A process for preparing garden fertilizer by degrading general industrial solid waste with microorganisms

Abstract

The application provides a process for preparing garden fertilizer by degrading general industrial solid waste by microorganisms, and relates to the field of industrial solid waste treatment. The process for preparing garden fertilizer by degrading general industrial solid waste by microorganisms comprises the following steps: S1: first, the industrial solid waste to be degraded is introduced into an anaerobic tank, and the first stage adopts a contact anaerobic tank filled with high-density filler to improve the biological treatment load and preliminarily decompose complex organic matter. In the application, the combination of multi-stage biological degradation and membrane separation technology realizes efficient decomposition of complex organic matter in industrial solid waste, the optimization of microbial community and the addition of organic matter modifier significantly improve the organic matter content and nutrient balance of the fertilizer, promote the healthy growth of plants, meet the dual needs of high nutrition and harmless treatment of users, and the work of the pumping pump helps the feeding pipe to achieve the purpose of pumping and conveying biological enzymes and adsorbents.

Description

Technical Field

[0001] This invention relates to the field of industrial solid waste treatment, specifically a process for preparing garden fertilizer by utilizing microorganisms to degrade general industrial solid waste. Background Technology

[0002] Industrial solid waste treatment methods include compaction, crushing, sorting, solidification, incineration, and biological treatment. Compaction is a pretreatment technology that reduces the volume of waste, lowers transportation costs, and extends landfill life. It is suitable for solid waste that is compacted to reduce volume, such as automobiles, aluminum cans, and plastic bottles. It is not suitable for certain wastes that may cause operational problems, such as tar, sludge, or liquid materials.

[0003] Currently, industrial solid waste treatment faces severe challenges. Traditional landfill and incineration methods not only occupy a large amount of land resources but may also cause environmental pollution. Meanwhile, the market for garden fertilizers is growing, and the demand for environmentally friendly, high-quality fertilizers is continuously rising. Existing solid waste treatment technologies are inefficient, costly, and difficult to achieve effective resource recovery. At the same time, the preparation of garden fertilizers often relies on natural raw materials, which poses a risk of resource depletion. There have been attempts to treat solid waste and use it for fertilizer improvement through physical or chemical methods, but these methods are often energy-intensive, complex to operate, costly, and may introduce new environmental problems. Although biodegradation is environmentally friendly, it has shortcomings in degradation rate and product performance. As an emerging environmental protection method, microbial degradation technology needs to overcome technical difficulties such as degradation efficiency and product quality control. However, policy support for green technologies and increasing market demand provide a good opportunity for technological breakthroughs. Therefore, those skilled in the art provide a process for preparing garden fertilizers using microbial degradation of general industrial solid waste to solve the problems mentioned in the background. Summary of the Invention

[0004] 1. Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a process for preparing garden fertilizer by utilizing microbial degradation of general industrial solid waste, thus solving the problems mentioned in the background technology.

