Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Inactivation of various bacteriophages in wastewater by chlorination; Development of more reliable bacteriophage indicator systems for water reuse

하수 처리 과정의 염소 소독에 대한 여러 박테리오파지들의 저항성 평가; 물 재이용 과정의 안전성 관리를 위한 바이러스 지표미생물의 개발

  • Bae, Kyung-Seon (Department of Environmental Engineering, School of Engineering, Ajou University) ;
  • Shin, Gwy-Am (Department of Environmental Engineering, School of Engineering, Ajou University)
  • 배경선 (아주대학교 환경공학과) ;
  • 신귀암 (아주대학교 환경공학과)
  • Received : 2016.03.29
  • Accepted : 2016.05.30
  • Published : 2016.06.01
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Abstract

There has been an accelerating increase in water reuse due to growing world population, rapid urbanization, and increasing scarcity of water resources. However, it is well recognized that water reuse practice is associated with many human health and ecological risks due to numerous chemicals and pathogenic microorganisms. Especially, the potential transmission of infectious disease by hundreds of pathogenic viruses in wastewater is one of the most serious human health risks associated with water reuse. In this study, we determined the response of different bacteriophages representing various bacteriophage groups to chlorination in real wastewater in order to identify a more reliable bacteriophage indicator system for chlorination in wastewater. Different bacteriophages were spiked into secondary effluents from wastewater plants from three different geographic areas, and then subjected to various doses of free chlorine and contact time at $5^{\circ}C$ in a bench-scale batch disinfection system. The inactivation of ${\phi}X174$ was relatively rapid and reached ~4 log10 with a CT value of 5 mg/L*min. On the other hand, the inactivation of bacteriophage PRD1 and MS2 were much slower than the one for ${\phi}X174$ and only ~1 log10 inactivation was achieved by a CT value of 10 mg/L*min. Overall, the results of this study suggest that bacteriophage both MS2 and PRD1 could be a reliable indicator for human pathogenic viruses for chlorination in wastewater treatment processes and water reuse practice.

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