Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Effect of Ozonation and Coagulation on NOM Molecular Distribution and Activated Carbon Adsorption Capacity

응집과 오존처리가 NOM 분자량 분포특성과 활성탄 흡착능에 미치는 영향

  • 김성진 (숭실대학교 환경화학공학과) ;
  • 홍성호 (숭실대학교 환경화학공학과)
  • Received : 2005.05.20
  • Accepted : 2005.07.14
  • Published : 2005.08.15
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Abstract

The main goals of this work are to investigate the effect of molecular weight distribution(MWD) and activated carbon adsorption capacity after conventional coagulation and enhanced coagulation. The ozonation was very effective to decompose the NOM to smaller size and to remove molecular smaller than 1,000. The concentration of DOC was reduced 0.25mg/L and 0.56mg/L by the conventional coagulation and the enhanced coagulation, respectively The conventional coagulation was not effective to remove NOM. However, the enhanced coagulation was effective to remove MW bigger than 10,000. The higher MW was shifted to smaller weight by ozonation in the raw water and the after conventional coagulation. After enhanced coagulation the MW had not changed significantly by ozonation. Also, it was observed that the ozone dosage did not have significant impact on MW shifting to smaller size. The adsorption capacity simulated by IAST comparing K values showed that the adsorption capacity was not impacted by ozone doses. There was very strong correlation between MW smaller than 10,000 and the mid- and strongly adsorbable fractions.

Keywords

Acknowledgement

Supported by : 숭실대학교

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