title: Pilot aerobic membrane bioreactor and nanofiltration for municipal landfill leachate treatment.
abstract: The purpose of this article is to evaluate the integration of the air stripping, membrane bioreactor (MBR) and nanofiltration (NF) processes for the treatment of landfill leachate (LFL). Pretreatment by air stripping, without adjustment of pH, removed 65% of N-NH3 present in LFL. After pretreatment, the effluent was treated in MBR obtaining 44% of COD removal, and part of the N-NH3 was converted to nitrite and nitrate, which was later removed in the post-treatment. Nanofiltration was shown to be an effective process to improve the removal of organic compounds, the high toxicity present in LFL and nitrite and nitrate generated in the MBR. The system (air stripping + MBR + nanofiltration) obtained great efficiency of removal in most parameters analyzed, with overall removal of COD, ammonia, color and toxicity approximately 88, 95, 100 and 100%, respectively. By this route, treated landfill leachate may be reused at the landfill as water for dust arrestment and also as earth work on construction sites.
authors.affiliation: a Department of Sanitary and Environmental Engineering , Federal University of Minas Gerais , Belo Horizonte , Brazil.
authors.forename: Míriam C S
authors.initials: MC
authors.lastname: Amaral
authors.affiliation: b Departments of Environmental Science and Technology , Federal Center of Technological Education of Minas Gerais , Belo Horizonte , Brazil.
authors.forename: Wagner G
authors.initials: WG
authors.lastname: Moravia
authors.affiliation: a Department of Sanitary and Environmental Engineering , Federal University of Minas Gerais , Belo Horizonte , Brazil.
authors.forename: Liséte C
authors.initials: LC
authors.lastname: Lange
authors.affiliation: a Department of Sanitary and Environmental Engineering , Federal University of Minas Gerais , Belo Horizonte , Brazil.
authors.forename: Mariana R
authors.initials: MR
authors.lastname: Zico
authors.affiliation: a Department of Sanitary and Environmental Engineering , Federal University of Minas Gerais , Belo Horizonte , Brazil.
authors.forename: Natalie C
authors.initials: NC
authors.lastname: Magalhães
authors.affiliation: a Department of Sanitary and Environmental Engineering , Federal University of Minas Gerais , Belo Horizonte , Brazil.
authors.forename: Bárbara C
authors.initials: BC
authors.lastname: Ricci
authors.affiliation: a Department of Sanitary and Environmental Engineering , Federal University of Minas Gerais , Belo Horizonte , Brazil.
authors.forename: Beatriz G
authors.initials: BG
authors.lastname: Reis
mesh_terms: D019149:Bioreactors; D005374:Filtration; D006801:Humans; D053758:Nanoparticles; D012037:Refuse Disposal / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
chemical_list: D014874:Water Pollutants, Chemical
keywords: Air stripping; MBR; landfill leachate; nanofiltration