水库底泥污染物释放模拟研究

Simulative reasearch on pollutants release from sediments of reservoir

通过对底泥主要污染物稳定性实验研究及模型分析,了解底泥污染物释放对水库库区水体水质的影响,为水库底泥处置和底泥污染治理工作提供技术依据和指导性分析。通过对底泥动态释放模拟实验,对底泥中部分重金属Cd、Mn、Zn及TN、P对水体的污染程度进行了分析和预测。其结果表明:底泥中重金属Zn、Cd、Mn的释放速率及年释放量较低,对于库区水体水质影响较小;TN和P的释放速率及释放量较高,对于库区水体水质影响较大。这些结果对确定底泥的处理方案及防止底泥二次污染具有一定的借鉴意义。

Based on the experimental research on the stability of main pollutants in sediments and its model analysis, the influence of sediment contamination release to reservoir water quality is understood, and it provides a technical basis and guidance for sediment disposal and sediment pollution control. According to the dynamic simulation of sediment release, some heavy metals such as Cd, Mn, Zn, and TN, P are analyzed and forecasted. The results indicate that the release rate and the release quantity of heavy metals in sediments such as Zn, Cd, Mn are low, have little effect on the water quality of the reservoir. On the other hand, the release rate and the release quantity of TN and P are high, and have bad influence on water quality of the reservoir. The results have a certain guiding significance to determine the sediment treatment and prevent the sediment secondary pollution.