A system and operation method for precisely repairing sulfamethoxazole contaminated soil by ball-milling biochar

Abstract

The application discloses a system for precisely and dynamically repairing sulfamethoxazole contaminated soil by using ball-milled biochar and a running method thereof, and belongs to the field of contaminated ecological environment protection and soil remediation. The system is composed of five systems, i.e., a monitoring system, a control system, a feeding system, a supplementing system and a storage system. The monitoring system monitors the feeding system, the supplementing system and the storage system in real time, and synchronously transmits the monitored data to the control system. After processing and analyzing the data, the control system transmits instructions to control the feeding system to add ball-milled biochar to the storage system, and to control the supplementing system to supplement ball-milled biochar to the feeding system. After the storage system reaches a predetermined processing value, the control system controls the feeding system and the supplementing system to be closed, so that the whole system can be kept in real-time and dynamic stable operation. The application can accurately calculate the amount of ball-milled biochar by real-time monitoring of the sulfamethoxazole content in the contaminated soil, so that the ball-milled biochar can be precisely, dynamically and automatically added, and the application has the advantages of accurate dosage, resource saving and efficient removal.

Description

Technical Field

[0001] This invention belongs to the field of ecological environment protection and contaminated soil remediation, specifically relating to a remediation method for removing sulfamethoxazole from soil using ball-milled biochar. Background Technology

[0002] Biochar, as a novel environmentally friendly carbon material, has been widely used as a soil conditioner to improve soil fertility, promote the fixation or dissipation of pollutants, and regulate the structure of soil microbial communities. Existing research indicates that biochar can remove antibiotics from soil through adsorption or enhanced biodegradation. However, the efficient utilization of traditional pyrolytic biochar in soil remains a bottleneck due to inherent limitations such as insufficient specific surface area, pore structure, and oxygen-containing functional groups. Currently, scholars both domestically and internationally have explored various modification methods to improve the pollutant removal performance of biochar, primarily through chemical modification. However, chemical modification generally involves complex procedures and expensive reagents, posing drawbacks such as high environmental pollution risks and high costs, making its application in soil impractical.

[0003] Mechanical ball milling is a novel green physical modification technology that has emerged in recent years. It can reduce biochar particle size, increase internal and external surface area, and expose more graphene structures and oxygen-containing functional groups. However, there are few reports on the effects of ball-milled biochar on antibiotic immobilization and removal in soil, and research on whether ball-milled biochar can accelerate antibiotic removal by changing soil properties and microbial communities is still in its early stages.

[0004] Chinese patent application CN202311772420.7, entitled "A Modified Sugarcane Bagasse Biochar, Preparation Method and Its Application in Soil Improvement," discloses a modified sugarcane bagasse biochar, its preparation method, and its application in soil improvement. The modified sugarcane bagasse biochar produced by this invention can efficiently remove aminoglycoside antibiotics from the soil, has a wide range of applications, and is unaffected by the soil environment. However, the modification method used in this invention is chemical modification, which is cost-effective, complex, and makes large-scale production of biochar difficult, resulting in low practical application feasibility.

[0005] Chinese patent application CN202211070963.X, entitled "A Method for Remediating Soil Contaminated with Fluoroquinolone Antibiotics," discloses a method for remediating soil contaminated with fluoroquinolone antibiotics. This method involves adding a certain proportion of biochar to the soil contaminated with fluoroquinolone antibiotics, providing sunlight, and maintaining a certain soil moisture content. The fluoroquinolone antibiotics are removed from the soil through adsorption and photochemical reactions. However, this invention does not address the changes and impacts on the soil microbial structure and the soil microbial community structure after adding biochar. Furthermore, the amount of biochar added is difficult to control, easily leading to resource waste.

