title: UV disinfection of stabilization pond effluent: a feasible alternative for areas with land restriction.
abstract: The purpose of this research was to determine the feasibility of a UV photoreactor for the disinfection of effluent from a polishing pond following a UASB reactor treating domestic wastewater. For this, a 20 mm diameter photoreactor (20.7 litre volume) equipped with four 30 W submerged low-pressure mercury arc lamps was used. Three tests with contact times and doses ranging from 45 to 90 s and from 16.9 to 31.3 mW s cm(-2) were carried out. Inactivation of total coliforms and Escherichia coli varied from 2.6 to 3.4 log-units, even with the presence of suspended solids in the range of 87 to 102 mg L(-1). These results have shown that UV radiation disinfection of pond effluents can be a feasible alternative in areas with land restriction.
authors.affiliation: Department of Sanitary and Environmental Engineering, Federal University of Minas Gerais, Belo Horizonte, Brazil.
authors.forename: C V P
authors.initials: CV
authors.lastname: Alves
authors.forename: C A L
authors.initials: CA
authors.lastname: Chernicharo
authors.forename: M
authors.initials: M
authors.lastname: von Sperling
mesh_terms: D019149:Bioreactors; D015169:Colony Count, Microbial; D004203:Disinfection / Q000379:methods*; D004755:Enterobacteriaceae / Q000302:isolation & purification / Q000528:radiation effects*; D004926:Escherichia coli / Q000302:isolation & purification / Q000528:radiation effects; D010316:Particle Size; D014466:Ultraviolet Rays; D014865:Waste Disposal, Fluid / Q000379:methods*; D014873:Water Pollutants / Q000302:isolation & purification / Q000528:radiation effects*
chemical_list: D014873:Water Pollutants