模糊综合评价法在江安河青羊段水质评价中的应用

运用模糊数学综合评价模型对2006年岷江水系江安河青羊区段的水质监测数据进行了综合评价,根据实测资料,选择了7个评价参数:溶解氧、高锰酸盐指数、五日生化需氧量、氨氮、石油类物质、总磷及粪大肠杆菌.评价结果表明,江安河青羊区段的两个断面水质具有明显的季节变化,冬季水质较差.江安河青羊区段入境水质良好,除1、2月外其它月份均是Ⅰ类水;出境水质则明显恶化,12个月全是Ⅴ类水,主要是受到了粪大肠杆菌和总磷的严重污染,构成了这一区段用水安全的重大隐患.评价结果为水污染治理以及控制提供了科学依据.

Application of Fuzzy Mathematical Method in Environmental Quality Evaluation of Qingyang Section in Jiang'an River

The water quality of Jiang'an River was evaluated by fuzzy mathematical comprehensive evaluation model in this paper. The authors selected seven pollution parameters; DO, COD_(MN), BOD_5, ammonia nitrogen, petrolic material, total phosphor and fecalcoliform bacteria. The results showed that the water quality of the two monitoring cross sections of Qingyang section of Jiang'an River had clearly seasonal variations. The surface water quality of Gonggeng village was good in the whole year and met Grade I water quality standard except January and February. However, water quality of Yongkang village deteriorated remarkably and was Grade V water quality standard in the twelve months in 2006. The water of Yongkang village was mainly polluted by fecal coliform bacteria and total phosphor and caused an important security threat. The evaluation results provide a scientific basis for pollution control.