상하수도학회지 (Journal of Korean Society of Water and Wastewater)

  • 제21권1호
  • /
  • Pages.91-99
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  • 2007
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  • 1225-7672(pISSN)
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  • 2287-822X(eISSN)
대한상하수도학회 (The Korean Society of Water and Wastewater)
권호 표지

활성탄 흡착지에서 응집조건에 따른 자연유기물질과 이·취미(Geosmin, 2-MIB) 파과특성에 관한 연구

A Study on Adsorption Characteristics of Natural Organic Matter and Taste & Odor Using Activated Carbon

  • 김성진 (숭실대학교 환경.화학공학과) ;
  • 홍성호 (숭실대학교 환경.화학공학과) ;
  • 신흥섭 (한국종합엔지니어링)
  • 투고 : 2006.11.17
  • 심사 : 2007.02.01
  • 발행 : 2007.02.15
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초록

It is well-known that the presence of NOM (natural organic matter) in water has a negative effect on removing taste and odor compounds by activated carbon adsorption. Therefore, various means such as enhanced coagulation are applied to reduce the NOM. The presence of taste & odor compounds in drinking water even parts per trillion, is enough to generate customer dissatisfaction. Therefore, the aim of this study was to evaluate carbon usage rate (CUR) for conventional coagulation (CC) and enhanced coagulation (EC) in order to improve the efficiency of adsorption of taste and odor compounds. Also, Effect of CC and EC on molecular weight fraction and the early stage breakthrough of 2-MIB and Geosmin are evaluated. When the enhanced coagulation was adapted for pretreatment for activated carbon adsorption the operation period could be prolonged by 3.5~4 times. CUR for CC was about 2 times greater than CUR for EC and this means that EC has more adsorption capacity than CC. To analyze effect of EC and CC on breakthrough of 2-MIB quantitatively, adsorbed NOM mass was calculated based on unit mass of activated carbon. In the early stage breakthrough of 2-MIB, total adsorbed NOM was 23.72mg/g for CC and 34.56mg/g for EC. Therefore, it is shown that the early breakthrough term of 2-MIB and Geosmin was improved due to increased adsorbability. The low-molecular-weight NOM (500~2000Da) compounds were the most competitive, participating in direct competition with 2-MIB for adsorption site.

키워드

과제정보

연구 과제 주관 기관 : 숭실대학교

참고문헌

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