区域排污对长江口水源地水质影响的数值模拟  

Numerical simulation on influences of regional pollution discharge on water quality of water sources at Yangtze Estuary

作　　者：卢士强[1] 矫吉珍[1] 林卫青[1] 

机构地区：[1]上海市环境科学研究院,上海200233

出　　处：《人民长江》2013年第21期112-116,共5页Yangtze River

基　　金：国家自然基金项目"复杂水动力条件下水体-泥沙-污染物的动态耦合环境效应"(11032007);上海市科委项目"青草沙污染物通量与控制"(062312015)

摘　　要：为了研究长江口区域排污对河口水源地水质的影响,建立了包含长江口、杭州湾在内的平面三维水动力和水质耦合数学模型。利用长江口近年实测水文、水质资料对模型进行全面率定和验证,率定结果同实测资料比较吻合,表明该模型较好地反映了长江口水域流场和水质的特征。利用模型预测分析了典型水文条件下长江口主要污染物浓度的时空分布规律,明确了主要排污源对青草沙水源地和陈行水源地的水质贡献率。依据上述研究结论,提出了保护长江口水源地水质安全的对策措施。A plane 3D coupling model of hydrodynamic and water quality that involves Yangtze Estuary and Hangzhou Bay is established to study the influences of regional pollution discharge into the Yangtze Estuary on water quality of several water sources. The model is calibrated and tested by recent measured hydrological and water quality data, and the calculated results are in good consistency with the measured data, proving that the presented model can reflect the characteristics of flow field and water quality of Yangtze Estuary in a satisfying level. The temporal and spatial distribution law of main pollutants at the estuary under the typical hydrological conditions is studied and forecasted by the model, and the water quality contribution rate from the main pollutants to water sources, i. e Qingcaosha Reservoir and Chenxing Reservoir, are calculated and determined. Protection coun- termeasures for water sources at Yangtze Estuary can be proposed on the foundation of the research results.

关 键 词：水动力模型 水质模型 水源地 水质贡献率 青草沙水库 长江口 

分 类 号：X824[环境科学与工程—环境工程]