UIJRT » United International Journal for Research & Technology

Study of Pollutant Removal in Activated Sludge Process Using Lab Scale Plant by Intermittent Aeration

Bijay Thapa, Nawa Raj Khatiwada, Anish Ghimire and Bikash Adhikari
Keywords: Activated Sludge Process, Intermittent aeration, Carboneous pollutant removal, Biological Nutrient Removal, Laboratory Scale Plant.

Cite ➜

Thapa, B., Khatiwada, N.R., Ghimire, A. and Adhikari, B., 2019. Study of Pollutant Removal in Activated Sludge Process Using Lab Scale Plant by Intermittent Aeration. United International Journal for Research & Technology (UIJRT), 1(2), pp.01-07.


The present study was aimed at studying the removal of carboneous and nutrient pollutant from wastewater by intermittently aerating the lab scale activated sludge process. The process was conducted for varying cycle time and aeration fraction with same HRT, SRT and MLSS. The study found that the removal of COD, TKN and TP increases with increasing cycle time. COD and TKN removal decreasing with increasing non-aeration time whereas, TP removal increased with increasing non aeration time. However filamentous growth was observed with increasing non-aeration time. It can be concluded that intermittent aeration can be a good alternative for nutrient removal. By intermittently aerating the system, energy cost for aeration can also be cut-off.


