Waste coal mine resource utilization system and method

Abstract

The invention belongs to the technical field of environmental protection and solid waste resource utilization, and relates to a waste coal mine resource utilization system and method. Comprising a coal gangue pretreatment system, a drainage water pretreatment system, a hydrogen production and storage system, a photovoltaic system and a soil remediation system, the coal gangue pretreatment system is respectively connected with the hydrogen production and storage system and the soil remediation system; the drainage water pretreatment system is respectively connected with the hydrogen production and storage system and the soil remediation system; the photovoltaic system is connected with the hydrogen production and storage system; clean energy is produced while waste resource utilization is achieved, ecological restoration of the waste coal mine is achieved, and the method has the advantages of being environmentally friendly, low in carbon, capable of comprehensively utilizing resources and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of environmental protection and solid waste resource utilization, and relates to a system and method for resource utilization of abandoned coal mines. Background Art

[0002] As global energy demand continues to grow, coal mining activities are becoming more frequent. This trend not only meets the energy needs of economic development, but also brings about the problem of a large number of abandoned mines after resource depletion. These abandoned mines are not only historical witnesses of energy mining, but also a treasure trove of rich potential resources, including coal gangue, coalbed methane, etc. However, the potential value of these resources has not been fully explored and utilized. Instead, due to improper management and poor treatment, they have become a heavy burden on the environment and society.

[0003] The large amount of waste in abandoned coal mines, especially coal gangue, not only occupies precious land resources, but also becomes a potential threat to the environment and ecosystem due to its unstable physical and chemical properties. Under the influence of the natural environment, coal gangue is prone to weathering and leaching, releasing pollutants such as heavy metals and harmful chemicals. These pollutants are transmitted through soil, water sources and even the atmosphere, posing a long-term threat to the ecosystem. Soil pollution may lead to reduced or even total crop yields, water pollution directly threatens the drinking water safety of humans and other organisms, and atmospheric pollution may cause health problems such as respiratory diseases.

[0004] At the same time, the problem of drainage water generated during coal mining cannot be ignored. Drainage water is groundwater extracted to lower the groundwater level and ensure mining safety. It has a huge amount of water and contains a variety of pollutants, including suspended matter, dissolved solids, heavy metal ions and organic pollutants. If it is discharged directly, it will not only waste precious freshwater resources, but also cause serious pollution to the surrounding water environment, thereby affecting the quality of groundwater and threatening drinking water safety and ecosystem health. Especially today when water resources are increasingly scarce, the rational use and purification of drainage water is particularly important.

[0005] In view of the above problems, how to effectively utilize the waste and drainage water in abandoned coal mines has become an important issue that needs to be solved urgently. On the one hand, it is necessary to explore ways to utilize waste such as coal gangue as resources, and transform them into valuable building materials, energy products, etc. through technological innovation and industrial upgrading to achieve resource recycling; on the other hand, it is necessary to strengthen the research on purification and treatment technology of drainage water, and remove pollutants through advanced physical, chemical or biological treatment methods to make it meet the reuse standards and be used in agricultural irrigation, industrial cooling, urban water supply and other fields, thereby reducing dependence on and pollution of natural water resources. Summary of the invention

[0006] The purpose of the present invention is to solve the problems in the prior art and provide a system and method for resource utilization of abandoned coal mines, which realizes the resource utilization of waste while producing clean energy, realizes the ecological restoration of abandoned coal mines, and has the characteristics of green, low carbon and comprehensive resource utilization.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: In the first aspect, the present invention provides an abandoned coal mine resource utilization system, including a gangue pretreatment system, a drainage water pretreatment system, a hydrogen production and storage system, a photovoltaic system and a soil remediation system; the gangue pretreatment system is connected to the hydrogen production and storage system and the soil remediation system, respectively; the drainage water pretreatment system is connected to the hydrogen production and storage system and the soil remediation system, respectively; the photovoltaic system is connected to the hydrogen production and storage system.

[0008] Preferably, the gangue pretreatment system comprises a gangue pretreatment device, a gangue modification device and an aerobic fermentation device which are connected in sequence; the aerobic fermentation device is respectively connected to a hydrogen production and storage system and a soil remediation system.

[0009] Preferably, the drain water pretreatment system includes a drain water pretreatment device, a drain water filtration device, a first water tank, an ultrafiltration device, a reverse osmosis device and a second water tank connected in sequence; the first water tank is connected to the soil remediation system; and the second water tank is connected to the hydrogen production and storage system.

[0010] Preferably, the hydrogen production and storage system includes hydrogen production equipment, hydrogen compression equipment, underground gas storage system and hydrogen purification equipment connected in sequence; the hydrogen production equipment is respectively connected to the photovoltaic system and the drainage water pretreatment system; the hydrogen compression equipment is connected to the coal gangue pretreatment system.

[0011] Preferably, the hydrogen production equipment includes a second water inlet, an electrolyzer, an oxygen outlet and a first hydrogen outlet; the second water inlet is arranged on the side wall of the electrolyzer; the oxygen outlet and the first hydrogen outlet are arranged at intervals on the top of the electrolyzer; the second water inlet is connected to the drain water pretreatment system; the first hydrogen outlet is connected to the hydrogen compression equipment; and the electrolyzer is connected to the photovoltaic system.

[0012] Preferably, a hydrogen inlet and a heat recovery device are provided on the side wall of the hydrogen compression equipment; a second hydrogen outlet is provided on the top of the hydrogen compression equipment; the hydrogen inlet is connected to the hydrogen production equipment; and the second hydrogen outlet is connected to the underground gas storage system.

[0013] Preferably, the underground gas storage system includes a gas storage reservoir; a third air inlet and a second air outlet connected thereto are respectively provided on both sides of the gas storage reservoir; the third air inlet is connected to a hydrogen compression device; and the second air outlet is connected to a hydrogen purification device.

[0014] Preferably, a fourth air inlet is provided on the side wall of the hydrogen purification equipment; a third air outlet is provided at the bottom of the hydrogen purification equipment; and the fourth air inlet is connected to the underground gas storage system.

