Overview
The numerical source-apportionment model is an efficient and useful method for analyzing water-quality responses to nutrient loading in rivers and lakes. In this study, the Environmental Fluid Dynamic Code (EFDC) and a numerical source-apportionment model were applied to Lake Bali in Jiujiang City, China, to predict the contributions of various pollution sources to the lake at any time and position.
Model Setup
The model was calibrated and validated by comparing its predictions with observed hydrodynamic and water-quality parameters from 2014 to 2015.
Key Findings
Application of the calibrated model to simulate water-quality responses to a pollution source showed that the contribution of a pollution source to water quality in the lake has strong spatial heterogeneity. The results provide useful information for the optimization of pollution load reduction in Lake Bali and can be used to determine the most effective implementation of its pollution-control plan. The model is also transferable to source-apportionment analysis in other urban lakes and is superior to traditional source-apportionment models.