Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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The application of multifunctional metal oxide for wastewater treatment: Adsorption and disinfection

다기능 금속산화물의 하수처리 적용-흡착 및 살균

  • Kim, Heegon (Water Cycle Research Center, Korea Institute of Science and Technology) ;
  • Park, Duckshin (Transportation Environmental Research, Korea Railroad Research Institute) ;
  • An, Byungryul (Civil Engineering, Sangmyung University)
  • 김희곤 (한국과학기술연구원 물자원순환연구센터) ;
  • 박덕신 (철도기술연구원 교통환경연구팀) ;
  • 안병렬 (상명대학교 건설시스템공학과)
  • Received : 2019.07.23
  • Accepted : 2019.07.31
  • Published : 2019.08.15
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Abstract

The physical treatment such as chemical precipitation or adsorption was usually added after biological treatment in wastewater treatment process since it was enforced to reduce the concentration of phosphate for wastewater effluent to 0.2 mg/L as P which was well known as one of main nutrient causing eutrophication in waterbody. Therefore, the new material functioned for both adsorption and disinfection was prepared with Fe and Cu, and $TiO_2$, respectively, by changing the ratio of concentration referred to tri-metal (TM). According to SEM-EDS, $TiO_2$ was 30~40% composition for any TM regardless of any synthesis condition. However, the ratio of composition for Fe and Cu was dependent on the initial Fe and Cu concentration, respectively. The removal efficiency of phosphate was obtained to 15% at low initial concentration and the maximum uptake (Q) was calculated to ~11 mg/g through Langmuir isotherm model using TM1 which was synthesized at 1000 mg/L, 1000 mg/L, and 2 g (10 g/L) for $Fe(NO_3)_3$, $Cu(NO_3)_2$, $TiO_2$, respectively. In disinfection test, the efficiency of virus removal using TM was increased with increase of dosage of TM and can be reached 98% at 0.2 g.

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References

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