Polluted site in-situ remediation nanometer preparation intelligent injection equipment

Abstract

The invention discloses intelligent injection equipment for a polluted site in-situ remediation nano preparation, which relates to the technical field of soil and underground water in-situ remediation and comprises a main pipeline, a central control system, at least one water distribution branch pipe and at least one dosing pipe fitting, the main pipeline is used for introducing clear water; the water distribution branch pipe is communicated with the dosing pipe fitting; each dosing pipe fitting comprises a pure water branch pipe and a mixed branch pipe which are arranged in parallel, the pure water branch pipe is used for circulating clear water, and the mixed branch pipe is used for circulating a nano preparation solution; a mixing driving part on the mixing branch pipe can suck a nano preparation concentrated solution under the driving action of internal water flow and automatically mix the nano preparation concentrated solution with clear water according to a proportion; the central control system can receive flow and / or pressure information on the main pipeline and the water distribution branch pipes in real time; and the central control system can control the circulation states of the main pipeline, the water distribution branch pipe and the dosing pipe fitting. According to the intelligent injection equipment for the in-situ remediation nano preparation of the contaminated site, the treatment effect of the contaminated site can be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of in-situ remediation technology for soil and groundwater, and in particular to an intelligent injection device for nano-prepared agents for in-situ remediation of contaminated sites. Background Technology

[0002] With the rapid development of modern industry and agriculture, various pollutants enter soil and groundwater, posing potential dangers and adverse effects on people's lives and the environment. How to effectively reduce or remove pollutants from soil and groundwater is receiving increasing attention. In recent years, nanoremediation technology has made significant progress in the field of environmental science, especially the application of nanomaterials in the remediation of contaminated sites, which is currently a research hotspot in environmental pollution remediation technology. For example, nano-zero-valent iron preparations have high reactivity and the ability to rapidly degrade various pollutants, including halogenated olefins, halogenated aromatic hydrocarbons, organochlorine pesticides, and other organic pollutants. They can also be used to remove inorganic pollutants such as nitrate nitrogen and heavy metal chromium from groundwater.

[0003] However, in practical applications, nanomaterial formulations are difficult to control during use. Improper handling can easily lead to agglomeration and oxidation, significantly reducing their reactivity and effectiveness. The technical methods and implementation procedures for injecting nanomaterials into soil and groundwater still face several unresolved issues. For example, poor dispersion stability, uneven delivery, and insufficient injection precision of nanomaterial formulations hinder the large-scale engineering application of this technology.

[0004] Therefore, developing specialized nano-remediation equipment capable of precise injection, uniform dispersion, and intelligent process control of nano-formulations has become a key step in moving this technology from the laboratory to engineering applications. The development of advanced in-situ injection equipment not only helps to fully realize the remediation potential of nanomaterials but also improves the overall efficiency and controllability of contaminated site remediation, which is of great significance for promoting the innovation and development of environmental pollution remediation technologies. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent injection device for in-situ remediation of contaminated sites using nano-prepared agents, in order to solve the problems existing in the prior art and improve the remediation effect of contaminated sites.

[0006] To achieve the above objectives, the present invention provides the following solution: This invention provides an intelligent injection device for in-situ remediation of contaminated sites using nano-prepared agents, comprising a main pipeline, a central control system, at least one water distribution branch pipe, and at least one dosing fitting. The main pipeline is used to supply clean water, and is equipped with a first control component for controlling the clean water delivery status on the main pipeline and a first monitoring component for monitoring pressure and / or flow information during clean water delivery. The water distribution branch pipe is connected to the main pipeline, and each branch pipe is equipped with a second control component for controlling the clean water delivery status on the corresponding branch pipe and a second monitoring component for monitoring pressure and / or flow information during clean water delivery on the corresponding branch pipe. The inlet of the dosing fitting is connected to the outlet of one of the water distribution branch pipes, and the outlet of each dosing fitting... The water outlet is used to discharge clean water or nano-preparation solution; each of the dosing pipes includes a pure water branch pipe and a mixing branch pipe arranged in parallel. The pure water branch pipe is used to circulate clean water, and the mixing branch pipe is used to circulate and transport the nano-preparation solution mixed with clean water; both the pure water branch pipe and the mixing branch pipe are equipped with a third control component for controlling the on / off state, and the mixing branch pipe is equipped with a mixing drive component. The mixing drive component can draw in the nano-preparation concentrate under the drive of internal water flow and automatically mix it with clean water according to a certain ratio; the central control system is communicatively connected to both the first monitoring component and the second monitoring component, and can receive corresponding monitoring information in real time; the central control system is also communicatively connected to the first control component, the second control component, and the third control component, and can control their actions.

