Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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The Influence of Various Factors upon the Membrane Filter Technique on Raw Water of the Nak-Dong River

낙동강 원수에 대한 대장균군 막여과시험법에 있어서 여러 인자가 결과에 미치는 영향

  • Hyun, Jae-Yeoul (Water Quality Research Institute, Waterworks Headquarters, Daegu Metropolitan City) ;
  • Yoon, Jong-Ho (Water Quality Research Institute, Waterworks Headquarters, Daegu Metropolitan City) ;
  • Shin, Sang-Hee (Water Quality Research Institute, Waterworks Headquarters, Daegu Metropolitan City) ;
  • Kim, Jong-Woo (Water Quality Research Institute, Waterworks Headquarters, Daegu Metropolitan City)
  • 현재열 (대구광역시 상수도사업본부 수질연구소) ;
  • 윤종호 (대구광역시 상수도사업본부 수질연구소) ;
  • 신상희 (대구광역시 상수도사업본부 수질연구소) ;
  • 김종우 (대구광역시 상수도사업본부 수질연구소)
  • Received : 2008.09.02
  • Accepted : 2009.01.23
  • Published : 2009.03.30
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Abstract

In this study, the membrane filter method was compared to the MPN method for the analysis of total coliforms from raw water using raw test waters and controls including 6 standard strains of coliforms, and the various factors were analyzed on the detection of general and fecal origin coliforms. The range of error rate for the detection of 5 standard strains using the membrane filter and the MPN methods was 0 to 6% and 45 to 133%, respectively. The error rate of the membrane filter method was lower than that of the MPN method. The membrane filter method (m-Endo) showed 10% (11 out of 111) of difference for the detection sensitivity of coliforms isolated from raw water compared to the MPN method (BGLB). The membrane filter method was less affected by the factors including temperature, turbidity, charcoals of powder form, contamination, and reverse pressure. In conclusion, the membrane filter method is a better method for the analysis of total coliforms from raw water than the MPN method, considering the accuracy of detection and the tolerance to various experimental factors.

Keywords

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