多目标协控下伊洛河自净需水流量研究

建立基于河道边界条件水动力学与水质相耦合模型,结合伊洛河生态系统特点及功能性需水组成,以河流水功能区水质目标作为协控因子,进一步考虑伊洛河河口黄河鲤繁殖期对水质的要求进行自净需水流量计算。结果表明,伊洛河在现状排污与控制排污条件下,黑石关断面达到水功能区水质目标Ⅳ类的自净需水流量分别为14.00 m~3/s和8.00 m~3/s;满足4—6月基本维持鱼类正常繁育水质要求的自净需水流量为13.62 m~3/s,维持鱼类良好繁育状态下水质要求的自净需水流量为35.80 m~3/s

Study on self-purification water demand flow in the Yiluo River under multi-objective coordination control

A coupling model of hydrodynamics and water quality has been established based on river boundary conditions. Combined with the characteristic of the ecosystem and the composition of functional water demand in the Yiluo River, taking the water quality target of the water function zone as the co-control factor, and considering the water quality requirements of the Cyprinus Carpio in the breeding season in the Yiluo River Estuary, the self-purification water demand flow was calculated. The results indicate that under the condition of the current status of pollution discharge into river, and meeting the limit of total emission control, the self-purification water demand flow are 14.0m³/s and 8.0m³/s, respectively, to reach the water quality target of class IV; The self-purification water demand flow of maintaining the water quality of normal fish breeding from April to June is 13.62 m³/s, and the self-purification water demand flow of maintaining the water quality of fish in good breeding condition is 35.80m³/s.