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A method to improve the efficiency of phytoremediation of copper-contaminated soil

A technology for phytoremediation, copper pollution

Active Publication Date: 2015-11-18
JIANGSU SUNTIME ENVIRONMENTAL REMEDIATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a method for improving the efficiency of phytoremediation of copper-contaminated soil, which solves the problems of short plant, small biomass and slow growth caused by the inhibition of the growth of A. And other issues

Method used

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  • A method to improve the efficiency of phytoremediation of copper-contaminated soil
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  • A method to improve the efficiency of phytoremediation of copper-contaminated soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The selected species of Haizhou Lemongrass is Haizhou Lemongrass which has a history of more than 3,000 years at the ancient copper mine site in Daye, Hubei. The soil used for the test is the soil of a certain mining area in Hubei. Weighing 1.5 kg, chemicals were applied to the soil according to the following scheme.

[0039] Chemical enhancers:

[0040] ① Blank control (control);

[0041] ②Sulfur powder: Add 3.87g (80mmol / kg) of industrial sulfur powder to the soil, and stir evenly as the test soil;

[0042] ③Ethylenediamine disuccinic acid: Add 1.34g (3mmol / kg) of industrial ethylenediamine disuccinic acid to the soil, and stir it evenly as the test soil;

[0043] ④Sulfur powder + ethylenediamine disuccinic acid: Add 3.87g (80mmol / kg) of industrial sulfur powder and 1.34g (3mmol / kg) of industrial ethylenediamine disuccinic acid to the soil, and stir well as the test soil .

[0044] After raising the seedlings of A. haizhouensis, the seedlings with the same growth ...

Embodiment 2

[0050] The selected species of Haizhou Lemongrass is Haizhou Lemongrass which has a history of more than 3,000 years at the ancient copper mine site in Daye, Hubei. The soil used for the test is the soil of a certain mining area in Hubei. Weighs 1.5kg.

[0051] After raising the seedlings of A. haizhouensis, the seedlings with the same growth were selected and transplanted into the test soil, one plant per pot. Move the potted plants to the greenhouse, irradiate with natural light, and water the plant seedlings regularly to prevent the seedlings from drying out. According to the following scheme, 20ml of nutrient solution was applied to the leaves of A. haizhou every 3 days after planting, harvested after 30 days, and the biomass and copper content of the underground and aerial parts of the plants were measured.

[0052] Nutrient solution:

[0053] ②Blank control (control): distilled water;

[0054] ② Nutrient solution 1: 1000ml of nutrient solution contains 56mg of NH 4 N...

Embodiment 3

[0061] The selected species of Haizhou Lemongrass is Haizhou Lemongrass which has a history of more than 3,000 years at the ancient copper mine site in Daye, Hubei. The soil used for the test is the soil of a certain mining area in Hubei. Weighing 1.5 kg, chemicals were applied to the soil according to the following scheme.

[0062] Chemical enhancers:

[0063] ① Blank control (control);

[0064] ②Sulfur powder: Add 3.87g (80mmol / kg) of industrial sulfur powder to the soil, and stir evenly as the test soil;

[0065] ③Ethylenediamine disuccinic acid: Add 1.34g (3mmol / kg) of industrial ethylenediamine disuccinic acid to the soil, and stir it evenly as the test soil;

[0066] ④Sulfur powder + ethylenediamine disuccinic acid: Add 3.87g (80mmol / kg) of industrial sulfur powder and 1.34g (3mmol / kg) of industrial ethylenediamine disuccinic acid to the soil, and stir well as the test soil .

[0067] After raising the seedlings of A. haizhouensis, the seedlings with the same growth ...

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Abstract

The invention belongs to the field of phytoremediation of heavy metal polluted soil, and discloses a method for improving phytoremediation efficiency of copper-polluted soil on the basis of the existing phytoremediation method for the heavy metal polluted soil. The method comprises the following steps: applying a chemical enhancer containing powdered sulfur and ethylenediaminedisuccinic acid to the copper-polluted soil; spraying a nutrient solution containing exogenous plant hormone naming zeatin Z at a fixed period after planting elsholtzia splendens; picking the aboveground parts of elsholtzia splendens after the growing season is finished, so as to reach the purpose of remediating the heavy-metal copper polluted soil. With the adoption of the method, the growth of elsholtzia splendens is promoted, and the problems that high-copper soil represented by soil in a copper mine area inhibits the growth of elsholtzia splendens and causes short plant, small biomass and slow growth can be solved; the method has the advantages of being high in absorbing efficiency, high in degree of enrichment, and obvious in remediation effect.

Description

technical field [0001] The invention belongs to the field of phytoremediation of soil polluted by heavy metals, and in particular relates to a method for planting Azalea haizhou in soil polluted by heavy metal copper, and applying a chemical enhancer and a nutrient solution containing exogenous plant hormones to improve phytoremediation efficiency. Background technique [0002] Since the reform and opening up, with the intensification of urbanization and industrialization, soil heavy metal pollution has become one of the environmental problems that people pay close attention to. Surveys have shown that since 2005, heavy metal pollution incidents have occurred frequently in our country. In the past 50 years, the global emission of heavy metal copper into the environment was about 9.39×10 5 Ton. At present, the world emits an average of 3.4 million tons of copper per year, which mainly comes from various industries (mining, smelting, metal processing, machinery manufacturing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/00B09C1/08A01C21/00
Inventor 李玲唐晓声周芬
Owner JIANGSU SUNTIME ENVIRONMENTAL REMEDIATION
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