[0007] Preferably, there are multiple water distribution branch pipes and multiple chemical dosing pipes, and the multiple water distribution branch pipes are connected in parallel to the main pipeline, and the water distribution branch pipes and chemical dosing pipes are connected in a one-to-one correspondence.

[0008] Preferably, the main pipeline includes a manifold and at least two branch pipelines connected in parallel, both branch pipelines being used to supply clean water, both branch pipelines being connected to the manifold, and each water distribution branch pipe being connected to the manifold; each branch pipeline is equipped with the first control component and the first monitoring component.

[0009] Preferably, the first control component includes a first solenoid valve and a variable frequency injection pump. The first solenoid valve can control the on / off state of the corresponding diversion pipeline, and the variable frequency injection pump can control the water injection information on the corresponding diversion pipeline.

[0010] Preferably, the first monitoring component includes a first pressure monitoring element and at least one first flow monitoring element; the first pressure monitoring element is used to acquire pressure information corresponding to the branch pipeline, and the first flow monitoring element is used to acquire flow information corresponding to the branch pipeline.

[0011] Preferably, the second control component includes a second solenoid valve, which is used to control the on / off state of the corresponding water distribution branch pipe.

[0012] Preferably, the second monitoring component includes a second pressure monitoring element and at least one second flow monitoring element, wherein the second pressure monitoring element is used to acquire pressure information corresponding to the water distribution branch pipe, and the second flow monitoring element is used to acquire flow information corresponding to the water distribution branch pipe.

[0013] Preferably, the third control component is a diaphragm valve, and the mixing drive component is a hydraulic mixing proportioning pump; a diaphragm valve is provided on the pure water branch pipe, and a diaphragm valve is provided on both sides of the hydraulic mixing proportioning pump on the mixing branch pipe.

[0014] Preferably, it also includes a monitoring system, which is communicatively connected to the central control system. The monitoring system is used to monitor the flow field characteristics and water quality parameters within the remediation site and can transmit them to the central control system.

[0015] Preferably, it further includes a water storage tank and a nano-preparation tank; the water storage tank stores clean water and is connected to the water inlet of the main pipeline; the nano-preparation tank stores concentrated nano-preparation solution and is connected to the drug inlet of the mixing drive component, and the nano-preparation tank is equipped with a stirring component that can stir the concentrated nano-preparation solution.

[0016] The present invention achieves the following technical effects compared to the prior art: The intelligent injection equipment for in-situ remediation of contaminated sites using nano-prepared agents provided by this invention allows clean water to enter the distribution branch pipe through the main pipeline and be controlled at the dosing fitting to either exit from the pure water branch pipe or the mixing branch pipe, enabling injection with or without added chemicals. When chemical injection is required, the mixing drive component, driven solely by pressurized water flow, automatically adds the concentrated nano-prepared agent to the mixing branch pipe according to the specified ratio, mixes it with clean water, and injects it. No electricity is required; only water pressure serves as the power source for adding the nano-prepared agent, reducing energy consumption and emissions during the remediation process. Furthermore, this design solves the common problems of poor dispersibility and easy sedimentation of nano-prepared agents after dilution and before injection. During the dilution and mixing process of the nano-prepared agent with clean water, the impact of the pressurized water flow ensures thorough mixing of the concentrated solution, thereby preventing the nano-prepared agent from settling or floating during injection, which could lead to aggregation or separation from the water. This not only ensures that the diluted nano-prepared agent has good suspension and dispersion during injection, but also delivers it to the injection well in a constant, uniform, and proportional manner for in-situ injection, improving the treatment effect. The addition point of the nano-prepared agent, i.e. the mixing drive component, is close to the injection end. This setting can avoid the impact and damage caused by the nano-prepared agent to its electronic components such as the first control component or the first monitoring component in the main pipeline due to prolonged contact. This simplifies the structure of the nano-injection equipment, reduces the probability of damage to precision components and the frequency of replacement and maintenance, and greatly reduces equipment costs. In addition, the pressure and / or flow information of the first monitoring component on the main pipeline and the second monitoring component on the water distribution branch pipe are obtained through the central control system to obtain the injection status in a timely manner, and intelligent control is achieved by controlling the actions of the first control component, the second control component, and the third control component. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram showing the connection of the water distribution branch pipe and the dosing pipe fittings of the intelligent injection equipment for in-situ remediation of contaminated sites using nano-prepared agents provided in Embodiment 1 of the present invention. Figure 2 This is a schematic diagram of the main pipeline of the intelligent injection equipment for in-situ remediation of contaminated sites using nano-prepared agents provided in Embodiment 1 of the present invention. Figure 3 This is a schematic diagram of the structure of the water storage tank provided in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the structure of the nano-formulation pool provided in Embodiment 1 of the present invention; Figure 5A frontal schematic diagram of a container provided in Embodiment 1 of the present invention; Figure 6 A schematic diagram of the rear of a container provided in Embodiment 1 of the present invention; Figure 7 The left side view of the container provided in Embodiment 1 of the present invention is shown.

