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Harmless remediation method of organic polluted soil

A technology for organic pollution and restoration methods, applied in the restoration of polluted soils, etc., can solve the problems of difficult to achieve control effects, complex soil treatment processes, secondary pollution, etc. simple effect

Inactive Publication Date: 2018-11-02
HEBEI YUHUAN ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The pollution status of polluted soil is relatively complicated, involving heavy metal pollution, organic matter pollution, heavy metal and organic matter polluted soil, irritating odor soil, etc. The soil treatment process is complicated, and it is difficult to achieve the ideal treatment effect. Well, it is easy to cause secondary pollution

Method used

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  • Harmless remediation method of organic polluted soil

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Embodiment Construction

[0028] The soil of a certain chemical plant has been polluted, and now it wants to change it to a commercial land, which urgently needs to be repaired. The organic pollutants concerned in this chemical plant land are polycyclic aromatic hydrocarbons (phenanthrene, benzo(a)anthracene, benzo(b)fluoranthene, Benzo(a)pyrene, indeno(1,2,3-cd)pyrene, dibenzo(a,h)anthracene), petroleum hydrocarbons (C6-C16, C17-C36), xylene, in organically polluted sites Excavate the foundation pit, transport the excavated organic contaminated soil to a closed greenhouse, and take 1 ton of soil samples from the contaminated area for mixed treatment. The specific treatment steps are as follows:

[0029] (1) 1 ton of soil samples from the polluted farmland area is screened and pretreated by a sieving machine to remove coarse impurities with a particle size of ≥50mm, and large-sized construction waste with a particle size of ≥50mm is piled up in the construction waste cleaning area for rinsing , after p...

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Abstract

The invention relates to a harmless remediation method of organic polluted soil. The method comprises the steps of (1) excavating a foundation pit in an organic polluted field; carrying the excavatedorganic polluted soil into a closed greenhouse; adding an oxidant and a catalyst to the organic polluted soil, and fully stirring and uniformly mixing; and accumulating for 24-28h to obtain oxidized and reduced organic polluted soil; (2) thermally treating the oxidized and reduced organic polluted soil for 30-50min under the temperature of 150-200 DEG C to obtain thermally-treated organic pollutedsoil; (3) adding an organic substance to the thermally-treated organic polluted soil, and uniformly mixing to obtain planting soil; and (4) backfilling the planting soil to the foundation pit excavated in a field area, and planting common seepweed herb by a common method. The remediation method is simple; the remediation effect is good; and soil subjected to various pollutions can be remediated.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a harmless restoration method for organic polluted soil. Background technique [0002] Contaminated soil remediation refers to the use of physical, chemical, biological and ecological principles, and the use of artificial control measures to reduce the concentration (activity) of soil pollutants, realize the harmlessness and stabilization of pollutants, and achieve the desired detoxification effect. technical measures. At present, theoretically feasible restoration technologies include phytoremediation, microbial restoration, chemical restoration, physical restoration and comprehensive restoration. Some restoration techniques have entered the stage of field application and achieved good results. Remediation of contaminated soil is of great significance in blocking pollutants from entering the food chain, preventing harm to human health, and promoting land resou...

Claims

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Application Information

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IPC IPC(8): B09C1/08B09C1/06
CPCB09C1/065B09C1/08
Inventor 赵彩云张美灵魏鹏鹏周蕾张军胡大海张家宁
Owner HEBEI YUHUAN ENVIRONMENTAL PROTECTION TECH CO LTD
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