A method based on combined oxidation of sodium persulfate complex and microbial flora bioaugmentation to treat heavily oil-contaminated soil or oil sludge

Abstract

The invention discloses a method for treating soil or oil sludge severely contaminated by petroleum based on combination of sodium persulfate compound oxidation and microbial flora biological enhancement. Contaminated soil or oil sludge is oxidized first with a sodium persulfate compound as the oxidizing agent in the presence of a surfactant, and then a mixed flora of bacillus sp. and acremonium sp. Y0997 or phanerochaete sp. F0996 is added twice continuously, so that intensified combined treatment of soil or oil sludge is achieved through intensified combination of chemical oxidization and fungus-bacterium flora biological sequences. In this way, the degrading efficiency of soil or oil sludge severely contaminated by petroleum can be improved remarkably, and repair period can be shortened greatly.

Description

technical field

[0001] The invention belongs to the technical field of chemical and biological remediation of heavily oil-contaminated soil or oil sludge, and specifically relates to a method for combined treatment of heavily oil-polluted soil or oil sludge by chemical oxidation and fungal-bacterial flora bioaugmentation in oilfield mining areas.

[0002] technical background

[0003] At present, with the development of domestic and foreign petroleum industries, the scope of petroleum-contaminated soil is constantly expanding. It is an urgent problem to be solved in the process of oil-contaminated soil treatment to treat oil-contaminated soil so that it can achieve the effect of recovery and utilization in a short period of time. For the treatment of pollutants, which method is the most suitable, in addition to considering the location of the pollutants, the amount of pollutants, the quality of the treatment effect, the length of time required and the length of the treatment,...

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