Composting method of organic waste

Abstract

The invention belongs to the technical field of composting, and particularly relates to an organic waste composting method. The composting method of the organic waste comprises the following steps: mixing the organic waste and a composting inoculant, stacking the mixture in a fermentation tank to obtain a pile body, carrying out aerobic fermentation on the pile body, and respectively obtaining a temperature value, a humidity value, an oxygen concentration value and a pH value of the pile body, according to any one of the conditions that the temperature value is within the first preset range, the humidity value is within the second preset range, the oxygen concentration value is within the third preset range and the pH value is within the fourth preset range, the pile body in the fermentation tank is treated. According to the composting method of the organic waste, the environment of the compost body is always kept in an optimal range, so that the activity of aerobic microorganisms is promoted to the maximum extent, and the composting quality is improved. When the temperature, the humidity, the oxygen concentration or the pH value of the compost body exceed a preset range, the system can automatically adjust the operation so as to ensure that the composting process is stably and efficiently carried out.

Description

Technical Field

[0001] The invention belongs to the technical field of composting, and in particular relates to a composting method for organic waste. Background Art

[0002] Organic waste fermentation composting is a key environmental protection technology that converts biodegradable organic matter into stable organic fertilizer through the action of microorganisms. It is widely used in agriculture, horticulture and environmental protection. However, traditional composting processes face many technical challenges in actual operation, especially in terms of uniform ventilation and insufficient oxygen supply. Existing composting methods mainly rely on manual or mechanical turning to improve ventilation conditions, but manual turning is labor-intensive, inefficient and difficult to achieve uniform operation, which easily leads to the formation of anaerobic environment in some areas inside the pile, inhibiting the activity of aerobic microorganisms, reducing the decomposition rate of organic matter, and prolonging the composting cycle. In addition, although mechanical turning has improved the ventilation efficiency to a certain extent, the equipment investment is high, the energy consumption is large, and uneven ventilation may still occur during large-scale composting, affecting the quality and environmental friendliness of the compost. Uneven ventilation and insufficient oxygen supply not only limit the effective decomposition of microorganisms, leading to difficulties in temperature management and increased odor emissions during the composting process, but also make the quality of compost products unstable, contain incompletely decomposed organic matter or harmful microorganisms, and reduce its agricultural application value. Therefore, there is an urgent need to develop a new composting process that can effectively solve the problems of uneven ventilation and insufficient oxygen supply, so as to improve composting efficiency, shorten the composting cycle, improve the quality of composting, and realize the automation and intelligent management of the composting process, so as to meet the needs of modern environmental protection and resource recycling. Summary of the invention

[0003] The purpose of the present invention is to at least solve the problem of inaccurate control of environmental parameters in existing composting processes. This purpose is achieved through the following technical solutions:

[0004] The present invention provides a composting method for organic waste, comprising the following steps:

[0005] Mixing organic waste and a composting agent and piling them into a fermentation tank to obtain a pile;

[0006] aerobic fermentation of the pile;

[0007] Respectively obtaining the temperature value, humidity value, oxygen concentration value and pH value of the pile;

[0008] According to any one of the temperature value being within the first preset range, the humidity value being within the second preset range, the oxygen concentration value being within the third preset range, and the pH value being within the fourth preset range, the pile in the fermentation tank is processed.

[0009] According to the composting method of organic waste of the present invention, the real-time monitoring and dynamic adjustment of the temperature value, humidity value, oxygen concentration value and pH value can not only ensure the supply of oxygen, but also adjust the temperature, humidity and pH value of the pile body according to the changes of other environmental parameters. In this way, the environment of the pile body is always kept within the optimal range, thereby maximizing the activity of aerobic microorganisms and improving the quality of composting. When the temperature, humidity, oxygen concentration or pH value of the pile body exceeds the preset range, the system can automatically adjust the operation to ensure the stability and efficiency of the composting process.

