滨州地区浅层地下水持久性有机污染特征分析

地下水是重要的水资源,地下水的有机污染已引起了包括中国在内的许多国家的重视。该文通过对山东省滨州市浅层地下水污染调查,在获取大量第一手资料的基础上对滨州市浅层地下水持久性有机污染特征进行了分析,对浅层地下水中有机污染物的来源、污染途径、分布规律等进行了研究。研究结果表明,滨州地区浅层地下水已遭受有机物污染,有机物检出项目较多,共有20种,主要为卤代烃类和单环芳烃类,但总体浓度均较低,仅有3种有机指标超标,主要分布在工业园区、化工厂及皮革城附近。滨州地区有机污染物的来源主要为工业厂家"三废"的不合理排放和处置,导致流经污染源附近的地表水体受到不同程度的有机污染,而这些受污染水体又通过不同方式如污灌等进入不同地段的土壤,以垂向入渗形式进入并污染到浅层地下水。典型地段和污染源附近,有机指标检出率和超标率明显高于其他区域。

Analysis on the Characteristics of Persistent Organic Pollution in Shallow Groundwater in Binzhou Area

Groundwater is an important water resource. Organic pollution of groundwater has attracted the attention of many countries including China. Through investigation of shallow groundwater pollution, on the basis of a large number of firsthand data, the characteristics of persistent organic pollution of shallow groundwater in Binzhou city have been analyzed . The sources, pollution pathways and distribution of organic pollutants in shallow groundwater have been studied as well. It is showed that shallow groundwater in Binzhou area has been polluted by organic pollutants. There are 20 kinds of organic pollutants detected, they are mainly halogenated hydrocarbons and monocyclic aromatic hydrocarbons. However, the concentration of organic pollutants in the shallow groundwater is relatively low. Only three kinds of organic pollutants exceed the standard which mainly distributed in industrial parks, chemical plants and near leather cities. The source of organic pollutants in Binzhou area is mainly caused by the irrational discharge and disposal of the "three wastes" by industrial factories, which leads to the organic pollution of surface water flowing through the polluted sources to varying degrees, and the polluted water enters the soil of different areas by different ways, such as sewage irrigation, so as to infiltrate vertically. It enters and pollutes shallow groundwater. The detection rate and exceeding standard rate of organic indicators near typical areas and pollution sources are significantly higher than other regions.