Cabin type compost rapid curing method and system
By calculating enthalpy and inventory levels in real time and using automated control, combined with high-temperature short-time processes and an auditing module, the problem of low efficiency and high energy consumption in traditional composting has been solved. This has enabled a highly efficient and energy-saving composting process and consistent product quality, providing reliable quality traceability and data analysis support.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-31
- Publication Date
- 2026-03-13
AI Technical Summary
Traditional composting methods are inefficient, energy-intensive, and produce unstable product quality. Existing technologies struggle to achieve a dynamic balance between energy, moisture, and oxygen supply, limiting the application of high-temperature, short-time processes. Furthermore, there is a lack of comprehensive management that compares energy consumption and minimum residence time.
By calculating enthalpy inventory in real time and adjusting moisture and oxygen flux, combined with high-temperature short-time process and automated control, the thermal sterilization integral is used to ensure harmlessness, state machine is used to control the switching of each stage, and an audit module is introduced to record data throughout the process.
It achieves high efficiency, energy saving, and consistent product quality in the composting process, shortens the composting time, reduces reliance on operator experience, and provides a reliable basis for quality traceability and data analysis.
Smart Images
Figure CN121652004A_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of organic waste resource utilization, and in particular to a method and system for rapid composting in a container. Background Technology
[0002] Aerobic composting, as a key technology for the resource utilization of organic waste, has wide applications in agriculture and environmental protection. Traditional composting methods often rely on empirical control, such as fixing temperature, aeration, or moisture regulation, but suffer from low efficiency, high energy consumption, and unstable product quality. With technological advancements, existing technologies attempt to optimize the composting process through quantitative parameter control, but limitations still exist.
[0003] The control logic is implemented through specific calculation formulas or hardware modules, resulting in poor technology portability. It fails to treat energy, moisture, and oxygen supply as unified invariants for dynamic balancing; it cannot achieve flexible optimization through equivalent integration, limiting the application of efficient processes such as high-temperature short-time (HPT). The lack of comprehensive management comparing energy consumption and minimum residence time makes it difficult to reduce energy consumption while ensuring product quality. Summary of the Invention
[0004] This disclosure provides a method and system for rapid composting in a container to address the problems existing in related technologies. The technical solution is as follows: In a first aspect, embodiments of this disclosure provide a method for rapid maturation of compost in a container, comprising the following steps: Obtain the state parameters inside the composting chamber and calculate the enthalpy inventory based on the state parameters; wherein, the state parameters include gas phase temperature, relative humidity, gas flow rate, oxygen / carbon dioxide volume fraction and temperature of at least one thermal buffer. Set the enthalpy inventory threshold, moisture window, and oxygen flux window; The enthalpy storage, moisture and oxygen flux are varied by controlling the heat buffer module, moisture migration module and airflow and mixing module; When the calculated enthalpy inventory is greater than the enthalpy inventory threshold, a high-temperature short-time HPT is triggered. The high-temperature short-time HPT ensures that the material peak temperature is not less than the peak temperature and is maintained at δ=5~30 min. The thermal sterilization integral is calculated based on the reference temperature and the real-time temperature until it is not less than the thermal sterilization reference value. The material is discharged when the maturity index, germination index, humic acid or fulvic acid, and exhaust gas NH3 / TVOC all reach the limit values.
[0005] Optionally, an audit snapshot can be generated after the material discharge is completed. The audit snapshot includes the data parameters involved in the above steps. The data parameters include at least one of the following parameters: composting bin number, batch, timestamp, monotonic counter, status parameter, enthalpy and inventory change trajectory, enthalpy and inventory threshold, moisture window, oxygen flux window, material peak temperature, thermal sterilization integral, thermal sterilization reference value, maturity index, germination index, humic acid or fulvic acid, and exhaust gas NH3 / TVOC. The audit snapshot is then signed by a secure element, written to an append-only log, and the hash chain root is updated.
[0006] Optionally, the enthalpy inventory is calculated based on the state parameters, including: multiplying the products of air density, air flow rate, air specific heat capacity at constant pressure and gas phase temperature, the latent heat utilization rate, air density, air flow rate and latent heat of vaporization of water, and the product of the heat capacity coefficient of the heat buffer and the temperature difference of the heat source, and then superimposing the products to obtain the enthalpy inventory.
[0007] Optionally, the thermal kill integral is obtained by integrating the difference between the gas phase temperature and the reference temperature.
