Nitrogen removal via nitrite in a sequencing batch reactor treating sanitary landfill leachate

Bioresource Technology
A Spagni, S Marsili-Libelli

Abstract

The present paper reports the results of the application of a control system, based on artificial intelligence concepts, for the automation of a bench-scale SBR treating leachate generated in old landfills. Attention was given to the nitritation and denitritation processes in order to enhance the nitrogen removal efficiency. Nitrification and nitrogen removal were usually higher than 98% and 95%, respectively, whereas COD removal was approximately 20-30% due to the low biodegradability of organic matter in the leachate from old landfills; therefore, external COD was added to accomplish the denitrification process. Adjusting the length of the oxic phase, almost complete inhibition of the nitrite oxidizing organisms was observed. The results confirm the effectiveness of the nitrite route for nitrogen removal optimisation in leachate treatment. A significant saving of approximately 35% in external COD addition was achieved.

References

Feb 24, 2006·Water Research·S Marsili-Libelli
Mar 1, 2008·Water Science and Technology : a Journal of the International Association on Water Pollution Research·S Marsili-LibelliR Susini

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Citations

Feb 27, 2014·Environmental Science and Pollution Research International·S Fudala-KsiazekK Olanczuk-Neyman
Jun 1, 2014·Applied Microbiology and Biotechnology·Muhammad Hassan, Bing Xie
Jan 18, 2011·Journal of Environmental Sciences (China)·Feifei WangLili Ding
Aug 27, 2010·Journal of Environmental Management·Shuokr Qarani AzizMuhammad Umar
Aug 8, 2009·Journal of Hazardous Materials·Huo-Sheng LiJing-da Li
Jun 27, 2014·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Alessandro SpagniAndrea Rizzo
Oct 26, 2016·The Science of the Total Environment·Tânia F C V SilvaVítor J P Vilar
Jul 13, 2017·Environmental Technology·Etesam GanjianAli Shokuhi Rad
Jun 9, 2010·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Alessandro Spagni, Stefano Marsili-Libelli
Sep 11, 2019·Environmental Monitoring and Assessment·Flávia GonçalvesRaquel Souza Teixeira
Sep 27, 2018·Archaea : an International Microbiological Journal·Kai WangDaoji Wu
Jan 10, 2021·Journal of Environmental Management·J Joaquín González-CortésDomingo Cantero
Jan 25, 2021·Journal of Environmental Management·A H JagabaA Noor

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