北方某稀土尾矿库周边地下水污染特征与评价

Groundwater Pollution Characteristics and Evaluation around a Rare-earth Tailings in North of China

通过对北方某稀土尾矿库周边地下水各类元素含量的测定、研究、评价来确定尾矿库地下水污染情况,通过现场调研与取样,理论分析及数值模拟的思路对尾矿库的污染物污染地下水的规律及预测进行研究,应用MATLAB求解尾矿库地下水污染物运移模型。得出结论是尾矿库地下水中主要污染物是Cl-、SO2-4、Mn、B、亚硝酸盐、氨氮、总硬度、TDS。初步确定尾矿库地下水污染范围距离尾矿库中心约为4 km远处。

Groundwater pollution around a tailing pond in Northern China was invesigated and evaluated by determing the contents of various elements. Based on field investigation,sampling,theoretical analysis and numerical modeling,the pollution pattern was summarized and some predictions were made. MATLAB was used to set up a model for contaminant tramsport. It draws a conclusion that the main contaminants in the underground water from tailing pond are Cl-,SO2-4,Mn,B,nitrite,ammonia nitrogen,total hardness and TDS. The contaminated area is within a 4 km from the center of the tailing pond.