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활성탄과 생물여과 공정에서의 유기질소계 염소 소독부산물 제거 특성
Removal Characteristics of Nitrogenous Organic Chlorination Disinfection By-Products by Activated Carbons and Biofiltration

서인숙   (경기도 보건환경연구원CC0138257  ); 손희종   (부산광역시 상수도사업본부 수질연구소CC0187773  ); 최영익   (신라대학교 환경공학과UU0000867  ); 안욱성   (요업기술원CC0136137  ); 박청길   (부경대학교 환경공학과UU0000598  );
  • 초록

    활성탄 공정에서 chloropicrin, DCAN, DBAN 및 TCAN과 같은 질소계 염소 소독부산물의 제거기작은 운전초기에는 흡착이 높은 비중을 차지하나 부착미생물의 활성이 중진되면서 부착미생물에 의한 생분해와 흡착에 의해 제거되었으며, 이들 물질들은 생분해능이 큰 물질들로 조사되었다. 입상활성탄 재질별 chloropicrin, DCAN, TCAN 및 DBAN의 제거 특성은 석탄계와 야자계 재질의 활성탄에서 제거율이 높았고, 목탄계는 상대적으로 낮은 제거능을 보였으며, 안트라사이트 biofilter에서 가장 낮은 제거능을 보였다. 활성탄 재질별 부착 미생물의 생체량과 활성도는 석탄계가 가장 높았고, 야자계, 목탄계, 안트라사이트 순으로 나타났으며, 수온 변화에 따른 chloropicrin, DCAN, TCAN 및 DBAN의 제거 특성은 수온이 $10^{\circ}C$ 이하로 저하될 경우 부착 bacteria의 생체량과 활성도 감소로 제거율이 감소하였다. 안트라사이트를 이용한 생물여과 공정은 수온의 변화에 아주 민감하게 변하는 양상을 나타내었으며, 이는 부착 bacteria에 의한 직접적인 생물분해가 주 제거 메카니즘이기 때문인 것으로 나타났다. Chloropicrin, DCAN, TCAN 및 UBAN과 같은 질소계 염소소독부산물들의 유입농도가 높은 경우 이들의 제거시에는 수온의 영향이 매우 중요하며, 흡착능이 소진된 활성탄이나 흡착능이 없는 여재를 사용한 생물여과 공정에서는 수온이 낮은 동절기에는 이들의 유출 가능성이 있었다.


    Coal-, coconut- and wood-based activated carbons and anthracite were tested for an adsorption and biodegradation performances of nitrogenous chlorinated by-products such as chloropicrin, DCAN, DBAN and TCAN. In early stage of operations, an adsorption performance was a main mechanism for removal of nitrogenous chlorinated by-products, however as increasing populations of attached bacteria, the bacteria played a major role in removing nitrogenous chlorinated by-products in the activated carbon and anthracite biofilter. It was also investigated that the compounds were readily subjected to biodegrade. Whilst the coal- and coconut-based activated carbons were found most effective in adsorption of the compounds, the anthracite was worst in adsorption of the compounds. Highest populations and activity of attached bacteria were shown in the coal-based activated carbon. The populations and activity of attached bacteria decreased in the order: coconut-based activated carbon > wood-based activated carbon > anthracite. The attached bacteria were inhibited for removal of the compounds at temperatures below $10^{\circ}C$ . The attached bacteria were more active at higher water temperatures $(20^{\circ}C\; but less active at love. water temperature $(10^{\circ}C\;>)$ . The removal efficiencies of the compounds obtained using coal-, coconut- and wood-based activated carbons and anthracite were directly related to the water temperatures. In particular, water temperature was the most important factor for removal of the compounds in the anthracite biofilter because the removal of the compounds depended mainly on biodegradation. Therefore, the main removal mechanism of the compounds the main mechanism on the removal of the compounds using activated carbon was both adsorption and biodegradation by the attached bacteria. The observation suggests that using coal-based activated carbon is the best for removal of nitrogenous chlorinated by-products in the water treatment.


  • 주제어

    클로로피크린 .   할로아세토니트릴 .   활성탄 .   흡착 .   생물분해 .   생물여과.  

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  • 이 논문을 인용한 문헌 (4)

    1. Bae, Sang-Dae ; Son, Hee-Jong ; Jung, Chul-Woo 2008. "Removal Characteristics of Chloral Hydrate by Activated Carbons and Biofiltration" 대한환경공학회지 = Journal of Korean Society of Environmental Engineers, 30(2): 218~224     
    2. Ko, Jae-Hyun ; Son, Hee-Jong ; Kim, Young-Jin ; Bae, Seog-Moon ; Yoo, Pyung-Jong ; Lee, Tae-Ho 2009. "Biodegradation Characteristics of Aldehydes using Biological Activated Carbon Process" 대한환경공학회지 = Journal of Korean Society of Environmental Engineers, 31(11): 989~996     
    3. Kim, Sang-Goo ; Park, Hong-Gi ; Son, Hee-Jong ; Yoom, Hoon-Sik ; Ryu, Dong-Choon 2015. "Evaluation of Influence Factors for Determination of Proper Backwashing Time of Biological Activated Carbon (BAC) Process in Drinking Water Treatment Process" Journal of environmental science international = 한국환경과학회지, 24(12): 1551~1558     
    4. Son, Hee-Jong ; Kang, So-Won ; Yoom, Hoon-Sik ; Ryu, Dong-Choon ; Cho, Man-Gi 2015. "Evaluation of Biodegradation Kinetic in Biological Activated Carbon (BAC) Process for Drinking Waste Treatment : Effects of EBCT and Water Temperature" 대한환경공학회지 = Journal of Korean Society of Environmental Engineers, 37(7): 404~411     

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