The effect of decreased ambient temperature on the biological nitrification and denitrification of a high ammonia landfill leachate

Water Research
P Ilies, D S Mavinic

Abstract

This research investigated the nitrogen removal capabilities of a pre- and post-denitrification process, when treating sanitary landfill leachate containing an ammonia concentration of over 2200 mg N/L, at operating temperatures down to 10 degrees C. The treatment system employed is generally known as a 4-Stage Bardenpho process. Two parallel systems were operated throughout the study; each system had an aerobic solids retention time of 20 days and an external recycle ratio (return activated sludge) of about 3:1. During the entire experimental period, one system used an internal recycle ratio of about 4:1, while the other system used one of 3:1. Methanol was used as supplementary carbon source for denitrification. When operating temperature was decreased from 20 to 17 degrees C, an approximate 15% decrease in denitrification was immediately experienced within both systems, with no noticeable affect on nitrification. This was an unexpected result. Subsequently, the temperature was further decreased to 14 degrees C, and finally to 10 degrees C. With the temperature at 14 degrees C, aerobic wasting was also stopped and methanol loading was progressively decreased to match actual denitrification requirements. At 10 degrees C, both ...Continue Reading

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Citations

Sep 1, 2006·Bioprocess and Biosystems Engineering·Katarzyna Kaczorek, Stanisław Ledakowicz
Jul 11, 2008·Environmental Technology·O N Agdag, D T Sponza
Oct 4, 2003·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Baris CalliIzzet Ozturk
Feb 15, 2014·Applied Microbiology and Biotechnology·Emilie N P CourtensSiegfried E Vlaeminck
Nov 8, 2012·Bioresource Technology·Marcin ZielińskiMarcin Dębowski
Jan 18, 2011·Journal of Environmental Sciences (China)·Feifei WangLili Ding
Feb 3, 2007·Journal of Bioscience and Bioengineering·Taichi YamamotoKenji Furukawa
Dec 7, 2007·Bioresource Technology·Dorota Kulikowska, Ewa Klimiuk
Apr 14, 2010·Waste Management·Johann Fellner, Paul H Brunner
Nov 9, 2005·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Ewa Klimiuk, Dorota Kulikowska
Nov 6, 2003·Psychological Bulletin·Carl J ThoresenKelly de Chermont
Nov 27, 2019·International Journal of Environmental Research and Public Health·Qian ZhangLijie Zhang
Apr 12, 2013·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Juacyara Carbonelli CamposLuigi Cardillo
Aug 30, 2008·Water Environment Research : a Research Publication of the Water Environment Federation·Jin-Young AnByung-Woo Kim
Aug 25, 2020·Journal of Environmental Management·Ashley Danley-ThomsonKendall Karcher

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