Isotope and REE Characterization of Groundwater Aquifers within the Aquifer Storage and Recovery Programme in Sukhothai (N.-Thailand)
Hengsuwan, Manussawee
Yongprawat, Monthon
Simon, Klaus
Hansen, Bent T.
8: 665 - 686
DOI: https://doi.org/10.4236/jwarp.2016.86055
Persistent URL: http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/6685
Persistent URL: http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/6685
Hengsuwan, Manussawee; Yongprawat, Monthon; Simon, Klaus; Hansen, Bent T., 2016: Isotope and REE Characterization of Groundwater Aquifers within the Aquifer Storage and Recovery Programme in Sukhothai (N.-Thailand). In: Journal of Water Resource and Protection, Band 8: 665 - 686, DOI: 10.4236/jwarp.2016.86055.
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Aquifer Storage and Recovery (ASR) was a pilot project for solving flood and drought problem in
the northern part of Chao Phraya River basin, Thailand. This part of Thailand always faces flooding
in rainy season and drought during dry season every year. The overexploitation of groundwater
during dry season leads to continuously decline of water level in this area. In this project, the
excessive surface water during rainy season was stored by injection of this treated surface water
through recharge wells into the underground aquifers. This would serve to raise the water level,
which can be extracted for use during the dry season. To assess the efficiency of the ASR process
some tracers are required. The aim of this study is to prove the suitability of natural tracers to
follow up the artificial recharge process; emphasis will be placed on Strontium (Sr) isotopic composition.
The results showed that the change in 87Sr/86Sr ratios could be observed during an artificial
recharge due to the different isotopic fingerprint of surface water and groundwater. However,
the flow direction of the injected water cannot be clearly interpreted because of the limited number
of monitoring wells, small distance between each monitoring well and the short duration of
injection.
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