In-situ remediation method for petroleum-contaminated soil

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 ...

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 solve the problem of remediation of petroleum-contaminated soil in oil sites, especially for soils contaminated with high concentrations of petroleum hydrocarbons. The traditional single method is difficult to achieve the ideal remediation effect

Images