Intelligent control method for stirring device of full-mix anaerobic reactor and related equipment

Abstract

This invention relates to an intelligent control method and related equipment for a stirring device in a fully mixed anaerobic reactor. The method includes: acquiring the mapping relationship between the concentration of a target liquid resource in the stirring device and time; determining the real-time concentration of the target liquid resource based on the mapping relationship; obtaining the real-time gas-liquid conversion index value of the target resource based on the real-time concentration using an anaerobic digestion model; comparing the real-time gas-liquid conversion index value with a preset index value to obtain a comparison result; and regulating the operating frequency of the stirring device in the fully mixed anaerobic reactor based on the comparison result. This application achieves variable frequency control of the stirring device's motor by flexibly adjusting its operating frequency, ensuring that the motor's operating frequency matches the stirring requirements of gas-liquid separation. This accelerates gas-liquid separation, improves the efficiency of anaerobic reaction in producing the target resource, and optimizes motor performance.

Description

Technical Field

[0001] This invention relates to the field of computer technology, and in particular to an intelligent control method and related equipment for a stirring device in a fully mixed anaerobic reactor. Background Technology

[0002] The anaerobic fermentation reactors commonly used to produce biogas are usually continuous stirred tank reactors (CSTRs). They adopt a sequencing batch feeding method and meet the requirements of full mixing through mechanical stirring devices. They are widely used in the treatment of straw, manure, sludge, kitchen waste and other waste.

[0003] In practical engineering, variable frequency motors are often used to power mechanical mixing devices, maintaining a constant frequency after startup. However, with sequential batch feeding, the biogas production rate (biogas flow rate) is not constant. A constant mixing method cannot meet the energy consumption requirements of different reaction stages in anaerobic fermentation, resulting in high energy consumption and stagnant efficiency. Therefore, improving biogas production efficiency is an urgent problem to be solved. Summary of the Invention

[0004] To meet the dynamic energy consumption requirements of stirring at different reaction stages of anaerobic fermentation, optimize mechanical stirring performance, and improve reaction efficiency, this invention provides an intelligent control method and related equipment for a stirring device in a fully mixed anaerobic reactor.

[0005] In a first aspect, to solve the above-mentioned technical problems, the present invention provides an intelligent control method for a stirring device of a fully mixed anaerobic reactor, the method comprising:

[0006] Obtain the mapping relationship between the liquid phase target resource concentration and time in the stirring device of the fully mixed anaerobic reactor, and determine the real-time liquid phase target resource concentration based on the mapping relationship between the liquid phase target resource concentration and time;

[0007] The real-time gas-liquid conversion index value of the target resource is obtained based on the real-time liquid phase target resource concentration using an anaerobic digestion model;

[0008] The real-time gas-liquid conversion index value is compared with the preset index value to obtain the comparison result;

[0009] The operating frequency of the stirring device in the fully mixed anaerobic reactor is adjusted based on the comparison results.

[0010] The beneficial effects of the method provided by this invention are:

[0011] By obtaining the mapping relationship between the liquid-phase target resource concentration and time, the real-time liquid-phase target resource concentration at various moments can be quickly obtained, thereby improving the control efficiency of adaptive regulation of the operating frequency of the stirring device in the fully mixed anaerobic reactor. Furthermore, this application utilizes an anaerobic digestion model to obtain the real-time gas-liquid conversion index value corresponding to the real-time liquid-phase target resource concentration. The gas-liquid conversion index value represents the target resource's ability to convert from the liquid phase to the gas phase. Then, by flexibly adjusting the operating frequency of the stirring device through the relationship between the real-time gas-liquid conversion index value and the preset index value, the energy consumption requirement of the stirring device corresponding to the real-time gas-liquid conversion index value is met, thereby improving the gas-liquid conversion efficiency of the target resource, promoting the anaerobic digestion biochemical reaction equilibrium towards a direction conducive to the production of more target resources, and simultaneously optimizing the motor performance of the stirring device in the fully mixed anaerobic reactor.

[0012] Based on the above technical solution, the intelligent control method of the stirring device of the fully mixed anaerobic reactor of the present invention can be further improved as follows.

[0013] Furthermore, obtaining the mapping relationship between the target liquid phase resource concentration and time within the stirred device of the fully mixed anaerobic reactor includes:

[0014] Obtain the measured output potential of the target resources;

[0015] Based on the target resource output potential, a mapping relationship between the concentration of the liquid phase target resource and time is obtained.

[0016] The beneficial effect of adopting the above-mentioned further scheme is that, in the process of measuring the output potential of the target resource, a mapping relationship between the concentration of the target resource in the liquid phase and time is constructed. Through the above mapping relationship, the constantly changing output capacity of the target resource can be quickly identified, thereby improving the control efficiency of adaptive control of the operating frequency of the stirring device of the fully mixed anaerobic reactor.

[0017] Furthermore, the step of obtaining the real-time gas-liquid conversion index value of the target resource based on the real-time liquid phase target resource concentration using an anaerobic digestion model includes:

[0018] Gas-liquid transition data were obtained using an anaerobic digestion model;

[0019] The real-time gas-liquid conversion index value of the target resource is obtained based on the gas-liquid conversion data and the real-time liquid phase target resource concentration.

[0020] The beneficial effect of adopting the above-mentioned further scheme is that by using the general anaerobic digestion model of anaerobic fermentation reaction to obtain various reactant parameters and reaction parameters in the process of total mixed anaerobic reaction as gas-liquid conversion data, and calculating the real-time gas-liquid conversion index value of the target resource based on the real-time liquid phase target resource concentration and gas-liquid conversion data, the rate of dynamic production capacity of the target resource is further improved.

[0021] Furthermore, obtaining the gas-liquid conversion index value of the target resource at the current moment based on the gas-liquid conversion data and the real-time liquid phase target resource concentration includes:

[0022] Based on the gas-liquid conversion data, a target calculation formula for the gas-liquid conversion index value of the target resource is constructed;

[0023] The real-time gas-liquid conversion index value is obtained based on the target calculation formula and the real-time liquid phase target resource concentration.

[0024] The beneficial effect of adopting the above-mentioned further scheme is that, based on the gas-liquid conversion data collected by the anaerobic digestion model, a target calculation formula for the gas-liquid conversion index value of the target resource is derived, and the real-time liquid phase target resource concentration as a variable is substituted into the target calculation formula to accurately obtain the real-time gas-liquid conversion index value at the current moment.

[0025] Furthermore, the step of comparing the real-time gas-liquid conversion index value with a preset index value to obtain a comparison result includes:

[0026] Obtain the preset threshold range corresponding to the preset index value;

[0027] The preset threshold range is compared with the real-time gas-liquid conversion index value to obtain a comparison result, which represents the magnitude relationship between the real-time gas-liquid conversion index value and the preset threshold range.