[0006] Chinese patent application CN202410413752.4, entitled "A Method for Improving Soil Using Biochar in Synergy with Microbial Carbonate Mineralizing Bacteria," discloses a method for improving soil by utilizing carbonate mineralizing bacteria to accelerate mineralization and crystallization, physically promoting the formation of large soil aggregates and improving soil porosity, chemically continuously increasing soil calcium carbonate content and fertility, and using biochar to improve the carbon-nitrogen ratio balance; biologically, it can reconstruct the microbial community, enhancing microbial colonization capacity, thereby achieving the goal of improving soil. However, this invention does not focus on the problem of antibiotic pollution in soil, fails to leverage the enormous application potential of biochar in the remediation of antibiotic-contaminated soil, and cannot make accurate dynamic remediation based on the actual conditions of the contaminated soil. Summary of the Invention

[0007] Objective of the Invention: To address the aforementioned issues and overcome the shortcomings of existing technologies, this invention provides a system and operating method for the dynamic and precise remediation of sulfamethoxazole-contaminated soil using ball-milled biochar. This method can precisely control the amount of ball-milled biochar required for treating the contaminated soil and monitor the sulfamethoxazole content in the soil in real time, offering advantages such as precise dosage, resource conservation, and efficient removal.

[0008] Technical solution: The objective of this invention is achieved through the following technical means:

[0009] A system for the dynamic and precise remediation of sulfamethoxazole-contaminated soil using ball-milled biochar is provided. The system includes a monitoring system (1), a control system (2), a feeding system (3), a feeding system (4), and a collection system (5). The monitoring system monitors the feeding system, feeding system, and collection system in real time and transmits the monitored data to the control system. After processing and analyzing the data, the control system transmits instructions to control the feeding system to add ball-milled biochar to the collection system and the feeding system to replenish ball-milled biochar to the feeding system. After the collection system reaches the predetermined treatment value, the control system controls the feeding system and feeding system to shut down, so that the entire system can maintain real-time dynamic and stable operation.

[0010] The monitoring system (1) includes: a monitoring unit (1-1), a soil parameter monitor (1-2), a soil sulfamethoxazole monitor (1-3), a feed box laser displacement sensor (1-4), and a feed box laser displacement sensor (1-5). The soil parameter monitor (1-2) and the soil sulfamethoxazole monitor (1-3) are arranged in the storage system (5), with a density of 50 m³ / s. 2 / each, inserted into the soil at a depth of 5-10cm; the laser displacement sensor (1-4) of the feeding box is placed on the side wall of the feeding box (4-1) near the top; the laser displacement sensor (1-5) of the feeding box is placed on the side wall of the feeding box (3-2-1) near the top.

[0011] Specifically, the monitoring unit (1-1) collects various information gathered by the aforementioned monitors and sensors and transmits it synchronously to the control system (2) in real time. The storage system (5) is for the sulfamethoxazole-contaminated soil to be treated.

[0012] The control system (2) includes: a central control computing unit (2-1) and a ball mill biochar dosage calculation module (2-2). The central control computing unit (2-1) receives and processes information transmitted from the monitoring unit (1-1) and issues commands to control the real-time operation of the entire system; the ball mill biochar dosage calculation module (2-2) calculates the amount of ball mill biochar added during the operation of the entire system.

[0013] The feeding system (3) includes: a soil breaking unit (3-1) and a feeding unit (3-2).

[0014] The soil breaking unit (3-1) includes: a fixed rod assembly (3-1-1), a rotating shaft (3-1-2), a feeding drive motor (3-1-3), a rotary tiller (3-1-4), a lifting assembly (3-1-5), and a transmission assembly (3-1-6).

[0015] Specifically, the rotary tiller (3-1-4) is fixed on the rotating shaft (3-1-2), and the rotating shaft (3-1-2) can move horizontally along the fixed rod assembly (3-1-1); the rotary tiller (3-1-4), the lifting assembly (3-1-5), and the transmission assembly (3-1-6) are controlled by the feeding drive motor (3-1-3), which is connected to the central control computing unit (2-1) and controlled by it.