[0005] 2. Technical Solution To achieve the above objectives, the present invention provides the following technical solution: A process for preparing garden fertilizer by utilizing microbial degradation of general industrial solid waste includes the following steps: S1: First, the industrial solid waste to be degraded is introduced into the anaerobic tank, which is the first stage. The first stage uses a contact anaerobic tank filled with high-density packing material to increase the biological treatment load and initially decompose complex organic matter. Then, through the operation of a solenoid valve, the material in the anaerobic tank flows into the facultative anaerobic tank via a conveying pipe, which is the second stage. The second stage uses perforated pipe aeration to provide an appropriate amount of oxygen to promote further degradation of intermediate metabolites. Then, through the operation of two solenoid valves, the material in the facultative anaerobic tank flows into the aerobic tank via two conveying pipes, which is the third stage. The third stage uses high-intensity aeration to maintain a high concentration of active microorganisms, completing the final process. The organic matter mineralization process involves adding specific biological enzymes and adsorbents at each reaction stage. During addition, a pump operates to guide the material from the biological enzyme tank and adsorbent tank into the anaerobic, facultative, and aerobic tanks via a feed pipe. After addition, a drive motor operates, using the transmission characteristics of the first and second conveyor belts to rotate the shaft, the first pulley, and the second pulley, thereby accelerating the mixing efficiency of the stirring rod. The biological enzymes are used to accelerate the decomposition of recalcitrant organic matter and form stable chelates that are discharged with the sludge, effectively reducing pollutant residues. Modified zeolite or activated carbon is selected as the adsorbent to ensure adsorption efficiency while reducing secondary pollution. S2: After three stages of biodegradation, the raw materials in the aerobic tank will flow into the membrane bioreactor (MBR) through three conveying pipes via three solenoid valves. By introducing the membrane bioreactor (MBR) to replace the traditional secondary sedimentation tank for solid-liquid separation, and using microfiltration or ultrafiltration membranes with pore sizes of less than 0.5 micrometers, water and activated sludge are efficiently separated under the action of pressure difference across the membrane, while preventing the loss of microorganisms, improving system stability and shortening the remediation cycle. S3: After efficient separation by the membrane bioreactor (MBR), the raw material from the microfiltration membrane flows into the inoculum tank through four delivery pipes via four solenoid valves. In this area, to optimize the microbial community structure, compound functional bacteria such as acid-producing bacteria and nitrifying bacteria are added to the inoculum tank by opening the first box plate and adding them from the inoculum box. The pH, temperature and dissolved oxygen environmental parameters are dynamically adjusted by the controller to enhance the degradation efficiency and nutrient conversion capacity. S4: After nutrient transformation in the microbial community structure area, the raw materials in the inoculum pool will flow into the delivery pool through five delivery pipes via five solenoid valves. In the final effluent stage, the second box plate is opened and organic matter improvers such as humic acid or biochar are added to the delivery pool from the delivery box. After being mixed with the degradation products, they are made into garden waste, which significantly improves the organic matter content and nutrient balance of the fertilizer and promotes plant growth. S5: Finally, place the external storage container at the bottom of the discharge pipe, and then operate the six solenoid valves to discharge the raw materials in the feeding pool into the external storage container through the discharge pipe. The above technical solution combines multi-stage biodegradation with membrane separation technology to achieve efficient decomposition of complex organic matter in industrial solid waste. By optimizing the microbial community and adding organic matter improvers, the organic matter content and nutrient balance of fertilizers are significantly improved, promoting healthy plant growth and meeting users' dual needs for high nutrition and harmless treatment.

[0006] Furthermore, it includes a support plate, an anaerobic tank, an anaerobic tank, an aerobic tank, a stirring mechanism, a membrane bioreactor, a microbial incubator, and a feeding tank. The top of the support plate is fixedly connected to the anaerobic tank, the anaerobic tank, and the aerobic tank. The sides of the anaerobic tank, the anaerobic tank, and the aerobic tank are all fixedly connected to a bio-enzyme box and an adsorbent box. The top of the bio-enzyme box and the adsorbent box are all fixedly installed with a pump. The top of the pump is fixedly connected to a feed pipe. The anaerobic tank, the anaerobic tank, and the aerobic tank all belong to the multi-stage bioreactor area. The stirring mechanism includes a drive motor fixedly mounted on the side of the anaerobic tank via a mounting plate. Bearings are fixedly connected to both sides of the inner walls of the anaerobic tank, facultative tank, and aerobic tank. A rotating shaft is rotatably connected to each of the three sets of bearings. One end of one rotating shaft is fixedly connected to the output shaft of the drive motor. A first pulley is fixedly connected to the surface of one rotating shaft and the surface of the middle rotating shaft. A first conveyor belt is driven between the two first pulleys. A second pulley is fixedly connected to the surface of the middle rotating shaft and the surface of the other rotating shaft. A second conveyor belt is driven between the two second pulleys. A stirring rod is fixedly connected to the surface of each of the three rotating shafts. There are several stirring rods. The above technical solution utilizes a pump to pump the bio-enzyme and adsorbent through a feeding pipe. A drive motor, along with the transmission action of the first and second conveyor belts, rotates the shaft, first pulley, and second pulley, thereby mixing the raw materials, bio-enzyme, and adsorbent with the stirring rod. The membrane bioreactor is a novel water treatment technology combining a membrane separation unit and a biological treatment unit.

[0007] Furthermore, a membrane bioreactor is fixedly connected to the top of the support plate, and a microfiltration membrane is installed inside the membrane bioreactor; Through the above technical solution, by setting up a membrane bioreactor, membrane modules can replace the secondary sedimentation tank at the end of traditional biological treatment technology. Through the efficient retention of the membrane, activated sludge and macromolecular organic matter are retained in the bioreactor, achieving complete separation of hydraulic retention time (HRT) and sludge age (SRT). This allows the reactor to maintain a high concentration of activated sludge, thereby increasing the organic load of biological treatment. Microfiltration membranes are thin films with functions such as separation, filtration, and impurity removal. By setting up microfiltration membranes, particles between 0.1 and 1 micrometer can be retained, while macromolecular organic matter and dissolved solids (inorganic salts) can pass through. However, suspended solids, bacteria, and high molecular weight colloids will be retained.

