河流水质模型在双流县流域治理中的应用

Application of River Water Quality Model for Watershed Management in Shuangliu County

研究利用现有的河流水质模型,构建了一个可实时模拟河流水环境质量变化状况的动态模型。模型采用一维稳态单组分水质模型对河流的CODCr、NH3-N的降解进行计算,采用多宾斯-坎普稳态模型对河流的BOD、DO变化情况进行计算。模型引入水文数据、水质监测数据、环境统计数据、社会统计公报数据,以Excel作为数据平台,可以反演出河流不同月份、不同区段的污染物降解系数。研究将该模型应用于双流县的流域治理,以在锦江双流段的应用为例进行了具体说明。根据2008年双流县河流的相关数据,研究使用该模型反演出了锦江双流段的污染物降解系数,并对其反映的流域污染状况进行了分析。随后,研究使用该模型已计算出的岷江中段河流的降解系数,模拟计算了4种情景下锦江双流段出境断面的可能水质变化,以验证拟定的双流县流域治理方案的预期效果。模型具有实用性和进一步扩展的功能。

Using a river water quality model,a real-time dynamic model simulating the changing process of river water quality was developed.In the model,the degradation of CODCr and NH3-N in the river water were calculated by applying one-dimensional steady state single component water quality model for,and the BOD,DO changes were calculated by applying Dobbins-Camp steady-state model.By inporting data including hydrological data,water-quality monitoring data,environment statistic data and data from social statistic bulletin the degradation coefficient of pollutants in different months as well as in different ranges could be calculated using excel.The model is applied for the watershed management of sections of Jinjiang River in Shuangliu County by using the data concerned in 2008,at where the degradation coefficient of pollutants was calculated and the pollution status was analyzed.The calculated degradation coefficient for mid-section of Minjiang River was used to simulate the possible water quality at the exit section of Shuangliu County in four different situations to confirm the predicted effects..The model is practical and extensible.