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Method for repairing cooper contaminated soil by using three copper resistance flower plants

A technology for phytoremediation and copper pollution, which is applied in the field of phytoremediation to achieve the effect of low technical requirements, improvement of soil degradation and productivity decline, and a small amount of engineering

Inactive Publication Date: 2013-02-20
荆延德
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Problems solved by technology

[0005] At present, the research on flower phytoremediation technology of heavy metal polluted soil is still in its infancy.

Method used

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  • Method for repairing cooper contaminated soil by using three copper resistance flower plants
  • Method for repairing cooper contaminated soil by using three copper resistance flower plants

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Embodiment Construction

[0013] The potting experiment site is located in the experimental greenhouse of Qufu Normal University, Jining City, Shandong Province. There is no pollution source around the experimental site, which is an area not polluted by heavy metals, and belongs to the warm temperate zone monsoon continental climate. The soil used in the experiment was collected from the topsoil (0–20 cm) of the agricultural land (a non-polluted area) west of Qufu Normal University in Jining City, Shandong Province (the geographical position is 116°96′ east longitude, 35°59′ north latitude), and the soil type is brown. Soil, its basic physical and chemical properties are: pH value 7.5, organic matter content 0.99%, total N content 0.0875%, total Cu content 19.73 mg·kg -1 .

[0014] At the beginning of March 2010, flower seedlings were planted, sow the seeds of Peacock Grass and Impatiens in the seedling medium, and keep the soil moist. When the height of the seedlings was about 8cm, containing 5...

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Abstract

The present invention discloses a method for repairing cooper contaminated soil by using three copper resistance flower plants, and belongs to the technical field of contaminated soil plant repair. According to the method, tagetes patula, garden balsam flower and tuberous sword fern rhizome are planted on cooper contaminated soil, a large amount of cooper is absorbed from the cooper contaminated soil through root systems of the three flowers, and is transferred to the overground part, the plants are harvested and then are sold or subjected to resource utilization, and operations of a plurality of the repair period are repeated to remove copper contamination in the soil. The method has the following beneficial effects that: characteristics of simple process and low cost are provided; physical and chemical properties of the soil are not destroyed, and no secondary pollution is generated; and a good copper contaminated soil repair effect is good, the method is applicable for a large area of ??copper contaminated soil, and can concurrently provide effects of environment copper contamination treatment and environment beautification, and the harvested plants can be sold to different places or subjected to a centralized plant material resource utilization so as to obtain a certain economic benefit.

Description

technical field [0001] The invention belongs to the technical field of phytoremediation of polluted soil, and relates to a method for remediating copper-polluted soil by using three kinds of copper-tolerant flower plants. Background technique [0002] Phytoremediation is one of the effective ways to solve the problem of copper-contaminated soil, and the screening of hyperaccumulators or enrichment plants is a prerequisite for the implementation of phytoremediation technology. Although more than 400 species of hyperaccumulator plants have been discovered so far, only 25 species of Cu hyperaccumulator plants have been identified based on field samples collected and identified, and the species are very limited, and these Cu hyperaccumulator plants are mainly distributed in the copper mines of Zaire and Zambia in Africa bring. Therefore, the discovery and screening of new Cu hyperaccumulators or enrichment plants is one of the urgent problems to be solved in the study of Cu-con...

Claims

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Application Information

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IPC IPC(8): B09C1/00
Inventor 荆延德
Owner 荆延德
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