[0008] Furthermore, a microbial inoculum pool is fixedly connected to the top of the support plate, a controller is fixedly installed on the side of the microbial inoculum pool, a microbial inoculum box is fixedly connected to the top of the microbial inoculum pool, and a first box plate is movably connected to the side of the microbial inoculum box via a hinge. The microbial inoculum pool, the controller, the microbial inoculum box and the first box plate all belong to the microbial community structure area. The above technical solutions provide storage space for raw materials by setting up a microbial pool, dynamically regulate environmental parameters such as pH, temperature, and dissolved oxygen by setting up a controller, store acid-producing bacteria and nitrifying bacteria by setting up a microbial box, and shield the microorganisms in the microbial box by setting up a first box plate.

[0009] Furthermore, a dispensing pool is fixedly connected to the top of the support plate, a dispensing box is fixedly connected to the top of the dispensing pool, and a second box plate is movably connected to the side of the dispensing box via a hinge. The dispensing pool, the dispensing box, and the second box plate all belong to the water discharge stage area. The above technical solution provides storage space for raw materials by setting up a feeding pool, stores organic matter modifiers (such as humic acid or biochar) by setting up a feeding box, and shields the organic matter modifiers by setting up a second box plate.

[0010] Furthermore, the anaerobic tank, facultative anaerobic tank, aerobic tank, membrane bioreactor and inoculum tank are all fixedly connected to the side of the tank, and the feed tank is fixedly connected to the side of the feed tank. Solenoid valves are fixedly installed on the surface of the conveying pipe and the surface of the feed pipe. The above technical solution, by setting up conveying pipes and discharge pipes, can facilitate the conveying effect of specifying the flow direction, and by setting up solenoid valves, can control the flow rate.

[0011] Furthermore, an injection tube is fixedly connected to the top of both the bio-enzyme box and the adsorbent box, and a sealing plug is snapped into the inside of the injection tube; The above technical solution enables the introduction of biological enzymes and adsorbents through the injection tube, and the sealing plug ensures the sealing of the inside of the injection tube.

[0012] Furthermore, a support column is fixedly connected to the bottom of the support plate, and there are four support columns, with a base plate fixedly connected to the bottom end of each of the four support columns; The above technical solution, by setting up support columns and a base plate, can effectively support the entire device.

[0013] Furthermore, a support base is fixedly connected to the side of the support plate, and the discharge pipe is located inside the support base; The above technical solution, by setting a support base, can achieve the effect of limiting and supporting the discharge pipe.

[0014] 3. Beneficial effects This invention provides a process for preparing garden fertilizer by utilizing microbial degradation of general industrial solid waste. It has the following beneficial effects: 1. This invention provides a process for preparing garden fertilizer by microbial degradation of general industrial solid waste. By combining multi-stage biodegradation with membrane separation technology, the complex organic matter in industrial solid waste is efficiently decomposed, ensuring that the produced garden fertilizer is safe and harmless. By optimizing the microbial community and adding organic matter modifiers, the organic matter content and nutrient balance of the fertilizer are significantly improved, promoting healthy plant growth and meeting users' dual needs for high nutrition and harmless treatment.

[0015] 2. This invention provides a process for preparing garden fertilizer by microbial degradation of general industrial solid waste. The process involves a pump that pumps the bio-enzyme and adsorbent through a feeding pipe. A drive motor, along with a first and second conveyor belt, drives a rotating shaft, a first pulley, and a second pulley to rotate, thereby mixing the raw materials, bio-enzyme, and adsorbent with a stirring rod. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall front view of the present invention; Figure 2 This is a schematic diagram of the overall side view structure of the present invention; Figure 3 This is a side view of the stirring mechanism in this invention. Figure 4 This is a schematic diagram of the overall top view structure of the present invention; Figure 5 This is a front view schematic diagram of the conveying pipeline and solenoid valve in this invention; Figure 6 This is a schematic diagram of the side cross-sectional structure of the membrane bioreactor in this invention; Figure 7 This is a schematic diagram of the overall system structure in this invention.

