System for dynamically and accurately repairing sulfamethoxazole contaminated soil through ball-milled biochar and operation method

Abstract

The invention discloses a system for dynamically and accurately repairing sulfamethoxazole contaminated soil through ball-milled biochar and an operation method, and belongs to the field of contaminated ecological environment protection and soil remediation. The system is composed of a monitoring system, a control system, a feeding system, a material supplementing system and a storage system, the monitoring system monitors the feeding system, the material supplementing system and the storage system in real time and synchronously transmits monitored data to the control system, and the control system processes and analyzes the data and sends the data to the control system. The control system transmits an instruction to control the feeding system to feed ball-milled charcoal into the storage system, the material supplementing system supplements the ball-milled charcoal into the feeding system, and after the storage system reaches a preset processing value, the control system controls the feeding system and the material supplementing system to be closed, so that the whole system keeps real-time, dynamic and stable operation. According to the method, the content of sulfamethoxazole in the polluted soil is monitored in real time, the use amount of the ball-milled charcoal is accurately calculated, accurate, dynamic and automatic feeding of the ball-milled charcoal is achieved, and the method has the advantages of being accurate in feeding amount, saving resources and efficiently removing the sulfamethoxazole.

Description

Technical Field

[0001] The invention belongs to the field of ecological environment protection and contaminated soil remediation, and specifically relates to a remediation method for removing sulfamethoxazole in soil by using ball-milled biochar. Background Art

[0002] As a new type of environmentally friendly carbon material, biochar 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. Studies have shown that biochar can remove antibiotics from soil by adsorption or enhanced biodegradation. However, traditional pyrolytic carbon is limited by inherent defects such as specific surface area, pore structure, and insufficient oxygen-containing functional groups. Its efficient utilization in soil has always been a bottleneck problem. At present, scholars at home and abroad have explored a variety of modification methods to improve the performance of biochar in removing pollutants, mainly chemical modification. However, chemical modification generally involves complex procedures and expensive reagents, and has the disadvantages of high environmental pollution risks and high costs, making it impractical to apply it to soil.

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

[0004] The Chinese patent application with application number CN202311772420.7, "A modified bagasse biochar, preparation method and its application in soil improvement", discloses a modified bagasse biochar, a preparation method and its application in soil improvement. The modified bagasse biochar produced by this invention can efficiently remove aminoglycoside antibiotics in the soil, has a wide range of applications, and is not affected by the soil environment. However, the modification method of this invention is chemical modification, which has low cost-effectiveness and complicated procedures. It is difficult to produce biochar on a large scale, and the feasibility of practical application is low.

[0005] The Chinese patent application "A method for remediating soil contaminated by fluoroquinolone antibiotics" with application number CN202211070963.X discloses a method for remediating soil contaminated by fluoroquinolone antibiotics; a certain proportion of biochar is added to the soil contaminated by fluoroquinolone antibiotics, light is provided, and the soil is kept at a certain moisture content, and the fluoroquinolone antibiotics in the soil are removed by adsorption and photochemical reaction. However, the invention does not pay attention to the changes and effects of the microbial structure in the soil and the soil microbial community structure after adding biochar. At the same time, the amount of biochar added is not easy to control, which is easy to cause waste of resources.

[0006] The Chinese patent application with application number CN202410413752.4, "A method for improving soil using biochar in collaboration with microbial carbonate mineralizing bacteria", discloses a method for using carbonate mineralizing bacteria to accelerate mineralization and crystallization, physically promote the formation of large soil aggregates, improve soil porosity, chemically continuously increase the soil calcium carbonate content and fertility, and use biochar to improve the carbon-nitrogen ratio balance; biologically, the microbial community can be reconstructed to improve the colonization ability of microorganisms, thereby achieving the purpose of improving soil. The method of using biochar in collaboration with microbial carbonate mineralizing bacteria to improve soil. However, the invention does not focus on the problem of antibiotic pollution in the soil, does not give play to the huge application potential of biochar in the remediation of antibiotic-contaminated soil, and cannot make judgments based on the actual situation of the contaminated soil to achieve accurate dynamic remediation. Summary of the invention

[0007] Purpose of the invention: In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a system and operation method for dynamic and precise remediation of sulfamethoxazole contaminated soil by ball-milled biochar. The method can accurately control the amount of ball-milled biochar required for the contaminated soil to be treated, and monitor the sulfamethoxazole content in the soil in real time, with the advantages of accurate dosage, resource saving, and efficient removal.