[0015] Preferably, the soil remediation system includes improved soil; giant fungus grass is arranged on the top of the improved soil; water distribution pipes are arranged around the bottom of the giant fungus grass; the improved soil is connected to a coal gangue pretreatment system; and the water distribution pipes are connected to a drainage water pretreatment system.

[0016] In a second aspect, the present invention provides a method for resource utilization of abandoned coal mines, the method specifically comprising the following steps: The gangue is crushed by the gangue pretreatment equipment, and the crushed gangue is modified by the gangue modification equipment; the modified gangue is temporarily stored in the aerobic fermentation equipment; The drained water is separated from the mud by the drained water pretreatment equipment, and the obtained sludge is discharged to the aerobic fermentation equipment. The obtained drained water enters the drained water filtration device for further purification; the purified water is temporarily stored in the first water tank; part of the water in the first water tank is directly used as the water source for irrigation of the soil remediation system, and the other part enters the ultrafiltration device for deep treatment; the deeply treated water enters the reverse osmosis device, and is further treated and temporarily stored in the second water tank; The water in the second water tank enters the hydrogen production equipment for electrolysis to produce oxygen and hydrogen; the electricity required for the electrolysis process comes from the photovoltaic system; the oxygen is collected and purified and used as ventilation gas during underground mining operations, and the hydrogen enters the hydrogen compression equipment for compression, and the compressed hydrogen enters the underground gas storage system for storage; the hydrogen stored in the underground gas storage system is regularly discharged and purified by the hydrogen purification equipment, and then transported by tank trucks for hydrogenation of hydrogen heavy trucks in the mining area; Crushed crop straw collected from the surrounding area, kitchen waste from the living area of ​​the mining area, sludge from the drainage water pretreatment equipment and modified coal gangue are fermented in an aerobic fermentation equipment, and the heat required in the fermentation process comes from the hydrogen compression device; the fermented and decomposed materials are discharged and temporarily stored as soil conditioners for the soil remediation system; the soil conditioners are added to the soil to be improved to form improved soil; giant fungus grass is planted on the improved soil for soil remediation, and water is regularly transported from the first water tank and distributed through the water distribution pipe for irrigation to ensure the moisture required for the growth of the giant fungus grass; the giant fungus grass is harvested after a certain period of growth, and after harvesting and crushing, it is further used as raw material in the aerobic fermentation equipment.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention uses coal gangue as raw material, and crushes, modifies and aerobically ferments the coal gangue through a coal gangue pretreatment system to produce soil improver for mine restoration; uses drainage water as raw material, and produces hydrogen through a drainage water pretreatment system and a hydrogen production and storage system, and the hydrogen is used in coal transport heavy trucks; and utilizes the ground space of abandoned coal mines to arrange distributed photovoltaic systems; the present invention can realize the resource utilization and waste-free emission of waste, improve the ecological environment of mining areas, realize mine ecological restoration, and at the same time promote the high-quality development of light energy, promote the development of the "photovoltaic + multi-industry" integration model, and provide a new idea for mine restoration and resource utilization and ecological restoration of abandoned coal mines in my country. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a structural schematic diagram of an abandoned coal mine resource utilization system of the present invention; Among them: 1. Coal gangue pretreatment equipment; 101. First motor; 102. Second motor; 103. Third motor; 104. Outrigger; 105. First feed hopper; 106. Coarse crushing roller; 107. Fine crushing roller; 108. First collecting hopper; 109. Upper plate; 110. Lower plate; 111. Lifting shaft; 112. Support platform; 113. Bracket; 114. Second collecting hopper; 115. First discharge port; 2. Coal gangue modification equipment; 201. Second feed hopper; 202. Mixing box; 203. Agitator; 204. Liquid outlet; 205. Atomizer; 206. Air Heater; 207, booster fan; 208, first air inlet; 209, air distribution pipe; 210, first air outlet; 211, storage hopper; 212, second outlet; 3, aerobic fermentation equipment; 301, third feed hopper; 302, mixing shaft; 303, fermentation bin; 304, second air inlet; 305, third outlet; 4, drainage water pretreatment equipment; 401, dosing port; 402, first water inlet; 403, fixed shaft; 404, mobile agitator; 405, partition wall; 406, mud hopper; 407, mud outlet; 408, overflow tank; 409, first liquid outlet; 410 , inclined plate; 5, drainage water filtration device; 501, second liquid outlet; 502, quartz sand layer; 503, activated carbon layer; 504, zeolite layer; 505, liquid inlet; 6, ultrafiltration device; 601, ultrafiltration water inlet; 602, ultrafiltration membrane assembly; 603, ultrafiltration water outlet; 7, first water tank; 701, first water tank water inlet; 702, first water tank water outlet; 8, reverse osmosis device; 801, reverse osmosis water inlet; 802, reverse osmosis membrane assembly; 803, reverse osmosis water outlet; 9, second water tank; 901, second water tank water inlet; 902, second water tank water outlet; 10, hydrogen production equipment ; 1001, second water inlet; 1002, electrolyzer; 1003, oxygen outlet; 1004, first hydrogen outlet; 11, hydrogen compression equipment; 1101, hydrogen inlet; 1102, second hydrogen outlet; 1103, heat recovery equipment; 12, underground gas storage system; 1201, third air inlet; 1202, second air outlet; 1203, gas storage; 13, hydrogen purification equipment; 1301, fourth air inlet; 1302, third air outlet; 14, photovoltaic system; 15, soil remediation system; 1501, soil improvement; 1502, water distribution pipe; 1503, giant fungus grass. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings: like Figure 1As shown, the first object of the present invention is to provide an abandoned coal mine resource utilization system, including a gangue pretreatment system, a drainage water pretreatment system, a hydrogen production and storage system, a photovoltaic system 14 and a soil remediation system 15; the gangue pretreatment system is connected to the hydrogen production and storage system and the soil remediation system 15 respectively; the drainage water pretreatment system is connected to the hydrogen production and storage system and the soil remediation system 15 respectively; the photovoltaic system 14 is connected to the hydrogen production and storage system.

