A mixing and ventilation-linked reciprocating aerobic composting device and its usage method

Abstract

This invention discloses a reciprocating aerobic composting device with integrated stirring and ventilation, and its usage method, belonging to the field of aerobic fermentation of organic solid waste. The device includes a main body and an electrical control system. A blower pump is connected to the upper and lower air inlets via an inlet solenoid valve, and an exhaust pump is connected to the lower air inlet and lower outlet via an outlet solenoid valve. A stirring pump connects the stirring shaft and the stirring paddle via a speed-changing coupling, enabling alternating stirring and periodic reciprocating reversal. A temperature sensor in the tank allows for intelligent temperature monitoring. A hydraulic lifter connects the arc-shaped cover of the main body to the tank, facilitating hydraulic cover-tank separation for easy maintenance. The entire process is operated via a visual platform of the electrical control system. The tank is entirely covered with insulation cotton and mounted on a mobile frame for easy disassembly and relocation. This invention optimizes the heat and mass transfer process of the compost pile, improves the pile's looseness and permeability, and accelerates the bioconversion efficiency of compost.

Description

Technical Field

[0001] This invention belongs to the field of aerobic fermentation of organic solid waste, specifically relating to a stirring and ventilation linkage reciprocating aerobic composting device and its usage method. Background Technology

[0002] Aerobic composting technology is based on the degradation and condensation of aerobic microorganisms to stabilize and humify organic waste, producing high-quality fertilizer for agricultural use, and has a promising future.

[0003] Current composting devices used in laboratory research generally suffer from low equipment integration, small processing scale, difficulty in control, and difficulty in relocation and disassembly. During experiments, data such as temperature and oxygen concentration in existing composting experimental devices are often collected manually, which is not only cumbersome but also makes continuous monitoring difficult. On the other hand, the stirring and aeration system is difficult to control. Traditional unidirectional ventilation and stirring cannot achieve real-time control of the compost pile, resulting in uneven distribution of temperature and oxygen concentration inside the pile. When aeration is carried out, the compacted pile makes it difficult for the introduced gas to penetrate the pile, thus prolonging the composting cycle and reducing the bioconversion efficiency of compost.

[0004] Therefore, there is an urgent need for a pilot-scale aerobic composting device that can accelerate composting efficiency and has a high degree of integration. Summary of the Invention

[0005] The purpose of this invention is to utilize an electronic control system to control the composting ventilation pump and stirring pump, achieving coordinated ventilation and stirring. Simultaneously, at fixed intervals, the ventilation and stirring directions are reversed to regulate the material in the compost pile, maintaining a loose structure and ensuring an aerobic environment. An online monitoring system is also included to monitor and record temperature data online. Overall, this invention achieves an integrated and highly efficient composting experimental reactor.

[0006] The specific technical solution adopted in this invention is as follows:

[0007] In a first aspect, the present invention provides a stirring and ventilation-linked reciprocating aerobic composting device, comprising a device body and an electrical control system. The device body includes a flange, a top cover, and a tank body, with the flange disposed between the top cover and the tank body, thus forming a cavity for storing compost. The top cover has a feed inlet and a water inlet, and the tank body has a discharge outlet on its bottom side.

[0008] An agitator shaft is axially installed inside the tank, consisting of an upper agitator shaft and a lower agitator shaft. One end of the upper agitator shaft extends from the top cover and is connected to the agitator pump via a speed-changing coupling that controls the speed of the agitator shaft. The other end is connected to the lower agitator shaft via a socket joint. Multiple agitator blades are installed on the lower agitator shaft.

[0009] The tank has an upper air outlet and an upper air inlet on the top of its side wall. A leachate separator for collecting leachate is located at the bottom of the tank's inner side. A leachate outlet is located on the side wall below the leachate separator. A lower air inlet and a lower air outlet are also located at the bottom of the tank's side wall, with their heights positioned between the leachate separator and the leachate outlet.

[0010] The upper and lower air inlets are connected to the blower pump via inlet solenoid valves. The upper and lower air outlets are connected to the suction pump via outlet solenoid valves. The electrical control system controls the blower pump, suction pump, inlet solenoid valves, outlet solenoid valves, and agitator pump.

[0011] Multiple sampling ports are provided on the side wall of the tank. An inspection port is located below the leachate compartment. The tank is also equipped with a temperature sensor for measuring the composting temperature, and the temperature sensor is connected to the electrical control system.