[0010] In addition, the composting method of organic waste according to the present invention may also have the following additional technical features:

[0011] In some embodiments of the present invention, the first preset range is a temperature value lower than 50° C. and higher than 70° C., and according to the temperature value being within the first preset range, the step of treating the pile in the fermentation tank comprises:

[0012] The turning device is controlled to turn and aerate the pile.

[0013] In some embodiments of the present invention, the second preset range is a humidity value lower than 50% and higher than 60%, and according to the humidity value being within the second preset range, the step of treating the pile in the fermentation tank comprises:

[0014] If the humidity value is lower than 50%, the turning device is controlled to spray water to the pile in the fermentation tank;

[0015] If the humidity value is higher than 60%, the turning device is controlled to turn and aerate the pile.

[0016] In some embodiments of the present invention, the third preset range is an oxygen concentration value lower than 15% and higher than 20%. According to the oxygen concentration value being within the third preset range, the step of treating the pile in the fermentation tank includes:

[0017] If the oxygen concentration is lower than 15%, controlling the turning device to turn the pile for aeration;

[0018] If the oxygen concentration value is higher than 20%, the turning device is controlled to evenly cover the composting materials on the pile.

[0019] In some embodiments of the present invention, the fourth preset range is a pH value lower than 6.0 and higher than 8.0. According to the pH value being within the fourth preset range, the step of treating the pile in the fermentation tank comprises:

[0020] If the pH value is lower than 6.0, controlling the turning device to turn the pile over and spraying the calcium carbonate solution during the turning process;

[0021] If the pH value is higher than 8.0, the turning device is controlled to turn the pile over, and ammonium sulfate solution is sprayed during the turning process.

[0022] In some embodiments of the present invention, the concentration of the calcium carbonate solution is 5% to 10%; the concentration of the ammonium sulfate solution is 5% to 7%.

[0023] In some embodiments of the present invention, the amount of the calcium carbonate solution sprayed each time is 0.3% to 8% of the volume of the pile; the amount of the ammonium sulfate solution sprayed each time is 0.2% to 0.6% of the volume of the pile.

[0024] In some embodiments of the present invention, the intensity of the aeration is 0.5 to 0.9 m 3 / (m 3 h).

[0025] In some embodiments of the present invention, the steps of respectively obtaining the temperature value, humidity value, oxygen concentration value and pH value of the stack body include:

[0026] Every 3 to 5 hours, the temperature, humidity, oxygen concentration and pH value of the pile are obtained and recorded in the data center.

[0027] In some embodiments of the present invention, trend analysis is performed based on the data recorded by the data center. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0029] Figure 1 A flow chart of a composting method for organic waste according to an embodiment of the present invention;

[0030] Figure 2 The structural diagram of the turning device and the fermentation tank according to the embodiment of the present invention is schematically shown.

[0031] The reference numerals are as follows:

[0032] 100. fermentation tank; 101. pile body; 200. turning device. DETAILED DESCRIPTION

[0033] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0034] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0035] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0036] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both above and below orientations.

