石油类污染物在土壤中的迁移渗透规律

在石油勘探开发过程中 ,作为主要污染物的石油类物质可通过土壤下渗从而对地下水产生不利影响。利用土柱淋滤实验、原油渗透实验和土壤微生物降解实验等方法对石油类物质在土壤中的降解规律、土壤截留率及土壤中微生物降解效率进行了研究。结果表明 ,土壤对石油类物质虽然具有很强的截留能力 ,但是其截留能力有一定的限度。超过该限度 ,石油类物质将穿透土层直接威胁地下水的质量。掌握石油类污染物的迁移规律可以为石油勘探开发中控制污染物提供理论依据

STUDY ON MIGRATION AND PENETRATING LAW OF OIL POLLUTANT IN SOIL

In the process of petroleum exploration and exploitation, oil impergnation as the main pollution in soil can affect the underground water quality. The oil degradation law, entrapped ratio of oil in soil and microbes degradation efficiency of oil pollution in soil are investigated by some experiments, such as earth\|pillar leaching, oil permeation and microbiological degradation methods. The test results show that oil pollutant can be entrapped by soil under a certain condition. Some chances should be paid attention to avoid oil penetrating into soil and prevent underground water from pollution.