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Effect of Drinking Water Treatment by DOF(Dissolved Ozone Flotation) System  

Lee, Byoung-Ho (Department of Civil and Environmental Engineering, Ulsan University)
Song, Won-Chul (Department of Civil and Environmental Engineering, Ulsan University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.30, no.7, 2008 , pp. 743-750 More about this Journal
Abstract
In water treatment plant the Dissolved Ozone Flotation(DOF) System may be employed because this system has various abilities, such that it can remove SS using microbubbles, and it can exert strong oxidation power in removing taste and odor, color, and microbial agents. In order to investigate effectiveness of the DOF system in water treatment, removal characteristics of various water quality parameters were observed depending on the different levels of ozone concentrations. Removal efficiencies of water quality parameters in DOF system were compared with those in DAF(Dissolved Air Flotation) system and in CGS(Conventional Gravity Settling) system. Optimum ozone dose obtained in the pilot experiments was 2.7 mg/L. With increasing ozone dose higher than 2.7 mg/L, removal rates of turbidity, KMnO$_4$ consumption, UV$_{254}$ absorbance, and TOC were reversely lowered. High concentration of ozone dissociate organic matter in water, so that increasing dissolved organic level in effluent. Removal rates of water quality parameters at optimum ozone dose were obtained, such that removal rates of turbidity, KMnO$_4$ consumption, TOC, and UV$_{254}$ asorbance were 88.9%, 62.9%, 47%, and 77.3% respectively. Removal rate of THMFP was 51.6%. For all the parameters listed above, the DOF system was more effective than the DAF system or the CGS system. It is found that the DOF system may be used in advanced water treatment not only because the DOF system is more efficient in removing water quality parameters than the existing systems, but because the DOF system is also required smaller area than the CGS system for the treatment plant.
Keywords
Ozone; DAF; DOF; CGS; Advanced Water Treatment;
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Times Cited By KSCI : 3  (Citation Analysis)
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1 Owen, D. M., Amy, G. L., Chowdhury, Z. K., Paode, R., McCoy, G., and Viscosil, K., 'NOM characterization and treatability,' J. Am. Water Works Assoc., 87(1), 46-63(1995)
2 손희종, 정철우, 강임석, '상수원수 중의 천연유기물질 특성과 염소 소독부산물 생성의 관계,' 대한환경공학회지, 26(4), 457-466(2004)
3 Cho, M., Chung, H., and Yoon, J., 'Quantitative evaluation of the synergistic sequential inactivation of Bacillus subtilis spores with ozone followed by chlorine,' Environ. Sci. Technol., 37, 2134-2138(2003)   DOI   ScienceOn
4 Becher, W. C. and C. R. O'Melia, 'The effect of ozone on the coagulation of turbidity and TOC,' 12th Ozone World Congress, Proceddings, 1, 505-516(1995)
5 임영성, 이홍재, 이도진, 허종수, 손보균, 조주식, '낙동강 상수원수의 오존처리 효과 - II. 회분식 오존처리에 의한 휘발성 유기화합물 및 조류제거 효과-,' 한국환경과학회지, 11(12), 1267-1274(2002)
6 Wilson, D., Lewis, J., Nogueria, F., Faivre, M., and Boisdom, V., 'The use of ozoflotation for the removal of algae and pesticides from a stored lowland water,' Ozone Science & Engineering, 15, 481-496(1993)   DOI   ScienceOn
7 조민, 정현미, 김이호, 손진식, 박상정, 윤제용, '실험실 규모의 크립토스포리디움의 불활성화 실험을 통한 오존 고도정수처리 정수장에서 소독 효과 예측,' 한국물환경학회지, 21(1), 7-13(2005)
8 울산지역환경기술개발센터, 'DOF(Dissolved Ozone Flotation)을 이용한 하.폐수 방류수 살균 및 고도처리 기술 개발,' 환경부, pp. 125-137(2005)
9 APHA, AWWA, WEF, 'Sandard methods for the examination of water and wastewater,' APHA, 19th Edition, 2-41-2-42(1995)
10 Reckhow, D. A., P. C. Singer and R. R. Trussell, 'Ozone as a coagulant aid', Proc. AWWA(1986)
11 류동춘, 정형숙, 양병수, '전오존 주입이 낙동강 상수원 수수질 및 응집효과에 미치는 영향,' 한국수질보전학회지, 13(4), 441-450(1997)
12 이성우, 이현동, 한명호, 곽동희, 김충환, '고도상수처리- 원리 및 응용,' 도서출판 동화기술, pp. 515-527(2003)
13 박세진, 차일권, 윤태일, '정수처리공정에서 조류유래 유기물질의 제거,' 대한환경공학회지, 27(4), 377-384(2005)
14 Rennecker, J., Marinas, B. J., Owens, J. H., and Rice, E. W., 'Inactivation of Cryptosporidium parvum oocysts with ozone,' Water Res., 33(11), 2481-2488(1999)   DOI   ScienceOn
15 宗 宮 功 편저, 강준원, 구자용, 최승일, 정재춘, 육운수 공역, '오존을 이용한 수처리 기술,' 도서출판 동화기술, 2판, pp. 115-122(2004)
16 Langlais, B., REckhow, D. A., Brink, D. R., 'Ozone in water treatment application and engineering,' AWWAKF Cooperative Report, Lewis Publisher, Chelsea, Mich., 190- 213(1991)
17 Krasner, S. W., 'Chemistry of disinfection by-product formation', Formation and Control of Disinfection By- Products in Drinking Water, Singer, P. C.(Ed), American Water Works Association, Denver, 27-52(1990)
18 Veenstra, J. N. and Schnoord, J. L., 'Seasonal variations in trihalomethane levels in an Iowa river water supply,' J. Am. Water Works Assoc., 72, 583-590(1980)   DOI
19 이철우, 정철우, 한승우, 강임석, 이정호, '산화와 응집공정을 이용한 조류제거,' 대한환경공학회지, 23(9), 1527- 1536(2001)