Construction method of comprehensive heavy metal polluted soil ecological restoration system

Abstract

The invention discloses a construction method of a comprehensive heavy metal polluted soil ecological restoration system. It is designed that plants serve as adsorption bodies for heavy metal so that the heavy metal can be gradually transferred into plant tissue from soil, and the heavy metal is collected in a manual clipping manner and discharged out of an ecological system. According to the construction method, an optimal growing environment is provided for construction of the ecological system mainly through early-stage soil leveling, and construction of simple canals and ditches and an artificial lake, and diversified ecological system structures are created. Woody plants, shrub plants, herb plants, emergent plants, floating plants and the like are included, and stability of the ecological system is enhanced. By means of distribution positions provided by the construction method, it can be kept that the whole ecological system can independently run, and environment influences outside a to-be-restored region are reduced. By means of the construction method, the content of the heavy metal in a soil environment can be reduced effectively, the construction cost and the schedule maintenance cost can be reduced effectively, additional ecological functions are provided, and improvement of the surrounding environment is facilitated.

Description

Technical field [0001] The invention relates to the construction of a micro-ecological environment and the restoration and treatment technology of heavy metal pollution. It specifically utilizes different types of trees, shrubs, aquatic plants and other plants, and cooperates with certain terrain transformation to realize the method of harmless treatment of heavy metal polluted soil. Background technique [0002] With the development of social economy, especially the new industrial enterprises represented by the chemical industry, the waste of raw materials and environmental pollution will inevitably occur in the process of product manufacturing. Since the density of heavy metals is greater than 4.5g / cm3, they are mainly adsorbed and fixed in the soil, causing serious environmental pollution problems. [0003] Heavy metals are stable in nature and interact with organic structures in soil to form stable complexes, increasing the stability of heavy metals in the environment. ...

AI Technical Summary

Problems solved by technology

[0004] At present, the use of plants to remediate heavy metal-contaminated soil still has the following problems: 1) A single plant is often used for heavy metal adsorption, and the treatment object is single. It requires a large manual management cost under field conditions, and the single vegetation system is poorly adapted to the environment and cannot Embody the true meaning of natural ecological restoration

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