水系调度对锡山区水环境改善效果分析

针对锡山区城市河网流动性差、水环境污染日益严重的问题,基于实测资料,利用MIKE11构建水动力水质耦合数学模型,综合考虑研究区内多种水利工程联合调度,以NH3-N为污染因子,模拟多种水系调度方案,分析水系调度对研究区水体流动性和水质的改善效果。结果显示,水系调度可提高研究区河道的流动性,加快水体更换;科学合理的水系调度方案可大幅降低研究区大部分考核断面的氨氮浓度,使水质达到Ⅳ类甚至更优,有效改善研究区水环境状况。

Effect Analysis of Water Transfer on Water Environment Improvement in Xishan Region

Aiming at the problems of poor mobility of urban river network and increasingly serious water pollution in Xishan District,based on the observed data,a hydrodynamic water quality coupling model was constructed by MIKE11.Considering the joint operation of various water conservancy projects in the study area,NH3-N was used as the pollution factor,simulating a variety of water transfer schemes were simulated.The effect of water system regulation on the improvement of water flow and quality was analyzed.The results show that water transfer can improve the fluidity of the river and accelerate the replacement of water body;Scientific and reasonable water transfer scheme can greatly reduce the pollutant concentration of most monitoring sections in the study area,make the water quality reach class IV or even better,and effectively improve water environment in the study area.