Hydro-chemical characteristics and water quality evaluation of groundwater in Suqian City
In order to study the hydro-chemical characteristics and water quality status of groundwater in Suqian City,based on 77 groups of water sample data,hydro-chemical characteristics and genesis of groundwater at different aquifer in Suqian City were analyzed by classical statistics,Piper diagram,correlation analyses,Gibbs diagram,ion ratio and chloro alkaline indices method,and water quality was evaluated. The results of hydro-chemical analyses showed that groundwater in the study area was weakly alkaline,the main cation were Ca2+and Na+,and the main anion was HCO3-. The main hydro-chemical type of phreatic water was HCO3·Cl-Na·Ca·Mg type,The main hydro-chemical types of the first confined groundwater were HCO3-Ca·Mg and HCO3-Na·Ca·Mg type,The main hydro-chemical types of the second and third confined groundwater was HCO3-Ca·Na type. Hydro-chemical components were mainly affected by rock weathering,and the main ions were derived from the weathering and dissolution of carbonate,silicate and evaporative salt rock,and were affected by cation exchange and anti-cation exchange. The results of groundwater quality assessment showed that the second and third confined groundwater was better than that of the phreatic water and the first confined groundwater. The phreatic water quality was mainly Class IV water,and the groundwater quality of other aquifers were mainly Class III water. The main chemical components affecting groundwater quality were I-,TH and Fe.
groundwaterhydro-chemical characteristicswater quality evaluationSuqian City
万方数据
维普