[0037] like Figure 2As shown, before explaining the composting method of organic waste of the present application, the turning device 200 to be used in the present application is first explained. The turning device 200 includes a mounting assembly, a turning assembly, a transmission part, a hydraulic assembly, a walking mechanism, a control device and a spraying assembly, etc. Specifically, the first mounting plate of the mounting assembly serves as the basic component of the turning device 200 and carries the entire turning device 200. The walking mounting bracket of the walking mechanism is connected to the first mounting plate to support the weight of the turning device 200. The walking mounting bracket is firmly installed to ensure the stability of the turning device 200 in the tank. The walking wheels are installed through the walking mounting plate, and the walking wheels are connected to the walking mounting plate through bearings, so that the turning device 200 can move freely in the fermentation tank 100. The number and layout design of the walking wheels ensure that the turning device 200 can move flexibly in the tank to avoid getting stuck or deviating from the track. The second mounting plate of the mounting assembly is connected to the first mounting plate in a rotatable manner to form a certain angle. The second mounting plate supports the movement of the turning assembly. The flipping assembly includes a bracket and a flipping connecting plate. The bracket supports the entire flipping assembly and is connected to the second mounting plate to ensure that the flipping assembly can operate stably. Multiple brackets are evenly distributed along the second mounting plate to enhance the overall supporting force. The flipping connecting plate is composed of L-shaped angle steel, and is matched with a chain and a flipping tooth to form a flipping part. Each flipping part includes a plurality of flipping teeth staggered along the extension direction of the connecting plate to ensure that the material is evenly flipped during the flipping process. The hydraulic assembly includes a hydraulic cylinder and a hydraulic piston. The hydraulic cylinder is fixedly mounted on the first mounting plate to provide hydraulic power. The hydraulic piston is connected to the second mounting plate. The telescopic adjustment angle of the piston controls the motion trajectory of the flipping assembly. The spraying assembly includes a spraying pipeline, a liquid storage container and a liquid distribution valve. The spraying assembly is connected to multiple nozzles through a pipeline, and the nozzles are distributed around the flipping connecting plate. The pipeline is connected to the liquid storage container, and the liquid flow is controlled by a valve. The liquid storage container includes multiple, respectively storing water, calcium carbonate solution and ammonium sulfate solution, etc. Each solution is equipped with an independent control valve, and the spraying amount of each liquid is accurately controlled by the control valve. The control device can control the start and stop of the flipping device 200, the angle adjustment of the hydraulic system, the operation of the spraying system, etc.

[0038] It can be understood that the turning device 200 is arranged on the fermentation tank 100 and moves along the tracks on both sides of the fermentation tank 100.

[0039] like Figure 1 As shown, according to an embodiment of the present invention, a composting method for organic waste is proposed, comprising the following steps:

[0040] Mixing organic waste and a composting agent and stacking them in a fermentation tank 100 to obtain a stack 101;

[0041] aerobic fermentation of the pile 101;

[0042] Respectively obtain the temperature value, humidity value, oxygen concentration value and pH value of the stack body 101;

[0043] The stack 101 in the fermentation tank 100 is processed according to any one of the temperature value being within the first preset range, the humidity value being within the second preset range, the oxygen concentration value being within the third preset range, and the pH value being within the fourth preset range.

[0044] According to the composting method of organic waste of the present invention, the real-time monitoring and dynamic adjustment of the temperature value, humidity value, oxygen concentration value and pH value can not only ensure the supply of oxygen, but also adjust the temperature, humidity and pH value of the pile 101 according to the changes of other environmental parameters. In this way, the environment of the pile 101 is always kept within the optimal range, thereby maximizing the activity of aerobic microorganisms and improving the quality of composting. When the temperature, humidity, oxygen concentration or pH value of the pile 101 exceeds the preset range, the system can automatically adjust the operation to ensure the stability and efficiency of the composting process.

[0045] In some embodiments, the temperature in the first preset range is lower than 50°C and higher than 70°C. According to the temperature value being within the first preset range, the step of treating the pile 101 in the fermentation tank 100 includes controlling the turning device 200 to turn and aerate the pile 101. The temperature stage of composting is mainly divided into the initial stage, the active stage and the mature stage. If the temperature is between 50°C and 70°C, it means that the compost has entered the active stage. In this stage, biological activity is at its peak, and a large amount of organic matter is decomposed by aerobic microorganisms. The temperature is between 50°C and 70°C, which means that the temperature is suitable. Too high or too low a temperature of the pile 101 will affect the microbial activity and the decomposition efficiency of organic matter during the composting process. Through turning and aeration, the pile 101 can be helped to dissipate heat, avoiding the problem of death of microorganisms and overheating of the pile 101 caused by excessive temperature. At the same time, the turning operation also helps to redistribute the heat of the pile 101 and avoid the temperature being too high or too low locally in the pile 101. Turning and aeration can help regulate the temperature of the pile 101 to keep it within an ideal range (between 50° C. and 70° C.), which can promote the growth of aerobic microorganisms and the decomposition of organic matter, thereby improving composting efficiency.