[0027] The gangue pretreatment system comprises a gangue pretreatment device 1, a gangue modification device 2 and an aerobic fermentation device 3 which are connected in sequence; the aerobic fermentation device 3 is connected to a hydrogen production and storage system and a soil remediation system 15 respectively.

[0028] The gangue pretreatment equipment 1 is provided with a first feed hopper 105 on the top; the first feed hopper 105 is connected to a coarse crushing roller shaft 106; a fine crushing roller shaft 107 is provided below the coarse crushing roller shaft 106; a first collecting hopper 108 is provided below the fine crushing roller shaft 107; the first collecting hopper 108 is connected to an upper plate 109; a lower plate 110 is provided below the upper plate 109; the upper part of the lower plate 110 is upwardly protruding, and a gap structure is provided between the upper plate 109 and the lower plate 110; the upper plate 109 is provided with a central channel; the central channel is divided into The lower plate 110 is connected to the lifting shaft 111; a second collecting hopper 114 is arranged below the lower plate 110; a plurality of brackets 113 are arranged on the second collecting hopper 114; a plurality of brackets 113 are connected to the supporting platform 112; the lifting shaft 111 is connected to the supporting platform 112; a first discharge port 115 is arranged at the bottom of the gangue pretreatment equipment 1; the first discharge port 115 is connected to the second collecting hopper 114; the first discharge port 115 is connected to the gangue modification equipment 2.

[0029] The outer wall of the gangue pretreatment equipment 1 is provided with a first motor 101, a second motor 102 and a third motor 103; the coarse crushing roller 106 is connected to the first motor 101; the fine crushing roller 107 is connected to the second motor 102; and the lifting shaft 111 is connected to the third motor 103. The first motor 101 and the second motor 102 provide power to the coarse crushing roller 106 and the fine crushing roller 107 respectively, driving them to rotate, ensuring that the gangue can be quickly crushed into smaller particles after entering the equipment. By adjusting the speed of the motor, the crushing force and efficiency can be controlled to adapt to gangue of different hardness and particle size. The third motor 103 is used to drive the lifting shaft 111 to rise to further crush the gangue.

[0030] The internal space of the void structure gradually decreases from the middle to the edge, and the crushed coal gangue falls from the edge of the void structure.

[0031] The first collecting hopper 108 and the second collecting hopper 114 are both funnel-shaped; the funnel-shaped design allows the crushed coal gangue particles to flow smoothly into the area below, thereby avoiding accumulation or blockage of materials in the collecting hopper.

[0032] The bottom of the gangue pretreatment equipment 1 is provided with legs 104 to support the entire equipment.

[0033] The top of the gangue modification device 2 is provided with a second feed hopper 201; the second feed hopper 201 is used to feed gangue, binder, foaming agent and water. The second feed hopper 201 is connected to the first discharge port 115 of the gangue pretreatment device 1; a mixing liquid box 202 is provided inside the gangue modification device 2; the mixing liquid box 202 is connected to the second feed hopper 201; a stirrer 203 is provided inside the mixing liquid box 202; the stirrer 203 is used to accelerate the mixing process of gangue and modifier, and by rotating or swinging, the stirrer 203 can break the agglomeration between materials and promote the uniform distribution of the modifier between the gangue particles. The bottom of the mixing tank 202 is provided with a liquid outlet pipe 204; the liquid outlet pipe 204 is connected to the atomizer 205; a plurality of air distribution pipes 209 are provided below the atomizer 205; the plurality of air distribution pipes 209 are connected to the first air inlet 208; a storage hopper 211 is provided below the air distribution pipe 209; a second outlet 212 is provided at the bottom of the gangue modification equipment 2; the second outlet 212 is respectively connected to the storage hopper 211 and the aerobic fermentation equipment 3. The side wall of the gangue modification equipment 2 is provided with a first air outlet 210, and the waste gas generated during the modification process is discharged in compliance with the standards.

[0034] The gangue modification device 2 is provided with a booster fan 207 and an air heater 206; the first air inlet 208 is connected to the booster fan 207; the booster fan 207 is connected to the air heater 206. The air heater 206 can heat the gas entering the gangue modification device 2 to a desired temperature. The heated gas can more effectively promote the reaction between the gangue particles and the modifier. Through the pressure provided by the booster fan 207, the gas can be more evenly distributed between the gangue particles, promoting the full contact and reaction between the binder, the foaming agent and the water and the gangue.

[0035] The aerobic fermentation equipment 3 includes a fermentation bin 303; a third feed hopper 301 is provided on the top of the fermentation bin 303; the third feed hopper 301 is connected to the second discharge port 212 of the gangue modification equipment 2; a third discharge port 305 is provided at the bottom of the fermentation bin 303; a second air inlet 304 is provided on the side of the fermentation bin 303, and the oxygen required for fermentation enters through the second air inlet 304, and the heat required for fermentation comes from the heat recovery device 1103 of the hydrogen compression device 11. A plurality of mixing shafts 302 are provided inside the third feed hopper 301, which can effectively mix different types of materials.

[0036] The drain water pretreatment system includes a drain water pretreatment device 4, a drain water filtration device 5, a first water tank 7, an ultrafiltration device 6, a reverse osmosis device 8 and a second water tank 9 which are connected in sequence; the first water tank 7 is connected to a soil remediation system 15; and the second water tank 9 is connected to a hydrogen production and storage system. Through the steps of pretreatment, filtration, ultrafiltration and reverse osmosis, the drain water pretreatment system converts the drain water into irrigation water and hydrogen production water source. The recycling of water resources is achieved, the waste of water resources is avoided, and clean and sustainable raw materials are provided for the hydrogen production process.

