Experimental system and method for determining the biodegradability of organic matter in industrial wastewater

Abstract

This application relates to an experimental system and method for determining the biodegradability of organic matter in industrial wastewater. During the wastewater biochemical process, the system characterizes the content of biodegradable organic matter in the wastewater by measuring the concentration changes of oxygen (oxygen consumption by aerobic processes), carbon dioxide (a product of microbial aerobic metabolism), and methane (a product of microbial anaerobic metabolism) in the reactor. This method can effectively assess the content of biodegradable organic matter in industrial wastewater, overcome microbial limitations, and eliminate the need to consider the toxic effects of high concentrations of fungicides, pesticides, free chlorine, and high concentrations of cyanide-containing wastewater on bacterial species in biofilms. Its application is broader.

Description

Technical Field

[0001] The present disclosure relates to the technical field of wastewater detection, and in particular to an experimental system, a measuring method and electronic equipment for determining the biodegradability of organic matter in industrial wastewater. Background Art

[0002] In aquatic environments, oxygen-consuming pollutants are a significant factor currently impacting water quality. Their primary hazard is the depletion of dissolved oxygen in the water, leading to deterioration in water quality. Due to the complex composition of organic matter in water, quantitative analysis of its content is difficult with existing technology, equipment, and financial resources. Using indicators such as biochemical oxygen demand (BOD), chemical oxygen demand (COD), total organic carbon (TOC), and total oxygen demand (TOD) to comprehensively reflect the degree of organic pollutant contamination will continue to be an important method in the detection field.

[0003] Biochemical oxygen demand (BOD) indicates the amount of organic matter that can be decomposed by microorganisms, that is, the dissolved oxygen consumed when organic matter in water decomposes. Since this indicator conforms to the actual situation of water self-purification and most sewage treatment technology process routes, the correct measurement of BOD is of greater significance to controlling water pollution.

[0004] The standard dilution method is currently the most commonly used method for determining BOD5, which refers to the amount of dissolved oxygen consumed after five days of incubation. A reasonable dilution ratio is the key to successfully determining BOD5. Excessive or insufficient oxygen consumption will affect the measurement results. According to practical experience, the BOD5 value of surface water is relatively low, and the dilution ratio is usually determined by the permanganate index value. For industrial wastewater, since the COD of industrial wastewater is often high and the composition is complex and contains many toxic components, the dilution ratio when determining BOD5 often reaches 1000 times (COD is about 3000-10000 mg / L), or even 10000 times (COD is about 30000-90000 mg / L) or more. Excessive dilution ratio will distort the measured BOD5 data, which is a defect that the standard dilution method for determining BOD cannot overcome.

[0005] To address the issue of lengthy BOD5 measurement times, a standard method for BOD microbial sensors was promulgated at the end of 2002. This method utilizes the interaction of microorganisms immobilized within the biofilm within the sensor with organic matter in water to determine BOD. However, this method only measures soluble, biodegradable organic matter in water samples, and the microorganisms used are limited. Furthermore, high concentrations of fungicides, pesticides, free chlorine, and high concentrations of cyanide-containing wastewater are toxic to the bacteria in the biofilm. Therefore, this method is unsuitable for BOD measurement in industrial wastewater. Furthermore, due to the complex maintenance and operation procedures of this equipment, only a few monitoring stations in China currently use this product for online BOD monitoring of low-concentration wastewater.

[0006] In summary, how to accurately measure the biodegradability of industrial wastewater is an urgent problem that needs to be solved in the field of wastewater pollution control. Summary of the Invention

[0007] In order to solve the above problems, the present application proposes an experimental system, a measurement method and an electronic device for determining the biodegradability of organic matter in industrial wastewater.

[0008] In one aspect, the present application provides an experimental system for determining the biodegradability of organic matter in industrial wastewater, comprising:

[0009] A biochemical reactor, used to carry out biochemical reactions of organic matter in the sampled industrial wastewater;

[0010] An oxygen detector is installed on the biochemical reactor to detect the oxygen concentration in the biochemical reactor: mol(O2) and to feed back the information to the host computer in real time;

[0011] A carbon dioxide detector is installed on the biochemical reactor to detect the carbon dioxide concentration in the biochemical reactor: mol(CO2) and provide real-time feedback to the host computer;

[0012] A methane detector is installed on the biochemical reactor to detect the methane concentration in the biochemical reactor: mol(CH4) and provide real-time feedback to the host computer;

[0013] The host computer is used to substitute the mol(O2), mol(CO2) and mol(CH4) obtained by real-time detection into the preset organic matter degradation amount evaluation formula, and evaluate and output the organic matter degradation amount K in real time;

[0014] The oxygen detector, carbon dioxide detector and methane detector are respectively connected to the host computer for communication.

