Estimation of eco-environmental water use in Honghu lake based on water quality models

In this paper,eco-environmental water use for Honghu Lake is studyed from the ecological water dispatching point of view.This paper calculated volume of eco-environmental water use with water quality models based on mass conservation principle.The result is that eco-environmental water use of Honghu Lake is 23.2×108m3/a when the TN concentration meets Ⅲ Class Environmental Quality Standard for Surface Water,based on the assumption that total imported pollutants keeps constant.