大冶毛铺水库水质现状调查及环境质量风险分析

为探索大冶毛铺水库水质污染情况,对水中的悬浮物(SS)、总氮(TN)、总磷(TP)、化学需氧量(COD)、溶解氧(DO)、铜(Cu)、镉(Cd)、锌(Zn)和铅(Pb)进行测定分析,同时,采用单因子指数法和综合污染指数法及不同评价标准来评价其环境质量,并解析了其污染的可能来源。结果表明:所有采样点TN及TP(除6号外)含量均超过Ⅴ类水的标准,存在水体富营养化的风险。4号～8号采样点的Cd含量(0.008～0.011 mg/L)较高。单因子指数评价结果表明,所有采样点水质均为劣Ⅴ类级别。综合污染指数评价结果表明,6号采样点水质基本达标,其他采样点的水质均不同程度上受到污染。毛铺水库不再是水产养殖等渔业的理想水域。

Preliminary Investigation of Water Quality and Analysis of Enviormental Quality Risk of Maopu Reservoir in Daye

The contents of suspended matters(SS),total nitrogen(TN),total phosphorus(TP),chemical oxygen demand(COD),dissolved oxygen(DO),copper(Cu),cadmium(Cd),zinc(Zn) and lead(Pb) in water of Maopu reservoir in Daye were investigated to evaluate water environmental pollution by using single factor index method and comprehensive pollution index method and different evaluation standards of pollution for comparison,the potential sources of pollutants in water were also elucidated.The results showed that TN and TP contents(except for No.6) in all sampling points were over V type water standards,the water eutrophication risk existed.Cd contents(0.008~0.011 mg/L) of No.4,No.5,No.6,No.7 and No.8 sampling points were higher than others.The evaluation results by using single factor index indicated that water quality of all the sampling points were below Ⅴclass level.Comprehensive pollution index assessment results showed that the water quality in No.6 sampling point was basically qualified,and the water in other sampling points were polluted.Maopu reservoir had not ideal waters for aquaculture and fisheries.