Uso de traçadores na modelagem de unidades de aeração e decantação em estação de tratamento de esgotos

Abstract

Analysis of properties and characteristics of real systems have been performed using the stimulus response technique. A Dirac's Delta stimulus was introduced at the inlet of two aeration tanks and a secondary sedimentation basin of a conventional activated sludge sewage treatment plant. Amidorhodamine G Extra and Bromine-82 were used as fluorescent and radioactive tracers. The hydrodynamic behaviour of both units were analysed through the comparison of experimental response curves with well known models. A procedure to determine the influence of suspended solids on fluorescence of the Amidorhodamine G Extra tracer is presented.