Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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A Study on the Removal of Nitrate Nitrogens by Redox Reaction of Zinc Ball

아연볼의 산화·환원 반응을 통한 연속식 질산성질소 처리에 관한 연구

  • Kim, Joon Hwan (Division of Civil, Environmental and Chemical Engineering, Changwon National Univ.) ;
  • Kim, Jong Hwa (Division of Civil, Environmental and Chemical Engineering, Changwon National Univ.) ;
  • Song, Ju Yeong (Division of Civil, Environmental and Chemical Engineering, Changwon National Univ.)
  • 김준환 (창원대학교 토목환경화공융합공학부) ;
  • 김종화 (창원대학교 토목환경화공융합공학부) ;
  • 송주영 (창원대학교 토목환경화공융합공학부)
  • Received : 2017.08.02
  • Accepted : 2017.08.29
  • Published : 2017.09.30
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Abstract

Since nitrate nitrogen is quite stable in aqueous solution, considerable skill is required to remove it. Low concentrations of nitrate nitrogen are easily removed, while high concentrations of nitrate nitrogen are difficult to remove. This study is to show that nitrate nitrogen in the form of gaseous nitrogen can be removed by using zinc ball with a diameter of about 3mm and to test the removal characteristics of nitrate nitrogen under various reaction conditions. As a result of this study, the treatment efficiency of nitrate nitrogen by continuous treatment with zinc ball was about 80%. However, there is a problem that the wastewater must be maintained in an acidic atmosphere of about pH 2, and the treated wastewater must be neutralized and discharged.

질산성 질소는 수용액에서 상당히 안정하게 존재하기 때문에 제거하는 데에 있어 상당한 기술이 요구된다. 또한 저 농도의 질산성 질소는 쉽게 제거되는 반면 고농도 질산성 질소는 제거하기가 힘들다. 따라서 본 연구에서는 직경 3mm 정도의 아연 ball을 이용하여 고농도의 질산성 질소를 기체 질소의 형태로 제거하는 것을 목적으로 하였고, 다양한 반응조건에서 질산성 질소의 제거 특성을 실험하였다. 본 연구의 결과로 아연 ball을 사용하여 연속식 처리를 통한 질산성 질소의 처리효율은 약 80%정도 되었다. 하지만 폐수를 수소이온농도 2 정도의 산성 분위기로 유지시켜야하고 처리된 폐수를 중화 처리하여 방류시켜야하는 등의 문제점은 상존하고 있다.

Keywords

References

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