[0015] As an optional implementation scheme of the present application, optionally, the oxygen detector, carbon dioxide detector and methane detector are all IoT detection devices, equipped with IoT communication modules;

[0016] The IoT communication module is used to transmit mol(O2), mol(CO2) or mol(CH4) obtained by real-time detection to the host computer;

[0017] The oxygen detector, carbon dioxide detector and methane detector are respectively connected to the host computer through the IoT communication modules configured therein.

[0018] As an optional implementation scheme of the present application, optionally, the IoT communication module supports the following communication modes:

[0019] WiFi, Bluetooth, 4 / 5G communication or NFC.

[0020] As an optional embodiment of the present application, optionally, the organic matter degradation amount evaluation formula is as follows:

[0021] K=K0*mol(O2) / (mol(CO2)+mol(CH4)),

[0022] Wherein, K0 is the default degradation amount of organic matter measured under the default molar ratio of oxygen, carbon dioxide and methane;

[0023] mol(O2) / ((mol(CO2)+mol(CH4)), which represents the ratio of oxygen concentration to the sum of carbon dioxide and methane concentrations, that is, the concentration ratio;

[0024] Under the default concentration ratio, mol(O2) / ((mol(CO2)+mol(CH4)) is a constant; when the concentration changes, the value of mol(O2) / (mol(CO2)+mol(CH4)) will change. Therefore, the content K of biodegradable organic matter in wastewater is evaluated by proportionally taking the value of K0 based on the concentration ratio of dynamic real-time changes in concentration: mol(oxygen) / (mol(CO2)+mol(CH4)).

[0025] As an optional embodiment of the present application, optionally, it further includes:

[0026] The magnetic stirring component is arranged on the biochemical reactor and is used for stirring the industrial wastewater in the biochemical reactor to accelerate the biochemical reaction of organic matter.

[0027] As an optional embodiment of the present application, optionally, the magnetic stirring assembly includes:

[0028] A magnetic motor is provided at the bottom of the biochemical reactor and is used for servo-driving the magnetic rotor;

[0029] A magnetic rotor is provided inside the biochemical reactor and is used for stirring;

[0030] A controller for servo-controlling the magnetic motor;

[0031] The magnetic rotor is installed at the end of the magnetic motor;

[0032] The magnetic motor is electrically connected to the controller;

[0033] The controller is communicatively connected to the host computer.

[0034] In another aspect, the present application proposes a measurement method, which is implemented based on the experimental system for determining the biodegradability of organic matter in industrial wastewater, and comprises the following steps:

[0035] Initialize the system and establish communication between the host computer and the oxygen detector, carbon dioxide detector, methane detector and magnetic motor;

[0036] The host computer sends control parameters to the controller, which controls the rotation of the magnetic motor to drive the magnetic rotor to stir the industrial wastewater on the biochemical reactor;

[0037] The oxygen detector detects the oxygen concentration value in the biochemical reactor: mol(O2) and feeds back to the host computer in real time;

[0038] The carbon dioxide detector detects the carbon dioxide concentration value in the biochemical reactor: mol(CO2) and feeds back to the host computer in real time;

[0039] The methane detector detects the methane concentration value in the biochemical reactor: mol(CH4) and feeds back to the host computer in real time;

[0040] The host computer substitutes the mol(O2), mol(CO2) and mol(CH4) obtained by real-time detection into the preset organic matter degradation evaluation formula, and evaluates and outputs the organic matter degradation amount in real time.

[0041] In another aspect, the present application further provides an electronic device, comprising:

[0042] processor;

[0043] a memory for storing processor-executable instructions;

[0044] The processor is configured to implement the measurement method when executing the executable instructions.

[0045] Technical effects of the present invention:

[0046] This application characterizes the content of biodegradable organic matter in wastewater by measuring the concentration changes of oxygen (oxygen consumption by aerobic processes), carbon dioxide (a product of microbial aerobic metabolism), and methane (a product of microbial anaerobic metabolism) in the reactor during the wastewater biochemical process. This method can achieve the effect of evaluating the content of biodegradable organic matter in industrial wastewater, overcome the limitations of microorganisms, and does not need to consider the toxic effects of high concentrations of fungicides, pesticides, free chlorine, and high concentrations of cyanide-containing wastewater on bacterial species in biofilms, thus having a wider range of applications.