[0037] The drain water pretreatment equipment 4 is a concrete tank body, and its side wall is provided with a first water inlet 402 and a first liquid outlet 409; the first liquid outlet 409 is connected to the drain water filter 5; an overflow trough 408 is provided on the inner wall of the drain water pretreatment equipment 4; the overflow trough 408 is connected to the first liquid outlet 409; a partition wall 405 is provided inside the drain water pretreatment equipment 4; a mobile stirrer 404 is provided on one side of the partition wall 405, and an inclined plate 410 is provided on the other side; the mobile stirrer 404 is connected to a fixed shaft 403; the fixed shaft 403 is provided on the inner wall of the drain water pretreatment equipment 4. A mud hopper 406 is provided at the bottom of the inclined plate 410; a mud outlet 407 is provided at the bottom of the drain water pretreatment equipment 4; the mud hopper 406 is connected to the mud outlet 407. The top of the drainage water pretreatment equipment 4 is provided with a dosing port 401; the dosing port 401 is located above the mobile stirrer 404. The dosing port 401 enables the addition of chemical agents such as polyaluminium chloride (PAC) and polyacrylamide (PAM) to the drainage water to promote the coagulation and precipitation of suspended matter. With stable support by the fixed shaft 403, the mobile stirrer 404 can efficiently stir the mixture of drainage water and agents to ensure that the agents are fully dissolved and evenly dispersed, thereby improving the mixing efficiency and accelerating the coagulation process of suspended matter. The inclined plate 410 realizes the accelerated precipitation of the mixed liquid and the separation of mud and water. The precipitated sludge is collected in the sludge hopper 406 and discharged from the mud outlet 407. The supernatant after precipitation overflows through the overflow trough 408 and enters the drainage water filtration device 5.

[0038] The bottom of the drain water filter device 5 is provided with a liquid inlet 505; the top of the drain water filter device 5 is provided with a second liquid outlet 501; the liquid inlet 505 is connected to the first liquid outlet 409; the second liquid outlet 501 is connected to the first water tank 7; the drain water filter device 5 is provided with a filter layer, which includes a quartz sand layer 502, an activated carbon layer 503 and a zeolite layer 504 from top to bottom. Quartz sand, as a filter medium, can remove impurities such as suspended matter and colloids in water, and play a role in physical filtration; activated carbon has a strong adsorption capacity, which can remove organic matter, residual chlorine, chromaticity, etc. in water, and further purify water quality; zeolite has excellent adsorption performance, which can effectively remove heavy metal ions, ammonia nitrogen and other harmful substances in water, and improve water quality. Through the synergistic effect of the quartz sand layer 502, the activated carbon layer 503 and the zeolite layer 504, multi-stage filtration and purification of drain water is achieved, and harmful substances and impurities in water are effectively removed.

[0039] The first water tank 7 is provided with a first water tank inlet 701 at the top; the first water tank inlet 701 is connected to the second liquid outlet 501; the first water tank 7 is provided with a first water tank outlet 702 at the bottom of the side wall; the first water tank outlet 702 is connected to the ultrafiltration device 6; part of the water stored in the first water tank 7 is used for irrigation of the soil remediation system 15, and the other part is used as a water source for hydrogen production after further deep treatment. The first water tank outlet 702 is connected to the water distribution pipe 1502 of the soil remediation system 15 and the ultrafiltration water inlet 601.

[0040] The ultrafiltration device 6 includes an ultrafiltration water inlet 601, an ultrafiltration membrane assembly 602 and an ultrafiltration water outlet 603; the ultrafiltration water inlet 601 and the ultrafiltration water outlet 603 are connected through the ultrafiltration membrane assembly 602; the ultrafiltration water inlet 601 is connected to the first water tank water outlet 702; the ultrafiltration water outlet 603 is connected to the reverse osmosis device 8. The membrane assembly has excellent separation performance and can effectively remove impurities such as tiny particles, bacteria, viruses, etc. in water, while retaining minerals and trace elements in water.

[0041] The reverse osmosis device 8 includes a reverse osmosis water inlet 801, a reverse osmosis membrane assembly 802 and a reverse osmosis water outlet 803; the reverse osmosis water inlet 801 and the reverse osmosis water outlet 803 are connected through the reverse osmosis membrane assembly 802; the reverse osmosis water inlet 801 is connected to the ultrafiltration water outlet 603; the reverse osmosis water outlet 803 is connected to the second water tank 9. The reverse osmosis membrane assembly 802 has an extremely high desalination rate and retention rate, and can effectively remove impurities such as soluble salts, colloids, organic matter, bacteria, etc. in the water, so that the outlet water reaches a higher purity. A second water tank water inlet 901 is arranged on the top of the second water tank 9; the second water tank water inlet 901 is connected to the reverse osmosis water outlet 803; and a second water tank water outlet 902 is arranged at the bottom of the side wall of the second water tank.

[0042] The hydrogen production and storage system includes a hydrogen production device 10, a hydrogen compression device 11, an underground gas storage system 12 and a hydrogen purification device 13 which are connected in sequence; the hydrogen production device 10 is respectively connected to a photovoltaic system 14 and a drainage water pretreatment system; the hydrogen compression device 11 is connected to a coal gangue pretreatment system.

[0043] The hydrogen production equipment 10 includes a second water inlet 1001, an electrolyzer 1002, an oxygen outlet 1003 and a first hydrogen outlet 1004; the second water inlet 1001 is arranged on the side wall of the electrolyzer 1002; the oxygen outlet 1003 and the first hydrogen outlet 1004 are arranged at intervals on the top of the electrolyzer 1002; the second water inlet 1001 is connected to the drainage water pretreatment system; the first hydrogen outlet 1004 is connected to the hydrogen compression equipment 11; the electrolyzer 1002 is connected to the photovoltaic system 14. The photovoltaic system 14 is a distributed photovoltaic power generation system installed on the ground space of the abandoned coal mine. The photovoltaic system 14 not only utilizes idle land, but also the electricity generated by the photovoltaic system 14 can be self-sufficient, providing power for the entire resource utilization system, and the excess electricity can also be connected to the grid for sale to increase economic benefits.