[0046] In some embodiments, the second preset range is a humidity value lower than 50% and higher than 60%. According to the humidity value being within the second preset range, the step of treating the pile 101 in the fermentation tank 100 includes controlling the turning device 200 to spray water to the pile 101 in the fermentation tank 100 when the humidity value is lower than 50%; or, when the humidity value is higher than 60%, controlling the turning device 200 to turn and aerate the pile 101. By real-time monitoring of the humidity of the pile 101 and automatically taking corresponding adjustment measures when the humidity deviates from the ideal range, it is ensured that the humidity of the pile 101 is always maintained in the optimal range (50%-60%). Humidity is crucial to the activity of microorganisms in the composting process. Too high or too low humidity will affect the efficiency and quality of composting. Therefore, by controlling the change of humidity value, it can be ensured that microorganisms perform aerobic fermentation under optimal humidity conditions. When the humidity of the pile 101 is lower than 50%, it may cause the activity of microorganisms in the composting process to decrease, affecting the speed of organic matter decomposition. At this time, by replenishing water through the water spray system, the humidity of the pile 101 can be quickly increased, and the suitable humidity range (i.e., the second preset range) of the pile 101 can be restored. Appropriate moisture helps the reproduction and activity of microorganisms, accelerates the decomposition of organic waste, and ensures that the composting process is carried out efficiently. By spraying water, the pile 101 can be prevented from drying, and the adverse effects of low humidity on microbial activity can be avoided. By adjusting the humidity in time, the problems of uneven turning and slow fermentation caused by drying of the pile 101 can be avoided, thereby accelerating the composting process, shortening the composting cycle, and improving the composting efficiency. If the humidity of the pile 101 is higher than 60%, it may cause the pile 101 to be too humid, easily forming an anaerobic environment, inhibiting the activity of aerobic microorganisms, and may also produce bad gases (such as hydrogen sulfide, ammonia, etc.). By controlling the turning and aeration device 200 to turn and aerate, the oxygen supply of the pile 101 can be effectively increased, water evaporation can be promoted, and humidity can be reduced. The function of turning and aeration is not only to adjust the humidity, but also to ensure that the oxygen supply in the pile 101 is sufficient. Oxygen is essential for the activity of microorganisms during the composting process, especially in a high humidity environment. Turning and aeration helps to break the dense structure of the pile 101, improve oxygen penetration, and prevent anaerobic fermentation. Turning and aeration can avoid anaerobic fermentation caused by excessive humidity in the pile 101, ensure that the composting process is in an ideal aerobic environment, thereby improving the fermentation quality of organic fertilizers and reducing the generation of odors and undesirable gases.

