辽西地区地下水水质污染评价及趋势分析

Evaluation and Trend Analysis of Groundwater Quality in Western Liaoning Province

依据辽宁西部的锦州、阜新、盘锦、朝阳、葫芦岛地区2006-2010年间地下水水质检测结果,采用地下水水质综合污染指数评价方法,与污染起始值相比较,认为超过污染起始值即为受到了污染。辽西地区地下水水质污染评价结果表明,地下水未污染范围逐年增加,大部分水质点处于极轻微污染—中度污染状态,重度—严重污染的水质点逐年变化不大且略有减少。地下水水质综合变化趋势分析结果表明,辽西地区各年均以地下水水质稳定占主导趋势,地下水水质变差趋势明显减弱,地下水水质总体趋于稳定,并且地下水水质逐年向好的方向转化。

Based on the groundwater quality testing results from 2006 to 2010 in Jinzhou, Fuxin, Panjin, Chaoyang and Huludao of Western Liaoning Province, as well as groundwater quality comprehensive pollution index assessment method, the testing results were compared with the pollution initial values, and the values in excess of initial values can be considered that groundwater was polluted. The pollution evaluation results of groundwater in Western Liaoning Province show that the degree of unpollution slightly increases year by year, in each year the extremely slight pollution, slight pollution and moderate pollution are dominant, slightly heavy pollution and heavy pollution reduces year by year. Groundwater quality comprehensive trend analysis results show that generally the quality of groundwater in the Western Liaoning Province is stable, the worsening trend of groundwater quality weakens obviously, overall groundwater quality tend to be stable and groundwater quality is turning better year by year.