SBR 및 MBR 공정을 이용한 분뇨폐수에서의 질소제거 특성

정진희; 윤영내; 이슬기; 한영립; 이승철; 최영익

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자료유형: 학술저널

저자정보: 정진희 윤영내 이슬기 한영립 이승철 최영익

저널정보: 한국환경과학회 한국환경과학회지 한국환경과학회지 제24권 제11호

발행연도: 2015.11

수록면: 1,485 - 1,491 (7page)

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There are two treatment processes that are currently applied to ships are the biological treatment process using the activated sludge and the electrochemical treatment. However, neither of them are able to remove both nitrogen and phosphorus due to their limited ability to remove organic matters, which are main causes of the red tide. This study was conducted to identify the characteristics of nitrogen removal factors from manure wastewater by replacing the final settling tank in SBR (Sequencing Batch Reactor) process and applying immersion type hollow fiber membrane. SBR process is known to have an advantage of the least land requirement in special environment such as in ship and the immersion type hollow fiber membrane is more stable in water quality change. As the result, the average in the cases of DO (Dissolved Oxygen) is 2.9(0. 6∼3.9) mg/L which was determined to be the denitrifying microorganism activity in anaerobic conditions. The average in the cases of ORP (Oxidation Reduction Potential) is 98.4∼237.3 mV which was determined to be the termination of nitrification since the inflection point was formed on the ORP curve due to decrease in the stirring treatment after the aeration, same as in the cases of DO. Little or no variation in the pH was determined to have positive effect on the nitrification. T-N (Total Nitrigen) removal efficiencies of the finally treated water were 71.4%, 72.3% and 66.5% in relatively average figures, thus was not a distinct prominence. In being applied in ships in the future, the operating conditions and structure improvements are deemed necessary since the MEPC (Marine Environment Protection Committee). 227(64) ship sewage nitrogen is less than the standard of 20 Qi/Qe mg/L or the removal rate of 70%.

#DO (Dissolved Oxygen) #IMO(International Maritime Organization) #MARPOL #MBR (Membrane Bio Reactor) #MEPC. 227(64) (Marine Environment Protection Committee) #ORP (Oxidation Reduction Potential) #SBR (Sequencing Batch Reactor) #T-N (Total Nitigen)

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주요연구분야 자연과학 > 지구과학 > 지구과학 일반 공학 > 건축공학 > 환경공학

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