Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Development of Encapsulated Media for Ammonia Removal

암모니아 가스 제거를 위한 포괄고정화 담체 개발

  • Jeong, Mi-young (School of Environment & Applied Chemistry, Center for Environmental Studies, Kyunghee University) ;
  • Namgung, Hyeong Kyu (Department of Civil & Environmental Engineering, Sejong university) ;
  • Song, Ji Hyeon (Department of Civil & Environmental Engineering, Sejong university) ;
  • Hwang, Sun-Jin (School of Environment & Applied Chemistry, Center for Environmental Studies, Kyunghee University)
  • 정미영 (경희대학교 환경응용화학대학 및 환경연구센터) ;
  • 남궁형규 (세종대학교 토목환경공학과) ;
  • 송지현 (세종대학교 토목환경공학과) ;
  • 황선진 (경희대학교 환경응용화학대학 및 환경연구센터)
  • Received : 2008.12.30
  • Accepted : 2009.02.24
  • Published : 2009.03.30
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Abstract

Packed-bed reactor for removing ammonia was tested at different loading rates. Nitrifiers for ammonia removing was encapsulated in gel media which consisted of polyethlene glycol, alginate and activated carbon. The removal efficiency was nearly 100% when ammonia loading was $12g/m^3/hr$, and the maximum elimination capacity (EC) achieved on this study was $18g/m^3/hr$. The initial microbial portion of nitrifiers in the media was about 82% and it was increased to more than 90% at the end of the operation. Short-term shock loading test was carried out to survey the stability of the media. The inlet loading rates were varied from 2 to $20g/m^3/hr$. The packed-bed reactor overcame the shock loading i.e. removal efficiency recovered rapidly from about 80% to almost 100% within 6 hrs. The results of Live/Dead cell test showed that nitrifiers maintained there activity in the encapsulated media during the test and also against ammonia shock load.

Keywords

Acknowledgement

Supported by : 환경부, 경희대학교

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