오존 및 초음파 복합 전처리가 하수슬러지의 특성 및 메탄발효에 미치는 영향

Title
오존 및 초음파 복합 전처리가 하수슬러지의 특성 및 메탄발효에 미치는 영향
Other Titles
Effects of Sequetial Ozonation and Ultrasonication on Sewage Sludge and its Methane Fermentation
Author(s)
전관수양봉호[양봉호]안남우
Keywords
Sewage sludge; Methane fermentation; Ozonation; Ultrasonication; Centrifuge; Filtrate
Issue Date
201112
Publisher
한국폐기물자원순환학회
Citation
한국폐기물자원순환학회지, v.28, no.8, pp.904 - 910
Abstract
The respective effects of sequential ultrasonication followed by ozonation and ozonation followed by ultrasonication on the characteristics of sewage sludge and its methane fermentation were evaluated in this study. The COD of filtrate and centrifugal supernatant from sludge were determined after sequential ozonation for 10 minutes and ultrasonication for 30 minutes. The concentrations of centrifugal supernatant were higher than filtrate as much as 60 ~ 134% in COD. The COD of centrifugal supernatant from sludge after sequential alkaline ozonation followed by ultrasonication was higher than the control and the other as much as 2,756% and 22%. The methane from the ultrasonicated sludge after alkaline ozonation was more than the control and the other as much as 40% and 35%, respectively. The specific resistances of sludge for dewatering after anaerobic digestion were 1.620 × 10^(12) to 2.083 × 10^(12) m/kg, and they were similar to each other in the all cases of sequential ozonation and ultrasonication and none treatment. As a result of this study, sequential alkaline ozonation followed by ultrasonication would be useful for methane fermentation of sewage organic sludge before the anaerobic digestion.
URI
http://hdl.handle.net/YU.REPOSITORY/24120
ISSN
2093-2332
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공과대학 > 환경공학과 > Articles
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