Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
권호 표지
DOI QR코드

DOI QR Code

Characterization of Organic Matters Removed by Biological Activated Carbon

생물활성탄처리에서 제거된 유기물 특성

  • Kim, Woo-Hang (Faculty of Ocean System Engineering, Mokpo National Maritime University) ;
  • Mitsumasa, Okada (Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University)
  • Published : 2007.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

The objective of this study was to clarify the characteristics of the removed micropollutant since the breakthrough of adsorption ability was occurred in biological activated carbon(BAC) process. The removal efficiency of DOC (Dissolved Organic Carbon) was 36 % in the breakthrough of BAC occurred by NOM (Natural Organic Matter). The most of removal DOC was found out the adsorbable and biodegradable DOC (A&BDOC). But it was not clear to remove by any mechanism because A&BDOC have simultaneously the adsorption of activated carbon and biodegradation by microorganism in BAC. The removal of bromophenol was examined with BAC and rapid sand filter, for investigation of DOC removal mechanism in the breakthrough of BAC. In this experiment, BAC filter has been operated for 20 months for the treatment of reservoir water. The BAC filter was already exhausted by NOM. Bromophenol, adsorbable and refractory matter, was completely removed by BAC filter. Therefore, it might be removed by the adsorption in BAC. Adsorption isotherms of bromophenol were compared to two BACs which was preloaded with 500 daltons and 3,000 daltons of NOM. BAC preloaded with 3,000 daltons of NOM was not decreased to the adsorbability of bromophenol but BAC preloaded with 500 daltons of NOM was greatly decreased to it. These result indicated that NOM of low molecular weight can be removed by adsorption after a long period of operation and the breakthrough by NOM in BAC. Therefore, micropollutants might be removed through adsorption by saturated BAC.

Keywords

References

  1. Malley J. P. T., Eighmy T., Collins M. R., Royce J. A., Morgan D. F., 1993, The Performance and Microbiology of Ozone-Enhanced Biological Filtration, J. AWWA, 85(12), 47-57
  2. Kim W. -H., Wataru Nishijima, Eiji Shoto, Mitsumasa Okada, 1997, Pilot plant study on ozonation and biological activated carbon process for drinking water treatment, Water Science and Technology, 35(8), 21-28
  3. Kim W. -R., Wataru Nishijima.. Mitsumasa Okada, 1997, Competitive removal of DOC by adsorption and biodegradation on biological activated carbon, Water Science and Technology, 35(7), 147-153
  4. Nishijima W., Fahrni, Mukaidani T., Okada M., 2003, DOC removal by multi-stage ozonation-biological treatment, Water Research, 37, 150-154 https://doi.org/10.1016/S0043-1354(02)00257-9
  5. Andrea R.H. P., Derek E. L., Gerald E. S. Jr., 2005, Removal of nonbiodegradable chemicals from mixtures during granular activated carbon bioregeneration, J. Environmental Engineering ASCE, 131 (2), 196-205 https://doi.org/10.1061/(ASCE)0733-9372(2005)131:2(196)
  6. Scott Summers R., Brigitte Haist, Johannes Koehler, Jurgen Ritz, Gerhard Zimmer, Heinrich Sontheimer, 1989, The influence of background organic matter on GAC adsorption, J. AWWA, 81(5), 66-74