Research On Water Quality Prediction And Water Pollution Control Measures Of The Three Georges Reservoir

After the construction of the Three Gorges Reservoir, great changes of the flow and quality situation of water will happen in ChangJiang segment of Three Gorges Reservoir area. Especially, with the development of economy in Three Gorges Reservoir area, there is an increasing trend in discharge of pollutants, greatly affecting the water quality environment. How to ensure the Three Gorges Reservoir realize its social, economic, environmental benefits and the safety of water environment in the Three Gorges Reservoir area, becomes an important problem to be solved.The paper brings forward the two dimensional stochastic model for water quality prediction and gets the probability distribution of water quality after the construction of the Three Gorges Reservoir, providing more information for management and development of the Three Gorges Reservoir area.The movement and diffusion process of pollutants in current of water are affected by water temperature, local flow velocity and direction, stream shape, and so on. Therefore, any pollutant concentration in the backward position of sewer outlet is a variable, not a constant. Apparently, to precisely describe and simulate the trend of water quality variation of the ChangJiang artery after construction of the Three Gorges Reservoir, the stochastic model is needed. We set up a two dimensional stochastic model to predict the trend of water quality variation. The ecological situation was not so good and there is a severe pollution of water in the Three Gorges Reservoir area. It is very difficult to solve the water pollution thoroughly by the simple end prevention. Therefore, on the basis of the sustainable development principle and safety of water situation, the paper puts forward measures of water quality control from the point of view of management in the Three Gorges Reservoir area.