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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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In this paper, the performance of a synthetic fiber filter aimed at high-speed operation and dosed with different coagulants or filter aids was investigated. Without a coagulant, the filter efficiency was about 62% which was greatly enhanced when three types of coagulants namely PAC, Alum, and $FeCl_3$ were used. Among the coagulants tested, PAC was the most effective, giving 91% filter efficiency, followed by Alum with 90%, and $FeCl_3$ with 78%. PAC worked effectively at a very small range of dose, but Alum was relatively effective in a wide range of concentration. Compared with PAC and Alum, $FeCl_3$ provided more or less contant efficiency regardless of its dose but gave the poorest filter efficiency. Moreover, as the inflow turbidity increased, headloss increased and the efficiency decreased at any dose and type of coagulant. The headloss recorded in this particular synthetic fiber filter is not significant as compared to that observed in typical granular filters. The recovery of solids estimated after filter cleaning was about 80% for both PAC and Alum, but poorer at 72% in the case of $FeCl_3$ due to the heavy and large floc characteristics. The recurrence of filter efficiency verified through repetitive filter runs was found to be satisfactory.
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참고문헌 (19)
참고문헌 신청
Bouraoui F / 2004 / Impact of climate change on the water cycle and nutrient losses in a Finnish chtchment / Climatic Change 66:109~126
Carroll T / 2002 / Polyelectrolyte-grafted microfiltration membranes to control fouling by natural organic matter in drinking water / Journal of Membrane Science 203:3~13
Heidi B. Guerra / 2013 / High-speed filtration using a highly porous fiber media for advanced and compact water treatment
Guerra, H. B / 2014 / High-Speed Filtration Using a Highly Porous Fiber Media for Advanced and Compact Particle Removal / Water Science &Technology: Water Supply 14(5):735~742
Horie N / 2016 / High rate filtration process
Carroll T / 2002 / Polyelectrolyte-grafted microfiltration membranes to control fouling by natural organic matter in drinking water / Journal of Membrane Science 203:3~13
Heidi B. Guerra / 2013 / High-speed filtration using a highly porous fiber media for advanced and compact water treatment
Guerra, H. B / 2014 / High-Speed Filtration Using a Highly Porous Fiber Media for Advanced and Compact Particle Removal / Water Science &Technology: Water Supply 14(5):735~742
Horie N / 2016 / High rate filtration process
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