水质距离法在地表水水质评价中的应用

水质距离评价法是水质综合评价方法的一种,它将水质评价问题转化成度量空间中各点之间相对距离的问题,原理简单,评价结果精确.本文采用该方法对潭江干流三个断面和全河段水质进行综合分析评价,结果表明,潭江干流总体水质较好,符合国家地面水Ⅱ类水标准,但部分监测断面处溶解氧、氨氮、总磷等超标.

Application of Distance Evaluation Method of Water Quality in Evaluation of Surface Water Quality for Tanjiang River

The distance evaluation method of water quality is a kind of synthetic evaluation methods of water quality.The question of evaluation of water quality is turned into the question of relative distances among different points in measurement space.Therefore its principle is simple and the result of evaluation is accurate.In this paper,the authors carried out the synthetic analysis and evaluation of water quality for three sections and the overall course in master stream of Tanjiang River by the method.The result shows that the water quality is fairly good of the master stream of Tanjiang River overall and it is up to the state standard for the second kind of surface water.But at some monitored sections,the dissolved oxygen,the ammonia and nitrogen,and the total phosphorus surpass the standard.