察布查尔县地区地下水水化学特征及地下水水质评价

为查明察布查尔县地区的地下水水化学特征及地下水水质情况,选取2016年50组地下水水样测试数据,综合统计分析方法和水化学方法以及模糊综合评价法等方法,对察布查尔县地区地下水水化学特征及地下水水质进行研究。结果表明:察布查尔县地区地下水中Mg~(2+)、Ca~(2+)、HCO~-_3离子含量较高。地下水水样pH为7.55～7.7,均值为7.63,地下水整体呈弱碱性,溶解性总固体(total dissolved solids, TDS)为103.8～1 139 mg/L,均值为254.8 mg/L;地下水水化学类型以HCO_3-Ca(Ca·Mg)和HCO_3·SO_4(SO_4·HCO_3)-Ca(Ca·Mg)型水为主。地下水的水化学特征主要受水岩作用控制,少部分浅埋区受蒸发作用影响,几乎不受大气降水的影响;经F值法和模糊综合评价法对察县地区进行地下水水质评价分析得知,该区域的地下水受污染程度轻,但也存在严重污染区域,在利用水资源的同时也要注意水资源的保护。

Groundwater Hydrochemical Characteristics and Groundwater Quality Evaluation in Qapqal County Area

In order to find out the chemical characteristics of groundwater and groundwater quality in Qapqal County area, 50 groups of groundwater samples were selected in 2016, and the chemical characteristics of groundwater and groundwater quality in Qapqal County area were studied by means of comprehensive statistical analysis method and Hydrochemical method and fuzzy comprehensive evaluation method. The results showed that the content of Mg²⁺, Ca²⁺ and HCO3^-ions in groundwater in Qapqal County area was high. The PH value of groundwater sample is 7.55-7.7, the mean value is 7.63, the whole groundwater is weak alkaline, the TDS value is 103.8-1139mg/L, the mean is 254.8mg/L, and the groundwater hydrochemical type is HCO3-Ca(Ca?Mg) and HCO3?SO4(SO4?HCO3)-Ca(Ca?Mg) is mainly water-based. The hydrochemical characteristics of groundwater are mainly controlled by the action of water rock, and a few shallow buried areas are affected by evaporation, which is almost unaffected by atmospheric precipitation, and the evaluation and analysis of groundwater quality in the county area by F value method and fuzzy comprehensive evaluation method know that the groundwater in this area is less polluted, but there are also serious polluted areas, In the use of water resources at the same time also pay attention to the protection of water resources.