[0016] The feeding unit (3-2) includes: a feeding box (3-2-1), a conveyor (3-2-2), a conveying hopper (3-2-3), and a baffle (3-2-4). The upper end of the conveyor (3-2-2) is connected to the bottom of the feeding box (3-2-1), and the lower end is connected to the conveying hopper (3-2-3). The baffle (3-2-4) is arranged on the top side of the conveying hopper (3-2-3). The conveyor (3-2-2) is controlled by a feeding drive motor (3-1-3).

[0017] The feeding system (4) includes: a feeding box (4-1), a conveying pipe (4-2), and an automatic valve (4-3). The upper end of the conveying pipe (4-2) is connected to the bottom opening of the feeding box (4-1), and the lower end is fixed to the side wall of the feeding box (3-2-1) near the top. The opening and closing of the conveying pipe (4-2) is controlled by the automatic valve (4-3), which is connected to the central control computing unit (2-1) and controlled by it.

[0018] A method for operating a system of ball-milled biochar for dynamic and precise remediation of sulfamethoxazole-contaminated soil, comprising the following steps:

[0019] Step 1) The monitoring system (1) obtains relevant data through the soil parameter monitor (1-2). i (i = 1, 2, 3...n); relevant data c were obtained through soil sulfamethoxazole monitoring devices (1-3). i (i = 1, 2, 3...n), then the monitored data f i Transmitted to the control system in the form of electrical signals (2);

[0020] Note: f i (i = 1, 2, 3...n) represents the basic parameters of the contaminated soil;

[0021] c i (i = 1, 2, 3...n) represents the sulfamethoxazole content at each monitoring point in the contaminated soil;

[0022] Step 2), the control system (2) transmits data f to the monitoring system (1). i The determination is made based on the following criteria:

[0023] When f i (i = 2, 3) ≥ F i (i = 2, 3)

[0024] and

[0025] If the judgment result is false, the dosing unit (3-2) stops the dosing of ball-milled biochar;

[0026] When f i (i = 2, 3) <F i (i = 2, 3)

[0027] and

[0028] If the judgment result is true, the dosing unit (3-2) will begin adding ball-milled biochar;

[0029] F i The optimal content of a parameter (mg / m³) in a certain contaminated soil under specific climatic conditions. 3 ;

[0030] C0 represents the minimum concentration of sulfamethoxazole in a contaminated soil under specific climatic conditions, expressed in mg / m³. 3

[0031] Step 3) Calculate the dosage of ball-milled biochar:

[0032] Based on the monitoring results of the soil sulfamethoxazole monitor (1-3), the ball mill biochar dosage calculation module (2-2) performs the calculation, and the calculation steps are as follows:

[0033]

[0034] Note: c i ′ represents the required amount of ball-milled biochar to be added, in grams;

[0035] k is the activated carbon coefficient, which is related to the type of raw material of ball-milled biochar. The value is taken according to the test results. For straw and rice husk biochar, it is usually taken as 1.

[0036] q(h) is the density function of the contaminated soil, which varies with soil depth;

[0037] L is the length of the contaminated soil in meters;

[0038] B represents the width of the contaminated soil in meters.

[0039] H represents the depth (m) of the contaminated soil to be treated.

[0040] Step 4) First, turn on the feeding drive motor (3-1-3). Then, the feeding system (3) starts working according to the feeding command of the control system (2). The lifting component (3-1-5) and the transmission component (3-1-6) adjust the position of the fixed rod component (3-1-1) according to the treatment depth of the contaminated soil, and control the rotary tillage blade (3-1-4) to break the soil. After the soil is broken, the ball mill biochar is accurately added through the conveyor (3-2-2) and the conveying hopper (3-2-3). The dosage is controlled by the feeding box (3-2-1) according to the calculation result of the ball mill biochar dosage calculation module (2-2).

[0041] Step 5) When the feeding box (3-2-1) starts adding ball mill biochar, the system simultaneously begins determining whether to replenish the material. The specific determination steps are as follows:

[0042] When X 投 >X o If the result is true, the conveying pipe (4-2) will be opened and feeding will begin;

[0043] When X 投 If the value is less than X1, the result is false, the conveying pipe (4-2) is closed, and material feeding is stopped.

