白石水库水源水质动态模拟预测研究

Dynamic Simulation and Forecasting of Water Quality in Baishi Reservoir

采用动态模拟试验方法 ,对在建的白石水库建成后水中污染物进行了一个完整的水文周期年和气象周期年模拟预测。结果表明 ,库水对原水中各类污染物都有较强的自净能力 ,且受径流量、水质和水温影响较小。在大水体、不增加外来污染条件下 ,库水平衡稳定后 ,除阴离子表面活性剂和石油类指标为地表水Ⅳ类水标准、总氮为劣Ⅴ类水标准外 ,其它各项指标基本达到Ⅲ类水标准或更好。为确保库水Ⅲ类水质的目标 ,必须严格控制和治理水库控制流域内的污染。

The pollutants in the Baishi reservoir which is under construction are forecasted by dynamic simulation for a hydrological and meteorological year round. The result shows that there is self purification capacity to pollutants in the reservoir and it is stable, and slightly affected by the run off, water quality and temperature. If no additional pollution inputs, when the equilibrium of impounding to the dam is established, most water quality indicators of the mass of the reservoir will meet the target of class Ⅲ in the national surface water standard or better, except that the indicators of LAS and oil will be within class Ⅳ and total nitrogen in class V. Therefore the wastewater treatment and inputs into the basin must be controlled strictly.