新沟河排水对太湖水环境影响研究

太湖西北部尤其是梅梁湖水质较差,新沟河延伸拓浚工程实施后,可通过外排梅梁湖水改变太湖的水动力水质环境.利用Mike21建立太湖二维水动力水质数学模型,研究该工程实施后对太湖水动力水质的影响.研究得到:新沟河工程实施后,可有效改善梅梁湖的水动力条件,梅梁湖换水周期缩短13.3％;同时,梅梁湖CODMn、 TP、TN等主要...

Research on the Influence of Xingou River Drainage on the Water Environment of Taihu Lake

The water quality in north-west of Taihu Lake especially in Meiliang Lake is rather bad,after the construction of Xingou river extension and dredging engineering,hydrodynamic characteristic and water quality of Taihu Lake can be changed by draining water from Meiliang Lake.Through construction of 2D hydrodynamic and water quality mathematical model of Taihu Lake using Mike21,the influence of the project on hydrodynamic and water quality of Taihu Lake was studied.The results showed that after the construction of Xingou river project,the hydrodynamic conditions of Meiliang Lake is improved effectively,the water age of Meiliang Lake is shorten by 13.3%.Meanwhile,the concentrations of CODMn,TP,TN and other major pollutants in Meiliang Lake decreased by 30%,and those in Taihu Lake decreased by about 10%,indicating that the construction of Xingou river project could improve the hydrodynamic characteristic and water quality of Taihu Lake especially Meiliang Lake.Furthermore,combined with the water diversion of Wangyu River,the improvement effect of water environment in Taihu Lake under the new drainage pattern can be studied,and the optimal dispatching strategy can be proposed to provide technical support for the improvement of water environment in Taihu Lake.