This project belongs to the field of energy and environmental technology. my country's groundwater environmental pollution forms are severe. The problem of groundwater organic pollution in industrial sites is prominent. It is easy to form secondary pollution sources and spread around, destroying groundwater resources, polluting drinking water sources, hindering the development and reuse of land in contaminated areas, endangering the ecological environment and residents 'health, affecting social stability. Supported by the 863 Plan, the public welfare plan of the Ministry of Environmental Protection and the National Natural Science Foundation of China, this project proposes the groundwater environment based on the environmental behavior, traceability relationship and degradation reaction characteristics of organic pollutants in groundwater, combined with the hydrogeological characteristics of soil aquifers. New technologies for pollution remediation and risk identification and control have achieved good practical application results. The main innovation results are as follows:

1. Invented the integrated degradation technology and equipment of groundwater organic pollution extraction and stripping, advanced oxidation and tail gas catalytic combustion. The extraction process uses environmentally friendly biosurfactants to promote the directional migration of organic matter; designed a multifunctional countercurrent blowing and stripping oxidation combination tower, which solves the problem of integrated treatment of volatile, semi-volatile and non-volatile organic compounds compound pollution of groundwater; invented a tail gas catalytic combustion device to efficiently degrade and recover heat, realizing the coupled recycling of heat and waste.
2. Invented the degradation reaction column matrix-type discontinuous infiltration reaction wall technology, which overcomes the shortcomings of traditional reaction grids with large area and poor mobility; constructed a new coupling material of anaerobic bacteria, nano zero-valent iron and activated carbon fiber to efficiently degrade organic compound pollution; invented the technology of joint remediation of organic pollution in groundwater with plant microorganisms, which solves the problem of complete mineralization and detoxification of organic pollution under the condition of low dissolved oxygen concentration in the groundwater environment.
3. Invented the non-disturbance sampling and determination technology for groundwater volatile organic compound pollution, which solved the problem of inaccuracy of measurement results caused by the escape of organic compounds; proposed technical guidelines for monitoring and risk assessment of groundwater volatile organic compound pollution, and solved the problem of formulating restoration target values. problem; A simulation device for the migration and transformation of groundwater volatile organic compound pollution clusters was invented, a mathematical model for the migration and transformation corrected by biological natural attenuation factors was proposed, and the future change trend of organic pollutants in actual sites was successfully predicted.
   This technical invention has applied for 21 patents, 11 authorized invention patents, 1 software copyright, and 3 utility models; 2 technical guidelines for the environmental protection industry have been formed; 18 papers have been published, 16 SCI papers have been published, and 213 citations have been cited. 6 domestic and foreign academic conference reports. According to the scientific and technological achievements of the Ministry of Education's Science and Technology Novelty Retrieval Workstation and the Shanghai City Chemical and Chemical Engineering Society, the overall technology is innovative, is the first in China, and has reached the international advanced level. China Academy of Environmental Sciences, Nanjing Institute of Environmental Sciences of the Ministry of Environmental Protection and South China Institute of Environmental Sciences of the Ministry of Environmental Protection respectively evaluated and determined that the overall technological innovation of this project is obvious, breaking foreign monopoly, and some indicators are at the international leading level. The invention has been successfully applied to investigation, risk assessment and restoration projects of organic matter pollution groundwater in 16 industrial sites in 7 provinces and cities across the country. It has treated and protected 85300 cubic meters of groundwater resources. The cumulative contract amount of the project exceeds 190 million yuan, saving 55.05 million yuan in costs. The restoration of contaminated groundwater involves a land area of 58500 square meters. It is expected that considerable economic benefits will be generated after secondary development of all land. It reduces the harm of toxic and harmful organic compounds to the urban ecological environment and residents 'health, and creates significant energy conservation, environmental protection, and economic and social benefits.
   This innovative technology system and application results have promoted the development of groundwater pollution prevention and control disciplines in my country, promoted the industry progress of groundwater organic pollution control, and accelerated the National Key Laboratory for Environmental Risk Assessment and Control of Chemical Processes for Environmental Protection, and the National Environmental Protection Urban Pollution Site Restoration Engineering Center (to be established). One person in the research team was selected as an outstanding talent in the new century of the Ministry of Education, one person was selected as a youth basic research program of the Ministry of Education, and one person was selected as a young science and technology star in Shanghai City, cultivating 45 graduate students.