[0012] Preferably, the top cover and the tank body are connected by a hydraulic lifter to enable the opening and closing of the top cover.

[0013] Preferably, the height-to-diameter ratio of the aforementioned tank body is in the range of 0.8-1.5.

[0014] Preferably, the top cover is an arc-shaped cover. An insulation layer is installed on the outside of the tank. The insulation layer is made of polystyrene foam and has a thickness of not less than 5 cm.

[0015] Preferably, a portable mobile frame is provided at the bottom of the tank. A locking device is provided on the mobile frame.

[0016] Preferably, the ratio of the distance between the leachate separator and the bottom of the tank to the height of the tank is in the range of 0.1-0.2.

[0017] Preferably, both the blower and the vacuum pump mentioned above are variable frequency pumps.

[0018] Preferably, the diameter of the sampling port is not less than 5cm. The size of the inspection port is not less than 15cm × 8cm.

[0019] Secondly, the present invention provides a method for composting using the apparatus described in the first aspect, as follows:

[0020] When the device is started, riboflavin is added as a biostimulant according to the compost mass ratio, and humic matter is added as a filler. When the inlet and outlet solenoid valves are energized by the electrical control system, a gas passage is formed between the upper inlet and lower outlet; when de-energized, the lower inlet and upper outlet form a separate gas passage, achieving bidirectional ventilation during the composting process. Simultaneously, the electrical control system controls the mixing pump to achieve mixing in different directions.

[0021] Preferably, the biostimulant riboflavin has a mass ratio of 0.01% to 0.05%, and the filler humic acid has a mass ratio of 5% to 10%. The ventilation rate during operation is set at 0.1 to 0.6 L / min. -1 kg -1 The material and the alternating frequency of the stirring paddle are 5 to 30 minutes per cycle.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] (1) The device provided by the present invention uses two sets of air inlets and outlets, and controls the opening and closing of the air inlet solenoid valve and the outlet solenoid valve to achieve bidirectional ventilation; thus, the temperature and oxygen concentration inside the pile are evenly distributed, which solves the problem that the dense pile makes it difficult for the gas to penetrate the pile during ventilation, reduces the composting cycle, and improves the bioconversion efficiency of compost.

[0024] (2) The composting method provided by the present invention uses riboflavin as a biostimulant and humic substances as filler. Riboflavin is mainly used to participate in the energy metabolism process of microorganisms, participate in the dehydrogenation reaction of the synthesis process of adenosine triphosphate, transfer hydrogen ions and electrons from the substrate to cytochromes or coenzymes, and promote the production of ATP. The addition of riboflavin is mainly used to improve the activity of microorganisms and accelerate the metabolic heat production process of microorganisms. The addition of humic substances can improve the electron transfer capacity of the entire composting system. Through experiments, it can be seen that the compost can reach 70% of the harmlessness standard within 7 days, and the proportion of humic acid in the product reaches 0.45%. Attached Figure Description

[0025] Figure 1 This is a front view of the aerobic composting device with stirring and ventilation linkage provided by the present invention.

[0026] Figure 2 Left view of the aerobic composting device with stirring and ventilation linkage provided by the present invention.

[0027] Figure 3 This is a schematic diagram of the top cover opening of the device provided by the present invention;

[0028] In the diagram: 1. Agitator pump; 2. Speed ​​coupling; 3. Water inlet; 4. Upper air outlet; 5. Insulation layer; 6. Agitator paddle; 7. Discharge port; 8. Upper air inlet; 9. Moving frame; 10. Feed inlet; 11. Sampling port; 12. Leachate separator; 13. Leachate discharge outlet; 14. Temperature sensor; 15. Socket; 16. Electrical control system; 17. Blower pump; 18. Air outlet solenoid valve; 19. Air extraction pump; 20. Hydraulic lifter; 21. Agitator shaft; 211 Upper agitator shaft; 212 Lower agitator shaft; 22. Flange; 23. Top cover; 24. Tank body; 25. Inspection port; 26. Lower air inlet; 27. Lower air outlet; 28. Air inlet solenoid valve. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1

[0031] This embodiment provides a stirring and ventilation-linked reciprocating aerobic composting device and method, as detailed below:

[0032] (1) Device setup

[0033] like Figure 1 As shown, the aerobic composting device with stirring and ventilation linkage includes a main body and an electrical control system 16. The main body includes a flange 22, a top cover 23, and a tank 24. The top cover 23 and the tank 24 are connected by a hydraulic lifter 20 to open and close the top cover 23, which is an arc-shaped cover. The flange 22 is located between the top cover 23 and the tank 24, so that the main body of the device forms a cavity for storing compost. The top cover 23 has a feed inlet 10 and a water inlet 3, and the tank 24 has a discharge outlet 7 on its bottom side.