[0044] Note: X o The distance (m) between the surface of the ball-milled biochar in the feeding box and the laser displacement sensor in the feeding box that initiates feeding.

[0045] X1 is the distance (m) between the surface of the ball-milled biochar in the feeding box and the laser displacement sensor in the feeding box stopping the feeding.

[0046] Step 6) Simultaneously, the replenishment box determines the amount of remaining ball-milled activated carbon. The specific determination steps are as follows:

[0047] When X 补 If the result is greater than X0′, the result is true, indicating that activated carbon needs to be added.

[0048] When X 补 If <X1′, the result is false, and a prompt to close is displayed;

[0049] Note: X0′ is the distance in meters from the surface of the ball-milled biochar in the feeding box to the laser displacement sensor in the feeding box that started to alert the user.

[0050] X1′ is the distance in meters from the surface of the ball-milled biochar in the feeding box to the laser displacement sensor in the feeding box, which is the stop reminder distance.

[0051] Step 7) After adding the ball mill biochar, turn off the feeding drive motor (3-1-3).

[0052] Beneficial effects: Compared with the prior art, the advantages of this invention are:

[0053] (1) It realizes the automated dynamic remediation of sulfamethoxazole contaminated soil. By setting up a monitoring system, control system, feeding system, replenishment system and storage system, it replaces the traditional method of manually adding ball mill biochar. It realizes real-time dynamic monitoring of sulfamethoxazole content in contaminated soil and precise addition of ball mill biochar for remediation. It has the advantages of precise dosage, resource saving and efficient removal.

[0054] (2) The monitoring and control system enables efficient and intelligent operation of the soil remediation process. Through real-time monitoring, synchronous calculation, and precise quantity control, the sulfamethoxazole content in the contaminated soil is controlled within a harmless range, thereby achieving dynamic and efficient remediation of sulfamethoxazole contaminated soil.

[0055] (3) This invention effectively ensures the removal efficiency of sulfamethoxazole while avoiding the problem of excessive addition of ball milled biochar, thus saving resources. Attached Figure Description

[0056] Figure 1 SEM images comparing the ball-milled biochar used in this invention before and after ball milling;

[0057] Figure 2 A schematic diagram illustrating the working principle of a system for the dynamic and precise remediation of sulfamethoxazole-contaminated soil using ball-milled biochar.

[0058] Figure 3 A flowchart illustrating the operation of a system for the dynamic and precise remediation of sulfamethoxazole-contaminated soil using ball-milled biochar;

[0059] Figure 4 This is a schematic diagram of the layout of a system for the dynamic and precise remediation of sulfamethoxazole-contaminated soil using ball-milled biochar.

[0060] Note: Monitoring system-1, Control system-2, Feeding system-3, Replenishing system-4, Storage system-5;

[0061] Monitoring Unit-1-1, Soil Parameter Monitor-1-2, Soil Sulfamethoxazole Monitor-1-3, Feeding Box Laser Displacement Sensor-1-4, Feeding Box Laser Displacement Sensor-1-5;

[0062] Central control computing unit-2-1, ball mill biochar dosage calculation module-2-2.

[0063] Feeding unit-3-2, feeding box 3-2-1, conveyor-3-2-2, conveying hopper-3-2-3, feeding drive motor-3-1-3, rotary tiller 3-1-4, lifting assembly 3-1-5, transmission assembly 3-1-6;

[0064] Material replenishment box-4-1, conveying pipe-4-2, automatic valve-4-3. Detailed Implementation

[0065] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0066] Example 1

[0067] Reference Figure 3 As shown, a system for the dynamic and precise remediation of sulfamethoxazole-contaminated soil using ball-milled biochar is disclosed. This system includes a monitoring system 1, a control system 2, a feeding system 3, a feeding system 4, and a collection system 5. All systems are connected to the monitoring system 1. The monitoring system monitors the feeding system, feeding system, and collection system in real time and synchronously transmits the monitored data to the control system. The control system connects to the feeding system and feeding system. After processing and analyzing the data, the control system transmits commands to control the feeding system to add ball-milled biochar to the collection system and the feeding system to replenish ball-milled biochar to the feeding system. Once the collection system reaches a predetermined treatment value, the control system shuts down the feeding system and feeding system, ensuring the entire system maintains real-time, dynamic, and stable operation.