[0008] Optionally, the switching of steps in the method is achieved through a state machine, which includes the following states: The conditions for transitioning from the preheating state to the stable feeding state are: the gas phase temperature T is not less than the preheating threshold temperature or the enthalpy inventory is greater than the minimum value among the enthalpy inventory thresholds; the conditions for transitioning from the stable feeding state to the high-temperature short-time state are: the enthalpy inventory is not less than the maximum value among the enthalpy inventory thresholds; the conditions for transitioning from the high-temperature short-time state to the rapid maturation state are: the heat sterilization integral is not less than the heat sterilization reference value; the conditions for transitioning from the rapid maturation state to the discharge state are: the maturity index is not less than the minimum maturity threshold, the germination index is not less than 80%, and the humic acid or fulvic acid is not less than the acidity threshold.
[0009] Optionally, the initial setting of the moisture window is M∈[45%,60%], and it is adaptively narrowed according to the CO2 peak decay rate and the OUR / CER slope, where OUR is the oxygen consumption rate and CER is the carbon dioxide release rate.
[0010] Optionally, the peak temperature is limited to 75–85 °C, δ = 8–20 min.
[0011] Secondly, this disclosure also provides a chamber composting system for implementing the aforementioned chamber composting rapid maturation method, comprising: A heat buffer module, having a heat buffer element, is used to perform heating to control the gas phase temperature; The moisture transfer module is used to control the relative humidity inside the composting chamber. An airflow and mixing module is used to regulate oxygen flux by mixing return air or fresh air. The sensing and control module has sensors for sensing temperature and humidity, flow rate, gas, pressure difference and temperature of the thermal buffer, and performs calculations based on the state parameters obtained by the sensors, and controls the thermal buffer module, moisture migration module and airflow and mixing module based on the calculation results.
[0012] Optionally, the heat buffer is at least one of the following: a phase change heat plate, a heat pipe or a steam chamber, a heat pump heat exchange circuit and a high heat capacity jacket; and / or, the moisture migration module has at least one of the following functions: condensation and re-evaporation, dehumidification and re-humidification and adsorption and desorption; and / or, the airflow and mixing module includes a return air and fresh air mixing chamber and an adjustable recirculation valve.
[0013] Optionally, it also includes an audit module for generating and signing the audit snapshot.
[0014] The advantages or beneficial effects of the above technical solutions include at least the following: This disclosure achieves optimal management of the composting microbial activity environment by calculating and regulating the "enthalpy inventory," which represents the total thermal energy of the system, in real time, and balancing it with the "moisture window" and "oxygen flux window." This integrated control strategy creates ideal conditions for the microorganisms to continuously and efficiently decompose organic matter, thus laying the foundation for improving processing efficiency and reducing energy consumption from the source.
[0015] Building upon this foundation, the introduction of a high-temperature, short-duration process is key to overcoming the bottleneck in processing efficiency. When the enthalpy inventory is sufficient, the system proactively maintains the material temperature at 75-85°C for a short period, utilizing the quantitative indicator of "thermal kill integral" to ensure harmlessness. This replaces the prolonged high-temperature maintenance required in traditional composting to kill pathogens, significantly shortening the high-temperature period from several weeks to potentially days or even hours, greatly accelerating the composting process. Simultaneously, the on-demand start-stop HPT strategy, combined with return-air and fresh-air mixing technology, avoids the energy waste of continuous high-intensity heating, achieving a balance between high efficiency and energy saving.
[0016] This disclosure also significantly improves product quality consistency and process reliability through clear endpoint determination and automated control. It does not rely solely on temperature or time, but comprehensively considers multiple biochemical indicators such as the "maturity index" and "germination index (≥80%)" to determine the maturity endpoint, ensuring the stability and safety of the compost product. More importantly, the entire process is automatically controlled by a "state machine," with precise settings for switching conditions at each stage, minimizing the reliance on operator experience in traditional methods and ensuring that each batch of compost meets predictable high-quality standards.
[0017] Finally, the audit trail module implemented in this disclosure provides crucial safeguards for the industrial application of the technology. The system automatically generates and encrypts signed "audit snapshots" of the entire process data, forming an immutable production log. This not only meets the compliance requirements for product quality traceability but also provides valuable data for continuous data analysis and process parameter optimization, laying the foundation for the technology to move towards large-scale, standardized, and intelligent production.
[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. Further aspects, embodiments, and features of this disclosure will become readily apparent from the accompanying drawings and the following detailed description, in addition to the illustrative aspects, embodiments, and features described above. Attached Figure Description
[0019] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this disclosure and should not be construed as limiting the scope of this disclosure.
