title: Coupling anammox and advanced oxidation-based technologies for mature landfill leachate treatment.
abstract: 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±96 mg N-TN L(-1) and 6200±566 mg COD L(-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.
authors.affiliation: LEQUIA, Institute of the Environment, University of Girona, Campus Montilivi, Girona, Catalonia, Spain. alba@lequia.udg.cat
authors.forename: A
authors.initials: A
authors.lastname: Anfruns
authors.forename: J
authors.initials: J
authors.lastname: Gabarró
authors.forename: R
authors.initials: R
authors.lastname: Gonzalez-Olmos
authors.forename: S
authors.initials: S
authors.lastname: Puig
authors.forename: M D
authors.initials: MD
authors.lastname: Balaguer
authors.forename: J
authors.initials: J
authors.lastname: Colprim
mesh_terms: D002244:Carbon / Q000737:chemistry; D005427:Flocculation; D006861:Hydrogen Peroxide / Q000737:chemistry; D007501:Iron / Q000737:chemistry; D009584:Nitrogen / Q000737:chemistry; D010084:Oxidation-Reduction; D012037:Refuse Disposal; D013696:Temperature; D014865:Waste Disposal, Fluid; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification
chemical_list: C045076:Fenton's reagent; D014874:Water Pollutants, Chemical; D002244:Carbon; D006861:Hydrogen Peroxide; D007501:Iron; D009584:Nitrogen