[0047] Further features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the disclosure and, together with the description, serve to explain the principles of the disclosure.

[0049] Figure 1 Shown is a schematic diagram of the system composition structure of the present invention;

[0050] Figure 2 Shown is a schematic diagram of Internet of Things detection of the present invention;

[0051] Figure 3 Shown is a schematic diagram of an application system of the magnetic stirring assembly of the present invention;

[0052] Figure 4 Shown is a schematic diagram of a control system of a magnetic stirring assembly of the present invention;

[0053] Figure 5 It is a schematic diagram showing the application of the electronic device of the present invention. DETAILED DESCRIPTION

[0054] Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0055] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0056] In addition, numerous specific details are provided in the following detailed description to better illustrate the present disclosure. Those skilled in the art will appreciate that the present disclosure can be practiced without certain specific details. In some instances, methods, components, and circuits well known to those skilled in the art are not described in detail in order to highlight the main points of the present disclosure.

[0057] Example 1

[0058] like Figure 1 As shown, in one aspect, the present application proposes an experimental system for determining the biodegradability of organic matter in industrial wastewater, comprising:

[0059] A biochemical reactor, used to carry out biochemical reactions of organic matter in the sampled industrial wastewater;

[0060] An oxygen detector is installed on the biochemical reactor to detect the oxygen concentration in the biochemical reactor: mol(O2) and to feed back the information to the host computer in real time;

[0061] A carbon dioxide detector is installed on the biochemical reactor to detect the carbon dioxide concentration in the biochemical reactor: mol(CO2) and provide real-time feedback to the host computer;

[0062] A methane detector is installed on the biochemical reactor to detect the methane concentration in the biochemical reactor: mol(CH4) and provide real-time feedback to the host computer;

[0063] The host computer is used to substitute the mol(O2), mol(CO2) and mol(CH4) obtained by real-time detection into the preset organic matter degradation amount evaluation formula, and evaluate and output the organic matter degradation amount in real time;

[0064] The oxygen detector, carbon dioxide detector and methane detector are respectively connected to the host computer for communication.

[0065] This method uses changes in the concentrations of oxygen, carbon dioxide, and methane to measure the content of biodegradable organic matter in wastewater. The method primarily measures changes in the concentrations of oxygen (aerobic oxygen consumption), carbon dioxide (a product of aerobic microbial metabolism), and methane (a product of anaerobic microbial metabolism) in the reactor during the wastewater biochemical process to characterize the content of biodegradable organic matter in the wastewater.

[0066] A detection system is composed of a biochemical reactor, oxygen, carbon dioxide and methane concentration detectors and a host computer. The host computer is pre-configured with a corresponding organic matter degradation evaluation formula. After the oxygen detector, carbon dioxide detector and methane detector complete the corresponding gas concentration detection, the detection value will be reported to the host computer through the network. The host computer will substitute the mol(O2), mol(CO2) and mol(CH4) obtained by real-time detection into the preset organic matter degradation evaluation formula, and evaluate and output the organic matter degradation amount in real time.

[0067] The organic matter degradation evaluation formula pre-configured in the host computer can be specifically configured by the administrator to provide a specific formula.

[0068] Because the standard method of BOD microbial sensor determination is to use the effect of microorganisms fixed in the biofilm in the sensor on organic matter in the water to determine BOD, but this method is only for the determination of soluble biodegradable organic matter in water samples, the microorganisms used have certain limitations, and high concentrations of fungicides, pesticides, free chlorine and high concentrations of cyanide-containing wastewater are toxic to the bacteria in the biofilm.

[0069] Therefore, this system uses gas concentration detection and reports it to the host computer to evaluate the amount of organic matter degradation, which can overcome the above-mentioned shortcomings of the BOD microbial sensor. There is no need to consider the toxic effects of high concentrations of fungicides, pesticides, free chlorine and high concentrations of cyanide-containing wastewater in industrial wastewater on the bacteria in the biofilm.

[0070] The types and models of oxygen detectors, carbon dioxide detectors, methane detectors and biochemical reactors, as well as their application principles, should be used in conjunction with the equipment configured by the technicians.

[0071] Oxygen detectors, carbon dioxide detectors and methane detectors need to be sealed and connected to the interfaces on the biochemical reactor to prevent gas leakage.

[0072] Oxygen detectors, carbon dioxide detectors and methane detectors can use corresponding experimental instruments and equipment, or corresponding concentration detection sensors, such as carbon dioxide concentration sensors, etc.