[0028] The beneficial effect of adopting the above-mentioned further scheme is that by determining whether the obtained real-time gas-liquid conversion index value is within the preset threshold range corresponding to the preset index value, the comparison result between the preset threshold range and the real-time gas-liquid conversion index value is obtained, and the method of adaptively controlling the operating frequency of the stirring device of the fully mixed anaerobic reactor is determined based on the comparison result.

[0029] Furthermore, the adjustment of the operating frequency of the stirring device in the fully mixed anaerobic reactor based on the comparison results includes:

[0030] If the comparison result indicates that the real-time gas-liquid conversion index value is within the preset threshold range, then the historical gas-liquid conversion index value is obtained.

[0031] Based on the historical gas-liquid conversion index value and the real-time gas-liquid conversion index value, the real-time rate of change of the gas-liquid conversion index value is obtained.

[0032] If the real-time rate of change is greater than the preset rate of change, the operating frequency of the stirring device of the fully mixed anaerobic reactor is increased according to the preset control value.

[0033] If the real-time rate of change is less than or equal to the preset rate of change, the operating frequency of the stirring device of the fully mixed anaerobic reactor is reduced according to the preset control value.

[0034] The beneficial effect of adopting the above-mentioned further scheme is that, when the real-time gas-liquid conversion index value is determined to be within the preset threshold range, the real-time change rate value of the gas-liquid conversion index value is obtained by combining the historical gas-liquid conversion index value, and different control methods are adopted for different change trends, so as to achieve precise control of the operating frequency of the stirring device of the fully mixed anaerobic reactor.

[0035] Furthermore, the adjustment of the operating frequency of the stirring device in the fully mixed anaerobic reactor based on the comparison results includes:

[0036] If the comparison result indicates that the real-time gas-liquid conversion index value is less than the preset threshold range, then the operating frequency of the stirring device of the fully mixed anaerobic reactor is adjusted to the first frequency, where the first frequency is the minimum operating frequency configured for the stirring device of the fully mixed anaerobic reactor.

[0037] If the comparison result indicates that the real-time gas-liquid conversion index value is greater than the preset threshold range, then the stirring device of the fully mixed anaerobic reactor is adjusted to the second frequency, which is the operating frequency under standard conditions.

[0038] The beneficial effect of adopting the above-mentioned further solution is that when it is determined that the real-time gas-liquid conversion index value is not within the preset threshold range, the operating frequency is adjusted to the corresponding frequency to ensure the safe operation of the stirring device of the fully mixed anaerobic reactor and avoid performance damage.

[0039] Secondly, the present invention provides an intelligent control system for a stirring device of a fully mixed anaerobic reactor, including an acquisition unit, a processing unit, a comparison unit, and a control unit;

[0040] The acquisition unit is used to acquire the mapping relationship between the liquid phase target resource concentration and time in the stirring device of the fully mixed anaerobic reactor, and to determine the real-time liquid phase target resource concentration based on the mapping relationship between the liquid phase target resource concentration and time.

[0041] The processing unit is used to obtain the real-time gas-liquid conversion index value of the target resource based on the real-time liquid phase target resource concentration using an anaerobic digestion model;

[0042] The comparison unit is used to compare the real-time gas-liquid conversion index value with the preset index value to obtain the comparison result.

[0043] The control unit is used to control the operating frequency of the stirring device of the fully mixed anaerobic reactor based on the comparison results.

[0044] The beneficial effects of the intelligent control system for the stirring device of the fully mixed anaerobic reactor provided by the present invention are as follows: by using the relationship between the real-time gas-liquid conversion index value obtained by the anaerobic digestion model and the preset index value, the operating frequency of the stirring device is flexibly adjusted, so that the operating frequency of the stirring device motor matches the stirring requirements of gas-liquid separation, realizing the frequency conversion control of the stirring device motor, thereby accelerating gas-liquid separation, improving the efficiency of anaerobic reaction in producing target resources, and optimizing motor performance.

[0045] Thirdly, the present invention also provides an electronic device, including one or more processors; and a storage device for storing one or more programs, which, when executed by the one or more processors, enable the electronic device to implement the intelligent control method for the stirring device of the fully mixed anaerobic reactor as described above.

[0046] Fourthly, the present invention also provides a computer-readable storage medium storing computer-readable instructions thereon, which, when executed by a computer processor, cause the computer to perform the intelligent control method for the stirring device of the fully mixed anaerobic reactor as described above.

[0047] Fifthly, the present invention also provides a computer program product or computer program including computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the intelligent control method for the stirring device of the fully mixed anaerobic reactor provided in the various alternative embodiments described above. Attached Figure Description

[0048] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0049] Figure 1 This is a schematic diagram of one implementation environment involved in this application;

[0050] Figure 2 This is a flowchart illustrating an exemplary embodiment of the present application of an intelligent control method for a stirring device in a fully mixed anaerobic reactor;

[0051] Figure 3 yes Figure 2 A flowchart of step S201 in the illustrated embodiment, which involves obtaining the mapping relationship between the liquid phase target resource concentration and time within the stirring device of the fully mixed anaerobic reactor, is provided in an exemplary embodiment.

[0052] Figure 4 yes Figure 2 A flowchart of step S202 in an exemplary embodiment shown in the illustrated example;

[0053] Figure 5 yes Figure 4 A flowchart of step S402 in an exemplary embodiment shown in the illustrated example;

[0054] Figure 6 yes Figure 2 A flowchart of step S203 in an exemplary embodiment shown in the illustrated example;

[0055] Figure 7 yes Figure 6 The flowchart of the steps for regulating the operating frequency of the stirring device of the fully mixed anaerobic reactor when the comparison result characterizes the real-time gas-liquid conversion index value within the preset threshold range is shown in an exemplary embodiment.

[0056] Figure 8 yes Figure 6 The flowchart in the illustrated embodiment is a step of regulating the operating frequency of the stirring device of the fully mixed anaerobic reactor when the real-time gas-liquid conversion index value is not within the preset threshold range.

[0057] Figure 9 This is a block diagram illustrating an intelligent control system 900 for a stirring device in a fully mixed anaerobic reactor, as shown in an exemplary embodiment of this application.

[0058] Figure 10 This is a schematic diagram of the structure of a computer system suitable for implementing the electronic devices of the present application embodiments. Detailed Implementation

[0059] The principles and features of the present invention are described below, with examples illustrated in the accompanying drawings. These examples are for illustrative purposes only and are not intended to limit the scope of the invention. In the following description relating to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0060] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0061] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0062] In this application, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0063] Among related technologies, anaerobic fermentation technology is a process in which anaerobic microorganisms grow and multiply by degrading organic matter under oxygen-free conditions, while producing biogas. As a renewable energy project, the biogas produced can be used directly for power generation or purified to generate biomethane.

