南北方河流沉积物中污染物含量的对比分析

A Comparative Analysis of Pollutants in the Sediments in Southern and Northern Rivers

以南方河流袁河为例,北方河流太子河为代表,通过对两河流沉积物中氨氮、总氮、总磷和COD的含量监测,分别分析它们的分布规律;当同一水体个别断面沉积物中污染物含量较高时,研究其污染来源;对比两条河流的监测结果发现,太子河沉积物中污染物的含量是袁河的2～5倍,通过分析得出造成南北方河流沉积物中污染物含量差异的主要因素有:温度、水文条件、废污水排放及河流含沙量等。

In this paper,theYuanhe River is taken as an example of the southern rivers,and Taizi River as an example of the northern rivers.Based on the contents of ammonia nitrogen,total nitrogen,total phosphorus and COD in the sediments,the distribution of pollutants in the sediments along the Yuanhe River and the Taizi River are analyzed.When the pollutant contents of individual sections are particularly higher,the pollution sources are studied.Through the contrast of pollutant contents in sediments between theYuanhe River and the Taizi River,the contents of Taizi River are 2~5 times higher than Yuan River.Then the causes are analyzed from temperature,hydrological condition,discharge of industrial and domestic wastewater and sand contents.