滹沱河流的水质模拟

WATER QUALITY MODEL OF THE HUTUO RIVER

采用“计算机扫描计算——梯度搜索法确定滹沱河流的水质模型参数”一文中所得的全局最优解 K_1=0.29—0.52d^(-1)和 K_2=0.43—0.67d^(-1),而建立的模型,就能准确模拟滹沱河的自净过程,且与实测数据非常吻合。所建的模型还用于在不同条件下计算滹沱河的自净容量,而且预测了枯水期和丰水期时该河流自净能力内能够承受的 BOD 负荷的增长。

This paper mainly deals with using the computer scanning cal- culation-gradient search method to determine the parameters of water quali- ty model.Also,by this method,the global optimum solutions were obtained with K_1=0.29—0.52d^(-1) andK_2=0.43—0.67d^(-1).The established model with the caculated optimal values of K_1 and K_2 can simulate the self-purification process of the Hutuo river accurately with little errors compared with the measured values. The developed model has been applied to calculate the self-purification capacities of the Hutuo river under different conditions and to predict the BOD load increases that can be accepted by the river within its self-purific- ation capacities in dry flow and abundant flow period.