Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Effects of Dual-Coagulant Performance

이중응집이 응집공정에 미치는 영향

  • 김희근 (창원대학교 환경공학과) ;
  • 문병현 (창원대학교 환경공학과) ;
  • 김승현 (경남대학교 토목환경공학부)
  • Received : 2004.12.02
  • Accepted : 2005.01.28
  • Published : 2005.02.15
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Abstract

This research is to investigate the effect of the dual coagulant using inorganic coagulants($AICl3{\cdot}6H2O$) and polymer on the coagulant process. Jar-test was conducted by using Kaolin injected raw water. PDA(Photometric Dispersion Analyzer) equipment in order to analyze the size of the particles and the characteristics of the shapes. The change in the rate of sample ores' residual deposited after coagulants were also compared. According to the result derived from this experiment, the concentration of inorganic coagulant reduced 50% and the residual was lower by using dual coagulants compared to using single coagulant. However the dual coagulant required sufficient mixing time, and affected particle characteristics, with the effect of the injection order of coagulants, the simultaneous injection of inorganic coagulant and polymer showed the most effective in the particle removal.

Keywords

Acknowledgement

Supported by : 경남대학교

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