Coupling anammox and advanced oxidation-based technologies for mature landfill leachate treatment

A. Anfruns, J. Gabarró, R. Gonzalez-Olmos, S. Puig, M. D. Balaguer, J. Colprim

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Resum

The aim of this study was to evaluate the suitability to couple anammox process with advanced oxidation processes (AOPs) to treat mature landfill leachate with high nitrogen and non-biodegradable organic matter concentrations (2309±96mgN-TNL-1 and 6200±566mgCODL-1). The combination of a partial nitiration-anammox system coupled with two AOP-based technologies (coagulation/flocculation+ozonation and photo-Fenton) was assessed in terms of nitrogen and carbon removal. Total nitrogen removal efficiency within a range of 87-89% was obtained with both configurations without the need of any external carbon source. The COD removal efficiencies attained were 91% with coagulation/flocculation+ozonation and 98% with photo-Fenton. Applying the biological treatment prior to advanced oxidation processes-based technologies reduced the quantity of needed reagents giving attaining higher removal efficiencies. From a basic economical point of view and taking into account the results of this study, the combination of partial nitritation-anammox system with photo-Fenton treatment was more favorable than with coagulation/flocculation+ozonation treatment.

Idioma originalAnglès
Pàgines (de-a)27-34
Nombre de pàgines8
RevistaJournal of Hazardous Materials
Volum258-259
DOIs
Estat de la publicacióPublicada - 15 d’ag. 2013
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