黄河河口段水-沙-芳烃类污染物相互作用的数值研究  

Numerical model for interaction between sediment and aromatic hydrocarbons in the Yellow River estuary area

作　　者：李玲[1] 王薇宇[1] 

机构地区：[1]清华大学水沙科学与水利水电工程国家重点实验室,北京100084

出　　处：《水利学报》2013年第9期1087-1092,共6页Journal of Hydraulic Engineering

基　　金：国家自然科学基金项目(51079071,51039002);水沙科学与水利水电工程国家重点实验室科研课题资助(2013-KY-3);国家水体污染控制与治理科技重大专项(2012ZX07201002-4)

摘　　要：考虑复合污染条件下泥沙吸附污染物和泥沙冲淤运动对污染物输移扩散特性的影响,建立了非恒定非饱和输沙模型和污染物迁移转化模型,并结合黄河河口段利津至清7河段监测数据,研究该河段水流、泥沙过程及污染物迁移转化规律,分析了多组份共存的复合污染条件下苯酚、苯胺及氯苯之间的吸附竞争关系及其浓度变化情况。研究结果表明,从上游到下游先冲刷后淤积的河段中,溶解态污染物浓度值沿程降低,吸附态污染物浓度值沿程升高。三组分复合体系下各污染物之间存在竞争吸附,吸附态苯胺浓度值升高而溶解态浓度值降低,苯酚和氯苯在泥沙上的吸附作用受到抑制,吸附态浓度值有所下降,溶解态浓度值略有升高。The influence of the pollutants adsorption and sediment motion on the pollutants transfer charac- teristics was studied in this paper. Unsteady-unsaturated sediment motion and water quality model were es- tablished based on the characteristics of aromatic hydrocarbons in the Yellow River from Lijin to Qing7 sec- tion, and the transport and transformation of the aromatic hydrocarbons, especially the adsorption competi- tion of the combined pollutants, were discussed. The calculated results show that the erosion happens in the upper river and the deposition appears in the lower river, the concentration of soluble pollutants de- creases along the river, especially when the quantity of the runoff and sediment is very large. The absorb- able pollutants concentration distribution is of the other way round. Compared to the single pollutant, ad- sorption competition, occurs among the combined pollutants.

关 键 词：复合污染 迁移转化 水质模型 芳烃类污染物 黄河 

分 类 号：X143[环境科学与工程—环境科学]