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Lopez-Chicano M., Ouamama M., Vallejos A., Pulido-Bosch.,. Factors which determine the hydrogeochemical behavior of karstic springs: a case study from the Betic Cordilleras, Spain. Applied Geochemistry 2001, 16, 1179-1192.

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Article

Water-Rock Interaction Effect on Evolution of Total Hardness in Groundwater in Urban

1Beijing Key Laboratory of Water Resources & Environmental Engineering, China University of Geosciences (Beijing), Beijing 100083, P.R. China

2Water Chemistry Laboratory, Faculty of Science, University of Lome, BP. 1515, Togo;Faculty of Science and Technology, University of Kara, BP. 404, Togo

3Water Chemistry Laboratory, Faculty of Science, University of Lome, BP. 1515, Togo


American Journal of Water Resources. 2018, Vol. 6 No. 2, 48-52
DOI: 10.12691/ajwr-6-2-1
Copyright © 2018 Science and Education Publishing

Cite this paper:
Seyf-Laye Alfa-Sika Mande, Mingzhu Liu, Ibrahim Tchakala, Honghan Chen. Water-Rock Interaction Effect on Evolution of Total Hardness in Groundwater in Urban. American Journal of Water Resources. 2018; 6(2):48-52. doi: 10.12691/ajwr-6-2-1.

Correspondence to: Seyf-Laye  Alfa-Sika Mande, Beijing Key Laboratory of Water Resources & Environmental Engineering, China University of Geosciences (Beijing), Beijing 100083, P.R. China. Email: seyf08@live.com

Abstract

Groundwater is the most important source of water supply in Beijing city. However, groundwater has undergone intensive total hardness pollution caused by water-rock interaction and by human activities. Analysis of monitoring data of 30 years shows that the high concentration of total hardness is relationship with carbonate mineral dissolution and cation exchange. But speciation calculations of two flow path using the hydrogeochemical modeling code PHREEQC indicated that the annual contribution of carbonate dissolution and cation exchange to concentration of Ca2+ and Mg2+ is less than 1 mg∙L-1, which was far less than that observed. The results illustrated that carbonate mineral dissolution and cation exchange in aquifers play a small role in the contribution of groundwater chemical evolution, and also imply other anthropogenic sources exist indirectly.

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