摘要
钱塘江河口是杭州最重要的供水水源,却存在着严重的低氧现象,威胁杭州的供水安全。基于Mike21软件,构建了基于氧平衡的钱塘江河口上游段潮流水质耦合模型。模型不仅可模拟河口的非恒定流、污染物输移特性,还可以模拟DO与BOD、NH_3-N、NO_3-N等物质的生化过程。采用构建的数学模型,定量分析了削减富阳污水量及增大径流量对钱塘江河口BOD_5、DO等水质指标的改善效果及改善程度,据此提出了改善钱塘江河口低氧状况的建议。
The estuary of Qiantang River, a very important water-supply source of Hangzhou City, has a severe hypoxia. In this paper, a coupling flow and water quality model of Qiantang Estuary based on mike 21 is established, which can simulate hydrodynamic and DO responding to BOD, NH3-N and NO3-N. With the help of the model, the water quality variation of Qiantang Estuary responding to sewage quantity of Fuyang City and runoff volume is quantitatively studied, and then suggestions on how to improve hypoxia are put forward.
出处
《中国农村水利水电》
北大核心
2017年第9期86-89,92,共5页
China Rural Water and Hydropower
基金
浙江省重点研发计划项目(2015C03G5050020)
浙江省自然科学基金(LY16D060004)
关键词
溶解氧
水质模型
氧平衡
钱塘江河口
dissolved oxygen
water quality model
oxygen balance
Qiantang estuary