[0020] Figure 1 This is a flowchart of the rapid maturation method for chamber composting in this embodiment of the present disclosure; Figure 2 This is a block diagram of a chamber-type composting rapid maturation system according to an embodiment of this disclosure. Detailed Implementation
[0021] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this disclosure. Therefore, the drawings and description are to be considered exemplary in nature and not restrictive.
[0022] In some possible implementations, this bin-type composting rapid maturation method can be implemented by the processor calling computer-readable instructions stored in memory.
[0023] This disclosure provides a method for rapid maturation of compost in a container, such as... Figure 1 As shown, it includes the following steps: S10. Obtain the state parameters inside the composting chamber and calculate the enthalpy inventory based on the state parameters; wherein, the state parameters include gas phase temperature, relative humidity, gas flow rate, oxygen / carbon dioxide volume fraction, and the temperature of at least one thermal buffer; wherein, the above state parameters are obtained with a sampling period of 1–5 s; wherein, the enthalpy inventory... =f(Q_sensible, Q_latent,Q_buffer), where Q_sensible is calculated from the gas-solid temperature and mass flow rate, Q_latent is converted from the humidity ratio, and Q_buffer characterizes the heat storage and release; S20. Set the enthalpy inventory threshold, moisture window, and oxygen flux window; wherein, the enthalpy inventory threshold has a window with a minimum and a maximum value, and the hysteresis width of the difference between the maximum and minimum values must be greater than the energy threshold ΔH_min; the moisture and oxygen flux windows each have a hysteresis width to prevent oscillations. S30. By controlling the heat buffer module, moisture migration module and airflow and mixing module, the enthalpy storage, moisture and oxygen flux are changed; wherein, according to the priority table and mutual exclusion / concurrency rules, ventilation and recirculation, heating or heat storage and release, dehumidification or humidification and stirring are driven, and the recirculation ratio is limited, for example ≤0.1 seconds.
[0024] S40. When the calculated enthalpy inventory is greater than the enthalpy inventory threshold, a high-temperature short-time HPT is triggered. The high-temperature short-time HPT ensures that the material peak temperature is not less than the peak temperature and is maintained at δ=5~30 min. The thermal sterilization integral is calculated based on the reference temperature and the real-time temperature until it is not less than the thermal sterilization reference value. S50. When the maturity index, germination index, humic acid or fulvic acid, and exhaust gas NH3 / TVOC all reach the limit value, the material is discharged.
[0025] The above embodiments can optimize the management of the composting microbial activity environment by calculating and controlling the "enthalpy inventory" representing the total thermal energy of the system in real time, and balancing it with the "moisture window" and "oxygen flux window". This integrated control strategy creates ideal conditions for microorganisms to continuously and efficiently decompose organic matter, thus laying the foundation for improving processing efficiency and reducing energy consumption from the source. On this basis, the introduction of high-temperature short-time process is the key to breaking through the bottleneck of processing efficiency. When the enthalpy inventory is sufficient, the system actively maintains the material temperature at 75-85°C for a short time, and uses the quantitative indicator of "thermal killing integral" to ensure the harmlessness effect. This replaces the long-term high-temperature maintenance required to kill pathogens in traditional composting, significantly shortening the high-temperature period of several weeks to possibly days or even hours, greatly accelerating the maturation process. At the same time, the HPT strategy of starting and stopping on demand, combined with the return air and fresh air mixing technology, avoids the energy waste of continuous high-intensity heating, and achieves the unity of high efficiency and energy saving. This disclosure also greatly improves the quality consistency of the product and the reliability of the process through clear endpoint determination and automated control. It does not rely solely on temperature or time, but rather uses a combination of biochemical indicators such as "maturity index" and "germination index (≥80%)" to determine the end point of composting, thus ensuring the stability and safety of compost products.
[0026] In one embodiment, after material discharge is completed, the following step S60 can be performed: generating an audit snapshot. The audit snapshot includes the data parameters involved in the above steps, including at least one of the following parameters: composting bin number, batch number, timestamp, monotonic counter, status parameter, enthalpy and inventory change trajectory, enthalpy and inventory threshold, moisture window, oxygen flux window, material peak temperature, thermal sterilization integral, thermal sterilization reference value, maturity index, germination index, humic acid or fulvic acid, and exhaust gas NH3 / TVOC. The audit snapshot is then signed by a secure element, written to an append-only log, and the hash chain root is updated. This embodiment can automatically generate and encrypt the signature of the "audit snapshot" recording the entire process data, forming an unalterable production log. This not only meets the compliance requirements for product quality traceability but also provides valuable evidence for continuous data analysis and optimization of process parameters, laying the foundation for the technology to move towards large-scale, standardized, and intelligent production.
