• Journal of Applied Biological Chemistry
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• 제54권3호
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• pp.225-229
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• 2011

본 연구는 호수바닥에 있는 인의 용출 메카니즘을 규명하고자 유기물이 없는 시료(흙)에 호기성과 혐기성 실험하여 인 용출을 연구하였다. T-P의 증가 대부분은 $PO_4-P$ 증가에서 기인됐고, 약 pH 4-7 정도에서 $PO_4-P$는 호기, 혐기 그리고 pH 변화에도 점진적인 증가를 나타낸 원인은 한번 용출된 $PO_4-P$는 탁도에 흡착되지 않고 용존 하면서 계속해 탁도물질에서 $PO_4-P$를 용출하기 때문이다. T-P, 탁도, pH 그리고 DO의 유사한 변화 양상은 시료의 포도당 분해 시 DO 감소로 혐기화되면 유기산이 생성되어 pH가 감소하고, 탁도물질은 pH 감소로 침전이 촉진되며, 침전된 탁도물질은 미생물의 분해작용이 없어도 인이 용출된다. 이 메카니즘은 호수 바닥으로부터 물로 공급되는 인을 이해할 때 대단히 중요하다.

• 한국환경보건학회지
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• 제44권3호
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• pp.227-237
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• 2018

Objectives: This study was investigated the characteristics of small-scale water works (SWW) in Gyeongnam area and conduct a health risk assessment of water-quality inspection items unfitted for water-quality standards (WQS). Methods: The characteristics of SWW in Gyeongnam province were analyzed using the data of SWW in the last three years (2014~2016) published in National Waterworks Information System. In addition, the health risk assessment for inspection items unfitted for WQS was carried out in four steps: hazard identification, dose-response assessment, exposure assessment, and risk characterization. Results: The total number of SWW in Gyeongnam area was gradually decreased from 2014 to 2016. In addition, drinking water sources of SWW were in the order of ground water, valley water, spring water, surface water, and river-bed water. The number of points unfitted for WQS in SWW by year was 22, 45, and 18 in 2014, 2015, and 2016, respectively, and a total of 112 points were found to unfit for WQS in SWW during 2014~2016. The hazard quotient (HQ) for fluoride, nitrate nitrogen, boron in the unfitted points for WQS was more than 1.0, and the mean values for turbidity and color in points unfitted for WQS were 2.38 nephelometric turbidity unit and 16.25 color unit, respectively. Conclusions: The HQ for fluorine, nitrate nitrogen and boron was more than 1.0 in points unfitted for WQS among SWW in Gyeongnam area, and the turbidity and the color degree exceeded WQS, which mean that there is a possibility of harmful impacts on the human health.