Resumen de Microbiological and biochemical effects of activated sludge diffusion for sulphide biooxidation in wastewater treatment plants
Raffaele Palumbo, Elvira Giorgio, Massimo Blonda, Alfieri Pollice, Giuseppe Laera
Sulphide was selected as a model odorous compound and its removal efficiencies were experimentally evaluated along with its effects on the biomass and the biological processes in an AS diffusion test. Two bench scale sequencing batch reactors (SBRs) were fed in parallel on real primary sewage and monitored after adding increasing concentrations of sulphide to one of them. In this reactor, an average sulphide removal of 94% was measured. Microbial composition did not show relevant variations after the addition of sulphide, and the good features of activated sludge flocs were maintained also in terms of sludge settleability.
