Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Application Study of small-scale sewage treatment system with A2/O precess in Mongolia

A2/O 공법을 이용한 소규모 하수처리시스템의 몽골 현지 적용에 관한 연구

  • Yeo, Yeongki (Department of Convergence Technology Graduate School of Venture Hoseo University) ;
  • Kim, Younghee (Department of Convergence Technology Graduate School of Venture Hoseo University)
  • 여영기 (호서대학교 벤쳐대학원 융합공학과) ;
  • 김영희 (호서대학교 벤쳐대학원 융합공학과)
  • Received : 2017.09.11
  • Accepted : 2017.09.28
  • Published : 2017.10.31
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Abstract

The small-scale sewage treatement system with $A^2/O$ process was applied to evaluate applicability for Mongolian sewage, It was designed to have 10 m3/d flowrate and installed in Ulaanbaatar, Mongolia. During over 6month operation BOD, COD, TN, TP removal efficiency were measured and operation condition was optimized. In addition, MLSS concentration its internal circulation rate and DO were adjusted properly. BOD, COD showed average 88 perecent of removal and TN and TP achieved 81 percent and 88 percent removal efficency, respectively. Maxium influent concentration of BOD, COD, TN and TP was 214 mg/L, 300 mg/L, 24.3 mg/L and 5 mg/L respectively, which were decreased to 4.1 mg/L, 5.6 mg/L, 1.3 mg/L and 0.15 mg/L by the test system. This study show possibility tham small-scale sewage treatment system could be a useful system for scattered sewage wastewater treatment.

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