Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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A Study on the Correlation between Odorous Compounds, Actinomycetes and Algae in Drinking Water Source of Nakdong River

낙동강 상수원수 중 이취물질과 방선균 및 조류의 상관관계 연구

  • 김정아 (부산시 상수도 수질연구소) ;
  • 김경아 (부산시 상수도 수질연구소) ;
  • 윤철종 (덕산정수사업소) ;
  • 박홍기 (부산시 상수도 수질연구소) ;
  • 정은영 (부산시 상수도 수질연구소) ;
  • 차동진 (부산시 상수도 수질연구소) ;
  • 최진택 (부산시 상수도 수질연구소) ;
  • 손희종 (부산시 상수도 수질연구소)
  • Received : 2012.06.11
  • Accepted : 2013.03.08
  • Published : 2013.03.30
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Abstract

We have investigated the correlation between odorous compounds and actinomycetes in drinking water source of Nakdong River in 2011. Geosmin was mainly detected in the spring and summer seasons (Mar, Aug, and Sep) and 2-MIB was mainly detected in the winter and spring seasons (Feb, Mar and May). The odorous compounds concentrations were highest on March which also overlapped with the peak of actinomycetes, geosmin and 2-MIB were detected highly in the diluted culture solution of isolated actinomycetes strains from Nakdong River. For these reasons we could confirm that odorous compounds on March and August are closely related with actinomycetes. Meanwhile, geosmin increase on September supposed to relate with Microcystis.

상수원수의 이취발생 원인 및 이취물질과 방선균의 상관관계 규명을 목적으로 물금과 매리 취수원수를 대상으로 이취물질은 2010년과 2011년 2월부터 11월까지, 방선균수 및 조류농도를 2011년 2월부터 11월까지 조사하였다. 이취물질(geosmin $||$ 2-MIB)은 3월에 가장 높게 검출되었으며(물금: 12.5 $||$ 19.9 ng/L, 매리: 10.8 $||$ 17.0 ng/L), geosmin은 봄과 여름철(3, 8, 9월)에, 2-MIB는 겨울과 봄철(2, 3, 5월)에 주로 검출되었다. 방선균은 물금과 매리 취수원수에서 0~330 CFU/500 mL의 비교적 적은 수로 연중 분포하였으며 3월에 가장 높은 집락수를 나타내었다. 방선균이 높은 집락수를 나타낸 3월과 8월에는 이취물질 또한 증가하였으며, 3월 분리한 방선균의 배양액에서 geosmin과 2-MIB가 검출되었다. 방선균은 3월과 8월 이취발생 원인으로 확인되었으며, 이취물질과의 상관관계가 높은 것으로 나타났다. 9월 geosmin 농도 증가는 남조류인 Microcystis 발생과 관계가 높은 것으로 판단되었다.

Keywords

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