[0064] Currently, commonly used anaerobic digesters for biogas production are typically total mixed reactors (TMRs), employing a sequencing batch reactor (SBR) feeding method (e.g., feeding once daily or once per shift) and using mechanical agitators to meet the requirements of total mixing. They are widely used in the treatment of straw, manure, sludge, and kitchen waste. However, in practical engineering applications, to achieve high torque at a lower speed during the start-up phase, ensuring safe startup and preventing problems such as shaft breakage due to excessive resistance, motor burnout due to overload, and impact on the tank from excessively high injection pressure during start-up, the motor powering the mechanical agitator is usually a variable frequency motor. After startup, it maintains a constant frequency. However, with SBR feeding, the biogas production rate (biogas flow rate) is not constant, and a constant agitation method cannot meet the energy consumption requirements of different reaction stages in anaerobic fermentation, resulting in high energy consumption and no improvement in efficiency.

[0065] To address the above-mentioned problems, embodiments of this application propose an intelligent control method and system for a stirring device of a fully mixed anaerobic reactor, as well as electronic devices and computer-readable storage media. These mainly involve character recognition technology based on machine vision, which is included in artificial intelligence technology. These embodiments will be described in detail below.

[0066] Please refer to the following first. Figure 1 , Figure 1 This is a schematic diagram of an implementation environment related to this application. The implementation environment includes a stirring device 101 for a fully mixed anaerobic reactor and a server 102, which communicate with each other via a wired or wireless network.

[0067] Server 102 is used to acquire the mapping relationship between the liquid phase target resource concentration and time within the stirring device 101 of the fully mixed anaerobic reactor, and to determine the real-time liquid phase target resource concentration based on this mapping relationship. It then uses an anaerobic digestion model to acquire the real-time gas-liquid conversion index value of the target resource based on the real-time liquid phase target resource concentration. The real-time gas-liquid conversion index value is compared with a preset index value to obtain a comparison result. Finally, the operating frequency of the stirring device 101 of the fully mixed anaerobic reactor is adjusted based on the comparison result. Compared with the existing control schemes for fully mixed anaerobic reactors, the intelligent control method provided in this implementation environment can improve the gas-liquid conversion efficiency of the target resource.

[0068] It should be noted that, Figure 1The server 102 in the implementation environment shown can be a standalone server or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, content delivery networks (CDN), and big data and artificial intelligence platforms. It serves as an edge device of the mixing device 101 of the fully mixed anaerobic reactor, providing computing power and control functions. No restrictions are imposed here.

[0069] Figure 2 This is a flowchart illustrating an exemplary embodiment of the intelligent control method for a stirring device in a fully mixed anaerobic reactor, as shown in this application. This method can be applied to... Figure 1 The implementation environment shown, and by Figure 1 The method is specifically executed by server 20 in the illustrated embodiment environment. However, in other implementation environments, this method can be executed by devices in those environments, and this embodiment does not impose any limitations on this.

[0070] like Figure 2 As shown in an exemplary embodiment, the intelligent control method for the stirring device of the fully mixed anaerobic reactor may include steps S201 to S204, which are described in detail below:

[0071] Step S201: Obtain the mapping relationship between the liquid phase target resource concentration and time in the stirring device of the fully mixed anaerobic reactor, and determine the real-time liquid phase target resource concentration based on the mapping relationship between the liquid phase target resource concentration and time.

[0072] The mapping relationship between the liquid phase target resource concentration and time within the stirred device of the fully mixed anaerobic reactor reflects the predicted relationship between the concentration change of the target resource within the reactor and time under the current external environment and the internal environment of the fully mixed anaerobic reactor. Based on this, after obtaining the mapping relationship between the liquid phase target resource concentration and time within the stirred device of the fully mixed anaerobic reactor, the liquid phase target resource concentration corresponding to any time represented by this mapping relationship can be obtained. In the embodiments provided in this application, in order to efficiently control the operating frequency of the stirred device of the fully mixed anaerobic reactor in real time, the real-time liquid phase target resource concentration corresponding to the current time is determined based on the mapping relationship between the liquid phase target resource concentration and time.

[0073] It should be noted that in the embodiments provided in this application, the target resource can be at least one of methane and carbon dioxide contained in the biogas produced by anaerobic fermentation, without specific limitations. For ease of explanation, the target resource mentioned below refers to methane.

[0074] Step S202: Use an anaerobic digestion model to obtain the real-time gas-liquid conversion index value of the target resource based on the real-time liquid phase target resource concentration.

[0075] Preferably, this embodiment pre-configures an anaerobic digestion model (ADM). This model can effectively reflect the dynamic process of anaerobic biological treatment, thus better simulating and predicting the operating effects of different anaerobic processes under different operating conditions, such as the gas yield of the target resource, the chemical oxygen demand of the effluent, VFA (volatile fatty acids), and the pH value in the reactor, as well as other data related to the target resource. Furthermore, the anaerobic digestion model has good scalability and provides an open, general-purpose modeling platform. Therefore, this embodiment constructs a gas-liquid conversion model for the target resource using the anaerobic digestion model. After obtaining the real-time liquid phase target resource concentration based on the mapping relationship, the gas-liquid conversion model is used to obtain a real-time gas-liquid conversion index value representing the target resource's ability to convert from the liquid phase to the gas phase, based on the real-time liquid phase target resource concentration.

[0076] Step S203: Compare the real-time gas-liquid conversion index value with the preset index value to obtain the comparison result.

[0077] In this embodiment, the preset index value represents the expected gas-liquid conversion index value of the target resource of the stirring device motor under standard operating conditions. The real-time gas-liquid conversion index value is compared with the preset index value to obtain the comparison result representing the magnitude relationship between the real-time gas-liquid conversion index value and the preset index value, thereby determining the control method adapted to the real-time gas-liquid conversion index value.

[0078] Step S204: Adjust the operating frequency of the stirring device of the fully mixed anaerobic reactor based on the comparison results.

[0079] Based on the comparison between the obtained real-time gas-liquid conversion index value and the preset index value, the motor operating frequency of the stirring device of the fully mixed anaerobic reactor is dynamically adjusted through an appropriate control method. This ensures that the motor operating frequency of the stirring device matches the real-time gas-liquid conversion index, thus avoiding resource waste caused by insufficient mixing of materials or oversaturation of the motor operating frequency.

[0080] As can be seen from the above, in the method provided in this embodiment, by obtaining the mapping relationship between the liquid phase target resource concentration and time, the real-time liquid phase target resource concentration at each moment can be quickly obtained, thereby improving the control efficiency of adaptive control of the operating frequency of the stirring device for the fully mixed anaerobic reactor. Furthermore, this application utilizes an anaerobic digestion model to obtain the real-time gas-liquid conversion index value corresponding to the real-time liquid phase target resource concentration. The gas-liquid conversion index value represents the target resource's ability to convert from liquid to gas phase. Then, by flexibly controlling the operating frequency of the stirring device through the relationship between the real-time gas-liquid conversion index value and the preset index value, the stirring energy consumption requirement corresponding to the real-time gas-liquid conversion index value is met, improving the gas-liquid conversion efficiency of the target resource and optimizing the motor performance of the stirring device in the fully mixed anaerobic reactor.

