Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Manganese Removal of Bank Filtrate using Manganese Sand Filtration

망간모래여과를 이용한 강변여과수의 망간제거

  • Kim, Chung-Hwan (Korea Institute of Water and Environment, Korea Water Resources Corporation) ;
  • Kim, Hak-Chul (Korea Institute of Water and Environment, Korea Water Resources Corporation) ;
  • Kim, Han-Seung (Korea Institute of Water and Environment, Korea Water Resources Corporation) ;
  • Kim, Berm-Soo (Korea Institute of Water and Environment, Korea Water Resources Corporation) ;
  • Ahn, Hyo-Won (Korea Institute of Water and Environment, Korea Water Resources Corporation)
  • 김충환 (한국수자원공사 수자원연구원) ;
  • 김학철 (한국수자원공사 수자원연구원) ;
  • 김한승 (한국수자원공사 수자원연구원) ;
  • 김범수 (한국수자원공사 수자원연구원) ;
  • 안효원 (한국수자원공사 수자원연구원)
  • Received : 2004.03.02
  • Accepted : 2004.08.25
  • Published : 2004.09.30
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Abstract

Pilot-scale experiments were performed for the treatment of bank filtrate contammg high manganese concentration around 2mg/L using rapid manganese sand filtration to investigate effects of oxidant dose and pH control on the removal efficiency of manganese. For theoretical dose ranges of oxidant (sodium hypochlorite) between 3 and 4mg/L, the manganese concentration of effluent was 0.57 mg/L, which corresponded to 72.5% removal and was higher than drinking water quality standards of 0.3mg/L. For excess dose ranges of oxidant between 4 and 8mg/L, the manganese concentration of effluent was reduced to 0.14mg/L, which corresponded to 94.5% removal, but the residual chlorine concentration was over 1.0mg/L. On the other hand, manganese removal efficiency drastically increased up to the value of 98.0%, which is equivalent to the effluent concentration of 0.03mg/L by controling pH to the range between 7 and 8 for the theoretical dose of oxidant. Consequently, these results indicated that appropriate dose of chemicals, such as oxidant and alkali, and continuous monitoring of manganese should be necessary to obtain efficient removal of manganese and to optimize the maintenance of treatment facilities for the treatment of bank filtrate with high concentration of manganese.

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References

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