荆门市地下水水质的归类分析及水质质量指数综合评价

目的：了解荆门市地下水水质特点。方法：将两年来采集的150份地下水的监测数据进行模糊归类分析，计算出各类型的水质质量指数，来进行综合评价和比较。结果：荆门市地下水归为3类。其WQI依次为0．37、3．89和0．99。Ⅰ类：1、3、4、5、6为碳酸盐类地下水。Ⅱ类：2，含铁锰地下水。Ⅲ类：7，为高盐类地下水。结论：3类地下水中，Ⅰ类为良好的生活饮用水源；Ⅱ类虽WQI值最高，但其经除铁处理后仍可饮用；Ⅲ类地下水难以净化处理，不宜作为饮用水源。

The classification and analysis of groundwater in Jingmen ＆ the comprehensive evaluation of the water quality index (WQI)

Objective:To understand the characteristic of the groundwater in Jingmen.Methods:150 monitoring data of the groundwater collected in recent two years were classifed and analyzed in a fuzzy way.The quality index of various types of water was calculated to evaluate and compare them.Results:The groundwater of our city was divided into three types by adopting the fuzzy classificatory and analytic method.Their WQI was as follows: 0.37, 3.89 and 0.99.Type I: 1,3,4,5 and 6 were carbolic salty groundwater.Type II: 2 contains iron and manganese.Type III: 7 was highly salty groundwater.Conclusion:Type I is quite suitable for drinking; Type II, with the highest WQI, is nevertheless used as drinking water after the elimination of iron from it;Type III: difficult to purify,is not suitable for drinking.