[0073] In order to obtain concentration detection values ​​in real time, the oxygen detector, carbon dioxide detector and methane detector of the present invention all adopt Internet of Things devices / instruments, that is, the oxygen detector, carbon dioxide detector and methane detector themselves are equipped with corresponding sensors, controllers, processors, power supplies and communication modules, etc., which can form an Internet of Things communication system and report the sampled and detected gas concentration values ​​to the host computer in real time.

[0074] The Internet of Things (IoT) system is a complex and powerful network system that enables intelligent connections and interactions between objects and between objects and people. The following is a detailed analysis of the composition and principles of the IoT system:

[0075] 1. Composition of the Internet of Things System

[0076] 1. Things: These are the basic units of an IoT system and include various sensors, actuators, RFID tags, and smart devices. These devices collect real-time information about the environment or objects, such as temperature, humidity, location, and status, and transmit this data to a cloud platform or other processing center via a network.

[0077] 2. Gateways: Gateways connect IoT devices and cloud platforms, responsible for data collection, forwarding, and protocol conversion. Through gateways, IoT devices can communicate securely and reliably with cloud platforms, enabling remote data transmission and monitoring.

[0078] 3. Network Infrastructure: Network infrastructure is a key component of IoT systems and includes various wired and wireless communication networks, such as Wi-Fi, Bluetooth, ZigBee, LoRa, and NB-IoT. These networks provide extensive connectivity for IoT devices, enabling data to flow freely between devices and between devices and cloud platforms.

[0079] 4. Cloud Infrastructure: Cloud infrastructure is the data processing center of the IoT system, consisting of a large number of servers, storage devices, and software platforms. On this cloud platform, IoT data can be stored, processed, analyzed, and mined, extracting valuable information for decision support.

[0080] 2. Principles of the Internet of Things System

[0081] The principles of the Internet of Things system are mainly based on the following key technologies:

[0082] 1. Sensor technology: Through sensor technology, IoT devices can sense real-time information about the environment or objects, such as temperature, humidity, light, and sound. This information forms the foundational data for IoT systems and provides an important basis for subsequent data processing and analysis.

[0083] 2. Network communication technology: IoT devices communicate with cloud platforms via wireless or wired networks, enabling remote data transmission and monitoring. Network communication technology ensures the real-time and reliability of data, providing a strong foundation for the operation of IoT systems.

[0084] 3. Cloud computing technology: Cloud computing provides powerful data processing capabilities for IoT systems. On cloud platforms, IoT data can be stored, processed, analyzed, and mined, extracting valuable information for decision support. Cloud computing also enables resource sharing and reuse, reducing the operating costs of IoT systems.

[0085] 4. Artificial Intelligence: Artificial intelligence is increasingly being used in IoT systems. Through machine learning, deep learning, and other technologies, IoT data can be intelligently processed and analyzed, enabling prediction, early warning, and automated control. These capabilities make IoT systems more intelligent and automated.

[0086] The Internet of Things system of the present invention can be composed of devices, gateways, network infrastructure and cloud infrastructure, and can achieve intelligent connection and interaction between things and things, and between things and people through sensor technology, network communication technology, cloud computing technology and artificial intelligence technology.

[0087] The specific IoT module types used by oxygen detectors, carbon dioxide detectors, and methane detectors can be configured by the user.

[0088] like Figure 2 As shown, as an optional implementation scheme of the present application, optionally, the oxygen detector, carbon dioxide detector and methane detector are all IoT detection devices, equipped with IoT communication modules;

[0089] The IoT communication module is used to transmit mol(O2), mol(CO2) or mol(CH4) obtained by real-time detection to the host computer;

[0090] The oxygen detector, carbon dioxide detector and methane detector are respectively connected to the host computer through the IoT communication modules configured therein.

[0091] As an optional implementation scheme of the present application, optionally, the IoT communication module supports the following communication modes:

[0092] WiFi, Bluetooth, 4 / 5G communication or NFC.

[0093] The Internet of Things communication module used in the above-mentioned oxygen detector, carbon dioxide detector and methane detector of the present invention can be a WiFi, Bluetooth, 4 / 5G communication or NFC module. The specific communication connection method with the host computer can be configured by referring to the mode supported by the determined Internet of Things communication module.

[0094] The basic steps of the above system are as follows:

[0095] 1. Preparation

[0096] Collect wastewater samples: Collect representative samples from the wastewater to be tested.