[0019] In the diagram: 1-Main pipe; 11-First control component; 12-First monitoring component; 13-Manifold; 14-Branch pipe; 15-First solenoid valve; 16-Variable frequency injection pump; 17-First pressure monitoring component; 18-First flow monitoring component; 181-First electromagnetic flowmeter; 182-First float flowmeter; 2-Branch pipe; 21-Second control component; 22-Second monitoring component; 23-Second solenoid valve; 24-Second pressure monitoring component ; 25-Second flow monitoring component; 251-Second electromagnetic flow meter; 252-Second float flow meter; 3-Dosing pipe fitting; 31-Pure water branch pipe; 32-Mixing branch pipe; 33-Third control component; 34-Mixing drive component; 35-First diaphragm valve; 36-Second diaphragm valve; 37-Third diaphragm valve; 38-Dosing port; 4-Central control system; 5-Water storage tank; 6-Nano-formulation tank; 7-Agitator component; 8-Level monitoring component; 9-Container. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] The purpose of this invention is to provide an intelligent injection device for in-situ remediation of contaminated sites using nano-prepared agents, in order to solve the problems existing in the prior art and improve the remediation effect of contaminated sites.

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Example 1 This embodiment provides an intelligent injection device for in-situ remediation of contaminated sites using nano-prepared agents. Please refer to [link to relevant documentation]. Figures 1-2The system includes a main pipeline 1, a central control system 4, at least one water distribution branch pipe 2, and at least one dosing fitting 3. The main pipeline 1 is used to supply clean water. A first control component 11 is installed on the main pipeline 1 to control the clean water delivery status, and a first monitoring component 12 is installed to monitor the pressure and / or flow rate information during clean water delivery. The water distribution branch pipes 2 are connected to the main pipeline 1. Each water distribution branch pipe 2 is equipped with a second control component 21 to control the clean water delivery status and a second monitoring component 22 to monitor the pressure and / or flow rate information during clean water delivery. The inlet of the dosing fitting 3 is connected to the outlet of a water distribution branch pipe 2, and the outlet of each dosing fitting 3 is used to discharge clean water or a nano-preparation solution. The drug delivery system 3 includes a pure water branch pipe 31 and a mixing branch pipe 32 connected in parallel. The pure water branch pipe 31 is used to transport clean water, and the mixing branch pipe 32 is used to transport the nano-preparation solution mixed with clean water. Both the pure water branch pipe 31 and the mixing branch pipe 32 are equipped with a third control component 33 for controlling the on / off state, and the mixing branch pipe 32 is equipped with a mixing drive component 34. The mixing drive component 34 can automatically mix the nano-preparation concentrate it absorbs with clean water according to the ratio under the driving action of the clean water inside. The central control system 4 is communicatively connected to the first monitoring component 12 and the second monitoring component 22, and can receive the corresponding monitoring information in real time. The central control system 4 is also communicatively connected to the first control component 11, the second control component 21 and the third control component 33, and can control and execute commands on them.

