Method for repairing soil polluted by aniline compound by utilizing flax

An aniline compound and a technology of polluted soil, applied in the field of phytoremediation, can solve problems such as in-situ repair of unsuitable polluted soil, damage to soil structure, secondary pollution, etc., achieve outstanding repair effect, improve soil fertility, and slow down wind and water erosion Effect

Inactive Publication Date: 2012-01-25
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At home and abroad, there are many studies on the remediation of aniline-contaminated water bodies, which mainly focus on the screening of highly efficient aniline-degrading bacteria and the research on degradation characteristics, but in the remediation of its polluted soil, the current research has just started
There are physical, chemical, biological and plant methods for the remediation of soil contaminated by aniline compounds. However, the physical and chemical methods are costly, and they are likely to cause secondary pollution during the remediation process, which will destroy the structure of the soil and are not suitable for the original purpose of polluting soil. bit fix

Method used

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  • Method for repairing soil polluted by aniline compound by utilizing flax
  • Method for repairing soil polluted by aniline compound by utilizing flax
  • Method for repairing soil polluted by aniline compound by utilizing flax

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1 A kind of method utilizing flax to remediate aniline compound polluted soil, comprises the following steps:

[0057] (1) Mix 10g of ferrous sulfate into the undisturbed soil polluted by per kilogram of aniline compounds, so that the pH of the undisturbed polluted soil is neutral, and the salinity of the polluted soil after modification is conducive to the germination of seeds.

[0058] (2) After the mixture of soil polluted by aniline compounds and lime soil and urban dewatered sludge is mixed evenly according to the dry weight ratio (kg / kg) of 1: 14.5, mixed soil is obtained; wherein in the mixture, lime soil and The dry weight ratio of municipal dewatered sludge is 13.5:1 (kg / kg). The mixing of the soil improves the fertility of the polluted soil, and at the same time, the lime soil and urban dewatered sludge also bring microorganisms that are beneficial to the degradation of aniline compounds.

[0059] (3) 0.01kg of wheat bran was added per kilogram of ...

Embodiment 2

[0061] Embodiment 2 A kind of method utilizing flax to remediate aniline compound polluted soil, comprises the following steps:

[0062] (1) Mix 10g of ferrous sulfate into the undisturbed soil polluted by per kilogram of aniline compounds, so that the pH of the undisturbed polluted soil is neutral, and the salinity of the polluted soil after modification is conducive to the germination of seeds.

[0063] (2) After the mixture of soil polluted by aniline compounds and lime soil and urban dewatered sludge is mixed evenly according to the dry weight ratio (kg / kg) of 2: 13.5, mixed soil is obtained; wherein in the mixture, lime soil and The dry weight ratio of municipal dewatered sludge is 12.5:1 (kg / kg). The mixing of the soil improves the fertility of the polluted soil, and at the same time, the lime soil and urban dewatered sludge also bring microorganisms that are beneficial to the degradation of aniline compounds.

[0064] (3) Add 0.02kg of wheat bran per kilogram of mixed ...

Embodiment 3

[0066] Embodiment 3 A kind of method utilizing flax to remediate aniline compound polluted soil, comprises the following steps:

[0067] (1) Mix 10g of ferrous sulfate into the undisturbed soil polluted by per kilogram of aniline compounds, so that the pH of the undisturbed polluted soil is neutral, and the salinity of the polluted soil after modification is conducive to the germination of seeds.

[0068] (2) After the mixture of soil polluted by aniline compounds and lime soil and urban dewatered sludge is mixed evenly according to the dry weight ratio (kg / kg) of 3: 12.5, mixed soil is obtained; wherein in the mixture, lime soil and The dry weight ratio of municipal dewatered sludge is 11.5:1 (kg / kg). The mixing of the soil improves the fertility of the polluted soil, and at the same time, the lime soil and urban dewatered sludge also bring microorganisms that are beneficial to the degradation of aniline compounds.

[0069] (3) Add 0.015 kg of wheat bran per kilogram of mixe...

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Abstract

The invention relates to a method for repairing soil polluted by an aniline compound by utilizing flax, which comprises the following steps: (1) blending ferrous sulfate into original soil polluted by the aniline compound per kilogram to enable the pH of the original polluted soil to be neutral; (2) evenly mixing the soil polluted by the aniline compound with the mixture of sierozem and urban dewatered sludge in proportion to obtain mixed soil; (3) adding wheat bran to the mixed soil, and then, cultivating flax on the mixed soil in an open-air method; and (4) carrying out management on the flax in a conventional planting mode, and after the growth period of the flax comes to an end, carrying out mowing on the flax. The method for repairing the soil polluted by the aniline compound by utilizing the flax has low cost, small environment perturbation and no secondary pollution, is capable of increasing soil organic matter and soil fertility, is capable of enabling the polluted soil to be properly repaired after at least one growth period of the plant comes to the end, and is capable of achieving the goal of producing while repairing.

Description

technical field [0001] The invention relates to the phytoremediation technology of organic polluted soil, in particular to a method for using flax to repair soil polluted by aniline compounds. Background technique [0002] Aniline compounds are intermediates in the synthesis of azo dyes, herbicides, insecticides, drugs, explosives, etc., and are degradation products of herbicides and insecticides in agricultural production. Aniline pollutants in the environment mainly come from its production process. Since the production of aniline compounds is generally based on nitroaromatic compounds as raw materials, a large amount of aniline and nitroaromatic compounds will be produced during the production process. Material waste, such as the annual production of 15,000 tons of aniline will discharge 2 million tons of aniline wastewater, and the random discharge of wastewater containing aniline compounds is the main way for it to enter the soil. According to statistics, the annual pr...

Claims

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Application Information

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IPC IPC(8): B09C1/00B09C1/08
Inventor 南忠仁胡亚虎黄璜胡小娜晋王强武文飞
Owner LANZHOU UNIVERSITY
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