Method for improving heavy metal contaminated soil

A technology for polluted soil and heavy metals, applied in the restoration of polluted soil and other directions, can solve the problem of inability to absorb heavy metals, and achieve the effect of obvious effect and extensive use value.

Inactive Publication Date: 2015-11-04
SHENZHEN JINYUAN ENVIRONMENTAL INVESTMENT HLDG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it cannot absorb other heavy metals such as cesium

Method used

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Examples

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Embodiment 1

[0018] Embodiment 1, this embodiment is a method to improve the soil polluted by heavy metals on the land by planting pennisetum. This method can have obvious effects on the soil polluted by heavy metals, especially cesium and cadmium.

[0019] In this example, the soil contaminated by heavy metals is improved by planting pennisetum, which mainly includes the following steps:

[0020] Ridging, on the leveled land, the ridge spacing is 40 to 60 cm, and the ridge height is 5 to 15 cm; the generally used ridge spacing is 40 cm, and the ridge height is 10 cm.

[0021] To plant Pennisetum, plant mature Pennisetum stem nodes as stems, place the stems flat on the ridge or insert the buds upwards obliquely on the ridge, the distance between plants is 50-60cm, and the soil is 6-10cm.

[0022] Plant potato seedlings and sunflower seedlings between the ridges.

[0023] Harvesting and harmless treatment, harvest once every 30 to 50 days, and conduct harmless treatment on the harvested pe...

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PUM

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Abstract

Provided is a method for improving soil polluted by heavy metals. The method comprises: ridging: ridging on a leveled ground, the ridge distance ranging from 40 cm to 60 cm and the ridge height ranging from 5 cm to 15 cm; planting pennisetum alopecuroides: using eustipes of mature pennisetum alopecuroides as seed stems and planting the eustipes, flatwise placing the seed stems on the ridges or slantingwise inserting the seed stems in the ridges with buds of the seed stems facing upwards, setting the planting distance to range from 50 cm to 60 cm, and covering the seed stems with earth with a thickness of 6 cm to 10 cm; and harvest and harmless treatment: harvesting the pennisetum alopecuroides every 30 to 50 days, and performing harmless treatment on the harvested pennisetum alopecuroides. Soil polluted by heavy metals is improved by using pennisetum alopecuroides, the effect is obvious, and the harvested pennisetum alopecuroides has many and wide use values.

Description

technical field [0001] The invention relates to a method for improving soil polluted by heavy metals, in particular to a method for improving soil by absorbing heavy metals in soil by planting plants. Background technique [0002] At present, heavy metal pollution in the soil around landfill sites, waste incineration sites, and thermal power plants is particularly serious. Some waste landfill sites, around waste incineration sites, and around thermal power plants have made the soil uncultivable due to heavy metal pollution. In order to ensure that these heavy metal-polluted soils are improved before recultivation, great efforts have been made by all parties. , has also made great achievements, but it is not a long way to go to improve the soil polluted by heavy metals so that it can reach the state of recultivation. [0003] At present, the best tool to improve heavy metal-polluted soil is to plant some special plants, absorb the heavy metals in the soil through the plants ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00B09C1/10
CPCB09C1/00
Inventor 马玉娇潭继明曾庆平高咏曾宝玲
Owner SHENZHEN JINYUAN ENVIRONMENTAL INVESTMENT HLDG CO LTD
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