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

[0009] A system for dynamic and precise restoration of sulfamethoxazole-contaminated soil by ball-milled biochar, the system comprising a monitoring system (1), a control system (2), a feeding system (3), a feeding system (4), and a storage system (5); the monitoring system monitors the feeding system, the feeding system, and the storage system in real time, and synchronously transmits the monitored data to the control system; after the control system processes and analyzes the data, it transmits instructions to control the feeding system to add ball-milled biochar to the storage system and the feeding system to replenish the 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 feeding system to be closed, so that the entire system maintains real-time dynamic and stable operation.

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

[0011] Specifically, the monitoring unit (1-1) collects various types of information collected by the above monitors and sensors and transmits them to the control system (2) in real time. The storage system (5) is the sulfamethoxazole-contaminated soil to be treated.

[0012] The control system (2) comprises: a central control calculation unit (2-1) and a ball-milled biochar dosage calculation module (2-2). The central control calculation unit (2-1) receives and processes information transmitted by the monitoring unit (1-1), and issues instructions 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 operation of the entire system.

[0013] The feeding system (3) comprises: 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 and operated by the feeding drive motor (3-1-3), and the feeding drive motor (3-1-3) is connected to the central control computing unit (2-1) and controlled and operated by it.

[0016] The dosing unit (3-2) comprises: 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 to run by a feeding drive motor (3-1-3).

[0017] The feeding system (4) comprises: a feeding box (4-1), a delivery pipe (4-2), and an automatic valve (4-3). The upper end of the delivery 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 delivery 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.

[0018] A method for operating a system for dynamic and precise remediation of sulfamethoxazole-contaminated soil by ball-milled biochar, 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); through soil sulfamethoxazole monitor (1-3), obtain relevant data c i (i=1,2,3……n), and then the monitored data f i Transmitted to the control system (2) in the form of an electrical signal;

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

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

[0022] Step 2), the control system (2) receives the data transmitted by the monitoring system (1) i The judgment is based on the following:

[0023] When f i (i=2,3)≥F i (i=2,3)

[0024] and

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

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

[0027] and

[0028] Then, the judgment result is true, and the dosing unit (3-2) starts to dosing the ball-milled biochar;

[0029] F i is the suitable content of the parameter for a certain contaminated soil under certain climatic conditions, mg / m 3 ;

[0030] C0 is the minimum contamination concentration of sulfamethoxazole in a contaminated soil under certain climatic conditions, mg / m 3

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

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

[0033]

[0034] Note: c i ' is the amount of ball-milled biochar required to be added, g;

[0035] k is the activated carbon coefficient, which is related to the type of raw materials of ball-milled biochar and is determined according to test results. Straw and rice husk biochar are usually set to 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 m;

[0038] B is the width of the contaminated soil in m;

[0039] H is the depth of contaminated soil to be treated in m;

[0040] Step 4), first turn on the feeding drive motor (3-1-3), 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 depth of the contaminated soil to be treated, and control the rotary tiller (3-1-4) to break the soil. After breaking the soil, the ball-milled 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-milled biochar dosage calculation module (2-2).

[0041] Step 5), when the feeding box (3-2-1) starts to add the ball-milled biochar, it also starts to judge whether to add feed. The specific judgment steps are as follows:

[0042] When X 投 >X o When , the judgment result is true, the delivery pipe (4-2) is opened and the material filling begins;

[0043] When X 投 When <X1, the judgment result is false, the conveying pipe (4-2) is closed, and the feeding is stopped;

[0044] Note: X o The distance between the surface of the ball-milled biochar in the feeding box and the laser displacement sensor of the feeding box where feeding starts, m;

[0045] X1 is the distance between the surface of the ball-milled biochar in the feeding box and the laser displacement sensor in the feeding box when feeding stops, m;

[0046] Step 6), at the same time, the feeding box determines the amount of remaining ball-milled activated carbon, and the specific determination steps are as follows:

[0047] When X 补 >X0′, the judgment result is true, and it is reminded that activated carbon needs to be added;

[0048] When X 补 When <X1′, the judgment result is false and the reminder is closed;

[0049] Note: X0′ is the distance from the surface of the ball-milled biochar in the feeding box to the start of the laser displacement sensor of the feeding box, m;

[0050] X1′ is the distance between the surface of the ball-milled biochar in the feeding box and the laser displacement sensor of the feeding box to stop reminding, m;

[0051] Step 7) After the addition of the ball-milled biochar is completed, the feeding drive motor (3-1-3) is turned off.