[0097] Set up a biochemical reactor: Use an appropriate biochemical reactor (such as a bioreactor, biofilter, etc.) to ensure that the conditions inside the reactor are suitable for the growth and activity of microorganisms (such as temperature, pH value, nutrients, etc.).

[0098] 2. Inoculation and Cultivation

[0099] Inoculation of microorganisms: Adding an appropriate amount of activated sludge or specific microbial strains to the biochemical reactor, these microorganisms can degrade organic matter in the wastewater.

[0100] Cultivation and reaction: Cultivate microorganisms under appropriate conditions so that they can undergo biochemical reactions with organic matter in the wastewater.

[0101] 3. Gas monitoring

[0102] Set up a gas monitoring system: set up a gas sampling port on the top or side of the biochemical reactor and connect it to a gas analyzer.

[0103] Monitoring gas concentrations: Regularly or continuously monitor changes in oxygen, carbon dioxide, and methane concentrations within the reactor and report these changes to the host computer via the Internet of Things. These changes in gas concentrations reflect the progress of biochemical reactions and the degree of organic matter degradation.

[0104] 4. Data Analysis

[0105] Record data: Record the monitored gas concentration data, including initial concentration, concentration changes during the reaction process, and final concentration.

[0106] Calculate degradation rate: Calculate the degradation rate of organic matter based on changes in gas concentration. For example, the degradation of organic matter can be estimated by oxygen consumption and carbon dioxide production.

[0107] The volume of 1 mole of gas is 22.4 liters.

[0108] The present invention provides a method for evaluating the degradation amount of organic matter, which dynamically evaluates the degradation amount of organic matter in industrial wastewater through a calibration method.

[0109] As an optional embodiment of the present application, optionally, the organic matter degradation amount evaluation formula is as follows:

[0110] K=K0*mol(O2) / (mol(CO2)+mol(CH4)),

[0111] Wherein, K0 is the default degradation amount of organic matter measured under the default molar ratio of oxygen, carbon dioxide and methane;

[0112] mol(O2) / ((mol(CO2)+mol(CH4)), which represents the ratio of oxygen concentration to the sum of carbon dioxide and methane concentrations, that is, the concentration ratio;

[0113] Under the default concentration ratio, mol(O2) / ((mol(CO2)+mol(CH4)) is a constant; when the concentration changes, the value of mol(O2) / (mol(CO2)+mol(CH4)) will change. Therefore, the ratio of K0 is taken based on the dynamic and real-time concentration change ratio: mol(oxygen) / (mol(CO2)+mol(CH4)) to evaluate the content of biodegradable organic matter in the wastewater.

[0114] Anaerobic degradation (e.g. methane production):

[0115] Under anaerobic conditions, organic matter may be degraded into methane (CH4) and carbon dioxide. This process is more complicated because different organic matter produces different ratios of methane and carbon dioxide.

[0116] A simplified estimation method is based on the conservation of carbon. Assuming that all carbon in organic matter is converted into methane and carbon dioxide, then:

[0117] Carbon content in organic matter (C, mol) = Carbon content in methane (CH4, mol) + Carbon content in carbon dioxide (CO2, mol)

[0118] Since the molar ratios of carbon in methane (CH4) and carbon dioxide (CO2) are 1:1 and 1:2 respectively, then:

[0119] The amount of carbon in organic matter (C, mol) = methane production (CH4, mol) + 0.5 × carbon dioxide production (CO2, mol);

[0120] However, in the biochemical process of industrial wastewater, there is not only anaerobic environment, but also aerobic degradation.

[0121] Therefore, oxygen consumption will also affect the degradation amount of organic matter.

[0122] There are generally two ways for organic matter to be metabolized and consumed by microorganisms: aerobic metabolism and anaerobic metabolism. Therefore, the biodegradability of wastewater can be determined by the following conditions:

[0123] If organic matter (i.e. COD) is completely metabolized aerobically (consuming oxygen and producing carbon dioxide and water), the biodegradability is very good; the reaction formula is as follows:

[0124] C 18 H 36 O2+ 34 O2→ 18 CO2↑,

[0125] Organic matter (i.e. COD) is metabolized anaerobically (does not consume oxygen, only consumes water, produces methane and carbon dioxide), and its biodegradability is moderate; the reaction formula is as follows:

[0126] C 18 H 36 O2+8H2O→ 13 CH4↑+5CO2↑.

[0127] If organic matter cannot be metabolized aerobically or anaerobically (i.e., the concentrations of oxygen, carbon dioxide, and methane do not change), its biodegradability is extremely poor.

