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NTIS 바로가기Korean journal of microbiology = 미생물학회지, v.54 no.2, 2018년, pp.105 - 112
엄한기 (경기대학교 환경에너지공학과) , 김성철 (경기대학교 환경에너지공학과)
To compare the denitrification efficiency, this study used molasses and methanol were used as external carbon sources. Specific experimental conditions were classified according to C/N ratio conditions. The batch test showed that the denitrification efficiency increased as C/N ratios of molasses and...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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당밀은 무엇인가? | 당밀(Molasses)은 설탕을 제조할 때 부산물로 생산되는 액체이다. 특히, 사탕수수 당밀은 설탕이 더 이상 결정화되지 않고 남은 검은색의 점성이 높은 액체이다. | |
탈질화 과정에서 외부탄소원을 주입하였을 때 단점은 무엇인가? | , 2012). 그러나 외부탄소원의 주입은 탈질 후 잔류 유기물에 대한 처리가 요구되며, 외부탄소원 주입에 따른 약품비 등 운영비의 증가를 야기시킨다(Yoon et al., 2010). | |
탄소 원의 비율이 낮아 질산성 질소를 충분히 제거하지 못하면 우려되는 점은 무엇인가? | 질산성 질소(Nitrate, NO3--N)를 N2로 탈질시키기 위해서는 탄소원이 충분해야 한다(Wiesmann, 1994). COD/total kjeldahl nitrogen (TKN)(C/N ratio) 비율이 낮아 탄소원이 부족할 경우에는 질소를 제거하는데 한계가 있으며, 생물학적 탈질 작용이 원활히 이루어지지 않을 경우 하수처리장 방류수 수질기준 중 총 질소(T-N 20 mg/L)의 수질기준을 초과할 우려가 있다. 이에 따라 C/N ratio가 낮은 하수를 제거하기 위해서는 인위적으로 외부탄소원(External Carbon Source)을 주입해야 한다(Isaacs et al. |
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