Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Critical Flux with Respect to Aeration Rate for the Submerged Microfiltration Hollow Fiber Membrane in the Activated Sludge Solution

활성슬러지 수용액 내 침지식 정밀여과용 중공사막의 산기량에 따른 임계 투과유속

  • Jeong, Doin (Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology) ;
  • Chung, Kun Yong (Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology)
  • 정도인 (서울과학기술대학교 화공생명공학과) ;
  • 정건용 (서울과학기술대학교 화공생명공학과)
  • Received : 2016.04.20
  • Accepted : 2016.04.28
  • Published : 2016.04.30
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Abstract

In this study critical permeation flux was measured by the flux-step method with respect to aeration rate. The hollow fiber membrane module which has $85cm^2$ of effective area and $0.4{\mu}m$ nominal pore size was submerged in the activated sludge solution of MLSS 5,000 mg/L. The critical flux for without aeration was measured of $15.2L/m^2{\cdot}h$. However, the critical flux increased from 20.6 to $32.5L/m^2{\cdot}h$ as the aeration rate increased from 100 to 1,000 mL/min.

본 연구에서는 산기량의 변화에 따른 임계 투과유속을 투과유속단법으로 측정하였다. 유효 막 면적이 $85cm^2$이고 공칭 세공크기가 $0.4{\mu}m$인 중공사형 막모듈을 MLSS 5,000 mg/L인 활성슬러지 수용액에 침지시켜 투과 실험하였다. 산기시키지 않을 경우 임계 투과유속은 $15.2L/m^2{\cdot}h$로 측정되었으나 산기량을 100에서 1,000 mL/min까지 증가시키면 임계 투과 유속이 20.6에서 $32.5L/m^2{\cdot}h$까지 크게 상승하였다.

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References

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