摘要
为了调查某有色金属矿山坑内废水污灌区河流污染状况 ,在半年时间里 ,对该河流的 pH和Pb、Zn、Cd、As、U离子以及COD、BOD等 12项指标取样分析。根据测定结果 ,本文选取了其中的Pb、Zn、Cd、As和U五个重金属因子 ,就该纳污河流的重金属离子污染进行了综合评价。同时 ,应用密切值法对河流各监测断面进行了计算和比较 ,应用环境综合指数向量分析法计算了各评价因子污染分指数和综合指数。评价结果表明 :该坑道废水纳污河流已受到了重金属的严重污染 ,污染总指数高达2 5 0 8。坑道废水纳污河流各监测断面重金属离子浓度沿河流流向呈下降趋势 ,重金属离子在河流中有一定的沉降和滞留。该项评价可供类似环境评价项目参考。
In order to investigate pollution of the river near to a metal mine,a great number of river-water samples were taken and analyzed for the pH,ions of Pb,Zn,Cd,As and U,COD and BOD for six months On the basis of testing results,Pb,Zn,Cd,As and U ions were taken as the factors to assess the heavy-metal pollution of the river Also,the intimated method and synthetic indicator method were used to treat the achieved data and get the pollution indexes for monitored sections of the river The assessment results show that the river water has been seriously polluted by the heavy-metal ions,and the total pollution index is up to 25 08 The concentration of heavy-metal ions decreases along the flowing direction and partial pollutants subside along the river In summary,the investigation practice can be taken as a referring example for similar cases
出处
《矿冶》
CAS
2004年第1期86-90,共5页
Mining And Metallurgy
基金
中南大学研究生创新项目
