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http://dx.doi.org/10.9720/kseg.2019.1.037

Characteristics of Radon Reduction of Small-scale Water Supply System  

Cho, Byong-Wook (Groundwater and Ecohydrology Research Center, Korea Institute of Geoscience and Mineral Resources)
Publication Information
The Journal of Engineering Geology / v.29, no.1, 2019 , pp. 37-50 More about this Journal
Abstract
It is possible that radon removal in groundwater of small-scale water supply system (SWSS) is caused by atmospheric storage and aeration facilities installed in the water tank. Radon removal rates at water tank and tap of the 32 SWSS during summer season ranged from -69.3% to 62.7% (average 25.7%) and from -64.3% to 83.1% (average 30.3%) while those of 16 SWSS during autumn season ranged from 21.3% to 78.0% (average 42.8%) and from 17.7% to 66.9% (average 44.8%). The reason of higher radon removal rate in the autumn season compared with the summer season is due to higher atmospheric storage effect by lower groundwater use rate. The radon removal rates at the water tank from 12 SWSS were 47.4~94.0% (average 78.9%), in which the removal rates at the atmospheric storage are also included. Atmospheric storage and aeration can be used to reduce radon concentration in SWSS groundwater. For more efficient use of radon reduction, further studies are necessary to assess the radon removal rate considering variation conditions of radon concentration in groundwater, size and forms of water tank, change in groundwater usage rate, aeration capacity and ventilation facilities.
Keywords
Small-scale water supply system; radon concentration; removal rate; atmospheric storage; aeration;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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