摘要
本文在外高桥顺岸码头工程水环境现状评价的基础上,采用沿水深积分平均的二维水流水质数学模型,结合一定的定解条件,建立了预测该项工程对周围水环境影响的水质数学模型。采用ADI数值计算方法离散控制方程,考虑到顺岸码头下游3km的上海合流污水竹园排放口工程,预测计算工程建成后产生的污染源对评价区水域的水质影响。计算时,主要讨论了化学耗氧量(COD_(Mn))的浓度增量。本模型也可以推广应用于其他河口、海岸流场和浓度场的计算预测研究。
Based on the evaluation of the recent water environment state of the Waigaoqiao quay, the mathematical model of water quality combined with a certain fixed conditions of solution for predicting the effect of this project on its water area was established by adopting 2—D flowing water quality mathematical model taking integral average along water depth. Taking account of the Shanghai Zhuyuan sewage discharge project downstream 8 km away from the quay, the effect of pollution origins on the water quality of evaluated area after the project completed was predicted by adopting ADI numerical method for discrete controlling equations. In the calculation the increment of oxygen consumption concentration (COD_(Mn)) was discussed. This model can also be applied to the prediction study on the flow field and concentration field of other estuaries and coasts.
关键词
数学模型
水环境
评价
水质预测
Mathematical model
water environment evaluation
water quality prediction
flow field
oxygen consumption
