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자료유형
학술저널
저자정보
저널정보
한국환경보건학회 한국환경보건학회지 한국환경보건학회지 제37권 제4호
발행연도
2011.1
수록면
315 - 322 (8page)

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Objectives: Organic matter and nitrogen were removed using the EGSB process, a high-rate anaerobic process,in combination with a nitritation-denitritation process, in order to ensure the stable treatment of seafood processing wastewater. Methods: The upflow velocity of an EGGS reactor was operated at 10 m/hr for maximal organics removal efficiency. For removal of nitrogen from seafood processing wastewater a nitritation-denitriation process was applied Results: The efficiency of the EGSB process showed that it has an 80% or more organic matter (CODcr)removal efficiency with an HRT of six hours or more at influent loadings of 17.34 kgCOD/m3/day or less. The methane product for TCODcr removal was 0.23-0.38 m3CH4/kgCODrem., which was similar to the theoretical generation of STP-state methane, 0.35 m3CH4/kgTCODrem. In the nitritation-denitritation process, the nitritation conversion rate to NH4 +-N concentration was 82% to 87%, 72% to 81% and 64% to 69% when HRT was 24 hr,21 hr and 18 hr, respectively. In the denitritation process, the ratio of SCOD consumption to NOx-N removal ranged from 2.347 to 2.587. It was 2.472 on average. Conclusions: The optimal HRT for stable processing of seafood processing wastewater is six hours or more. The ratio of nitrite to total NOx-N was 82% to 96%, which indicates that nitrite accounts for the largest portion of the product.

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