서지주요정보
난분해성 산업폐수의 오존처리에 의한 생분해성의 향상 = Improving biodegradability of industrial wastewater containing refractory pollutant by ozonation
서명 / 저자 난분해성 산업폐수의 오존처리에 의한 생분해성의 향상 = Improving biodegradability of industrial wastewater containing refractory pollutant by ozonation / 임재림.
저자명 임재림 ; Lim, Jae-Lim
발행사항 [대전 : 한국과학기술원, 1992].
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등록번호

8002935

소장위치/청구기호

학술문화관(문화관) 보존서고

MCIE 92003

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초록정보

The concentrated organic pollutants discharged from fine chemical industries are usually nonbiodegradable or even toxic to microorganisms disturbing the biological treatment systems. The wastewater including naphthalene sulfonic acid(NSA), phenol, benzene, and pyridine are quite resistant to biological treatment. In this respect, it was attempted to improve the biodegradability of the pollutants by ozone oxidation. In order to determine the optimal conditions for ozonation, various operation factors such as initial pollutant concentrations, pH, and ozone dose were evaluated. Generally, ozone utilization rate was improved with the increase of initial concentration of pollutants and also, removed COD was increased in proportion to the absorbed ozone dose. In case of NSA, 19-84% COD and 6-50% TOC changed to biodegradable(BOD5/COD=0.27-0.48). The ratio varied depending upon initial concentration of NSA(500-5,000ppm). But ozonation of phenol had an adverse effect on the biodegradability, judging from the decrease of BOD5/COD from 0.78 to 0.51. Also, efficiency of pyridine and phenol improved with the pH increase. Biodegradability of the mixture of phenol and NSA with equal amount of 1,500 ppm increased remarkably to BOD5/COD=0.52 by ozonation for 150min. The treatment efficiency of an industrial wastewater containing NSA in the activated sludge system was investigated after acclimating microorganisms for 45 days. COD removal efficiency of ozonated wastewater gradually increased up to 81% in 20 days however, that of unozonated wastewater was only 32%.

서지기타정보

서지기타정보
청구기호 {MCIE 92003
형태사항 viii, 80 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Jae-Lim Lim
지도교수의 한글표기 : 신항식
지도교수의 영문표기 : Hang-Sik Shin
학위논문 학위논문(석사) - 한국과학기술원 : 토목공학과,
서지주기 참고문헌 : p. 76-80
주제 Sewage.
Ozone.
Hazardous substances.
폐수. --과학기술용어시소러스
오존 처리. --과학기술용어시소러스
독성 물질. --과학기술용어시소러스
Factory and trade waste.
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