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The effect of sanitary landfill leachate aging on the biological treatment and assessment of photoelectrooxidation as a pre-treatment process.
Müller, Gabriel Timm; Giacobbo, Alexandre; dos Santos Chiaramonte, Edson Abel; Rodrigues, Marco Antônio Siqueira; Meneguzzi, Alvaro; Bernardes, Andréa Moura.
Afiliación
  • Müller GT; Universidade Estadual do Rio Grande do Sul (UERGS), R. Gal. João Manoel, 50, CEP 90010-030 Porto Alegre, RS, Brazil.
  • Giacobbo A; Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500, Setor 4, Prédio 74, CEP 91501-970 Porto Alegre, RS, Brazil.
  • dos Santos Chiaramonte EA; Universidade Estadual do Rio Grande do Sul (UERGS), R. Gal. João Manoel, 50, CEP 90010-030 Porto Alegre, RS, Brazil.
  • Rodrigues MA; Universidade FEEVALE, ICET, RS 239, 2755, CEP 93352-000 Novo Hamburgo, RS, Brazil.
  • Meneguzzi A; Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500, Setor 4, Prédio 74, CEP 91501-970 Porto Alegre, RS, Brazil.
  • Bernardes AM; Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500, Setor 4, Prédio 74, CEP 91501-970 Porto Alegre, RS, Brazil. Electronic address: amb@ufrgs.br.
Waste Manag ; 36: 177-83, 2015 Feb.
Article en En | MEDLINE | ID: mdl-25464941
The sanitary landfill leachate is a dark liquid, of highly variable composition, with recalcitrant features that hamper conventional biological treatment. The physical-chemical characteristics of the leachate along the landfill aging, as well as their effects on the efficiency of the conventional treatment, were evaluated at this paper. The feasibility of photoelectrooxidation process as an alternative technique for treatment of landfill leachates was also determined. Photoelectrooxidation experiments were conducted in a bench-scale reactor. Analysis of the raw leachate revealed many critical parameters demonstrating that the recalcitrance of leachate tends to increase with time, directly influencing the decline in efficiency of the conventional treatment currently employed. The effects of current density and lamp power were investigated. Using a 400 W power lamp and a current density of 31.5 mA cm(-)(2), 53% and 61% efficiency for the removal of ammoniacal nitrogen and chemical oxygen demand were respectively achieved by applying photoelectrooxidation process. With the removal of these pollutants, downstream biological treatment should be improved. These results demonstrate that photoelectrooxidation is a feasible technique for the treatment of sanitary landfill leachate, even considering this effluent's high resistance to treatment.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fotólisis / Contaminantes Químicos del Agua / Administración de Residuos Idioma: En Revista: Waste Manag Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2015 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fotólisis / Contaminantes Químicos del Agua / Administración de Residuos Idioma: En Revista: Waste Manag Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2015 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Estados Unidos