Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Continuous removal of phosphorus in water by physicochemical method using zero valent iron packed column

영가철 충진 컬럼을 이용한 연속적인 물리화학적 수중 인 제거

  • Jeong, Jooyoung (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Ahn, Byungmin (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Kim, Jeongjoo (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Park, Jooyang (Department of Civil and Environmental Engineering, Hanyang University)
  • 정주영 (한양대학교 건설환경공학과) ;
  • 안병민 (한양대학교 건설환경공학과) ;
  • 김정주 (한양대학교 건설환경공학과) ;
  • 박주양 (한양대학교 건설환경공학과)
  • Received : 2013.05.06
  • Accepted : 2013.08.12
  • Published : 2013.08.15
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Abstract

Excessive phosphorus in aquatic systems causes algal bloom resulting in eutrophication, DO depletion, decline in recreational value of water and foul tastes. To treat wastewater containing phosphorus including effluent of wastewater treatment plant, the continuous experiments were performed by using electrochemical way. The spherical ZVI and silica sand which act as physical filter are packed at appropriate volume ratio of 1:2. Electric potential is applied externally which can be changed as per the operational requirement. The results indicate that optimum hydraulic retention time of 36 minutes (10 mL/min at 1 L reactor) was required to meet the effluent standards. Lower concentrations of phosphorus (<10 mg/L as phosphate) were removed by precipitation by contact with iron. Thus, additional electric potential was not required. In order to remove high concentration phosphorus around 150 mg/L as phosphate, external electric potential of 600 V was applied to the reactor.

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References

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