[0081] Please see Figure 3 , Figure 3 yes Figure 2 The step S201 in the illustrated embodiment, which involves obtaining the mapping relationship between the target liquid phase resource concentration and time within the stirring device of the fully mixed anaerobic reactor, is shown in a flowchart of an exemplary embodiment. (See flowchart for example.) Figure 3 As shown, it may specifically include steps S301 to S302, which are described in detail below:

[0082] Step S301: Obtain the measured target resource output potential.

[0083] In anaerobic fermentation, the biochemical methane potential (BMP) of the anaerobic fermentation feedstock can be tested experimentally. The BMP test determines the final target resource quantity that the organic matrix can produce, providing an indication of its biodegradability and its potential to produce methane through anaerobic digestion. Therefore, in this embodiment, a BMP test experiment was conducted by sampling materials within a fully mixed anaerobic reactor to obtain experimental results reflecting the methane production pattern. These results were then mapped onto the anaerobic fermentation reaction within the fully mixed anaerobic reactor to determine the methane production potential within the reactor, i.e., the production potential of the target resource.

[0084] Step S302: Based on the target resource output potential, obtain the mapping relationship between the concentration of the liquid phase target resource and time.

[0085] BMP testing is a periodic test. Therefore, within the reading period of BMP testing, the mapping relationship between the concentration of the target liquid phase resource and time can be obtained based on the output pattern and output potential of the target resource. In other words, a time mapping function of liquid phase methane concentration can be established to obtain the liquid phase methane concentration in the CSTR reactor at any time.

[0086] Preferably, if the number of daily feeds is n, then at any given time... Using time t1 as the BMP test step, the methane concentration in the anaerobic digestion liquid phase ( The mapping function is established as follows:

[0087]

[0088] in, Characterized by the concentration of liquid methane in the total mixed anaerobic reactor at time t1, in kgCOD / m³ 3 ; Characterized as CSTR liquid volume, in m³ 3 ; Characterized by daily feed rate, in m³ 3 ; Characterized by the concentration of volatile solids in the material; Characterized as experimental values ​​of material methane potential calculated in VS, kgCOD / kgVS; Characterized as methane production over a BMP test step time, in m³. 3 ; 1 represents the step time, which is equal to the reading period of the BMP test.

[0089] This embodiment establishes a mapping relationship between the concentration of the target liquid resource and time during the BMP testing process to determine the production potential of the target resource. This mapping relationship allows for the rapid clarification of the constantly changing production capacity of the target resource, thereby improving the efficiency of adaptive control of the operating frequency of the stirring device in a fully mixed anaerobic reactor.

[0090] Please see Figure 4 , Figure 4 yes Figure 2 The flowchart of step S202 in the illustrated embodiment is shown in an exemplary embodiment. For example... Figure 4 As shown, step S202 may specifically include steps S401 to S402, which are described in detail below:

[0091] Step S401: Obtain gas-liquid conversion data using an anaerobic digestion model.

[0092] Anaerobic digestion models can effectively simulate and predict the operational effects of different anaerobic processes under various operating conditions. They can acquire various data related to the target resource online as gas-liquid conversion data, such as the gas phase target resource concentration, gas phase target resource flow rate, specific mass transfer rate of the gas phase target resource, gas phase target resource partial pressure, and other data related to anaerobic reactions, as well as various environmental data affecting anaerobic reactions, such as the volume, volume, and temperature of the gas chamber in the fully mixed anaerobic reactor.

[0093] Step S402: Obtain the real-time gas-liquid conversion index value of the target resource based on the gas-liquid conversion data and the real-time liquid phase target resource concentration.

[0094] Based on the reaction principle of material concentration balance, the relationship between the obtained gas-liquid conversion data and the real-time liquid phase target resource concentration can reflect the target resource's ability to convert from liquid phase to gas phase, thereby obtaining the real-time gas-liquid conversion index value, which is characterized as the product of the total mass transfer coefficient and the specific transfer area of ​​the anaerobic digestion liquid.

[0095] In this embodiment, the general anaerobic digestion model of anaerobic fermentation reaction is used to obtain various data related to the target resource during the total mixed anaerobic reaction as gas-liquid conversion data. Based on the real-time liquid phase target resource concentration and gas-liquid conversion data, the real-time gas-liquid conversion index value of the target resource is calculated, which further improves the rate of determining the dynamic output capacity of the target resource.

[0096] Please see Figure 5 , Figure 5 yes Figure 4 The flowchart of step S402 in the illustrated embodiment is shown in an exemplary embodiment. Figure 5 As shown, step S402 may specifically include steps S501 to S502, which are described in detail below:

[0097] Step S501: Construct a target calculation formula for the gas-liquid conversion index value of the target resource based on the gas-liquid conversion data.

[0098] Since the relationship between gas-liquid conversion data and real-time liquid phase target resource concentration can reflect the target resource's ability to convert from liquid to gas phase, a relationship can be established between gas-liquid conversion data and gas-liquid conversion index values, with liquid phase target resource concentration as a variable. Therefore, in this embodiment, the differential equation for the gas phase target resource, i.e., gaseous methane, can be derived from the gas phase differential equation under constant gas volume based on the gas-liquid conversion data. Then, the mass flow rate is expressed as a combination of driving force and rate equations to obtain the specific mass transfer rate of methane gas under a certain unit liquid volume. Finally, the methane kinetic equation containing the specific mass transfer rate is combined with the gas differential equation, and after transformation, the liquid-liquid conversion index value is obtained (…). The target calculation formula within the BMP test step period.

[0099] Preferably, in the anaerobic digestion model, the gas-phase equation is similar to the liquid-phase equation, established based on material concentration balance and the rate of material formation. However, the gas equation does not include advection inflow, only dynamic components. From the gas-phase differential equation under constant gas volume, the differential equation for methane gas can be obtained as follows:

[0100]

[0101] in Characterized as gaseous methane concentration, in units of kgCOD / m³ 3 ; Characterized as the flow rate of gaseous methane; Characterized as the volume of the gas chamber in a fully mixed anaerobic reactor, in m³. 3 ; Characterized as the volume of the liquid portion of a fully mixed anaerobic reactor, in cubic meters (m³). 3 ; Characterized as the specific mass transfer rate of methane gas.