[0047] In some embodiments, the third preset range is an oxygen concentration value lower than 15% and higher than 20%. According to the oxygen concentration value being within the third preset range, the step of treating the pile 101 in the fermentation tank 100 includes controlling the turning device 200 to turn and aerate the pile 101 when the oxygen concentration value is lower than 15%; or, when the oxygen concentration value is higher than 20%, controlling the turning device 200 to evenly cover the compost raw materials on the pile 101. By real-time monitoring of the oxygen concentration of the pile 101 and automatically adjusting the composting environment according to the preset oxygen concentration range (i.e., the third preset range), it can be ensured that the oxygen concentration in the pile 101 is always at the optimal level required for microbial activity. Too low or too high oxygen concentration will affect the composting efficiency and quality, so this method can effectively avoid unbalanced oxygen supply. When the oxygen concentration is lower than 15%, the pile 101 may have anoxic or anaerobic environment, which will not only inhibit the activity of aerobic microorganisms, but also may cause the accumulation of harmful gases (such as hydrogen sulfide, ammonia, etc.), affecting the quality of composting. By turning and aerating, the ventilation volume of the pile 101 can be increased, the dense structure of the pile 101 can be broken, the oxygen circulation can be promoted, and the formation of anaerobic areas in the pile 101 can be prevented. The turning and aeration operation can help aerobic microorganisms obtain more oxygen and maintain efficient decomposition. By increasing the oxygen supply, the activity of microorganisms is fully mobilized, thereby accelerating the decomposition and composting process of organic matter and improving the composting efficiency. Turning and aeration not only increases the oxygen supply, but also enables the composting materials to be more evenly exposed to oxygen, avoiding incomplete fermentation caused by lack of oxygen in some areas of the pile 101, and ensuring the uniformity of the composting process. When the oxygen concentration exceeds 20%, it means that the oxygen supply of the pile 101 is too much, which may cause the microbial activity to be too intense, but waste oxygen, and excessive oxygen may cause the humidity of the pile 101 to be too low. At this time, by evenly covering the compost raw materials (such as straw, fodder, etc.), the surface area of ​​the pile 101 exposed to the air can be effectively reduced, reducing the impact of excessive oxygen supply. Covering the compost raw materials can help maintain the humidity of the pile 101 and prevent excessive evaporation of water. Excessive oxygen supply may lead to water loss and affect the activity of microorganisms, while covering the raw materials helps to keep the pile 101 moist, thereby facilitating efficient decomposition by microorganisms. Covering the composting raw materials helps to maintain the loose structure of the pile 101, prevents the pile 101 from being over-ventilated or dry, and ensures that the microorganisms can move in a suitable environment during the composting process, thereby maintaining a smooth and efficient composting process.

[0048] In some embodiments, the fourth preset range is a pH value lower than 6.0 and higher than 8.0. According to the pH value being within the fourth preset range, the step of treating the pile 101 in the fermentation tank 100 includes when the pH value is lower than 6.0, controlling the turning device 200 to turn the pile 101, and spraying the calcium carbonate solution during the turning process; when the pH value is higher than 8.0, controlling the turning device 200 to turn the pile 101, and spraying the ammonium sulfate solution during the turning process. During the composting process, the pH value is crucial to the activity of microorganisms. Microorganisms can efficiently decompose organic matter within a suitable pH range (i.e., the fourth preset range). When the pH value is lower than 6.0, the acidic environment will inhibit microbial activity; when the pH value is higher than 8.0, the alkaline environment will also have an adverse effect on microorganisms. By spraying calcium carbonate solution or ammonium sulfate solution, the pH value of the pile 101 can be accurately adjusted to ensure that it is always in the ideal range required for microbial activity. When the pH value of the pile 101 is lower than 6.0, the composting environment is acidic, which may inhibit the activity of aerobic microorganisms and slow down the decomposition of organic matter. As an alkaline substance, calcium carbonate solution can quickly neutralize the acidity of the pile 101, increase the pH value, and restore the ideal pH value of the composting environment. By spraying calcium carbonate solution, it can ensure that the environment of the pile 101 is more friendly to microorganisms, promote their activity, and thus accelerate the composting process. The appropriate pH value can enhance the metabolic efficiency of microorganisms and shorten the composting cycle. Low pH values ​​may lead to the accumulation of harmful gases such as hydrogen sulfide and ammonia, which not only have a negative impact on the quality of the compost, but also may pollute the environment. Through the neutralization of calcium carbonate, the generation of these harmful gases can be effectively reduced. When the pH value of the pile 101 is too high (higher than 8.0), the composting environment is alkaline, which will inhibit the activity of some microorganisms and cause the decomposition rate to slow down. Ammonium sulfate solution is an acidic substance that can quickly reduce the pH value of the pile 101 and restore the appropriate pH value. By spraying the ammonium sulfate solution, the pH value of the pile 101 can be effectively controlled to avoid the inhibitory effect of the excessively high alkaline environment on the activity of microorganisms, thereby maintaining the normal progress of the composting process. Adjusting the pH value to an appropriate range can enhance the activity of microorganisms and improve the composting efficiency. The ammonium sulfate solution not only adjusts the pH value, but also provides an additional nitrogen source for the compost, which helps to further promote the growth and reproduction of microorganisms, accelerate the decomposition of organic waste, and improve the quality of the compost.

