Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
권호 표지

A Study for Application of DAF Technology to Remove Chrolophyl-a and Dissolved Organic Compound in Yongdam Reservoir

용담호소 내 Chlorophyl-a와 유기물 저감을 위한 부상기법 적용 연구

  • 독고석 (단국대학교 토목환경공학) ;
  • 이형집 (우석대학교 토목환경공학과)
  • Received : 2006.03.08
  • Accepted : 2006.04.13
  • Published : 2006.04.15
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Abstract

Yongdam reservoir located in Jeoliabuk-do has had a lot of concerns for its algal blooming since it has started to fill water. Many water utilities near Yongdam area use reservoirs even though they have some problems with certain algae that cause tastes and odors and clog filters. In this research, dissolved air flotation (DAF) technology was examined for feasibility for removal of algae. OAF can save the capital cost for its compactness, because its hydraulic loadings (overflow rates) are 10 times higher than sedimentation, and hydraulic detention times are much shorter, typically 5 to 15 minutes. As a result of this research, PAC is effective rather than Alum to DAF for pretreatment. Higher DOC plays an important role to change zetapotential negatively to inhibit destabilization of particle to coagulation. The length of pipeline to carry pressurized water into reactor does not affect reaction.

Keywords

References

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