Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Activated sludge diffusion for odour removal - Effects of H2S on the biomass |
| Abstract | The removal of odours from wastewater treatment plants through diffusion of odour-containing air volumes into the aerated basins was investigated in a bench scale experimental campaign which lasted more than 200 days. Hydrogen sulphide was selected as a model odorous compound and its removal efficiencies were experimentally evaluated along with its effects on the biomass and on the main biochemical processes. Two bench scale sequencing batch reactors were fed in parallel on real primary sewage and monitored for chemical oxygen demand removal, nitrification and denitrification. The balance of H2S was also monitored after adding to one of them a Na2S liquid solution of 17 mgS l(reactor)(-1) d(-1), corresponding to a gas-phase concentration of 240 mgS (Nm(3))(-1). Results showed an average sulphide removal of 94% in the reactor supplied with Na2S. Moreover, 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. No relevant effects of sulphicle were detected on carbon and nitrogen metabolism and chemical oxygen demand removal, nitrification and denitrification efficiencies were always above 75% 95%, and 50% respectively, and comparable across the two reactors. |
| Source | Environmental technology 27 (8), pp. 875–883 |
| Keywords | odour removalodorous compoundssulphidewastewater treatment plantsactivated sludge |
| Journal | Environmental technology |
| Editor | Taylor & Francis, Abingdon, Regno Unito |
| Year | 2006 |
| Type | Articolo in rivista |
| DOI | 10.1080/09593332708618697 |
| Authors | Blonda, M.; Di Pinto, A. C.; Laera, G.; Palumbo, R.; Pollice, A. |
| Text | 399737 2006 10.1080/09593332708618697 ISI Web of Science WOS 000240910500006 odour removal odorous compounds sulphide wastewater treatment plants activated sludge Activated sludge diffusion for odour removal Effects of H2S on the biomass Blonda, M.; Di Pinto, A. C.; Laera, G.; Palumbo, R.; Pollice, A. CNR; CNR The removal of odours from wastewater treatment plants through diffusion of odour containing air volumes into the aerated basins was investigated in a bench scale experimental campaign which lasted more than 200 days. Hydrogen sulphide was selected as a model odorous compound and its removal efficiencies were experimentally evaluated along with its effects on the biomass and on the main biochemical processes. Two bench scale sequencing batch reactors were fed in parallel on real primary sewage and monitored for chemical oxygen demand removal, nitrification and denitrification. The balance of H2S was also monitored after adding to one of them a Na2S liquid solution of 17 mgS l reactor 1 d 1 , corresponding to a gas phase concentration of 240 mgS Nm 3 1 . Results showed an average sulphide removal of 94% in the reactor supplied with Na2S. Moreover, 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. No relevant effects of sulphicle were detected on carbon and nitrogen metabolism and chemical oxygen demand removal, nitrification and denitrification efficiencies were always above 75% 95%, and 50% respectively, and comparable across the two reactors. 27 Published version Activated Sludge Diffusion for Odour Removal Effects of H2S on the Biomass A04.pdf Articolo in rivista Taylor Francis 0959 3330 Environmental technology Environmental technology Environ. technol. Environmental technology. appioclaudio.dipinto DI PINTO APPIO CLAUDIO alfieri.pollice POLLICE ALFIERI giuseppe.laera LAERA GIUSEPPE massimo.blonda BLONDA MASSIMO |