[0102] Then, by expressing the mass flow rate as a combination of the driving force and the rate equation, the specific mass transfer rate of methane gas under a certain unit liquid volume is obtained as follows:

[0103]

[0104] in, Characterized as the product of the total mass transfer coefficient and the specific transfer area (d -1 ), gas-liquid conversion index value; Characterized as liquid-phase methane concentration; Henry's Law coefficient (the solubility of a gas in a liquid at a given temperature and equilibrium state) for methane gas is a fixed value; Characterized by the partial pressure of methane gas.

[0105] Since the pressure of each gas component can be calculated using the ideal gas law, the partial pressure of methane is:

[0106]

[0107] Transforming the above formula (3), we obtain the following formula:

[0108]

[0109] Substituting formulas (3) and (4) into formula (1), we obtain the following formula:

[0110]

[0111] Where 64 is the methane mass concentration conversion factor; Characterizing the coefficients of the ideal gas equation; Characterizes the temperature of the gas chamber.

[0112] Based on the above series of calculation derivations, the differential equation for the concentration of gaseous methane, represented by the final calculation formula (5), can be transformed into the differential equation for the concentration of gaseous methane. The target calculation formula within a fixed step size period.

[0113] Step S502: Obtain the real-time gas-liquid conversion index value based on the target calculation formula and the real-time liquid phase target resource concentration.

[0114] In this embodiment, the input variables in the derived target calculation formula are all dynamic indicators and static constants that can be monitored online by the anaerobic digestion model, as well as the real-time liquid phase target resource concentration determined based on the mapping relationship between liquid phase target resource concentration and time, thereby realizing the calculation of gas-liquid conversion index values. Explicit computation.

[0115] Thus, this embodiment derives a target calculation formula for the gas-liquid conversion index value of the target resource based on the gas-liquid conversion data collected by the anaerobic digestion model. The real-time liquid phase target resource concentration, as a variable, is substituted into the target calculation formula to accurately obtain the real-time gas-liquid conversion index value at the current moment.

[0116] Please see Figure 6 , Figure 6 yes Figure 2 The flowchart of step S203 in the illustrated embodiment is shown in an exemplary embodiment. Figure 6 As shown, step S203 may specifically include steps S601 to S602, which are described in detail below:

[0117] Step S601: Obtain the preset threshold range corresponding to the preset indicator value.

[0118] In this embodiment, to achieve flexible control of the operating frequency of the stirring device, the preset index value used for comparison with the real-time gas-liquid conversion index value is configured with a preset threshold range. For example, the preset index value is configured with a preset threshold range. As a preset indicator value, and As The upper and lower fluctuation range, thus obtaining the target The preset threshold range is set to [kb, k+b].

[0119] Step S602: Compare the preset threshold range with the real-time gas-liquid conversion index value to obtain the comparison result, which represents the relationship between the real-time gas-liquid conversion index value and the preset threshold range.

[0120] The preset threshold range is compared with the real-time gas-liquid conversion index value to obtain the comparison result. The comparison result represents the relationship between the real-time gas-liquid conversion index value and the preset threshold range, that is, it can determine whether the real-time gas-liquid conversion index value is within the preset threshold range.

[0121] Based on the content represented by the comparison results, the operating frequency of the stirring device corresponding to the real-time gas-liquid conversion index value within the preset threshold range and the operating frequency of the stirring device corresponding to the real-time gas-liquid conversion index value outside the preset threshold range are respectively controlled by their respective control methods.

[0122] Thus, in this embodiment, by determining whether the obtained real-time gas-liquid conversion index value is within the preset threshold range corresponding to the preset index value, a comparison result between the preset threshold range and the real-time gas-liquid conversion index value is obtained, and based on the comparison result, a method for adaptively controlling the operating frequency of the stirring device of the fully mixed anaerobic reactor is determined.

[0123] In another exemplary embodiment, after determining the relationship between the preset threshold range characterized by the comparison results and the real-time gas-liquid conversion index value, the operating frequency of the stirring device of the fully mixed anaerobic reactor is adaptively adjusted. Please refer to [link to relevant documentation]. Figure 7 , Figure 7 yes Figure 6 The flowchart in the illustrated embodiment shows the steps of regulating the operating frequency of the stirring device in a fully mixed anaerobic reactor when the comparison results characterize the real-time gas-liquid conversion index value within a preset threshold range. (See the flowchart in the illustrated embodiment.) Figure 7 As shown, it may specifically include steps S701 to S704, which are described in detail below:

[0124] Step S701: If the comparison result indicates that the real-time gas-liquid conversion index value is within the preset threshold range, then obtain the historical gas-liquid conversion index value.

[0125] If the comparison result indicates that the real-time gas-liquid conversion index value is within the preset threshold range, it means that the target resource's ability to convert from liquid phase to gas phase is within a controllable range. In order to adaptively regulate the operating frequency of the stirring device, the intelligent control method provided in this embodiment needs to detect the changing trend of the gas-liquid conversion index value of the target resource within its detection period, so as to obtain the influence of the operating frequency of the stirring device on the gas-liquid conversion index value of the target resource, and then determine the regulation method of the operating frequency based on the changing trend. Therefore, after determining that the comparison result indicates that the real-time gas-liquid conversion index value is within the preset threshold range, the historical gas-liquid conversion index value within the detection period is obtained, and the changing trend of the gas-liquid conversion index value is obtained based on the historical gas-liquid conversion index value and the current real-time gas-liquid conversion index value.

[0126] Step S702: Obtain the real-time rate of change of the gas-liquid conversion index value based on the historical gas-liquid conversion index value and the real-time gas-liquid conversion index value.

[0127] In this embodiment, the trend of the gas-liquid conversion index value is fitted by the least squares method, and the real-time rate of change is obtained by taking the derivative.

[0128] Step S703: If the real-time rate of change is greater than the preset rate of change, the operating frequency of the stirring device of the fully mixed anaerobic reactor is increased according to the preset control value.

[0129] The real-time rate of change is compared with the preset rate of change. If the real-time rate of change is greater than the preset rate of change, it indicates that the gas-liquid conversion index of the target resource is trending upward, that is, the ability of the target resource to convert from liquid phase to gas phase is gradually increasing. However, the constant motor operating frequency cannot meet the stirring requirements of the material. Therefore, in this embodiment, after determining that the real-time rate of change is greater than the preset rate of change, the operating frequency of the stirring device of the fully mixed anaerobic reactor is increased according to the preset control value.

[0130] In the embodiments provided in this application, the default operating frequency of the variable frequency motor of the stirring device under standard operating conditions is expressed as: And a threshold range is set. Minimum operating frequency The materials in the fully mixed anaerobic reactor should be kept in a completely mixed state to ensure that solids do not settle within the reactor; the maximum operating frequency should be [not specified]. It should not exceed the maximum operating frequency allowed by the electrical system design. Thus, assuming a preset threshold range of [kb, k+b], if... And gas-liquid conversion index value When the price changes upward, adjust according to the preset control value. The adjustment range increases the operating frequency to enhance the excitation. If the change is trending upwards, then continue according to... The adjustment range increases the operating frequency until the ( The highest frequency value.

