In-situ rainwater leaching repair system for contaminated soil

Abstract

The invention relates to an in-situ rain leaching repair system for contaminated soil. The in-situ rain leaching repair system at least comprises three parts, namely a rain collection part, a leaching repair part and a waste water treatment part, wherein the rain collection part is provided with water guiding pipes, a water collecting tank and canals, the leaching repair part is provided with an observation well, water collecting pipes and plants planted for the soil phytoremediation, the observation well is built in a middle-upper layer of contaminated soil, and the water collecting pipes are in the middle-lower layer; and the waste water treatment part is provided with a filter tank, a microorganism putting tank, an electric separation tank, a wind power generating set and the like, leaching waste water is firstly filtered by the filter tank, and is then repaired by the microorganism putting tank, and finally, the leaching waste water passes through the electric separation tank to process heavy metal so as to obtain the purified liquid. The in-situ rain leaching repair system establishes a complete contaminated soil simulated repairing system for the soil in an aeration zone, and combines repair technologies of leaching, plants, microorganisms, electric separation and the like. The in-situ rain leaching repair system has the characteristics of energy conservation, emission reduction and no secondary pollution, and is suitable for repairing the soil in a large-area aeration zone with little pollution.

Description

technical field [0001] The invention relates to an in-situ rainwater leaching and repairing system for polluted soil which integrates repairing technologies such as washing and filtering, plants, microorganisms and electric separation. Background technique [0002] As chemical pollutants enter the soil system through multiple channels, such as large-scale application of chemical fertilizers and pesticides, industrial waste water continuously invades farmland and accidental discharge of toxic and harmful pollutants; solid waste, especially toxic and hazardous solid waste landfills cause toxic Substance leakage causes serious soil pollution; meanwhile, it causes secondary pollution to groundwater and surface water; pollutants can enter the human body through drinking water or through the soil-plant system and through the food chain, directly endangering human health. Therefore, remediation of polluted soil and groundwater, protection of human health, and sustainable economic a...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of serious soil and groundwater pollution in the above-mentioned prior art, and provide a kind of energy saving and emission reduction, no secondary pollution, easy to operate, low cost, suitable for soil pollution restoration in the less polluted vadose zone The in-situ rainwater leaching and remediation system for contaminated soil established a relatively complete simulated remediation model for contaminated soil for the remediation of soil in the aerated zone

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