[0044] The side wall of the hydrogen compression device 11 is provided with a hydrogen inlet 1101 and a heat recovery device 1103; the top of the hydrogen compression device 11 is provided with a second hydrogen outlet 1102; the hydrogen inlet 1101 is connected to the hydrogen production device 10; the second hydrogen outlet 1102 is connected to the underground gas storage system 12. The heat generated by the compressed hydrogen is recovered by the heat recovery device 1103 and used to heat the aerobic fermentation device 3.

[0045] The underground gas storage system 12 includes a gas storage reservoir 1203; the gas storage reservoir 1203 is provided with a third air inlet 1201 and a second air outlet 1202 connected thereto on both sides; the third air inlet 1201 is connected to the hydrogen compression device 11; the second air outlet 1202 is connected to the hydrogen purification device 13. The gas storage reservoir 1203 mainly utilizes caves formed by coal mining with stable structure and good sealing, and uses underground caves to store hydrogen safely and efficiently. It not only solves the safety problem of hydrogen storage, but also utilizes the space resources of abandoned coal mines. At the same time, hydrogen, as a clean energy, can be used in heavy-duty transportation tools such as coal-carrying heavy trucks to reduce carbon emissions.

[0046] The side wall of the hydrogen purification device 13 is provided with a fourth air inlet 1301 ; the bottom of the hydrogen purification device 13 is provided with a third air outlet 1302 ; the fourth air inlet 1301 is connected to the underground gas storage system 12 .

[0047] The soil remediation system 15 includes improved soil 1501; giant fungus grass 1503 is arranged on the top of the improved soil 1501; a water distribution pipe 1502 is arranged around the bottom of the giant fungus grass 1503; the improved soil 1501 is connected to the coal gangue pretreatment system; and the water distribution pipe 1502 is connected to the drainage water pretreatment system. The soil remediation system 15 uses the soil conditioner produced by the coal gangue pretreatment system for mine soil remediation, uses the water produced by the drainage water pretreatment system for soil irrigation, and plants giant fungus grass 1503 to improve the soil.

[0048] The second object of the present invention is to provide a method for resource utilization of abandoned coal mines, which method specifically comprises the following steps: The gangue is crushed by the gangue pretreatment equipment 1, and the crushed gangue is modified by the gangue modification equipment 2; the modified gangue is temporarily stored in the aerobic fermentation equipment 3; The drained water is separated from the mud by the drained water pretreatment equipment 4, and the obtained sludge is discharged to the aerobic fermentation equipment 3, and the obtained drained water enters the drained water filtration device 5 for further purification; the purified water is temporarily stored in the first water tank 7; part of the water in the first water tank 7 is directly used as the water source for irrigation of the soil remediation system 15, and the other part enters the ultrafiltration device 6 for deep treatment; the deeply treated water enters the reverse osmosis device 8, and is further treated and temporarily stored in the second water tank 9; The water in the second water tank 9 enters the hydrogen production equipment 10 for electrolysis to produce oxygen and hydrogen; the electricity required for the electrolysis process comes from the photovoltaic system 14; the oxygen is collected and purified as ventilation gas during the underground mining operation, and the hydrogen enters the hydrogen compression equipment 11 for compression, and the compressed hydrogen enters the underground gas storage system 12 for storage; the hydrogen stored in the underground gas storage system 12 is regularly discharged and purified by the hydrogen purification equipment 13, and then transported by tank trucks for hydrogenation of hydrogen heavy trucks in the mining area; The crushed crop straw collected from the surrounding area, the kitchen waste from the living area of ​​the mining area, and the sludge and modified coal gangue from the drainage water pretreatment equipment 4 are fermented in the aerobic fermentation equipment 3, and the heat required for the fermentation process comes from the hydrogen compression device 11; the fermented and decomposed materials are discharged and temporarily stored as soil conditioners for the soil remediation system 15; the soil conditioner is added to the soil to be improved to form improved soil 1501; giant fungus grass 1503 is planted on the improved soil 1501 for soil remediation, and water is regularly transported from the first water tank 7 and distributed through the water distribution pipe 1502 for irrigation to ensure the moisture required for the growth of the giant fungus grass 1503; the giant fungus grass 1503 is harvested after a certain period of growth, and after harvesting and crushing, it is further utilized as raw material in the aerobic fermentation equipment 3.

[0049] Specifically, the gangue enters the gangue pretreatment equipment 1 from the top of the first feed hopper 105, is first crushed by the coarse crushing roller 106, and then crushed by the fine crushing roller 107 and temporarily stored in the first collecting hopper 108. The crushed gangue enters the gap structure between the upper plate 109 and the lower plate 110 through the central channel of the upper plate 109, and the lifting shaft 111 drives the lower plate 110 to rotate and rise to further crush the gangue. The crushed gangue falls from the edge of the lower plate 110 into the second collecting hopper 114 for temporary storage, and is discharged from the first discharge port 115 to the second feed hopper 201; at the same time, the binder, foaming agent and water also enter from the second feed hopper 201, and the materials entering the mixing box 202 are fully mixed and reacted under the stirring of the agitator 203, and are discharged from the liquid outlet pipe 204 set at the bottom of the mixing box 202. The discharged mixed liquid is atomized by the atomizer 205 and moves from top to bottom in the device. The air is heated by the air heater 206, and after being pressurized by the booster fan 207, it enters the gangue modification device 2 through the first air inlet 208, and is fully dispersed under the action of the air distribution pipe 209. The hot air exchanges heat with the atomized liquid during the upward movement from the bottom of the gangue modification device 2 to form particles. The particles formed after drying are temporarily stored in the storage hopper 211, and are regularly discharged from the second discharge port 212 and temporarily stored in the third feed hopper 301 of the aerobic fermentation device 3. The crushed crop straw collected from the surrounding area, the kitchen waste from the living area of ​​the mining area, the sludge and the modified gangue are crushed and mixed in the third feed hopper 301 through the multi-stage mixing shaft 302. The mixed materials enter the fermentation chamber 303, which rotates and ferments at a certain temperature. The oxygen required for the fermentation process enters through the second air inlet 304, and the required heat comes from the heat recovery device 1103 of the hydrogen compression device 11. After a period of time, the fermented and decomposed materials are discharged from the third discharge port 305 as a soil conditioner for the soil remediation system 15.

