浙江长潭水库富营养控制策略研究

饮用水供水水库一旦进入富营养状态,极易暴发藻华,将对水资源的利用和饮水安全构成严重威胁。根据2007-2008年长潭水库库区污染调查、水库水质监测等数据,采用水质模型模拟主要入库营养物质变化对表征水库营养化水平的主要指标叶绿素的影响,分析水库营养控制指标和削减量。结果表明,长潭水库主要营养控制指标为总磷,在现有入库总磷基础上,削减75%时,可控制水库叶绿素小于10 ug/L,能基本抑制水库营养化发展趋势。

Study on Eutrophication Controling Strategy of Changtan Reservoir in Zhejiang Province

Once being in rich nutrition conditions for the potable water supply reservoir,it would be very easily cause the outbreak of water algae and serious theat for water resources utilization and drinking water safety.On the basis of the pollution survey and water quality monitoring data for Changtan reservoir form 2007 to 2008,the effect of the fluctuations of the main nutrient getting into the reservoir on the chlorophyll of the main indexes which indicates the reservoir nourishing level was simulated by water quality model.Then,the reservoir nutrient control indexes and the capacity to be cut down were analysed.Results show that the main reservoir nutrient control indexes is for the tolal phosphorus.By reducing the reservoir total phosphorus on the basis of the existing by a factor of 4,that the chlorophyll content can be controlled to less than 10 ug/L and that the development trend of the reservoir nourishing can be restrained basically.