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Method for repairing soil polluted by vanadium and chromium by means of Eleusine indica(L.)Gaertn.

A technology for polluted soil and beef tendon grass is applied in the field of remediation of polluted soil, which can solve problems such as polluted soil and pollution, achieve the effect of obvious enrichment effect and reduce the risk of groundwater pollution

Inactive Publication Date: 2016-06-22
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Although V and Cr are used in many industries, the environmental pollution caused by waste residue, waste water and waste gas during the process of refining V and Cr cannot be underestimated.
However, at present, there is little attention to vanadium-chromium-contaminated soil at home and abroad.

Method used

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0024] The method for utilizing goosegrass to restore vanadium-chromium-contaminated soil provided by the invention comprises the following operations:

[0025] The seeds of goosegrass [Eleusine indica (L.) Gaertn.] are sown in the soil polluted by vanadium and chromium, and the vanadium and chromium in the soil can be enriched during the growth process. removed from the . Vanadium and chromium in the soil will also be removed;

[0026] Continuously plant multiple crops of goosegrass in the soil to gradually remove vanadium and chromium that exceed the standard in the soil.

[0027] The goosegrass seeds, foreign soil and fertilizer are fully mixed, and then sowed by spraying; the spraying amount of seeds is 6-15 kg per mu; the amount of foreign soil is 2-5 kg ​​of the amount of seeds. time...

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Abstract

The invention discloses a method for repairing vanadium-chromium-contaminated soil by using goosegrass, comprising the following operations: sowing the seeds of goosegrass [Eleusine indica (L.) Gaertn.] in soil polluted by vanadium and chromium, During its growth, it can enrich the vanadium and chromium in the soil, and remove it from the soil as a whole after the growth is mature. Vanadium and chromium in the soil will also be removed. Continuously plant multiple crops of goosegrass in the soil to gradually remove vanadium and chromium that exceed the standard in the soil. Goosegrass uses its extremely developed root system to not only absorb V and Cr in the soil to its roots, and then transfer the heavy metals from the roots to the aboveground parts of the plant through growth, but also effectively reduce the downward migration of heavy metals Risk of groundwater contamination.

Description

technical field [0001] The invention belongs to the technical field of remediation of polluted soil, and relates to a method and application for remediating vanadium-chromium polluted soil by using goosegrass. Background technique [0002] Both vanadium (V) and chromium (Cr) are transition elements. V is mainly associated in minerals such as vanadium-potassium-uranite, sulfur-vanadium-copper ore, and vanadium-lead ore; Cr is mainly distributed in primary parent rocks. The total amount of metal vanadium resources in the world is about 41.3 million tons, of which my country's vanadium resource reserves rank third in the world. V is widely used in steel, non-ferrous metals, ceramics, pigments, electronic technology and other industries. Cr is mainly used in metallurgy, electroplating, paint, automobile and other fields. [0003] Although V and Cr are used in many industries, the environmental pollution caused by waste residue, waste water and waste gas during the process of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00
CPCB09C1/105
Inventor 蒋建国丁旭彤李天然
Owner TSINGHUA UNIV
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