[0050] The drainage water generated during the coal mining process enters the drainage water pretreatment device 4 from the first water inlet 402 and is fully mixed with the PAC and PAM entering from the dosing port 401 under the action of the mobile agitator 404. The mixed liquid overflows from the top of the partition wall 405, and is accelerated to settle under the action of the inclined plate 410 to achieve mud and water separation. The settled sludge is collected in the sludge hopper 406 and discharged from the mud outlet 407. The supernatant after precipitation overflows through the overflow tank 408 and is transported from the first liquid outlet 409 to the liquid inlet 505 set at the bottom of the drainage water filtration device 5, and passes through the zeolite layer 504, the activated carbon layer 503 and the quartz sand layer 502 in sequence to remove pollutants in the water and further purify the water quality. The filtered water is discharged from the second liquid outlet 501 to the first water tank inlet 701 and temporarily stored in the first water tank 7. Part of the water in the first water tank 7 is directly used as a water source for irrigation of the soil remediation system 15, and the other part is transported to the ultrafiltration inlet 601 through the first water tank outlet 702. Under the action of the reverse osmosis membrane assembly 602, the water is purified, and the purified water is discharged from the ultrafiltration outlet 603 to the reverse osmosis inlet 801. Under the action of the reverse osmosis membrane assembly 802, the water is purified, and the purified water is discharged from the reverse osmosis outlet 803 to the second water tank 9 for temporary storage. The water in the second water tank 9 is used as a hydrogen production water source, and is discharged from the second water tank outlet 902, and enters from the second water inlet 1001 of the hydrogen production equipment 10, and is electrolyzed under the action of the electrolyzer 1002 to produce hydrogen and oxygen. The produced oxygen is discharged from the oxygen outlet 1003, and is collected and purified as ventilation gas during the underground mining operation. The produced hydrogen is discharged from the first hydrogen outlet 1004 for further processing. The electric energy required in the electrolysis process comes from the distributed photovoltaic arranged in the mining area, that is, the photovoltaic system 14.

[0051] The hydrogen from the hydrogen production equipment 10 enters the hydrogen compression equipment 11 through the hydrogen inlet 1101 to compress the hydrogen, and the compressed hydrogen is discharged from the second hydrogen outlet 1102, and enters the underground gas storage system 12 through the third gas inlet 1201, and is stored in the gas storage 1203. The stored hydrogen is regularly discharged from the second gas outlet 1202, purified by the hydrogen purification equipment 13, and transported by tank trucks for hydrogenation of hydrogen heavy trucks in mining areas.

[0052] The soil conditioner produced by the aerobic fermentation equipment 3 is used to improve the soil in the mining area, and giant fungus grass 1503 is planted on the improved soil for soil remediation. Water is regularly transported from the first water tank 7 and distributed through the water distribution pipe 1502 for irrigation to ensure the moisture required for the growth of giant fungus grass 1503. After a certain period of growth, the giant fungus grass 1503 is harvested and crushed for further use as raw material in the aerobic fermentation equipment 3.

[0053] Among them, the particle size of the coal gangue entering the first feeding hopper 105 is 5-10cm, the particle size of the coal gangue after being crushed by the coarse crushing roller 106 is 2-5cm, the particle size of the coal gangue after being crushed by the fine crushing roller 107 is 0.5-1cm, and the particle size of the coal gangue after being ground by the upper plate 109 and the lower plate 110 is 0.5-1mm; the binder is cement, multi-component self-gelling powder or industrial starch, the foaming agent is aluminum powder, sodium perborate or sulfuric acid, the added amount of the binder is 8%-12% of the coal gangue, the added amount of the foaming agent is 2%-5% of the coal gangue, and the air heater 206 heats the air to 200-300℃. The moisture content of the mixed material in the fermentation bin 303 is adjusted to between 50-60%, the C / N is adjusted to between 20-35, the fermentation temperature is 50-60°C, the fermentation time is 10-12 days, and the moisture content of the material after decomposition is within the range of 30%-40%. The water quality in the first water tank 7 meets the "Agricultural Irrigation Water Quality Standard GB5084-2021", and the water quality in the second water tank 9 meets the "Technical Requirements for Water Electrolysis Hydrogen Production System (GB / T 19774-2005)".

[0054] The present invention realizes the resource utilization of wastes such as coal gangue and drainage water; significantly improves the ecological environment of the mining area and promotes ecological balance. The present invention proposes a new idea of ​​the "photovoltaic + multi-industry" integration model, provides a demonstration case for mine restoration and resource utilization, promotes the transition from fossil energy to clean energy, reduces carbon emissions, and promotes green and sustainable development. The electricity production and hydrogen sales of the photovoltaic system 14 bring economic returns to the system, while providing employment opportunities and promoting local economic development. The present invention not only solves the environmental problems caused by abandoned coal mines, but also realizes the efficient utilization of resources and the gradual restoration of the ecology through technological innovation, providing valuable experience and inspiration for mine restoration and resource recycling in my country and even the world.