[0034] The tank body 24 is equipped with an insulation layer 5, which is made of polystyrene foam and has a thickness of not less than 5cm. A portable mobile frame 9 is provided at the bottom of the tank body 24, and a locking device is provided on the mobile frame 9.

[0035] An agitator shaft 21 is axially arranged inside the tank body 24. The agitator shaft 21 is divided into an upper agitator shaft 211 and a lower agitator shaft 212. One end of the upper agitator shaft 211 extends from the top cover 23 and is connected to the agitator pump 1. A speed-changing coupling 2 is provided between the upper agitator shaft 211 and the agitator pump 1. The speed-changing coupling 2 is used to control the agitator shaft 21 and realize the agitation speed change. The other end of the upper agitator shaft 211 is connected to the lower agitator shaft 212 through a socket 15. Multiple agitator blades 6 are provided on the lower agitator shaft 212, and the lower agitator shaft 212 and the agitator blades 6 are connected by nuts. The agitator blades 6 adopt a 3-layer paddle blade design, with 3 blades in each layer, for a total of 6 agitator blades arranged in a fan shape.

[0036] like Figure 2As shown, the hydraulic lift 20 opens in the forward direction, the top cover 23 separates from the tank 24, and the speed change coupling 2 separates from the lower stirring shaft 212 at the socket 15. The stirring pump 1, speed change coupling 2, and top cover 23 are rotated to one side, allowing access to the tank 24 for maintenance. After maintenance, the stirring pump 1, speed change coupling 2, and top cover 23 are rotated back to their original positions, the hydraulic lift 20 opens in the reverse direction, and the top cover 23 connects to the tank 24, secured by flange 22. Furthermore, the speed change coupling 2 connects to the upper stirring shaft 211 and the lower stirring shaft 212 through the socket 15. After starting the stirring pump 1, the stirring shaft 21 rotates normally.

[0037] The tank body 24 has an upper air outlet 4 and an upper air inlet 8 on the top of its side wall; a leachate separator 12 for collecting leachate is provided on the bottom inner side of the tank body 24, and the ratio of the height of the leachate separator 12 to the bottom to the height of the tank body 24 is 0.8-1.5; a leachate outlet 13 is provided on the side wall of the tank body 24 below the leachate separator 12. In this embodiment, the leachate separator 12 is provided 15cm from the bottom of the tank body 24. The leachate separator 12 is porous with a pore diameter of no more than 10mm. The leachate outlet 13 is opened periodically to collect leachate. A reflux device can also be provided at the rear end to connect to the water inlet 3.

[0038] The bottom of the side wall of the tank body 24 is also provided with a lower air inlet 26 and a lower air outlet 27, and the height of the lower air inlet 26 and the lower air outlet 27 is located between the leachate partition 12 and the leachate discharge outlet 13.

[0039] The upper air inlet 8 and lower air inlet 26 are connected to the blower pump 17 via the inlet solenoid valve 28; the upper air outlet 4 and lower air outlet 27 are connected to the vacuum pump 19 via the outlet solenoid valve 18; the electronic control system 16 controls the blower pump 17, the vacuum pump 19, the inlet solenoid valve 28, the outlet solenoid valve 18, and the agitator pump 1. The agitator pump 1 and the speed-changing coupling 2 are controlled by the electronic control system 16. The speed of the agitator pump 1 is adjustable, and the direction of the agitator pump 1 is controlled by the solenoid valve. When the solenoid valve is energized, the agitator 6 rotates clockwise; when the solenoid valve is de-energized, the agitator 6 rotates counterclockwise. The agitation interval and speed can both be adjusted by the electronic control system 16.

[0040] Both the blower pump 17 and the suction pump 19 are variable frequency pumps, operating at the same power and with the same air volume, and opening and closing simultaneously to ensure that there is no negative pressure inside the tank 24. When the inlet solenoid valve 28 and the outlet solenoid valve 18 are energized simultaneously, the upper inlet port 8 and the lower outlet port 27 form a passage; when they are de-energized simultaneously, the lower inlet port 26 and the upper outlet port 4 form a passage.

