| The rapid economic development,large-scale industrial industry and population concentration in the area along the Yangtze River in southern Jiangsu inevitably bring the problem of water pollution prevention and control.In addition,the speed and volume of rural economic development under the economic development mode in southern Jiangsu is very large,so how to improve the ecological water environment while maintaining steady economic growth has become a key issue.In this paper,the water environment of Liuhe Town,Taicang City is taken as the research object,and the hydraulic characteristics of the water environment in this town are simulated by using the method of model test,and then the optimized scheme for improving the water environment quality is put forward.Follows are the original points of this thesis:According to the preliminary analysis of water system dispatching scheme,based on the investigation of basic numerical simulation and drainage such as water consumption,sewage discharge and river section,the HEC-RAS model hydraulic model is adopted,and the scheme of preliminary water environment improvement planning is simulated and analyzed,so as to determine the emergency situation and the best water diversion and water transfer mode for normal operation,and further verify the rationality of the simulation optimization scheme and the accuracy of calculation.In addition,aiming at the formulation of specific plans for water environment improvement,the analysis is carried out from three directions:water pollution control in towns,domestic sewage control in rural areas,and special sewage rectification in water conservancy projects.Finally,aiming at the implementation of the water environment improvement scheme,starting from the concrete reality and combining with the reality of Liuhe Town,Taicang City,this paper further analyzes the direction and points for attention of the scheme implementation,and grasps the effective development of the scheme macroscopically.The research results of water environment improvement in Liuhe Town,Taicang City in this paper can provide improvement measures and suggestions for improving ecological water environment in villages and towns along the Yangtze River in southern Jiangsu Province,which acts as an crucial part to economic development and balance of ecological environment,and can also provide some reference for water environment improvement in villages and towns all over the country. |