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China is a big country of industrial development, every year due to the needs of urban construction and development, a large number of chemical enterprises need to relocate, resulting in a large number of chemical enterprises due to relocation of the remaining sites, these sites are often subject to

China is a big country of industrial development, every year due to the needs of urban construction and development, a large number of chemical enterprises need to relocate, resulting in a large number of chemical enterprises due to relocation of the remaining sites, these sites are often subject to various pollution in the industrial production process, with a certain degree of pollution, harmfulness. now it is necessary to take effective measures to repair and truly give play to the value of chemical heritage. today we talk about the application of soil thermal desorption technology in chemical contaminated sites.

soil thermal desorption technology is a technology that china attaches more importance to promotion, and is more suitable for sensitive sites of projects. thermal desorption technology uses physical methods to heat the soil, so that pollutants are separated from the soil into the water and gas phases, and then the separation of soil from wastewater and waste gas is realized by means of separation devices, and then the repair of thermal desorption technology is achieved. combined with the current case effect analysis of the application of thermal desorption technology, the thermal desorption technology can quickly, efficiently and stably remove pollutants without adding agents, and effectively avoid secondary soil pollution.

the application of soil thermal desorption remediation technology can meet the requirements of various indicators, but it is also inevitable that secondary pollution problems will occur, and reducing secondary pollution is an important part of green sustainable remediation of chemical polluted sites. by establishing a whole-process secondary pollution prevention and control system of source one pathway and one receptor, and using effective technology and soil remediation equipment to prevent and control pollution, secondary pollution can be effectively avoided.

at present, compared with developed countries, the soil remediation model of chemical polluted sites in china is still in its infancy, and it is necessary to strengthen research on relevant links such as investigation, risk assessment and remediation technology of polluted sites. soil thermal desorption technology has obvious advantages, stable treatment effect and short remediation time, secondary pollution can be controlled, public acceptance is high, and the final cost is also within the acceptable range, which can achieve the green sustainable remediation effect of maximizing net benefits.