[0128] Therefore, the biodegradability of wastewater can be reflected by the above molar ratios of oxygen, carbon dioxide and methane. That is, if all the oxygen is consumed, it proves that the biodegradability is very good; if part of the oxygen is consumed and methane and carbon dioxide are produced at the same time, it proves that the biodegradability is medium; if the oxygen is not consumed and methane and carbon dioxide are not produced, it proves that the biodegradability is extremely poor.

[0129] The corresponding molar ratio threshold for each case can be set by the administrator in the host computer. By comparing the molar ratio with the threshold, the corresponding biochemical proof result can be output.

[0130] In summary, the present invention proposes a calculation formula for evaluating the content of biodegradable organic matter in wastewater based on the changes in the concentrations of oxygen, carbon dioxide, and methane:

[0131] K=K0*mol(O2) / (mol(CO2)+mol(CH4))

[0132] K0 is the default organic matter degradation amount measured at the default molar ratio of oxygen, carbon dioxide and methane.

[0133] K0 can be determined experimentally (ie, at given oxygen, carbon dioxide and methane concentrations, the initial content of biodegradable organic matter in the wastewater can be determined, and the average value can be obtained by multiple measurements) and pre-configured in the host computer.

[0134] Subsequently, changes in the concentrations of oxygen, carbon dioxide, and methane will also affect the corresponding biodegradation of organic matter. Therefore, the present invention uses the ratio between oxygen consumption and the sum of carbon dioxide and methane production to assess the content of biodegradable organic matter in the corresponding wastewater, achieving the purpose of measurement and providing a reference for users.

[0135] The above method is used to measure the content of biodegradable organic matter in wastewater, which provides an important reference basis for wastewater treatment and environmental protection without considering the impact of wastewater on microorganisms.

[0136] In order to accelerate, evenly and accurately measure the degradation content of organic matter in wastewater, the present invention provides a magnetic stirring component to evenly stir the industrial wastewater and allow the wastewater to mix and flow evenly.

[0137] like Figure 3 As shown, as an optional embodiment of the present application, optionally, it also includes:

[0138] The magnetic stirring component is arranged on the biochemical reactor and is used for stirring the industrial wastewater in the biochemical reactor to accelerate the biochemical reaction of organic matter.

[0139] like Figure 4As shown, as an optional embodiment of the present application, optionally, the magnetic stirring assembly includes:

[0140] A magnetic motor is provided at the bottom of the biochemical reactor and is used for servo-driving the magnetic rotor;

[0141] A magnetic rotor is provided inside the biochemical reactor and is used for stirring;

[0142] A controller for servo-controlling the magnetic motor;

[0143] The magnetic rotor is installed at the end of the magnetic motor;

[0144] The magnetic motor is electrically connected to the controller;

[0145] The controller is communicatively connected to the host computer.

[0146] The principle of magnetic rotor mainly involves the interaction of magnetic fields and the conversion of energy. In magnetic motors and magnetic pumps, the working principle of magnetic rotor is based on the coupling effect of magnetic fields. Specifically:

[0147] In a magnetic motor, the stator generates a magnetic field through energized coils. This magnetic field interacts with the magnetic material inside the rotor, generating torque that rotates the rotor. This design makes the motor highly efficient, simple in structure, durable, and easy to maintain.

[0148] In a CQB circulating magnetic pump, the magnetic rotor is made of permanent magnetic material. When the motor starts, the transmission device causes the magnetic rotor to rotate. The magnetic force between the static and dynamic magnetic rings causes the magnetic rotor to rotate with the working medium in the pump body, thereby achieving fluid transportation.

[0149] The controller can be a PLC controller or a single-chip microcomputer such as an STM32 single-chip microcomputer, which can communicate with the host computer and control the magnetic motor to drive the magnetic rotor to rotate according to the control parameters sent by the host computer, thereby achieving stirring.

[0150] The specific models of the controller, magnetic motor, etc. can be configured by the user and are not limited in this embodiment.

[0151] Stirring is of great significance in wastewater determination, which is mainly reflected in the following aspects:

[0152] 1. Accelerate chemical reaction rate: Stirring can effectively mix the chemical reagents and samples in the wastewater, promoting the uniform occurrence of the reaction. This uniform mixing effect allows the substances in the wastewater to react more efficiently with the reagents, thereby shortening the measurement time and improving the measurement efficiency.

[0153] 2. Improve measurement accuracy: Stirring helps ensure sufficient contact and reaction between the wastewater sample and the reagent, avoiding measurement errors caused by local concentrations that are too high or too low. By stirring, the substances in the wastewater are distributed more evenly, thereby improving the accuracy and reliability of the measurement.

