海南昌江石碌钴铜矿尾矿库重金属污染环境现状调查

为了解海南省昌江县石碌镇钴铜矿尾矿库环境特点,分别采集了矿砂、背景土壤、废水、纳污水体和植物进行分析。结果表明,钴铜矿尾矿库的土壤受As和Cu污染严重,周边土壤受到不同程度的重金属污染;废水经过尾矿库沉淀处理后,SS、As、Cu、Co、Fe等监测指标均有所降低,尾矿库起到沉淀吸附处理作用;纳污河流石碌河水质良好;尾矿库内自然生长的菖蒲和水竹均受到重金属不同程度污染,尾矿库内的甘蔗中Cr、Pb含量均超过食品中污染物限量标准,表明尾矿库内不宜种植可食用作物。

Investigation on Heavy Metal Pollution of Co and Cu Mine Waste Dump in Changjiang, Hainan Province of China

Co and Cu mine waste dump was investigated on Shilu,Changjiang county,Hainan province of China.The ore,soils,waste water,river water and plant in the waste dump were analyzed for environmental evaluation.The results indicated that the soil in the dump and around the dump was seriously polluted by As and Cu as well as other heavy metals.After mine wastewater had passed the dump for precipitation-absorption reaction,the concentrations of SS,As,Cu,Co and Fe were dropped to keep pollutant carrying Shilu river had good water quality.The plants of Acorus Calamus Linn and Phyllostachys Heteroclada Oliver were polluted by the heavy metals in the mine waste dump.The concentration of Cr and Pb in the Saccharum Sinensis Roxb grown in the dump was higher than national food standard limits to show the soil was inadvisable to grow edible plants for both people and animals.