Technical route of modular restoration system 1. Investigation/risk assessment of contaminated sites;2. Modeling software for site in-situ restoration plans to complete site in-situ restoration plans;3. Standardized production of modular restoration devices, and on-site installation and debugging of the restoration system;4. Achieve economic and efficient restoration process through intelligent control and wireless transmission systems. Several commonly used system restoration technologies, groundwater extraction + wastewater treatment (P&T), a certain number of pumping wells are set up in contaminated sites, and contaminated groundwater is pumped to the ground through pumps and wells for treatment. After the treatment reaches the standard, it is recharged underground or transported out of the site. The Soil Vapor Extraction + Waste Gas Treatment System (SVE) uses air injection or artificial driving force for extraction to inject fresh air into the contaminated area through an injection well. A vacuum pump is used to generate negative pressure. When the air flows through the contaminated area, volatile organic pollutants in the soil pores are resolved and entrained in the air flow, and flow back to the ground through the extraction well. The Multi-Phase Extraction + Wastewater/Waste Gas Treatment System (MPE) uses a high negative pressure vacuum pump to mix the gas-liquid mobile phase from the extraction pipe in the extraction well. The extracted gas-liquid mixed fluid is then gas-liquid separated at the surface and collected and processed through the wastewater/waste gas treatment system. Soil Vapor Extraction [SVE] + Air Sparging [AS] This technology includes two steps: air injection and gas extraction. Air injection injects air into a saturated aquifer. When the air and pollutants come into contact, it accelerates the volatilization of pollutants into the gaseous phase. The gaseous pollutants rise to the vadose zone with the air, and are then extracted through the soil gas extraction mechanism. Key technologies 1. Standardization of in-situ repair modular devices: Standardization of "equipment production, installation and operation" is the prerequisite for large-scale production of the project to ensure the consistency of the size and interface installation methods of each modular device components, which is convenient for large-scale production and convenient for on-site combined use. 2. Site in-situ restoration plan modeling software: Its core is based on the company's technical team's rich successful experience in the fields of site investigation and risk assessment, supplemented by optimized computer model algorithms to improve the accuracy of the restoration plan, that is, to a certain extent Standardize restoration plans (Excluding the phenomenon that varies from person to person in plan formulation);3. Intelligent control and transmission system: The application of this key technology enables the in-situ restoration of the site to operate continuously for 24 hours on the basis of minimum manual workload, accelerating the progress of contaminated site restoration, thereby achieving the scale of engineering services. Application scope of gas phase extraction module: polluting soil 1. Integrated modular device is easy to transport, install and use, and can be used in combination with other repair equipment modules;2. Regenerative blower, positive displacement blower and variable frequency drive are used together to facilitate adjustment of speed control to obtain higher vacuum and flow rate;3. Centrifugal pump/progressive cavity pump equipped with visual liquid level line of sight tube;4. Automated PLC control system;5. Independent filter container and medium; 6. Have data recording function and remote access system. Application scope of multiphase extraction module: Contaminating soil/groundwater 1. Integrated modular device is easy to transport, install and use, and can be used in combination with other restoration equipment modules;2. Equipped with rotating claw blower and liquid ring pump to achieve higher vacuum and flow rate;3. Equipped with stainless steel oil-water separator and storage tank;4. Equipped with air stripper and double-sided bag filter;5. Automated PLC control system;6. With data recording function and remote access system. Application scope of the in-situ drug injection module: Contaminating soil/groundwater 1. Integrated modular device is easy to transport, install and use, and can be used in combination with other restoration equipment modules;2. Equipped with independent dual piston pumps and high-performance gasoline engines;3. Stainless steel and nitrided steel components have strong corrosion resistance;4. Easy to clean, the piston pump can be completely disassembled, cleaned and reassembled in 5 minutes. Application scope of wastewater and waste gas treatment module: Pollution of groundwater/wastewater/waste gas 1. Integrated modular device is easy to transport, install and use, and can be used in combination with other repair equipment modules;2. Equipped with stainless steel oil-water separator and storage tank, and equipped with anti-corrosion anodes in the oil-water separator;3. An editable, automated PLC control system. 1. Integrated modular device is easy to transport, install and use, and can be used in combination with other repair equipment modules;2. Efficient catalytic oxidation;3. Stainless steel and aluminum structure;4. Equipped with steam control valves and control panels. Work progress The modular repair system has been initially completed and applied to actual projects, and project cooperation has taken place with Shanghai Municipal Engineering Design and Research Institute (Group) Co., Ltd., Huaci Testing and Certification Group Co., Ltd. and other companies. The project applies [multiphase extraction + in-situ drug injection + wastewater and waste gas treatment system] A restoration site in Yangpu District, Shanghai has a volume of 1321 m3, groundwater 2123 m3, and restoration targets chlorobenzene, nitrobenzene, m-xylene/para-xylene, etc.[multiphase extraction + in-situ drug injection + groundwater extraction device + wastewater and waste gas treatment system] A restoration site in Jinshan, Shanghai has a volume of 5542 m3, groundwater 19236 m3. Features and innovations of integrated remediation systems for remediation target substances such as phenol, 2-methylnaphthalene, and PAHs are modular and standardized. Intelligent control and transmission systems are adopted to achieve remote monitoring. 1. The repair equipment (gas phase extraction/multiphase extraction, in-situ drug injection, wastewater, waste gas treatment, etc.) is modular and standardized;2. An intelligent control and transmission system is adopted to achieve remote monitoring.