Compound remediation agent for clearing soil contaminated by petroleum and remediation method of compound remediation agent

Abstract

The invention discloses a compound remediation agent for clearing soil contaminated by petroleum and a remediation method of the compound remediation agent. The compound remediation agent is preparedfrom the following components in parts by weight: 10-20 parts of biochar, 3-5 parts of monopotassium phosphate, 4-6 parts of calcium nitrate, 3-6 parts of perlite, 3-8 parts of ceramsite, 2-5 parts ofwood chips, 5-10 parts of vermiculite, 2-6 parts of magnesium sulfate, 3-6 parts of pine needle, 5-8 parts of chicken manure and 15-30 parts of microbial preparation, wherein the microbial preparation is prepared from the following bacterium suspension in parts by weight: 10-15 parts of bacillus thermophiles, 5-8 parts of bacillus natto, 6-10 parts of aspergillus niger, 2-6 parts of bacillus subtilis, 2-5 parts of sulfur bacteria, 3-7 parts of photosynthetic bacteria and 2-5 parts of saccharomycetes; the bacterium suspension is obtained by performing fermentation and culturing on various microorganisms and has the concentration being larger than or equal to 10<5>cfu / mL. The invention discloses a remediation device for performing soil remediation by using the compound remediation agent forclearing the soil contaminated by the petroleum. Through the method for remediating the soil with the compound remediation agent provided by the invention and the remediation device, the compound remediation agent can be fully contacted to the contaminated soil, so that the remediation effect is remarkably improved to 96.5 percent, and secondary pollution to the soil cannot be caused.

Description

technical field [0001] The invention relates to the technical field of soil restoration, in particular to a compound restoration agent for cleaning oil-contaminated soil and a restoration method thereof. Background technique [0002] With the development of industry, the demand for oil is gradually increasing. In the process of large-scale oil extraction, transportation and processing, the ground crude oil produced by omissions, blowouts, oil pipeline leakage and other accidents seriously pollutes the soil environment, and in the rain Under the scouring action of the surface, it spreads to the surrounding area with the surface runoff, especially the soil pollution caused by oil spills. Soil oil pollution often has many types of pollutants, long incubation period, wide diffusion area, great harm, complex underground structure, and difficult treatment. Due to the high cost of restoration, due to the special physical and chemical properties of oil, it seriously threatens the sa...

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Problems solved by technology

[0002] With the development of industry, the demand for oil is gradually increasing. In the process of large-scale oil extraction, transportation and processing, the ground crude oil produced by omissions, blowouts, oil pipeline leakage and other accidents seriously pollutes the soil environment, and in the rain Under the scouring action of the surface, it spreads to the surrounding area with the surface runoff, especially the soil pollution caused by oil spills. Soil oil pollution often has many types of pollutants, long incubation period, wide diffusion area, great harm, complex underground structure, and difficult treatment. Due to the high cost of restoration, due to the special physical and chemical properties of oil, it seriously threatens the safety of the regional ecosystem, makes the ecosystem fragile, and poses great harm to human health, especially the hydrocarbon organics in the oil are difficult to degrade in the soil and It is toxic and makes it difficult to cultivate the soil. Moreover, if the pollutants are enriched in the crops, it will seriously endanger human monitoring. Therefore, it is very important to restore the oil-contaminated soil and restore its ecological functions. Oil-contaminated soil Restoration agents, restoration methods and devices have become a vital need for environmental protection at this stage

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