Contaminated site risk management and control collaborative remediation system based on functional barrier

Abstract

The invention discloses a contaminated site risk management and control collaborative remediation system based on functional barrier. The remediation system comprises a pollution barrier, a pollutionremediation area and a water treatment system. An annular field groove is formed in the periphery of the contaminated site, and the pollution barrier and the pollution remediation area are arranged inthe annular field groove and separated by a supporting plate; the pollution remediation area is located on the inner side of the annular field groove and comprises a water collection and drainage system, a remediation filler layer, an aeration system and a filter layer. The water collection and drainage system comprises a water collection and drainage groove which is laid at the bottom of the annular field groove along the pollution remediation area; a submersible pump is arranged in the water collection and drainage groove and used for conveying polluted underground water to a water treatment system; the remediation filler layer is arranged above the water collection and drainage groove; the aeration system is arranged on the inner side of the remediation filler layer; the filter layer is positioned on the inner side of the aeration system and is separated from the aeration system by a sieve plate. According to the invention, a functional barrier remediation process is realized, so that the pollution remediation function of a risk management and control technology is improved, and the coordination of risk management and control and pollution remediation is realized.

Description

technical field [0001] The invention relates to the technical field of environmental pollution restoration, in particular to a collaborative restoration system for risk management and control of contaminated sites based on functional barriers. Background technique [0002] In recent years, major environmental pollution incidents caused by soil and groundwater pollution have occurred frequently. Pollution control has become an important part of the current urban double repair and ecological civilization construction. [0003] The main sources of soil and groundwater pollution are leaks, leaks, accidents, and illegal sewage discharges during the long-term production process of chemical industries, smelting, textile printing and dyeing, and electroplating. [0004] According to the types of pollutants, soil and groundwater pollution can be mainly divided into heavy metals and organic pollution. At present, soil and groundwater remediation technologies mainly include solidifica...

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Problems solved by technology

[0007] However, it is difficult to remove pollutants in a short period of time through traditional risk management and control technologies. The natural attenuation period of pollutants is long, which is not conducive to site development and reuse, and secondary pollution risks may also occur during long-term operation and maintenance.

Especially for heavily polluted sites such as chlorinated solvent pollution sources, coking plants, and gas stations, there are problems such as strong pollution volatility, high pollution concentration, and difficult repair. It is not suitable for large-scale excavation or extraction treatment, but such industrial lands are often Located within the scope of urban development, timely relocation is required, and traditional risk control measures cannot meet the construction schedule requirements

[0008] Therefore, how to avoid the high cost and high pollution risk of conventional extraction or in-situ repair technology while ensuring risk control has become an urgent technical problem to be solved by those skilled in the art

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