西辽河平原东部浅层地下水污染评价

The Shallow Groundwater Pollution's Assessment of West Liaohe Plains

西辽河平原是我国的重要粮食基地,地下水是其主要供水水源。在工业和生活污染物排放及农业施用化肥农药的影响下,地下水已遭受一定程度的污染。综合分析了地下水污染评价的各种方法后,将单因子污染指数法进行了改进,提出了单指标污染标准指数法。在西辽河平原开展了野外调查,采集了390组地下水样品,每个样品检测79项指标(包括现场测试7项)。依据资料分析选择其中铁、氟、三氮及其有机项目共计34项进行评价。采用单因子污染标准指数法对西辽河平原东部地区地下水污染状况进行了评价。按污染组分的分类对污染范围的分布进行阐述。并分析了导致地下水污染的原因。解决了区域污染评价指标之间对比问题,能够直接反映区域地下水污染情况,并为有针对性地治理地下水污染提供了依据。

West Liaohe River Plains is an important food base in China,and the groundwater is the main resource of water supply.Because of the effect of industrial and domestic pollution and the application of fertilizer and pesticide in agriculture,the groundwater has been polluted to a certain extent.This paper analyzes carious methods of groundwater pollution evaluations,improves the method of single factor pollution,and proposes the single index pollution standard.The author carries out the survey in the west Liaohe Plains,and collects 390 groundwater samples.Every sample is tested 79 indicators （including 7 live tests）.According to the date＇s analysis,we choose 34 items evaluated,such as iron,fluorine,nitrogen and organic projects.This paper uses the single factor pollution index method to evaluate the groundwater pollution of the eastern west Liaohe Plains,and analyzes the causes of groundwater pollution.According to the pollution＇s classification,the author classifies the pollution distribution range,and analyzes the reasons that lead to groundwater pollution.This paper solves the contrast between the evaluation of regional pollution problems,it can directly reflect the regional groundwater pollution,and provides a basis for the management of groundwater pollution.