上海某饮用水源地富营养化及防治建议研究

Research on Eutrophication of one Drinking Water Source in Shanghai and Its Prevention and Control

在2010年至2012年进行的上海某水源地水质监测资料的基础上,着重分析了该水源地2011年1月至10月总磷、总氮等多个分析因子的季节变化规律及点位分布状况,得出该水源地水库水体总磷及溶解氧浓度均符合国家相关标准,但总氮超过相应类别的标准;水体中的总磷、总氮、水温、光照条件、叶绿素a、溶解氧、透明度等是影响水体富营养化的重要环境因子;水源地的水质在温度低于20℃的春、秋、冬三季藻类爆发的可能性较低,但温度较高的夏季,具有藻类爆发的可能性等结论。从而反映了该水源地的富营养化现状及对市民饮用水影响的重大意义,并提出了防治建议。

The quality of a drinking water source in Shanghai was monitored from 2010 to 2012. Based on the water monito- ring data during January to October in 2011, seasonal variation and distribution characteristics of several factors such as total phos- phorus, total nitrogen was analyzed. It is concluded that the total phosphorus and dissolved oxygen concentrations of the water source are in line with national standards, but the standard TN exceeded the corresponding category. Water total phosphorus, total nitrogen, temperature, light conditions, chlorophyll a, dissolved oxygen, transparency, etc. are important environmental factors affecting eutrophication. Water temperature is below 20 ℃ in spring and possibility of algae outbreak is low in autumn and winter, but the possibility is higher in the summer when temperature rises. This research showed the eutrophication status of the water source, having great importance for the drinking water quality. Several recommendations were proposed to prevent such pollution.