[0041] Three sampling ports 11 are provided in the middle of the side wall of the tank body 24, and an inspection port 25 is provided in the side wall of the tank body 24 below the leachate partition 12 for periodic inspection of whether sludge has accumulated on the bottom. The inspection port 25 should be cleaned in a timely manner to prevent blockage of the lower air inlet 26 and the lower air outlet 27. For convenient sampling, the diameter of the sampling ports 11 is not less than 5 cm, and the size of the inspection port 25 is not less than 15 cm × 8 cm.

[0042] The tank 24 is also equipped with a temperature sensor 14 for measuring the compost temperature, and the temperature sensor 14 is connected to the electrical control system 16. To prevent the agitator 6 from scraping against the temperature sensor during agitation, the length of the temperature sensor in this embodiment is set to be less than 5 cm. The temperature sensor is controlled by the electrical control system 16, and the daily changes in the compost temperature are detected on the visualization platform of the electrical control system 16.

[0043] In this embodiment, the height-to-diameter ratio of the tank 24 is in the range of 1.2. The volume of the composting reaction zone inside the tank 24 is 0.61 m³. 3 The diameter of the reaction chamber is set at 850mm and the height at 1080mm. The height of the upper and lower air chambers in the composting reaction chamber is 100mm (the lower air chamber is the space below the leachate partition), and the overall height is 1160mm.

[0044] (2) Composting method

[0045] Open the discharge port 7 and the mixing pump 1, and close the blower pump 17 and the vacuum pump 19. Under the radial action of the mixing paddle 6, the well-rotted material is carried out. After the discharge is completed, close the discharge port 7, and then start the feeding operation. Open the feed port 10 and add an equal amount of fresh material into the tank 24. After the feeding is completed, close the feed port 10. The initial feed is 200 kg of kitchen waste, and the system has been running for a total of 15 days.

[0046] When the device is started, riboflavin is added as a biostimulant according to the compost mass ratio, and humus is added as a filler material. When the inlet solenoid valve 28 and outlet solenoid valve 18 are energized by the electrical control system 16, the upper air inlet 8 and the lower air outlet 27 form a gas passage. When the power is off, the lower air inlet 26 and the upper air outlet 4 form a gas passage, realizing bidirectional ventilation in the composting process. At the same time, the electrical control system 16 controls the stirring pump 1 to realize the stirring of the stirring paddle 6 in different directions.

[0047] The stirring speed was set to 20 r / min. Riboflavin was added as a biostimulant at a mass ratio of 0.01% of the compost, and humus was added as a filler at a mass ratio of 10%. The ventilation rate during operation was set to 0.1 L / min. -1 ·kg -1 The material is exchanged and redirected at a frequency of 30 min / time. The stack in Example 1 is designated as stack B1.

[0048] Example 2

[0049] This embodiment provides a stirring and ventilation-linked reciprocating aerobic composting device and method, as detailed below:

[0050] (1) The ventilation-linked reciprocating aerobic composting device used in this embodiment is specifically configured in the same way as in embodiment 1.

[0051] (2) Composting method

[0052] Open the discharge port 7 and the mixing pump 1, and close the blower pump 17 and the vacuum pump 19. Under the radial action of the mixing paddle 6, the well-rotted material is carried out. After the discharge is completed, close the discharge port 7, and then start the feeding operation. Open the feed port 10 and add an equal amount of fresh material into the tank 24. After the feeding is completed, close the feed port 10. The initial feed was 200 kg of kitchen waste, and the system operated for a total of 28 days.

[0053] When the device is started, riboflavin is added as a biostimulant according to the compost mass ratio, and humus is added as a filler material. When the inlet solenoid valve 28 and outlet solenoid valve 18 are energized by the electrical control system 16, the upper air inlet 8 and the lower air outlet 27 form a gas passage. When the power is off, the lower air inlet 26 and the upper air outlet 4 form a gas passage, realizing bidirectional ventilation in the composting process. At the same time, the electrical control system 16 controls the stirring pump 1 to realize the stirring of the stirring paddle 6 in different directions.

[0054] The stirring speed was set to 20 r / min. Riboflavin was added as a biostimulant at a mass ratio of 0.01% of the compost, and humic matter was added as a filler at a mass ratio of 10%. In this embodiment, different operating ventilation rates were used during the composting process. The ventilation rate was set to 0.1 L·min. -1 ·kg -1 Material, 0.4 L·min -1 ·kg -1 Materials and 0.6 L·min -1 ·kg -1 The materials are designated as piles C1, C2, and C3, and the alternation frequency is 30 min / time.

