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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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A lab-scale vertical flow subsurface (VFS) wetland composed of three parallel columns with polypropylene synthetic fiber as main substrate was operated. Piggery stormwater diluted from swine excreta was fed to the wetland on the basis of three different hydraulic regimes or hydraulic retention time (HRT) of 2, 4, and 8 days with daily internal recirculation. Then, monitoring of common water quality parameters was carried out. Unexpectedly, an increase of effluent COD concentration accompanying the appearance of foams was observed during a distinct period in the wetland with HRT 2, 4, and 8 days, successively. Subsequently, a series of experiments was conducted to investigate the origin of the foams. Foams and the increase of COD concentration were found to be induced by the release of organic matter from the synthetic polypropylene fiber which was fed with piggery stormwater. Meanwhile, nitrogen removal was found to be enhanced during a period which overlapped the distinct foaming period signifying that foaming played two important functions in biological nitrogen removal. Foams which form rapidly and then burst easily could hold up and then release oxygen for nitrification. Foams which contain organic surfactants could serve as carbon sources for denitrification as well. Hence, nitrogen removal was enhanced during the foaming stage. After that, COD concentration decreased slowly to a level prior to the foaming stage, and nitrogen removal efficiency declined as well.
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참고문헌 (20)
참고문헌 신청
APHA / 1995 / Standard methods for the examination of water and wastewater / APHA/AWWA/WEF
Maryam Asgharpour / 2010 / Effect of surface contaminants on oxygen transfer in bubble column reactors / Biochemical Engineering Journal 49(3):351~360
C. Aymonier / 2001 / Global reaction heat of acetic acid oxidation in supercritical water / The Journal of Supercritical Fluids 21(3):219~226
Baker RW / 2004 / Membrane Technology and Application / John Wiley & Sons, Ltd.
Robert Bernstein / 2007 / The origins of volatile oxidation products in the thermal degradation of polypropylene, identified by selective isotopic labeling / Polymer Degradation and Stability 92(11):2076~2094
Maryam Asgharpour / 2010 / Effect of surface contaminants on oxygen transfer in bubble column reactors / Biochemical Engineering Journal 49(3):351~360
C. Aymonier / 2001 / Global reaction heat of acetic acid oxidation in supercritical water / The Journal of Supercritical Fluids 21(3):219~226
Baker RW / 2004 / Membrane Technology and Application / John Wiley & Sons, Ltd.
Robert Bernstein / 2007 / The origins of volatile oxidation products in the thermal degradation of polypropylene, identified by selective isotopic labeling / Polymer Degradation and Stability 92(11):2076~2094
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