title: UASB-polishing ponds design parameters: contributions from a pilot scale study in southeast Brazil.
abstract: This paper presents the results of five years monitoring of an experimental wastewater treatment plant in southeast Brazil, comprised of a UASB reactor followed by a submerged aerated biofilter (BF) (field scale) and shallow polishing ponds (pilot scale). Three ponds in series achieved high quality effluent standards in terms of ammonia and E.coli, but a fourth pond did not result in further efficiency. Well established models to predict ammonia and E.coli removal in facultative and/or maturation ponds were, in a way, validated for polishing ponds too. The paper also includes results of input design parameters, such as pH and E.coli die-off rate constants, and their variation along the pond series.
authors: Universidade Federal de Viçosa, Departamento de Engenharia Civil. 36570-000, Viçosa-MG, Brasil. rkxb@ufv.br
authors: R K X
authors: RK
authors: Bastos
authors: E N
authors: EN
authors: Rios
authors: P D
authors: PD
authors: Bevilacqua
authors: R C
authors: RC
authors: Andrade
mesh_terms: D001673:Biodegradation, Environmental; D006863:Hydrogen-Ion Concentration; D009584:Nitrogen; D010100:Oxygen; D010865:Pilot Projects; D013696:Temperature; D013997:Time Factors; D014865:Waste Disposal, Fluid / Q000379:methods*; D014867:Water / Q000737:chemistry; D018508:Water Purification
chemical_list: D014867:Water; D009584:Nitrogen; D010100:Oxygen