[0068] The monitoring system 1 includes: a monitoring unit 1-1, a soil parameter monitor 1-2, a soil sulfamethoxazole monitor 1-3, a feed box laser displacement sensor 1-4, and a feed box laser displacement sensor 1-5. The soil parameter monitor 1-2 and the soil sulfamethoxazole monitor 1-3 are arranged in the storage system 5, with a density of 50 units / m². 2The laser displacement sensors 1-4 and 1-5 are installed at a depth of 5-10 cm in the soil. The laser displacement sensors 1-4 for the feeding box are located on the side wall of the feeding box 4-1 near the top. The laser displacement sensors 1-5 for the feeding box 3-2-1 are located on the side wall of the feeding box near the top. The monitoring unit 1-1 collects various information from the above-mentioned monitors and sensors and transmits it synchronously to the control system 2 in real time. The receiving system 5 contains the sulfamethoxazole-contaminated soil to be treated.

[0069] The control system 2 includes: a central control computing unit 2-1 and a ball-milled biochar dosage calculation module 2-2. The central control computing unit 2-1 receives and processes information transmitted from the monitoring unit 1-1, and issues commands to control the real-time operation of the entire system; the ball-milled biochar dosage calculation module 2-2 calculates the dosage of ball-milled biochar during the entire system operation. The morphology of the ball-milled biochar is shown in [see image]. Figure 1 As shown.

[0070] The feeding system 3 includes: a soil breaking unit 3-1 and a feeding unit 3-2.

[0071] The soil breaking unit 3-1 includes: a fixed rod assembly 3-1-1, a rotating shaft 3-1-2, a feeding drive motor 3-1-3, a rotary tiller 3-1-4, a lifting assembly 3-1-5, and a transmission assembly 3-1-6; wherein, the rotary tiller 3-1-4 is fixed on the rotating shaft 3-1-2, and the rotating shaft 3-1-2 can move horizontally along the fixed rod assembly 3-1-1; the rotary tiller 3-1-4, the lifting assembly 3-1-5, and the transmission assembly 3-1-6 are controlled by the feeding drive motor 3-1-3, which is connected to and controlled by the central control computing unit 2-1.

[0072] The feeding unit 3-2 includes: a feeding box 3-2-1, a conveyor 3-2-2, and a conveying hopper 3-2-3. The upper end of the conveyor 3-2-2 is connected to the bottom of the feeding box 3-2-1, and the lower end is connected to the conveying hopper 3-2-3; a baffle is provided on the top side of the conveying hopper 3-2-3. The conveyor 3-2-2 is controlled by a feeding drive motor 3-1-3.

[0073] The feeding system 4 includes: a feeding box 4-1, a conveying pipe 4-2, and an automatic valve 4-3. The upper end of the conveying pipe 4-2 is connected to the bottom opening of the feeding box 4-1, and the lower end is fixed to the side wall of the feeding box 3-2-1 near the top. The opening and closing of the conveying pipe 4-2 is controlled by the automatic valve 4-3, which is connected to the central control computing unit 2-1 and controlled by it.

[0074] A method for operating a system of ball-milled biochar for dynamic and precise remediation of sulfamethoxazole-contaminated soil, comprising the following steps:

[0075] Step 1) The monitoring system (1) obtains relevant data of contaminated soil through soil parameter monitors (1-2). i (i = 1, 2, 3...n); Sulfamethoxazole-related data were obtained using soil sulfamethoxazole monitoring devices (1-3). i (i = 1, 2, 3...n), then the monitored data f i Transmitted to the control system in the form of electrical signals (2);

[0076] Note: f i (i = 1, 2, 3...n) represents the basic parameters of the contaminated soil;

[0077] c i (i = 1, 2, 3...n) represents the sulfamethoxazole content at each monitoring point in the contaminated soil.

