Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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A study on the evaluation of phosphate removal efficiency using Fe-coated silica sand

철 코팅 규사의 인산이온 제거 효율 평가 연구

  • Jo, Eunyoung (Environmental convergence technology center, Department of environmental engineering, Korea testing laboratory) ;
  • Kim, Younghee (Ilshin environmental Engineering Co. Ltd.) ;
  • Park, Changyu (Environmental convergence technology center, Department of environmental engineering, Korea testing laboratory)
  • 조은영 (한국산업기술시험원 환경기술본부 환경융합기술센터) ;
  • 김영희 ((주)일신종합환경) ;
  • 박찬규 (한국산업기술시험원 환경기술본부 환경융합기술센터)
  • Received : 2017.08.09
  • Accepted : 2017.11.08
  • Published : 2017.12.15
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Abstract

Phosphorus is one of the limiting nutrients for the growth of phytoplankton and algae and is therefore one of leading causes of eutrophication. Most phosphorous in water is present in the form of phosphates. Different technologies have been applied for phosphate removal from wastewater, such as physical, chemical precipitation by using ferric, calcium or aluminum salts, biological, and adsorption. Adsorption is one of efficient method to remove phosphates in wastewater. To find the optimal media for phosphate removal, physical characteristics of media was analysed, and the phosphate removal efficiency of media (silica sand, slag, zeolite, activated carbon) was also investigated in this study. Silica sand showed highest relative density and wear rate, and phosphate removal efficiency. Silica sand removed about 36% of phosphate. To improve the phosphate removal efficiency of silica sand, Fe coating was conducted. Fe coated silica sand showed 3 times higher removal efficiency than non-coated one.

Keywords

References

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