黄土地区石油类污染物的径流污染模拟及模型预测

在土壤石油污染负荷为721－16060mg/kg、暴雨强度为 0.5－1.70mm/min的条件下进行了室内径流污染模拟试验研究．结果表明，随土壤石油污染负荷的提高，产流量与释放至水中的污染物浓度均增大，但产沙量降低；随暴雨强度的增大，产流、产沙、产污的强度均提高．试验条件下释放于水中的石油污染物浓度可高达1.56－15.6mg/L，由此进一步表明，暴雨径流对水体造成的石油污染不可轻视．在试验研究基础上，建立了径流污染过程的稳态产流、产沙、产污模型；应用该组模型对土壤石油污染负荷为 7050mg/kg和不同雨强下的径流污染进行了预测，预测结果与试验模拟结果吻合良好

Simulating and modeling of the runoff pollution of petroleum pollutants in loess plateau.

An experiment to simulate the interior runoff pollution has been carried out under the petroleum concentration in the contaminated soils from 721 to 16060 mg/kg and the rainfall intensity from 0.5 to 1.70 mm/min. The results show that as the oil load in the contaminated soils increases, the runoff volume and oil concentration in water released from the contaminated soils increase also; but the sediment runoff concentration decreases; while a higher rainfall intensity leads to greater runoff volume, higher concentrations of sediment runoff and oil released into water. Under the experimental conditions, oil concentrations released into water range from 1.56 to 15.6 mg/L, which further indicates that much attention should be paid to oil pollution in water caused by rainfall runoff. A group of stable models of runoff volume, sediment runoff and oil concentration in water during the runoff pollution have been built on the basis of the experiment. An identical predicting result is obtained in applying these models to describe oil runoff pollution at the oil load of 7050mg/kg with variation of rainfall intensity.