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Heavy petroleum-contaminated soil remediation bed

A technology for oil pollution and soil remediation, applied in the field of polluted soil treatment

Inactive Publication Date: 2018-05-18
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in order to solve the problem of remediation of heavily oil-contaminated soil, provide a remediation bed for heavily oil-contaminated soil with simple operation and low investment

Method used

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  • Heavy petroleum-contaminated soil remediation bed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A heavily oil-contaminated soil remediation bed consists of an anti-seepage layer 1, a protective layer 2, a straw aeration layer 3 and a target soil layer 4 from bottom to top.

[0036] The anti-seepage layer 1 is laid with an anti-seepage film, and the anti-seepage film adopts a plastic film with a thickness of 1.5 mm.

[0037] The protective layer 2 is laid with fine sand.

[0038] The straw ventilation layer 3 is laid with corn stalks with a thickness of 50 mm. There are ventilation pipes in the corn stalks. The ventilation pipes are provided with several air outlets. The ventilation pipes are made of hard plastic pipes, and the ventilation pipes communicate with the blower.

[0039] The target soil layer 4 is filled with a mixture of heavily oil-contaminated soil and a soil conditioner. The thickness of the target soil layer is 500 mm. The soil conditioner is prepared by mixing human and livestock manure and crop straw charcoal at a volume ratio of 1:1.

[0040]...

Embodiment 2

[0059] A heavily oil-contaminated soil remediation bed consists of an anti-seepage layer 1, a protective layer 2, a straw aeration layer 3 and a target soil layer 4 from bottom to top.

[0060] The anti-seepage layer 1 is laid with an anti-seepage film, and the anti-seepage film adopts a plastic film with a thickness of 2 mm.

[0061] The protective layer 2 is laid with fine sand.

[0062] The straw ventilation layer 3 is paved with 80 mm thick rice straw, and the rice straw is provided with a ventilation duct, and a plurality of air outlets are arranged on the ventilation duct, and the ventilation duct is made of a hard plastic pipe, and the ventilation duct is connected with a blower.

[0063] The target soil layer 4 is filled with a mixture of heavily oil-contaminated soil and a soil conditioner. The thickness of the target soil layer is 300 mm. The soil conditioner is prepared by mixing human and livestock manure and crop straw charcoal at a volume ratio of 1:1.

[0064...

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Abstract

The invention relates to a heavy petroleum-contaminated soil remediation bed. An impermeable layer, a protection layer, a straw ventilation layer and a target soil layer are sequentially arranged fromthe bottom of the remediation bed to the top. An impermeable thin film is paved on the impermeable layer, and a plastic film with the thickness ranging from 1.5 mm to 2 mm is adopted as the impermeable thin film. Fine sand is paved on the protection layer. Crop straw with the thickness ranging from 50 mm to 100 mm is paved on the straw ventilation layer, a ventilation pipeline is arranged in thecrop straw, multiple air outlets are formed in the ventilation pipeline, and the ventilation pipeline is made of a hard plastic pipe and communicates with an air blower. The target soil layer is filled with a mixer of high-concentration petroleum-contaminated soil and a soil conditioner. The thickness of the target soil layer ranges from 100 mm to 800 mm. The soil conditioner is formed by mixing human and animal excreta and crop straw carbon according to the volume ratio being 1:1.

Description

technical field [0001] The invention relates to the technical field of contaminated soil treatment, in particular to a remediation bed for heavily oil-contaminated soil. Background technique [0002] In our country, about 600,000 tons of oil enter the environment through various channels every year, resulting in about 5 million hm 2 The land has been polluted by oil, causing incalculable losses. Soil oil pollution has the characteristics of concealment and latent, irreversible and long-term, and serious consequences. In soils polluted by high concentrations of petroleum, petroleum hydrocarbons with a higher concentration have a toxic effect on the petroleum-degrading microorganisms in the soil, and even kill the degrading microorganisms in the soil, thereby greatly reducing the efficiency of soil petroleum degradation; secondly, it will make the soil physical and chemical The nature changes, the soil is barren, the vegetation is simplified, and the nutrients such as carbon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00B09C1/08B09C1/02B02C21/00
Inventor 万玉山韩惠沈梦温馨
Owner CHANGZHOU UNIV