[0027] In one embodiment, calculating the enthalpy inventory based on the state parameters includes: multiplying the products of air density, air flow rate, air specific heat capacity at constant pressure, and gas phase temperature; multiplying the latent heat utilization rate, air density, air flow rate, and the latent heat of vaporization of water; and multiplying the heat capacity coefficient of the heat buffer and the temperature difference of the heat source; and then superimposing these products to obtain the enthalpy inventory. This is represented as follows: , in, air density, For air flow rate, The specific heat capacity of air at constant pressure. T Let ζ be the gas phase temperature, and ζ∈[0,1] be the latent heat utilization rate. The latent heat of vaporization of water, The thermal capacity coefficient of the thermal buffer component is... For reference temperature, The temperature of the heat source; The humidity ratio is expressed as: , in, The saturated water vapor pressure Relative humidity, Atmospheric pressure.
[0028] In one embodiment, the thermal kill integral is obtained by integrating the difference between the gas phase temperature and the reference temperature, and can be expressed as follows: , in, For heat kill points, Here, Z is the reference temperature, Z is the temperature constant, and T is the gas phase temperature. The calculation can be performed using a 1-minute integral step size. Linear interpolation is used when the percentage of missing data is ≤5%; otherwise, the hygiene assessment for the current cycle is rejected. Z and Z are derived from the target indicator bacteria spectrum or industry standards.
[0029] In one embodiment, the switching of steps in the method is achieved through a state machine, which includes the following states: The process involves four stages: preheating, stable feeding, high-temperature short-time, rapid maturation, and discharge. The conditions for transitioning from the preheating stage to the stable feeding stage are: the gas phase temperature T is not less than the preheating threshold temperature or the enthalpy inventory is greater than the minimum of the enthalpy inventory thresholds. The conditions for transitioning from the stable feeding stage to the high-temperature short-time stage are: the enthalpy inventory is not less than the maximum of the enthalpy inventory thresholds. The conditions for transitioning from the high-temperature short-time stage to the rapid maturation stage are: the thermal sterilization integral is not less than the thermal sterilization reference value. The conditions for transitioning from the rapid maturation stage to the discharge stage are: the maturity index is not less than the minimum maturity threshold, the germination index is not less than 80%, and the humic acid or fulvic acid is not less than the acidity threshold. The entire process is automatically controlled by a "state machine," with precise settings for the switching conditions at each stage, minimizing the reliance on operator experience in traditional methods and ensuring that each batch of compost meets predictable high-quality standards.
[0030] In one embodiment, the initial setting of the moisture window is M∈[45%,60%], and it is adaptively narrowed based on the CO2 peak decay rate and the OUR / CER slope, where OUR is the oxygen consumption rate and CER is the carbon dioxide release rate. The threshold in the above window can be an adaptive threshold, wherein the threshold adaptation uses recursive least squares or Bayesian updates with the week as the window, and the hysteresis width Δ is not less than three times the median absolute deviation of the respective measurement noise.
[0031] In one embodiment, the peak temperature is limited to 75–85 °C, δ = 8–20 min. Specific preferred values can also be further determined experimentally.
[0032] In one embodiment, the oxygen flux is calculated using gas flow rate and oxygen / carbon dioxide volume fraction. Dual-loop control can be implemented to maintain the oxygen flux by using parameters of the exhaust gas NH3 / TVOC in the outer loop and the oxygen / carbon dioxide in the inner loop. Specifically, the outer loop adjusts the processing and ρ_rec based on the exhaust gas NH3 / TVOC, while the inner loop adjusts the apparent gas velocity and ventilation volume based on O2 / CO2, and locks ρ_rec to [ρ_L, ρ_H] during HPT.
[0033] In one embodiment, the observed apparent air velocity of the airflow is maintained at 0.10–0.30 m / s, and the contact time τ_bio of the polishing section or biofilter is ≥1–3 s.
[0034] In one embodiment, the rate of change of the recirculation ratio ρ_rec satisfies |dρ_rec / dt|≤0.1 / s and is locked in a safe range during HPT.
