자원환경지질 (Economic and Environmental Geology)

  • 제43권1호
  • /
  • Pages.33-42
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  • 2010
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  • 1225-7281(pISSN)
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  • 2288-7962(eISSN)
대한자원환경지질학회 (The Korean Society of Economic and Environmental Geology)
권호 표지

국내 마을상수도 지하수의 라돈 자연저감

Natural Radon Removal Efficiency of Small-scale Water Supply System

  • Cho, Byong-Wook (Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Yun, Uk (Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Choo, Chang-Oh (Department of Earth and Environmental Sciences, Andong National University)
  • 발행 : 2010.02.28
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초록

마을상수도 지하수의 라돈의 자연저감 정도를 파악하기 위하여 6개 지점을 대상으로 지하수공의 제원, 저수조의 크기, 지하수 사용량, 원수로부터 꼭지수까지의 거리를 측정하고 원수와 3개 꼭지수의 라돈함량을 분석하고 비교하였다. 5개 마을상수도 지하수(A-E)에서 2회에 걸친 원수와 꼭지수의 라돈 자연저감은 2006년 11월에는 26.0%, 2006년 12월에는 45.6%로 나타나 계절별 지하수 사용량에 따른 자연저감율에 차이가 있는 것으로 나타났다. 그러나 마을상수도 F에서 2007년 4월 일주일 간격으로 3회 분석된 꼭지수의 라돈함량은 원수의 44.1-49.0%로 나타나 단기간에 걸친 라돈 자연저감에는 큰 변화가 없는 것으로 나타났다. 한편 꼭지수에서의 라돈의 저감은 원수로부터의 거리, 저수조의 크기보다는 지하수의 사용량에 더 영향을 받는 것으로 나타났다.

The purpose of this study was to understand the degree of natural radon removal efficiency of small-scale water supply systems. Six sites were selected for this study, and data on well characteristics (depth, pumping rate, water tank capacity, distance from well to tap water) were obtained. Water samples both from raw water and three tap waters at each site were collected and analyzed for radon concentration. Average radon removal efficiency of the five sites (A-E) in Nov. 2006 was 26.0% while that of the same sites in Dec. 2006 was 45.6% indicating seasonal difference in natural radon removal efficiency. Meanwhile short-term (April 23, April 30, May 8, 2007) radon removal efficiency from the site F was 44.1-49.0%, implying only a little difference in natural radon removal efficiency. The degree of radon removal at tap water was influenced mainly by pumping rate rather than distance from the well and water tank capacity.

키워드

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