[0017] The components are as follows: 1. Support plate; 2. Anaerobic tank; 3. Anoxic tank; 4. Aerobic tank; 5. Stirring mechanism; 501. Drive motor; 502. Bearing; 503. Rotating shaft; 504. First pulley; 505. First conveyor belt; 506. Second pulley; 507. Second conveyor belt; 508. Stirring rod; 6. Membrane bioreactor; 7. Inoculum tank; 8. Controller; 9. Inoculum box; 10. First box plate; 11. Feeding tank; 12. Feeding box; 13. Second box plate; 14. Discharge pipe; 15. Solenoid valve; 16. Support base; 17. Bioenzyme box; 18. Adsorbent box; 19. Pump; 20. Feeding pipe; 21. Injection pipe; 22. Sealing plug; 23. Support column; 24. Base plate; 25. Conveying pipe; 26. Microfiltration membrane. Detailed Implementation

[0018] The technical solutions of the specific embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Specific implementation method 1: like Figure 7 As shown in the figure, a specific embodiment of the present invention provides a process for preparing garden fertilizer by utilizing microbial degradation of general industrial solid waste, including the following steps: S1: First, the industrial solid waste raw material to be degraded is introduced into anaerobic tank 2, which is the first stage. The first stage uses contact anaerobic tank 2, filled with high-density packing material to increase the biological treatment load and initially decompose complex organic matter. Then, through the operation of a solenoid valve 15, the raw material in anaerobic tank 2 flows into facultative tank 3 via a conveying pipe 25, which is the second stage. The second stage uses perforated pipe aeration to provide an appropriate amount of oxygen to promote further degradation of intermediate metabolites. Then, through the operation of two solenoid valves 15, the raw material in facultative tank 3 flows into aerobic tank 4 via two conveying pipes 25, which is the third stage. The third stage uses high-intensity aeration to maintain a high concentration of active microorganisms, completing the final mineralization of organic matter. Specific biological enzymes and adsorbents are added in each reaction stage. During addition, the material in the biological enzyme tank 17 and adsorbent tank 18 is introduced into the anaerobic tank 2, facultative tank 3 and aerobic tank 4 through the feed pipe 20 via the operation of the feed pump 19. After addition, the material can be driven by the drive motor 501. With the transmission characteristics of the first conveyor belt 505 and the second conveyor belt 507, the rotating shaft 503, the first pulley 504 and the second pulley 506 are rotated, thereby accelerating the mixing efficiency of the stirring rod 508. The biological enzymes are used to accelerate the decomposition of recalcitrant organic matter and form stable chelates that are discharged with the sludge, effectively reducing pollutant residues. Modified zeolite or activated carbon is selected as the adsorbent to ensure adsorption efficiency while reducing secondary pollution. S2: After three stages of biodegradation, the raw materials in the aerobic tank 4 will flow into the membrane bioreactor 6MBR through three conveying pipes 25 via three solenoid valves 15. By introducing the membrane bioreactor 6MBR to replace the traditional secondary sedimentation tank for solid-liquid separation, the microfiltration membrane 26 or ultrafiltration membrane with a pore size of less than 0.5 micrometers is used to achieve efficient separation of water and activated sludge under the action of pressure difference on both sides of the membrane, while preventing the loss of microorganisms, improving system stability and shortening the repair cycle. S3: After efficient separation by the 6MBR membrane bioreactor, the raw material at the microfiltration membrane 26 flows into the inoculum tank 7 through four delivery pipes 25 via the operation of four solenoid valves 15. In order to optimize the microbial community structure, compound functional bacteria such as acid-producing bacteria and nitrifying bacteria are added to the inoculum tank 7 by opening the first box plate 10 and adding them from the inoculum box 9. The pH, temperature and dissolved oxygen environmental parameters are dynamically regulated by the controller 8 to enhance the degradation efficiency and nutrient conversion capacity. S4: After nutrient transformation in the microbial community structure area, the raw materials in the inoculum tank 7 will flow into the delivery tank 11 through five delivery pipes 25 via the operation of five solenoid valves 15. In the final effluent stage, organic matter improvers such as humic acid or biochar are added to the delivery tank 11 from the delivery box 12 by opening the second box plate 13. After being mixed with the degradation products, they are made into garden fertilizer, which significantly improves the organic matter content and nutrient balance of the fertilizer and promotes plant growth. S5: Finally, place the external storage container at the bottom of the discharge pipe 14, and then operate the six solenoid valves 15 to discharge the raw materials in the feeding pool 11 into the external storage container through the discharge pipe 14. Through the combination of multi-stage biodegradation and membrane separation technology, the complex organic matter in industrial solid waste is efficiently decomposed, ensuring that the produced garden fertilizer is safe and harmless. By optimizing the microbial community and adding organic matter improvers, the organic matter content and nutrient balance of the fertilizer are significantly improved, promoting healthy plant growth and meeting the user's dual needs for high nutrition and harmless treatment.