[0024] Clean water enters the distribution branch pipe 2 through the main pipe 1 and is controlled at the dosing fitting 3 to be discharged from the pure water branch pipe 31 or the mixing branch pipe 32, realizing injection with or without dosing. When dosing injection is required, the mixing drive component 34 is driven only by pressurized water flow to realize the function of automatically adding the concentrated nano-preparation to the mixing branch pipe 32 according to the set ratio, mixing with clean water and injecting it. No electricity is required, only water pressure is used as the power for adding nano-preparation, reducing energy consumption and emissions during the repair process. Moreover, during the dilution and mixing of nano-preparation with clean water, the impact of pressurized water flow ensures that the concentrate is fully mixed, thereby avoiding the agglomeration or separation of nano-preparation from water caused by sedimentation or floating during injection. This not only ensures that the diluted nano-prepared agent has good suspension and dispersion during injection, but also delivers it to the injection well in a constant, uniform, and proportional manner for in-situ injection, improving the treatment effect. The addition point of the nano-prepared agent, namely the mixing drive component 34, is close to the injection end. This setting can avoid the impact and damage caused to the nano-prepared agent by prolonged contact with electronic components such as the first control component 11 or the first monitoring component 12 in the main pipeline 1. This simplifies the structure of the nano-injection equipment, reduces the probability of damage to precision components and the frequency of replacement and maintenance, and greatly reduces equipment costs. In addition, the pressure and / or flow information of the first monitoring component 12 on the main pipeline 1 and the second monitoring component 22 on the water distribution branch pipe 2 are obtained through the central control system 4 to obtain the injection status in a timely manner, and intelligent control is achieved by controlling the actions of the first control component 11, the second control component 21, and the third control component 33.

[0025] In the optional scheme of this embodiment, more preferably, multiple water distribution branch pipes 2 and chemical dosing pipes 3 are provided, and multiple water distribution branch pipes 2 are connected in parallel to the main pipeline 1, and the water distribution branch pipes 2 and chemical dosing pipes 3 are connected in a one-to-one correspondence.

[0026] By setting up multiple water distribution branch pipes 2 and corresponding multiple dosing pipe fittings 3 in series, it is possible to simultaneously remediate multiple contaminated sites or add different nano-preparations using different dosing pipe fittings 3. The water distribution branch pipes 2 are connected to the main pipeline 1 in parallel using quick-connect couplings. The water distribution branch pipes 2 and dosing pipe fittings 3 are connected and used together. The actual number of water distribution branch pipes 2 and dosing pipe fittings 3 can be adjusted according to the site remediation needs. Each dosing pipe fitting 3 can inject the same nano-preparation or inject different types and concentrations of nano-preparations. In this embodiment, eight water distribution branch pipes 2 and eight corresponding dosing pipe fittings 3 are set up, and the top of each water distribution branch pipe 2 and the top of each dosing pipe fitting 3 are connected in series through pipelines.

[0027] In the optional scheme of this embodiment, more preferably, the main pipeline 1 includes a manifold 13 and at least two branch pipelines 14 arranged in parallel. Both branch pipelines 14 are used to introduce clean water and are connected to the manifold 13. Each water distribution branch pipe 2 is connected to the manifold 13. Each branch pipeline 14 is provided with a first control component 11 and a first monitoring component 12.

[0028] The system incorporates a manifold 13 to connect multiple water distribution branches 2 in parallel, and at least two branch pipes 14 to adjust the flow rate and pressure of clean water on the manifold 13 as needed. Specifically, by controlling the action of the first control component 11 on each branch pipe 14, flow can be supplied to a single branch pipe 14 or both simultaneously. The first monitoring component 12 on each branch pipe 14 monitors the flow rate and pressure of clean water during delivery, thus adjusting the flow rate and pressure of clean water during delivery on the manifold 13. Furthermore, one branch pipe 14 can be used as a backup and activated when the other branch pipes 14 are under maintenance or shut down, improving the continuity of repair and treatment. Figure 2 The clear water outlet (upper right) of the central main road 1 and Figure 1 The upper left port of the central manifold 13 is connected via a pipeline.

[0029] In the optional scheme of this embodiment, more preferably, the first control component 11 includes a first solenoid valve 15 and a variable frequency injection pump 16. The first solenoid valve 15 can control the opening and closing of the corresponding diversion pipeline 14, and the variable frequency injection pump 16 can control the water injection parameters on the corresponding diversion pipeline 14.