[0049] It is understandable that the use of the turning device 200 ensures that the solution is evenly distributed in the pile 101 during the turning process, so that the calcium carbonate solution or the ammonium sulfate solution can evenly cover the surface and the interior of the pile 101. The turning operation helps to fully mix the materials and avoid local areas that are not exposed to the solution, thereby ensuring that the entire pile 101 can be properly adjusted in pH. The turning operation increases the air permeability of the pile 101, promotes the penetration of oxygen, helps to avoid anaerobic conditions in some areas of the pile 101 caused by acid-base imbalance, and improves the decomposition efficiency of the compost.

[0050] It is understood that the concentration of the calcium carbonate solution is 5% to 10% or the concentration of the ammonium sulfate solution is 5% to 7%. When the pH value of the pile 101 is lower than 6.0, the pile 101 may be in an acidic environment, inhibiting the activity of aerobic microorganisms and slowing down the decomposition process. The 5%-10% calcium carbonate solution can effectively neutralize the acidity in the pile 101, increase the pH value, restore the appropriate pH value of the pile 101, and promote the reproduction of microorganisms and the rapid decomposition of organic matter. The concentration of 5% to 10% calcium carbonate solution can ensure that the pH value of the pile 101 is adjusted quickly but gently in a low pH environment, avoiding excessive use resulting in excessive pH values ​​and adverse effects on microorganisms. Moderate concentration helps to stabilize the environment of the pile 101 and ensure that the composting process proceeds smoothly. When the pH value of the pile 101 is higher than 8.0, the pile 101 may be alkaline, affecting the activity of microorganisms and reducing the composting efficiency. 5%-7% ammonium sulfate solution can effectively reduce the pH value of the pile 101 and restore the appropriate acid-base environment of the pile 101. Sulfate ions in the ammonium sulfate react with alkaline substances in the compost to quickly neutralize the alkalinity of the pile 101 and adjust the pH value of the pile 101 to an ideal range. By accurately controlling the concentration of the ammonium sulfate solution, excessive use can be avoided to prevent excessive acidification of the pile 101. In this way, microorganisms can reproduce and decompose organic matter under appropriate pH, accelerating the composting process.

[0051] Furthermore, the amount of calcium carbonate solution sprayed each time is 0.3% to 8% of the volume of the pile 101 or the amount of ammonium sulfate solution sprayed each time is 0.2% to 0.6% of the volume of the pile 101. When the pH value of the pile 101 is lower than 6.0, the composting environment is acidic, which may inhibit the activity of aerobic microorganisms and slow down the decomposition of organic waste. When the amount of calcium carbonate solution sprayed is 0.3% to 8% of the volume of the pile 101, the pH value of the pile 101 can be accurately adjusted, the acidity can be quickly neutralized, and a suitable acid-base environment can be restored. The moderate concentration ensures that the pH value will not be excessively increased during the treatment process, avoiding negative effects on the growth of microorganisms. When the pH value of the pile 101 is too high (higher than 8.0), the composting environment is alkaline, which affects the activity of microorganisms and reduces the composting efficiency. When the spraying amount of the ammonium sulfate solution is 0.2% to 0.6% of the volume of the pile body 101, the pH value of the pile body 101 can be effectively reduced, the pile body 101 can be quickly adjusted to a suitable range, and the activity of the microorganisms can be restored.

