Journal of Environmental Impact Assessment (환경영향평가)

Korean Society of Environmental Impact Assessment (한국환경영향평가학회)
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Development of NH3 Emission Factors using a Dynamic Flux Chamber in a Sewage Treatment Plant

부유형 챔버를 이용한 하수처리장에서의 암모니아 배출 특성 연구

  • Jeon, Eui-Chan (Department of Earth & Environmental Sciences, Sejong University) ;
  • Sa, Jae-Hwan (Environment & Energy Research Center, Sejong University) ;
  • Park, Jong-Ho (Department of Earth & Environmental Sciences, Sejong University)
  • 전의찬 (세종대학교 지구환경과학과) ;
  • 사재환 (세종대학교 환경.에너지 연구소) ;
  • 박종호 (세종대학교 지구환경과학과)
  • Received : 2005.06.28
  • Accepted : 2005.09.14
  • Published : 2005.10.31
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Abstract

In this study, the major emission procedures and emission characteristics were identified at the site of sewage treatment plant which is one of the major sources of ammonia. At the same time the emission factors and emission rates were estimated. In order to calculate the emission flux, we used a Dynamic Flux Chamber(DFC), which is found to be a proper sampling devise for area sources such as sewage treatment plant. It was found that the most stable sampling condition was when the stirrer's speed of DFC was 120RPM, and it would be the best time to take a sample 60 minutes later after setting the chamber. The relatively higher flux was shown in Autumn compared to summer and winter. Annual ammonia emission rates procedures were calculated as $906.32{\mu}g/activity-ton$, $1,114.72{\mu}g/activity-ton$ and $437.53{\mu}g/activity-ton$ each at the primary settling basin, aeration basin and the final settling basin, respectively. The ammonia emission rate the highest at in the aeration basin according to this test. This results was due to that the surface of aeration basin or the final settling basin is relatively wider than the primary settling basin.

Keywords

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