Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
권호 표지

Determination of operating factor and characteristics of membrane fouling on hybrid coagulation pretreatment-UF system in drinking water treatment

정수처리 응집·한외여과 시스템의 연속운전을 통한 운전조건 결정 및 막오염 특성에 관한 연구

  • 문성용 (엔바로테크(주) 나노응용연구소) ;
  • 윤종섭 (경남대학교 토목공학과) ;
  • 김승현 (경남대학교 토목공학과)
  • Received : 2008.02.11
  • Accepted : 2008.04.11
  • Published : 2008.04.15
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Abstract

This study is about efficiency of pretreatment process and operating factor to membrane process at continuous coagulation/ultrafiltration process in water treatment. The capacity of pilot plant was $0.06{\beta}(C)/d$. The raw water used was from Nakdong stream which was characteristized by high organic matter and high turbidity. The result of the test was that coagulation is good process as to high removal rate to organic matter and turbidity but It caused problem to membrane pore blocking. This paper is to determine the membrane fouling potential under different membrane flux, backwash pressure and linear velocity. Backwash pressure and flux is important parameter on operation of membrane system. Those are directly affected on membrane system. When backwash pressure increased from 150 kPa to 200 kPa, the result showed that fouling (pressure increase rate) changed from 3.69 kPa/h to 0.93 kPa/h and the recovery rate changed from 90.7 % to 82.0 %. Linear velocity had slightly effect on fouling. Linear velocity increased from 0.2 m/s to 0.5 m/s, the corresponding pressure rate changed from 0.93 kPa/d to 0.77 kPa/d.

Keywords

References

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