한국물환경학회지 (Journal of Korean Society on Water Environment)

  • 제27권6호
  • /
  • Pages.769-775
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  • 2011
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  • 2289-0971(pISSN)
  • /
  • 2289-098X(eISSN)
한국물환경학회 (Korean Society on Water Environment)
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반류수 처리를 위한 생물막 아질산화공정에서 유기물과 고형물 농도에 따른 온도 영향 평가

The Evaluation of Temperature Effects on Biofilm Nitritation System with Various Organic and Solid Concentrations for High Strength Reject Water Treatment

  • 이한샘 (고려대학교 대학원 환경공학과) ;
  • 이상일 (한국환경정책평가연구원 물순환연구실) ;
  • 윤주환 (고려대학교 대학원 환경공학과)
  • Lee, Hansaem (Department of Environmental Engineering, Korea University) ;
  • Lee, Sangil (Korean Environment Institute) ;
  • Yun, Zuwhan (Department of Environmental Engineering, Korea University)
  • 투고 : 2011.05.23
  • 심사 : 2011.09.16
  • 발행 : 2011.11.30
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초록

An experimental study of biofilm nitritation system for high-strength ammonium wastewater has been carried out to examine the temperature effect on different organic and solid concentration. Operating temperature varied from $35^{\circ}C$ to $15^{\circ}C$. The influent N concentration of identical three reactors was adjusted to about $300mg\;NH_4-N/L$. A control unit fed with a synthetic wastewater, while the others were fed with reject water which is consisted of the supernatant of both digester and thickener. The results indicated that nitrite accumulation was stable in temperature range of $35^{\circ}C$ to $25^{\circ}C$. However, nitritation was significantly reduced at below $20^{\circ}C$. Free ammonia (FA) and free nitrous acid (FNA) were major inhibitors to the nitrite oxidizer for nitrite accumulation in lower temperature. From the estimation of temperature coefficient (${\Theta}$) of biofilm and suspended nitritation system, biofilm nitritation system could absorb the negative temperature effect compared with suspended nitritation system.

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참고문헌

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