In-situ remediation method for petroleum-contaminated soil

An in-situ remediation and contaminated soil technology, applied in the field of soil remediation, can solve the problems of failure to effectively solve the problem of oil-contaminated soil remediation, difficulty in achieving the ideal remediation effect, and unstable ozone, etc. Repair cycle, small impact effect

Pending Publication Date: 2020-11-13
BEIJING FENGZELVYUAN ENVIRONMENT TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has a good remediation effect on petroleum hydrocarbon-contaminated soil, but there are problems of ozone instability and low utilization rate in the remediation process
[0007] To sum up, the existing methods have failed to effectively

Method used

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  • In-situ remediation method for petroleum-contaminated soil

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Embodiment

[0030] Taking the soil polluted by a petrochemical company in my country as an example of remediation of petroleum-contaminated soil, the implementation process of the in-situ remediation method for petroleum-contaminated soil provided by the present invention will be described in detail. The soil samples were taken before treatment and the total amount of petroleum hydrocarbons was determined by gas chromatography, the results are shown in Table 1 below.

[0031] First, site selection and land leveling. Select 1200m 2 The polluted site is used as a remediation unit, the depth of digging is 2.2m, and the treated soil volume is about 2640m 3 . Level the land according to the terrain conditions. After the land is leveled, slope protection will be built around the restoration site, with a vertical height of 0.5m and a sidewalk width of 0.4m at the top of the slope protection.

[0032] Next, solid microorganisms and nutrients are added. Add 1000kg of solid microorganisms to t...

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Abstract

The invention provides an in-situ remediation method for petroleum-contaminated soil. The in-situ remediation method comprises a step of applying microorganisms to soil and a step of conducting plantcultivation and maintenance on the soil. Preferably, the microorganisms are composite microorganisms containing dominant bacteria including pseudomonas, planoeoccus, alcanivorax, mycobacteria, carnobacterium, paracoccus, kurthia, luteimonas and sphingobium; and the cultivated plants are preferably reeds and alfalfa. According to the in-situ remediation method provided by the invention, the petroleum-contaminated soil is subjected to in-situ remediation treatment through a biological enhancement-plant purification combined process; and according to the method, petroleum pollutants in the soil can be rapidly and effectively reduced or even removed, remediation cost is low, secondary pollution is avoided, operation is safe, and the method is suitable for in-situ remediation of soil contaminated by petroleum and/or polycyclic aromatic hydrocarbons.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, in particular to an in-situ remediation method for petroleum-contaminated soil. Background technique [0002] Petroleum is one of the most important energy sources for human beings. With the development of society and economy, people's demand for petroleum products is increasing day by day. At the same time, a large amount of petroleum and its processed products are Into the soil, causing soil dysfunction and soil quality decline, and ultimately affect human health through the food chain. [0003] The remediation methods of oil-contaminated soil can be divided into three categories: physical, chemical and biological methods. [0004] Physical remediation methods use physical principles and specific engineering techniques to remove or transform pollutants in the soil into harmless forms, mainly including: soil replacement, gas phase extraction, extraction elution, thermal desorption and ...

Claims

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Application Information

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IPC IPC(8): B09C1/00B09C1/10
CPCB09C1/10B09C1/105B09C2101/00
Inventor 陈键叶正芳赵泉林梁雷军李增雄张庆洋王中友孙蕾任婧瑶
Owner BEIJING FENGZELVYUAN ENVIRONMENT TECH
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