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Method for oil polluted site restoration through in-situ biostimulation and gas extraction

A technology of oil pollution and bioaugmentation, applied in the field of environmental pollution soil remediation, to achieve good treatment effect, low remediation cost and simple process

Inactive Publication Date: 2018-03-27
江苏创新环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for in-situ bio-enhanced gas extraction and repair of oil-contaminated sites in view of the problems existing in the existing oil-contaminated site remediation technology

Method used

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  • Method for oil polluted site restoration through in-situ biostimulation and gas extraction
  • Method for oil polluted site restoration through in-situ biostimulation and gas extraction
  • Method for oil polluted site restoration through in-situ biostimulation and gas extraction

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Embodiment 1

[0031] The method for in-situ bio-enhanced gas extraction and remediation of oil-contaminated sites described in the present invention is an in-situ remediation method for oil-contaminated sites based on the combination of bio-augmentation and gas extraction, and utilizes microbial degradation and activated carbon physical adsorption to synergistically remove volatilization It has the advantages of strong environmental applicability, low repair cost, good treatment effect, etc., and has broad application prospects.

[0032] The above-mentioned method for remediating oil-contaminated sites by in-situ bio-enhanced gas extraction comprises the following steps:

[0033] (1) Investigate polluted sites: Use high-density electrical resistance method and oil-contaminated sites to conduct on-site surveys to determine the distribution of polluted areas, the degree of pollution, and the potential migration direction of pollutants; use chemical analysis methods to analyze the soil properti...

Embodiment 2

[0038]Using in-situ bio-enhanced gas extraction technology to remediate an oil-contaminated site in Xinjiang. According to on-site investigation and analysis, the polluted site is dominated by sandy soil with strong permeability and a moisture content of 8%. Select 10 sampling points (each sampling point was sampled at 0 m, 1 m and 3 m from the ground) to analyze the pollutant composition and concentration respectively. The results show that the main pollutant of the site is benzene, a volatile organic compound, and the initial concentration of benzene at the sampling point The range was 1.27 ~ 18.59 mg / kg, and the average concentration was 8.71 mg / kg. According to the survey results, a remediation plan for oil-contaminated sites was formulated, and four air injection wells and one extraction well were determined. The air injection wells were in a square layout (with a side length of 8.0 m). The lifting wells are all 1.0 m in diameter and 3.5 m in height; microorganisms with ...

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Abstract

The invention provides a method for oil polluted site restoration through in-situ biostimulation and gas extraction and belongs to the field of environmental polluted soil restoration. The method foroil polluted site restoration through in-situ biostimulation and gas extraction comprises the steps of (1) reconnaissance of a polluted site; (2) making of a restoration scheme; (3) layout of the polluted site; and (4) restoration of the polluted site. According to the method for oil polluted site restoration through in-situ biostimulation and gas extraction, the technique is simple, biostimulation and gas extraction are organically combined, pollutant treatment can be conducted while the oil polluted site is restored, the actual engineering requirement is met, and the operability is high; andthe geological structure of the polluted site is not destroyed, secondary pollution on the polluted site and underground water is avoided, and the method has the advantages that the environment applicability is high, the restoration cost is low and the treating effect is good and has wide application prospects.

Description

Technical field [0001] The invention belongs to the field of environmentally contaminated soil remediation, and specifically relates to a method for in-situ biologically enhanced gas extraction to remediate oil-contaminated sites. Background technique [0002] With the rapid development and continuous growth of social economy, countries around the world have an increasing demand for energy. As one of mankind's main energy sources, the total global production of oil has increased from 3.938 billion tons in 2005 to 4.362 billion tons in 2015. Every year, due to oil mining, transportation, storage, accidental leaks, the discharge of oily wastewater, and sewage irrigation As a result, about 10 million tons of petroleum hydrocarbons pollute the environment. In particular, the most serious soil pollution caused by petrochemical companies in the process of oil extraction, processing and sales. Petroleum-contaminated soil can cause changes in soil structure and properties, vegetati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00B09C1/10
CPCB09C1/00B09C1/10B09C2101/00
Inventor 潘国强
Owner 江苏创新环境工程有限公司
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