内蒙古鄂伦春自治旗地下水水质特征及适用性分析

CHARACTERISTICS AND APPLICABILITY OF GROUNDWATER QUALITY IN OROQEN QI,INNER MONGOLIA

在调查、取样、钻井基础上,充分利用前人成果资料,应用SPSS分析软件、地下水污染分析软件,得到鄂伦春地区区域地质条件、地下水质量、生活饮用水质量、农田灌溉用水质量特征.认为鄂伦春自治旗地下水铁、锰含量受东北地区铁、锰土壤高背景值控制,含量普遍较高,引起地下水色度和浑浊度升高.地下水中As、SO_(4)^(2-)、NH_(4)^(+)、NO_(2)^(-)在不同区域质量浓度值相差较大,受人类活动的影响较大.以农业和工业用水质量要求以及一定水平的人体健康风险为依据,铁、锰、色度、浑浊度、pH值、硫酸根、氟离子含量高,造成部分井位地下水达到Ⅳ类水标准,基本适用于农业和部分工业用水,适当处理后可作生活饮用水使用.在充分认识这一区域地下水质变化规律的基础上,应尽量减少人为因素对地下水造成的污染.

Based on the investigation,sampling and drilling,combined with previous data,the SPSS and groundwater pollution analysis softwares are used to analyze the regional geological conditions,groundwater quality,drinking water quality and farmland irrigation water quality characteristics in Oroqen Qi.It is considered that the groundwater iron and manganese contents in Oroqen Qi is controlled by the high background values of soil iron and manganese in Northeast China,and the generally high contents result in the increase of groundwater chroma and turbidity.Influenced by human activities,the mass concentrations of As,SO_(4)^(2-),NH_(4)^(+)and NO_(2)^(-)in groundwater of different areas vary greatly.According to the agricultural and industrial water quality requirements and certain level of human health risk,high iron,manganese,chroma,turbidity,pH value,sulfate radical and fluoride ion content result in the groundwater in part of well locations reaching the ClassⅣwater standard,basically suitable for agriculture and some industrial water,and used for drinking water after proper treatment.By fully understanding the variation rule of groundwater quality in the region,it is suggested that the pollution of groundwater caused by human factors be reduced as far as possible.