Nitrogen Removal from Landfill Leachate by Chemical and Biological Treatment: Process Comparison
نویسندگان
چکیده
منابع مشابه
Nitrogen Removal from Landfill Leachate by Microalgae
Landfill leachates result from the degradation of solid residues in sanitary landfills, thus presenting a high variability in terms of composition. Normally, these effluents are characterized by high ammoniacal-nitrogen (N-NH₄⁺) concentrations, high chemical oxygen demands and low phosphorus concentrations. The development of effective treatment strategies becomes difficult, posing a serious pr...
متن کاملClonic Closing the Nitrogen Cycle from Urban Landfill Leachate by Biological Nitrogen Removal over Nitrite and Thermal Treatment
* CESPA G.R, Technical Department, Av. Catedral 6-8, 08002 Barcelona, Spain. E-mail:{teresa.vives, e.gonzalez, e.jimenez, m.elorduy}@cespa.es **LEQUIA-UdG, Institute of Environment, University of Girona, Campus Montilivi s/n, 17071-Girona, Catalonia, Spain. E-mail: {J.Colprim, helio, ramon, mael, marilos}@lequia.udg.cat *** Laboratory of Molecular Microbial Ecology, Institute of Aquatic Ecology...
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Chemical precipitation is a useful technology to remove ammonium (NH(4)(+)) from landfill leachate. In this paper, the removal of ammonium from landfill leachate was studied. The objective of this study was to investigate optimum pH, optimum molar ratio, and different kinds of chemicals combinations for magnesium ammonium phosphate (MAP) precipitation. Furthermore, the kinetics of MAP formation...
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Background: Mature landfill leachate is a complicated mixture which is resistant to biological treatment processes. The treatment of mature landfill leachate by struvite precipitation and Fenton oxidation was the main objective of the current research. Methods: Struvite with the phosphate/ammonia/magnesium molar ratio of 1/1/1.05 was considered during all experiments. Five initial pHs of 3, 4,...
متن کاملNitrogen Removal from Landfill Leachate via the Nitrite Route
The feasibility of removing nitrogen from mature landfill leachate using the nitrite route was investigated in a two-stage SBR system – (1 first stage, short-cut nitrification; second stage, denitrification via nitrite. With a volumetric exchange rate (n) of 0.3 d and an oxygen concentration of between 1.2 and 1.3 mg/L, the nitrite accumulation ratio – (NO2-N)×100/(NOx-N)% – was between 32% and...
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ژورنال
عنوان ژورنال: Linnaeus Eco-Tech
سال: 2017
ISSN: 2002-8008
DOI: 10.15626/eco-tech.2010.070