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Treatment method for heavy-metal-contaminated soil

A technology of polluted soil and treatment methods, applied in the restoration of polluted soil, etc., can solve problems such as deterioration of soil environmental quality, and achieve the effect of low cost and no damage to the soil ecological environment

Inactive Publication Date: 2018-11-27
通化县金汇生态农业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, heavy metal pollution has also led to the deterioration of soil environmental quality, seriously endangering the virtuous cycle of the agricultural ecosystem and the living environment of human beings, and the treatment of heavy metal pollution in soil is imminent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for processing heavy metal-contaminated soil, comprising the steps of:

[0022] 1) Get heavy metal-contaminated soil containing magnetotactic bacteria; and rinse; plant centipede grass in the heavy metal-contaminated soil after the rinse, and cultivate for 5-6 months; then pull out the young ears of centipede grass, and carry out centipede grass remove;

[0023] 2) mixing the removed centipede grass and soda salt to obtain a mixture; applying the mixture to the heavy metal-polluted soil where centipede grass has been planted, and cultivating for 5-6 months; then pulling out the young ears of centipede grass, and Remove centipede grass;

[0024] 3) The above step 2) is repeated cyclically until the content of heavy metals in the soil reaches the safety standard.

[0025] After 5-6 months of treatment, the heavy metal concentration of the soil was tested. The test results showed that the concentration of sodium ions in the soil solution of the plow layer decrea...

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PUM

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Abstract

The invention discloses a treatment method for heavy-metal-contaminated soil. The method includes the following steps that 1, heavy-metal-contaminated soil containing magnetotactic bacteria is taken and subjected to drip washing, pteris vittata is planted in the washed heavy-metal-contaminated soil and cultured for 5-6 months, then young ears of the pteris vittata are removed, and the pteris vittata is moved away; 2, the moved pteris vittata is mixed with soda salt to obtain a mixture, the mixture is applied to the heavy-metal-contaminated soil where the pteris vittata has been planted, culture is carried out for 5-6 months, then young ears of the pteris vittata are removed, and the pteris vittata is moved away; 3, the step 2 is repeated until the content of heavy metals in the soil reaches the safety standard. The treatment method is safe, effective, low in cost and environmentally friendly, does not damage the ecological environment of the soil, and does not need secondary treatment.

Description

technical field [0001] The invention relates to the technical field of remediation of contaminated soil, in particular to a method for processing heavy metal-contaminated soil. Background technique [0002] In recent decades, due to the rapid development of my country's industry and rapid economic growth, a series of environmental problems have been brought about. Among them, heavy metal pollution in soil is an important aspect. Heavy metal pollution in soil is mainly caused by mining, smelting, chemical industry, electroplating, etc. The heavy metal-containing waste produced by industries such as electronics, tanning, etc. enters the soil, as well as the unreasonable application of sewage irrigation, pesticides, fertilizers, garbage, fly ash and urban sludge. The protection of the soil environment has long been concerned by people. . [0003] At present, heavy metal pollution has also led to the deterioration of soil environmental quality, seriously endangering the virtuous ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/10B09C1/08
CPCB09C1/105B09C1/08B09C2101/00
Inventor 龙弘扬龙宏志龙德敏孔庆军
Owner 通化县金汇生态农业发展有限公司