[0055] Example 1 The gangue with an average particle size of 10 cm enters the gangue pretreatment equipment 1 from the first feed hopper 105, is crushed to a particle size of 5 cm by the coarse crushing roller 106, and then crushed to a particle size of 1 cm by the fine crushing roller 107, and finally the particle size is 1 mm after grinding by the upper and lower plates. It is discharged from the first discharge port 115 and temporarily stored in the second feed hopper 201, and 8% of the binder, 2% of the foaming agent, and an appropriate amount of water are added, and it is fully stirred and mixed by the agitator 203 in the mixing tank 202, and discharged through the liquid outlet pipe 204. It is atomized by the atomizer 205, and after heat exchange with the air heated to 200°C by the air heater 206, it forms modified particles and is discharged through the second discharge port 212. The modified particles are fully mixed with the crushed straw, kitchen waste, and sludge under the action of the mixing shaft 302, and the moisture content of the mixed material is 50%, the C / N ratio is 20, the fermentation temperature is 50°C, and the fermentation is 12 days. After the fermentation is completed, the moisture content of the material is 30%, and the material is temporarily stored. The drainage water generated in the mineral mining process enters the drainage water pretreatment equipment 4 from the first water inlet 402, and is fully mixed by adding appropriate amounts of PAC and PAM under the action of the mobile agitator 404. Overflow from the top of the partition wall 405, the sedimentation is accelerated under the action of the inclined plate 410 to achieve mud and water separation, and the precipitated sludge is collected in the sludge hopper 406, discharged from the mud outlet 407, and further processed in the aerobic fermentation equipment 3. The supernatant after precipitation overflows through the overflow trough 408 and enters the drainage water filtration device 5. It passes through the zeolite layer 504, the activated carbon layer 503 and the quartz sand layer 502 in sequence and enters the first water tank 7 for temporary storage. The water quality of the first water tank 7 meets the "Agricultural Irrigation Water Quality Standard GB5084-2021". A portion of the water is further purified by the ultrafiltration device 6 and the reverse osmosis device 8 and temporarily stored in the second water tank 9. The water quality of the second water tank 9 meets the "Technical Requirements for Water Electrolysis Hydrogen Production System (GB / T 19774-2005)". It is discharged from the second water tank outlet 902 into the second water inlet 1001 of the hydrogen production equipment 10, and hydrogen and oxygen are produced under the action of the electrolyzer 1002. After the oxygen is collected and purified, it is used as ventilation gas during underground mining operations. Hydrogen is compressed by the hydrogen compression equipment 11 and stored in the gas storage 1203. After being regularly discharged from the second gas outlet 1202 and purified and purified by the hydrogen purification equipment 13 to obtain hydrogen with a purity of 99.9vol%, it is transported by tank trucks for use in mining area hydrogen heavy trucks. The soil conditioner produced by the aerobic fermentation equipment 3 is used to improve the soil in the mining area. Giant fungus grass 1503 is planted on the improved soil for soil remediation. Water is regularly transported from the first water tank 7 and distributed through the water distribution pipe 1502 for irrigation to ensure the moisture required for the growth of giant fungus grass 1503. After a certain period of growth, the giant fungus grass 1503 is harvested and crushed for further use as raw materials in the aerobic fermentation equipment 3. Photovoltaic arrangement A distributed photovoltaic power generation system is installed in the ground space of the abandoned coal mine to form a photovoltaic system 14 to provide electricity for the electrolytic cell.

[0056] Example 2 The gangue with an average particle size of 5 cm enters the gangue pretreatment equipment 1 from the first feed hopper 105, is crushed to a particle size of 2 cm by the coarse crushing roller 106, and then crushed to a particle size of 0.5 cm by the fine crushing roller 107, and finally the particle size is 0.5 mm after grinding by the upper and lower plates. It is discharged from the first discharge port 115 and temporarily stored in the second feed hopper 201, and 12% of the binder, 5% of the foaming agent, and an appropriate amount of water are added, and it is fully stirred and mixed by the agitator 203 in the mixing tank 202, and discharged through the liquid outlet pipe 204. It is atomized by the atomizer 205, and after heat exchange with the air heated to 300°C by the air heater 206, it forms modified particles and is discharged through the second discharge port 212. The modified particles are fully mixed with the crushed straw, kitchen waste, and sludge under the action of the mixing shaft 302, and the moisture content of the mixed material is 60%, the C / N ratio is 35, the fermentation temperature is 60°C, and the fermentation is 10 days. After the fermentation is completed, the moisture content of the material is 40%, and the material is temporarily stored. The drainage water generated in the mineral mining process enters the drainage water pretreatment equipment 4 from the first water inlet 402, and is fully mixed by adding an appropriate amount of PAC and PAM under the action of the mobile agitator 404. Overflow from the top of the partition wall 405, the sedimentation is accelerated under the action of the inclined plate 410 to achieve mud and water separation, and the precipitated sludge is collected in the sludge hopper 406, discharged from the mud outlet 407, and further processed in the aerobic fermentation equipment 3. The supernatant after precipitation overflows through the overflow trough 408 and enters the drainage water filtration device 5. It passes through the zeolite layer 504, the activated carbon layer 503 and the quartz sand layer 502 in sequence and enters the first water tank 7 for temporary storage. The water quality of the first water tank 7 meets the "Agricultural Irrigation Water Quality Standard GB5084-2021". A portion of the water is further purified by the ultrafiltration device 6 and the reverse osmosis device 8 and temporarily stored in the second water tank 9. The water quality of the second water tank 9 meets the "Technical Requirements for Water Electrolysis Hydrogen Production System (GB / T 19774-2005)". It is discharged from the second water tank outlet 902 into the second water inlet 1001 of the hydrogen production equipment 10, and hydrogen and oxygen are produced under the action of the electrolyzer 1002. After the oxygen is collected and purified, it is used as ventilation gas during underground mining operations. Hydrogen is compressed by the hydrogen compression equipment 11 and stored in the gas storage 1203. After being regularly discharged from the second gas outlet 1202 and purified and purified by the hydrogen purification equipment 13 to obtain hydrogen with a purity of 99.9vol%, it is transported by tank trucks for use in mining area hydrogen heavy trucks. The soil conditioner produced by the aerobic fermentation equipment 3 is used to improve the soil in the mining area. Giant fungus grass 1503 is planted on the improved soil for soil remediation. Water is regularly transported from the first water tank 7 and distributed through the water distribution pipe 1502 for irrigation to ensure the moisture required for the growth of giant fungus grass 1503. After a certain period of growth, the giant fungus grass 1503 is harvested and crushed for further use as raw materials in the aerobic fermentation equipment 3. Photovoltaic arrangement A distributed photovoltaic power generation system is installed in the ground space of the abandoned coal mine to form a photovoltaic system 14 to provide electricity for the electrolytic cell.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A system for recycling abandoned coal mine resources, characterized in that: The invention comprises a coal gangue pretreatment system, a drainage water pretreatment system, a hydrogen production and storage system, a photovoltaic system (14) and a soil remediation system (15); the coal gangue pretreatment system is connected to the hydrogen production and storage system and the soil remediation system (15) respectively; the drainage water pretreatment system is connected to the hydrogen production and storage system and the soil remediation system (15) respectively; and the photovoltaic system (14) is connected to the hydrogen production and storage system.

