黄土高原的石油类物质坡面径流污染研究

延河流域石油类污染物的暴雨径流污染是当地地表水体的一种重要污染形式。为了探明石油类物质的径流污染规律，进行了室内模拟试验。结果表明：降雨强度、土壤污染强度、受雨坡面的坡度等因素都能明显影响降雨径流污染过程；污染过程中的水相石油类物质是由径流含沙量和径流泥沙石油污染强度共同决定的，在试验条件下，水相污染强度可达１．５６～５．１９ｍｇ／Ｌ，足以对径流造成严重的污染。

Study on Petroleum Runoff Pollution in the Loess Plateau

In Yan River watershed, oil runoff pollution is an important pollution form of surface water body. In order to verify the law of oil runoff pollution, an indoor simulation rainfall runoff experiment was carried out and some conclusions were drawn. The experimental results showed that rainfall intensity, oil pollution intensity of soils and field slope could greatly influence the rainfall pollution process. Oil concentration in water was determined by two factors. The first was the concentration of the sediment in runoff and the second was the oil pollution intensity of the sediment. Under the experiment conditions, the oil concentration ranged from 1.56 to 5.19 mg/L which could cause serious pollution in runoff.