Journal of the Korea Organic Resources Recycling Association (유기물자원화)

Korea Organic Resources Recycling Association (유기성자원학회)
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Solid-liquid Separation Characteristics of Membrane Filter Press according to Coagulant Properties of Anaerobic Digestion Waste Water

혐기소화폐액의 응집제 특성에 따른 멤브레인 필터프레스의 고액분리 특성

  • Han, Seong Kuk (Clean Energy Team, Institute for Advanced Engineering) ;
  • Jung, Hee Suk (Clean Energy Team, Institute for Advanced Engineering) ;
  • Song, Hyoung Woon (Clean Energy Team, Institute for Advanced Engineering) ;
  • Kim, Ho (Clean Energy Team, Institute for Advanced Engineering) ;
  • Ahn, Dae Hyun (Daejeon Metropolitan Council Legislation and Policy Department)
  • 한성국 (고등기술연구원 청정에너지팀) ;
  • 정희숙 (고등기술연구원 청정에너지팀) ;
  • 송형운 (고등기술연구원 청정에너지팀) ;
  • 김호 (고등기술연구원 청정에너지팀) ;
  • 안대현 (대전광역시의회 입법정책실)
  • Received : 2014.09.01
  • Accepted : 2014.09.24
  • Published : 2014.09.30
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Abstract

Recently, it is increase in the processing of organic waste using anaerobic digestion. Therefore, the studies on the processing method for increasing the anaerobic digestion waste water. But it is very difficult to solid-liquid separation, because the characteristics of anaerobic digestion waste water. So this study evaluate solid-liquid separation efficiency of anaerobic digestion sludge using CST(Capillary Suction Time), TTF(Time to Filter). To address this problem, a membrane filter press of the lab scale was produced and the anaerobic digestion wastewater was applied to it. Polymer coagulants were found to be most suitable 7192PLUS and 1T60, It is necessary to minimum injection concentration is 7192PLUS (200 mg/L), 1T60 (100 mg/L). To evaluate dehydration efficiency, it was measured the moisture content of the dehydrated cake and suspended solids of decanted water. As a result, showed that a high removal efficiency of 97.4% when the solid-liquid separation using the membrane filter press. And the moisture content of the dehydrated cake was less than 65%.

최근 들어 유기성폐기물의 혐기소화를 이용한 처리(에너지화)가 증가하고 있다. 이에 따라서 혐기소화 후 발생하는 혐기소화폐액의 처리방안에 대한 연구도 증가하고 있다. 그러나, 혐기소화폐액의 특성상 문제로 고액분리에 매우 어려움이 있다.이에 본 연구에서는 CST와 TTF를 이용하여 혐기소화폐액에 대한 응집에 따른 고액분리 특성을 파악하였다. 또한 이러한 문제를 해결하기 위하여 실험실수준의 멤브레인 필터프레스를 제작하고, 혐기소화폐액에 적용하였다. 고분자 응집제는 7192PLUS와 1T60가 가장 적합한 것으로 확인되었으며, 최소 7192PLUS (200 mg/L), 1T60 (100 mg/L)이상의 투입이 필요하였다. 탈수효율을 평가하기 위하여 탈수케이크의 함수율과 탈리여액의 입자성 고형물을 이용하였다. 결과적으로, 멤브레인 필터프스를 이용하여 고액분리 시 입자성 고형물의 제거효율은 97.4%로 높게 나타났으며, 탈수케이크의 함수율은 65%이하로 나타났다.

Keywords

References

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