[0020] according to Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, the system includes a support plate 1, an anaerobic tank 2, an anaerobic tank 3, an aerobic tank 4, a stirring mechanism 5, a membrane bioreactor 6, a microbial incubator 7, and a feeding tank 11. The top of the support plate 1 is fixedly connected to the anaerobic tank 2, the anaerobic tank 3, and the aerobic tank 4. The sides of the anaerobic tank 2, the anaerobic tank 3, and the aerobic tank 4 are all fixedly connected to a bio-enzyme tank 17 and an adsorbent tank 18. The top of the bio-enzyme tank 17 and the adsorbent tank 18 are both fixedly installed with a pump 19. The top of the pump 19 is fixedly connected to a feed pipe 20. The anaerobic tank 2, the anaerobic tank 3, and the aerobic tank 4 are all part of a multi-stage bioreactor area. The bio-enzyme and adsorbent are pumped out by the pump 19 and the feed pipe 20. The stirring mechanism 5 includes a drive motor 501 fixedly mounted on the side of the anaerobic tank 2 via a mounting plate. Bearings 502 are fixedly connected to both sides of the inner walls of the anaerobic tank 2, the facultative anaerobic tank 3, and the aerobic tank 4. A rotating shaft 503 is rotatably connected within each of the three sets of bearings 502. One end of one rotating shaft 503 is fixedly connected to the output shaft of the drive motor 501. First pulleys 504 are fixedly connected to the surface of one rotating shaft 503 and the surface of the middle rotating shaft 503. A first conveyor belt 505 drives between the two first pulleys 504. The surface of the middle rotating shaft 503... A second pulley 506 is fixedly connected to the surface of the rotating shaft 503 on the other side. A second conveyor belt 507 is connected between the two second pulleys 506. A stirring rod 508 is fixedly connected to the surface of each of the three rotating shafts 503. There are several stirring rods 508. The stirring rods 508 are driven by the drive motor 501. With the help of the transmission action of the first conveyor belt 505 and the second conveyor belt 507, the rotating shafts 503, the first pulley 504 and the second pulley 506 are driven to rotate, thereby achieving the purpose of mixing the raw materials, biological enzymes and adsorbents by the stirring rods 508.

[0021] according to Figure 1 , Figure 2 and Figure 6As shown, a membrane bioreactor 6 is fixedly connected to the top of the support plate 1. A microfiltration membrane 26 is installed inside the membrane bioreactor 6. The membrane bioreactor 6 is a novel water treatment technology combining a membrane separation unit and a biological treatment unit. By installing the membrane bioreactor 6, the membrane module can replace the secondary sedimentation tank at the end of traditional biological treatment technology. Through the efficient retention of the membrane, activated sludge and macromolecular organic matter are retained within the bioreactor, achieving complete separation of hydraulic retention time (HRT) and sludge age (SRT). This allows the reactor to maintain a high concentration of activated sludge, thereby increasing the organic load of the biological treatment. The microfiltration membrane 26 is a thin film with functions of separation, filtration, and impurity removal. By installing the microfiltration membrane 26, it can retain 0.1-1... Micron-sized particles allow the passage of large organic molecules and dissolved solids (inorganic salts), but trap suspended solids, bacteria, and high molecular weight colloids. A microbial inoculum pool 7 is fixedly connected to the top of the support plate 1, a controller 8 is fixedly installed on the side of the microbial inoculum pool 7, a microbial inoculum box 9 is fixedly connected to the top of the microbial inoculum pool 7, and a first box plate 10 is movably connected to the side of the microbial inoculum box 9 via a hinge. The microbial inoculum pool 7, controller 8, microbial inoculum box 9, and first box plate 10 all belong to the microbial community structure area. By setting up the microbial inoculum pool 7, storage space for raw materials can be provided. By setting up the controller 8, environmental parameters such as pH, temperature, and dissolved oxygen can be dynamically controlled. By setting up the microbial inoculum box 9, acid-producing bacteria and nitrifying bacteria can be stored. By setting up the first box plate 10, the bacteria in the microbial inoculum box 9 can be shielded.

