邕江水源地上游水环境容量计算及预测

通过计算邕江上游的水环境容量,对邕江水环境容量的价值做进一步的讨论,确保水源地的安全。分析了邕江水源地上游河段的水文特征,以具有代表性的COD和NH3-N为控制因子,选用水环境容量二维模型,按照水情保证率95%进行计算。得出2007年COD和NH3-N的已利用容量为2751.37t/a和117.63t/a。在对邕江水质进行评价的基础上,还预测出邕江水源地上游河段的COD和NH3-N剩余水环境容量呈上升趋势,这表明水源地上游水质安全。

Water Environmental Capacity Calculation and Prediction of the Upstream of Yongjiang River

Water environmental capacity of Yongjiang River was discussed,based on the results of caculating water environmental capacity of the upstream,to insure the safety of water bodies.The hydrological characteristics of the upstream of Yongjiang River were analyzed and COD and NH3-N were selected as the main controlling factors according to water quality monitoring data.Two-Dimensional model of water environmental capacity was used to calculate under the water regime guarantee rate of 95%.The results showed that the current used water environmental capacity of COD and NH3-N were 2 751.37 t/a and 117.63 t/a,respectively.Based on the evaluation of Yongjiang River＇s water quality,the prediction on remained water environmental capacity of COD and NH3-N in the upstream of Yongjiang River showed increasing trend,which indicated that water quality of the upstream of Yongjiang River was safe.