J4 ›› 2012, Vol. 42 ›› Issue (5): 1404-1409.

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Experiment on Impact of Groundwater Quality During Artificial Recharge Process

Lin Xue-yu1,2,Zhang Wen-jing1,2,He Hai-yang1,2,Shi Xu-fei1,2,Wang han-mei3,4,5,Jiao Xun3,4,5   

  1. 1.College of Environment and Resources, Jilin University, Changchun130021, China;
    2.Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University,Changchun130021, China;
    3.Institute of Geological Survey, Shanghai200072, China;
    4.Land Subsidence Control Engineering Research Center, Shanghai200072, China;
    5.Key Laboratory of Land Subsidence Monitoring and Prevention, Ministry of Land and Resources,Shanghai200072, China
  • Received:2012-03-20 Online:2012-09-26 Published:2012-09-26

Abstract:

As a result of the water-rock interaction mechanism in artificial recharge process is more complex, the evaluation on influence of groundwater quality during the artificial recharge process is scarce. The authors discuss the trends of solute component and their associated water-rock interaction during the artificial recharge process based on pilot scale experiments conducted in the laboratory. Experiment results showed that:in the groundwater recharge process, the ion composition of groundwater were mainly affected by the mixing, cations exchange adsorption and aquifer mineral phase (calcite, dolomite, potassium feldspar) dissolution. Due to the influence of underground anaerobic environment developing to the aerobic environment in the artificial recharge process, the elements of As, Cr, Fe in porous media has dissolved out. Besides, the As-Fe element variation showed well correlation. Along with the increase of artificial recharge time, the effect range of groundwater quality was increased. And the chemical type of groundwater was changed from the initial Cl-HCO3-Na to Cl-HCO3-Na-Ca gradually during the recharge process.

Key words: artificial recharge, groundwater, laboratory experiment, water-rock interaction mechanism

CLC Number: 

  • P641.1
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