Study On Surface Water Environmental Capacity And Quantity Control Of Pollution Within Tidal River Network

It is easy to be influenced by tidal influence and flood because of the gathering lakes and rivers and low topography in tideway area. With the growing economy and society, water pollution and decline of water environment quality has become a very important topic with regard to sustainable development. If we want to improve the quality of water environment,we must study the water environmental capacity(WEC) ,and then control the pollutions discharged total according to the WEC.Combining water dynamic model and WEC model, this paper constructed computing method of WEC in tideway area in plain, applied it in Baoshan in Shanghai, counted the WEC satisfying the water quality goal, put forward the control quantity and quantity to be cut. According to the study course of this paper, several results were obtained as follows:1. It validated the water dynamic model in large-scale river network using the latest information and the results were proved to be appropriate.2. It calculated the surface WEC in river network based on the water dynamic model and WEC model and the characteristics of pollution sources ejection. The results indicated that the method is effective and convenient for computing the water environment capacity and pollution quantity.