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Application of mesembrianthemum to repairing of lead polluted soil

A technology of lead-contaminated soil and polluted soil, which is applied to the application of pine chrysanthemum in repairing lead-contaminated soil. Using pine chrysanthemum to repair lead-contaminated soil can solve problems such as unsatisfactory treatment effects, reduce secondary pollution, reduce The effect of repair costs

Inactive Publication Date: 2015-03-25
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the governance effect in the prior art is not very ideal

Method used

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  • Application of mesembrianthemum to repairing of lead polluted soil
  • Application of mesembrianthemum to repairing of lead polluted soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1 Pot concentration gradient experiment

[0013] A total of 4 treatments were set up in the experiment, which were the control (CK) and three Pb concentration gradient treatments, and the Pb dosing concentrations were: 1000mg kg -1 (T1), 3000 mg kg -1 (T2), 5000 mg kg -1 (T3), which are respectively 2, 6 and 10 times of the national soil environmental quality level 3 standard, and the added heavy metal form is Pb(NO 3 ) 2 , as an analytically pure reagent, it is added to the soil in a solid state, mixed thoroughly, and set aside for use after one month of equilibration.

[0014] The potted flower is pine chrysanthemum, and after the seedling grows 5-6 leaves, it is transplanted into the above-mentioned treated soil. 3 plants per pot, repeated 3 times. Water according to the soil water shortage situation, so that the soil moisture content is kept at about 70% of the field water capacity. Harvest when the plants are mature.

[0015] The experimental resu...

Embodiment 2

[0021] Example 2 Soil pot experiment in smelting polluted area

[0022] Potted experiment using polluted soil collected from the abandoned Shenyang smelter in 2007, the lead content is 4020mg kg -1 (Y). Set the uncontaminated soil as the control (CK). The potted flower is pine chrysanthemum, and after the seedling grows 5-6 leaves, it is transplanted into the above-mentioned treated soil. 3 plants per pot, repeated 3 times. Harvest when the plants are mature.

[0023] The test results are as follows:

[0024] It can be seen from Table 2 that the Pb enrichment characteristics of the conifers grown on the contaminated soil of the smelter plant are similar to those of the artificially polluted soil. The aboveground biomass decreased slightly, but there was no significant difference with the control (P>0.05), showing strong tolerance. The Pb content in the shoots of Pineapple exceeded the critical content standard of 1000 mg kg for Pb hyperaccumulation plants -1 , in line w...

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Abstract

The invention relates to a plant repairing technology of lead polluted soil and particularly relates to application of mesembrianthemum to repairing of the lead polluted soil. Mesembrianthemum is planted on the soil containing pollutant lead and a lot of the lead in the polluted soil is absorbed by a mesembrianthemum root system and is transferred to organs of an over-ground part; and when the plant grows until the biomass of the over-ground part is maximum, the organs of the over-ground part of the plant are removed from the polluted soil so that the aim of removing the pollutant lead in the soil is realized. According to the application, the lead polluted soil is managed by enriching the plant mesembrianthemum; and the application has the advantages that the cost is low, the operability is high, the physicochemical property of the soil is not damaged, the secondary pollution is not caused, and the effects for preventing soil wind erosion and water erosion are good.

Description

technical field [0001] The invention relates to the phytoremediation technology of lead-contaminated soil, and strictly speaking, it is a method for repairing lead-contaminated soil by using pine chrysanthemum, that is, the application of pine chrysanthemum in repairing lead-contaminated soil. Background technique [0002] Lead is one of the main heavy metal pollutants in the environment. Soil lead pollution is widespread in my country and around the world, especially around mines, smelters and roads, where lead pollution is more serious. Once lead enters the human body, it will interfere with the normal work of nerve cells through the blood, destroy the survival of hemoglobin in the blood and the permeability of brain microvessels, which can lead to retarded and unsound brain development, and ultimately affect people's intelligence. Therefore, lead pollution Soil management and restoration is a very urgent task. Contaminated soil phytoremediation technology is cheap, does ...

Claims

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Application Information

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IPC IPC(8): B09C1/00
Inventor 崔爽刘艺芸王佳华
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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