[0131] It should be noted that the embodiments provided in this application do not impose specific restrictions on the preset rate of change value. As long as the value is greater than the preset rate of change value, it can be reflected that the gas-liquid conversion index value tends to increase, and vice versa.

[0132] Step S704: If the real-time rate of change is less than or equal to the preset rate of change, the operating frequency of the stirring device of the fully mixed anaerobic reactor is reduced according to the preset control value.

[0133] If the real-time rate of change is less than the preset rate of change, it indicates that the gas-liquid conversion index of the target resource is decreasing, meaning that the target resource's ability to convert from liquid to gas phase is gradually decreasing. When it equals the preset rate of change, it indicates that there is no change. Since the constant motor operating frequency cannot meet the stirring requirements of the material, this embodiment determines that after the real-time rate of change is less than or equal to the preset rate of change, the operating frequency of the stirring device of the fully mixed anaerobic reactor is reduced according to the preset control value.

[0134] In this embodiment, given a preset threshold range of [kb, k+b], if the real-time rate of change is less than or equal to the preset rate of change, that is... When the trend remains unchanged or tends to decrease, then proceed as follows: The adjustment range reduces the operating frequency until the ( The minimum frequency value.

[0135] It should be noted that, in order to ensure the performance of the stirring device's motor, the number of times the operating frequency is adjusted needs to be limited. The maximum number of net frequency increases is m times, and the maximum number of net frequency decreases is n times, which must satisfy ( , ( The specific values ​​of m and n can be set according to the requirements and motor performance, and are not restricted here.

[0136] In another exemplary embodiment, the comparison result indicates that the real-time gas-liquid conversion index value is outside the preset threshold range. Please refer to [link to relevant documentation]. Figure 8 , Figure 8 yes Figure 6 The flowchart in the illustrated embodiment shows the steps for regulating the operating frequency of the stirring device in a fully mixed anaerobic reactor when the real-time gas-liquid conversion index value is not within a preset threshold range. (See the flowchart for an exemplary embodiment.) Figure 8 As shown, it may specifically include steps S801 to S802, which are described in detail below:

[0137] Step S801: If the comparison result indicates that the real-time gas-liquid conversion index value is less than the preset threshold range, then the operating frequency of the stirring device of the fully mixed anaerobic reactor is adjusted to the first frequency, which is the minimum operating frequency configured for the stirring device of the fully mixed anaerobic reactor.

[0138] If the comparison result indicates that the real-time gas-liquid conversion index value is less than the preset threshold range, it means that the gas-liquid conversion capacity of the target resource in the fully mixed anaerobic reactor is quite low. Therefore, it is only necessary to maintain the most basic operation of the stirring device's motor to avoid wasting motor resources. In this embodiment, the operating frequency of the stirring device of the fully mixed anaerobic reactor is adjusted to a first frequency, which is the minimum operating frequency configured for the stirring device of the fully mixed anaerobic reactor. For example, under the premise that the preset threshold range is [kb, k+b], when At that time, the variable frequency motor operates at the minimum frequency. run.

[0139] Step S802: If the comparison result indicates that the real-time gas-liquid conversion index value is greater than the preset threshold range, then the stirring device of the fully mixed anaerobic reactor is adjusted to the second frequency, which is the operating frequency under standard conditions.

[0140] If the comparison result indicates that the real-time gas-liquid conversion index value is greater than the preset threshold range, it means that the calculated real-time gas-liquid conversion index value exceeds the controllable range, and the highest allowed operating frequency of the electrical system cannot meet the material stirring requirements corresponding to the real-time gas-liquid conversion index value. Therefore, in this embodiment, the stirring device of the fully mixed anaerobic reactor is adjusted to a second frequency, which is the operating frequency under standard conditions. For example, under the premise that the preset threshold range is [kb, k+b], when At this time, the variable frequency motor operates at the default frequency under standard operating conditions or at an appropriate reduced frequency, avoiding the situation where the motor's operating frequency is increased due to incorrect test results, which would damage the performance of the variable frequency motor. It can even appropriately reduce the operating frequency of the stirring device of the fully mixed anaerobic reactor as needed.

[0141] As can be seen from the above embodiments, in the method provided, when the real-time gas-liquid conversion index value is determined to be within a preset threshold range, the real-time rate of change of the gas-liquid conversion index value is obtained by combining historical gas-liquid conversion index values. Different control methods are adopted for different trends to achieve precise control of the operating frequency of the stirring device of the fully mixed anaerobic reactor. When the real-time gas-liquid conversion index value is determined to be outside the preset threshold range, the operating frequency is adjusted to the corresponding frequency to ensure the safe operation of the stirring device of the fully mixed anaerobic reactor and avoid performance damage.

[0142] In an exemplary embodiment of this application, the operating frequency of the variable frequency motor is adjusted by the intelligent control method of the stirring device of the fully mixed anaerobic reactor provided in this application, and various data after the anaerobic reaction rate is improved are obtained. These data are then compared with the various data of the anaerobic reaction before the implementation of the intelligent control method provided in this application. This demonstrates that the intelligent control method of the stirring device of the mixed anaerobic reactor provided in this application can accelerate gas-liquid separation, improve the efficiency of anaerobic reaction in producing target resources, and optimize motor performance.

[0143] In this embodiment, the anaerobic fermentation reactor used is a 1005L CSTR reactor. The fermentation feedstock is a mixture of kitchen waste and dewatered sludge from a municipal wastewater treatment plant, with a mass ratio of 1:1. The total saturation (TS) of the digestate is 8%-10%, and the fermentation temperature is 35℃. The reactor stirring device is a double-layer paddle mechanical stirrer with a variable frequency motor power of 1.5kW. The stirrer frequency adjustment range is 1-50Hz, and the designed operating frequency is 15Hz. The stirring device operates 24 / 7, with a theoretical daily power consumption of 10.8kWh.

[0144] The pilot-scale unit includes a kitchen waste pulverizer. The pulverized kitchen waste has a particle size of <3mm. After being mixed with dewatered sludge, water is added in a homogenizing tank to adjust the slurry, maintaining a solids content of 10%-12%. The mixed material is then pumped into the CSTR reactor, with a feed rate of 50kg per day. The CSTR reactor tank and biogas pipeline are equipped with online instruments such as temperature, pH, flow rate, and biogas component analyzers.

[0145] A server containing the intelligent control method for the mixing anaerobic reactor stirring device provided in this application is installed in the control room. The server collects data from online sensors and analyzers such as gas chamber temperature, gas chamber pressure, biogas flow rate, and methane composition. After real-time calculation by the server, the server outputs frequency conversion control commands to the frequency converter controller of the stirring device's motor, thereby achieving adaptive control for the operating frequency.