[0022] according to Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a feeding tank 11 is fixedly connected to the top of the support plate 1, and a feeding box 12 is fixedly connected to the top of the feeding tank 11. A second box plate 13 is movably connected to the side of the feeding box 12 via a hinge. The feeding tank 11, the feeding box 12, and the second box plate 13 all belong to the effluent stage area. By setting up the feeding tank 11, storage space can be provided for the raw materials. By setting up the feeding box 12, organic matter amendments (such as humic acid or biochar) can be stored. By setting up the second box plate 13, organic matter amendments can be shielded. The sides of the anaerobic tank 2, the facultative tank 3, the aerobic tank 4, the membrane bioreactor 6, and the inoculum tank 7 are all fixedly connected to conveying pipes 25. The side of the feeding tank 11 is fixedly connected to the discharge pipe 14. Solenoid valves 15 are fixedly installed on the surface of the conveying pipe 25 and the surface of the discharge pipe 14. By setting up the conveying pipe 25 and the discharge pipe 14, the flow direction can be easily specified. By setting up the solenoid valve 15, the flow rate can be controlled.

[0023] according to Figure 1 and Figure 2As shown, injection tubes 21 are fixedly connected to the top of both the bio-enzyme box 17 and the adsorbent box 18. A sealing plug 22 is snapped into the inside of the injection tube 21. By setting the injection tube 21, the bio-enzyme and adsorbent can be introduced. By setting the sealing plug 22, the inside of the injection tube 21 can be sealed. Support columns 23 are fixedly connected to the bottom of the support plate 1. There are four support columns 23. The bottom ends of the four support columns 23 are fixedly connected to the bottom plate 24. By setting the support columns 23 and the bottom plate 24, the overall device can be supported. Support seats 16 are fixedly connected to the side of the support plate 1. The discharge pipe 14 is located inside the support seat 16. By setting the support seat 16, the discharge pipe 14 can be limited and supported.

[0024] Working Principle: S1: First, the industrial solid waste to be degraded is introduced into anaerobic tank 2, which is the first stage. In the first stage, contact anaerobic tank 2 is filled with high-density packing material to increase the biological treatment load and initially decompose complex organic matter. Then, through the operation of a solenoid valve 15, the raw material in anaerobic tank 2 flows into facultative tank 3 via a conveying pipe 25, which is the second stage. In the second stage, aeration using perforated pipes provides an appropriate amount of oxygen to promote further degradation of intermediate metabolites. Then, through the operation of two solenoid valves 15, the raw material in facultative tank 3 flows into aerobic tank 4 via two conveying pipes 25, which is the third stage. In the third stage, high-intensity aeration maintains a high concentration of active microorganisms, completing the final mineralization of organic matter. Specific bio-enzymes and adsorbents are added at each reaction stage. During addition, the material in the bio-enzyme tank 17 and adsorbent tank 18 is introduced into the anaerobic tank 2, facultative tank 3 and aerobic tank 4 through the feed pipe 20 via the operation of the feed pump 19. After addition, the drive motor 501 is operated, and the first conveyor belt 505 and the second conveyor belt 507 drive the rotating shaft 503, the first pulley 504 and the second pulley 506 to rotate, thereby accelerating the mixing efficiency of the stirring rod 508. (The bio-enzymes are used to accelerate the decomposition of recalcitrant organic matter and form stable chelates that are discharged with the sludge, effectively reducing pollutant residues. Modified zeolite or activated carbon is selected as the adsorbent to ensure adsorption efficiency while reducing secondary pollution.) S2: After three stages of biodegradation, the raw materials in the aerobic tank 4 will flow into the membrane bioreactor 6 (MBR) through three conveying pipes 25 via three solenoid valves 15. By introducing the membrane bioreactor 6 (MBR) to replace the traditional secondary sedimentation tank for solid-liquid separation, the water and activated sludge are efficiently separated under the action of pressure difference on both sides of the membrane using microfiltration membrane 26 or ultrafiltration membrane with a pore size of less than 0.4 micrometers. At the same time, it prevents the loss of microorganisms, improves system stability and shortens the repair cycle. S3: After efficient separation by the membrane bioreactor 6 (MBR), the raw material at the microfiltration membrane 26 flows into the inoculum tank 7 through four delivery pipes 25 via the operation of four solenoid valves 15. In order to optimize the microbial community structure, compound functional bacteria (such as acid-producing bacteria and nitrifying bacteria) are added to the inoculum tank 7 by opening the first box plate 10 and adding them from the inoculum box 9. The pH, temperature and dissolved oxygen environmental parameters are dynamically regulated by the controller 8 to enhance the degradation efficiency and nutrient conversion capacity. S4: After nutrient transformation in the microbial community structure area, the raw materials in the inoculum tank 7 will flow into the delivery tank 11 through five delivery pipes 25 via the operation of five solenoid valves 15. In the final effluent stage, organic matter improver (such as humic acid or biochar) is added to the delivery tank 11 from the delivery box 12 by opening the second box plate 13. After mixing with the degradation products, it is made into garden fertilizer, which significantly improves the organic matter content and nutrient balance of the fertilizer and promotes plant growth. S5: Finally, place the external storage container at the bottom of the discharge pipe 14, and then operate the six solenoid valves 15 to discharge the raw materials in the feeding pool 11 into the external storage container through the discharge pipe 14.

