Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Application of Sewage Treatment Processes to a System Design for Water Resource Production 1. Analysis and Assessment of Sewage Treatment Process Efficiency

하수처리공정의 물 자원 생산 시스템 설계에 대한 적용 1. 하수처리공정의 처리효율 분석 및 평가

  • Shin, Choon Hwan (Department of Energy & Environmental Engineering, Dongseo University)
  • 신춘환 (동서대학교 에너지환경공학과)
  • Received : 2016.06.15
  • Accepted : 2016.07.18
  • Published : 2016.08.31
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Abstract

The treatment efficiencies of domestic sewage treatment processes were analysed and assessed to suggest and design a suitable technology for coal seam gas (CSG) water treatment. Two sewage treatment plants (S and G in Busan) were selected. The former operates with standard activated sludge and modified Ludzak Ettinger processes while the later uses the combination of $A_2/O$ and gravity fiber filtration. For both plants, the concentrations of BOD, $COD_{Mn}$, T-N and T-P were about 5.0, 19.0, 5.0, 11.0 and 1.0 ppm, respectively, which satisfy the discharge standards. Therefore, although sewage treatment processes seems to be applicable for CSG water treatment, additional processes to remove total dissolved solids and ionic compounds (i.e. bicarbonate) need to be introduced to produce fit-for-purpose water resources for beneficial use (in accordance with Water ACT 2013). This, for the CSG treatment process design, it is necessary to align the operating conditions with merging methods of combinable unit technology obtained from sewage treatment processes.

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