting system, a rainwater utilization system, and a photovoltaic power generation microgrid system.

[0028] The rainwater harvesting system for the walkways and plazas uses high-permeability filter concrete permeable bricks 1, manufactured from recycled tailings solid waste, to form the first permeable filter surface layer 2 for rainwater harvesting. This surface layer utilizes the advantages of the slag screened from tailings solid waste, such as high porosity, good permeability, and excellent filtration, allowing rainwater to immediately infiltrate below the surface layer after precipitation, ensuring no water accumulation on the surface.

[0029] The bottom overflow system of the walkway is a structural layer below the non-load-bearing pedestrian paving surface of garden paths and plazas, and above the soil layer. A permeable filter filling layer 6 is formed by using high-pore lightweight concrete manufactured from recycled tailings solid waste as filler. An adaptive overflow water storage pipeline network system 7, a garden microgrid power cable and control cable system (i.e., reserved power and data cable conduits 8) are laid inside. Rainwater permeates through the surface layer and collects in this layer. Part of it enters the adaptive overflow water storage pipeline network system 7, while the slope drainage enters the rainwater collection system. Excess rainwater infiltrates into the surface soil. The adaptive overflow water storage pipe 4 is modified from PVC-U pipes, with multiple sets of circular holes 3 on both sides of the upper part of the pipe 4. When the water storage system is not full, the slope drainage can be used to collect rainwater and discharge it into the storage tank. After the rainwater tank is full, excess rainwater is directly discharged underground.

[0030] The rainwater harvesting system is installed in a low-lying area of ​​the garden, and multiple units of varying sizes can be configured. This module consists of an underground reinforced concrete tank 10, a water pump 12, a water supply pipe 11, and an exhaust pipe 9. The walls of the underground reinforced concrete tank 10 are made of waterproof reinforced concrete, and the cover is made of large-pore reinforced concrete manufactured from recycled tailings solid waste. The cover allows for supplementary filtration and water storage. The water pump system, combined with the water supply pipe 11, provides power and water for rainwater harvesting, while the exhaust pipe 9 automatically balances the pressure between the tank and the external environment, ensuring smooth operation.

[0031] The rainwater utilization module consists of various water-using devices in the garden, including automatic sprinkler systems for lawns and flower beds, fountain systems for small water features, and other water-using systems.

[0032] The photovoltaic microgrid system consists of photovoltaic panels, inverters, energy storage batteries, electrical equipment, power cables, and grounding protection systems. Photovoltaic panels and supports are used to power the roofs of structures such as the garden's covered walkways and rest areas. During the day, the system uses solar power directly, with excess electricity stored in the batteries. At night, the batteries power the electrical equipment within the garden.

[0033] Specific implementation steps:

[0034] 1) Rainwater falls onto the garden permeable filter surface layer 2, and utilizes the large pores and densely packed physical properties of the high-permeability concrete permeable bricks 1 to filter and infiltrate into the lower layers, ensuring that the surface layer does not accumulate water.

[0035] 2) Rainwater infiltrates into the tailings using a permeable filter layer 6 made of large-pore lightweight concrete. It then collects water through permeable storage holes 3 in an adaptive overflow pipe 4 laid within this layer. Due to the gravity of the drainage slope, it flows through this pipe into the downstream storage tank 10. Other rainwater infiltrates into the soil layer.

[0036] 3) When there is continuous rainfall and abundant rainwater, after the reservoir is full, the rainwater cannot enter the permeable storage channel 3 due to the water pressure in the pipeline, and naturally seeps into the soil layer. This ensures the stability and reliability of the system.

[0037] 4) When the weather is dry, natural precipitation is insufficient, or other water needs to be supplied; the switch of the water-using equipment system is turned on manually or remotely controlled. The signal is transmitted to the water pump 12 through the signal line buried in the reserved strong and weak current pipe (8). The water pump 12 starts pumping and delivers water to the water-using equipment of this water-using unit through the water supply pipe 11. The water-using equipment includes irrigation water, sanitary water, and water replenishment water for water system fountains in the water storage tank water supply unit;

[0038] 5) Several water storage tanks are configured according to the terrain and buried underground in lower-lying areas to ensure that rainwater can enter the tanks through the gravity of the ramps. The tank covers are made of large-pore filter-type reinforced concrete using recycled tailings solid waste. These covers can permeate and filter rainwater seeping into the ground, enhancing rainwater collection efficiency. A ground vent pipe 9 is pre-installed on the top of the rainwater tank, which also serves as a pre-buried power pipe to regulate internal and external pressure and ensure smooth water inflow and outflow. A water pump 12 and a comprehensive control system are installed inside the water storage tanks, controlling the start and stop of the water pump 12 via signals from remote water-using equipment.

