某金矿废水中氰化物的自然降解及其环境影响分析  

Natural degradation and environmental impact of cyanide from a goldmine

作　　者：张宏华[1] 王罡 张志明 

机构地区：[1]浙江工业大学生物与环境工程学院,浙江杭州310032 [2]杭州经济技术开发区建设(环保)局,浙江杭州310000 [3]遂昌县环境监测站,浙江遂昌323300

出　　处：《浙江工业大学学报》2012年第3期299-302,共4页Journal of Zhejiang University of Technology

摘　　要：通过对某金矿排放口下游沿线的地表水实地调查监测,研究了氰化物在地表水中的自然降解规律及排放氰化物对下游水体的影响程度.实验结果说明:氰化物在水中自然降解的速度较快,并且夏季时降解得比冬季更快.在总排口至下游1.5km河段的降解系数K值分别为冬季98.4d-1,夏季为170d-1.正常废水排放情况下,在排放口下游1.5km以下河段符合GB 3838—2002《地表水环境质量标准》中的Ⅱ类水质标准,事故性排放的除外.The natural degradation of cyanide in surface water and che impact of discharged cyanide on downstream water bodies were studied through field investigation and surface water monitoring along the downstream of the outfall on a gold mine. The results showed that natural degradation of cyanide in the water is fast, especially in the high temperature, and the degradation coefficient（K） from outlet to the 1.5 km river downstream is 98.4 d 1 in winter and 170 d-1 in summer respectively. In normal wastewater discharge, the water quality of the downstream which is 1. 5 km away from outfall can meet the GB 3838--2002 in the Grade II standard, except for accidental emissions.

关 键 词：氰化物 自然降解 降解系数 

分 类 号：X522[环境科学与工程—环境工程]