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Origin of groundwater salinity and hydrochemical processes in an unconfined aquifer: case of Yang-Dai River basin in Qinhuangdao (China)
Sun Z. Y.; Song, X. F.; Bu, H. M.; Yang, L. H.; Ma, Y.; Zhang, Y. H.; Han, D. M.
Source PublicationEnvironmental Earth Sciences
2016
Volume75
Issue1
KeywordYang-Dai River basin Groundwater salinity Seawater intrusion Nitrate contamination Anthropogenic pollution coastal aquifers salinization processes seawater intrusion southern france water-intrusion contamination recharge morocco spain area
AbstractGroundwater salinization has become a growing concern in Yang-Dai River basin of Qinhuangdao (China) where groundwater is commonly exploited for domestic, industrial and agricultural uses. In this study, hydrochemical and physical parameters of groundwater were analyzed to identify the origin of groundwater salinity and the geochemical processes occurring in the unconfined aquifer. Groundwater types are Ca center dot Mg-HCO3 center dot SO4 in the hills, Ca center dot Mg-HCO3 center dot SO4 in the piedmont plain and Na-Cl in the coastal alluvial plain, respectively. Electrical conductivity values varied between 322 and 3990 mu S/cm. Chloride concentration attained to 942 mg/L and the proportion of seawater intrusion in the coastal alluvial plain was 5.39 % calculated by seawater fraction formal, displaying the severe seawater intrusion. Cation-exchange reactions and water-rock interactions related to the dilution of halite, gypsum, dolomite and calcite occurred by ionic relationships during seawater intrusion. High nitrate concentrations ranged from 35.6 to 686.5 mg/L distributed in the hills and the south coastal alluvial plain where they are seriously polluted by the industrial wastewater, agricultural fertilizers and domestic sewage. Seawater intrusion and nitrate contamination have common effects on the hydrochemical process in the south coastal alluvial plain. Therefore, the origin of groundwater salinization was attributed not only to seawater intrusion but also to anthropogenic pollution in the study area. This research provides useful information for groundwater salinization and water planning strategies in a coastal area.
Indexed BySCI
Language英语
ISSN1866-6280
DOI10.1007/s12665-015-4825-5
Citation statistics
Document TypeSCI/SSCI论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/43213
Collection历年回溯文献
Recommended Citation
GB/T 7714
Sun Z. Y.,Song, X. F.,Bu, H. M.,et al. Origin of groundwater salinity and hydrochemical processes in an unconfined aquifer: case of Yang-Dai River basin in Qinhuangdao (China). 2016.
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