KSBB Journal

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Horizontal Flow Zeolite-Filled Reed Bed with Intermittent Feeding for Sewage Treatment

수평 흐름 제올라이트 갈대 여과상에 의한 생활하수 처리

  • Seo Jeoung-Yoon (Department of Environmental Engineering, College of Engineering, Changwon National University) ;
  • Kim Ean-Ho (Department of Environmental Engineering, College of Engineering, Changwon National University)
  • Published : 2006.02.01
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Abstract

A sewage was treated using a horizontal flow zeolite-filled reed bed. The sewage from the student dormitory of Changwon National University was fed into the reed bed for 10 minutes every 6 hours at the hydraulic load of $314L/m^2$ day. The filtering height of the reed bed was 100 cm and the zeolite mixture was filled in the reed bed. The mixture consisted of the same volume of two types of zeolite : $0.5{\sim}1mm$ and $1{\sim}3mm$ in diameter. Annual average removal efficiency was SS $88.5%,\;COD_{cr},\;86.1%,\;COD_{Mn}\;81.0%,\;T-N\;48.6%,\;NH_4^+-N\;97.1%$ and T-P 42.8%. T-N of effluent was mostly $NO_3^--N$ and the concentration of $NO_2^--N$ in effluent was lower than 0.1 mg/L. All removal efficiencies did not show a remarkable seasonal change.

제올라이트로 충진된 수평 흐름 갈대 여과상에 실제하수를 간헐적으로 주입하면서 처리효율을 조사하였다. 여과상 표면적 $m^2$당 1일 314 L의 하수가 6시간마다 10분 동안 간헐적으로 주입되었다. 처리수의 pH는 원수보다 감소하였으며, 용존산소 농도는 원수보다 증가하였다. 수평 흐름 여과상에서 각 항목별 연중 평균 처리효율은 SS $88.5%,\;COD_{cr},\;86.1%,\;COD_{Mn}\;81.0%,\;T-N\;48.6%,\;NH_4^+-N\;97.1%$, T-P 42.8%이었다. 수평 흐름 여과상에서 처리수 중 T-N의 대부분은 $NO_3^--N$이었으며 $NO_2^--N$의 농도는 0.10 mg/L 이하이었다. 처리효율의 계절적 차이는 없었다.

Keywords

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