[0039] 6) A photovoltaic (PV) microgrid system consists of PV modules and mounting systems, an inverter and transformer system, an energy storage system, a transmission cable system, a grounding protection system, and consumer-side electrical equipment. PV modules are installed in garden landscape corridors, garden pavilions, streetlights, etc., converting solar energy into electrical energy. The direct current (DC) is transmitted to the inverter, modulated into alternating current (AC), and then stepped up by the transformer module to supply power to the consumer equipment. During periods of good sunlight, power is supplied to the consumer equipment, and the remaining power is stored in the energy storage system. At night or during periods of low sunlight, the energy storage system releases power to the consumer equipment. Excess electricity can be used to install charging stations or connected to the grid.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A microgrid-type rain garden based on slag-based permeable concrete, characterized in that: The system includes a rainwater collection system for the walkway and plaza surface, a bottom overflow storage system, a rainwater collection system, a rainwater utilization system, and a microgrid system based on photovoltaic power generation. The rainwater collection system for the walkway and plaza surface includes a permeable filter surface layer (2), a permeable paving bonding layer (5), and a permeable filter filling layer (6) arranged sequentially from top to bottom. The bottom overflow storage system is located inside the permeable filter filling layer (6), and includes an adaptive overflow storage pipeline network system (7) and reserved strong and weak current pipelines (8). The rainwater collection system is set in a low-lying area of ​​the garden and includes an underground reinforced concrete water tank (10), a water pump (12), a water supply pipeline (11), and an exhaust pipe (9). The overflow storage pipeline network system is connected to the underground reinforced concrete water tank (10). The underground reinforced concrete water tank (10) inputs the water stored inside into the rainwater utilization system through the water pump (12). The exhaust pipe (9) is inserted into the cover plate of the underground reinforced concrete water tank (10). The rainwater harvesting system consists of water-using equipment within the garden; The microgrid system includes photovoltaic panels, inverters, energy storage battery equipment, electrical equipment, cables, grounding protection, microgrid power cables and control cables, which are used to supply power to the entire system. The microgrid power cables and control cables are run through the reserved strong and weak current conduits (8).

2. The microgrid-type rain garden based on slag-based permeable concrete according to claim 1, characterized in that: The permeable filter surface layer (2) is formed by paving with permeable concrete bricks (1) made from recycled tailings solid waste, and the permeable filter filling layer (6) is formed by filling with large-pore lightweight concrete made from recycled tailings solid waste.

3. The microgrid-type rain garden based on slag-based permeable concrete according to claim 1, characterized in that: The pipe (4) in the adaptive water storage pipeline network system (7) is modified from a PVC-U pipe. Multiple sets of circular holes (3) are opened on both sides of the upper part of the pipe (4). The pipe (4) is set with a certain slope so that rainwater can flow into the pipe.

4. The microgrid-type rain garden based on slag-based permeable concrete according to claim 1, characterized in that: The cover plate of the underground reinforced concrete water tank (10) has the function of supplementing filtration and water storage, and the vent can balance the pressure between the water tank and the outside.

5. The microgrid-type rain garden based on slag-based permeable concrete according to claim 1, characterized in that: The water-using equipment of the rainwater utilization system includes an automatic sprinkler system for lawns, flower beds, and green spaces, a fountain system for small water features, and sanitary water-using equipment.

6. The microgrid-type rain garden based on slag-based permeable concrete according to claim 1, characterized in that: The photovoltaic-based microgrid system directly uses photovoltaic power during the day when there is sunlight, and stores excess energy in energy storage batteries. At night, the energy storage batteries are used as the power source.

7. The microgrid-type rain garden based on slag-based permeable concrete according to claim 1, characterized in that: The exhaust pipe (9) also serves as a pre-embedded power pipe.

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