Application of florists cineraria in repairing lead polluted soil

A technology of lead-contaminated soil and polluted soil, which is applied in the field of repairing lead-contaminated soil by Sennipura, can solve problems such as unsatisfactory treatment effects, and achieve the effect of reducing secondary pollution and reducing repair costs

Inactive Publication Date: 2015-04-01
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Application of florists cineraria in repairing lead polluted soil
  • Application of florists cineraria in repairing lead polluted soil

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Experimental program
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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 a thousand day lotus, 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 re...

Embodiment 2

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

[0022] Pot experiments were conducted using the polluted soil collected from the abandoned Shenyang smelter in 2007, and the lead content was 4020mg kg-1(Y). Set the uncontaminated soil as the control (CK). The potted flower is a thousand day lotus, 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 enrichment characteristics of lead in C. japonicus growing on the polluted 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 C. japonicus exceeded the critical content standard of 1000mg kg-1 which is required f...

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Abstract

The invention relates to a plant reparation technique of lead polluted soil, and particularly relates to an application of florists cineraria in repairing lead polluted soil. Florists cineraria is planted on soil containing pollutant lead; the root system of florists cineraria absorbs a large amount of lead in the polluted soil, and the lead is transferred to organs of the overground part; and when the plant grows to the overground part, and biomass is maximal, organs of the overground part of the plant are removed from the polluted soil, thereby achieving the aim of removing pollutant lead in the soil. According to the invention, an abundant plant, namely florists cineraria, is utilized for treating lead polluted soil, and the plant reparation technique has the advantages of low expense, high operability, no harm to the physical and chemical properties of soil, no secondary pollution, good effects of preventing wind erosion and water erosion of the polluted soil and the like.

Description

technical field [0001] The invention relates to the phytoremediation technology of lead-contaminated soil, strictly speaking, it is a method for repairing lead-contaminated soil by using the enrichment plant C. japonicus, that is, the application of C. japonicus in remediating 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...

Claims

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Application Information

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IPC IPC(8): B09C1/00
Inventor 崔爽刘艺芸杨翔华商丽艳
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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