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Treatment method for improving repair effect on cadmium-contaminated soil

A technology for cadmium-contaminated soil and soil, which is applied in the field of improving the remediation effect of cadmium-contaminated soil, can solve the problems of small migration of heavy metals, difficulty in remediation and treatment of cadmium-contaminated soil, and secondary pollution, so as to improve the remediation effect and increase the growth rate. , the effect of strong resistance

Active Publication Date: 2014-10-01
HANGZHOU BLUE SKY LANDSCAPE CONSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the disadvantages of the prior art that it is difficult to remediate and treat cadmium-contaminated soil, the migration of heavy metals is small, and it is easy to cause secondary pollution, etc., and provides a treatment method for improving the remediation effect of cadmium-contaminated soil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A treatment method for improving the remediation effect of cadmium-contaminated soil, comprising the steps of:

[0025] (1) In winter, apply the restoration agent to the soil to be repaired according to the application rate of 0.02kg / square meter;

[0026] (2) In spring, apply base fertilizer, and plant sisal seedlings according to 6 strains / square meter, sisal seedlings plant height 20~30cm;

[0027] (3) within 3 days after the sisal seedlings are planted, in the gaps between the sisal seedlings, according to 30 strains / square meter, reed bamboo is planted, and reed bamboo is the high reed bamboo seedling of 30~50cm;

[0028] (4) According to the soil water and fertilizer status, water and supplement fertilizer to keep the soil water content at 60-80%;

[0029] (5) Excavate the sisal in autumn, and cut off the aerial parts of Arundis;

[0030] (6) In winter, apply the restorative agent on the original plot again at an application rate of 0.02kg / square meter, plant si...

Embodiment 2

[0034] A treatment method for improving the remediation effect of cadmium-contaminated soil, comprising the steps of:

[0035] (1) In winter, apply the restoration agent to the soil to be repaired according to the application rate of 3kg / square meter;

[0036] (2) In spring, apply base fertilizer, and plant sisal seedlings according to 10 strains / square meter, sisal seedlings plant height 20~30cm;

[0037] (3) within 7 days after the sisal seedlings are planted, in the gaps between the sisal seedlings, according to 10 strains / square meter, plant reed bamboo, the long reed bamboo tuber of reed bamboo 15~30cm;

[0038] (4) According to the soil water and fertilizer status, water and supplement fertilizer to keep the soil water content at 60-80%;

[0039] (5) Excavate the sisal in autumn, and cut off the aerial parts of Arundis;

[0040] (6) In winter, apply the restorative agent on the original plot again at an application rate of 3kg / square meter, plant sisal hemp at 2 plants...

Embodiment 3

[0044] A treatment method for improving the remediation effect of cadmium-contaminated soil, comprising the steps of:

[0045] (1) In winter, apply the restoration agent to the soil to be repaired according to the application rate of 1kg / square meter;

[0046] (2) In spring, apply base fertilizer, and plant sisal seedlings according to 8 strains / square meter, sisal seedlings plant height 20~30cm;

[0047] (3) within 10 days after the planting of the sisal seedlings, in the gaps between the sisal seedlings, according to 5 strains / square meter, plant Arundos reeds, the long Arundos reeds stem buds of 15~30cm;

[0048] (4) According to the soil water and fertilizer status, water and supplement fertilizer to keep the soil water content at 60-80%;

[0049] (5) Excavate the sisal in autumn, and cut off the aerial parts of Arundis;

[0050] (6) In winter, apply the restorative agent on the original plot again at an application rate of 2kg / square meter, plant sisal hemp at the rate ...

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Abstract

The invention relates to the field of environmental technology utilization and discloses a treatment method for improving the repair effect on cadmium-contaminated soil. According to the method, the combined effect of a chemical repair agent, sisal and bamboo reeds is adopted; after the repair agent is applied to the to-be-repaired cadmium-contaminated soil, the sisal and the bamboo reeds are interplanted; heavy metal cadmium is absorbed and accumulated by utilizing the flocculation effect of the chemical repair agent and the enrichment effect of the sisal and the bamboo reeds; and after outplanting in autumn every year, ashing processing is performed, so as to extract the heavy metal cadmium and achieve the purpose of repairing the soil. According to the treatment method, the combined effect of the chemical repair agent, the sisal and the bamboo reeds is adopted, because the biomass of the sisal and the bamboo reeds is large, the patience and the transfer volume to cadmium in the soil environment are large, the bamboo reeds are perennial plants and can be simply planted and managed, and processing is separated from food chains, the repair effect on the cadmium-contaminated soil and the safety of a subsequent process are greatly improved, secondary pollution is avoided, and the cadmium-contaminated soil can be preferably repaired.

Description

technical field [0001] The invention relates to the field of environmental technology, in particular to a treatment method for improving the remediation effect of cadmium-contaminated soil. Background technique [0002] With the rapid development of the economy, the pollutants discharged into the environment through human activities have increased sharply. Heavy metal cadmium pollutants also enter the soil through mining and smelting, three waste discharges, sewage irrigation, garbage dumps, etc., causing serious soil heavy metal pollution. Among them, in the recycling process of e-waste, due to processes such as incineration and pickling, a certain degree of heavy metal cadmium pollution has been produced on the surrounding farmland soil. Therefore, the treatment of soil polluted by heavy metal cadmium has become one of the focuses in the field of soil environmental science and technology at home and abroad. [0003] Although there have been many reports on the remediatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00
Inventor 刘海琳王振宇陈利庄洁琰张世新
Owner HANGZHOU BLUE SKY LANDSCAPE CONSTR GROUP
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