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

[0053] (1) The automated dynamic remediation of sulfamethoxazole-contaminated soil was achieved. By setting up a monitoring system, a control system, a feeding system, a feeding system and a storage system, the traditional method of manually adding ball-milled biochar was replaced, and the real-time dynamic monitoring of the sulfamethoxazole content in the contaminated soil was achieved. The ball-milled biochar was accurately added for remediation, which has the advantages of accurate dosage, resource saving and efficient removal.

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

[0055] (3) The present invention effectively ensures the removal efficiency of sulfamethoxazole while avoiding the problem of excessive addition of ball-milled biochar, thereby saving resources. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0057] Figure 2 This is a working principle diagram of a system for dynamic and precise remediation of sulfamethoxazole-contaminated soil by ball-milled biochar;

[0058] Figure 3 This is a flow chart of the operation of a system for dynamic and precise remediation of sulfamethoxazole-contaminated soil by ball-milled biochar;

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

[0060] Note: Monitoring system-1, control system-2, feeding system-3, feeding 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 calculation unit-2-1, ball milled biochar dosage calculation module-2-2.

[0063] Dosing 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 component 3-1-5, transmission component 3-1-6;

[0064] Feeding box-4-1, conveying pipe-4-2, automatic valve-4-3. DETAILED DESCRIPTION

[0065] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings and embodiments.

[0066] Example 1

[0067] Reference Figure 3 As shown, a system for dynamic and precise remediation of sulfamethoxazole-contaminated soil by ball-milled biochar includes a monitoring system 1, a control system 2, a feeding system 3, a feeding system 4, and a storage system 5; the control system 2, the feeding system 3, the feeding system 4, and the storage system 5 are all connected to the monitoring system 1. The monitoring system monitors the feeding system, the feeding system, and the storage system in real time, and synchronously transmits the monitored data to the control system, the control system is connected to the feeding system and the feeding system, and after the control system processes and analyzes the data, the transmission instruction controls the feeding system to add ball-milled biochar to the storage system, and the feeding system to add ball-milled biochar to the feeding system. After the storage system reaches the predetermined processing value, the control system controls the feeding system and the feeding system to shut down, so that 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 feeding box laser displacement sensor 1-4, and a feeding 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, and the arrangement density is 50 / m 2, the arrangement depth is inserted into the soil 5 to 10 cm; the feeding box laser displacement sensor 1-4 is arranged on the side wall of the feeding box 4-1 near the top; the feeding box laser displacement sensor 1-5 is arranged on the side wall of the feeding box 3-2-1 near the top; the monitoring unit 1-1 collects various types of information collected by the above monitors and sensors and transmits them to the control system 2 in real time. The storage system 5 is the sulfamethoxazole contaminated soil to be treated.

[0069] The control system 2 includes: a central control calculation unit 2-1 and a ball-milled biochar dosage calculation module 2-2. The central control calculation unit 2-1 receives and processes the information transmitted by the monitoring unit 1-1, and issues instructions 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 operation of the entire system. Figure 1 shown.

[0070] The feeding system 3 comprises: 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 blade 3-1-4, a lifting assembly 3-1-5, and a transmission assembly 3-1-6; wherein, the rotary blade 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 blade 3-1-4, the lifting assembly 3-1-5, and the transmission assembly 3-1-6 are controlled and operated by the feeding drive motor 3-1-3, and the feeding drive motor 3-1-3 is connected to the central control computing unit 2-1 and controlled and operated by it.

[0072] The dosing 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 the feeding drive motor 3-1-3.

[0073] The feeding system 4 comprises: a feeding box 4-1, a delivery pipe 4-2, and an automatic valve 4-3. The upper end of the delivery 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 delivery 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.

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

[0075] Step 1), the monitoring system (1) obtains relevant data of contaminated soil through soil parameter monitor (1-2) i (i=1,2,3……n); through the soil sulfamethoxazole monitor (1-3), obtain the relevant data of sulfamethoxazole c i (i=1,2,3……n), and then the monitored data f i Transmitted to the control system (2) in the form of an electrical signal;

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

[0077] c i (i=1, 2, 3...n) is the sulfamethoxazole content of 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 reception judgment. If the following conditions are met at the same time, the system will not work and repeat step 1.

[0079] f i (i=2,3)≥F i (i=2,3), and

[0080] Step 3), if the following conditions are met at the same time, the dosing unit (3-2) starts to add the ball-milled biochar;

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

[0082] F i is the suitable content of the parameter for a certain contaminated soil under certain climatic conditions, mg / m 3 ;

[0083] C0 is the minimum contamination concentration of sulfamethoxazole in a contaminated soil under certain climatic conditions, mg / m 3 .

