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Method for repairing lead-polychlorinated biphenyl combined pollution soil through halophytes kochia scoparia (L.) Schrad.

A polychlorinated biphenyl and compound pollution technology, applied in the field of phytoremediation, achieves low technical requirements, strong adaptability, and the effect of improving soil degradation and productivity decline

Inactive Publication Date: 2016-04-06
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, Kochia and its improved varieties are mostly used for landscaping and greening, and the market potential is huge, but so far there has been no report on the use of Kochia to remediate soil contaminated by heavy metals and persistent organic pollutants

Method used

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  • Method for repairing lead-polychlorinated biphenyl combined pollution soil through halophytes kochia scoparia (L.) Schrad.
  • Method for repairing lead-polychlorinated biphenyl combined pollution soil through halophytes kochia scoparia (L.) Schrad.
  • Method for repairing lead-polychlorinated biphenyl combined pollution soil through halophytes kochia scoparia (L.) Schrad.

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Embodiment 1

[0018] Example 1: Kochia remediation lead-polychlorinated biphenyl compound polluted soil experiment

[0019] The experimental site is in the greenhouse of Nankai University TEDA College, and the pollution sources around the experimental site. The experimental soil is the top soil (0-20cm) of the forest park in Tanggu District, Tianjin, and the soil type is coastal saline soil. In this experiment, 16 treatment groups were set up, each treatment was repeated 3 times, and the concentration of Pb-PCBs was 0-0 (CK), 0-50 (T1), 0-100 (T2), 0-500 (T3) , 500-0(T4), 500-50(T5), 500-100(T6), 500-500(T7), 1000-0(T8), 1000-50(T9), 1000-100(T10), 1000-100(T11), 2000-0(T12), 2000-50(T13), 2000-100(T14), 2000-500(T15), concentration of pollutants added in each treatment group ρPb-ρPCBs, Pb concentration unit mgkg -1 , PCBs concentration unit is μg kg -1 , where Pb is analytically pure Pb (NO 3 ) 2 , PCBs were added in the form of standard PCB18 and PCB28 with a concentration ratio of ...

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Abstract

The invention relates to the polluted-environment phytoremediation technology, in particular to a method for repairing Pb-polychlorinated biphenyl combined pollution soil through halophytes kochia scoparia (L.) Schrad. According to the method, a large amount of Pb in the polluted soil is absorbed and collected through root systems of the halophytes kochia scoparia (L.) Schrad. and transported to the ground portions, polychlorinated biphenyl in the soil can be further degraded through the root systems and microorganisms of the halophytes, and the whole-plant halophytes are harvested after the halophytes grow for 90 days and duly handled, so that the large amount of Pb is collected from soil, and the polychlorinated biphenyl in the soil is degraded; as the halophytes are repeatedly planted and the process is repeated, the excess Pb and the excess polychlorinated biphenyl in the soil can be continuously removed till the content of the Pb and the content of the polychlorinated biphenyl in the soil meet the environmental safety standard. The method has the advantages that investment is small, the work amount is small, the physicochemical properties of the soil are not damaged, secondary pollution is avoided, and the environment can be beautified while the polluted soil is treated.

Description

technical field [0001] The invention relates to a phytoremediation technology for polluted environment, in particular to a method for remediating lead-polychlorinated biphenyl composite polluted soil by using halophyte Kochia scoparia. Background technique [0002] With the acceleration of urbanization and the rapid development of industry and agriculture, especially the vigorous development of mining, smelting, electroplating and tanning industries, the unreasonable use of heavy metal-containing pesticides and fertilizers has caused increasingly serious heavy metal pollution in the soil environment [Document 1 : SatarugS, BakerJR, UrbenjapolS, et al. Aglobal perspective on cadmium pollution and toxicity in non-occupationally exposedpopulation [J]. With the development of electronic technology and the acceleration of the replacement of electronic products, the amount of electronic waste continues to increase, and the heavy metals released into the environment during the dism...

Claims

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Application Information

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IPC IPC(8): B09C1/10
CPCB09C1/105
Inventor 刘维涛张雪陈晨周启星
Owner NANKAI UNIV
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