Energy plant ecological interception, purification and restoration system and method for copper-cadmium heavy metal polluted site

Abstract

The invention discloses a copper-cadmium heavy metal polluted site energy plant ecological intercepting, purifying and repairing system which comprises an isolation wall body arranged on the periphery of a polluted site in a surrounding mode, a plurality of liquid passivator filling modules distributed in the polluted site and energy plants planted on the polluted site. The liquid passivator filling module is used for uniformly adding a liquid passivator into the soil of the polluted site, the energy plants are planted in the soil of the polluted site and are cultivated and managed, and after the energy plants grow to the mature period, the overground parts of the energy plants are harvested or the energy plants are integrally removed from the polluted soil. The invention further discloses a working method of the system. Normal ecological and economic functions of the polluted land are brought into full play, high-valued utilization of the heavy metal polluted land is achieved, energy plants are vigorously developed through the heavy metal polluted land, soil heavy metal pollution can be effectively remedied, the way that heavy metal enters a food chain can be cut off, and food safety is guaranteed.

Description

technical field [0001] The invention relates to the technical field of remediation of heavy metal polluted sites, in particular to a system and method for energy plant ecological interception, purification and restoration of copper and cadmium heavy metal contaminated sites. Background technique [0002] In areas where mining is carried out, the main "by-product" of mining is the formation of a large number of tailings ponds, which eventually form wasteland contaminated by heavy metals. These tailings ponds are likely to be the main source of heavy metal pollution in the surrounding farmland soil due to their small scale, large dispersion and low dam height. development has a significant impact. [0003] Since heavy metals cannot be eliminated by biodegradation, soil self-purification is mainly accomplished by slowly releasing them into the environment, and the heavy metals released during this process may cause a certain amount of adverse effects on the surface, groundwate...

AI Technical Summary

Problems solved by technology

Cofferdam damming is a common measure to control heavy metal pollution sources in local areas in the actual operation process.

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