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Biogranulation and Physical Properties of Aerobic Granules in Reactors at Low Organic Loading Rate and with Powdered Ceramsite Added

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
In wastewater treatment, aerobic granular sludge (AGS) technology is a relatively new alternative to the activated sludge method. The biogranulation of biomass ensues when appropriate environmental conditions in a reactor are ensured, and one of the factors determining this is the organic loading rate (OLR). As a literature review suggests, the optimal values of OLR for AGS technology are in the range of 2.50–7.50 g COD/(dm3∙d), the aim of the work detailed here was to evaluate the impact of powdered ceramsite on biogranulation in two Granular Sequencing Batch Reactors (GSBRs) in which OLR was equal to just 2.10 g COD/(dm3∙d) (R1) and 1.0 g COD/(dm3∙d) (R2). The research was carried out in laboratory scale with using synthetic wastewater containing different concentration of organic compounds. In the course of the research, a more intensive process of biogranulation was noted in reactor R1, and mean diameters of granules on the last day of experimentation were 962 and 274 µm for R1 and R2, respectively. While the organic loading rate equal to 2.10 g COD/(dm3∙d) could allow granule formation, the results also pointed that lower food-to-microorganism (F/M) ratios favour biogranulation. This parameter was indirectly affected by the application of powdered ceramsite, because the powdered material improved the sludge sedimentation properties (average values of SVI30 being 30.1±12.8 and 36.9±10.9 cm3/g). The result of this was more-limited leaching of biomass from reactors (with average values for MLVSS at 4.37±1.23 and 3.03±0.67 g/dm3).
Rocznik
Strony
202--210
Opis fizyczny
Bibliogr. 22 poz., rys., tab.
Twórcy
  • Department of Environmental Engineering and Chemistry, Rzeszow University of Technology, Powstańców Warszawy 6, 35-959 Rzeszów, Poland
  • Department of Environmental Engineering and Chemistry, Rzeszow University of Technology, Powstańców Warszawy 6, 35-959 Rzeszów, Poland
Bibliografia
  • 1. APHA, 2005. Standard Methods for the Examination of Water and Wastewater, 21st ed. American Public Health Association, Washington DC, USA.
  • 2. Arrojo B. 2007. Advanced systems for biological treatment of high nitrogen – loaded wastewater. Pd.D. Thesis, Uniwersytet Santiago de Compostela.
  • 3. Beun J.J., van Loosdrecht M.C.M., Heijnen J.J. 2002. Aerobic granulation in a sequencing batch airlift reactor. Water Research, 36, 702–712.
  • 4. Cydzik-Kwiatkowska A., Wojnowska-Baryła I., Szatkowski M., Smoczyński L. 2013. Biochemical conversions and biomass morphology in a longterm operated SBR with aerobic granular sludge. Desalination and Water Treatment, 51, 2261–2268.
  • 5. Czarnota J., Masłoń A., Zdeb M. 2018. Powdered keramsite as unconventional method of AGS technology support in GSBR reactor with minimumoptimum OLR. E3S Web of Conferences 44, 00024, https://doi.org/10.1051/e3sconf/20184400024.
  • 6. Derlon N., Wagner J., da Costa R.H.R., Morgenroth E. 2016. Formation of aerobic granules for the treatment of real and low-strength municipal wastewater using a sequencing batch reactor operated at constant volume. Water Research, 105, 341–350.
  • 7. He Q.L., Zhang S.L., Zou Z.C., Wang H.Y. 2016. Enhanced formation of aerobic granular sludge with yellow earth as nucleating agent in a sequencing batch reactor. IOP Conf. Series: Earth and Environmental Science, 39, 1–10.
  • 8. Kim I.S., Kim S.M., Jang A. 2008. Characterization of aerobic granules by microbial density at different COD loading rates. Bioresource Technology, 99, 18–25.
  • 9. Li A.J., Li X.Y., Yu H.Q. 2011. Granular activated carbon for aerobic sludge granulation in a bioreactor with a low-strength wastewater influent. Separation Purification Technology, 80, 276–283.
  • 10. Long B., Xuan X., Yang Ch., Zhang L., Cheng Y., Wang J. 2019. Stability of aerobic granular sludge in a pilot scale sequencing batch reactor enhanced by granular particle size control. Chemosphere, 225, 460–469.
  • 11. Minh N.D. 2006. Treatment of high-strength organic wastewater using an aerobic granular system with baffled membrane bioreactor. MsC Thesis, Asian Institute of Technology.
  • 12. Nor-Anuar A., Ujang Z., van Loosdrecht M.C.M., de Kreuk M.K., Olsson G. 2012. Strength characteristics of aerobic granular sludge. Water Science and Technology, 65, 309–316.
  • 13. Sarma S.J., Tay J.H., Chu A. 2017. Finding knowledge gaps in aerobic granulation technology. Trends in Biotechnology, 35(1), 66–78.
  • 14. Sguanci S., Lubello C., Caffaz S., Lotti T. 2019. Long-term stability of aerobic granular sludge for the treatment of very low-strength real domestic wastewater. Journal of Cleaner Production, 222, 882–890.
  • 15. Sheng G.P., Li A.J., Li X.Y., Yu H.Q. 2010. Effects of seed sludge properties and selective biomass discharge on aerobic sludge granulation. Chemical Engineering Journal, 160, 108–114.
  • 16. Tao J., Qin L., Liu X., Li B., Chen J., You J., Shen Y., Chen H. 2017. Effect of granular activated carbon on the aerobic granulation of sludge and its mechanism. Bioresource Technology, 236, 60–67.
  • 17. Thanh B.X., Visvanathan Ch., Aim R.B. 2009. Characterization of aerobic granular sludge at various organic loading rates. Process Biochemistry, 44, 242–245.
  • 18. Wei Y., Ji M., Li G., Qin F. 2010. Powdered activated carbon (PAC) addition for enhancement of aerobically grown microbial granules treating landfill leachate. 2nd Conference ESIAT, 805–808.
  • 19. Wei D., Xue X., Chen S., Zhang Y., Yan L., Wei Q., Du B. 2013. Enhanced aerobic granulation and nitrogen removal by the addition of zeolite powder in a sequencing batch reactor. Environmental Biotechnology, 97, 9235–9243.
  • 20. Zhang H., Dong F., Jiang T., Wei Y., Wang T., Yang F. 2011. Aerobic granulation with low strength wastewater at low aeration rate in A/O/A SBR reactor. Enzyme and Microbial Technology, 49 (2), 215–222.
  • 21. Zhou J., Zhao H., Hu M., Yu H., Xu X., Vidonish J. 2015. Granular activated carbon as nucleating agent for aerobic sludge granulation: Effect of GAC size on velocity field differences (GAC versus flocs) and aggregation behavior. Bioresource Technology, 198, 358–363.
  • 22. Zou J., Pan J., Wu S., Qian M., He Z., Wang B., Li J. 2019. Rapid control of activated sludge bulking and simultaneous acceleration of aerobic granulation by adding intact aerobic granular sludge. Science of the Total Environment, 674, 105–113.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-ca118330-2134-47c0-b028-d4eb6f9e510c
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