[0146] In order to compare the data obtained after the anaerobic reaction rate was improved by regulating the operating frequency of the variable frequency motor using the intelligent control method of the stirring device of the fully mixed anaerobic reactor provided in this application with the data of the anaerobic reaction before the implementation of the intelligent control method provided in this application, in the first stage, the CSTR anaerobic fermentation was kept stable for no less than one week under normal conditions, with 50 kg of the same material fed every day, and the stirring frequency was kept stable at 15 Hz. The average kla value was measured to be 159 d. -1 The volumetric gas production rate is 0.943 m³. 3 / m 3 .d.

[0147] Table 1 below shows the operating parameters and fermentation efficiency parameters for each stage of operation. It can be seen that after one week, the second stage begins, implementing the intelligent control method for the mixing anaerobic reactor stirring device provided in this application. The measured kla value is 181d. -1 This represents a 13.8% increase compared to before regulation, with a volumetric gas production rate of 1.089 m³ / m³. 3 .d, compared to 0.943m before regulation 3 / m 3 The kla value increased by 15.48%; and after the intelligent control method of the stirring device of the fully mixed anaerobic reactor provided in this application was stopped in the third stage, when the speed of the stirrer was maintained at a constant 15Hz, the kla value decreased to 155d. -1 The volumetric gas production rate also decreased to 1.015 m³. 3 / m 3 The efficiency is still 2.5% higher than when the intelligent control method of the mixing anaerobic reactor stirring device provided in this application is not implemented. This is because the intelligent control method of the mixing anaerobic reactor stirring device provided in this application, which was implemented before this, still has a positive promoting effect on the anaerobic reaction in this stage.

[0148] Table 1. Operating parameters and fermentation efficiency parameters at each stage of operation.

[0149] Figure 9 This is a block diagram illustrating an intelligent control system 900 for a stirring device in a fully mixed anaerobic reactor, as shown in an exemplary embodiment of this application. Figure 9 As shown, the system includes:

[0150] The acquisition unit 901 is used to acquire the mapping relationship between the liquid phase target resource concentration and time in the stirring device of the fully mixed anaerobic reactor, and to determine the real-time liquid phase target resource concentration based on the mapping relationship between the liquid phase target resource concentration and time.

[0151] Processing unit 902 is used to obtain the real-time gas-liquid conversion index value of the target resource based on the real-time liquid phase target resource concentration using an anaerobic digestion model;

[0152] The comparison unit 903 is used to compare the real-time gas-liquid conversion index value with the preset index value to obtain the comparison result.

[0153] The control unit 904 is used to control the operating frequency of the stirring device of the fully mixed anaerobic reactor based on the comparison results.

[0154] This system applies the intelligent control method for the stirring device of the fully mixed anaerobic reactor provided in this application. By acquiring the mapping relationship between the liquid phase target resource concentration and time obtained by the acquisition unit 901, the real-time liquid phase target resource concentration at each moment can be quickly obtained, thereby improving the control efficiency of adaptive regulation of the operating frequency of the fully mixed anaerobic reactor stirring device. Furthermore, the processing unit 902 uses the anaerobic digestion model to obtain the real-time gas-liquid conversion index value corresponding to the real-time liquid phase target resource concentration. The gas-liquid conversion index value represents the ability of the target resource to convert from liquid phase to gas phase. Then, the control unit 904 flexibly adjusts the operating frequency of the stirring device by comparing the real-time gas-liquid conversion index value obtained by the comparison unit 903 with the preset index value, thereby meeting the stirring energy consumption requirements corresponding to the real-time gas-liquid conversion index value, improving the gas-liquid conversion efficiency of the target resource, and optimizing the motor performance of the fully mixed anaerobic reactor stirring device.

[0155] In another exemplary embodiment, the acquisition unit 901 is further configured to acquire the measured target resource output potential; and to obtain the mapping relationship between the liquid phase target resource concentration and time based on the target resource output potential.

[0156] In another exemplary embodiment, the processing unit 902 is further configured to acquire gas-liquid conversion data using an anaerobic digestion model; and to obtain a real-time gas-liquid conversion index value of the target resource based on the gas-liquid conversion data and the real-time liquid phase target resource concentration.

[0157] In another exemplary embodiment, the processing unit 902 is further configured to construct a target calculation formula for the gas-liquid conversion index value of the target resource based on the gas-liquid conversion data; and obtain the real-time gas-liquid conversion index value based on the target calculation formula and the real-time liquid phase target resource concentration.

[0158] In another exemplary embodiment, the comparison unit 903 is further configured to obtain a preset threshold range corresponding to a preset index value; compare the preset threshold range with the real-time gas-liquid conversion index value to obtain a comparison result, wherein the comparison result represents the size relationship between the real-time gas-liquid conversion index value and the preset threshold range.

[0159] In another exemplary embodiment, the control unit 904 is further configured to: obtain historical gas-liquid conversion index values ​​if the comparison result indicates that the real-time gas-liquid conversion index value is within a preset threshold range; obtain the real-time rate of change of the gas-liquid conversion index value based on the historical gas-liquid conversion index value and the real-time gas-liquid conversion index value; increase the operating frequency of the stirring device of the fully mixed anaerobic reactor according to a preset control value if the real-time rate of change is less than or equal to the preset rate of change; and decrease the operating frequency of the stirring device of the fully mixed anaerobic reactor according to a preset control value if the real-time rate of change is less than or equal to the preset rate of change.

[0160] In another exemplary embodiment, the control unit 904 is further configured to adjust the operating frequency of the stirring device of the fully mixed anaerobic reactor to a first frequency if the comparison result indicates that the real-time gas-liquid conversion index value is less than a preset threshold range, wherein the first frequency is the minimum operating frequency configured for the stirring device of the fully mixed anaerobic reactor; and to adjust the stirring device of the fully mixed anaerobic reactor to a second frequency if the comparison result indicates that the real-time gas-liquid conversion index value is greater than a preset threshold range, wherein the second frequency is the operating frequency under standard operating conditions.

[0161] It should be noted that the intelligent control system provided in the above embodiments and the intelligent control method for the stirring device of the fully mixed anaerobic reactor provided in the above embodiments belong to the same concept. The specific operation methods of each module and unit have been described in detail in the method embodiments and will not be repeated here. In practical applications, the intelligent control method system for the stirring device of the fully mixed anaerobic reactor provided in the above embodiments can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. This is not a limitation here.

[0162] Embodiments of this application also provide an electronic device, including: one or more processors; and a storage device for storing one or more programs, which, when executed by one or more processors, enable the electronic device to implement the intelligent control method for the stirring device of the fully mixed anaerobic reactor provided in the above embodiments.

