废渣中氰化物对地下水污染影响的试验研究  

Study on Effect of Cyanide in Cyanide Slag on The Ground Water Pol

作　　者：王而力 李英姝 庄晶 

机构地区：[1]阜新市环境监测中心站,阜新123000

出　　处：《辽宁城乡环境科技》2000年第6期11-14,共4页Liaoning Urban and Rural Environmental Science & Technology

摘　　要：通过模拟淋溶试验 ,研究了含氰废渣中氰化物对地下水污染的可能性。结果表明 ,含氰废渣中氰化物可被天然降水淋溶 ,对地下水产生污染。新排放矿渣初次淋溶液总氰化物浓度可达104.85mg/L,易释放氰化物浓度可达62.0mg/L,总氰化物浸出量为36.8mg/kg矿渣 ,易释放氰化物浸出量为18.7mg/kg矿渣 ;新排放矿渣经曝晒处理后 ,初次淋溶液总氰化物和易释放氰化物和易释放氰化物浓度可分别降至31.29mg/L和0.81mg/L,浸出量分别降至9.4mg/kg矿渣和0.5mg/kg矿渣 ,矿渣中总氰化物和易释放氰化物的曝晒去除率分别为74.5%和97.3% ;淋溶液氰化物浓度与淋溶水量呈幂函数(C=mRn)关系 ,氰化物累积溶出量与淋溶水量呈对数函数(Q=a+blnR)关系。Studies were undetaken on the possibility of cyanide in cyanide slag on ground water pollution by simulated leaching test.The results showed that cyanide in cyanide slag may contaminate ground water in process of leaching by rainfall.Total cyanide concentration in first leaching liquid of fresh slag is 104.85 mg/L.Easy released cyanide concentration is 62.07 mg/L.The leachable quantity oftotal cyanide in fresh slag is 36.8 mg/kg slag,the leachable quantity of easy released cyanide in fresh slag is 18.7 mg/kg slag.After fresh slag was exposed to sunlight,The concentrations of total cyanide and easy released cyanide in first leaching liquid can be reduced respectively to 31.29 mg/L and 0.81 mg/L.The leachable quantities of total cyanide and easy releasen cyanide can be reduced respectively to 9.4 mg/kg slag and 0.5 mg/kg slag.The removal rates of total cyanide and easy released cyanide are 74.5% and 97.3% respectively.The relationship between cyanide concentration in leaching liquid and the quantity of leaching water tallied with power functions C=mRn. The relationship between accumulative leaching quantity of cyanide and the quantity of leaching water tallied with logarithm functions Q=a+blnR.

关 键 词：含氰废渣 氰化物 淋溶试验 地下水污染 

分 类 号：X523.01[环境科学与工程—环境工程]