Study On Optimal Model Of Program Of Town Water Resources Protection

Water resources were the basic natural resources and strategical economy resources. With the incessant population increase, the social and economic development, and the people's living standard improvement, the contradiction of water supply and requirement was becoming more and more obtrusive. How to exploit and utilize water resources reasonably, harmonize the relationship between economic development and water resources protection, and ensure lasting use of water resources on the basis of the existing circumstance of water resources and the demand of social economy development, has become an emergent problem which should be solved.In this paper, the basic theories and methods of water demand prediction and pollution source prediction were elaborated, especially the grey method. The theories of water resources were analyzed, then, the connotation, object and main idea were discussed, fourthermore, the sustainable development stratagem was studied on and the method was proposed.Based on comprehensive consideration of economic benefit, social demand and environment effect, the optimal model of town water resources protection program was established. By use of entropic coefficient method, the multiple-object optimal model was changed into single-object model which was based on the comprehensive benefit considering of economy, society and environment. Finally, the optimal solution of model was obtained by use of linear programming method.Accoding to the actual condition of the city of Wujiang, the existing circumstance and the degree of exploit and utilization of water resources were analyed, and water demand and pollution source were forecasted. In the end, the water resources protection program was studied by the model established, and the optimal water demand quantity and the optimal pollutant discharge were obtained.