[0030] Specifically, the opening and closing of the diversion pipeline 14 is controlled by the first solenoid valve 15, and the injection pressure and flow rate of the clean water in the diversion pipeline 14 are adjusted by the variable frequency injection pump 16. The maximum injection flow rate of a single variable frequency injection pump can be 10-15 m³ / h. 3 / hour, the maximum head range of a single pump is 30-40m; two injection pumps can be operated in parallel to increase the total injection flow rate, with a theoretical maximum total injection flow rate range of 20-30m. 3 / Hour.

[0031] In an optional embodiment, more preferably, the first monitoring component 12 includes a first pressure monitoring element 17 and at least one first flow monitoring element 18; the first pressure monitoring element 17 is used to obtain the pressure information of the corresponding diversion pipeline 14, and the first flow monitoring element 18 is used to obtain the flow information of the corresponding diversion pipeline 14.

[0032] The first flow monitoring device 18 may include a first electromagnetic flowmeter 181 and a first float flowmeter 182 to achieve accurate monitoring of flow information on the diversion pipeline 14. The first pressure monitoring device 17 is set as a pressure transmitter to achieve accurate monitoring of pressure information on the diversion pipeline 14.

[0033] In the optional embodiments of this example, the second control component 21 preferably includes a second solenoid valve 23, which is used to control the opening and closing of the corresponding water distribution branch pipe 2 so as to control whether the corresponding water distribution branch pipe 2 is in operation as needed.

[0034] In the optional scheme of this embodiment, more preferably, the second monitoring component 22 includes a second pressure monitoring element 24 and at least one second flow monitoring element 25. The second pressure monitoring element 24 is used to obtain the pressure information of the corresponding water distribution branch pipe 2, and the second flow monitoring element 25 is used to obtain the flow information of the corresponding water distribution branch pipe 2.

[0035] The second flow monitoring device 25 may include a second electromagnetic flow meter 251 and a second float flow meter 252 to achieve accurate monitoring of flow information on the water distribution branch pipe 2; the second pressure monitoring device 24 is set as a pressure transmitter to achieve accurate monitoring of pressure information on the water distribution branch pipe 2.

[0036] In the optional scheme of this embodiment, more preferably, the third control component 33 is set as a diaphragm valve, and the mixing drive component 34 is set as a hydraulic mixing proportioning pump; a diaphragm valve is provided on the pure water branch pipe 31, and a diaphragm valve is provided on both sides of the hydraulic mixing proportioning pump on the mixing branch pipe 32.

[0037] The pure water branch pipe 31 is equipped with a first diaphragm valve 35, and the hydraulic mixing proportioning pump is equipped with a second diaphragm valve 36 and a third diaphragm valve 37 on both sides. When no dosing is required, close the second diaphragm valve 36 and the third diaphragm valve 37, and open the first diaphragm valve 35 to allow clean water to flow through the pure water branch pipe 31. When dosing is required, close the first diaphragm valve 35, and open the second diaphragm valve 36 and the third diaphragm valve 37 to allow clean water to flow through the mixing branch pipe 32. The hydraulic mixing proportioning pump can draw in the nano-preparation concentrate, which is adjustable within the proportion range of 0.1-10%, and mix it with clean water in the mixing branch pipe 32. During the dilution process, the impact of the pressurized water flow ensures that the concentrate is fully mixed, avoiding precipitation or agglomeration of the nano-preparation during injection. This ensures that the diluted nano-preparation has good suspension and dispersibility during injection and is delivered to the injection well for in-situ injection in a constant, uniform, and proportional manner. The addition of nano-preparation during injection is not affected by fluctuations in the injection flow rate and pressure. Regardless of changes in the injection flow rate and pressure, the injected nano-preparation dosage is always in a pre-set proportion to the injection flow rate. The equipment is simple and convenient to operate, reducing energy consumption and emissions while also facilitating the proportional calculation of the nano-preparation dosage and concentration.

[0038] In the optional schemes of this embodiment, more preferably, the intelligent injection equipment for in-situ remediation of contaminated sites with nano-prepared agents provided in this embodiment also includes a monitoring system, which is communicatively connected to the central control system 4. The monitoring system is used to monitor the flow field characteristics and water quality parameters in the remediation site and can transmit them to the central control system 4.

