지원사업
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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초록· 키워드
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This study is carried out to get the basic design parameters for phospate removal facilites from wastewater by Tobermolite. The phosphate removal by the apatite formation on the surface was affected by several important factors, temperature, ions present in wastewater stream, contact time, recirculation rate, and etc. In case of the temperature, with the increase of temperature, the apatite formation was accelerated. When temperature increased from $15^{\circ}C$ to $35^{\circ}C$, removal efficiency of phosphate increased from 83 % to 93 %. An increase of calcium and fluoride ion content increase the apatite formation, however, bicarbonate and magnesium ion inhibited the crystallization of apatite. As expected, when the recirculation rate was increased from 1 Q to 3 Q, at EBCT (Empty Bed Contact Time) 60min enhanced removal efficiency was observed. The more the recirculation rate increased, the more the removal efficiency increased. According to the results of column experiment using an actual wastewater with low and high phosphate concentration (5 mg/L and 50 mg/L-P), the removal efficiency was 77 % at EBCT of 45 min, and 80 % at 60 min. It was suggested that optimum EBCT was 45 min.
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참고문헌 (18)
참고문헌 신청
Bachra, B. N. / 1968 / Precipitation of Calcium Carbonate and Phosphates. I. Spontaneous precipitation of calcium carbonates and phosphates under physiological conditions / Arch. Biochem. Biophys. 103:124~138
Brown, J. L. / 1978 / Precipitation of Calcium Orthophosphate at Slightly Alkaline pH
Brown, J. L. / 1981 / Calcium Phosphate Precipitaticn : Effects of Common and Foreign ions on Hydroxyapatite Crystal Growth / Soil Science Society of America Journal 45(3):482~486
Cha, W. S. / 2003 / A Study on Phosphorus Removal of Loess Ball / Journal Korean Ind. Eng. Chem. 14(6):764~768
de-Bashan, L.E. / 2004 / Recent Advances in Removing Phosphrous from Wastewater and its Future Use as Fertilizer(1997-2003) / Water Research 38(9):4222~4246
Brown, J. L. / 1978 / Precipitation of Calcium Orthophosphate at Slightly Alkaline pH
Brown, J. L. / 1981 / Calcium Phosphate Precipitaticn : Effects of Common and Foreign ions on Hydroxyapatite Crystal Growth / Soil Science Society of America Journal 45(3):482~486
Cha, W. S. / 2003 / A Study on Phosphorus Removal of Loess Ball / Journal Korean Ind. Eng. Chem. 14(6):764~768
de-Bashan, L.E. / 2004 / Recent Advances in Removing Phosphrous from Wastewater and its Future Use as Fertilizer(1997-2003) / Water Research 38(9):4222~4246
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