Application of Modified Streeter-Phelps Model and COD Changing Model to Xiangxi River in Three Gorges Reservoir Area
As an often used physical model with good theoretical and practical values, Streeter--Phelps model has been widely used to research water quality at present. However, in some special water areas the utility of Streeter--Phelps Model suffers limitations because confirming reaeration coefficient often comes from tests in rivers with fast water flow speed rather than considering the wavy effects. Furthermore, in practical research in Xiangxi River in Three Gorges Reservoir Area the changing rule of COD appears abnormity. In some water areas far from pollution source the value of COD changing with time doesn’t accord with exponential attenuation but slightly sways in a certain value. This phenomenon can not be explained by former modified Streeter--Phelps models. After research it indicates that through modifying the reaeration coefficient good calculation results will be obtained. Similarly, the changing rule of COD not only can be made clear but also can provide scientific evidence to further studying rules of pollution ejection and sediment motion.
Hui PENG Wei YAO Ping HUANG
Key Laboratory of Geological Hazards on Three Gorges Reservoir Area, Ministry of Education, China Th College of Civil & Hydroelectric Engineering of China Three Gorges University, Yichang 443002, China
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）