基于EFDC和WASP耦合模型的长江嘉陵江重庆主城段水质情景分析.pdf

1 基于 EFDC 和 WASP 耦合模型的长江—嘉陵江重庆主城段水质情景分析何强,李家杰,黄莉(重庆大学三峡库区生态环境教育部重点实验室, 重庆) 摘要: 调查长江—嘉陵江重庆主城段水文、地形等资料,结合重庆主城区点源、面源污染特性,基于 EFDC ( Environmental Fluid Dynamics Code )和 WASP ( Water Quality Analysis Simulation Program )模型耦合,建立了长江—嘉陵江重庆主城段二维水环境模型;采用实测数据率定模型参数,模拟了四种情景下两江的水力水质的二维分布变化情况;分析了实施不同点源、非点源管理措施后对城市水体水质改善的综合效应。结果表明,削减 50% 的面源污染负荷和污水处理厂提标两种方案都能在一定程度上改善现有的水质状况,强化非点源管理能较好的降低有机污染物浓度,降低点源排放强度对氮的控制效果较明显,因此重庆主城污染负荷削减方案应根据三峡水库水质保护目标制定。关键词: 长江;嘉陵江;情景分析;模型 Scenarios Analysis of Yangtze and Jialing River in Chongqing Urban Core Based on EFDC and WASP Model Li Jiajie, Huan Li (Key Laboratory of the Three Gorges Reservoir Region ' s Eco-Environment, Ministry of Education, Chongqing ) Abstract: Based on EFDC (Environmental Fluid Dynamics Code) and WASP (Water Quality Analysis Simulation Program), combined with the characteristics of PS (point source pollution) and NPS (non-point source pollution) in urban core of C hongqing, a 2D hydrodynamic and wate r quality model was developed in the river of Yangtze and Jialing after investigations of information such as hydrology, terrain and so on. After model calibration and validation, four pollution scenarios which included different measures with PS and NPS were analyzed. With the aid of EFDC-WASP simulation model, it shows that reduce 50% NPS load or effluent concentration of WWTPs could improve the water quality. Strengthening the NPS managemen