[0055] The results showed that the high-temperature period of the C1 compost pile was maintained for 23.53% and 75.00% longer than the other two groups, respectively, and the cumulative ammonia nitrogen emissions were reduced by 18.33% compared with C2, thus enhancing the metabolism of carbohydrates, amino acids, and lipids during the high-temperature period of composting.

[0056] Comparative Example 1

[0057] This comparative example, compared to Example 1, provides a stirring-ventilation linked reciprocating aerobic composting device and a composting method without riboflavin, as detailed below:

[0058] (1) The ventilation-linked reciprocating aerobic composting device used in this comparative example is set up in the same way as in Example 1.

[0059] (2) Composting method

[0060] Open the discharge port 7 and the mixing pump 1, and close the blower pump 17 and the vacuum pump 19. Under the radial action of the mixing paddle 6, the well-rotted material is carried out. After the discharge is completed, close the discharge port 7, and then start the feeding operation. Open the feed port 10 and add an equal amount of fresh material into the tank 24. After the feeding is completed, close the feed port 10. The initial feed is 200 kg of kitchen waste, and the system has been running for a total of 15 days.

[0061] When the device is started, humus is added as filler material according to the compost mass ratio. When the inlet solenoid valve 28 and outlet solenoid valve 18 are energized by the electrical control system 16, the upper air inlet 8 and the lower air outlet 27 form a gas passage. When the power is off, the lower air inlet 26 and the upper air outlet 4 form a gas passage, realizing bidirectional ventilation in the composting process. At the same time, the electrical control system 16 controls the stirring pump 1 to realize the stirring of the stirring paddle 6 in different directions.

[0062] Set the stirring speed to 20 r / min, add deionized water at 0.01% of the compost mass ratio to replace the biostimulant, and add humus at 10% of the mass ratio as a filler. Set the ventilation rate to 0.1 L·min during operation. -1 ·kg -1 The material is exchanged and redirected at a frequency of 30 min / time. The pile in Comparative Example 1 is designated as pile B2.

[0063] Comparative Example 2

[0064] This comparative example, relative to Example 1, provides a conventional one-way ventilation device and composting method, as detailed below:

[0065] (1) This comparative example uses a traditional one-way ventilation device. Compared with the device in Example 1, the device in this comparative example has only one air inlet and one air outlet. Therefore, this device can only achieve one-way ventilation.

[0066] (2) Composting method

[0067] Three batches of food waste were initially fed with 200 kg of each and ran for a total of 15 days. The mixing speed was set at 20 r / min. Riboflavin was added as a biostimulant at a mass ratio of 0.01% of the compost, and humus was added as a filler at a mass ratio of 10%. The ventilation rate was set at 0.1 L / min during operation. -1 ·kg -1 The material is exchanged and redirected at a frequency of 30 min / time. The pile in Comparative Example 2 is designated as pile B3.

[0068] The results showed that the B1 pile entered the high-temperature period (temperature > 50℃) within 12 hours and maintained it at around 60℃ for 7 days, which was 16% and 27% longer than that of B2 and B3, respectively. According to the standard "Organic Fertilizer" (NY / T525-2021), the seed germination rate of the harmless index increased to over 70% within 7 days, while the other two groups did not reach the 70% harmless standard within 7 days. The temperature difference at different heights of the B1 pile was less than 5℃, and the oxygen concentration gradient was less than 5%, which was 10% and 26% lower than that of the other two groups, respectively. The humic acid content of the final product of B1 was 26% and 33% higher than that of B2 and B3, respectively.

[0069] This invention describes a reciprocating aerobic composting device and method with integrated stirring and ventilation, which enables the device to enter a high-temperature period quickly and prolong that period. The composting method provides a 70% harmlessness standard for the compost pile within 7 days. Furthermore, the bidirectional ventilation provided by this invention reduces temperature differences and oxygen concentration gradients at different heights of the compost pile, optimizes heat and mass transfer processes, improves pile looseness and permeability, and accelerates compost bioconversion efficiency.

