지원사업
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.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 김성홍
- 발행연도
- 2015
- 저작권
- 조선대학교 논문은 저작권에 의해 보호받습니다.
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초록· 키워드
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The Membrane bioreactor(MBR) has now become an attractive option for the treatment of waste waters, as evidenced by their constantly rising numbers and capacity. It combines activated sludge treatment with a membrane separation process. For the sewage treatment, MBR is excellent for the treatment of COD(Chemical oxygen demand), SS(Suspended solid) and microorganisms. But, sludge concentration is increased in a bioreactor over a long operation time. When sludge concentration is increased, membrane fouling occurs.
This study focused on the evaluation of performance of the MBR combined with a ultrasonic sysytem, ultrasonic system for the advanced treatment of sewage in terms of COD, SS and . The laboratory scale with capacity of 28.8 had operated for fifty days with two operational patterns, namely Mode1(non-Ultrasonic) and Mode2(combined ultrasonic). Mode1''s membrane fouling occurred, because Mixed Liquor Suspended Solid(MLSS) is increased. So membrane''s surface scrubbed. Due to the ultrasonic operate that Mode2''s MLSS is decreased. So membrane contamination slacken. Also the COD''s processing ratio of Mode1 and Mode2 were excellent over 95%. However, the COD was increased 2.8 by ultrasonic treatment. MBR needs an aerobic process and anaerobic process for phosphorus treatment. In this study, Mode1''s phosphorus processing ratio was 38%, because only aerobic process was performed. Mode2''s phosphorus was increased by ultrasonic treatment, because ultrasonic splits sludg. So phosphorus was dissolved in sludge. This study demonstrates that the combination of MBR and ultrasonic process is an excellent technology as membrane fouling and COD treatment. But, this process needs phosphorus treatment process.
This study focused on the evaluation of performance of the MBR combined with a ultrasonic sysytem, ultrasonic system for the advanced treatment of sewage in terms of COD, SS and . The laboratory scale with capacity of 28.8 had operated for fifty days with two operational patterns, namely Mode1(non-Ultrasonic) and Mode2(combined ultrasonic). Mode1''s membrane fouling occurred, because Mixed Liquor Suspended Solid(MLSS) is increased. So membrane''s surface scrubbed. Due to the ultrasonic operate that Mode2''s MLSS is decreased. So membrane contamination slacken. Also the COD''s processing ratio of Mode1 and Mode2 were excellent over 95%. However, the COD was increased 2.8 by ultrasonic treatment. MBR needs an aerobic process and anaerobic process for phosphorus treatment. In this study, Mode1''s phosphorus processing ratio was 38%, because only aerobic process was performed. Mode2''s phosphorus was increased by ultrasonic treatment, because ultrasonic splits sludg. So phosphorus was dissolved in sludge. This study demonstrates that the combination of MBR and ultrasonic process is an excellent technology as membrane fouling and COD treatment. But, this process needs phosphorus treatment process.
목차
목 차ABSTRACT제 1 장 연구배경 및 목적 1제 2 장 이론적 고찰 22.1 막(Membrane) 22.1.1 막의 정의 22.1.2 막의 역사 22.1.3 막의 특징 32.2 막분리의 종류 32.2.1 분리특성에 따른 막의 분류 32.2.2 모듈특성에 따른 막의 분류 62.2.3 재질특성에 따른 막의 분류 102.3 침지형 막분리 활성슬러지법(MBR) 132.3.1 막분리 활성슬러지법의 특징 132.3.2 막분리 활성슬러지법의 형태 152.3.3 막분리 활성슬러지법의 영향인자 172.4 생물학적 유기물 및 질소, 인제거 222.4.1 생물학적 유기물 제거 222.4.2 생물학적 질소 제거 262.4.3 생물학적 인 제거 312.5 슬러지 가용화 방법 322.5.1 기계적 처리 332.5.2 화학적 처리 332.5.3 열적 처리 342.5.4 생물학적 처리 352.5.5 전기적 처리 352.6 초음파 처리 362.6.1 초음파의 정의 362.6.2 초음파의 응용원리 362.6.3 공동화 현상(Cavitation) 36제 3 장 실험 재료 및 방법 383.1 침지형 막분리 활성슬러지법 383.2 초음파 결합 침지형 막분리 활성슬러지법 43제 4 장 결과 및 고찰 484.1 MLSS 및 운전압력의 변화 484.2 COD의 제거 효율 504.3 인 농도의 변화 52제 5 장 결 론 53참 고 문 헌 55감사의 글 60
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