水源地突发性水污染影响与预警站选址

Impact of sudden water pollution and site selection of early warning station in water source area

采用Delft3D软件建立长江南通河段的二维水动力水质模型,通过河段洪季和枯季的实测水位、流速、流向对模型进行验证,根据模型计算结果,在长青沙和狼山水源地上下游分别确定了2组水质预警监测站位置,在水源地上下游突发污染物质泄露事故时,能够为取水口提供2 h以上预警响应时间。

Delft3D software was used to establish a two-dimensional hydrodynamic water quality model of the Nantong reach of the Yangtze River, and the model was verified by the measured water level, velocity and flow direction in the flood and dry seasons of the river reach. Based on the model results, two groups of warning stations were determined at the upstream and downstream of Changqingsha and Langshan intakes respectively. In the event of a sudden leakage of pollutants in the upstream and downstream of the water source, the water intake can be provided with an early warning response time of more than 2 hours.