Characteristics of Hydrogeochemistry and Groundwater Quality in a Riverbank Filtration Site, Northeastern China

2020 ◽  
Author(s):  
Yanguo Teng ◽  
Yuanzheng Zhai ◽  
Haiyang Chen ◽  
Ruihui Chen
Keyword(s):  
Spatial Distribution ◽  
Groundwater Quality ◽  
Land Surface ◽  
Evaluation Method ◽  
Major Ions ◽  
Comprehensive Evaluation ◽  
Shallow Groundwater ◽  
Distribution Patterns ◽  
Total Hardness ◽  
Spatial Distribution Patterns

<p>Studies on hydrogeochemical characteristics and an assessment of the groundwater quality for drinking purposes were conducted in and around the riverside source field of Wuchang, Northeast China. Twenty-seven and twenty-three shallow groundwater samples were collected for measuring on-site parameters and major components in the years 2000 and 2014, respectively. In 2014, the average concentrations of major ions of shallow groundwater were found to be in the following order: Ca<sup>2+</sup>> Na<sup>+</sup>> Mg<sup>2+</sup>> K<sup>+</sup> for cations and HCO<sub>3</sub><sup>-</sup>> SO<sub>4</sub><sup>2-</sup>> Cl<sup>-</sup>> NO<sub>3</sub><sup>-</sup> for anions. The spatial distribution patterns of K<sup>+</sup> and NO<sub>3</sub><sup>-</sup> had no obvious regularity, whereas Cl<sup>-</sup> and Na<sup>+ </sup>showed similar spatial distribution patterns. Ca-HCO<sub>3</sub> and mixed type water were the dominant hydrochemical types. The analysis of the SI values for minerals and the Gibbs plot illustrated that the concentrations of major components were mainly controlled by rock weathering, such as the dissolution of calcite, dolomite, halite, gypsum and aragonite, followed by ion exchange. Indicators, such as Total hardness (TH), Total Dissolved Solids (TDS), Cl<sup>-</sup>, SO<sub>4</sub><sup>2- </sup>and NO<sub>3</sub><sup>-</sup>, were selected to assess the groundwater quality using a comprehensive evaluation method of dividing the groundwater quality into five classes: excellent, good, fair, poor and very poor water. The results showed that 7.4% and 34.8% of the total groundwater sample in 2000 and 2014, respectively, were unsuitable for drinking use, indicating that the shallow groundwater quality has gradually worsened in the past few decades. The concentration of NO<sub>3</sub><sup>- </sup>was a major factor that influenced the observed groundwater quality changes.</p><p><strong>Acknowledgments </strong></p><p>This study was supported by the NSFC (No.41877355), Beijing Advanced Innovation Program for Land Surface Science, and the 111 Project of China (B18006).</p>

Application of Fuzzy Comprehensive Evaluation Method in Groundwater Quality Assessment in Handan City

2010 ◽  
Vol 113-116 ◽  
pp. 1275-1279
Author(s):  
Xue Jiang ◽  
Chang Lai Xiao ◽  
Xiu Juan Liang ◽  
Meng Yao Xu
Keyword(s):  
Groundwater Quality ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Ammonia Nitrogen ◽  
Total Hardness ◽  
Volatile Phenols ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method ◽  
Handan City

The fuzzy comprehensive evaluation method was applied to evaluation of groundwater quality .According to the measured data, the Brewery, Small North Castle and Weft Plant in the southeast of Handan were selected as the sampling points. Then with the actual situation, 13 kinds of evaluation factors including pH, total hardness, sulfate, chloride, volatile phenols, nitrate, nitrite, ammonia nitrogen, fluoride, cyanide, Hg, As, Cr (hexa-valend) were chosen to evaluate groundwater quality. From the aspects of weight and fuzzy matrix computing, the whole process of application of fuzzy comprehensive evaluation method was introduced into groundwater quality evaluation in this paper.

Evaluation and Prediction of Karst Groundwater Quality in Taiyuan Lancun Spring Area

2015 ◽  
Vol 1092-1093 ◽  
pp. 1145-1149
Author(s):  
Yan Li ◽  
Yong Bo Zhang
Keyword(s):  
Groundwater Quality ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Total Hardness ◽  
Karst Water ◽  
Karst Groundwater ◽  
Industrial Enterprises ◽  
Increasing Trend ◽  
Spring Area

In this paper, on the basis of the research on karst groundwater chemistry characteristics of Lancun spring area, fuzzy comprehensive evaluation method is applied to evaluate the groundwater quality of Lancun spring area, and correlation analysis to predict the trend of groundwater quality. The results show that karst water of Lancun spring area is clean in general, which reached grade I. But in some area where industrial enterprises and towns residents are concentrated, items such as nitrate nitrogen content are relatively high. By 2025, the total hardness and Cl- content of karst water in the majority area of the basin change little, but in several area the total hardness and Cl- content show an increasing trend, but not excessive. Other regions show an increasing trend, but not exceeding standards of drinking water.

scholarly journals The hydrochemical characteristics and quality assessment of groundwater in Shuangliao City, China

2019 ◽  
Vol 98 ◽  
pp. 01034 ◽  
Author(s):  
Mingjun Liu ◽  
Changlai Xiao ◽  
Xiujuan Liang
Keyword(s):  
Groundwater Quality ◽  
Human Activities ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Hydrochemical Characteristics ◽  
Analytic Hierarchy ◽  
Liaohe River ◽  
Geological Conditions ◽  
Type Water

In this study, a hydrochemical investigation was conducted in Shuangliao city to identify the hydrochemical characteristics and the quality of groundwater using descriptive statistics and correlation matrices. And on that basis, combined with Analytic hierarchy process (AHP), an improved two-level fuzzy comprehensive evaluation method is used to evaluate the groundwater quality. The results indicate that the major cations and anions in groundwater are Ca2+ and HCO3-, respectively. The chemical types are mainly HCO3—Ca type water, some areas are complicated due to the influence of human activities. The evaluation results show that the water quality in the area is mostly III type water, and the groundwater quality in some areas is IV or V water due to the influence of primary geological conditions or human activities. The groundwater quality in the East Liaohe River Valley and Shuangliao urban area is relatively poor, and in the northwest part which is the saline alkali soil area is also relatively poor.

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