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Oil, mining, smelting , use and contamination during transport and omissions accidents, as well as the discharge of oily wastewater , sewage irrigation, various petroleum products, volatile , falling incomplete combustion caused by a series of oil-contaminated soil problem . Especially oil extraction process produces landing crude oil, mineral oil contaminated soil has become an important source . Oil is chemically different from the thousands of a complex mixture of substances , including saturated hydrocarbons, aromatic compounds, asphaltenes , resins and the like. Many studies have shown that some petroleum hydrocarbons into the animal body, to mammals and humans have carcinogenic , teratogenic and mutagenic effects . Cause serious pollution of soil petroleum hydrocarbon accumulation of certain ingredients in food , affecting food quality , and through the food chain and endanger human health . With a large number of loess region's oil exploitation , oil pollution in the area has become increasingly serious . Petroleum development environment changes the geology of the area , and the geological environment changes , in turn, affect the production of crude oil . In order to restore the original ecological environment , the paper describes the seriousness of oil pollution , microbial degradation proposed repair methods . Through contaminated water within the soil sample collection , analysis, research the area of microbial environment ( micro- geological environment ) , thus establishing the microbial remediation of the guiding ideology, an experimental method for the study were done and polluted indoor simulation situ remediation experiment . Room for two batches of experiments , in situ experimental study of the effect of different additives on the impact of repair . In both indoor and outdoor experiments were made ??on the basis of the success of micro-organisms in contaminated repair technology feasibility .
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