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Harmful Materials treatment in Shipboard sewage by SBR process with BM

BM 미생물제제를 이용한 선박 오·폐수 내 유해물질처리

  • Kim, In-Soo (Division of Environment Engineering, Korea Maritime and Ocean University) ;
  • Lee, Eon-Sung (Graduate school of Korea Maritime and Ocean University) ;
  • Ha, Shin-Young (Graduate school of Korea Maritime and Ocean University) ;
  • Jeong, Kyoung-Chul (Graduate school of Korea Maritime and Ocean University) ;
  • Koh, Sung-Cheol (Division of Environment Engineering, Korea Maritime and Ocean University)
  • 김인수 (한국해양대학교 토목환경공학부) ;
  • 이언승 (한국해양대학교 토목환경공학과) ;
  • 하신영 (한국해양대학교 토목환경공학과) ;
  • 정경철 (한국해양대학교 토목환경공학과) ;
  • 고성철 (한국해양대학교 토목환경공학부)
  • Received : 2014.09.22
  • Accepted : 2014.12.11
  • Published : 2014.12.31

Abstract

Lab scale experiment study was carried out for biological treatment process development in shipboard. SBR(Sequence Batch Reactor) process with BM(Beneficial Microorganisms) was investigated for practical application on shipboard sewage treatment. From the results it was suggested that SBR process with BM might be a suitable process in terms of harmful materials removal. By adding BM to SBR system, the useful species of microorganisms and EPS(Extracellar Polymetric Substances) in sludge was increased. It was found that the biodegrability and harmful organic compounds like VOCs and harmful inorganic compounds like heavy metals. was reduced over 70%. As far as reclamation water is considered, this process is very advantageous to special environments such as cruise ships, because the method of adding BM makes it unnecessary to add other facilities on the SBR system.

본 연구에서는 선박에서 발생하는 오 폐수의 처리를 위하여 SBR공정에 유효미생물을 주입하는 변법을 이용하여 Lab scale 실험을 수행하였다. 유해물질 유입에 따른 생물학적 처리 장치의 효율 저하 문제를 해결하기 위하여 SBR공정에 유효미생물을 주입하는 변법은 크루즈선이라는 특수 환경과의 접목성과 생물학적 처리 시 야기될 수 있는 문제를 대비하기 위한 대안으로 선박환경에 매우 적합한 공정으로 평가되었다. 슬러지 관찰 결과 기존의 활성슬러지에 유효미생물의 주입함으로써 슬러지의 안정성을 확보할 수 있었으며, 슬러지의 EPS 함량도 40% 이상 높아진 것을 확인할 수 있었다. 또한 슬러지의 미생물 분석 결과 유효미생물 주입으로 인해 수처리에 유리한 미생물종이 다수 출현하여 휘발성 유기화합물과 같은 유기 유해물질이 생분해되어 안전한 물질로 전환되는 것을 확인할 수 있었으며. 중금속과 같은 무기 유해물질도 중금속의 종류와 유입농도에 영향을 받지 않고 70% 이상의 안정적인 처리 효율도 확보할 수 있는 것으로 확인되었다.

Keywords

References

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