2. The abandoned coal mine resource utilization system according to claim 1, characterized in that: The gangue pretreatment system comprises a gangue pretreatment device (1), a gangue modification device (2) and an aerobic fermentation device (3) which are connected in sequence; the aerobic fermentation device (3) is respectively connected to a hydrogen production and storage system and a soil remediation system (15).

3. The abandoned coal mine resource utilization system according to claim 1, characterized in that: The drain water pretreatment system comprises a drain water pretreatment device (4), a drain water filtration device (5), a first water tank (7), an ultrafiltration device (6), a reverse osmosis device (8) and a second water tank (9) which are connected in sequence; the first water tank (7) is connected to a soil remediation system (15); and the second water tank (9) is connected to a hydrogen production and storage system.

4. The abandoned coal mine resource utilization system according to claim 1, characterized in that: The hydrogen production and storage system comprises a hydrogen production device (10), a hydrogen compression device (11), an underground gas storage system (12) and a hydrogen purification device (13) which are connected in sequence; the hydrogen production device (10) is connected to a photovoltaic system (14) and a drainage water pretreatment system respectively; and the hydrogen compression device (11) is connected to a coal gangue pretreatment system.

5. The abandoned coal mine resource utilization system according to claim 4 is characterized in that: The hydrogen production equipment (10) comprises a second water inlet (1001), an electrolyzer (1002), an oxygen outlet (1003) and a first hydrogen outlet (1004); the second water inlet (1001) is arranged on the side wall of the electrolyzer (1002); the oxygen outlet (1003) and the first hydrogen outlet (1004) are arranged at intervals on the top of the electrolyzer (1002); the second water inlet (1001) is connected to a drain water pretreatment system; the first hydrogen outlet (1004) is connected to a hydrogen compression device (11); and the electrolyzer (1002) is connected to a photovoltaic system (14).

6. The abandoned coal mine resource utilization system according to claim 4 is characterized in that: The side wall of the hydrogen compression device (11) is provided with a hydrogen inlet (1101) and a heat recovery device (1103); the top of the hydrogen compression device (11) is provided with a second hydrogen outlet (1102); the hydrogen inlet (1101) is connected to the hydrogen production device (10); and the second hydrogen outlet (1102) is connected to the underground gas storage system (12).

7. The abandoned coal mine resource utilization system according to claim 4 is characterized in that: The underground gas storage system (12) comprises a gas storage reservoir (1203); a third gas inlet (1201) and a second gas outlet (1202) connected thereto are respectively arranged on both sides of the gas storage reservoir (1203); the third gas inlet (1201) is connected to a hydrogen compression device (11); and the second gas outlet (1202) is connected to a hydrogen purification device (13).

8. The abandoned coal mine resource utilization system according to claim 4, characterized in that: The side wall of the hydrogen purification device (13) is provided with a fourth air inlet (1301); the bottom of the hydrogen purification device (13) is provided with a third air outlet (1302); and the fourth air inlet (1301) is connected to the underground gas storage system (12).

9. The abandoned coal mine resource utilization system according to claim 1, characterized in that: The soil remediation system (15) comprises improved soil (1501); giant fungus grass (1503) is arranged on the top of the improved soil (1501); a water distribution pipe (1502) is arranged around the bottom of the giant fungus grass (1503); the improved soil (1501) is connected to a coal gangue pretreatment system; and the water distribution pipe (1502) is connected to a drainage water pretreatment system.

10. A method for resource utilization of abandoned coal mines, characterized in that: The abandoned coal mine resource recovery system according to any one of claims 1 to 9 is adopted, and the method specifically comprises the following steps: The gangue is crushed by the gangue pretreatment equipment (1), and the crushed gangue is modified by the gangue modification equipment (2); the modified gangue is temporarily stored in the aerobic fermentation equipment (3); The drained water is separated from the sludge by the drained water pretreatment device (4), and the obtained sludge is discharged to the aerobic fermentation device (3). The obtained drained water enters the drained water filtration device (5) for further purification; the purified water is temporarily stored in the first water tank (7); part of the water in the first water tank (7) is directly used as a water source for irrigation of the soil remediation system (15), and the other part enters the ultrafiltration device (6) for deep treatment; the deeply treated water enters the reverse osmosis device (8), and is further treated and temporarily stored in the second water tank (9); The water in the second water tank (9) enters the hydrogen production equipment (10) for electrolysis to produce oxygen and hydrogen; the electric energy required for the electrolysis process comes from the photovoltaic system (14); the oxygen is collected and purified and used as ventilation gas during the underground mining operation, and the hydrogen enters the hydrogen compression equipment (11) for compression, and the compressed hydrogen enters the underground gas storage system (12) for storage; the hydrogen stored in the underground gas storage system (12) is regularly discharged and purified by the hydrogen purification equipment (13), and then transported by tank trucks for hydrogenation of hydrogen heavy trucks in the mining area; The crushed crop straw collected from the surrounding area, the food waste from the living area of ​​the mining area, the sludge from the drainage water pretreatment equipment (4) and the modified coal gangue are fermented in the aerobic fermentation equipment (3), and the heat required in the fermentation process comes from the hydrogen compression device (11); the fermented and decomposed materials are discharged and temporarily stored as soil conditioners for the soil remediation system (15); the soil conditioners are added to the soil to be improved to form improved soil (1501); giant fungus grass (1503) is planted on the improved soil (1501) for soil remediation, and water is regularly transported from the first water tank (7) and distributed through the water distribution pipe (1502) for irrigation to ensure the moisture required for the growth of the giant fungus grass (1503); after a certain period of growth, the giant fungus grass (1503) is harvested, and after being harvested and crushed, it is further used as a raw material in the aerobic fermentation equipment (3).

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