[0154] 3. Promote wastewater treatment: Agitation is also a crucial step in the wastewater treatment process. Agitation accelerates the reaction between pollutants and treatment agents, improving wastewater treatment efficiency. Agitation also helps evenly suspend sediment in the wastewater, facilitating subsequent operations such as sedimentation and separation.

[0155] 4. Ensure representative water samples: During wastewater sampling, stirring helps mix the different components in the wastewater, avoiding sampling errors caused by uneven distribution of components. By stirring, we can ensure that the collected water samples are representative, thus more accurately reflecting the overall condition of the wastewater.

[0156] The magnetic stirring method of the present invention not only improves measurement efficiency and accuracy, but also facilitates wastewater treatment and enhances the representativeness of water sample collection. Therefore, during wastewater measurement and treatment, the role of stirring should be fully valued, and appropriate measures should be taken to ensure uniformity and adequacy of stirring.

[0157] Obviously, those skilled in the art should understand that the implementation of all or part of the processes in the above embodiments can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the above-mentioned control embodiments. Those skilled in the art can understand that the implementation of all or part of the processes in the above embodiments can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the above-mentioned control embodiments. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), a flash memory (Flash Memory), a hard disk (Hard Disk Drive, abbreviated: HDD) or a solid-state drive (SSD), etc.; the storage medium can also include a combination of the above-mentioned types of memory.

[0158] Example 2

[0159] Based on the implementation principle of Example 1, the present application proposes a measurement method, which is implemented based on the experimental system for determining the biodegradability of organic matter in industrial wastewater, and includes the following steps:

[0160] Initialize the system and establish communication between the host computer and the oxygen detector, carbon dioxide detector, methane detector and magnetic motor;

[0161] The host computer sends control parameters to the controller, which controls the rotation of the magnetic motor to drive the magnetic rotor to stir the industrial wastewater on the biochemical reactor;

[0162] The oxygen detector detects the oxygen concentration value in the biochemical reactor: mol(O2) and feeds back to the host computer in real time;

[0163] The carbon dioxide detector detects the carbon dioxide concentration value in the biochemical reactor: mol(CO2) and feeds back to the host computer in real time;

[0164] The methane detector detects the methane concentration value in the biochemical reactor: mol(CH4) and feeds back to the host computer in real time;

[0165] The host computer substitutes the mol(O2), mol(CO2) and mol(CH4) obtained by real-time detection into the preset organic matter degradation evaluation formula, and evaluates and outputs the organic matter degradation amount in real time.

[0166] After adding a certain amount of industrial wastewater to the biochemical reactor, stirring and testing begin. The host computer continuously calculates and outputs the amount of organic matter degradation in the industrial wastewater for technical personnel to view or understand.

[0167] Industrial wastewater can be added to the biochemical reactor in real time through the sampling port and discharged at the same time to achieve circulation and flow detection.

[0168] The specific interactions between the above systems can be understood in conjunction with Example 1, and will not be described in detail in this example.

[0169] The modules or steps of the present invention described above can be implemented using a general-purpose computing system. They can be centralized on a single computing system or distributed across a network of multiple computing systems. Alternatively, they can be implemented using program code executable by the computing system, which can then be stored in a storage system and executed by the computing system. Alternatively, they can be fabricated into separate integrated circuit modules, or multiple modules or steps can be fabricated into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0170] Example 3

[0171] Furthermore, in another aspect, the present application further provides an electronic device, comprising:

[0172] processor;

[0173] a memory for storing processor-executable instructions;

[0174] The processor is configured to implement the measurement method described in Example 2 when executing the executable instructions.

[0175] The electronic device of the embodiment of the present disclosure includes a processor and a memory for storing instructions executable by the processor, wherein the processor is configured to implement the measurement method described in the above embodiment 2 when executing the instructions.

[0176] It should be noted that the number of processors can be one or more. Furthermore, the electronic device according to the embodiments of the present disclosure may also include an input system and an output system. The processor, memory, input system, and output system may be connected via a bus or other means, which are not specifically limited herein.

[0177] Memory, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and various modules, such as the program or module corresponding to the measurement method in the embodiments of the present disclosure. The processor executes the software programs or modules stored in the memory to perform various functional applications and data processing of the electronic device.

[0178] The input system can be used to receive input numbers or signals. The signals can be key signals related to user settings and function control of the device / terminal / server. The output system can include display devices such as display screens.

