摘要
为了查明华县地下水水化学特征,以及地下水的水质情况,采用统计分析法对研究区15个水样点的水化学指标进行较为全面的研究,获得地下水的水化学特征,并选取模糊数学法对其进行水质评价。研究结果表明:研究区地下水基本满足生活饮用水的标准。在各个指标中,pH、HCO3-、Ca2+三项指标的含量相对较稳定,而Cl-、SO42-、K++Na+、Mg2+的变异系数介于30%～100%之间,显示出中等变异性。地下水的水化学类型以HCO3.SO4-Ca.Na+K和HCO3-CI.Mg为主。水质评价结果显示研究区地下水水质总体状况较好,多为Ⅰ类水和Ⅱ类水,可以饮用。通过计算可以看出模糊数学法的计算过程较为麻烦,但其综合考虑了评价因子对水体的污染程度大小,以及水质分级的模糊性,评价结果更加客观、有效、符合实际。
In this study, the hydro-chemical characteristics of groundwater samples from 15 locations in Hua county were analyzed comprehensively. Groundwater qauality were evaluated based on fuzzy mathematical method. The results showed that the various indices meet the need for drinking purpose. The pH and the content of HCO3- ,Caz＋ were relatively stable while the variation coefficient of Cl- ,SO42- ,K＋ ＋Na＋ and Mgz＋ showed moderate variability. Hydro-chemical types are mainly HCO3· SO4-Ca·Na＋K and HCO3-Cl·Mg. Water quality assessment showed that the water has good quality and can be used for drinking. Although cumbersome, the fuzzy mathematical method can be used to achieve more objective, effective and realistic results, considering the evaluation factors on the size of water body pollution and water quality classification of ambiguity.
出处
《南水北调与水利科技》
CAS
CSCD
2011年第6期83-86,149,共5页
South-to-North Water Transfers and Water Science & Technology
关键词
统计分析法
变异系数
地下水
水质评价
模糊数学
水化学特征
statistical analysis
coefficient of variation
groundwater
water quality assessment
fuzzy mathematical method
hydro-chemical characteristics