  1. APHA (2005) Standard methods for the examination of water and wastewater. 21st Edition. Washington DC: American Public Health Association (APHA).
  2. Aziz, A., Basheer, F., Sengar, A., Irfanullah, Khan, S. U., & Farooqi, I. H. (2019). Biological wastewater treatment (anaerobic-aerobic) technologies for safe discharge of treated slaughterhouse and meat processing wastewater. Science of the Total Environment, 686, 681–708. https://doi.org/10.1016/j.scitotenv.2019.05.295
  3. Camargo, J. A., & Alonso, Á. (2006). Ecological and toxicological effects of inorganic nitrogen pollution in aquatic ecosystems : A global assessment, 32, 831–849. https://doi.org/10.1016/j.envint.2006.05.002
  4. Chen, S. (2017). Comparision of Batch versus Continuous Process in the Pharmaceutical Industry based on safety consideration. Texas A&M University. Retrieved from https://oaktrust.library.tamu.edu/bitstream/handle/1969.1/161373/CHEN-THESIS-2017.pdf?sequence=1&isAllowed=y
  5. Crittenden, J. C., Trussell, R. R., Hand, D. W., Howe, K. J., & Tchobanoglous, G. (2012). MWH Water Treatment: Principles and Design (3rd Editio). New Jersey: John Wiley & Sons, Inc.
  6. Ekama, G. A. (2015). Recent developments in biological nutrient removal. Water SA, 41(4), 515–524.
  7. Henze, M., Loosdrecht, M. Van, Ekama, G., & Brdjanovic, D. (2008). Biological Wastewater Treatment (I). London: IWA publishing. Retrieved from https://books.google.com.np/books?hl=en&lr=&id=41JButufnm8C&oi=fnd&pg=PA1&dq=why+study+kinetics+of+wastewater+treatment+plant%3F&ots=nSF1m1wI4g&sig=JsiAsh6AfkFKQ-7os3Pnpm_MNp0&redir_esc=y#v=onepage&q=why study kinetics of wastewater treatment
  8. Hessel, V., Vural Gürsel, I., Wang, Q., Noël, T., & Lang, J. (2012). Potential Analysis of Smart Flow Processing and Micro Process Technology for Fastening Process Development: Use of Chemistry and Process Design as Intensification Fields. Chemical Engineering and Technology, 35(7), 1184–1204. https://doi.org/10.1002/ceat.201200038
  9. Irvine, R. L., Miller, G., & Bhamrah, A. S. (1979). Sequencing batch treatment of wastewaters in rural areas. Journal of theWater Pollution Control Federation, 51(2), 244–254.
  10. Jolliffe, H. G., & Gerogiorgis, D. I. (2016). Plantwide design and economic evaluation of two Continuous Pharmaceutical Manufacturing (CPM) cases: Ibuprofen and artemisinin. Computers and Chemical Engineering, 91, 269–288. https://doi.org/10.1016/j.compchemeng.2016.04.005
  11. Karimi, I. A., & Hasebe, S. (1995). Chapter 8 Chemical batch process scheduling. In J. H. Kalivas (Ed.), Adaption of Simulated Annealing to Chemical Optimization Problems. Amsterdam: Elsevier B.V. https://doi.org/10.1016/S0922-3487(06)80009-2
  12. Krishna, R. H. (2013). Review of Research on Bio Reactors used in wastewater treatment for production of Bio-Hydrogen: Future Fuel. International Journal of Science Inventions Today, 2(4), 302–310.
  13. Levenspiel, O. (1999). Chemical Reaction Engineering (3rd Editio). New York: John Wiley and Sons. https://doi.org/10.1021/ie990488g
  14. Loosdrecht, M. C. M. van, Nielsen, P. H., Lopez-Vazquez, C. M., & Brdjanovic, D. (2016). Experimental Methods in Wastewater Treatment. IWA Publishing. https://doi.org/10.1017/CBO9781107415324.004
  15. Low, E. W., & Chase, H. A. (1999). Reducing production of excess biomass during wastewater treatment. Water Research, 33(5), 1119–1132.
  16. Mahendraker, V., Mavinic, D. S., Rabinowitz, B., & Hall, K. J. (2005). The impact of influent nutrient ratios and biochemical reactions on oxygen transfer in an EBPR process—A theoretical explanation. Biotechnology and Bioengineering, 91(1), 22–42. https://doi.org/10.1002/bit.20471
  17. Metcalf, & Eddy. (2003a). Wastewater engineering: treatment and reuse (Fifth). New Delhi: Tata McGraw-Hill Publishing Company Limited. https://doi.org/10.1016/0309-1708(80)90067-6
  18. Metcalf, & Eddy. (2003b). Wastewater Engineering: Treatment and Reuse (Fourth Edi). New Delhi: Tata McGraw Hill Publishing Co. Ltd.
  19. Peng, Z., Peng, Y., Gui, L., & Liu, X. (2010). Competition for Single Carbon Source Between Denitrification and Phosphorus Release in Sludge under Anoxic Condition. Chinese Journal of Chemical Engineering, 18(3), 472–477. https://doi.org/10.1016/S1004-9541(10)60245-5
  20. Sawyer, C., McCarty, P., & Parkin, G. (2003). Chemistry for Environmental Engineering and Science (Fifth Edit). McGraw Hill Companies Inc.
  21. Schaber, S. D., Gerogiorgis, D. I., Ramachandran, R., Evans, J. M. B., Barton, P. I., & Trout, B. L. (2016). Economic analysis of integrated continuous and batch pharmaceutical manufacturing: a case. Industrial and Engineering Chemistry Research, 50, 10083–10092.
  22. Stricker, A., & Béland, M. (2006). Sequencing batch reactor versus continuous flow process for pilot plant research on activated sludge. Water Environment Foundation, 7046–7056.
  23. Suman, A., Ahmad, T., & Ahmad, K. (2017). Dairy wastewater treatment using water treatment sludge as coagulant: a novel treatment approach. Environment, Development and Sustainability, 20(4), 1615–1625. https://doi.org/10.1007/s10668-017-9956-2
  24. Vigneswaran, S., Sundaravadivel, M., & Chaudhary, D. S. (2007). Sequencing Batch Reactors: Principles, Design, Operation and Case Studies. In Water and Wastewater Treatment Technologies. Encyclopedia of Life Support Systems (EOLSS). Retrieved from http://www.eolss.net/sample-chapters/c07/e6-144-11.pdf
  25. Wei, Y., Houten, R. T. Van, Borger, A. R., Eikelboom, D. H., & Fan, Y. (2003). Minimization of excess sludge production for biological wastewater treatment. Water Research, 37, 4453–4467. https://doi.org/10.1016/S0043-1354(03)00441-X.
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