Clean Technology (청정기술)

The Korean Society of Clean Technology (한국청정기술학회)
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Nitrate Removal and Recycling Technique

질산 제거 및 재이용 기술

  • Sim, Sang Jun (Clean Technology Research Center, Korea Institute of Science and Engineering) ;
  • Lee, Kyung Hee (Clean Technology Research Center, Korea Institute of Science and Engineering) ;
  • Cho, Young Sang (Clean Technology Research Center, Korea Institute of Science and Engineering)
  • 심상준 (한국과학기술원 청정기술연구센터) ;
  • 이경희 (한국과학기술원 청정기술연구센터) ;
  • 조영상 (한국과학기술원 청정기술연구센터)
  • Published : 1997.12.01
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Abstract

Nitrate contamination in surface water and ground water have increased in Korea. This trend has raised concern because nitrates caused methemoglobinemia in infants. To remove nitrates from waters, various purification processes including ion-exchange, biological denitrification, and chemical denitrification are currently in use for the treatment of water. However, little economically advantageous process exists for the industrial scale treatment of effluents highly polluted with nitrates. A new process has been developed for nitrate and other salts removal from polluted waters. Alumina cement and lime served as precipitating agents to remove nitrate with stirring at basic pH. Decreasing alumina content in alumina cement result in a increasing in nitrate removal yield. Stable removal of nitrate(1000mg/L) was readily achieved by two-stage removal process.

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