[0078] Step 2), the control system (2) processes the data f of the contaminated soil transmitted by the monitoring system (1). i Perform a reception check. If the following conditions are met simultaneously, the system will not work, and step 1 will be repeated.

[0079] f i (i = 2, 3) ≥ F i (i=2,3), and

[0080] Step 3) If the following conditions are met simultaneously, the dosing unit (3-2) will begin dosing the ball-milled biochar;

[0081] f i (i = 2, 3) <F i (i=2,3), and

[0082] F i The optimal content of a parameter (mg / m³) in a certain contaminated soil under specific climatic conditions. 3 ;

[0083] C0 represents the minimum concentration of sulfamethoxazole in a contaminated soil under specific climatic conditions, expressed in mg / m³. 3 .

[0084] Step 4) Calculate the dosage of ball-milled biochar:

[0085] Based on the monitoring results of the soil sulfamethoxazole monitor (1-3), the ball mill biochar dosage calculation module (2-2) calculates the dosage using the following formula:

[0086]

[0087] Note: c i ′ represents the required amount of ball-milled biochar to be added, in grams;

[0088] k is the activated carbon coefficient, which is 1 when using rice husk ball milling of biological materials.

[0089] q(h) is the density function of the contaminated soil, which varies with soil depth;

[0090] L is the length of the contaminated soil in meters;

[0091] B represents the width of the contaminated soil in meters.

[0092] H represents the depth (m) of the contaminated soil to be treated.

[0093] Step 5) Based on the calculation results of the ball mill biochar dosage calculation module (2-2) determined in Step 4), ball mill biochar is added. First, the feeding drive motor (3-1-3) is turned on, and then the feeding system (3) starts working according to the feeding instruction of the control system (2). The lifting component (3-1-5) and the transmission component (3-1-6) adjust the position of the fixed rod component (3-1-1) according to the treatment depth of the contaminated soil, and control the rotary tillage blade (3-1-4) to break the soil. After the soil is broken, the ball mill biochar is accurately added through the conveyor (3-2-2) and the conveying hopper (3-2-3).

[0094] Step 6) When the feeding box (3-2-1) begins adding ball mill biochar, simultaneously begin determining whether to replenish the material. X 投 If the value is less than X1, the result is false, the conveying pipe (4-2) is closed, and material feeding is stopped.

[0095] Note: X1 is the distance (m) between the surface of the ball mill biochar in the feeding box and the laser displacement sensor in the feeding box stopping the feeding.

[0096] Step 7) Simultaneously, the replenishment box determines the amount of remaining ball-milled activated carbon, X 补 If <X1′, the result is false, and a prompt to close is displayed;

[0097] Note: X1′ is the distance in meters from the surface of the ball milled biochar in the feeding box to the laser displacement sensor of the feeding box for stopping the alarm.

[0098] Step 8) Ball mill biochar addition, soil sulfamethoxazole monitor (1-3) real-time monitoring of relevant data. i (i = 1, 2, 3...n), then the monitored data f i The data is transmitted to the control system (2). The control system performs data analysis. Stop adding ball-milled biochar in dosing unit (3-2).

[0099] The foregoing description of various embodiments of this application is provided for the purpose of description to those skilled in the art. It is not intended to be exhaustive or to limit the invention to a single disclosed embodiment. As mentioned above, various alternatives or variations of this application will be apparent to those skilled in the art. Therefore, while some alternative embodiments have been specifically discussed, other embodiments will be obvious or readily apparent to those skilled in the art. This application is intended to include all alternatives, modifications, and variations of the invention already discussed herein, as well as other embodiments falling within the spirit and scope of the foregoing application.

