One of the methods to control the concentration of pollutants of Lake Donghu put forth in this paper is diverting Changjiang River to quicken its water replacement. With balancing total phosphorus and nitrogen of the Lake and analysing the effects of sewage treatment, diverting project was shown nesessary. Three possible diverting schemes were presented. The diverting way as 'discharging before diverting' was clearly displayed to gain an advantage over 'discharging while diverting' by simulating their mixing mechanisms. To the former, based on mass balance, and considering the shape of the Lak...
