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Reduction of sludge production and recycled nutrients loading by high-rate aerobic digestion(CaviTec II) with inorganic sludge separation and sludge solubilization

무기슬러지 분리와 슬러지 가용화를 적용한 고효율 호기성 소화기술(CaviTec II)에 의한 슬러지 감량 및 반수류 부하 저감

  • 이동우 ((주)이피에스솔루션 환경기술연구소) ;
  • 배강형 (뉴엔텍(주) 환경기술연구소) ;
  • 조건상 (뉴엔텍(주) 환경기술연구소) ;
  • 김성홍 (조선대학교 토목공학과)
  • Received : 2013.11.22
  • Accepted : 2014.08.07
  • Published : 2014.08.15

Abstract

The performance of the new aerobic digestion system combined with inorganic sludge separation unit and sludge solubilization unit, CaviTec II, is evaluated. Anaerobic digester effluent sludge is used for feed sludge of CaviTec II system. By addition of CaviTec II, the amount of cake generated is reduced by 27%, and the soluble nitrogen is reduced by 92%.

Keywords

References

  1. Chang T.C., You S.J., Damoda R.A., and Chen Y.Y. (2011) Ultrasound pre-treatment step for performance enhancement in an aerobic sludge digestion process, Journal of taiwan Institute of Chemical Engineers, 42, pp.801-808. https://doi.org/10.1016/j.jtice.2011.01.003
  2. Gogate P.R. and Pandit A.B. (2005) A review and assessment of hydrodynamic cavitation as a technology for the future, Ultrasonics Sonochemistry, 12(1-2), pp.21-27. https://doi.org/10.1016/j.ultsonch.2004.03.007
  3. Hao O.J. and Kim M.H., (1990) Continuous preanoxic and aerobic digestion of waste activated sludge, ASCE, Env. Eng. Div., 116(5), pp.863-879. https://doi.org/10.1061/(ASCE)0733-9372(1990)116:5(863)
  4. Kelly H.G., Melcer H. and Mavinic D.S. (1993) Autothermal thermophilic aerobic digestion of municipal sludges: A one-year, full-scale demonstration project, Wat. Env. Res., 65(7), pp.849-861. https://doi.org/10.2175/WER.65.7.7
  5. Kim S.H. and Chung T.H. (1998) Transformation of Solids in the Intermittent Aerobic Sludae Diaestion, Journal of Korean Society of Water Quality, 14(3), pp.271-280(1998).
  6. Lee C.Y. and Park S.Y. (2008) Improvement of solubilization and anaerobic biodegradability for sewage sludge using ultrasonic Pre-treatment. Journal of Korea Organic Resource Recycling Association, 16, pp.83-90.
  7. Maeng J.W. and Bae J.H. (2009) Comparisons of Sludge Pre-Treatment Systems : Hydrodynamic vs Ultrasonic Cavitation, Journal of Korean Society of Environmental Engineers. Res, 31(2), pp.90-95.
  8. Maeng, J.W. and Bae, J.H. (2010) Pre-Treatment of Sewage Sludge by Hydrodynamic Cavitation-II : Enhancement of Digestion Efficiency, Journal of Korean Society of Environmental Engineers. Res, 32(3), pp.264-270.
  9. Mavinic D.S. and Koers D.A. (1982) Fate of nitrogen in aerobic sludge digestion, J. WPCF., 54(4), pp.352-360.
  10. Neis U., Tiehm A. and Nickel K. (2000) Enhancement of anaerobic sludge digestion by ultrasonic disintegration, Water Sci. Technol., 42, pp.73-80.
  11. Nguyen D.X. (2007) Development of the venturi cavitation system for sludge solubilization to improve anaerobic digestibility. Master's Thesis, INHA University.
  12. Show K.Y., Mao T. and Lee D.J. (2007) Optimisation of sludge disruption by sonication, Water Res., 41, pp.4741-4747. https://doi.org/10.1016/j.watres.2007.07.017
  13. Wareham D.G., Hall K.J. and Mavinic D.S. (1993) Real-time control of aerobic - anoxic sludge digestion using ORP, ASCE, Env. Eng. Div., 119(1), pp.120-136. https://doi.org/10.1061/(ASCE)0733-9372(1993)119:1(120)