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Method for repairing copper pollution by utilizing chelating agent EDTA reinforced reed

A technology of copper pollution and chelating agent, which is applied in the field of using chelating agent EDTA to strengthen reeds to repair copper pollution, can solve the problems of low absorption efficiency, low phytoremediation efficiency, poor plant tolerance, etc., achieve concentration reduction, and is conducive to large-scale promotion Application, overcoming the effect of low absorption efficiency

Inactive Publication Date: 2020-02-21
LIAONING UNIVERSITY
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AI Technical Summary

Problems solved by technology

At present, the use of reeds to remediate copper pollution has the bottleneck of poor plant tolerance and low absorption efficiency.
Phytoremediation is inefficient due to the impact of heavy metal bioavailability in media

Method used

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  • Method for repairing copper pollution by utilizing chelating agent EDTA reinforced reed

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Embodiment 1

[0022] (1) a kind of method utilizing chelating agent EDTA to strengthen reed to repair copper pollution, method is as follows:

[0023] 1) Select fresh reed seedlings, put them in water and cultivate them for 15 days, then screen out reeds with consistent growth, 6 plants as a group, plant them in a 3000ml beaker filled with 2500ml improved Hoagland nutrient solution, and place the beakers randomly Put them in a greenhouse with the same suitable conditions for further cultivation, replace the nutrient solution every two days and place them randomly again to reduce the error caused by the difference in the environment. Continue to cultivate for 7 days, and use it for hydroponic experiment after the plant grows stably;

[0024] 2) Plant reed seedlings in copper-polluted water bodies with a copper concentration of 5-10mg / L, add EDTA 2-8mmol / L, and grow and cultivate for 21 days;

[0025] 3) Remove the grown and cultivated reeds from the polluted water body, plant the same numbe...

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Abstract

The invention discloses a method for repairing copper pollution by utilizing chelating agent EDTA reinforced reed. The method comprises the following steps: 1) planting reeds in a copper polluted water body, adding chelating agent EDTA, and performing growth culture; and 2) removing the reed subjected to growth culture from the polluted water body, repeatedly planting, and repeating the operationuntil the content of copper in the water body is reduced to meet the requirements of the national water quality standard. According to the method, EDTA is applied to reinforce reed to repair copper pollution; the method can overcome the bottleneck of poor plant tolerance and low absorption efficiency which are common in the past, not only can purify water and obviously reduce the concentration ofheavy metal copper in the water environment, but also can recycle heavy metal enriched in the plant body, has good economic and social benefits, and is beneficial to large-scale popularization and application.

Description

technical field [0001] The invention relates to the field of copper-polluted water restoration, in particular to a method for strengthening reeds to restore copper pollution by utilizing a chelating agent EDTA. Background technique [0002] At present, with the acceleration of industrialization, the discharge of heavy metal wastewater is huge, and heavy metal pollution is becoming more and more serious. Water heavy metal pollution has become one of the main environmental problems today. Heavy metals in water mainly come from key polluting industries such as electroplating, mining and metallurgy, electronics manufacturing, and thermal power generation. Heavy metal pollutants have high stability and cannot be degraded in the water body. When they accumulate in the water body to a certain limit, they will cause serious harm to the water body-aquatic plant-aquatic animal system, and may directly or indirectly through the food chain affect human health. Therefore, heavy metal p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/10B09C1/00
CPCB09C1/002B09C1/105B09C2101/00
Inventor 吴洁婷胡佳宁姜磊应育芹张岩陆味味
Owner LIAONING UNIVERSITY
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