Three-dimensional numerical modelling of water quality in Dahuofang Reservoir in China  

作　　者：WANG JinHua SHEN YongMing ZHEN Hong FENG Yu WANG ZaiXing YANG Xu 

机构地区：[1]State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology Dalian 116023, China [2]Liaomng Academy of Envzronmental Sctences, Shenyang 110031, China [3]Dahuofang Reservolr Admtmstratton Bureau, Fushun 113007, China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2011年第7期1328-1341,共14页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Science and Technology Major Special Project of China on Water Pollution Control and Management (Grant No. 2009ZX07528-006-01);the National Natural Science Foundation of China (Grant No. 50839001)

摘　　要：A three-dimensional eutrophication model was applied to assist the management of Dahuofang Reservoir in China.Transport processes were obtained from the three-dimensional,finite volume hydrodynamic model.The hydrodynamic model was verified for a one-year time period in 2006.Our simulation reproduced intra-annual variation of stratification.The simulated variation of vertical thermal structures also matched observations.The water quality model included 8 state variables,including dissolved oxygen,phytoplankton as carbon,carbonaceous biochemical oxygen demand,ammonium nitrogen,nitrate and nitrite nitrogen,ortho-phosphorus,organic nitrogen,and organic phosphorus.Sensitivity of the parameters has been analyzed to decide which process would affect the water quality in the simulation.The water quality verification suggested the model successfully computed the temporal cycles and spatial distributions of key water quality components.The comparison between water quality components before and after the first phase of the water conveyance project suggests that the project has a slight effect on the reservoir ecosystem.The model could be used as a tool to guide physico-biological engineering design or management strategies for Dahuofang Reservoir.A three-dimensional eutrophication model was applied to assist the management of Dahuofang Reservoir in China. Transport processes were obtained from the three-dimensional, finite volume hydrodynamic model. The hydrodynamic model was veri- fied for a one-year time period in 2006. Our simulation reproduced intra-annual variation of stratification. The simulated varia- tion of vertical thermal structures also matched observations. The water quality model included 8 state variables, including dissolved oxygen, phytoplankton as carbon, carbonaceous biochemical oxygen demand, ammonium nitrogen, nitrate and nitrite nitrogen, ortho-phosphorus, organic nitrogen, and organic phosphorus. Sensitivity of the parameters has been analyzed to de- cide which process would affect the water quality in the simulation. The water quality verification suggested the model suc- cessfully computed the temporal cycles and spatial distributions of key water quality components. The comparison between water quality components before and after the first phase of the water conveyance project suggests that the project has a slight effect on the reservoir ecosystem. The model could be used as a tool to guide physico-biological engineering design or man- agement strategies for Dahuofang Reservoir.

关 键 词：Dahuofang Reservoir RESERVOIR water quality HYDRODYNAMIC three-dimensional model 

分 类 号：X524[环境科学与工程—环境工程] TU457[建筑科学—岩土工程]