唐山市平原区浅层地下水环境特征研究

Shallow Groundwater Environment in Tangshan Plain Area

为了掌握唐山市平原区地下水环境质量特征,对研究区浅层地下水进行了采样分析。研究表明,唐山市平原区地下水水化学类型具有明显的分带性,自北向南,溶解性总固体和总硬度逐渐升高;浅层地下水的总硬度、锰、硝酸盐-氮、溶解性总固体、氟化物、亚硝酸盐和氨氮的质量浓度较高,已超过《生活饮用水卫生标准》;有毒有害重金属中砷和六价铬的问题值得注意。进一步分析发现,唐山市地下水环境质量恶化的主要原因是河流污染、企业排污和农业生产等人类活动影响。

In order to determine the current situation of shallow groundwater environment in Tangshan plain area,samples of shallow groundwater were collected and analyzed.The results showed that hydrochemical type of shallow groundwater in Tangshan plain area has apparent zonation characteristics and the total dissolved solid（TDS）and hardness increase gradually from north to south.The TDS,hardness and concentrations of manganese,nitrate-nitrogen,fluoride,nitrite,and ammonia nitrogen were above those defined in the ＂ National Hygienic Standard of Living Water＂,and more attention should be paid to the toxic and harmful heavy metals,especially arsenic and hexavalent chrome.It suggested that river pollution,industrial pollution,and agricultural production are the main reasons to cause the deterioration of groundwater quality.