[0035] In one embodiment, the calculation of specific energy consumption E_sp includes power integration of four channels: stirring, ventilation, humidification and heating, with a sampling period of ≤5 s; when E_sp>E_max for N_e consecutive times (N_e≥3), the energy-saving sub-strategy is entered.
[0036] In one embodiment, the 95% confidence interval of the maturity index CMI is calculated using the Monte Carlo method N≥1000 or GUM propagation, and READY is triggered only when the upper confidence bound is ≥θ_c.
[0037] In one embodiment, the sensors that acquire state parameters can be arranged with 2N redundancy and the consistency coefficient κ can be calculated in real time, requiring κ≥0.8; outliers are eliminated according to the 3×MAD rule.
[0038] Secondly, this disclosure also provides a chamber composting system 100 for implementing the aforementioned chamber composting rapid maturation method, such as... Figure 2 As shown, it includes: Thermal buffer module 1, having a thermal buffer element, is used to perform heating to control the gas phase temperature; Moisture transfer module 2 is used to control the relative humidity inside the composting chamber. Airflow and mixing module 3 is used to regulate oxygen flux by mixing return air or fresh air; The sensing and control module 4 has sensors for sensing temperature and humidity, flow rate, gas, pressure difference and temperature of the thermal buffer, and performs calculations based on the state parameters obtained by the sensors, and controls the thermal buffer module, moisture migration module and airflow and mixing module based on the calculation results.
[0039] Optionally, the heat buffer is at least one of the following: a phase change heat plate, a heat pipe or a steam chamber, a heat pump heat exchange circuit and a high heat capacity jacket; and / or, the moisture migration module has at least one of the following functions: condensation and re-evaporation, dehumidification and re-humidification and adsorption and desorption; and / or, the airflow and mixing module includes a return air and fresh air mixing chamber and an adjustable recirculation valve.
[0040] In one embodiment, an audit module is also included, which is used to generate and sign the audit snapshot.
[0041] In one embodiment, the heat buffer module is a phase change heat exchange plate with a melting point T_m = 62 to 78°C, latent heat L_pcm = 120 to 250 kJ / kg, and inner wall coverage φ_pcm = 15% to 50%.
[0042] In one embodiment, the heat buffer module includes a flat heat pipe or vapor chamber with an equivalent thermal conductivity k_eff ≥ 2000 W / m / K, and is in contact with the phase change heat plate. In one embodiment, the moisture migration module is a condensation-re-evaporation loop, comprising a collection tank and an annular spray pipe, with the nozzle Sauter having an average particle size D32 of 50–200 μm.
[0043] In one embodiment, the moisture migration module is a membrane dehumidification-rehumidification unit, and the membrane module has a moisture permeation flux ≥ 1.0 kg·m³. - ²·h - ¹(25–40 °C).
[0044] In one embodiment, the moisture migration module is an adsorption-desorption unit, the adsorbent is selected from molecular sieves or silica gel, and the desorption temperature is 60-120 °C.
[0045] In one embodiment, the ratio of the effective volume of the return air / fresh air mixing chamber to the cross-sectional area of the main duct, V_mix / A_duct, is 1.5–4.0. It incorporates a built-in honeycomb rectifier unit (pore size 5–20 mm, thickness 30–80 mm) and a three-way rotary damper. The honeycomb rectifier (pore size 5–20 mm, thickness 30–80 mm) and a bottom microperforated plate (pore size 1.5–3.0 mm, opening ratio 0.5–2.5%) are also included, resulting in a flow velocity uniformity variation coefficient ≤15%.
[0046] In one embodiment, the bottom air distribution diffuser plate of the airflow and mixing module is a microporous plate with a pore size of 1.5 to 3.0 mm, an opening ratio of 0.5% to 2.5%, and a flow velocity uniformity variation coefficient ≤15%.
[0047] In one embodiment, temperature, humidity, flow rate, and differential pressure measurements are arranged with 2N redundancy, and abnormal sensors are eliminated by online verification with a consistency coefficient κ≥0.8.
[0048] In one embodiment, the audit module is signed by the security element and written to an append-only log and the hash chain root hlog_root is updated.
[0049] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.
[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.
[0051] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this disclosure, and these should all be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.
