含铅烟尘对土壤铅累积影响的预测研究

The Prediction Research on Soil Lead Cumulative Impact by Lead Dust and Smoke

以含铅烟尘为例,研究了大气铅沉降速度、土壤中铅的年输入量及其单位质量表层土壤中铅增量的计算方法,发现预测过程不需要计算受影响土壤的面积大小,可简化预测过程;并采用此预测方法,以实际工程为背景,说明了影响预测的计算过程和参数选择。

According to the Technical guidelines for environmental impact assessment-soil environment (HJ964-2018), the pollutants that involve atmospheric sedimentation needed to calculate their sedimentation velocity into the soil at first. The soil cumulative impact was then predicted based on their cumulative characteristic in soil. In order to detail the prediction method of these pollutants, the calculation methods of lead sedimentation velocity in atmosphere, lead input quantity annually in soil and lead increment in surface soil were studied and presented. The results showed that the affected soil area was not needed to calculate in prediction procedure, which will simplify the prediction procedure. The prediction procedure and parameters selection were also described based on a real project based on the prediction method.