[0179] While various embodiments of the present disclosure have been described above, the foregoing description is intended to be illustrative, non-exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or technological improvements in the marketplace, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An experimental system for determining the biodegradability of organic matter in industrial wastewater, characterized by: include: A biochemical reactor, used to carry out biochemical reactions of organic matter in the sampled industrial wastewater; An oxygen detector is installed on the biochemical reactor to detect the oxygen concentration in the biochemical reactor: mol (O2) and provide real-time feedback to the host computer; A carbon dioxide detector is installed on the biochemical reactor to detect the carbon dioxide concentration in the biochemical reactor: mol (CO2) and provide real-time feedback to the host computer; A methane detector is installed on the biochemical reactor to detect the methane concentration value in the biochemical reactor: mol (CH4) and provide real-time feedback to the host computer; The host computer is used to substitute the mol (O2), mol (CO2) and mol (CH4) obtained by real-time detection into the preset organic matter degradation amount evaluation formula, and evaluate and output the organic matter degradation amount K in real time; the organic matter degradation amount evaluation formula is as follows: K=K0*mol(O2) / (mol(CO2)+mol(CH4)), Wherein, K0 is the default degradation amount of organic matter measured under the default molar ratio of oxygen, carbon dioxide and methane; mol(O2) / ((mol(CO2)+mol(CH4))), which represents the ratio of oxygen concentration to the sum of carbon dioxide and methane concentrations, that is, the concentration ratio; Under the default concentration ratio, mol(O2) / ((mol(CO2)+mol(CH4))) is a fixed value; when the concentration changes, the value of mol(O2) / (mol(CO2)+mol(CH4)) will change. Therefore, based on the concentration ratio of mol(O2) / (mol(CO2)+mol(CH4)) that changes dynamically in real time, the K0 value is proportionally determined to evaluate the content of biodegradable organic matter in the wastewater. The oxygen detector, carbon dioxide detector and methane detector are respectively connected to the host computer for communication.

2. The experimental system for determining the biodegradability of organic matter in industrial wastewater according to claim 1, characterized in that: The oxygen detector, carbon dioxide detector and methane detector are all IoT detection equipment and are equipped with IoT communication modules; The IoT communication module is used to transmit mol (O2), mol (CO2) or mol (CH4) obtained by real-time detection to the host computer; The oxygen detector, carbon dioxide detector and methane detector are respectively connected to the host computer through the IoT communication modules configured therein.

3. The experimental system for determining the biodegradability of organic matter in industrial wastewater according to claim 2, characterized in that: The IoT communication module supports the following communication modes: WiFi, Bluetooth, 4 / 5G communication or NFC.

4. The experimental system for determining the biodegradability of organic matter in industrial wastewater according to claim 1, characterized in that: Also includes: The magnetic stirring component is arranged on the biochemical reactor and is used for stirring the industrial wastewater in the biochemical reactor to accelerate the biochemical reaction of organic matter.

5. The experimental system for determining the biodegradability of organic matter in industrial wastewater according to claim 4, characterized in that: The magnetic stirring assembly comprises: A magnetic motor is provided at the bottom of the biochemical reactor and is used for servo-driving the magnetic rotor; A magnetic rotor is provided inside the biochemical reactor and is used for stirring; A controller for servo-controlling the magnetic motor; The magnetic rotor is installed at the end of the magnetic motor; The magnetic motor is electrically connected to the controller; The controller is communicatively connected to the host computer.

6. A measurement method, implemented based on the experimental system for determining the biodegradability of organic matter in industrial wastewater according to claim 5, characterized in that: The steps include: Initialize the system and establish communication between the host computer and the oxygen detector, carbon dioxide detector, methane detector and magnetic motor; The host computer sends control parameters to the controller, which controls the rotation of the magnetic motor to drive the magnetic rotor to stir the industrial wastewater on the biochemical reactor; The oxygen detector detects the oxygen concentration value in the biochemical reactor: mol (O2), and feeds back to the host computer in real time; The carbon dioxide detector detects the carbon dioxide concentration value in the biochemical reactor: mol (CO2), and feeds back to the host computer in real time; The methane detector detects the methane concentration value in the biochemical reactor: mol (CH4), and feeds back to the host computer in real time; The host computer substitutes the mol (O2), mol (CO2) and mol (CH4) obtained by real-time detection into the preset organic matter degradation evaluation formula, and evaluates and outputs the organic matter degradation amount in real time.

7. An electronic device, characterized in that include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to implement the measurement method according to claim 6 when executing the executable instructions.

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