[0039] The monitoring system may include level sensors, pressure transmitters, and water quality sensors installed in in-situ remediation wells such as extraction wells, injection wells, and monitoring wells to monitor the groundwater flow field characteristics and water quality parameters during groundwater extraction and nano-prescription injection. The groundwater flow field characteristics and water quality parameters are transmitted to the central control system 4 through an external signal repeater to assist the intelligent operation of the nano-prescription intelligent injection equipment. Multiple remediation wells can be monitored in real time as needed to achieve simultaneous remediation and improve remediation efficiency.

[0040] The central control system 4 can be configured as a PLC control cabinet. It receives, records, analyzes, and processes the digital and analog signals collected by the first monitoring component 12 and the second monitoring component 22, and sends instructions to the variable frequency injection pump and the corresponding solenoid valve to control the frequency, speed, flow rate, head of the variable frequency injection pump and the opening and closing of the solenoid valve, thereby completing the intelligent control of the nano-preparation intelligent injection equipment. In addition, the control instructions of the central control system 4 can also be transmitted to the extraction pump in the groundwater extraction well to complete the intelligent control of groundwater extraction.

[0041] In the optional solutions of this embodiment, a more preferred option is described in the following description: Figures 3-4 The intelligent injection equipment for in-situ remediation of contaminated sites using nano-prepared agents provided in this embodiment also includes a water storage tank 5 and a nano-prepared agent tank 6; the water storage tank 5 stores clean water and is connected to the inlet of the main pipeline 1; the nano-prepared agent tank 6 stores concentrated nano-prepared agent solution and is connected to the inlet of the mixing drive component 34 through the dosing port 38; the nano-prepared agent tank 6 is equipped with a stirring component 7, which can stir the concentrated nano-prepared agent solution; both the water storage tank 5 and the nano-prepared agent tank 6 are equipped with a liquid level monitoring component 8 that is communicatively connected to the central control system 4.

[0042] The water storage tank 5 is connected to the inlet of the main pipeline 1 to provide clean water. The parameters of the nano-preparation concentrate in the nano-preparation tank 6 are determined according to actual needs. It is connected to the lower dosing port of the hydraulic mixing proportioning pump through a pipeline. The nano-preparation tank 6 is stirred by the stirring component 7 to prevent the nano-preparation from settling or floating during injection and the separation of the nano-preparation from water in the resulting concentrate. The number of nano-preparation tanks 6 can be determined according to the type of nano-preparation and the number of dosing fittings 3.

[0043] Among them, by installing liquid level monitoring devices 8 on both the water storage tank 5 and the nano-preparation tank 6, which are connected to the central control system 4, the corresponding liquid level information can be obtained in a timely manner so as to replenish or otherwise process it in a timely manner; the liquid level monitoring device 8 is set as a liquid level sensor.

[0044] In the optional solutions of this embodiment, a more preferred option is described in the following description: Figures 1-7 All the pipelines described above can be installed within a single container 9 for integrated installation; correspondingly, a clean water inlet, injection outlet, and chemical dosing port 38 can be installed on container 9; additional ventilation or air conditioning equipment can also be installed on container 9 as needed; specifically, such as Figure 1 The pipes shown can be installed on one side wall inside container 9, such as... Figure 2 The pipeline shown can be installed on another inner wall of container 9.

[0045] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A smart injection device for in-situ remediation of contaminated sites using nano-prepared agents, characterized in that: include: Main pipeline (1), the main pipeline (1) is used to supply clean water, and the main pipeline (1) is provided with a first control component (11) for controlling the clean water delivery status on the main pipeline (1) and a first monitoring component (12) for monitoring the pressure information and / or flow information of the clean water delivery on the main pipeline (1). At least one water distribution branch pipe (2) is connected to the main pipeline (1). Each water distribution branch pipe (2) is provided with a second control component (21) for controlling the clean water delivery status on the corresponding water distribution branch pipe (2) and a second monitoring component (22) for monitoring the pressure information and / or flow information when the clean water is delivered on the corresponding water distribution branch pipe (2). At least one dosing pipe (3) is provided, the inlet of which is connected to the outlet of a water distribution branch pipe (2), and the outlet of each dosing pipe (3) is used to discharge clean water or nano-preparation solution; each dosing pipe (3) includes a pure water branch pipe (31) and a mixing branch pipe (32) arranged in parallel, the pure water branch pipe (31) is used to circulate clean water, and the mixing branch pipe (32) is used to circulate and transport the nano-preparation solution after mixing with clean water; both the pure water branch pipe (31) and the mixing branch pipe (32) are provided with a third control component (33) for controlling the on / off state, and the mixing branch pipe (32) is provided with a mixing drive component (34), which can automatically mix the nano-preparation concentrate with clean water according to the ratio under the driving action of internal water flow; The central control system (4) is communicatively connected to the first monitoring component (12) and the second monitoring component (22), and can receive corresponding monitoring information in real time; the central control system (4) is also communicatively connected to the first control component (11), the second control component (21) and the third control component (33), and can control their actions.

