한국산학기술학회논문지 (Journal of the Korea Academia-Industrial cooperation Society)

  • 제14권2호
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  • Pages.970-976
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  • 2013
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  • 1975-4701(pISSN)
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  • 2288-4688(eISSN)
한국산학기술학회 (The Korea Academia-Industrial cooperation Society)
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4단 간헐포기 공정의 운전조건이 고도처리에 미치는 영향

Effect of Advanced Wastewater Treatment by Variations Operating Conditions of 4-stage Intermittently Aerated Activated Sludge process

  • 최용범 (강원대학교 환경공학과) ;
  • 이정규 (강원대학교 환경공학과) ;
  • 한동준 (강원도립대학 소방환경방재과) ;
  • 권재혁 (강원대학교 환경공학과)
  • Choi, Yong-Bum (Dept. of Environmental Engineering Kangwon National University) ;
  • Lee, Jeong-Gyu (Dept. of Environmental Engineering Kangwon National University) ;
  • Han, Dong-Joon (Dept. of Fire·Environmental & Gangwon Provincial College) ;
  • Kwon, Jae-Hyouk (Dept. of Environmental Engineering Kangwon National University)
  • 투고 : 2012.10.24
  • 심사 : 2013.02.06
  • 발행 : 2013.02.28
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초록

본 연구는 간헐포기 공정을 이용하여 생활하수의 고도처리 효율을 증진시키는 방안을 제시하고자 수행되었다. 운전기간동안 유기물 제거효율 검토 결과, HRT 9hr 이상에서 TCODcr와 TBOD의 제거효율은 각각 91.1~96.3%와 91.4~97.5%로 높은 제거효율을 나타냈으나, HRT가 6hr에서는 각각 86.9~90.5%, 88.0~90.9%로 제거효율이 감소된 것으로 조사되었다. $NH_3$-N은 HRT 9hr 이상에서는 95% 이상의 높은 제거효율을 나타냈으며, T-N 제거효율은 HRT 9~12hr에서 67.6~76.7%, HRT 6hr에서는 50%로 감소되었는데 이는 탈질에 필요한 탄소원이 부족하기 때문이다. 운전기간동안 T-P 제거효율은 평균 32%로 낮게 조사되었는데 강화되는 법적기준을 준수하기 위해서는 반응조 후단에 화학적 인 제거 공정이 필요한 것으로 사료된다.

An evaluation of the organic matter removal efficiency showed high removal efficiencies of 91.1~96.3% and 91.4~97.5% for TCODcr and TBOD5, respectively, for 9hr or longer of HRT. However, the removal efficiencies decreased to 86.9~90.5% and 88.0~90.9%, respectively for 6hr of HRT. $NH_3$-N showed a high removal efficiency of 95% or higher for 9hr or longer of HRT. The total nitrogen removal efficiency was 67.6~76.7% for 9~12hr of HRT, and it decreased to 50% for 6hr of HRT, which seems to be due to the insufficient carbon source required for denitrification. The T-P removal efficiency was 32% on average. To comply with the legal standards, a chemical phosphorus removal process is needed after the reactor.

키워드

참고문헌

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