[0025] Although specific 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 specific 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 process for preparing garden fertilizer by utilizing microbial degradation of general industrial solid waste, characterized in that, Includes the following steps: S1: First, the industrial solid waste raw material to be degraded is introduced into the anaerobic tank (2), which is the first stage. The first stage uses the contact anaerobic tank (2) to initially decompose complex organic matter. Then, through the operation of a solenoid valve (15), the raw material in the anaerobic tank (2) will flow into the facultative tank (3) through a conveying pipe (25), which is the second stage. The second stage uses perforated pipe aeration to provide an appropriate amount of oxygen to promote the further degradation of intermediate metabolites. Then, through the operation of two solenoid valves (15), the raw material in the facultative tank (3) will flow into the aerobic tank (4) through two conveying pipes (25), which is the third stage, completing the final degradation. In the process of mineralization, biological enzymes and adsorbents are added at each reaction stage. When adding, the material in the biological enzyme tank (17) and adsorbent tank (18) is introduced into the anaerobic tank (2), facultative tank (3) and aerobic tank (4) through the feeding pipe (20) by the operation of the pump (19). After the addition is completed, the material is driven by the drive motor (501) through the transmission characteristics of the first conveyor belt (505) and the second conveyor belt (507), which drives the rotating shaft (503), the first pulley (504) and the second pulley (506) to rotate, thereby accelerating the mixing efficiency of the stirring rod (508). The adsorbent is modified zeolite or activated carbon. S2: After three stages of biodegradation, the raw materials in the aerobic tank (4) will flow into the membrane bioreactor (6) through three conveying pipes (25) via three solenoid valves (15). By introducing the membrane bioreactor (6) to replace the traditional secondary sedimentation tank for solid-liquid separation, the separation of water and activated sludge is achieved by using microfiltration membranes (26) or ultrafiltration membranes with pore sizes below 0.4 micrometers under the action of pressure difference on both sides of the membrane. S3: After separation by the membrane bioreactor (6), the raw material at the microfiltration membrane (26) will flow into the inoculum pool (7) through the four solenoid valves (15) and the four delivery pipes (25). The composite functional bacteria are acid-producing bacteria and nitrifying bacteria. The pH, temperature and dissolved oxygen environmental parameters are dynamically adjusted by the controller (8). S4: Through the operation of five solenoid valves (15), the raw materials in the inoculum pool (7) will flow into the delivery pool (11) through five delivery pipes (25). In the final water discharge stage, the second box plate (13) is opened and an organic matter improver is added to the delivery pool (11) from the delivery box (12). The organic matter improver is humic acid or biochar, which is mixed with the degradation products to make garden fertilizer. S5: Finally, place the external storage container at the bottom of the discharge pipe (14), and then operate the six solenoid valves (15) to discharge the raw materials in the feeding pool (11) into the external storage container through the discharge pipe (14).

