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Evaluation of the qualities of rainwater collected from the top of vinyl house : A Case Study in Jeju Island  

Lee, Bong-Joo (한국지질자원연구원)
Moon, Sang-Ho (한국지질자원연구원)
Kim, Yong-Cheol (한국지질자원연구원)
Kim, Gee-Pyo (제주특별자치도 환경자원연구원)
Kang, Bong-Rae (제주특별자치도 환경자원연구원)
Koh, Gi-Won (제주특별자치도 환경자원연구원)
Park, Ki-Hwa (한국지질자원연구원)
Publication Information
Journal of Korean Society of Water and Wastewater / v.22, no.3, 2008 , pp. 315-322 More about this Journal
Abstract
Recently there has been a great deal of interest in promotion of the utilization of rainwater. In this paper, we compared qualities of the rainwater collected from the top of vinyl houses to those of precipitated rainwater itself in Jeju Island. The pH of the collected rainwater was acidic and lower than the precipitated one. As a storm progresses, the pH of the collected water gradually increases. Ranges of EC of the precipitated and collected rainwater were 1-118 and $1-475{\mu}S/cm$. Most of Cl and turbidity values of the collected rainwater were less than 20 mg/L and 20 NTU, while those of the precipitated rainwater were less than 10 mg/L and 5 NTU. Differences in qualities between precipitated and collected rainwater indicate that qualities of the collected rainwater should be changed by the first flush effects, and imply that long term continuous monitoring for the qualities of collected rainwater is essential to quantify the first flush phenomenon more accurately.
Keywords
rainwater; water qualities; artificial recharge; groundwater;
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