[0084] Step 4), calculate the amount of ball-milled biochar added:

[0085] According to the monitoring results of the soil sulfamethoxazole monitor (1-3), the ball-milled biochar dosage calculation module (2-2) is calculated according to the following formula:

[0086]

[0087] Note: c i ' is the amount of ball-milled biochar required to be added, g;

[0088] k is the activated carbon coefficient, which is taken as 1 using rice husk ball-milled biomass;

[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 m;

[0091] B is the width of the contaminated soil in m;

[0092] H is the depth of contaminated soil to be treated in m.

[0093] Step 5), based on the calculation result of the ball-milled biochar dosage calculation module (2-2) determined in step 4), the ball-milled biochar is added, first the feeding drive motor (3-1-3) is turned on, and then the feeding system (3) starts to work 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 depth of the contaminated soil to be treated, and the rotary tiller (3-1-4) is controlled to break the soil. After the breaking of the soil is completed, the ball-milled 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) starts to add the ball-milled biochar, it also starts to judge whether to add feed, X 投 <X1, the judgment result is false, the conveying pipe (4-2) is closed, and the feeding is stopped;

[0095] Note: X1 is the distance between the surface of the ball-milled biochar in the feeding box and the laser displacement sensor of the feeding box when feeding stops, m.

[0096] Step 7), at the same time, the feed box determines the amount of remaining ball-milled activated carbon, X 补 <X1′, the judgment result is false and the reminder is closed;

[0097] Note: X1′ is the distance between the surface of the ball-milled biochar in the feeding box and the laser displacement sensor in the feeding box when it stops reminding, m.

[0098] Step 8), ball-milled biochar is added, and the soil sulfamethoxazole monitor (1-3) monitors the relevant data in real time c i (i=1,2,3……n), and then the monitored data f i Transmitted to the control system (2). The control system makes data judgment, The dosing unit (3-2) stops adding the ball-milled biochar.

[0099] The above description of various embodiments of the present application is provided to those skilled in the art for the purpose of description. It is not intended to be exhaustive or to limit the present invention to a single disclosed embodiment. As mentioned above, various substitutions or changes of the present application will be apparent to those skilled in the art to which the above-mentioned technology belongs. Therefore, although some alternative embodiments have been specifically discussed, other embodiments will be apparent, or those skilled in the art will be relatively easy to derive. The present application is intended to include all substitutions, modifications, and changes of the present invention discussed herein, as well as other embodiments falling within the spirit and scope of the above-mentioned application.

[0100] Although the present application has been described through embodiments, those skilled in the art will appreciate that there are many modifications and variations to the present application without departing from the spirit of the present application, and it is intended that the appended claims include these modifications and variations without departing from the spirit of the present application.

Claims

1. A system for dynamic and precise remediation of sulfamethoxazole-contaminated soil by ball-milled biochar, characterized in that: The system comprises a monitoring system (1), a control system (2), a feeding system (3), a feeding system (4), and a storage system (5); the feeding system, the feeding system, and the storage system are all connected to the monitoring system; the monitoring system monitors the feeding system, the feeding system, and the storage system in real time, and synchronously transmits the monitored data to the control system; the control system is connected to the feeding system and the feeding system, and after the control system processes and analyzes the data, it transmits instructions to control the feeding system to add ball-milled biochar to the storage system and the feeding system to add 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 feeding system to be closed, so that the entire system maintains real-time dynamic and stable operation.

2. The system for dynamic and precise remediation of sulfamethoxazole-contaminated soil by ball-milled biochar according to claim 1, characterized in that: The monitoring system (1) comprises: a monitoring unit (1-1), a soil parameter monitor (1-2), a soil sulfamethoxazole monitor (1-3), a feeding box laser displacement sensor (1-4), and a feeding box laser displacement sensor (1-5); wherein the soil parameter monitor (1-2) and the soil sulfamethoxazole monitor (1-3) are arranged in a storage system (5), and the arrangement density is 50 / m 2 , the arrangement depth is inserted into the soil 5 to 10 cm; the feeding box laser displacement sensor (1-4) is arranged on the side wall of the feeding box (4-1) near the top; the feeding box laser displacement sensor (1-5) is arranged on the side wall of the feeding box (3-2-1) near the top; the monitoring unit (1-1) collects various types of information collected by the above monitors and sensors and transmits them to the control system (2) in real time. The storage system (5) is the sulfamethoxazole contaminated soil to be treated.

3. The system for dynamic and precise remediation of sulfamethoxazole-contaminated soil by ball-milled biochar according to claim 1, characterized in that: The control system (2) comprises: a central control calculation unit (2-1) and a ball-milled biochar dosage calculation module (2-2); wherein the central control calculation unit (2-1) receives and processes information transmitted by the monitoring unit (1-1), and issues instructions to control the real-time operation of the entire system; and the ball-milled biochar dosage calculation module (2-2) calculates the dosage of the ball-milled biochar during the operation of the entire system.

