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Bioremediation method of iron ore tailing

A technology for bioremediation and iron ore tailings, which is applied in the restoration of polluted soil, etc., can solve the problems of difficult implementation, complicated procedures, and low vegetation restoration rate, and achieves improved tailings properties, high tolerance, The effect of low operating costs

Inactive Publication Date: 2013-03-20
溧阳市天目湖保健品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2. Physical treatment: use tailings as the growth substrate of crops and scientifically improve it, add some soil to mix with tailings to form a suitable growth substrate, supplemented by scientific irrigation technology and ripening technology, the effect of this method is It’s okay, but the procedure is complicated, uneconomical, and difficult to implement
4. Vegetation restoration: Mainly carry out soil improvement and plant trees, shrubs, grasses and other plants for forestry experiments. The treatment process takes a long time. After treatment, only secondary communities dominated by vegetation can be formed, with a single species , the vegetation recovery rate is not too high
At present, there are not many planting techniques for horsetail, and the medicinal materials of horsetail on the market basically come from wild horsetail

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Carry out the tailings restoration of the present invention in the iron ore tailings pond in Shilu, Hainan, carry out according to the following steps:

[0021] (1) Surface treatment of tailings: In early April, the surface layer of tailings was plowed at a depth of 20 cm. After measuring its acidity, pH = 2. Therefore, when plowing, the amount of borax was applied to the tailings at a rate of 3 kg per square meter. Mine surface, and mix borax and tailings evenly by plowing, then place the plowed tailings for 2 days, and then level the tailings surface;

[0022] (2) Planting horsetail: After the surface treatment of the tailings is completed, transplant the horsetail seedlings to the treated tailings. When transplanting, dig small pits at a distance of 10 cm × 10 cm on the leveled tailings. The diameter and depth of the small pit are 3 cm as the standard. After the horsetail seedlings are inserted into the small pit, the tailings are backfilled and gently compacted. Aft...

Embodiment 2

[0028] Carry out the tailings restoration of the present invention in the iron ore tailings pond in Shilu, Hainan, carry out according to the following steps:

[0029] (1) Surface treatment of tailings: In early April, the surface layer of the tailings was plowed at a depth of 20 cm. After measuring its acidity, pH=3, so the amount of borax applied to the tailings was 2 kg per square meter when plowing. Mine surface, and mix borax and tailings evenly by plowing, then place the plowed tailings for 3 days, and then level the tailings surface;

[0030] (2) Planting horsetail: After the surface treatment of the tailings is completed, transplant the horsetail seedlings to the treated tailings. When transplanting, dig small pits at a distance of 10 cm × 10 cm on the leveled tailings. The diameter and depth of the small pit are 3 cm as the standard. After the horsetail seedlings are inserted into the small pit, the tailings are backfilled and gently compacted. After transplanting, us...

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Abstract

The present invention provides a bioremediation method of iron ore tailings. The method uses the high tolerance of horsetail to heavy metals and the transformation ability for the tailings to realize the purpose of repairing the tailings by planting the horsetail on the tailings. In addition, the horsetail is a medicinal plant having an economic value, and also can create certain economic benefits.

Description

technical field [0001] The invention relates to a tailings repair technology, in particular to a repair technology for iron ore tailings. Background technique [0002] After mining, the tailings pond has produced many ecological and environmental problems and a large number of social and economic problems, which have become an important obstacle restricting the sustainable development of the local social economy. Vegetation restoration is quite difficult. At present, there are mainly the following methods for ecological restoration technical measures for tailings ponds: 1. Covering soil: For any type of mine tailings ponds, the easiest way is to cover soil, but the required The cost is relatively high, so it can only be used in areas with relatively good economic conditions and strong awareness of ecological environmental protection. 2. Physical treatment: use tailings as the growth substrate of crops and scientifically improve it, add some soil to mix with tailings to form...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00
Inventor 彭江晨
Owner 溧阳市天目湖保健品有限公司