[0163] Figure 10 A schematic diagram of a computer system suitable for implementing the embodiments of this application is shown. It should be noted that... Figure 10 The computer system 1000 of the electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0164] like Figure 10 As shown, the computer system 1000 includes a Central Processing Unit (CPU) 1001, which can perform various appropriate actions and processes, such as executing the methods described in the above embodiments, based on programs stored in Read-Only Memory (ROM) 1002 or programs loaded from storage portion 1008 into Random Access Memory (RAM) 1003. The RAM 1003 also stores various programs and data required for system operation. The CPU 1001, ROM 1002, and RAM 1003 are interconnected via a bus 1004. An Input / Output (I / O) interface 1005 is also connected to the bus 1004.

[0165] The following components are connected to I / O interface 1005: an input section 1006 including a keyboard, mouse, etc.; an output section 1007 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 1008 including a hard disk, etc.; and a communication section 1009 including a network interface card such as a LAN (Local Area Network) card, modem, etc. The communication section 1009 performs communication processing via a network such as the Internet. A drive 1010 is also connected to I / O interface 1005 as needed. Removable media 1011, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., are installed on drive 1010 as needed so that computer programs read from them can be installed into storage section 1008 as needed.

[0166] Specifically, according to embodiments of this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program including a computer program for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 1009, and / or installed from removable medium 1011. When the computer program is executed by central processing unit (CPU) 1001, it performs various functions defined in the system of this application.

[0167] It should be noted that the computer-readable medium shown in the embodiments of this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying a computer-readable computer program. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media can also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, etc., or any suitable combination thereof.

[0168] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. Each block in a flowchart or block diagram may represent a module, segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0169] The units described in the embodiments of this application can be implemented in software or hardware, and the described units can also be located in a processor. The names of these units do not necessarily limit the specific unit itself.

[0170] Another aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the intelligent control method for the stirring device of the fully mixed anaerobic reactor as described above. This computer-readable storage medium may be included in the electronic device described in the above embodiments, or it may exist independently and not incorporated into the electronic device.

[0171] Another aspect of this application provides a computer program product or computer program including computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the intelligent control method for the stirring device of the fully mixed anaerobic reactor provided in the various embodiments above.

[0172] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An intelligent control method for the stirring device of a fully mixed anaerobic reactor, characterized in that, The method includes: Obtain the mapping relationship between the liquid phase target resource concentration and time in the stirring device of the fully mixed anaerobic reactor, and determine the real-time liquid phase target resource concentration based on the mapping relationship between the liquid phase target resource concentration and time; The real-time gas-liquid conversion index value of the target resource is obtained based on the real-time liquid phase target resource concentration using an anaerobic digestion model; The real-time gas-liquid conversion index value is compared with the preset index value to obtain the comparison result; The operating frequency of the stirring device in the fully mixed anaerobic reactor is adjusted based on the comparison results.

2. The method according to claim 1, characterized in that, The process of obtaining the mapping relationship between the target liquid phase resource concentration and time within the stirred device of the fully mixed anaerobic reactor includes: Obtain the measured output potential of the target resources; Based on the target resource output potential, a mapping relationship between the concentration of the liquid phase target resource and time is obtained.

3. The method according to claim 1, characterized in that, The process of obtaining the real-time gas-liquid conversion index value of the target resource based on the real-time liquid phase target resource concentration using an anaerobic digestion model includes: Gas-liquid transition data were obtained using an anaerobic digestion model; The real-time gas-liquid conversion index value of the target resource is obtained based on the gas-liquid conversion data and the real-time liquid phase target resource concentration.

4. The method according to claim 3, characterized in that, The process of obtaining the gas-liquid conversion index value of the target resource at the current moment based on the gas-liquid conversion data and the real-time liquid phase target resource concentration includes: Based on the gas-liquid conversion data, a target calculation formula for the gas-liquid conversion index value of the target resource is constructed; The real-time gas-liquid conversion index value is obtained based on the target calculation formula and the real-time liquid phase target resource concentration.

5. The method according to any one of claims 1 to 4, characterized in that, The step of comparing the real-time gas-liquid conversion index value with a preset index value to obtain a comparison result includes: Obtain the preset threshold range corresponding to the preset index value; The preset threshold range is compared with the real-time gas-liquid conversion index value to obtain a comparison result, which represents the magnitude relationship between the real-time gas-liquid conversion index value and the preset threshold range.

6. The method according to claim 5, characterized in that, The adjustment of the operating frequency of the stirring device in the fully mixed anaerobic reactor based on the comparison results includes: If the comparison result indicates that the real-time gas-liquid conversion index value is within the preset threshold range, then the historical gas-liquid conversion index value is obtained. Based on the historical gas-liquid conversion index value and the real-time gas-liquid conversion index value, the real-time rate of change of the gas-liquid conversion index value is obtained. If the real-time rate of change is greater than the preset rate of change, the operating frequency of the stirring device of the fully mixed anaerobic reactor is increased according to the preset control value. If the real-time rate of change is less than or equal to the preset rate of change, the operating frequency of the stirring device of the fully mixed anaerobic reactor is reduced according to the preset control value.

7. The method according to claim 5, characterized in that, The adjustment of the operating frequency of the stirring device in the fully mixed anaerobic reactor based on the comparison results includes: If the comparison result indicates that the real-time gas-liquid conversion index value is less than the preset threshold range, then the operating frequency of the stirring device of the fully mixed anaerobic reactor is adjusted to the first frequency, where the first frequency is the minimum operating frequency configured for the stirring device of the fully mixed anaerobic reactor. If the comparison result indicates that the real-time gas-liquid conversion index value is greater than the preset threshold range, then the stirring device of the fully mixed anaerobic reactor is adjusted to the second frequency, which is the operating frequency under standard conditions.

8. An intelligent control system for the stirring device of a fully mixed anaerobic reactor, characterized in that, include: The acquisition unit is used to acquire the mapping relationship between the liquid phase target resource concentration and time in the stirring device of the fully mixed anaerobic reactor, and to determine the real-time liquid phase target resource concentration based on the mapping relationship between the liquid phase target resource concentration and time. The processing unit is used to obtain the real-time gas-liquid conversion index value of the target resource based on the real-time liquid phase target resource concentration using an anaerobic digestion model; The comparison unit is used to compare the real-time gas-liquid conversion index value with the preset index value to obtain the comparison result. The control unit is used to control the operating frequency of the stirring device of the fully mixed anaerobic reactor based on the comparison results.

9. An electronic device, characterized in that, include: One or more processors; A storage device for storing one or more programs, which, when executed by one or more processors, enable the electronic device to implement the intelligent control method for the stirring apparatus of the fully mixed anaerobic reactor as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, It stores computer-readable instructions, which, when executed by the computer's processor, cause the computer to perform the intelligent control method for the stirring device of the fully mixed anaerobic reactor as described in any one of claims 1 to 7.

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