The Study On The Procution Of Solid Waste Landfill Leachate

With the rapid development of China's economic level and the acceleration of urbanization, urban solid waste production is increasing. At present, sanitary landfill is the main method to treat the municipal solid waste in our country. After conducting waste landfill, leachate may produce secondary pollution on the environment. The estimation of leachate production is an important indicator of designing landfill, and is also an effective way to control and dispose the leachate. Therefore, it has very important practial significance to study the forecast of the municipal solid waste landfill leachate production.In this paper, through combining the theoretical analysis and the mathematical method and studying the Chengdu Changan landfill, we analyze the main source of landfill leachate and the main reason of the leachate production. By using the random mathematical theory, we bulid landfill leachate production prediction models, which need little parameters and are easy to define the parameters. They contain linear regression model, gray prediction model, BP neural network prediction model, and linear combination forecast model.The results show that the MSW landfill leachate production prediction model under the random mathematical is feasible. In addition, by comparing the results of all the model, it is easy to konw that because the linear combination prediction model combines the prediction results, the results of the linear combination prediction model has the most forecast accurate. It increase the reliability of the forecast results.