Abstract： With the development of the Poyang Lake Ecological Economic Zone,the problem of water environmental protection for Poyang Lake caused great concern.By mathematically modeling the water quality,and using the computer to obtain the model solution,water quality simulation or prediction,we could design the corresponding water quality simulation software to simulate the diffusion of sewage,which is an effective means of water pollution control and water environment management of Poyang Lake.Because of several reasons,such as the extortionate price,the restricted usage of the foreign three-dimensional water quality simulation software and the specific applied research needs for the three-dimensional water quality simulation of Poyang Lake,it designed the WSAT/H3D-PYH,a software tool to simulate and analyze the three-dimensional water quality of Poyang Lake.The structured development methodology of software engineering and the graphical visualization techniques were employed in this software.The experiments of BOD and DO dispersion simulation and trend prediction based on the software tool indicated that there was good prediction accuracy,and the water quality trends of the future period of time could be analyzed and predicted visually.Meanwhile,the tool could execute the dynamic simulation for the pollution dispersion of the local point sources of pollution,which should facilitate to estimate the aftereffect for the unexpected pollution events in advance,and provide an excellent basis for setting down a sound follow-up treatment measures.
2012, Vol. 36 
