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Plant repair method for tailings rich in heavy metals

A phytoremediation and heavy metal technology, which is applied in application, soil preparation methods, agricultural machinery and implements, etc., can solve the problems of long duration of damage, damage to the ecological environment, high content of heavy metals, etc., and achieve the effect of being suitable for large-scale restoration and easy application

Inactive Publication Date: 2018-07-13
安徽金阳光农业服务有限公司
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  • Claims
  • Application Information

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Problems solved by technology

This kind of tailings not only has extremely high heavy metal content, but also lasts for a long time, which brings great damage to the local ecological environment.

Method used

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  • Plant repair method for tailings rich in heavy metals

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Embodiment 1

[0008] Embodiment 1, a kind of phytoremediation method that is rich in heavy metal tailings, comprises the following steps:

[0009] Step 1. Plant the first tolerant plant population according to the density of 15 to 35 plants per square meter. The first tolerant plant population includes any two or more of Sagelan, Dipsacanthus, Kumai, and Nest. More than two species; the four plants in the first tolerant plant group, Suguilan, Dipsacanthus, Kumaicai, and Niaocai, have high transfer coefficients for Cu, Zn, Cd, and Pb and have strong enrichment capabilities. The transfer coefficient refers to the ratio of the heavy metal content in the aboveground part of the plant to the underground part, and is usually used to measure the transport capacity of plants for heavy metals.

[0010] Step 2, planting a second tolerant plant population at a density of 10-20 per square meter, the second tolerant plant population is 3-5 months later than the first tolerant plant population, and the s...

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Abstract

The invention discloses a plant repair method for tailings rich in heavy metals. The method comprises the following steps: step 1, planting a first resistant plant planting group according to the density of 15-35 plants per square meter, wherein the first resistant plant planting group comprises any two or more than two of kinds of plants including SuHuaiLan, Sonchus asper, Artemisia apiacea and Vicia hirsute; step 2, planting a second resistant plant planting group according to the density of 10-20 plants per square meter, wherein the second resistant plant planting group comprises any two ormore than two of kinds of plants including Imperata Cylindrica, Digitaria sanguinalis, Plantago asiatica and Erigeron annuus; step 3, planting an auxiliary matched planting group according to the density of 1-3 plants per square meter, wherein the auxiliary matched planting group comprises any two or more than two of kinds of plants including camphor trees, tea trees and ginkgo trees; step 4, regularly applying a phosphatic fertilizer and an insecticide. According to the plant repair method disclosed by the invention, the environment of the tailings ground can be easily and silently repairedthrough the plant planting method and the method has the characteristics of simple and convenient application, economy, practicability and suitability for large-area repair.

Description

technical field [0001] The invention relates to the field of tailings restoration, in particular to a phytoremediation method for tailings rich in heavy metals. Background technique [0002] In recent years, with the development of the economy and society, the demand for resources of the whole society has increased day by day, which has led to a substantial increase in the amount of mining. Many mines have been mined very quickly and are about to be decommissioned or have already been decommissioned. When all kinds of mines provide a large amount of heavy metals before decommissioning, they also leave solid waste-tailings that are harmful to local residents, animals and plants after decommissioning. This kind of tailings not only has extremely high heavy metal content, but also lasts for a long time, which brings great damage to the local ecological environment. Contents of the invention [0003] The purpose of the present invention is to solve the deficiencies of the pri...

Claims

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Application Information

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IPC IPC(8): A01B79/02
CPCA01B79/02
Inventor 陆必红
Owner 安徽金阳光农业服务有限公司
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