Two-Dimensional Flow-Pollutant Model and Its Application to Shallow Lake in Suzhou City

There are lots of lakes with shallow depth and slow water velocity all over the China. The aquatic environments of these lakes become more and more worse because of the development of urbanization. In order to predict the lake eutrophication, it is necessary to know the pollutants distribution. On the foundation of the 2-D hydrodynamic model, the model on COD(Chemical oxygen demand) and TP (Total phosphorus ) on the field data at every observed station was built. The model calculated the dynamic variance of the hydrodynamics and the water quality of the Jinji Lake . At the same time, the model validated and forecasted the hydrodynamics and the water quality at every control cross section. The results indicated that the calculate results agreed with the field results, which explained the scientific nature and the feasibility of the model. The simulating results show the distribution rules and characteristics of pollutants, these results should be significant to be provided for the hydrodynamic environmental parameters and impact evaluation of water quality.