【摘要】 [目的]通过对地表水源水的检测结果分析并提出建议,为地震灾后政府制定生活饮用水卫生安全措施提供依据。[方法]横断面调查,对唐家山堰塞湖泄洪前后一日的地表水源水检测结果进行对比分析。[结果]绵阳地表水源水泄洪前符合Ⅱ类水质要求,泄洪后铁、锰分别超标21.9倍和26.5倍,总氮、总磷和粪大肠菌群分别超标1.8倍、0.2倍和0.63倍,氯化物、敌敌畏等项目低于标准限值。[结论]铁、锰、总氮、总磷和粪大肠菌群超标是唐家山堰塞湖泄洪后绵阳地表水源水质较差的主要原因。建议扩大地表水源水的监测范围和增加监测频率,及时从源头掌握水质状况及主要污染物的变化。更多还原

【Abstract】 [Objective] To detect and analyze the surface water and provide suggestion to the government who take measures about the sanitation security in drinking water.[Methods] The detect results of surface water in Tangjiashan lake preand post-releasing floodwater one day were analyzed by statistical method through cross-sectional study.[Results] The data of the surface water in Mianyang before releasing floodwater attained the requirements of Grade Ⅱ water quality.The indexes of Fe and Mn of the surface water after releasing floodwater exceeded 21.9 and 26.5 times respectively than previous data.Total nitrogen,total phosphorus and fecal coliform exceeded 1.8,0.2 and 0.63 times,whereas the indexes of chloridum and dichlorovos were below standard limits.[Conclusion] The overproof Fe,Mn,total nitrogen,total phosphorus and fecal coliform are the main reason that the surface water of Mianyang became worse after the floodwater in Tangjiashan lake released.It is suggested that the extent and frequency of the surface water monitor should be strengthen and the main pollutant’ s change and the condition of water quality should be control promptly.更多还原