상하수도학회지 (Journal of Korean Society of Water and Wastewater)

  • 제22권3호
  • /
  • Pages.359-366
  • /
  • 2008
  • /
  • 1225-7672(pISSN)
  • /
  • 2287-822X(eISSN)
대한상하수도학회 (The Korean Society of Water and Wastewater)
권호 표지

DAF 공정을 이용한 축산폐수의 고형물 분리와 부상특성

Solid Separation and Flotation Characteristics of Livestock Wastewater Using DAF Process

  • 강병준 (서남대학교 환경화학공학부) ;
  • 유승준 (서남대학교 환경화학공학부) ;
  • 이세일 (서남대학교 환경화학공학부) ;
  • 곽동희 (서남대학교 환경화학공학부)
  • 투고 : 2008.04.21
  • 심사 : 2008.06.09
  • 발행 : 2008.06.15
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초록

The series of experiments under the various conditions were carried out to evaluate the feasibility of dissolved air flotation (DAF) as an alternative of conventional gravity sedimentation (CGS) and to investigate the decrease of the loadings following to biological wastewater treatment processes in livestock wastewater system. On the basis of the experiment result between CGS and DAF processes, for the other water quality criteria as well as suspended solid the removal efficiency of DAF process was about 20~25 % better than CGS process on average. In addition, the particle removal efficiency of DAF process became higher in proportion as the increase of air to solid (A/S) ratio and the general wastewater treatment efficiency of DAF process was enough to meet the requirement of loading decrease to following biological process even at low A/S ratio range. Though DAF process is widely known as an solid separation unit, there was not the notable relationship between particle separation efficiency and several pollutant removal efficiencies like $COD_{Cr}$ and nutrients (T-N, T-P). Assume that the $COD_{Cr}$ was removed as the fraction of particle separation in this experiment, the removal efficiency of T-N and T-P were sensitive to removal efficiency of $COD_{Cr}$, especially.

키워드

과제정보

연구 과제 주관 기관 : 전북지역환경기술개발센터

참고문헌

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