2. The process for preparing garden fertilizer using microbial degradation of general industrial solid waste according to claim 1, characterized in that: It also includes a structure that enables the process to be implemented. The structure includes a support plate (1), an anaerobic tank (2), an anaerobic tank (3), an aerobic tank (4), a stirring mechanism (5), a membrane bioreactor (6), a microbial incubator (7), and a feeding tank (11). The top of the support plate (1) is fixedly connected to the anaerobic tank (2), the anaerobic tank (3), and the aerobic tank (4). The sides of the anaerobic tank (2), the anaerobic tank (3), and the aerobic tank (4) are all fixedly connected to a bio-enzyme box (17) and an adsorbent box (18). The top of the bio-enzyme box (17) and the adsorbent box (18) are all fixedly installed with a pump (19). The top of the pump (19) is fixedly connected to a feed pipe (20). The anaerobic tank (2), the anaerobic tank (3), and the aerobic tank (4) all belong to the multi-stage bioreactor area. The stirring mechanism (5) includes a drive motor (501) fixedly mounted on the side of the anaerobic tank (2) via a mounting plate. Bearings (502) are fixedly connected to both sides of the inner walls of the anaerobic tank (2), the facultative anaerobic tank (3), and the aerobic tank (4). A rotating shaft (503) is rotatably connected to each of the three sets of bearings (502). One end of one rotating shaft (503) is fixedly connected to the output shaft of the drive motor (501). A first pulley (504) is fixedly connected to the surface of one rotating shaft (503) and the surface of the middle rotating shaft (503). A first conveyor belt (505) is connected between the two first pulleys (504). A second pulley (506) is fixedly connected to the surface of the middle rotating shaft (503) and the surface of the other rotating shaft (503). A second conveyor belt (507) is connected between the two second pulleys (506). A stirring rod (508) is fixedly connected to the surface of each of the three rotating shafts (503). There are several stirring rods (508).

3. The process for preparing garden fertilizer using microbial degradation of general industrial solid waste according to claim 2, characterized in that: The top of the support plate (1) is fixedly connected to a membrane bioreactor (6), and a microfiltration membrane (26) is provided inside the membrane bioreactor (6).

4. The process for preparing garden fertilizer by utilizing microbial degradation of general industrial solid waste according to claim 2, characterized in that: The top of the support plate (1) is fixedly connected to a microbial inoculum pool (7), and a controller (8) is fixedly installed on the side of the microbial inoculum pool (7). The top of the microbial inoculum pool (7) is fixedly connected to a microbial inoculum box (9), and the side of the microbial inoculum box (9) is movably connected to a first box plate (10) via a hinge. The microbial inoculum pool (7), controller (8), microbial inoculum box (9) and first box plate (10) all belong to the microbial community structure area.

5. The process for preparing garden fertilizer by utilizing microbial degradation of general industrial solid waste according to claim 2, characterized in that: The top of the support plate (1) is fixedly connected to the injection pool (11), the top of the injection pool (11) is fixedly connected to the injection box (12), and the side of the injection box (12) is movably connected to the second box plate (13) via a hinge. The injection pool (11), the injection box (12) and the second box plate (13) all belong to the water discharge stage area.

6. The process for preparing garden fertilizer by utilizing microbial degradation of general industrial solid waste according to claim 2, characterized in that: The anaerobic tank (2), facultative anaerobic tank (3), aerobic tank (4), membrane bioreactor (6) and bacterial culture tank (7) are all fixedly connected to the sides of the conveying pipe (25), the side of the feeding tank (11) is fixedly connected to the discharge pipe (14), and the surface of the conveying pipe (25) and the surface of the discharge pipe (14) are both fixedly installed with solenoid valves (15).

7. The process for preparing garden fertilizer by utilizing microbial degradation of general industrial solid waste according to claim 2, characterized in that: The top of both the bio-enzyme box (17) and the adsorbent box (18) are fixedly connected to an injection tube (21), and a sealing plug (22) is snapped into the inside of the injection tube (21).

8. The process for preparing garden fertilizer by utilizing microbial degradation of general industrial solid waste according to claim 2, characterized in that: The bottom of the support plate (1) is fixedly connected to a support column (23), and there are four support columns (23). The bottom ends of the four support columns (23) are all fixedly connected to a base plate (24).

9. The process for preparing garden fertilizer by utilizing microbial degradation of general industrial solid waste according to claim 6, characterized in that: The side of the support plate (1) is fixedly connected to a support base (16), and the discharge pipe (14) is located inside the support base (16).

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