In-polluted-site heat-intensifying vapor extracting and repairing integrated device and application method

Abstract

The invention provides an in-polluted-site heat-intensifying vapor extracting and repairing integrated device and an application method. The integrated device comprises a high pressure fan, a gas-liquid separation tank, an active carbon absorption tower, an automatic control cabinet, a heating electrode, a flow meter, a vacuum gage, a temperature sensor, a humidometer and an organic pollution gas detector; an extracting pipeline is connected with an extracting well, and the heating electrode is embedded in a polluted area. The specific application method comprises the steps as follows: starting the heating electrode to raise the temperature of the soil in the site and promote the desorption of the pollutant in the soil, then starting the high pressure fan, forming a negative pressure in the pipeline to generate flowing of gas from the extracting well to the outside, taking away the pollutant in the soil from the soil along with the flowing of the gas, and enabling the active carbon absorption tower to absorb the gas pollutant to fulfill the purpose of repairing the polluted site. The in-polluted-site heat-intensifying vapor extracting and repairing integrated device and the application method are used for repairing the soil in the organic polluted site, so that not only the pollutant removal rate is improved, but also the influence of the low temperature condition on the vapor extracting technique is further reduced, the effective repairing working time in winter is prolonged, and the purpose of efficiently treating the polluted site is fulfilled.

Description

technical field [0001] The invention relates to a contaminated site restoration equipment and an application method, belonging to the field of environmental protection. Background technique [0002] As the basis of industrial and agricultural production and an important part of environmental elements, soil is a natural resource on which human beings depend. It absorbs about 90% of pollutants in the environment. With the advancement of suburbanization and anti-urbanization, a large number of urban enterprises have relocated. In 2008, the number of enterprises shut down and transferred in my country reached 22,488. Phenomena such as leakage and leakage” and various environmental accidents will cause various volatile pollutants to enter the soil of the site (Liao Xiaoyong et al. Urban Industrial Polluted Sites: A New Topic in the Field of China’s Contaminated Environmental Restoration. Environmental Science, 2011), forming a large number of Contaminated sites are in urgent need ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem of the present invention is to overcome the shortcomings of conventional gas-phase extraction technology, and provide a mobile, fast, economical and effective heat treatment-enhanced gas-phase extraction repair equipment that can be used in organic-contaminated sites, and can be used in organic-contaminated sites Efficient remediation not only improves the removal efficiency of pollutants, but also eliminates the limitation of soil temperature on gas phase extraction technology, prolongs the effective remediation working time in winter, and achieves the purpose of efficient remediation

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