湘江流域株洲段重金属水环境质量评价及藻类吸附模型

Environmental Quality Assessment on Heavy Metal Contaminated Water of Xiangjiang River in Zhuzhou City and the Algae Biosorption Model

利用湘江流域株洲段各断面4种生物毒性显著的重金属Hg,Cd,As,Pb的污染监控数据,采用综合重金属污染指数,评价了各断面及全段地面水的重金属污染等级。评价结果表明:湘江株洲段各断面均达到Ⅰ～Ⅱ类水质标准,水质良好,全段地表水的重金属污染程度较轻,但镉污染略显严重。通过比较分析,建议政府环保部门如果采用藻类植物对湘江株洲段各排污口的重金属进行生物吸附,则宜选择三方程吸附模型对吸附效果进行分析和处理。

Based on the contamination monitoring data of 4 kinds of biological toxicity of heavy metals Hg, Cd, As and Pb in Xiangjiang river of Zhuzhou section, assessed the heavy metal pollution levels of surface water in each section and the whole section of Zhuzhou by the comprehensive heavy metal pollution index. The assessment results showed that the surface water quality levels of Xiangjiang river in Zhuzhou city were I or II and the water was contaminated by heavy metals lightly apart from cadmium. Through the comparative analysis, suggests that the government environmental protection department adopts the three equations biosorption model to analyze the biosorption effect when using algae for biosorption of the heavy metals in sewage outlets of the main sections of Xiangjiang river in Zhuzhou city.