[0100] Although this application has been described through embodiments, those skilled in the art will recognize that many modifications and variations are possible without departing from the spirit of this application, and it is intended that the appended claims cover such modifications and variations without departing from the spirit of this application.

Claims

1. A system for the dynamic and precise remediation of sulfamethoxazole-contaminated soil using ball-milled biochar, characterized in that, The system includes a monitoring system (1), a control system (2), a feeding system (3), a feeding system (4), and a storage system (5). The feeding system, feeding system, and storage system are all connected to the monitoring system. The monitoring system monitors the feeding system, feeding system, and storage system in real time and transmits the monitored data to the control system synchronously. The control system is connected to the feeding system and feeding system. After processing and analyzing the data, the control system transmits instructions to control the feeding system to add ball milled biochar to the storage system and the feeding system to replenish ball milled biochar to the feeding system. After the storage system reaches the predetermined processing value, the control system controls the feeding system and feeding system to shut down, so that the entire system can maintain real-time dynamic and stable operation. The monitoring system (1) includes: a monitoring unit (1-1), a soil parameter monitor (1-2), a soil sulfamethoxazole monitor (1-3), a feed box laser displacement sensor (1-4), and a feed box laser displacement sensor (1-5); wherein the soil parameter monitor (1-2) and the soil sulfamethoxazole monitor (1-3) are arranged in the storage system (5), with a density of 50 m² / s. 2 Install one, and insert it into the soil at a depth of 5~10cm; the laser displacement sensor (1-4) of the feeding box is placed on the side wall of the feeding box (4-1) near the top; the laser displacement sensor (1-5) of the feeding box is placed on the side wall of the feeding box (3-2-1) near the top; the monitoring unit (1-1) collects various information collected by the above monitors and sensors and transmits it to the control system (2) in real time; the storage system (5) is for the sulfamethoxazole contaminated soil to be treated; The control system (2) includes: a central control computing unit (2-1) and a ball mill biochar dosage calculation module (2-2); wherein, the central control computing unit (2-1) receives and processes the information transmitted from the monitoring unit (1-1) and issues instructions to control the real-time operation of the entire system; the ball mill biochar dosage calculation module (2-2) calculates the amount of ball mill biochar added during the operation of the entire system; the feeding system (3) includes: a soil breaking unit (3-1) and a feeding unit (3-2). The soil-breaking unit (3-1) includes: a fixed rod assembly (3-1-1), a rotating shaft (3-1-2), a feeding drive motor (3-1-3), a rotary tiller (3-1-4), a lifting assembly (3-1-5), and a transmission assembly (3-1-6); wherein, the rotary tiller (3-1-4) is fixed on the rotating shaft (3-1-2), and the rotating shaft (3-1-2) can move horizontally along the fixed rod assembly (3-1-1); the rotary tiller (3-1-4), the lifting assembly (3-1-5), and the transmission assembly (3-1-6) are controlled by the feeding drive motor (3-1-3), which is connected to the central control computing unit (2-1) and controlled by it; The feeding unit (3-2) includes: a feeding box (3-2-1), a conveyor (3-2-2), and a conveying hopper (3-2-3); wherein the upper end of the conveyor (3-2-2) is connected to the bottom of the feeding box (3-2-1), and the lower end is connected to the conveying hopper (3-2-3); a baffle is provided on the top side of the conveying hopper (3-2-3); the conveyor (3-2-2) is controlled by the feeding drive motor (3-1-3); the replenishment system (4) includes: a replenishment box (4-1), a conveying pipe (4-2), and an automatic valve (4-3); wherein the upper end of the conveying pipe (4-2) is connected to the bottom opening of the replenishment box (4-1), and the lower end is fixed to the side wall of the feeding box (3-2-1) near the top; the opening and closing of the conveying pipe (4-2) is controlled by the automatic valve (4-3), and the automatic valve (4-3) is connected to the central control computing unit (2-1) and controlled by it.

