Complex microbial inoculant for petroleum hydrocarbon and benzene series treatment as well as preparation method and application thereof

Abstract

The invention relates to the field of biotechnology and environmental protection, in particular to a microbial inoculant, and particularly relates to a complex microbial inoculant for petroleum hydrocarbon and benzene series treatment as well as a preparation method and application thereof. The active ingredients of the complex microbial inoculant comprise aspergillus oryzae, streptomyces, pseudomonas putida, pseudomonas alcaligenes, brevibacterium epidermidis and Erwinia; and the complex microbial inoculant is especially suitable for treating soil polluted by petroleum hydrocarbon and benzeneseries. After the complex microbial inoculant disclosed by the invention is added into the soil polluted by the petroleum hydrocarbon and benzene series, indigenous degrading flora can be rapidly propagated, and the remediation process can be rapidly started; in the repairing process, the indigenous degrading bacteria are always in the dominant flora status, and high degradation efficiency is kept for a long time through the synergistic cooperation of the flora in the complex microbial inoculant; and finally, the polluted soil is completely repaired, the degradation rate of petroleum hydrocarbon and benzene series is high, and the removal rate of BTEX and TPH can reach 98% or above.

Description

technical field [0001] The invention relates to the fields of biotechnology and environmental protection, in particular to a bacterial agent, in particular to a compound microbial agent for treating petroleum hydrocarbons and benzene series, as well as its preparation method and application. Background technique [0002] In the process of oil extraction, transportation, processing, and use, oil leakage will inevitably occur, causing environmental pollution. With the increasing demand for oil, the environmental pollution caused by it is becoming more and more serious; especially after the oil spill pollutes the soil, it destroys the ecological environment and production performance of the polluted land, causing a lot of waste of land and arable land resources; and , groundwater pollution due to infiltration, which in turn affects water security. In addition, the processing and production of petroleum products and the use of various products have also caused serious pollution...

AI Technical Summary

Problems solved by technology

At the same time, exogenous microorganisms and indigenous microorganisms have different characteristics. Most of the exogenous microorganisms are microorganisms with good petroleum hydrocarbon and benzene series degradation ability after screening, but the adaptability of exogenous microorganisms to the polluted soil environment and the indigenous The competitive relationship of microorganisms limits the application scope and application effect of exogenous microbial agents; the indigenous microorganisms are mostly the dominant flora in the polluted soil environment, and have good adaptability to the local environment and high degradation ability, but in the natural Limited by the physical and chemical properties of the polluted soil and the lack of nutrients such as nitrogen and phosphorus, the degradation rate is very slow

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