Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Removal of Taste and Odor by Powdered Activated Carbon Adsorption and Air Stripping

분말활성탄 흡착 및 탈기에 의한 이취미 제거

  • 전항배 (충북대학교 환경공학과) ;
  • 나광주 (한국수자원공사 청주정수장) ;
  • 서태경 (충북대학교 환경공학과) ;
  • 박상민 (충북대학교 환경공학과)
  • Received : 2007.12.05
  • Accepted : 2008.08.08
  • Published : 2008.08.15
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Abstract

Powered activated carbon(PAC) has been widely applied for controling odor causing compounds(OCCs) from water treatment plants. Because of their volatility, the OCCs can also be removed from water by air stripping methods. In this study, OCCs removal was tested with PAC adsorption, air stripping, and both PAC adsorption and air stripping from the Taecheong lake water. Removal efficiency of OCCs in terms of threshold odor number(TON) were 39.6% by both PAC (15mg/L) adsorption and aeration for 30 min, 33.6% by PAC(15mg/L) adsorption alone for 30 min, and 22.9% by aeration alone for 30 min, respectively. OCCs could be removed up to 50% by aeration for 120 min without PAC adsorption. At an extended aeration with 15mg/L of PAC, OCCs removal occurred mainly by PAC adsorption within 30 min aeration while it continued by air stripping afterward. At simulated jar tests with the raw water, removal efficiencies of geosmin and MIB were 48.3, 36.1% by coagulation and sedimentation without PAC addition. With 15mg/L of PAC on the same jar tests, the removal efficiencies were 83.1, 60.1%, respectively. Without PAC, OCCs could be possibly removed by stripping during the agitation processes.

Keywords

Acknowledgement

Supported by : 충북대학교

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