title: Sudden water pollution accidents and reservoir emergency operations: impact analysis at Danjiangkou Reservoir.
abstract: Danjiangkou Reservoir is the source reservoir of the Middle Route of the South-to-North Water Diversion Project (MRP). Any sudden water pollution accident in the reservoir would threaten the water supply of the MRP. We established a 3-D hydrodynamic and water quality model for the Danjiangkou Reservoir, and proposed scientific suggestions on the prevention and emergency management for sudden water pollution accidents based on simulated results. Simulations were performed on 20 hypothetical pollutant discharge locations and 3 assumed amounts, in order to model the effect of pollutant spreading under different reservoir operation types. The results showed that both the location and mass of pollution affected water quality; however, different reservoir operation types had little effect. Five joint regulation scenarios, which altered the hydrodynamic processes of water conveyance for the Danjiangkou and Taocha dams, were considered for controlling pollution dispersion. The results showed that the spread of a pollutant could be effectively controlled through the joint regulation of the two dams and that the collaborative operation of the Danjiangkou and Taocha dams is critical for ensuring the security of water quality along the MRP.
authors.affiliation: a Institute of Municipal Engineering, College of Civil Engineering and Architecture , Zhejiang University , Hangzhou , People's Republic of China.
authors.forename: Hezhen
authors.initials: H
authors.lastname: Zheng
authors.affiliation: b State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin , China Institute of Water Resources and Hydropower Research , Beijing , People's Republic of China.
authors.forename: Xiaohui
authors.initials: X
authors.lastname: Lei
authors.affiliation: b State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin , China Institute of Water Resources and Hydropower Research , Beijing , People's Republic of China.
authors.forename: Yizi
authors.initials: Y
authors.lastname: Shang
authors.affiliation: c China University of Geosciences (Beijing) , Beijing , People's Republic of China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Duan
authors.affiliation: a Institute of Municipal Engineering, College of Civil Engineering and Architecture , Zhejiang University , Hangzhou , People's Republic of China.
authors.forename: Lingzhong
authors.initials: L
authors.lastname: Kong
authors.affiliation: b State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin , China Institute of Water Resources and Hydropower Research , Beijing , People's Republic of China.
authors.forename: Yunzhong
authors.initials: Y
authors.lastname: Jiang
authors.affiliation: a Institute of Municipal Engineering, College of Civil Engineering and Architecture , Zhejiang University , Hangzhou , People's Republic of China.|b State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin , China Institute of Water Resources and Hydropower Research , Beijing , People's Republic of China.
authors.forename: Hao
authors.initials: H
authors.lastname: Wang
mesh_terms: D000059:Accidents; D002681:China; D004784:Environmental Monitoring; D014874:Water Pollutants, Chemical; D014876:Water Pollution; D060753:Water Quality; D014881:Water Supply
chemical_list: D014874:Water Pollutants, Chemical
keywords: Danjiangkou Reservoir; dam emergency operation; hydrodynamic and water quality model; sudden water pollution accidents