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A method for remediation of heavy metal pollution in copper mine abandoned soil

A pollution remediation and heavy metal technology, applied in the field of ecological pollution control, can solve the problems of few reports on phytoremediation of copper mines and their abandoned lands, and achieve the effect of strong growth

Inactive Publication Date: 2018-06-08
BAODING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there are few domestic reports on phytoremediation of copper mines and their abandoned lands

Method used

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  • A method for remediation of heavy metal pollution in copper mine abandoned soil
  • A method for remediation of heavy metal pollution in copper mine abandoned soil
  • A method for remediation of heavy metal pollution in copper mine abandoned soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] On the heavy metal-polluted soil in area A, quinoa, green foxtail, sagegrass, and humulus were planted. The four plants were cross-planted. Mixture (the mass concentration of penicillin is 0.25%; the mass concentration of glufosinate-ammonium is 0.02%), when the plant grows to maturity, it is sprayed with heavy metal pollution restoration accelerator thiourea (spraying mass concentration is 1.1%) , Harvested during the senescent period of the plant to achieve the removal of heavy metal pollution and perform harmless treatment.

Embodiment 2

[0085] On the soil polluted by heavy metals in B district, goose down vine and wild watermelon seedlings are planted, and two kinds of plants are planted cross-planted. The mass concentration of fresh element is 0.15%; The mass concentration of glufosinate-ammonium is 0.01%), when the plant grows to mature stage, it sprays heavy metal pollution restoration accelerator thiourea (spraying mass concentration is 0.9%), on the plant Harvest during the aging period to remove heavy metal pollution and perform harmless treatment.

Embodiment 3

[0087] Plant motherwort and chamomile on the heavy metal polluted soil in C district, two kinds of plants are cross-planted, when the plant grows to the growth period, it is sprayed with the mixture of plant growth inhibitor penicillin and glufosinate (cyanocin The mass concentration of glufosinate is 0.3%; the mass concentration of glufosinate-ammonium is 0.025%). When the plant grows to maturity, it is sprayed with heavy metal pollution repair accelerator thiourea (spraying mass concentration is 1.2%). Harvesting, removal of heavy metal pollution, and harmless treatment.

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Abstract

The invention provides a method used for repairing copper mine waste land soil heavy metal pollution through plant plantation. The heavy metal pollutant comprises copper, lead, zinc, chromium, cadmium, arsenic, or composite pollutant. Plants with heavy metal enrichment capacity are planted in polluted soil; at growth period of the plants, plant growth inhibitors are sprayed onto the plants; at plant maturation period, heavy metal pollution repairing promoters are sprayed onto the plants; and at plant aging period, harvesting of the plants is carried out, so that heavy metal pollution elimination is realized. The enrichment capacity of the underground parts of Cirsium setosum, Chloris virgata, and Humulus scandens on copper and arsenic ions is excellent, so that Cirsium setosum, Chloris virgata, and Humulus scandens can be taken as ecological restoration plants of copper and arsenic ions; the enrichment capacity and the transporting capacity of Setaria viridis on lead ions, and the enrichment capacity and the transporting capacity of Hibiscus trionum on zinc ions are excellent; and Chenopodium album, Cynanchum chinense, motherwort, and chamomile possess resistance or tolerance on different heavy metal ions. The method is capable of providing base materials and scientific basis for mine heavy metal pollution treatment.

Description

technical field [0001] The invention provides a method for remediating heavy metal pollution in copper ore abandoned soil, which belongs to the field of ecological pollution control. Background technique [0002] While the mine development has gained huge economic benefits, it has caused serious damage to large areas of vegetation and land, and caused serious heavy metal pollution to the surrounding soil. By the end of 2011, there were at least 985 copper mining areas in the country, and the discharge of copper tailings was 2.3 billion tons. According to the surrounding 33.33hm 2 Conservative estimation for abandoned tailings, there are at least 33,300 hm of abandoned copper mines in China 2 . There are two main causes of heavy metal pollution in the soil of copper mining areas: (1) underground wastewater, mineral processing wastewater, smelter wastewater, etc., contain more heavy metal elements; (2) copper mining wasteland generally contains a large amount of heavy metals...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/10
CPCB09C1/08B09C1/105B09C2101/00
Inventor 魏俊杰张冬梅崔彬彬张妍滕忠才陈萍朱维红管延英郝征王琳徐兆翮
Owner BAODING UNIV
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