2. The operating method of the system for dynamic and precise remediation of sulfamethoxazole-contaminated soil using ball-milled biochar according to claim 1, characterized in that, Includes the following steps: Step 1) Monitoring system (1) Obtains relevant data of contaminated soil through soil parameter monitors (1-2). i (i=1, 2, 3...n); Sulfamethoxazole-related data c were obtained using soil sulfamethoxazole monitoring devices (1-3). i (i=1, 2, 3...n), then the monitored data f i Transmitted to the control system in the form of electrical signals (2); Note: f i (i=1, 2, 3...n) are the basic parameters of the contaminated soil; c i (i=1, 2, 3...n) represents the sulfamethoxazole content at each monitoring point in the contaminated soil; Step 2), the control system (2) transmits data f to the monitoring system (1). i If the following conditions are met simultaneously, the judgment result is false, and the dosing unit (3-2) stops the dosing of ball-milled biochar. when f i (i=1, 2, 3……n) ≥ F i (i=1, 2, 3……n) and <C0; If the following conditions are met simultaneously, the judgment result is true, and the dosing unit (3-2) begins the dosing of ball-milled biochar; f i (i=1,2,3……n)< F i (i=1,2,3……n) and >C0 The optimal content of a parameter (mg / m³) in a certain contaminated soil under specific climatic conditions. 3 ; C0 represents the minimum concentration of sulfamethoxazole in a contaminated soil under specific climatic conditions, expressed in mg / m³. 3 ; Step 3) Calculate the dosage of ball-milled biochar: Based on the monitoring results of the soil sulfamethoxazole monitor (1-3), the ball mill biochar dosage calculation module (2-2) calculates the dosage using the following formula: Note: The required amount of ball-milled biochar to be added, in g; k is the activated carbon coefficient, which is related to the type of raw material of ball-milled biochar. The value is taken according to the test results. For straw and rice husk biochar, it is usually taken as 1. q(h) is the density function of the contaminated soil, which varies with soil depth; L is the length of the contaminated soil in meters; B represents the width of the contaminated soil in meters. H represents the depth (m) of the contaminated soil to be treated. Step 4) Based on the calculation results of the ball mill biochar dosage calculation module (2-2) in Step 3), ball mill biochar is added. First, the feeding drive motor (3-1-3) is turned on, and then the feeding system (3) starts working according to the feeding instruction of the control system (2). The lifting component (3-1-5) and the transmission component (3-1-6) adjust the position of the fixed rod component (3-1-1) according to the treatment depth of the contaminated soil, and control the rotary tillage blade (3-1-4) to break the soil. After the soil is broken, the ball mill biochar is accurately added through the conveyor (3-2-2) and the conveying hopper (3-2-3). Step 5) When the feeding box (3-2-1) starts adding ball mill biochar, the system simultaneously begins determining whether to replenish the material. The specific determination steps are as follows: When X 投 >X o If the result is true, the conveying pipe (4-2) will be opened and feeding will begin; When X 投 If the value is less than X1, the result is false, the conveying pipe (4-2) is closed, and material feeding is stopped. Note: X o The distance (m) between the surface of the ball-milled biochar in the feeding box and the laser displacement sensor in the feeding box that initiates feeding. X1 is the distance (m) between the surface of the ball-milled biochar in the feeding box and the laser displacement sensor in the feeding box stopping the feeding. Step 6) Simultaneously, the replenishment box determines the amount of remaining ball-milled activated carbon. The specific determination steps are as follows: When X 补 > If the result is true, it indicates that activated carbon needs to be replenished. When X 补 < If the result is false, a prompt will be displayed to close the window. Note: The distance (in meters) between the surface of the ball-milled biochar in the feeding box and the laser displacement sensor in the feeding box begins to alert the system. The distance (m) between the surface of the ball-milled biochar in the feeding box and the laser displacement sensor in the feeding box to trigger a stop alert. Step 7) After adding the ball mill biochar, turn off the feeding drive motor (3-1-3).

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