고율 혐기성 공정과 아질산-아탈질을 연계한 수산물가공폐수의 질소제거

• 영문명: Removal of Nitrogen in Seafood Processing Wastewater Using High-rate Anaerobic Process and Nitritation-denitritation
• 발행기관: 한국환경보건학회
• 저자명: 최용범(Yong-Bum Choi) 강동구(Dong-Gu Kang) 박상성(Sang-Sung Park) 엄기현(Ki-Hyun Eum) 임재명(Jay-Myung Rim) 권재혁(Jae-Hyouk Kwon)
• 간행물 정보: 『한국환경보건학회지』제37권 제4호, 315~322쪽, 전체 8쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2011.08.30

영문 초록

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.

키워드

Denitritation EGSB Nitritation Seafood processing wastewater