Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Mixing effect on organic removal efficiency in treating low-strength wastewater using a modified anaerobic filter reactor

변형 혐기성 여상 반응조에서 교반강도가 유기물 제거효율에 미치는 영향

  • 정병곤 (군산대학교 해양환경학과) ;
  • 이헌모 (군산대학교 해양환경학과, 동의공업전문대학 환경공업과, 신성전문대학 환경공업과, 부경대학교 환경공학과)
  • Published : 1996.08.01
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Abstract

Laboratory investigation was conducted to evaluat the mixing effects on organic removal efficiency to treat low-strength synthetic wastewater using modified anaerobic - filter reactor combining anaerobic filter and upflow anaerobic sludge blanket. Using the modified process the low-strength wastewater like municipal sewage could be treated with 85% T-COD removal efficiency at hydraulic retention time of 6 hours. At the constant organic loading of 0.5 kg COD/m 3-day, the organic removal efficiency and effluent COD concentration are increased as influent COD concentration increased from 125 mg/l to 500 mg/l. Mixing effects on organic removal efficiency are evident and optimum mixing speed is found as 50RPM. Placing the granular sludge and media on which slime layer was pre-formed into the reactor seemed to be very effective In achieving short start-up period. Therefore, the steady state was achived after 4 weeks and 1 week based on T-COD and S-COD, respectively.

Keywords

References

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