Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Effect of Zeta Potential of Clay and Algae Particles on Flotation Efficiency

점토와 조류입자의 제타전위가 부상분리 효율에 미치는 영향

  • 최도영 (서남대학교 환경화학공학부) ;
  • 김성진 (여수한영대학 보건환경학과) ;
  • 정흥조 (서남대학교 환경화학공학부) ;
  • 이세일 (서남대학교 환경화학공학부) ;
  • 백도현 (서남대학교 보건환경학과) ;
  • 이재욱 (서남대학교 환경화학공학부) ;
  • 곽동희 (서남대학교 환경화학공학부)
  • Received : 2005.04.08
  • Accepted : 2005.07.04
  • Published : 2005.08.15
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Abstract

Zeta potential is a key parameter of double layer repulsion for individual particles and can usually be used to interpret the trend of coagulation efficiency. This study focused on the measurement of zeta potential of algae and clay under various experimental conditions including water characteristics (pure water, stream water, reservoir water) and coagulant dose (10~50 mg/L). Results showed that the variation of zeta potential was highly sensitive depending on the water characteristics and coagulation conditions. Zeta potential of two genera of algae (anabaena sp. and microcystis sp.) were changed highly with coagulant dosage, especially. On the basis of trajectory analysis, bubble-floc collision efficiency simulated in terms of zeta potential was fitted well with removal efficiency of chlorophyll-a from algae particles. It was found that the control of zeta potential was important for effective removal of algae particles.

Keywords

Acknowledgement

Supported by : 한국과학재단

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