辽河干流灌溉期水质变化规律

在2004年灌溉期辽河水平衡测试工作的基础上,通过对水质综合变化情况的分析与水质模拟,得出灌溉期水质变化的规律,并对其成因进行了分析。结果表明:灌溉期水库供水时,河流水质有其特殊的变化规律:供水初期水质恶化,然后水质逐渐好转并趋于稳定。对以后农业灌溉期水库供水安全保障措施实施以及“先冲污后供水”的水库供水运行调度方案制订,具有重要的指导意义。

Regularitiel of water quality variation during irrigation period of Liaohe River

Based on the water balance research of Liaohe River during the irrigation period in 2004,general regularities of water quality in irrigation period were concluded by the analysis and simulation of water quality,and the causes of the change were also analyzed.The special regularity of water quality variation in the river during the irrigation period was presented,i.e.water quality deteriorates at the beginning of water supply and will gradually be improved to a steady state.The result is of importance significance for the reliability of water supply during irrigation periods and the control methods of reservoir operation based on the concept of pollutant sluicing before water supply.