Environmental Engineering Research

  • 제21권3호
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  • Pages.284-290
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  • 2016
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  • 1226-1025(pISSN)
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  • 2005-968X(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
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Evaluation of monthly environmental loads from municipal wastewater treatment plants operation using life cycle assessment

  • Piao, Wenhua (Department of Civil and Environmental Eng., Pusan National University) ;
  • Kim, Ye-jin (Department of Environmental Eng., Catholic University of Pusan)
  • 투고 : 2015.11.02
  • 심사 : 2016.04.27
  • 발행 : 2016.09.30
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초록

Life cycle assessment (LCA) methodology can be used to assess impacts on the environment that might be generated during treatment of wastewater and sludge treatment. In this work, LCA methodology was suggested to evaluate monthly environmental impact of wastewater treatment plants (WWTPs). Two field scale WWTPs, A2/O process and conventional activated sludge process (CAS), were selected as target plants and the operational data were collected from those plants. As the function units, the unit volume of treated wastewater of $1m^3$ and 1 kg T-N eq. removed were selected. The environmental effect of target WWTPs operation were assessed as impact categories such as global warming potential, eutrophication potential, and so on. From monthly profiles of each index, it was shown that the environmental impact of WWTPs has seasonal patterns influenced by the influent flow rate variation causing higher impacts in winter than summer. This is due to the fact that there were no significant increase in the electricity consumption and chemical usage during the summer while the treated volume of wastewater was increased.

키워드

참고문헌

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피인용 문헌

  1. Analysis of environmental impact of activated carbon production from wood waste vol.24, pp.1, 2018, https://doi.org/10.4491/eer.2018.104
  2. Assessing environmental impacts of large centralized wastewater treatment plants with combined or separate sewer systems in dry/wet seasons by using LCA vol.27, pp.13, 2016, https://doi.org/10.1007/s11356-020-08038-2