Predictive Analysis Of Water Environment In Aha Reservoir

The contaminate of the river or lake or reservoir have been a impatient question all over the world,so that the governing of pollutant,the forecasting of water quality have been the first important thing for every district or every country .While it is the great important source of drinking water and the great important source of industrial water, Aha reservoir in GuiZhou province is the accepted water of the surface stream of rainwater and the livelihood sewage and industrial wastewater.Because of the influence coming from some factor,especially the water qulity's been worsen in aha reservoir increase in ten years,it have threaten on the sureness of people in Gui Yang city in drinking water.There are five river which flow into Aha reservoir ,and in which water flow slowly,and discharge is great,its boundary condition is more complex.Because of these ,in this paper it was analoged for the velocity distribution in aha reservoir by using average deep's momentum equation of two dimension which observe the momentum conservation. According to difference property of pollutant while they are in convective diffusion or transplant and degradation, it have been presented for organics convective diffusion water quality mathematical model equation and heavy metal transplant water quality methematical model equation.Based on the calculation of velocity,by using contaminant load and the programme of pollution presented in the feasibility research ,it was analyzed for the result of concentration of BOD ,COD and Fe befor disposed.By considering the change of discharge of five branch in abundant season and medium season,it have been caculated for different pollutant at abundant season and medium season of different period in the future of ten years.In the end it was forecasted for the concentration of them in the future of 2005,2010.