title: Dairy farm wastewater treatment using horizontal subsurface flow wetlands with Typha domingensis and different substrates.
abstract: The aim of this work was to evaluate the influence of different substrates in the performance of a horizontal flow constructed wetland employed in dairy farm wastewater treatment. Typha domingensis was chosen for this study due to its high productivity and efficiency in nutrient removal. Fifteen microcosm-scale reactors simulating horizontal flow constructed wetlands were disposed in a greenhouse in triplicate. Five substrates (river gravel, gravel, LECA, river gravel + zeolite and gravel + zeolite) were evaluated. Real effluent with previous treatment was used. Dairy farm effluents favoured T. domingensis growth, probably due to their high nutrient concentrations. The treatments with the different substrates studied were efficient in the treatment of the dairy farm effluent obtaining ammonium ([Formula: see text]) and total phosphorus (TP) removals between 88-99% and 86-99%, respectively. Removal efficiencies were significantly higher in treatments using LECA and combined substrate (gravel + zeolite). After treatment, the quality of the final effluent was significantly improved. Outlet effluent complied with regulations and could be discharged into the environment.
authors.affiliation: a Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) , Buenos Aires , Argentina.|b GEM (Grupo de Estudios de Medio Ambiente), Universidad Tecnológica Nacional Facultad Regional Rafaela , Rafaela , Argentina.
authors.forename: María Celeste
authors.initials: MC
authors.lastname: Schierano
authors.affiliation: a Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) , Buenos Aires , Argentina.|c Facultad de Ingeniería Química , Universidad Nacional del Litoral , Santa Fe , Argentina.
authors.forename: María Alejandra
authors.initials: MA
authors.lastname: Maine
authors.affiliation: b GEM (Grupo de Estudios de Medio Ambiente), Universidad Tecnológica Nacional Facultad Regional Rafaela , Rafaela , Argentina.
authors.forename: María Cecilia
authors.initials: MC
authors.lastname: Panigatti
mesh_terms: D064751:Ammonium Compounds / Q000032:analysis; D057919:Biological Oxygen Demand Analysis; D003612:Dairying; D009566:Nitrates / Q000032:analysis; D009584:Nitrogen / Q000032:analysis; D010758:Phosphorus / Q000032:analysis; D032401:Typhaceae; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis; D053833:Wetlands; D017641:Zeolites
chemical_list: D064751:Ammonium Compounds; D009566:Nitrates; D009584:Nitrogen; D010758:Phosphorus; D062065:Wastewater; D014874:Water Pollutants, Chemical; D017641:Zeolites
keywords: Dairy farm wastewater; pollutants; removal; substrates; wetland