Claims

1. A method for composting using a stirring and ventilation-linked reciprocating aerobic composting device, characterized in that, The stirring and ventilation linkage reciprocating aerobic composting device includes a flange (22), a top cover (23), and a tank (24). The flange (22) is located between the top cover (23) and the tank (24), so that the main body of the device forms a cavity for storing compost. The top cover (23) is provided with a feed inlet (10) and a water inlet (3), and the tank (24) is provided with a discharge outlet (7) on the bottom side. An agitator shaft (21) is axially arranged inside the tank (24). The agitator shaft (21) is divided into an upper agitator shaft (211) and a lower agitator shaft (212). One end of the upper agitator shaft (211) extends from the top cover (23) and is connected to the agitator pump (1) through a speed-changing coupling (2) that controls the speed of the agitator shaft (21). The other end is connected to the lower agitator shaft (212) through a socket (15). Multiple agitator blades (6) are arranged on the lower agitator shaft (212). The tank (24) has an upper air outlet (4) and an upper air inlet (8) on the top of its side wall; the tank (24) has a leachate separator (12) for collecting leachate on the bottom of its inner side; the tank (24) has a leachate outlet (13) at a position on its side wall below the leachate separator (12); the tank (24) also has a lower air inlet (26) and a lower air outlet (27) at the bottom of its side wall, and the lower air inlet (26) and the lower air outlet (27) are located between the leachate separator (12) and the leachate outlet (13); The upper air inlet (8) and the lower air inlet (26) are connected to the blower pump (17) through the air inlet solenoid valve (28); the upper air outlet (4) and the lower air outlet (27) are connected to the vacuum pump (19) through the air outlet solenoid valve (18); the electronic control system (16) controls the blower pump (17), the vacuum pump (19), the air inlet solenoid valve (28), the air outlet solenoid valve (18), and the stirring pump (1); Multiple sampling ports (11) are provided on the side wall of the tank (24); an inspection port (25) is provided below the leachate partition (12); a temperature sensor (14) for measuring the compost temperature is also provided inside the tank (24), and the temperature sensor (14) is connected to the electrical control system (16); The specific composting method is as follows: When the device is started, riboflavin is added as a biostimulant according to the compost mass ratio, and humus is added as a filler material. When the solenoid valve (28) at the air inlet end and the solenoid valve (18) at the air outlet end are energized by the electrical control system (16), the upper air inlet (8) and the lower air outlet (27) form a gas passage. When the power is off, the lower air inlet (26) and the upper air outlet (4) form a gas passage, realizing bidirectional ventilation in the composting process. At the same time, the electrical control system (16) controls the stirring pump (1) to realize the stirring of the stirring paddle (6) in different directions.

2. The method for composting using a stirring and ventilation-linked reciprocating aerobic composting device according to claim 1, characterized in that, The top cover (23) and the tank body (24) are connected by a hydraulic lifter (20) to realize the opening and closing of the top cover (23).

3. The method for composting using a stirring and ventilation-linked reciprocating aerobic composting device according to claim 1, characterized in that, The height-to-diameter ratio of the tank body (24) ranges from 0.8 to 1.

5.

4. The method for composting using a stirring and ventilation-linked reciprocating aerobic composting device according to claim 1, characterized in that, The top cover (23) is an arc-shaped cover; the tank body (24) is provided with an insulation layer (5); the insulation layer is made of polystyrene foam and has a thickness of not less than 5cm.

5. The method for composting using a stirring and ventilation-linked reciprocating aerobic composting device according to claim 1, characterized in that, The bottom of the tank (24) is provided with a portable mobile frame (9); a locking device is provided on the mobile frame (9).

6. The method for composting using a stirring and ventilation-linked reciprocating aerobic composting device according to claim 1, characterized in that, The ratio of the distance between the leachate separator (12) and the bottom of the tank (24) to the height of the tank ranges from 0.1 to 0.

2.

7. The method for composting using a stirring and ventilation-linked reciprocating aerobic composting device according to claim 1, characterized in that, Both the blower pump (17) and the vacuum pump (19) are variable frequency pumps.

8. The method for composting using a stirring and ventilation-linked reciprocating aerobic composting device according to claim 1, characterized in that, The diameter of the sampling port (11) is not less than 5cm; the size of the inspection port (25) is not less than 15cm×8cm.

9. The method for composting using a stirring and ventilation-linked reciprocating aerobic composting device according to claim 1, characterized in that, The biostimulant riboflavin has a mass ratio of 0.01%~0.05%, and the filler humic acid has a mass ratio of 5%~10%; the ventilation rate during operation is set at 0.1~0.6 L·min. -1 kg -1 The material and the stirring paddle (6) alternate in direction at a frequency of 5~30 min / time.

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