2. The intelligent injection equipment for in-situ remediation of contaminated sites using nano-prepared agents according to claim 1, characterized in that: The water distribution branch pipe (2) and the dosing pipe fitting (3) are both configured as multiple, and the multiple water distribution branch pipes (2) are connected in parallel to the main pipeline (1), and the water distribution branch pipes (2) and the dosing pipe fitting (3) are connected in a one-to-one correspondence.

3. The intelligent injection equipment for in-situ remediation of contaminated sites using nano-prepared agents according to claim 1, characterized in that: The main pipeline (1) includes a manifold (13) and at least two branch pipelines (14) connected in parallel. Both branch pipelines (14) are used to supply clean water. Both branch pipelines (14) are connected to the manifold (13). Each water distribution branch pipe (2) is connected to the manifold (13). Each branch pipeline (14) is equipped with the first control component (11) and the first monitoring component (12).

4. The intelligent injection equipment for in-situ remediation of contaminated sites using nano-prepared agents according to claim 3, characterized in that: The first control component (11) includes a first solenoid valve (15) and a variable frequency injection pump (16). The first solenoid valve (15) can control the opening and closing of the corresponding diversion pipeline (14), and the variable frequency injection pump (16) can control the water injection information on the corresponding diversion pipeline (14).

5. The intelligent injection equipment for in-situ remediation of contaminated sites using nano-prepared agents according to claim 3, characterized in that: The first monitoring component (12) includes a first pressure monitoring element (17) and at least one first flow monitoring element (18); the first pressure monitoring element (17) is used to acquire pressure information corresponding to the diversion pipeline (14), and the first flow monitoring element (18) is used to acquire flow information corresponding to the diversion pipeline (14).

6. The intelligent injection equipment for in-situ remediation of contaminated sites using nano-prepared agents according to claim 1, characterized in that: The second control component (21) includes a second solenoid valve (23), which is used to control the opening and closing of the corresponding water distribution branch pipe (2).

7. The intelligent injection equipment for in-situ remediation of contaminated sites using nano-prepared agents according to claim 1, characterized in that: The second monitoring component (22) includes a second pressure monitoring element (24) and at least one second flow monitoring element (25). The second pressure monitoring element (24) is used to acquire pressure information corresponding to the water distribution branch pipe (2), and the second flow monitoring element (25) is used to acquire flow information corresponding to the water distribution branch pipe (2).

8. The intelligent injection equipment for in-situ remediation of contaminated sites using nano-prepared agents according to claim 1, characterized in that: The third control component (33) is configured as a diaphragm valve, and the mixing drive component (34) is configured as a hydraulic mixing proportioning pump; a diaphragm valve is provided on the pure water branch pipe (31), and a diaphragm valve is provided on both sides of the hydraulic mixing proportioning pump on the mixing branch pipe (32).

9. The intelligent injection equipment for in-situ remediation of contaminated sites using nano-prepared agents according to claim 1, characterized in that: It also includes a monitoring system that is communicatively connected to the central control system (4). The monitoring system is used to monitor the flow field characteristics and water quality parameters in the remediation site and can transmit them to the central control system (4).

10. The intelligent injection equipment for in-situ remediation of contaminated sites using nano-prepared agents according to claim 1, characterized in that: It also includes a water storage tank (5) and a nano-preparation tank (6); the water storage tank (5) stores clean water and is connected to the inlet of the main pipeline (1); the nano-preparation tank (6) stores nano-preparation concentrate and is connected to the inlet of the mixing drive component (34); the nano-preparation tank (6) is equipped with a stirring component (7) that can stir the nano-preparation concentrate; both the water storage tank (5) and the nano-preparation tank (6) are equipped with a liquid level monitoring device (8) that is communicatively connected to the central control system (4).

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