Claims
1. A method for rapid maturation of compost in a container, characterized in that, Includes the following steps: Obtain the state parameters inside the composting chamber and calculate the enthalpy inventory based on the state parameters; wherein, the state parameters include gas phase temperature, relative humidity, gas flow rate, oxygen / carbon dioxide volume fraction and temperature of at least one thermal buffer. Set the enthalpy inventory threshold, moisture window, and oxygen flux window; The enthalpy storage, moisture and oxygen flux are varied by controlling the heat buffer module, moisture migration module and airflow and mixing module; When the calculated enthalpy inventory is greater than the enthalpy inventory threshold, a high-temperature short-time HPT is triggered. The high-temperature short-time HPT ensures that the material peak temperature is not less than the peak temperature and is maintained at δ=5~30 min. The thermal sterilization integral is calculated based on the reference temperature and the real-time temperature until it is not less than the thermal sterilization reference value. The material is discharged when the maturity index, germination index, humic acid or fulvic acid, and exhaust gas NH3 / TVOC all reach the limit values.
2. The rapid maturation method for chamber composting as described in claim 1, characterized in that, After the material discharge is completed, an audit snapshot can be generated. The audit snapshot includes the data parameters involved in the above steps. The data parameters include at least one of the following parameters: composting bin number, batch, timestamp, monotonic counter, status parameter, enthalpy and inventory change trajectory, enthalpy and inventory threshold, moisture window, oxygen flux window, material peak temperature, thermal sterilization integral, thermal sterilization reference value, maturity index, germination index, humic acid or fulvic acid, and exhaust gas NH3 / TVOC. The audit snapshot is then signed by a secure element, written to the append-only log, and the hash chain root is updated.
3. The rapid maturation method for bin-type composting as described in claim 1 or 2, characterized in that, The enthalpy inventory is calculated based on the state parameters, including: multiplying the products of air density, air flow rate, air specific heat capacity at constant pressure and gas phase temperature, the latent heat utilization rate, air density, air flow rate and latent heat of vaporization of water, and the product of the heat capacity coefficient of the heat buffer and the temperature difference of the heat source, and then superimposing the products of these three to obtain the enthalpy inventory.
4. The rapid maturation method for bin-type composting as described in claim 1 or 2, characterized in that, The thermal kill integral is obtained by integrating the difference between the gas phase temperature and the reference temperature.
5. The rapid maturation method for chamber composting as described in claim 4, characterized in that, The switching of steps in the method is achieved through a state machine, which includes the following states: The conditions for transitioning from the preheating state to the stable feeding state are: the gas phase temperature T is not less than the preheating threshold temperature or the enthalpy inventory is greater than the minimum value among the enthalpy inventory thresholds; the conditions for transitioning from the stable feeding state to the high-temperature short-time state are: the enthalpy inventory is not less than the maximum value among the enthalpy inventory thresholds; the conditions for transitioning from the high-temperature short-time state to the rapid maturation state are: the heat sterilization integral is not less than the heat sterilization reference value; the conditions for transitioning from the rapid maturation state to the discharge state are: the maturity index is not less than the minimum maturity threshold, the germination index is not less than 80%, and the humic acid or fulvic acid is not less than the acidity threshold.
6. The rapid maturation method for bin-type composting as described in claim 1 or 2, characterized in that, The initial setting of the moisture window is M∈[45%,60%], and it is adaptively narrowed according to the CO2 peak decay rate and the OUR / CER slope, where OUR is the oxygen consumption rate and CER is the carbon dioxide release rate.
7. The rapid maturation method for bin-type composting as described in claim 1 or 2, characterized in that, The peak temperature is limited to 75–85 °C, δ = 8–20 min.
8. A bin-type composting system for implementing the bin-type composting rapid maturation method as described in any one of claims 1-7, characterized in that, include: A heat buffer module, having a heat buffer element, is used to perform heating to control the gas phase temperature; Moisture transfer module is used to control the relative humidity inside the composting chamber; An airflow and mixing module is used to regulate oxygen flux by mixing return air or fresh air. The sensing and control module has sensors for sensing temperature and humidity, flow rate, gas, pressure difference and temperature of the thermal buffer, and performs calculations based on the state parameters obtained by the sensors, and controls the thermal buffer module, moisture migration module and airflow and mixing module based on the calculation results.
9. The chamber composting system as described in claim 8, characterized in that, The heat buffer is at least one of the following: a phase change heat plate, a heat pipe or a steam chamber, a heat pump heat exchange circuit and a high heat capacity jacket; and / or, the moisture migration module has at least one of the following functions: condensation and re-evaporation, dehumidification and re-humidification and adsorption and desorption; and / or, the airflow and mixing module includes a return air and fresh air mixing chamber and an adjustable recirculation valve.
10. The chamber composting system as described in claim 8, characterized in that, It also has an audit module, which is used to generate and sign the audit snapshot.