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Remediation method of decabromodiphenyl oxide contaminated soil

A technology of decabromodiphenyl ether and a restoration method is applied in the field of restoration of decabromodiphenyl ether-contaminated soil, can solve problems such as disappearance, decreased activity of fungi, inability to realize soil pollution restoration, etc., and achieves good effect, simple operation, low cost effect

Inactive Publication Date: 2010-06-16
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] There are many microorganisms in the soil, which makes it difficult to use fungi for soil pollution remediation. Some microorganisms in the soil will cause the activity of fungi to decrease or disappear, making it impossible to remediate soil pollution.
[0008] At present, there are no relevant reports on the direct use of polypore bacteria in the remediation of decabromodiphenyl ether-contaminated soil and the study of various parameters in the remediation

Method used

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  • Remediation method of decabromodiphenyl oxide contaminated soil
  • Remediation method of decabromodiphenyl oxide contaminated soil
  • Remediation method of decabromodiphenyl oxide contaminated soil

Examples

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Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 Research on Porous Bacteria Remediation of Decabromodiphenyl Ether Contaminated Soil and the Amount of Bacteria

[0023] The red soil in the Arboretum of South China Agricultural University in Guangzhou was collected. After the soil was sampled, it was air-dried in the laboratory and passed through a 60-mesh sieve for later use.

[0024] Mix decabromodiphenyl ether with the above-mentioned treated soil samples evenly at room temperature, put them in a dark place, and prepare decabromodiphenyl ether-contaminated red soil with a decabromodiphenyl ether content of 2.5 mg / kg.

[0025] This embodiment sets four experimental groups:

[0026] Blank control group: take no bacterial species added to the decabromodiphenyl ether-contaminated red soil as the blank control group;

[0027] Bacteria addition group 1: add polypore bacteria flakes to decabromodiphenyl ether-contaminated red soil and mix evenly, the ratio of bacteria addition is 3 flakes / 10g soil;

[0028] Ba...

Embodiment 2

[0040] The condition optimization of the soil to be tested in embodiment 2

[0041] The present embodiment is mainly optimized for the treatment method of the soil to be tested. The soil sample adopts the decabromodiphenyl ether-contaminated red soil of 2.5 mg / kg prepared in Example 1, and is divided into two experimental groups:

[0042] (1) Non-sterilized group: this group does not adopt sterilization treatment to the decabromodiphenyl ether-contaminated red soil of 2.5mg / kg prepared in Example 1, directly according to the dosage ratio of 6 pieces / 10g soil, the polypore Add to decabromodiphenyl ether contaminated red soil and mix evenly;

[0043] (2) Sterilization group: This group first carries out conventional sterilization treatment to the decabromodiphenyl ether-contaminated red soil of 2.5mg / kg prepared in Example 1, and then according to the addition ratio of 6 pieces / 10g soil, the porous Bacteria were added to the sterilized decabromodiphenyl ether-contaminated red s...

Embodiment 3

[0050] The restoration effect detection of embodiment 3 different soil samples

[0051] In this example, 5 kinds of soil samples were collected, namely red soil, red soil, brick red soil, paddy soil and vegetable field soil. Among them, the red soil came from Huanong Arboretum, the paddy soil and vegetable garden soil came from Huanong Village, and the red soil came from Zhanjiang. Red Soil Lai comes from Shaoguan.

[0052] After the soil sampling was returned, it was placed in the laboratory in a natural style, and passed through a 60-mesh sieve for later use. The 2.5 mg / kg decabromodiphenyl ether-contaminated red soils of the above five kinds of soils were prepared respectively, and the preparation method was the same as in Example 1.

[0053] 10g of soil was used for each treatment, and 3 replicates were set up, and the amount of polypore bacteria added was 6 pieces / 10g of soil.

[0054] Before the test, the initial concentration of decabromodiphenyl ether in the test soi...

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Abstract

The invention discloses a remediation method of decabromodiphenyl oxide contaminated soil, which comprises the following steps: pore fungus is made into fungus pieces by using a puncher with the diameter of 10 mm, the pore fungus pieces and the decabromodiphenyl oxide contaminated soil are uniformly mixed at room temperature, and the degradation action of the pore fungus on the decabromodiphenyl oxide is utilized to realize the remediation of the decabromodiphenyl oxide contaminated soil. The remediation method of the invention has the advantages of low cost and simple operation, and has favorable effect on degrading decabromodiphenyl oxide in the soil. Some parameters in the remediation method are optimized, so that the pore fungus can be directly added to the soil to be remediated and can not be affected by complex ingredients in the soil, thereby effectively degrading the decabromodiphenyl oxide in the soil.

Description

technical field [0001] The invention relates to the technical field of soil pollution bioremediation, in particular to a method for remediating decabromodiphenyl ether-contaminated soil. Background technique [0002] Decabromodiphenyl ether (BDE-209 or DeBDE) is the most demanded polybrominated diphenyl ether in the market. It is one of the common industrial products used in flame retardants, and is widely used in rubber, textile, electronics, plastics and other industries. . After decabromodiphenyl ether is discharged into the environment, it will be converted into polybrominated dibenzodioxins, polybrominated dibenzofurans and low-brominated biphenyls through photolysis, pyrolysis, biological and microbial degradation and other processes Ethers, which enter the organism more easily, also cause stronger toxic effects. Decabromodiphenyl ether itself has also been tested to have potential carcinogenicity and affect the immune function of offspring. [0003] The remediation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/10
Inventor 赵月春莫测辉刘露
Owner SOUTH CHINA AGRI UNIV
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