[0052] In some embodiments, the step of obtaining the temperature value, humidity value, oxygen concentration value and pH value of the pile 101 includes obtaining the temperature value, humidity value, oxygen concentration value and pH value of the pile 101 every 3 hours to 5 hours, and recording them in the data center. By regularly obtaining the temperature, humidity, oxygen concentration and pH value of the pile 101, environmental changes during the composting process can be monitored in real time. These parameters have a direct impact on microbial activity and composting efficiency, and real-time data collection can help ensure that the composting environment is always in optimal conditions.

[0053] Furthermore, trend analysis is performed based on the data recorded in the data center. Trend analysis can reveal the changing trends of environmental parameters during the composting process. For example, whether the temperature continues to rise, whether the humidity gradually decreases, whether the oxygen concentration fluctuates, etc. By analyzing these trends, managers can predict potential problems in the composting process and take measures to intervene in advance.

[0054] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A composting method for organic waste, characterized in that: The steps include: Mixing organic waste and a composting agent and piling them into a fermentation tank to obtain a pile; aerobic fermentation of the pile; Respectively obtaining the temperature value, humidity value, oxygen concentration value and pH value of the pile; The pile in the fermentation tank is processed according to any one of the temperature value being within the first preset range, the humidity value being within the second preset range, the oxygen concentration value being within the third preset range, and the pH value being within the fourth preset range.

2. The composting method of organic waste according to claim 1, characterized in that: The first preset range is a temperature value lower than 50° C. and higher than 70° C. According to the temperature value being within the first preset range, the step of treating the pile in the fermentation tank includes: The turning device is controlled to turn and aerate the pile.

3. The composting method of organic waste according to claim 1, characterized in that: The second preset range is a humidity value lower than 50% and higher than 60%. According to the humidity value being within the second preset range, the step of processing the pile in the fermentation tank includes: If the humidity value is lower than 50%, the turning device is controlled to spray water to the pile in the fermentation tank; If the humidity value is higher than 60%, the turning device is controlled to turn and aerate the pile.

4. The composting method of organic waste according to claim 1, characterized in that: The third preset range is that the oxygen concentration value is lower than 15% and higher than 20%. According to the oxygen concentration value being within the third preset range, the step of treating the pile in the fermentation tank includes: If the oxygen concentration is lower than 15%, controlling the turning device to turn the pile for aeration; If the oxygen concentration value is higher than 20%, the turning device is controlled to evenly cover the composting materials on the pile.

5. The composting method of organic waste according to claim 1, characterized in that: The fourth preset range is a pH value lower than 6.0 and higher than 8.

0. According to the pH value being within the fourth preset range, the step of treating the pile in the fermentation tank comprises: If the pH value is lower than 6.0, controlling the turning device to turn the pile over and spraying the calcium carbonate solution during the turning process; If the pH value is higher than 8.0, the turning device is controlled to turn the pile over, and ammonium sulfate solution is sprayed during the turning process.

6. The composting method of organic waste according to claim 5, characterized in that: The concentration of the calcium carbonate solution is 5% to 10%; the concentration of the ammonium sulfate solution is 5% to 7%.

7. The composting method of organic waste according to claim 6, characterized in that: The amount of the calcium carbonate solution sprayed each time is 0.3% to 8% of the volume of the pile; the amount of the ammonium sulfate solution sprayed each time is 0.2% to 0.6% of the volume of the pile.

8. The composting method of organic waste according to any one of claims 2 to 4, characterized in that: The intensity of the aeration is 0.5 to 0.9 m 3 / (m 3 h).

9. The composting method of organic waste according to any one of claims 1 to 7, characterized in that: The steps of respectively obtaining the temperature value, the humidity value, the oxygen concentration value and the pH value of the stack body include: Every 3 hours to 5 hours, the temperature value, humidity value, oxygen concentration value and pH value of the stack are obtained respectively and recorded in a data center.

10. The composting method of organic waste according to claim 9, characterized in that: A trend analysis is performed based on the data recorded by the data center.

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