Study on environmental impact of pollutant dispersion from Yangtze River to Zhoushan sea area

2019 5th International Conference on Energy Materials and Environment Engineering

能源学;生态环境科学

Zhang, G.Z.^1^2^3 ; Mu, J.B.^1^2^3 ; Hou, S.H.^1^2^3

Zhejiang Institute of Hydraulics and Estuary, Hangzhou, China^1

Zhejiang Institute of Marine Planning and Design, Hangzhou, China^2

Zhejiang Provincial Key Laboratory of Estuary and Coast, Hangzhou, China^3

关键词: Diffusion paths;    Hangzhou Bay;    Low background;    Pollutant dispersions;    Sea areas;    Transport and diffusions;    Yangtze Estuary;    Yangtze River;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/295/2/012082/pdf
DOI  :  10.1088/1755-1315/295/2/012082

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The pollutants from the Yangtze River will diffuse along the coastal zones with the action of the current. However, whether they will reach Zhoushan city or not and the impact, diffusion path of the pollutants from the Yangtze River is not clear. At present, there are few studies on the large-scale diffusion of pollutants from the Yangtze River into the sea. In this study, the transport and diffusion of chemical oxygen demand (COD) from the Yangtze River to Zhoushan sea area were studied by numerical simulation. The results showed that the diffusion of pollutants from the Yangtze River could reach Zhoushan. Both Hangzhou Bay and Zhoushan Island were greatly affected, resulting in an increase of COD concentration of 0.5-0.8 mg/L in most of Zhoushan sea areas. Because of the low background concentration of COD in Zhoushan, the percentage of COD increment caused by pollution in the Yangtze Estuary was more than 50%.