Soil remediation composition and application and soil bio-remediation method

Abstract

The invention relates to the field of environmental protection, in particular to a soil remediation composition and an application and a soil bio-remediation method. The soil remediation composition comprises a water retaining agent, a soil conditioner, nutrients, polyaspartic acid and a mixed microbial agent, wherein the mixed microbial agent is a mixed microbial agent of bacteria and fungi. Theapplication is an application of the soil remediation composition in soil remediation. The method includes repairing soil using the soil repairing composition as described above. By introducing the microbial agents (bacteria and fungi) capable of degrading petroleum hydrocarbons into the soil, and simultaneously introducing components (such as the soil conditioner, the nutrients, the polyasparticacid, the water retaining agent and the like) which have an improvement effect on the soil quality, the microbial agents are promoted to propagate in the soil, and pollutants in the soil are promotedto be degraded, and thus a better soil remediation effect is obtained. The soil remediation composition does not cause secondary soil pollution or damage the soil environment, and has low cost and simple operation.

Description

technical field [0001] The present invention relates to the field of environmental protection, in particular to soil remediation compositions and applications and soil bioremediation methods. Background technique [0002] During the process of oil exploration, mining, transportation, refining, etc., due to improper operation or accidental leakage, part of the oil spills into the soil, causing petroleum hydrocarbon pollution in the soil. The world's annual petroleum pollutants discharged into the environment through crude oil landing and accidental leakage are about 8×10 6 t, petroleum hydrocarbon pollution has become the focus of world attention. In the 1980s, serious petroleum hydrocarbon soil pollution problems appeared in the United States. About half of its 450,000 brownfields were polluted by petroleum hydrocarbons. During the same period, the oil hydrocarbon-contaminated sites in Canada were as high as 60%, and many areas and factories in the United Kingdom also had s...

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Problems solved by technology

[0010] The purpose of the present invention is to overcome the defective that prior art uses the method for bioremediation to the soil remediation effect of petroleum hydrocarbon contamination poor, provides a kind of soil remediation composition and soil bioremediation method, can obtain comparatively according to the method of the present invention Good soil remediation effect, and the composition and method of the present invention are particularly suitable for the remediation of petroleum hydrocarbon-contaminated soil, especially for the remediation of refractory petroleum hydrocarbon-contaminated soil and the remediation of deep petroleum hydrocarbon-contaminated soil

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