4. The system for dynamic and precise remediation of sulfamethoxazole-contaminated soil by ball-milled biochar according to claim 1, characterized in that: The feeding system (3) comprises: a soil breaking unit (3-1) and a feeding unit (3-2); The soil-breaking unit (3-1) comprises: 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 to operate by the feeding drive motor (3-1-3), and the feeding drive motor (3-1-3) is connected to the central control computing unit (2-1) and is controlled to operate thereby. The dosing unit (3-2) comprises: 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); and the conveyor (3-2-2) is controlled to operate by a feeding drive motor (3-1-3).

5. The system for dynamic and precise remediation of sulfamethoxazole-contaminated soil by ball-milled biochar according to claim 1, characterized in that: The feeding system (4) comprises: a feeding 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 feeding box (4-1), and the lower end is fixed on 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.

6. The operating method of a system for dynamically and accurately remediating sulfamethoxazole-contaminated soil using ball-milled biochar according to claim 1, characterized in that: The following steps are involved: Step 1), the monitoring system (1) obtains relevant data of contaminated soil through soil parameter monitor (1-2) i (i=1,2,3……n); through the soil sulfamethoxazole monitor (1-3), obtain the relevant data of sulfamethoxazole c i (i=1,2,3……n), and then the monitored data f i Transmitted to the control system (2) in the form of an electrical signal; Note: i (i=1,2,3……n) are the basic parameters of contaminated soil; c i (i=1, 2, 3...n) is the sulfamethoxazole content of each monitoring point in the contaminated soil; Step 2), the control system (2) receives the data transmitted by the monitoring system (1) i A determination is made, and if the following conditions are met at the same time, the determination result is false, and the dosing unit (3-2) stops adding the ball-milled biochar; This f i (i=2,3) ≥ F i (i = 2, 3) and When the following conditions are met at the same time, the judgment result is true, and the dosing unit (3-2) starts to add ball-milled biochar; f i (i=2,3)<F i (i=2,3) and F i is the suitable content of the parameter for a certain contaminated soil under certain climatic conditions, mg / m 3 ; C0 is the minimum contamination concentration of sulfamethoxazole in a contaminated soil under certain climatic conditions, mg / m 3 ; Step 3) Calculate the amount of ball-milled biochar added: According to the monitoring results of the soil sulfamethoxazole monitor (1-3), the ball-milled biochar dosage calculation module (2-2) is calculated according to the following formula: Note: c i ′ is the amount of ball-milled biochar required to be added, g; k is the activated carbon coefficient, which is related to the type of raw materials of ball-milled biochar and is determined according to test results. Straw and rice husk biochar are usually set to 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 m; B is the width of the contaminated soil in m; H is the depth of contaminated soil to be treated in m; Step 4), based on the calculation result of the ball-milled biochar dosage calculation module (2-2) in step 3), the ball-milled biochar is added, first the feeding drive motor (3-1-3) is turned on, and then the feeding system (3) starts to work 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 depth of the contaminated soil to be treated, and the rotary tiller (3-1-4) is controlled to break the soil. After the breaking of the soil is completed, the ball-milled 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 to add the ball-milled biochar, it also starts to judge whether to add feed. The specific judgment steps are as follows: When X 投 >X o When , the judgment result is true, the delivery pipe (4-2) is opened and the material filling begins; When X 投 When <X1, the judgment result is false, the conveying pipe (4-2) is closed, and the feeding is stopped; Note: X o The distance between the surface of the ball-milled biochar in the feeding box and the laser displacement sensor of the feeding box where feeding starts, m; X1 is the distance between the surface of the ball-milled biochar in the feeding box and the laser displacement sensor in the feeding box when feeding stops, m; Step 6), at the same time, the feeding box determines the amount of remaining ball-milled activated carbon, and the specific determination steps are as follows: When X 补 >X0′, the judgment result is true, and it is reminded that activated carbon needs to be added; When X 补 When <X1′, the judgment result is false and the reminder is closed; Note: X0′ is the distance from the surface of the ball-milled biochar in the feeding box to the start of the laser displacement sensor of the feeding box, m; X1′ is the distance between the surface of the ball-milled biochar in the feeding box and the laser displacement sensor of the feeding box to stop reminding, m; Step 7) After the addition of the ball-milled biochar is completed, the feeding drive motor (3-1-3) is turned off.

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