SANTOS, T. G.; SANTOS, Thiago Guimarães.
Résumé:
Industrial effluent treatment systems, in general, receive wastewater with
potentially toxic compounds, with variable nature and characteristics. The presence
of such compounds can cause problems in treatment plants, leading to a reduction of
the treatment efficiency. Therefore there is a necessity to know the minimum
concentration of toxic material that can cause undesirable effects of the treatment. It
is also necessary to know which is the main removal mechanism of the pollutants.
Faced with these necessities, in this work a method was developed for evaluation of
acute toxicity of specific compounds that may be present in petrochemical industrials
effluent. Respirometry was used for aerobic bacteria and the specific methanogenic
activity for anaerobic sludge as evaluation of the metabolic capacity of each sludge.
With the aid of chromatographic tests it also was possible to make an evaluation of
the predominant removal mechanism of compounds studied in this work.
