流溪河水库水环境容量研究

研究在流溪河水库水质现状调查的基础上,结合历史调查资料,采用了Vollenweider模型、OECD模型对流溪河水库水质进行了模拟并对TN、TP水环境容量进行了计算。结果表明,水库的TN、TP水环境容量在2005-2009年间分别是364.21-661.49 t/a、25.37-44.15 t/a,水环境容量与降雨量呈正相关,由于水库的降雨量年际变化比较大,导致水库的水环境容量的年际变化也较大。从流溪河水库4年的平均状况来看,水库总氮没有剩余容量,应削减负荷22.53%,总磷的剩余容量为2.27t/a,占其总环境容量的比重为18.27%。

Research on Water Environment Capacity of Liuxihe Reservoir

Models of Vollenweider and OECD were used to simulate the water quality of Liuxihe reservoir and studies were carried out on the basis of on-site investigation combined with historical data collection. The verified models were used to calculate the water environment capacities of TN and TP. Results showed that the water environment capacities were TN 364.21-661.49 t/a and TP 25.37-44.15 t/a during 2005-2009, which had a positive correlation with precipitation and varied with the annual changes of precipitation. When compared with the practical pollution loads of the reservoir, there was no surplus capacity for the pollutants of TN and 22.53% of the pollution loads should be cut off, while the surplus capacity of TP was 2.27t/a, which took 18.27% of the whole capacity.